CN103332617A - Extension and retraction protection device and method for suspension arm barrel of automobile crane and automobile crane - Google Patents
Extension and retraction protection device and method for suspension arm barrel of automobile crane and automobile crane Download PDFInfo
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- CN103332617A CN103332617A CN2013103123460A CN201310312346A CN103332617A CN 103332617 A CN103332617 A CN 103332617A CN 2013103123460 A CN2013103123460 A CN 2013103123460A CN 201310312346 A CN201310312346 A CN 201310312346A CN 103332617 A CN103332617 A CN 103332617A
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Abstract
The invention discloses an extension and retraction protection device and an extension and retraction protection method for a suspension arm barrel of an automobile crane and the automobile crane. A load measuring device and a control device are connected to a CAN (Controller Area Network) bus. The method comprises the following steps that in the extension and retraction process of the suspension arm barrel, the load measuring device acquires the practical load of an oil cylinder for driving the suspension arm barrel to extend and retract, and transmits the practical load to the control device; and when the control device judges that the practical load is larger than a preset on-load extension and retraction load threshold value, the control device controls the automobile crane to stop the extension and retraction operation of the suspension arm barrel. According to the extension and retraction protection device and the extension and retraction protection method for the suspension arm barrel of the automobile crane and the automobile crane disclosed by the invention, the on-load extension and retraction actions can be limited, and a customer is prevented from forcibly performing on-load extension and retraction on a vehicle without an on-load extension and retraction function, so that the extension and retraction oil cylinder and relevant executing elements are protected from being damaged, the service life the vehicle is prolonged, and the operating security of a user is improved.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to a kind of car hosit arm tube flexible fender guard, car hosit and method.
Background technology
Car hosit drives the arm tube by the telescopic oil cylinder that is positioned at arm tube inside and finishes expanding-contracting action, and the arm tube self has certain weight, and oil cylinder will be born these weight in driving the flexible process of arm tube.The actual supporting power of oil cylinder is calculated with the maximum static lotus, and arm tube weight can not damaged oil cylinder in the load-bearing scope of oil cylinder, if hang loads in the telescopic process, the weight of weight and arm tube is added up above the load-bearing scope of oil cylinder, will cause damage to oil cylinder.
General hoisting crane does not possess band and carries Telescopic, and a band year expanding-contracting action is not limited yet.There is violation operation in top, market user, is with by force to carry on the vehicle that does not possess this function and stretches.Band carries the flexible part power element that can cause and damages, for example: damage the telescopic oil cylinder sealing and cause faults such as leakage of oil, the damage of rope row carriage; For a long time band carries and flexiblely can cause telescopic oil cylinder to be scrapped, as piston rod pulled, bending etc.
At present, judge whether that by the moment percentum overload limits expanding-contracting action usually, when flexible whether with carry without any restriction.The moment percentum: actual lift heavy amount is calculated the ratio of the stall torque that can bear under the moment get and this operating mode under certain amplitude and the brachium operating mode by limiter of moment.Same hoisting capacity, at operating mode difference (as the crane arm elevation angle, brachium etc.), the moment percentum is different.Under the situation as basic arm or galianconism length, even weight is 500Kg, because this moment, maximum authorized payload was very big, so the moment percentum is very little, has only 1%-5%; But in the time of long-armed length, even weight is 200Kg, because this moment, maximum authorized payload was less, so the moment percentum is very big, can reach the especially full semi-girder of 50%-80%(, auxiliary operating mode).
That is to say that when basic arm or galianconism length, in the scope that the moment percentum allows, the user can hang in violation of rules and regulations carries a very heavy weight object, the more big damage rate that telescopic oil cylinder is caused of weight quality is more serious.Even the User Violations operation is hung when telescopic boom and carried heavy weight object, as long as this moment, the moment percentum was no more than 100%, expanding-contracting action all can carry out.If it is flexible that the long-time band in violation of rules and regulations of user carries, certainly will cause damage to power element and telescopic oil cylinder.
Therefore, need a kind of new flexible fender guard, method of car hosit arm tube.
Summary of the invention
In view of this, the technical matters that the present invention will solve provides the flexible fender guard of a kind of car hosit arm tube, carries flexible load threshold value according to band and judges whether to carry out the flexible operation of arm tube.
The fender guard that a kind of car hosit arm tube is flexible comprises: load-measuring device and control setup; Described load-measuring device and described control setup are connected on the CAN bus; Wherein, in the process that the arm tube stretches, described load-measuring device obtains the actual payload of the oil cylinder that drives the contraction of arm tube, and described actual payload is sent to described control setup; When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup was controlled described car hosit and is stopped the flexible operation of arm tube.
