CN106430020A - Overload protection device and system and aerial work platform - Google Patents
Overload protection device and system and aerial work platform Download PDFInfo
- Publication number
- CN106430020A CN106430020A CN201610824178.7A CN201610824178A CN106430020A CN 106430020 A CN106430020 A CN 106430020A CN 201610824178 A CN201610824178 A CN 201610824178A CN 106430020 A CN106430020 A CN 106430020A
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- China
- Prior art keywords
- overload protection
- transmission component
- limiting
- work platform
- aerial work
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B66F11/046—Working platforms suspended from booms of the telescoping type
-
- 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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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to the field of engineering machines, in particular to an overload protection device and system and an aerial work platform. The overload protection device comprises two limiting frames. Each limiting frame comprises a connecting part and a limiting part formed by bending and extending the connecting part. The limiting parts on the two limiting frames are arranged oppositely, and the connecting parts on the two limiting frames are located at opposite positions. Springs are fixedly arranged between the two oppositely-arranged limiting parts, and a locating bolt used for limiting the telescopic path of the corresponding spring is arranged in each spring in a penetrating manner. A limiting switch is arranged on at least one limiting part, and a contact point of the limiting switch is located between the two limiting parts. Each connecting part is provided with two connecting joints used for being connected with a to-be-connected piece. Thus, according to the overload protection device, the use safety of the aerial work platform can be ensured and improved, the potential safety hazards of the aerial work platform can be reduced, and the overload protection device is simple in structure, low in cost and high in reliability and durability.
Description
【Technical field】
The present invention relates to engineering machinery field, more particularly to a kind of engineering working vehicle, are more particularly to a kind of overload protection
Device, system and aerial work platform.
【Background technology】
Aerial work platform is a kind of advanced aerial operation machine, can greatly improve the work effect of aerial workmen
Rate, safety and comfortableness, and reduce labor intensity, early have been widely used in developed country.The making of China's aerial work platform
With also more and more extensive, such as initial general municipal road lamp maintenance, garden tree pruning etc., and fast with China's economy
Speed development, engineering construction, industrial installation, overhaul of the equipments, Factory Building maintenance, shipbuilding, electric power, municipal administration, airport, communication, gardens, traffic
Deng constantly increasing to the demand of aerial work platform.
The maximum real load of the operating board on aerial work platform all has strict demand, once overload, which is being made
Larger potential safety hazard occurs during industry, such as：Car load topples, associated arm unstability etc., and then causes the person and economically
Heavy losses, therefore, the necessary real load on operating board implements real-time monitoring.
Existing way is：On the base plate of operating board, strain gauge load cell (equivalent to electronic scale or weighbridge) is installed,
Then by the weight information of the strain gauge load cell real-time monitoring is sent to control system, make in order to control system
Going out corresponding instruction or action, and then realizes real-time monitoring being realized to the real load on operating board.Although which can be one
Determine in degree, to realize the monitoring of load on operating board, but its structure is relatively complicated, relatively costly, reliability and ruggedness relatively
Difference.
Therefore, it is necessary to improve to the relevant apparatus for monitoring the load on operating board, and provide a kind of corresponding
Aerial work platform, to overcome the shortcoming of above-mentioned prior art and deficiency.
【Content of the invention】
The purpose of the present invention aims to solve the problem that the problems referred to above, there is provided a kind of overload protection arrangement, system and work high above the ground are put down
Platform, its simple structure, cost are relatively low, reliability and ruggedness are higher, and then ensure that the safety in utilization of aerial work platform.
For realizing the purpose, the invention provides a kind of overload protection arrangement, including two position-limited racks, each is described spacing
Frame all includes a connecting portion and is bent the limiting section for extending, the limiting section phase on two position-limited racks by the connecting portion
To arrange and two position-limited racks on connecting portion be also at relative position, fixed between two for being oppositely arranged limiting section
There is spring, the spring inner is equipped with the bolt for limiting the telescopic spring path；Spacing described at least one
Portion is provided with limit switch and the contact of the limit switch is between two limiting section；All set on each described connecting portion
Have two for the connecting node for treating that fitting is connected.
It is preferred that four connecting nodes on described two position-limited racks constitute parallelogram.
It is preferred that being all provided with limit switch on described two position-limited racks.
It is preferred that the spring be provided with multiple.
Correspondingly, present invention also offers a kind of overload protective device, including the overload described in any of the above-described technical scheme
Limit switch in protection device and the overload protection arrangement be electrically connected with or communication connection controller and with the control
The alarm device that device is electrically connected with.
Further, the alarm device includes signal lighties and/or buzzer.
Correspondingly, present invention also offers a kind of aerial work platform, including car body, is hubbed at stretching on the car body
Transmission component, located at the overload protection system described in the operating board of the flexible transmission component end and any of the above-described technical scheme
System；Overload protection arrangement in the overload protective device is located between the flexible transmission component and operating board.
Further, the operating board is connected with flexible transmission component by expansion joint assembly, the overload protection dress
It is arranged between expansion joint assembly and scaling operation platform.
Further, the one end on the expansion joint assembly away from flexible transmission component is connected with oscillating cylinder；The mistake
Two connecting nodes for carrying protection device side are connected with the oscillating cylinder, two connecting nodes of opposite side and behaviour
Station connects.
Further, the vehicle frame on the car body is provided with turntable, and the flexible transmission component is away from the operating board
One end is flexibly connected with the turntable by support arm；Between the support arm and flexible transmission component and flexible transmission component with
Support member is all provided between expansion joint assembly.
