CN114212744A - 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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- 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 movably arranged on the chassis, a driving part arranged on the chassis and used for driving the counterweight 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 relative to the width direction center of the chassis through a preset formula and controlling the driving state of the driving part on the counterweight according to the target moving distance. The controller is used for adjusting the gravity center position of the chassis, so that the aerial work platform tends to a moment balance state, and the backward tilting stability can be improved on the basis of not reducing the amplitude variation angle of the arm support. The invention also discloses an aerial work 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 a counterweight mechanism with an adjustable chassis. The invention also relates to an aerial work platform.
Background
An Aerial work platform (Aerial work platform) is a product for serving mobile Aerial works such as Aerial work, equipment installation, maintenance and the like in various industries. According to the difference of the structural characteristics, the aerial working platform mainly comprises an arm type aerial working platform, a scissor type aerial working platform, a trailer type aerial working platform, a cross-country aerial working platform, a telescopic cylinder type aerial working platform, a spider type aerial working platform and the like.
Taking an arm type aerial work platform as an example, the aerial work platform mainly comprises three parts, namely a chassis, a rotary table and an arm support. Wherein, the chassis usually cooperates with tire, track etc. to realize the walking function. The turntable is arranged on the chassis and can perform horizontal rotation movement so as to adjust the operation direction. The arm support is arranged on the rotary table and can perform vertical turnover motion and axial telescopic motion 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 workers can conveniently perform high-altitude operation or convey objects to the high altitude.
At present, safety is one of the most considered problems of the aerial work platform, and stability is the direct embodiment of safety performance. For an arm type aerial work platform, the stability of the whole machine is divided into forward tilting stability and backward tilting stability. In the prior art, the forward tilt stability can be improved by shortening the length of the boom, while the backward tilt stability can only be improved by limiting the amplitude angle of the boom. However, if the amplitude angle of the boom is reduced, the backward tilting working height of the complete machine is difficult to meet the design value, and the performance of the complete machine does not reach the standard. Generally, among various performance indexes of the aerial work platform, the reduction of the horizontal extension length of the whole machine can be accepted, however, if the working height of the whole machine is reduced due to the reduction of the amplitude angle of the arm support, the quality of the whole machine is not qualified directly.
Therefore, how to improve the backward tilting stability of the aerial work platform on the basis of avoiding reducing the amplitude angle of the arm support is a technical problem faced by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an adjustable chassis counterweight mechanism which can improve the backward tilting stability of a complete aerial work platform on the basis of avoiding reducing the amplitude variation angle of an arm support. The invention also aims to provide the aerial work platform.
In order to solve the technical problem, 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, 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 component, wherein the controller is used for controlling the counterweight block to move in a reciprocating manner according to a formula: g1L1cosβ+G2L2cosβ+G3(L3+ΔL)cosβ+[G4L4+G4L5(1-sinα)]cosβ＝G5L6(1+ sin β) calculating a target movement distance of the weight block with respect to a widthwise center of the chassis, and controlling a driving state of the weight block by the driving member based thereon;
Wherein alpha is a variable amplitude 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 counterweight, G4 is the weight of the arm support, and G5 is the weight of the counterweight of the turntable;
l1 is the distance between the center of gravity of the chassis and the tilt line of the aerial platform;
l2 is the distance between the center of gravity of the turntable and the tip-over line;
l3 is the distance between the center of gravity of the counterweight centered in the width direction of the chassis and the tipping line;
l4 is the distance between the center of gravity of the boom and the tip-over line when α is 90 °;
l5 is the distance between the center of gravity of the boom when α is 90 ° and the center of gravity of the boom when α is 0 °;
l6 is the distance between the center of gravity of the turntable weight and the tip-over line;
Δ L is a target movement distance of the weight relative to the widthwise center of the chassis.
Preferably, the counterweight block comprises a plurality of subblocks which are distributed in parallel along the length direction of the chassis and keep a synchronous motion state, and each subblock is arranged at two ends of the length direction of the chassis in a dividing manner.