According to an embodiment of device of the present invention, further, described load-measuring device comprises: be arranged on the oil cylinder chamber of described oil cylinder and the pressure sensor in the rodless cavity.
According to an embodiment of device of the present invention, further, also comprise: store the memory storage that described band carries flexible load threshold value.
According to an embodiment of device of the present invention, further, also comprise: read out instrument; Described read out instrument is electrically connected with described control setup.
According to an embodiment of device of the present invention, further, also comprise: annunciator or alarm lamp; Described annunciator or alarm lamp all are electrically connected with described control setup.
According to an embodiment of device of the present invention, further, described load-measuring device also comprises: height limitator and angular transducer.
A kind of car hosit comprises the fender guard that aforesaid car hosit arm tube is flexible.
The technical matters that the present invention will solve provides the flexible guard method of a kind of car hosit arm tube, carries flexible load threshold value according to band and judges whether to carry out the flexible operation of arm tube.
The guard method that a kind of car hosit arm tube is flexible comprises: in the process that the arm tube stretches, load-measuring device obtains the actual payload of the oil cylinder that drives the contraction of arm tube, and described actual payload is sent to described control setup; When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup is controlled described car hosit, and to stop the arm tube flexible; Wherein, described load-measuring device and described control setup all are connected on the CAN bus.
According to one embodiment of the method for the invention, further, described load-measuring device by being arranged on described oil cylinder the oil cylinder chamber and the pressure sensor in the rodless cavity, obtain described actual payload.
According to one embodiment of the method for the invention, further, show that at read out instrument described actual payload and described band carry flexible load threshold value; When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup is controlled described car hosit, and to stop the arm tube flexible, and the control annunciator gives the alarm or controls the alarm lamp flicker
Fender guard, car hosit and method that car hosit arm tube of the present invention is flexible; can carry expanding-contracting action to band limits; avoiding the client to be with by force to carry on the vehicle that does not possess band year Telescopic stretches; protection telescopic oil cylinder and relevant power element are not damaged; prolong the service life of vehicle, strengthened the safety of user in operating process.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the scheme drawing according to an embodiment of the flexible fender guard of car hosit arm tube of the present invention;
Fig. 2 is the diagram of circuit according to an embodiment of the flexible guard method of car hosit arm tube of the present invention;
Fig. 3 is the diagram of circuit according to another embodiment of the flexible guard method of car hosit arm tube of the present invention.
The specific embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the scheme drawing according to an embodiment of the flexible fender guard of car hosit arm tube of the present invention.As shown in Figure 1: the flexible fender guard of car hosit arm tube comprises: load-measuring device 2 and control setup 3.
Load-measuring device 2 and control setup 1 are connected on the CAN bus.CAN is Controller Area Network abbreviation, belongs to the category of fieldbus, is a kind of serial communication bus of many master modes.Arbitrary node on the network all can initiatively send message.When bus was idle, all nodes all can begin to send message.The node of access bus can obtain transmission route at first.When a plurality of nodes send simultaneously, carry out bus access control according to the preceence of message rather than the preceence of node.
The CAN bus realizes is data communication between load-measuring device 2 and the control setup 3, also can adopt other bus mode to realize data communication.
In the process that the arm tube stretches, load-measuring device 2 obtains the actual payload of the oil cylinder 6 that drives the contraction of arm tube, and actual payload is sent to control setup 1.
When control setup 1 judged that actual payload carries flexible load threshold value greater than default band, control setup 1 control car hosit stopped the flexible operation of arm tube.
According to one embodiment of present invention, load-measuring device 2 comprises the oil cylinder chamber that is arranged on oil cylinder 6 and the pressure sensor in the rodless cavity.
Band carries a flexible load threshold value and can be stored in the control setup 1, memory storage 4 files also can be set carry flexible load threshold value.Read out instrument 3 is electrically connected with control setup 1.Annunciator 5 or alarm lamp are electrically connected with control setup 1.
Load-measuring device also comprises: height limitator and angular transducer, be used for to measure the lifting angle of arm, and carry out spacing to the height of arm.
According to one embodiment of present invention, the pressure sensor that is installed on amplitude oil cylinder rod chamber and the rodless cavity is measured after the actual payload, enter control setup 1 through conversion, drawn through complicated calculations by control setup 1 in conjunction with hoisting crane performance structure parameter, wherein the performance structure parameter of hoisting crane is stored in the memory storage 4.