Compared with prior art, the present invention possesses following advantage：
In technical scheme, the overload protection arrangement includes two position-limited racks, and each described position-limited rack is all wrapped
Including a connecting portion and the limiting section for extending being bent by the connecting portion, the limiting section on two position-limited racks is oppositely arranged
And the connecting portion on two position-limited racks is also at relative position, between two for being oppositely arranged limiting section, bullet is installed with
Spring, limiting section described at least one is provided with limit switch and the contact of the limit switch is between two limiting section；
Therefore, when loading on the operating board being connected with the overload protection arrangement, two for being connected with operating board connecting node stress, produce
Raw one with respect to two other connection section being connected with miscellaneous part (flexible transmission component, application coupling assembly or oscillating cylinder)
The torque of point, now in order to reach again the balance of torque, spring can be compressed, to produce a counteracting force, the retroaction
Power can produce a torque with respect to two connecting nodes being connected with the miscellaneous part, and then realize the balance of torque；?
During this, the pressurized meeting of spring causes the distance between two limiting sections to shorten, and (loads i.e. on operating board when being short to a certain degree
To a certain extent), associated components can be pressed onto the contact on limit switch, so by controller triggering corresponding report to the police and/
Or protection operation, for example, when 250Kg is loaded on operating board, aerial work platform switches to the mould for being unable to total travel work
Formula (limits the horizontal stretching distance of operating board), when 350Kg is loaded onto on operating board, sends overload warning signal and makes height
Working platform quits work, and guarantees and improve the safety in utilization of aerial work platform with this, reduces its potential safety hazard, fills
Code insurance barrier user and the personal safety of related personnel.
To sum up, the present invention not only can ensure that and improve the safety in utilization of aerial work platform, reduces its potential safety hazard, fills
Code insurance barrier user and the personal safety of related personnel, and its simple structure, cost be relatively low, reliability and ruggedness are higher.
【Description of the drawings】
Fig. 1 is a kind of structural representation of exemplary embodiments of aerial work platform in the present invention；
Fig. 2 illustrates the decomposition texture schematic diagram of the parts such as operating board in Fig. 1, overload protection arrangement and oscillating cylinder；
Fig. 3 is the assembling structure schematic diagram of the overload protection arrangement shown in Fig. 2；
Fig. 4 is the decomposition texture schematic diagram of the overload protection arrangement shown in Fig. 2；
Fig. 5 is the structural representation of the car body shown in Fig. 1；
Fig. 6 is another status architecture schematic diagram of the car body shown in Fig. 1, which show the structure of the second box house；
Fig. 7 is another status architecture schematic diagram of the car body shown in Fig. 1, which show the structure of the first box house；
Fig. 8 is another status architecture schematic diagram of the car body shown in Fig. 1, which show electromotor and the second box house
Structure；
Fig. 9 is the structural representation of the dynamical system shown in Fig. 1, which show under the cover plate open mode of the first casing
The structure of each associated components；
Figure 10 is the partial enlarged drawing at M position in Fig. 1；
Figure 11 is another status architecture schematic diagram of the front end component of the high-altitude operation vehicle shown in Fig. 1, the front end component
Including expansion joint assembly, operating board and its associated connecting member etc.；
Figure 12 is the structural representation of the flexible transmission component of the aerial work platform shown in Fig. 1；
Figure 13 is the partial enlarged drawing of aminoacyl site in Figure 12；
Figure 14 is the partial enlarged drawing at B position in Figure 12；
Figure 15 stretches out status architecture schematic diagram for the flexible transmission component shown in Figure 12；
Figure 16 is the structural representation of the inside key transmission component of the flexible transmission component shown in Figure 12, wherein, crucial
Transmission component includes the first sprocket wheel, the second sprocket wheel, stretches rope chain bar, returns rope chain bar and telescopic oil cylinder etc.；
Figure 17 is another status architecture schematic diagram of the inside key transmission component of the flexible transmission component shown in Figure 12；
Figure 18 is another status architecture schematic diagram of the inside key transmission component of the flexible transmission component shown in Figure 12；
Figure 19 is the structural representation of the telescopic oil cylinder of the flexible transmission component shown in Figure 12；
Figure 20 is the partial enlarged drawing at C position in Figure 19；
Figure 21 is a kind of structural representation of the front end component of another embodiment of aerial work platform in the present invention.
【Specific embodiment】
With exemplary embodiment, the present invention is further described below in conjunction with the accompanying drawings, identical label wherein in accompanying drawing
All refer to identical part.Additionally, if it is known that the detailed description of technology is for illustrating the invention is characterized in that unnecessary
, then omitted.
A kind of structural representation such as Fig. 1～20 institute of one exemplary embodiments of aerial work platform that the present invention is provided
Show, the aerial work platform includes car body 1, the flexible transmission component 2 being articulated on the car body 1 and by connection group of stretching
The operating board 3 that part 5 is connected with 2 end of flexible transmission component.
It should be noted that the car body 1 includes vehicle frame 102, drive system, fuel tank 121 and hydraulic oil container 122；Institute
Stating drive system includes dynamical system 14, drive mechanism, control system, drive mechanism and wheel set etc.；The dynamical system
14th, fuel tank 121 and hydraulic oil container 122 are all located at the side of 102 length direction of the vehicle frame；On the vehicle frame 102 of the car body 1
End is provided with turntable 101, and the flexible transmission component 2 passes through support arm 4 and the turntable 101 away from one end of the operating board 3
It is flexibly connected；The operating board 3 is connected with flexible transmission component 2 by expansion joint assembly 5；The support arm 4 and flexible biography
Support member (concretely each function type is all provided between dynamic component 2 and between flexible transmission component 2 and expansion joint assembly 5
Oil cylinder).