Preferably, the chassis is further provided with a slide rail extending along the width direction of the chassis, and the counterweight block is slidably disposed on the slide rail.
Preferably, the driving part is a driving cylinder, an output end of the driving cylinder is connected with the counterweight block, and a telescopic direction of the output end of the driving cylinder is a width direction of the chassis.
Preferably, the driving cylinders are simultaneously distributed on two sides of the balancing weight, and the output end of each driving cylinder is respectively connected with the side walls of the two sides of the balancing weight.
Preferably, the mobile balancing weight 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 distributed along the width direction of the chassis and facing the counterweight.
Preferably, the turntable further comprises a third angle sensor for detecting a rotation angle of the turntable relative to the chassis, and the third angle sensor is in signal connection with the controller to activate the controller to control the driving part when the turntable is in 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, and the distance sensor is in signal connection with the controller so as to adjust the elongation of the arm support to zero when the rotary table is within a preset angle range.
The invention also provides an aerial work platform which comprises a rotary table, an arm support and an adjustable chassis counterweight mechanism, wherein the adjustable chassis counterweight mechanism is 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 component of the mechanism and is mainly used for mounting the rotary table and other parts. The counterweight is arranged on the chassis and can reciprocate on the chassis along the width direction of the counterweight. 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 move directionally. The first angle sensor is mainly used for detecting the inclination angle of the chassis relative to the ground (i.e., a 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 angle, namely the elevation angle, of the arm support relative to the chassis, and the amplitude angle of the arm support can be changed at any time in the operation process. The controller all keeps signal connection with first angle sensor, second angle sensor, drive unit's control end, mainly used through moment balance formula:
G1L1cosβ+G2L2cosβ+G3(L3+ΔL)cosβ+[G4L4+G4L5(1-sinα)]cosβ＝G5L6(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 rapidly move to the position of the target moving distance. Therefore, when the adjustable chassis counterweight mechanism is in a backward tilting working condition in the working process of the aerial work platform, the controller is used for controlling the driving part, and the position of the counterweight block in the width direction of the chassis is accurately adjusted, so that the gravity center position of the chassis is finely adjusted, the whole aerial work platform tends to a moment balance state, the tilting risk is avoided, and compared with the prior art, the backward tilting stability of the whole aerial work platform can be improved on the basis of not reducing the amplitude variation angle of the arm support.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram 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 view of the aerial work platform in a backward tilting condition.
FIG. 5 is a schematic diagram of the position of the turntable when the aerial work platform is in a backward tilting condition.
Wherein, in fig. 1-5:
a tip-over line-a;
the device comprises a chassis-1, a rotary table-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 slide rail-9, a displacement sensor-10, a third angle sensor-11 and a distance sensor-12;
turntable counterweight-21, proximity switch-101.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 3 and fig. 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 the aerial work platform when the aerial work platform is in a backward tilting condition,
in one embodiment provided by the present invention, the adjustable chassis counterweight mechanism mainly includes a chassis 1, a counterweight 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 component of the mechanism and is mainly used for mounting the turntable 2 and other parts.
The weight 4 is provided on the chassis 1 and can reciprocate on the chassis 1 in the width direction thereof.
The driving part 5 is arranged on the chassis 1, the output end of the driving part is in power connection with the balancing weight 4, and the driving part is mainly used for driving the balancing weight 4 to move directionally.
The first angle sensor 6 is mainly used to detect the inclination angle of the chassis 1 with respect to the ground (i.e., a support surface for supporting the chassis 1), which varies depending on the unevenness of the ground. Generally, when the ground is smooth, the inclination angle is zero, which is equivalent to that the whole aerial work equipment is horizontally placed on the ground.
The second angle sensor 7 is mainly used for detecting the amplitude angle, i.e. the elevation angle, of the arm support 3 relative to the chassis 1, and the amplitude angle of the arm support 3 can be changed at any time in the operation process. Generally, in the initial state, the arm support 3 is kept parallel to the surface of the chassis 1 or the ground, and the amplitude angle is zero.
The controller 8 is in signal connection with the first angle sensor 6, the second angle sensor 7 and the control end of the driving part 5, and is mainly used for controlling the angular displacement of the driving part through a moment balance formula:
G1L1cosβ+G2L2cosβ+G3(L3+ΔL)cosβ+[G4L4+G4L5(1-sinα)]cosβ＝G5L6(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 rapidly move to the position of the target moving distance.
Wherein alpha is a variable amplitude 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 arm support 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 tilt line of the aerial work platform, L2 is the distance between the center of gravity of the turntable 2 and the tilt line, L3 is the distance between the center of gravity of the counterweight 4 centered in the width direction of the chassis 1 and the tilt line, L4 is the distance between the center of gravity of the boom 3 and the tilt line when α is 90 °, L5 is the distance between the center of gravity of the boom 3 and the center of gravity of the boom 3 when α is 90 °, L6 is the distance between the center of gravity of the turntable counterweight 21 and the tilt line, and Δ L 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 during operation, G1、G2、G3、G4、G5Are all constant values, the tipping line is related to the overall structure of the aerial work platform, and L1、L2、L3、L4、L5、L6Is a predetermined value measured in advance and can be introduced into the controller 8 in advance. And according to the relative position relation between the connecting position of the arm support 3 on the chassis 1 and the tipping line, L4There is a difference between positive and negative values.
Similarly, the calculated result Δ L of the controller 8 also has a difference between a positive value and a negative value, specifically, when Δ L is a positive value, the counterweight block 4 needs to move by a distance Δ L along the width direction of the chassis 1 and in a direction away from the turntable counterweight 21; conversely, when Δ L is negative, the weight 4 needs to be moved by a distance Δ L in the width direction of the chassis 1 and in the direction close to the turntable weight 21.
So, the adjustable chassis counter weight mechanism that this embodiment provided, when the operation in-process at aerial working platform is in the hypsokinesis operating mode, utilize controller 8 to the control of driver part 5, the position of accurate adjustment balancing weight 4 on 1 width direction in chassis, thereby the focus position on meticulous regulation chassis 1, and then make aerial working platform complete machine tend to moment balance state, avoid the risk of tumbling, compare in prior art, can be on the basis of the change width angle that need not to reduce cantilever crane 3, improve the hypsokinesis stability of aerial working platform complete machine.
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 meanwhile, the motion states of each sub-block in the width direction of the chassis 1 are kept consistent. Generally, each sub-block can be located at two end regions of the chassis 1 in the length direction. So set up, the total weight of each subblock and the weight of single balancing weight 4 remain unchanged to the moment calculated value in the formula can not be influenced to the distribution form of each subblock, has still balanced the weight distribution of chassis 1 in addition.
In order to ensure that the counterweight 4 can accurately reciprocate along the width direction of the chassis 1 under the driving of the driving part 5, the sliding rail 9 is additionally arranged in the embodiment. Specifically, the slide rail 9 extends along the width direction of the chassis 1, and the counterweight 4 is disposed on the slide rail 9 and forms a sliding fit 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 driver part 5, prevent that the actual movement track of balancing weight 4 from producing the deviation.
Generally, a groove is formed in the surface of the chassis 1 along the length direction, and the counterweight 4, the driving member 5, the slide rail 9 and other components are disposed in the groove. Wherein, in the initial state, the weight 4 is held at the widthwise central position of the groove, i.e., the widthwise central position of the chassis 1. Correspondingly, the two ends of the sliding rail 9 are respectively abutted against the groove walls on the two sides of the groove, and one end of the driving part 5 is connected to the groove wall on one side of the groove. So set up, balancing weight 4 can be along slide rail 9 reciprocating motion in the width direction space in 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, the biggest motion stroke of restriction balancing weight 4.
In an alternative embodiment with respect to the drive member 5, the drive member 5 is embodied as a drive cylinder, such as a cylinder, a pneumatic cylinder or the like. Meanwhile, the output end of the driving cylinder is connected with the balancing weight 4, and the telescopic direction of the output end of the driving cylinder is parallel to the width direction of the chassis 1. Generally, the cylinder body of the driving cylinder may be connected to the wall of the groove and the end of the piston rod of the driving cylinder may be connected to the side wall of the weight 4, or vice versa, the cylinder body of the driving cylinder is connected to the side wall of the weight 4 and the end of the piston rod of the driving cylinder is connected to the wall of the groove.
Of course, the driving member 5 is not limited to the above-described driving cylinder, and other devices 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 part 5 to the counterweight block 4, in this embodiment, the driving cylinders may be simultaneously disposed two, and respectively distributed on two sides of the counterweight block 4, the output ends of the two driving cylinders are respectively connected to the side walls of two sides of the counterweight block 4, and the output state is kept synchronous. Of course, the two driving cylinders may be distributed on both sides of the sub-block. So set up, drive the both sides lateral wall of balancing weight 4 simultaneously through two driver part 5 and move, can guarantee balancing weight 4's motion stability as far as possible, prevent that balancing weight 4 from producing rotation or swing tendency.
In addition, in order to accurately detect the actual moving distance and position of the weight 4, the displacement sensor 10 is added in this embodiment. Specifically, this displacement sensor 10 mainly includes a plurality of proximity switch 101, and each proximity switch 101 all sets up on chassis 1, for example sets up in the recess on chassis 1 surface, and simultaneously, each proximity switch 101 distributes along chassis 1's width direction to all face balancing weight 4, mainly used detects the position change of balancing weight 4, thereby calculates its displacement.
Generally, the proximity switches 101 can be simultaneously set to 3, which are respectively located in the left area, the center area and the right area of the chassis 1 in the width direction, and can cooperatively operate to accurately detect the actual displacement and the position change of the counterweight block 4 on the chassis 1, and send the data to the controller 8 in real time, so that the controller 8 corrects the control instruction according to the feedback data of the displacement sensor 10, and meanwhile, the controller 8 can learn the position of the counterweight block 4 on the chassis 1 in the initial state, so as to determine whether the counterweight block is reset and centered.
As shown in fig. 4 and 5, fig. 5 is a schematic position diagram of the turntable 2 when the aerial work platform is in a backward tilting working condition.
In addition, aerial working platform can have multiple operating modes in the operation process, generally only need when the complete machine is in the hypsokinesis operating mode just need controller 8's intervention control. In order to accurately judge the current working condition of the aerial work platform, a third angle sensor 11 is additionally arranged in the embodiment. Specifically, the third angle sensor 11 is mainly used for detecting a rotation angle (shown as 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, it can be determined that the whole machine is in a backward tilting condition, at this time, the controller 8 is activated, and a control measure for the driving part 5 is started, so as to adjust the center of gravity of the chassis 1. Generally, θ is 45 ° to 75 °, for example, 60 °, and is located entirely on the left or right side of the chassis 1 (with respect to the longitudinal direction of the chassis 1).
Further, considering that the length of the boom 3 also has an influence on the overall working condition, for example, when the boom 3 extends out for a long time, the center of gravity is closer to the top end of the boom 3, and at this time, the forward tilting stability generally needs to be considered, so that in order to improve the accuracy of the judgment result of the overall working condition, the distance sensor 12 is additionally arranged in the embodiment. Specifically, the distance sensor 12 mainly detects the elongation (x shown in the figure) 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 in the above θ range and x is equal to 0, it can be determined that the whole machine is in the backward tilting condition, at this time, the controller 8 is activated, and a control measure for the driving part 5 is started to adjust the gravity center of the chassis 1.
The embodiment also provides an aerial work 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 arm support 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. An adjustable chassis counterweight mechanism comprises a chassis (1), and is characterized by further comprising a counterweight (4) movably arranged on the chassis (1), a driving component (5) arranged on the chassis (1) and used for driving the counterweight (4) to reciprocate along the width direction of the chassis (1), a first angle sensor (6) used for detecting the inclination angle of the chassis (1) relative to the ground, a second angle sensor (7) used for detecting the amplitude angle of an arm support (3) relative to the chassis (1), and a controller (8) in signal connection with control ends of the first angle sensor (6), the second angle sensor (7) and the driving component (5), wherein the controller (8) is used for controlling the counterweight mechanism through a formula:
G1L1cosβ+G2L2cosβ+G3(L3+ΔL)cosβ+[G4L4+G4L5(1-sinα)]cosβ＝G5L6(1+sinβ)
Calculating a target movement 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 balancing weight (4) by the driving part (5) according to the target movement distance;
wherein alpha is a variable amplitude 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 arm support (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 tipping line of the aerial work platform;
l2 is the distance between the center of gravity of the turntable (2) and the tipping line;
l3 is the distance between the center of gravity and the tipping line when the counterweight (4) is centered in the width direction of the chassis (1);
l4 is the distance between the center of gravity of the arm support (3) and the tipping line when alpha is 90 degrees;
l5 is the distance between the center of gravity of the boom (3) when α is 90 ° and the center of gravity of the boom (3) when α is 0 °;
l6 is the distance between the center of gravity of the turntable weight (21) and the tipping line;
delta L is the target moving distance of the balancing weight (4) relative to the width direction center of the chassis (1).
2. The adjustable chassis counterweight mechanism according to claim 1, wherein the counterweight block (4) comprises a plurality of subblocks which are distributed in parallel along the length direction of the chassis (1) and keep a synchronous motion state, and each subblock is divided into two ends of the chassis (1) in the length direction.
3. The adjustable chassis counterweight mechanism according to claim 1, wherein the chassis (1) is further provided with a slide rail (9) extending along the width direction of the chassis, and the counterweight (4) is slidably arranged on the slide rail (9).
4. The adjustable chassis counterweight mechanism according to claim 1, characterized in that the driving component (5) is a driving cylinder, the output end of the driving cylinder is connected with the counterweight (4), and the extension direction of the output end of the driving cylinder is the width direction of the chassis (1).
5. The adjustable chassis counterweight mechanism of claim 4, wherein the driving cylinders are simultaneously distributed on both sides of the counterweight block (4), and the output end of each driving cylinder is respectively connected with the side walls on both sides of the counterweight block (4).
6. The adjustable chassis counterweight mechanism of claim 1, further comprising a displacement sensor (10) arranged on the chassis (1) and used for detecting the actual moving distance of the counterweight block (4), wherein the displacement sensor (10) is in signal connection with the controller (8).
7. The adjustable chassis counterweight mechanism of claim 4, wherein said displacement sensor (10) comprises a plurality of proximity switches (101) distributed along the width of said chassis (1) and directed towards said counterweight (4).
8. Adjustable chassis counterweight mechanism according to claim 1, characterized in that it further comprises a third angle sensor (11) for detecting the angle of rotation of the turntable (2) with respect to the chassis (1), said third angle sensor (11) being in signal connection with said controller (8) to activate the control of said drive member (5) by said controller (8) when the turntable (2) is within a preset angular range.
9. The adjustable chassis counterweight mechanism according to claim 8, characterized by further comprising a distance sensor (12) for detecting the elongation of said boom (3), said distance sensor (12) being in signal connection with said controller (8) to activate the control of said drive member (5) by said controller (8) when said turret (2) is within a preset angular range and the elongation is zero.
10. An aerial work platform comprising a turntable (2), an arm support (3) and an adjustable chassis counterweight mechanism, characterized in that the adjustable chassis counterweight mechanism is specifically the adjustable chassis counterweight mechanism according to any one of claims 1 to 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 |
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| CN114212744B (en) | 2023-12-19 |
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