According to one embodiment of present invention, actual payload (load-carrying) value of measuring being carried out filtering handles.The filtering method that adopts has multiple, for example, because the impact of pressure can cause the momentary fluctuation of actual load-carrying, be set a time period, the a plurality of load-carrying signals of continuous acquisition, with the signal ordering, remove excessive, too small signal then, the part in the middle of only keeping, get different weights according to the time point of gathering again, add up then and be averaged, aviation value as the actual payload after handling, is reached the purpose that filtering is handled.
Carry flexible load threshold value (bigger than normal than light mass) according to band a band year expanding-contracting action is limited, and the load to actual measurement only carries out the filtering processing when bump.When band carries the protection restriction, handle must be got back to meta and also open again, can stretch.
Handle refers to bar handle, is used for gathering user's demand, such as: the user need put down weight, just handle is promoted forward; The user need promote weight, just handle is promoted backward.
Open again after handle must being returned meta, if user's handle is not got back to initial condition (being meta), this moment, the signal of handle was in bigger state, if the user activates relevant limit, hoisting crane can be jerked, can cause bigger impact, all have certain danger for equipment and personnel; If but handle is got back to initial condition (being meta) at this moment without any the action execution, the user moves at driving handle then, this moment is because user's incoming signal is by excessively importing to large-signal that less signal relaxes, the action meeting of control this moment slowly increases from slow to fast, the impact of hoisting crane action is little, all is comparison safety with respect to personnel and equipment.
Be example with certain model car hosit, carry out many tests, under different operating modes, handle openings with maximum, maximum throttle is tested, and the actual lift heavy amount of demonstration is the actual suspension hook 0.5t of 1.5t(to the maximum), thereby select maximum weight is amplified to 2.5t.
Because oil cylinder reality is calculated with the maximum static lotus, namely a small amount of band carries and can not damage oil cylinder, in addition by the design of value bigger than normal, can eliminate certain system pressure fluctuation, impact the influence for Rule of judgment.
According to one embodiment of present invention, a kind of car hosit comprises the flexible fender guard of car hosit arm tube as above.
Fig. 2 is the diagram of circuit according to an embodiment of the flexible guard method of car hosit arm tube of the present invention.As shown in Figure 2:
According to one embodiment of present invention, load-measuring device by being arranged on oil cylinder the oil cylinder chamber and the pressure sensor in the rodless cavity, obtain actual payload.
Show that at read out instrument actual payload and band carry flexible load threshold value.When control setup judged that actual payload carries flexible load threshold value greater than default band, it is flexible that control setup control car hosit stops the arm tube, and the control annunciator gives the alarm or controls the alarm lamp flicker.
Fig. 3 is the diagram of circuit according to another embodiment of the flexible guard method of car hosit arm tube of the present invention.As shown in Figure 3:
Because the impact effect of automobile hydraulic system, can have actual lift heavy amount excessive problem of moment, this just may cause the erroneous judgement of limit movement disconnected, at this problem, the actual measurement weight (AMW) value that receives from CAN is carried out filtering handle, eliminate this moment impact.
In order to strengthen safety, to avoid bump, after band occurring and carrying flexible restriction, open again after handle must being got back to meta, and actual lift heavy amount is less than preset value, just flexible can the action.
Flexible fender guard, car hosit and the method for car hosit arm tube of the present invention not only satisfies user's demand, also will protect vehicle and security of users to greatest extent simultaneously.
One side can limit a band year expanding-contracting action, avoids the client to be with by force to carry on the vehicle that does not possess band year Telescopic and stretches, and protection telescopic oil cylinder and relevant power element are not damaged, and have prolonged the service life of vehicle.
Filter function and handle return middle bit function in addition, and it is disconnected to have eliminated the erroneous judgement that reasons such as impact cause, and have not only guaranteed the accuracy of qualifications, have also strengthened the safety of user in operating process.
May realize method and system of the present invention in many ways.For example, can realize method and system of the present invention by any combination of software, hardware, firmware or software, hardware, firmware.The said sequence that is used for the step of method only is in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless special version otherwise.In addition, in certain embodiments, can be the program that is recorded in the recording medium with the invention process also, these programs comprise for the machine readable instructions that realizes the method according to this invention.Thereby the present invention also covers the recording medium that storage is used for the program of execution the method according to this invention.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. the fender guard that car hosit arm tube is flexible is characterized in that, comprising:
Load-measuring device and control setup; Described load-measuring device and described control setup are connected on the CAN bus;
Wherein, in the process that the arm tube stretches, described load-measuring device obtains the actual payload of the oil cylinder that drives the contraction of arm tube, and described actual payload is sent to described control setup; When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup was controlled described car hosit and is stopped the flexible operation of arm tube.
2. device as claimed in claim 1 is characterized in that:
Described load-measuring device comprises: be arranged on the oil cylinder chamber of described oil cylinder and the pressure sensor in the rodless cavity.