In addition, accompanying drawing 1～4 is referred to, overload protection arrangement 35 between the operating board 3 and expansion joint assembly 2, is provided with,
The overload protection arrangement 35 includes the position-limited rack 351 of two interactions, and each position-limited rack 351 all includes a connecting portion 353
And the limiting section 352 of one end bending extension by the connecting portion 353, the limiting section 352 on two position-limited racks 351
Be oppositely arranged and two position-limited racks 351 on connecting portion 353 be also at relative position, two for being oppositely arranged limiting section
Multiple springs 357 (spring 357 can also be adjusted to according to the actual requirements) are installed between 353, in each spring 357
Portion is all equipped with stretches the bolt 354 in path for limiting the spring 357, and two limiting sections 352 are in the spring 357
Support under remain parastate；Meanwhile, described two position-limited racks 351 are all provided with control system and are electrically connected with or communicate
The limit switch 355 (also dependent on limit switch 355 is arranged in actual demand wherein a position-limited rack 351) of connection, institute
State limit switch 355 specifically on the limiting section 352 of position-limited rack 351 and limit switch 355 contact in two position-limited racks
Between limiting section 352 on 351.Specifically, on each connecting portion 353, two connecting nodes 356, the i.e. overload protection are all provided with
35 total of four connecting node 356 of device, wherein, on the basis of 3 placing directions of Figure of description, left side position-limited rack 351
The left side connecting node 356 of left side connecting node 356 and right side position-limited rack 351 is all by connecting bracket 34 with oscillating cylinder 33 even
Connect, the right side connecting node 356 of left side position-limited rack 351 and the right side connecting node 356 of right side position-limited rack 351 all with operating board 3
Connection, four connecting nodes 356 constitute a parallelogram.Correspondingly, also it is electrically connected with warning in control system to carry
Showing device, the alarm device includes signal lighties and/or buzzer etc., and wherein, alarm device can be according to different polices
Show that rank sends different cues.
When loading on operating board 3, two connecting nodes 356 for being connected with operating board 3 (i.e. right side limiting frame 351
Right side connecting node 356 and left side limiting frame 351 right side connecting node 356) stress, produce one with respect to oscillating cylinder
Two other connecting node 356 (i.e. the left side connecting node 356 of right side limiting frame 351 and the left side limiting frame 351 of 33 connections
Left side connecting node 356) torque, now in order to reach again equalising torque, spring 357 certainly will be compressed, to produce one
Counteracting force, the counteracting force can produce a torque with respect to two connecting nodes 356 being connected with oscillating cylinder 33, then
Realize the balance of torque；During this, the pressurized meeting of spring 357 causes the distance between two limiting sections 352 to shorten, and works as spring
357 pressurized so that the distance between two limiting sections 352 is short to when to a certain degree (loading to a certain extent on operating board 3), spacing
Associated components in portion 352 can be pressed onto the contact on limit switch 355, and then limit switch 355 sends phase to control system
The signal that answers, reports to the police and/or protection operation by control system triggering is corresponding, when 250Kg is loaded on operating board 3, high
Working platform switches to first class of protection state model, i.e., corresponding signal lighties are bright and limit aerial work platform and be unable to total travel
Work, when continuing to be loaded onto 350Kg, be pressed onto for trigger second class protection state model the contact of limit switch 355 when, control
System control buzzer processed sends overload warning signal and controls aerial work platform to quit work, until alarm release.Therefore,
The aforementioned structure mode and its process can ensure that and improve the safety in utilization of aerial work platform, reduces its potential safety hazard, fills
Code insurance barrier user and the personal safety of related personnel, meanwhile, its structure is relatively low compared with simple, cost, reliability and ruggedness relatively
High.
Accompanying drawing 1 and Fig. 5～9 are referred to, fixation is mounted with the first case to the both lateral sides of 102 length direction of the vehicle frame respectively
Body 11 and the second casing 12, the fuel tank 121 is with hydraulic oil container 122 in the second casing 12.The fuel tank 121, liquid
Force feed case 122 and the second casing 12 adopt be additionally provided with unitary design, and second casing 12 can turn over into rout up
Control chamber 123 in second casing 12, the control chamber 123 is electrically connected with control system；Specifically, second case
The side of body 12 is provided with the upset mouth that is easy to the control chamber 123 to rout up and turns over into second casing 12, the control chamber 123
Upside (on the basis of the placing direction of Fig. 6 in Figure of description) edge with described upset mouth upper edge hinged；As general
The control chamber 123 is routed up after the second casing 12 from the upset mouth, and the control chamber 123 is designed to respect to the height on ground
Ergonomic requirements when meeting on workman's standing ground.In addition, may also set up on the operating board 3 and the control system
The relative control apparatus of electric connection.
Electromotor 112, radiator 143 in the dynamical system 14 and located at the electromotor 112 and radiator 143 it
Between fan component 142 all in the first casing 11；Wherein, first casing 11 is divided into two by the radiator 143
Cabin, i.e. the first cabin 15 and the second cabin 16, the electromotor 112 is with fan component 142 in the first cabin 15, same
When, the electromotor 112 is fixed on the vehicle frame 102 by support 114, the junction of the electromotor 112 and support 114
Damping device (not shown) is provided with, first casing 11 has to be used for for the component in which covering the cover plate of getting up, the lid
Offer on the position relative with second cabin 16 on plate and be easy to (accompanying drawing 9 be referred to, other regard into the air vent 17 that gives vent to anger
Figure is not drawn into), the air inlet of the enterprising trachea of the electromotor 112 is provided with air filter 144, the air filter 144
In second cabin 16.
The fan component 142 include fan blade 152, drive driving means 153 that the fan blade 152 rotates and
For controlling the control valve group 154 of the positive and reverse steering of the driving means 153；Set between the electromotor 112 and radiator 143
The cooling connecting tube having for coolant circulation.Wherein, the driving means 153 adopt hydraulic-driven, the fan component 142
The hydraulic connecting pipe being provided between radiator 143 for hydraulic medium circulation, the hydraulic connecting Gutron control valve excessively
Group 154 is connected with driving means 153；The radiator 143 includes Outboard Sections (the close vehicle frame 102 for coolant radiating
Part) and for hydraulic medium radiating inboard portion；The coolant is mainly used in flowing through electromotor 112 is started with taking away
Heat on machine 112, realizes the thermolysis to electromotor 112；The hydraulic medium is mainly used in and 112 shaft end of electromotor
Oil pump coordinates to rotate driving means 153, and then drives fan blade 152 to rotate.
When 14 normal work of dynamical system (non-blowdown), control valve group 154 controls driving means 153 to drive fan blade
152 rotate forward (predefined) so that outside air is entered in the first casing 11 by the air vent 17 on the first casing 11, and warp
Cross radiator 143 and electromotor 112 is blowed to, realize the purpose of related substanceses radiating in electromotor 112 and radiator 143.Work as blowdown
When, control valve group 154 controls driving means 153 to drive fan blade 152 to invert so that the debris in the first casing 11 are with air
Discharged outside the first casing 11 by air vent 17 in the lump, the process removes debris or ash in dynamical system 14 using automatization
Dirt, cleaning efficiency is higher, labor intensity is less, cleaning more thoroughly, effect preferable.
Further, since by the dynamical system 14, fuel tank 121 and hydraulic oil container 122 all located at described in above-mentioned car body 1
The side of vehicle frame 102, and in those parts and associated components load related substanceses after gross weight up to 1000Kg～1500Kg,
Thus which can make the center of gravity of aerial work platform reduce about 0.4m～0.6m, and then greatly promote the cross-country ability of aerial work platform
Energy and climbing capacity, more adapt to the working environments of various complexity so as to the aerial work platform.Meanwhile, which also has is easy to increase height
The level of working platform is stretched away from the working range of increase aerial work platform.
The expansion joint assembly 5 includes outer arm 51, is slideably positioned in the outer arm 51 and can be from the outer arm 51
The inner arm 52 that stretches out of one end and the forearm telescopic oil cylinder 53 between the outer arm 51 and inner arm 52.
It should be noted that the forearm telescopic oil cylinder 53 includes cylinder body (not shown) and is slideably positioned in the cylinder body
Piston rod (not shown)；Preferably, the cylinder body is fixed on the outer wall of the outer arm 51, and the external part of the piston rod is solid
It is connected on the outer wall of the inner arm 52.
The first leveling cyclinder 55, the flexible connection group is provided between the flexible transmission component 2 and expansion joint assembly 5
The one end being connected with the flexible transmission component 2 on part 5 is hinged with small arm head 54；One end of first leveling cyclinder 55 with stretch
Contracting transmission component 2 is hinged, and the other end is hinged with the small arm head 54；The expansion joint assembly 5 also includes forearm amplitude oil cylinder
57, one end of the forearm amplitude oil cylinder 57 is hinged with the small arm head 54, and the other end is hinged with the outer wall of the outer arm 51, makes
Obtain the small arm head 54, outer arm 51 and forearm amplitude oil cylinder 57 and constitute a triangle jib lubbing mechanism.
It should be noted that small arm head 54, outer arm 51 and flexible transmission component 2 are hinged by same bearing pin 512；Described
First leveling cyclinder 55, small arm head 54, forearm amplitude oil cylinder 57 and outer arm 51 constitute a quadric chain.In addition, first adjusts
Flat oil cylinder 55 can be using electric leveling mode, it would however also be possible to employ hydraulic leveling mode；When using electric leveling mode, the forearm is made
54, outer arm 51 and flexible transmission component 2 are realized hinged bearing pin 512 and are provided with being easy to and 55 phase of the first leveling cyclinder
The angular transducer (not shown) that joins；When using hydraulic leveling mode, the flexible transmission component 2 is provided with and described first
The hydro -leveling device that leveling cyclinder 55 is mutually matched；Preferably, first leveling cyclinder 55 is using electric leveling mode.
Wherein, the first leveling cyclinder 55 can be passed through, and the leveling to small arm head 54 is realized to the push pull maneuver of small arm head 54；Tool
Body, a certain angle preset of small arm head 54 is zero-bit by the angular transducer on small arm head 54, in flexible transmission group
In the amplitude changing process of part 2, small arm head 54 can be accordingly inclined, now angular transducer meeting with the luffing of flexible transmission component 2
The angle signal of small arm head 54 is delivered to corresponding controller, controller can send corresponding control instruction after receiving signal, with
The first leveling cyclinder is controlled to stretch the 55 flexible leveling so as to realize small arm head 54, i.e. control small arm head 54 is in default zero all the time
Position.In addition, can be by the flexible luffing up and down to realize expansion joint assembly 5 of control forearm amplitude oil cylinder 57.
Further, the 3rd leveling cyclinder 58 is provided between the expansion joint assembly 5 and operating board 3, and the described 3rd adjusts
One end of flat oil cylinder 58 is hinged with the inner arm 52, and the other end is hinged with the oscillating cylinder 33 being fixed on the operating board 3.
Preferably, the second leveling cyclinder 56 is additionally provided between the small arm head 54 and expansion joint assembly 5, and described second adjusts
One end of flat oil cylinder 56 is hinged with small arm head 54, and the other end is hinged with the outer wall of the outer arm 51；Second leveling cyclinder 56
Cavity communicated by oil pipe with the cavity of the 3rd leveling cyclinder 58.
It should be noted that second leveling cyclinder 56 can avoid stretching with the setting of the 3rd leveling cyclinder 58 is connected group
3 run-off the straight of operating board in amplitude changing process of part 5, both may insure in the amplitude changing process of expansion joint assembly 5, the operation
Platform 3 remains horizontal attitude, and therefore the second leveling cyclinder 56 and the 3rd leveling cyclinder 58 have two grades of levelling functions (described the
One leveling cyclinder 55 and its relevant apparatus realize one-level leveling).Cavity and the 3rd leveling due to second leveling cyclinder 56
The cavity of oil cylinder 58 is communicated by oil pipe, thus can by the 3rd leveling cyclinder 58 and the second leveling cyclinder 56 flexible mate reach
To the purpose of leveling, its detailed process is：When 5 luffing upwards of expansion joint assembly, the expansion link in forearm amplitude oil cylinder 57
Stretch out, while the expansion link in the second leveling cyclinder 56 also stretches out, now in the second leveling cyclinder 56 rod chamber hydraulic medium
It flow to because of pressure in the rod chamber of the 3rd leveling cyclinder 58, then the expansion link retraction of the 3rd leveling cyclinder 58, the 3rd leveling
Hydraulic medium in the rodless cavity of oil cylinder 58 enters the rodless cavity of the second leveling cyclinder 56 by oil pipe, with by the 3rd leveling oil
Cylinder 58 is to pressure balance in 56 related chamber of the second leveling cyclinder realizing leveling purpose；When the downward luffing of expansion joint assembly 5
When, and the same principle, simply the flow direction of hydraulic medium and the kinestate of associated components are contrary；Wherein, described second adjust
The cylinder barrel sectional area of flat oil cylinder 56 and the 3rd leveling cyclinder 58, the stroke of stretch rod area and expansion link be all default and
Prepare.
Accompanying drawing 1 and 10～20 is referred to, which discloses the flexible transmission component of the aerial work platform of the present invention jointly
One exemplary embodiments.The flexible transmission component 2 includes basic arm 21, two joint arms 22, three joint arms 23, telescopic oil cylinder 24, stretches
Rope chain bar 27 and time rope chain bar 28.
Two joint arm 22 is socketed in the basic arm 21 and can be from the basic arm 21 (upside shown in Figure 15)
Stretch out, the three joint arms 23 are socketed in two joint arm 22 and can be from the external part of two joint arm 22 (shown in Figure 15
Side) stretch out.
The telescopic oil cylinder 24 includes the cylinder barrel 241 being fixed in two joint arm 22 and is socketed in the cylinder barrel 241
Expansion link 242, the expansion link 242 is with hollow structure 247, the hollow structure 247 in the expansion link 242 and cylinder barrel
241 internal cavities are communicated, and are provided with oil guide pipe 245, the expansion link 242 in the hollow structure 247 on the expansion link 242
External part (Figure 17 shown in downside) be fixed on the basic arm 21.Preferably, the external part end face of the expansion link 242 leads to
Cross clamp 8 to be fixed on basic arm 21, be provided with the external part of the expansion link 242 on the cylinder barrel 241 described in being easy to
The connecting portion that cylinder barrel 241 is fixed in two joint arm 22, the connecting portion may include pin shaft hole, i.e., insert bearing pin by bearing pin
Kong Zhong, realizes cylinder barrel 241 is fixed in two joint arms 22 with this；Certainly, the connecting portion on cylinder barrel 241 can also be located at cylinder barrel
241 other positions, such as middle part of cylinder barrel 241 etc..
Additionally, the first sprocket wheel 25 is installed with the telescopic oil cylinder 24, be installed with the second sprocket wheel 26 in two joint arm 22,
Second sprocket wheel 26 is closer to the external part of the cylinder barrel 241 with respect to the first sprocket wheel 25；The one of the stretching chain 27
End is fixed on the basic arm 21, and the other end bypasses first sprocket wheel 25 and is fixed in the three joint arms 23, that is, stretch chain
Downside (by direction that in Figure of description relevant drawings put on the basis of) of the two ends of bar 27 all in the first sprocket wheel 25；Described
The one end for returning rope chain bar 28 is fixed in the three joint arms 23, and the other end bypasses second sprocket wheel 26 and is fixed in the basic arm
On 21, that is, upside of the two ends of rope chain bar 28 all in the second sprocket wheel 26 is gone back to (with the side that relevant drawings in Figure of description are put
To on the basis of).Preferably, first sprocket wheel 25 on the telescopic oil cylinder 24 in external part which described away from
At the oil cylinder head of one end, second sprocket wheel 26 is in two joint arm 22 at the external part of the expansion link 242；Logical
The frame mode is crossed, the first sprocket wheel 25 and the second sprocket wheel 26 can be divided into the upper and lower (with phase in Figure of description of cylinder barrel 241
On the basis of closing the direction put of accompanying drawing) at the position at two ends, it can be ensured that cylinder barrel 241 is relatively smoothly mobile, and then drives dependent part
The steady transmission of part and stretching motion；Certainly, first sprocket wheel 25 and the second sprocket wheel 26 also can arrange other correct positions,
For example the first sprocket wheel 25 is located at the position on cylinder barrel 241 in the middle part of cylinder barrel, or the second sprocket wheel 26 is leaned in two joint arms 22
At the position at 241 middle part of nearly cylinder barrel etc..
Wherein, as shown in Figure 19～20, the inner chamber of the cylinder barrel 241 of the telescopic oil cylinder 24 is divided into by expansion link 242 to be had
Rod cavity 244 and rodless cavity 243, i.e., the cavity formed by the inner chamber of cylinder barrel 241 position Chong Die with expansion link 242 is rod chamber
244, the inner chamber of cylinder barrel 241 is overlap with expansion link 242 and in 242 end upper right side of expansion link (with Figure of description
On the basis of the direction that Figure 20 puts) position be rodless cavity 243；The hollow structure 247 of the expansion link 242 passes through interface channel
246 are connected with rod chamber 244；Oil guide pipe 245 in the hollow structure 247 of the expansion link 242 and the hollow structure 247 all has
External oil pipe is communicated.
Further, described time rope chain bar 28 with stretch the respective termination of rope chain bar 27 by chain connector 29 affixed
In the three joint arms 23, and each termination is respectively and fixedly connected with the both sides of the chain connector 29；By the frame mode,
Have and be easy to rope chain bar 27 is stretched, return and between rope chain bar 28 and three joint arms 23, preferably realize linkage effect.Certainly, stretch rope chain bar 27 with
Returning rope chain bar 28 also being fixedly connected by different connection member realizations and three joint arms 23 respectively.
Further, the rope chain bar 27 of stretching is provided with chain detection apparatus；The chain detection apparatus can real-time detection phase
The state of chain is closed, when related chain occurs fracture or exceeds default loosening value, which can send alarm signal, come really with this
The safety in utilization of the flexible transmission component 2 is protected, and then guarantees the personal safety of operator and other related personnel.Specifically
, chain detection apparatus can be located at and stretch one end that rope chain bar 27 is connected with basic arm 21.
Preferably, the basic arm 21, two joint arms 22 and three joint arms 23 are all preferably hollow structure, certainly, described basic
Arm 21, two joint arms 22 and three joint arms 23 are not limited to internal for hollow structure, and which is alternatively its that can realize meeting aforementioned condition
His structure.
Further, the hollow structure inside of the basic arm 21, two joint arms 22 and three joint arms 23 constitutes telescopic cavity, described
Telescopic oil cylinder 24, the first sprocket wheel 25, the second sprocket wheel 26, stretch rope chain bar 27 and rope chain bar 28 is returned all in the telescopic cavity；Its
Can make the more compact structure of this flexible transmission component 2, and then reduce the abrasion of associated components and slow down which is aging, extend its use
Life-span, and also can reduce maintenance and frequency of maintenance, while maintenance, safeguard more convenient, maintenance and maintenance cost relatively low, separately
Outward, can also reduce to a certain extent because above-mentioned associated components expose outside and make the probability for touching injury by mistake of related personnel.When
So, by telescopic oil cylinder 24, the first sprocket wheel 25, the second sprocket wheel 26, the part such as rope chain bar 27 and time rope chain bar 28 is stretched located at telescopic cavity
It is also outward feasible (i.e. on the outer wall of basic arm 21, two joint arms 22 and three joint arms 23).
To sum up, as expansion link 242 is affixed on basic arm 21, therefore when by appropriate liquid media drive cylinder barrel
When 241, cylinder barrel 241 can drive two joint arms 22 to move (on the basis of the direction that relevant drawings in Figure of description are put) in the lump upwards
Dynamic, so that two joint arms 22 are stretched out from the upper end of basic arm 21, and then by stretching the gearing of rope chain bar 27 and the first sprocket wheel 25
Three joint arms 23 are pulled to stretch out from the upper end of two joint arms 22, with infusion fluid medium is continued in cylinder barrel 241, two joint arms 22 and three are saved
Arm 23 can continue upward end and extend, until it reaches required shift motion or maximum preset stroke；Wherein, in this process,
One sprocket wheel 25 is equivalent to a movable pulley so that three joint arms 23 are equal to 241 shift motion of cylinder barrel with respect to the displacement of basic arm 21
2 times of (i.e. two joint arms 22 are with respect to the displacement of basic arm 21), so have and are easy to a certain degree improving the stroke that stretches.
When 244 oil-feed of rod chamber in cylinder barrel 241 is made by the hollow structure 247 in expansion link 242,241 meeting of cylinder barrel
Two joint arms 22 are driven to move down in the lump, so that two joint arms 22 are retracted from the upper end of basic arm 21, and then by returning rope chain bar 28
And second the gearing of sprocket wheel 26 three joint arms 23 can be pulled to bounce back in two joint arms 22, enter with lasting in expansion link 242
Oil, two joint arms 22 can continue to bounce back to lower end with three joint arms 23, until it reaches required retraction degree or be fully retracted puts in place；Its
In, in this process, the second sprocket wheel 26 is equivalent to a movable pulley so that three joint arms 23 are equal to respect to the displacement of basic arm 21
2 times of 241 shift motion of cylinder barrel (i.e. two joint arms 22 are with respect to the displacement of basic arm 21).
Specifically, comprehensive Fig. 1 and other relevant drawings, the three joint arms 23 are real with operating board 3 by expansion joint assembly 5
Existing hinged, i.e. three joint arms 23 are hinged with outer arm 51 on expansion joint assembly 5, the inner arm 52 on expansion joint assembly 5 with operate
Platform 3 connects, the expansion joint assembly 5 have be easy to operating board 3 realize further in the horizontal direction a certain degree of extension and
Retraction；The basic arm 21 is hinged with car body 1 by support arm 4, i.e. basic arm 21 is hinged with support arm 4, support arm 4 and car body
Associated components on 1 are flexibly connected；In addition, being provided with amplitude oil cylinder 6 between basic arm 21 and support arm 4, which can cause basic arm
21st, support arm 4 and a stable triangular structure also being constituted with its interconnective amplitude oil cylinder 6, and then causes the high-altitude
Job platform has higher stability and safety in operation.
When aerial work platform need to rise arm operation, two joint arms 22 that control is stretched in transmission component 2 are stretched with three joint arms 23
Go out, now, the operating board 3 for being connected with flexible transmission component 2 synchronously can be stretched out under the drive of three joint arms 23, meanwhile, also controlled
The related amplitude oil cylinder 6 of system, support arm 4 and expansion joint assembly 5 adjusting extension angle or the position of associated arm, until operation
Platform 3 is reached presets operating position or maximum extension stroke.
In the same manner, when aerial work platform need to receive arm operation, two joint arms 22 and the three joint arms that stretches in transmission component 2 are controlled
23 retractions, now, the operating board 3 for being connected with flexible transmission component 2 synchronously can be bounced back under the drive of three joint arms 23, meanwhile, also
Controllable related amplitude oil cylinder 6, support arm 4 and expansion joint assembly 5 adjusting angle or the position of associated arm, until operation
Platform 3 bounces back to default operating position or original non-extension state.
Additionally, accompanying drawing 21 is referred to, another embodiment of the aerial work platform of the present invention, the embodiment is there is disclosed
It is with the difference of above-described embodiment：Support member between the flexible transmission component 2 and expansion joint assembly 5 is luffing
Oil cylinder 57, i.e., substitute the one-level leveling associated components in above-described embodiment with the amplitude oil cylinder 57；3rd leveling cyclinder 58
Using electric leveling mode, the oscillating cylinder 33 is provided with the angular transducer 59 for coordinating with the 3rd leveling cyclinder 58, that is, use
The electric leveling mode substitutes the hydraulic leveling mode in above-described embodiment in two grades of leveling.
During work, can be by the flexible come real of the amplitude oil cylinder 57 between flexible transmission component 2 and the expansion joint assembly 5
The luffing up and down of existing expansion joint assembly 5；Can be by the flexible leveling to realize operating board of the 3rd leveling cyclinder 58, it is ensured that behaviour
Station is in horizontality all the time.
Specifically, a certain position of operating board 3 is preset as zero-bit by the angular transducer 59 on oscillating cylinder 33,
In 5 amplitude changing process of expansion joint assembly, the angular transducer 59 can transmit the signal of telecommunication to corresponding controller, and controller receives letter
Corresponding control instruction can be sent after number, to control the 58 flexible leveling so as to realize operating board of the 3rd leveling cyclinder, i.e. control behaviour
Station 3 is in default zero-bit all the time.
Although having been illustrated with some exemplary embodiments of the present invention above, those skilled in the art will manage
Solution, in the case of the principle without departing from the present invention or spirit, can make a change to these exemplary embodiments, the present invention's
Scope is limited by claim and its equivalent.
Claims (10)
1. a kind of overload protection arrangement, it is characterised in that including two position-limited racks, each described position-limited rack all includes a connecting portion
And the limiting section for extending is bent by the connecting portion, the limiting section on two position-limited racks is oppositely arranged and described in two
Connecting portion on position-limited rack is also at relative position, is installed with spring, the spring between two for being oppositely arranged limiting section
Inside is equipped with the bolt for limiting the telescopic spring path；Described at least one, limiting section is provided with limit switch
And the contact of the limit switch is between two limiting section；All be provided with each described connecting portion two for waiting
The connecting node of part connection.
2. overload protection arrangement as claimed in claim 1, it is characterised in that four connecting nodes on described two position-limited racks
Constitute parallelogram.
3. overload protection arrangement as claimed in claim 1, it is characterised in that be all provided with spacing opening on described two position-limited racks
Close.
4. overload protection arrangement as claimed in claim 1, it is characterised in that the spring is provided with multiple.
5. a kind of overload protective device, it is characterised in that include overload protection arrangement as described in any one of Claims 1 to 4,
It is electrically connected with limit switch on the overload protection arrangement or the controller of communication connection and electrically connects with the controller
The alarm device for connecing.
6. overload protective device as claimed in claim 5, it is characterised in that the alarm device include signal lighties and/
Or buzzer.
7. a kind of aerial work platform, it is characterised in that including car body, the flexible transmission component being hubbed on the car body, set
Overload protective device in the operating board of the flexible transmission component end and as described in claim 5 or 6；The overload protection
Overload protection arrangement in system is located between the flexible transmission component and operating board.
8. aerial work platform as claimed in claim 7, it is characterised in that the operating board by expansion joint assembly and is stretched
Contracting transmission component connects, and the overload protection arrangement is located between expansion joint assembly and scaling operation platform.
9. aerial work platform as claimed in claim 8, it is characterised in that away from flexible transmission on the expansion joint assembly
One end of component is connected with oscillating cylinder；Two connecting nodes of the overload protection arrangement side are with the oscillating cylinder even
Connect, two connecting nodes of opposite side are connected with operating board.
10. aerial work platform as claimed in claim 8 or 9, it is characterised in that the vehicle frame on the car body is provided with and turns
Platform, the flexible transmission component is flexibly connected with the turntable by support arm away from one end of the operating board；The support
Support member is all provided between arm and flexible transmission component and between flexible transmission component and expansion joint assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824178.7A CN106430020A (en) | 2016-09-14 | 2016-09-14 | Overload protection device and system and aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824178.7A CN106430020A (en) | 2016-09-14 | 2016-09-14 | Overload protection device and system and aerial work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106430020A true CN106430020A (en) | 2017-02-22 |
Family
ID=58167888
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610824178.7A Pending CN106430020A (en) | 2016-09-14 | 2016-09-14 | Overload protection device and system and aerial work platform |
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| Country | Link |
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| CN (1) | CN106430020A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253188A (en) * | 2018-01-17 | 2018-07-06 | 攀枝花市仁通钒业有限公司 | Batch mixing blender baiting valve overload protective device |
| CN110885046A (en) * | 2019-10-28 | 2020-03-17 | 江苏东迈重工机械有限公司 | Overload-prevention lifting mechanism and control method thereof |
| WO2020084561A1 (en) | 2018-10-26 | 2020-04-30 | Haulotte Group | Weighing system for a working platform of an aerial lift having a mast |
| FR3087761A1 (en) | 2018-10-26 | 2020-05-01 | Haulotte Group | WEIGHING SYSTEM FOR WORK PLATFORM OF A MAT LIFT PLATFORM |
| CN111792591A (en) * | 2020-07-23 | 2020-10-20 | 湖南星邦智能装备股份有限公司 | Connecting mechanism for aerial work platform |
| CN115321438A (en) * | 2022-08-30 | 2022-11-11 | 北谷电子有限公司 | Overload detection method for aerial work platform and aerial work platform |
| CN115321438B (en) * | 2022-08-30 | 2024-06-11 | 北谷电子股份有限公司 | Overload detection method for aerial work platform and aerial work platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258239Y (en) * | 2008-08-11 | 2009-06-17 | 江阴市华澄特种机械工程有限公司 | Aerial working platform operation bucket overload protection device capable of implementing alarm and restraint |
| CN202785546U (en) * | 2012-09-20 | 2013-03-13 | 中联重科股份有限公司 | Weighing device and overhead working truck |
| CN204342377U (en) * | 2014-11-28 | 2015-05-20 | 杭州爱知工程车辆有限公司 | A kind of high-lift operation car hopper weight-limiting device |
| CN204752142U (en) * | 2015-07-24 | 2015-11-11 | 中际联合（北京）科技股份有限公司 | Overload protection device |
| CN205114985U (en) * | 2015-11-23 | 2016-03-30 | 江阴市华澄特种机械工程有限公司 | Aerial working platform's cantilever crane and manned device |
| CN206108840U (en) * | 2016-09-14 | 2017-04-19 | 浙江鼎力机械股份有限公司 | Excess loading protector , system and aerial working platform |
-
2016
- 2016-09-14 CN CN201610824178.7A patent/CN106430020A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258239Y (en) * | 2008-08-11 | 2009-06-17 | 江阴市华澄特种机械工程有限公司 | Aerial working platform operation bucket overload protection device capable of implementing alarm and restraint |
| CN202785546U (en) * | 2012-09-20 | 2013-03-13 | 中联重科股份有限公司 | Weighing device and overhead working truck |
| CN204342377U (en) * | 2014-11-28 | 2015-05-20 | 杭州爱知工程车辆有限公司 | A kind of high-lift operation car hopper weight-limiting device |
| CN204752142U (en) * | 2015-07-24 | 2015-11-11 | 中际联合（北京）科技股份有限公司 | Overload protection device |
| CN205114985U (en) * | 2015-11-23 | 2016-03-30 | 江阴市华澄特种机械工程有限公司 | Aerial working platform's cantilever crane and manned device |
| CN206108840U (en) * | 2016-09-14 | 2017-04-19 | 浙江鼎力机械股份有限公司 | Excess loading protector , system and aerial working platform |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253188A (en) * | 2018-01-17 | 2018-07-06 | 攀枝花市仁通钒业有限公司 | Batch mixing blender baiting valve overload protective device |
| WO2020084561A1 (en) | 2018-10-26 | 2020-04-30 | Haulotte Group | Weighing system for a working platform of an aerial lift having a mast |
| FR3087761A1 (en) | 2018-10-26 | 2020-05-01 | Haulotte Group | WEIGHING SYSTEM FOR WORK PLATFORM OF A MAT LIFT PLATFORM |
| CN110885046A (en) * | 2019-10-28 | 2020-03-17 | 江苏东迈重工机械有限公司 | Overload-prevention lifting mechanism and control method thereof |
| CN111792591A (en) * | 2020-07-23 | 2020-10-20 | 湖南星邦智能装备股份有限公司 | Connecting mechanism for aerial work platform |
| CN111792591B (en) * | 2020-07-23 | 2022-01-18 | 湖南星邦智能装备股份有限公司 | Connecting mechanism for aerial work platform |
| CN115321438A (en) * | 2022-08-30 | 2022-11-11 | 北谷电子有限公司 | Overload detection method for aerial work platform and aerial work platform |
| CN115321438B (en) * | 2022-08-30 | 2024-06-11 | 北谷电子股份有限公司 | Overload detection method for aerial work platform and aerial work platform |
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Application publication date: 20170222 |
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