3. device as claimed in claim 1 is characterized in that:
Also comprise: store the memory storage that described band carries flexible load threshold value.
4. device as claimed in claim 1 is characterized in that:
Also comprise: read out instrument;
Described read out instrument is electrically connected with described control setup.
5. device as claimed in claim 1 is characterized in that:
Also comprise: annunciator or alarm lamp;
Described annunciator or alarm lamp all are electrically connected with described control setup.
6. device as claimed in claim 1 is characterized in that:
Described load-measuring device also comprises: height limitator and angular transducer.
7. a car hosit is characterized in that, comprising:
As the flexible fender guard of each described car hosit arm tube of claim 1 to 6.
8. the guard method that car hosit arm tube is flexible is characterized in that, comprising:
In the process that the arm tube stretches, load-measuring device obtains the actual payload of the oil cylinder that drives the contraction of arm tube, and described actual payload is sent to control setup;
When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup is controlled described car hosit, and to stop the arm tube flexible;
Wherein, described load-measuring device and described control setup all are connected on the CAN bus.
9. method as claimed in claim 8 is characterized in that:
Described load-measuring device by being arranged on described oil cylinder the oil cylinder chamber and the pressure sensor in the rodless cavity, obtain described actual payload.
10. method as claimed in claim 9 is characterized in that:
Show that at read out instrument described actual payload and described band carry flexible load threshold value;
When described control setup judged that described actual payload carries flexible load threshold value greater than default band, described control setup is controlled described car hosit, and to stop the arm tube flexible, and the control annunciator gives the alarm or controls the alarm lamp flicker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312346.0A CN103332617B (en) | 2013-07-24 | 2013-07-24 | Extension and retraction protection device and method for suspension arm barrel of automobile crane and automobile crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312346.0A CN103332617B (en) | 2013-07-24 | 2013-07-24 | Extension and retraction protection device and method for suspension arm barrel of automobile crane and automobile crane |
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| Publication Number | Publication Date |
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| CN103332617A true CN103332617A (en) | 2013-10-02 |
| CN103332617B CN103332617B (en) | 2015-06-17 |
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| CN201310312346.0A Active CN103332617B (en) | 2013-07-24 | 2013-07-24 | Extension and retraction protection device and method for suspension arm barrel of automobile crane and automobile crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651565A (en) * | 2017-08-28 | 2018-02-02 | 北汽福田汽车股份有限公司 | A kind of method of inspection, device and the limiter of moment of Car Crane Retractable Arms operating mode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2210852A2 (en) * | 2009-01-21 | 2010-07-28 | Manitowoc Crane Companies, LLC | Hydraulic system thermal contraction compensation apparatus and method |
| CN102431919A (en) * | 2011-10-14 | 2012-05-02 | 三一汽车起重机械有限公司 | Crane, telescopic arm, telescopic action protection device and method thereof |
| CN202704896U (en) * | 2012-06-28 | 2013-01-30 | 三一汽车起重机械有限公司 | Crane and protection device for telescopic boom of same |
| CN203428829U (en) * | 2013-07-24 | 2014-02-12 | 徐州重型机械有限公司 | Device for protecting stretching and contracting of boom cylinder of automobile crane, and automobile crane |
-
2013
- 2013-07-24 CN CN201310312346.0A patent/CN103332617B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2210852A2 (en) * | 2009-01-21 | 2010-07-28 | Manitowoc Crane Companies, LLC | Hydraulic system thermal contraction compensation apparatus and method |
| CN102431919A (en) * | 2011-10-14 | 2012-05-02 | 三一汽车起重机械有限公司 | Crane, telescopic arm, telescopic action protection device and method thereof |
| CN202704896U (en) * | 2012-06-28 | 2013-01-30 | 三一汽车起重机械有限公司 | Crane and protection device for telescopic boom of same |
| CN203428829U (en) * | 2013-07-24 | 2014-02-12 | 徐州重型机械有限公司 | Device for protecting stretching and contracting of boom cylinder of automobile crane, and automobile crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651565A (en) * | 2017-08-28 | 2018-02-02 | 北汽福田汽车股份有限公司 | A kind of method of inspection, device and the limiter of moment of Car Crane Retractable Arms operating mode |
| CN107651565B (en) * | 2017-08-28 | 2019-07-19 | 北汽福田汽车股份有限公司 | A kind of method of inspection, device and the limiter of moment of Car Crane Retractable Arms operating condition |
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| Publication number | Publication date |
|---|---|
| CN103332617B (en) | 2015-06-17 |
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Address after: 221001 Jiangsu city of Xuzhou Province Economic and Technological Development Zone of High Road No. 68 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |