CN104528541B - A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder - Google Patents
A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder Download PDFInfo
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- CN104528541B CN104528541B CN201410775919.8A CN201410775919A CN104528541B CN 104528541 B CN104528541 B CN 104528541B CN 201410775919 A CN201410775919 A CN 201410775919A CN 104528541 B CN104528541 B CN 104528541B
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- arm
- bent plate
- hyperextension
- detection
- proximity switch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention belongs to the anti-hyperextension field of hoist cylinder, the anti-hyperextension device of specifically related to a kind of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, it is characterized in that, also include that described detection seat is provided with anti-hyperextension detection means positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm, the arm position detection slide block being fixed on telescopic oil cylinder and proximity switch；When described proximity switch detects anti-hyperextension detection means, on-off model is sent to controller, and logic judgment is made by controller and limits telescopic oil cylinder continuation extension action.The present invention mainly has the advantage that：The danger for preventing artificial maloperation from causing；Do not need the long line of cylinder to participate in, improve accuracy of detection；An electrical control is carried out before structure is spacing spacing, double shield telescoping cylinder prevents the hyperextension that maloperation causes, and substantially increases the security of whole machine.
Description
Technical field
The invention belongs to the anti-hyperextension field of hoist cylinder, and in particular to a kind of anti-hyperextension of single cylinder bolt-type hoist cylinder
Device.
Background technology
Single cylinder bolt-type telescopic system：It is that one kind is built in crane semi-girder, realizes that crane is stretched by telescopic oil cylinder
A kind of device of the Telescopic of arm.Mainly it is made up of semi-girder and telescopic oil cylinder, wherein arm pin, cylinder pin, dovetail groove, detection switch
And other auxiliary equipment, it is that flexible main function components realized by semi-girder, referring to Fig. 1.
Concrete structure includes：
Cylinder head body：It is located on telescopic oil cylinder cylinder barrel or piston rod, for controlling between telescopic oil cylinder and semi-girder, semi-girder and stretches
Connection and detached device is realized between arm, is mainly included arm pin driving means, cylinder pin, is driven oil cylinder, position detection block etc..
Cylinder pin：Pin on telescopic oil cylinder, it is to lock together oil cylinder and semi-girder to work.Each cylinder head in existing product
Generally there are 2 or 4 cylinder pins.
Arm pin：Pin on semi-girder, its act as locking together each section semi-girder.Existing product each cylinder head is generally used
1 or 2 arm pins.
Detection switch：For detecting the sensor of the arm position, cylinder pin and the unblock of arm pin and locking state of each joint arm.
Crane is when hoisting arm expansion is carried out, it is necessary first to the cylinder pin of telescopic oil cylinder is retracted, as shown in Fig. 2 now stretching
In empty cylinder state, i.e. telescopic oil cylinder can carry out relative motion inside semi-girder to contracting oil cylinder, according to the arm of telescopic oil cylinder afterbody
Position detection switch combines the arm position detection slide block of each section semi-girder afterbody, it may be determined that the position that current telescopic oil cylinder is located.
Schematic diagram when Fig. 3 is minor details arm and telescoping cylinder detection arm position, from figure as can be seen that detection seat is fixed on minor details
On arm, proximity switch is fixed on telescopic oil cylinder, as the movement of telescopic oil cylinder, proximity switch and detection seat realize relative fortune
Dynamic, and then realize the detection of arm position.When proximity switch is in position A, arm position can be detected just now, according to specification
Operation, now should release cylinder pin, continue forward promote oil cylinder, when the B of proximity switch in-position, cylinder pin is automatically inserted into minor details
In arm arm tail cylinder key seat, the flexible of six joint arms is just can achieve.It can be seen that when proximity switch is in position A and position C
Between when, arm position detection lamp bright, can detect that six joint arm arm tails, if maloperation occurs in operator, proximity switch reached position D
When, situation about sliding down with hyperextension is now will appear from, the damage of frame for movement can be caused, threaten whole machine security.
Meanwhile, when the detection switch of telescopic oil cylinder afterbody detects the arm position of minor details arm, the other end position of telescopic oil cylinder
Inside minor details arm head, telescopic oil cylinder end is in small distance foremost with minor details arm arm head, when misoperation, will cause and stretch
Contracting oil cylinder hyperextension, breaks the jib tip structure of minor details arm, is therefore typically considered as structure in rubber tyre gantry crane design spacing realizing
Anti- hyperextension, while can also prevent telescoping cylinder from directly disclosing minor details arm arm head.
When oil cylinder and postive stop baffle structure are collided, the very big sound can be sent, be rocked with seasonal whole machine, affect operation to relax
Adaptive and whole machine security.Therefore consider how, before oil cylinder and postive stop baffle are collided, just to realize the spacing of telescoping cylinder, to reach
Purpose to anti-hyperextension.This patent is combination arm tail detection means on this basis, realizes telescoping cylinder by electrical control
Anti- hyperextension technology.
In order to prevent telescopic oil cylinder hyperextension, currently existing scheme from being：When the detection switch of telescopic oil cylinder afterbody detects minor details
During arm arm position, telescopic oil cylinder continues extension, pays close attention to whether arm position detection signal disappears by controller, if detection signal disappears
Lose, then oil cylinder is limited by controller and continue extension action.
Existing technology is suffered from the drawback that：
1. whether prior art is disappeared by arm position detection switch signal and judges telescopic oil cylinder whether hyperextension, there is failure wind
Danger.For part contilever structure, which detects the gap of the length of seat more than telescopic oil cylinder and minor details arm, when arm position detection switch still
During not entirely through detection seat, now arm position detection signal not yet disappears, the end of telescopic oil cylinder arm head with minor details arm
Structure is clashed into.
2. telescopic oil cylinder is moved along the slideway of semi-girder tail inner side inside the semi-girder, when the arm position of telescopic oil cylinder afterbody is examined
When slowdown monitoring switch detects seat by minor details arm completely, cylinder head body will completely disengage from the slideway inside semi-girder.Therefore, prior art is deposited
In the risk that telescopic oil cylinder departs from slideway, that is, there is the phenomenon that slides down that often says in field.
Content of the invention
It is an object of the invention to provide a kind of anti-hyperextension device of single-cylinder plug type telescopic jib crane oil cylinder, it is to avoid flexible oil
Cylinder hyperextension breaks jib tip structure.
To achieve these goals, the technical solution used in the present invention is：A kind of single cylinder bolt-type hoist cylinder is prevented
Hyperextension device, including telescopic oil cylinder, the minor details arm of crane semi-girder, it is characterised in that also include positioned at minor details arm arm tail and/or
By the outwardly directed detection seat of minor details arm arm tail, the arm position detection slide block being fixed on telescopic oil cylinder and proximity switch, described
Detection seat is provided with anti-hyperextension detection means；Described proximity switch detects anti-hyperextension with detection seat relative motion, proximity switch
During detection means, i.e., proximity switch detects particular detection signal, and controls telescopic oil cylinder stopping extending action by controller.
Further, described detection seat is located at minor details arm arm tails, detects that seat is provided with and cooperates with proximity switch
First bent plate, described anti-hyperextension detection means are the second bent plate below the first bent plate；Second bent plate and proximity switch
Position mutually to corresponding when extend through precalculated position.Precalculated position refers to that cylinder pin should be automatically inserted into minor details arm arm tail cylinder
Telescopic oil cylinder location during key seat.（As follows）
Also or, described detection seat is overhang by the first detection block for being located at minor details arm arm tail and by minor details arm arm Caudad
The second detection block constitute, the length of the second detection block is less than the first detection block；Second detection block is anti-hyperextension detection means, the
Two detection blocks and proximity switch position mutually to corresponding when extend through precalculated position.
Also or, described detection seat is located at minor details arm arm tail and overhangs one section by minor details arm arm Caudad, detects seat bag
The end for including the 3rd bent plate and the 4th bent plate below the 3rd bent plate, the 3rd bent plate and the 4th bent plate is outside by minor details arm
Stretch out, outwardly directed bent plate constitutes anti-hyperextension detection means, anti-hyperextension detection means are mutually corresponding with the position of proximity switch
When telescopic oil cylinder extend through precalculated position.
Further, when proximity switch detects particular detection signal, on-off model is sent to controller, by controlling
Device is made logic judgment and limits telescopic oil cylinder and continues extension action.
Described proximity switch is 2, and particular detection signal refers to upper and lower 2 proximity switches while bright.
Described proximity switch is located on arm position detection slide block, and arm position detection slide block is along the direction closer or far from detection seat
Mobile.
A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, its
It is characterised by, also includes positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm, be fixed on telescopic oil cylinder
Arm position detection slide block and proximity switch, described proximity switch along the direction movement closer or far from detection seat, examine by proximity switch
Measure detection seat signal specific when, send on-off model to controller, and made logic judgment and limited by controller and stretching
Contracting oil cylinder continues extension action.
A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, its
It is characterised by, also includes positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm, be fixed on telescopic oil cylinder
Arm position detection slide block and proximity switch, described proximity switch is along the direction movement closer or far from detection seat, described detection
Seat is provided with anti-hyperextension detection means, and when described proximity switch moves to anti-hyperextension detection means, telescopic oil cylinder extends through pre-determined bit
Put, telescopic oil cylinder is controlled by controller and stops extending action.
The key problem in technology point of the present invention is：
1）Anti- hyperextension is realized by electrical control and structure optimization.
2）Particular detection signal is given, the spacing control that hydraulic system is realized by director demon.
The present invention mainly has the advantage that：
1）Anti- hyperextension is realized by electrical control and structure optimization, the danger for preventing artificial maloperation from causing, such as slide down,
Structure is spacing rocking of causing.
2）Structure optimization variation is less, only increases the purpose that one piece of bent plate just can achieve anti-hyperextension, therefore the present invention
Hardly increase cost, while being easily achieved.
3）The anti-hyperextension technology that the present invention is mentioned, just can achieve before structure is spacing, structure is spacing often bring huge
Big vibration, if while structure is not spacing firm, easily directly destroying structure stopping means or telescoping cylinder, causing danger.This
Plant the technology that anti-hyperextension was just realized before structure is spacing, not only protect structure stopping means and telescoping cylinder, while reducing
The spacing danger that brings of structure.
4）The anti-hyperextension technology that the present invention is mentioned is realized by giving specific detection signal, in the process, is not required to
Want the long line of cylinder to participate in, improve accuracy of detection.
5）An electrical control is carried out before structure is spacing spacing, double shield telescoping cylinder prevents maloperation from causing
Hyperextension, substantially increases the security of whole machine.
Description of the drawings
Fig. 1 single cylinder bolt-type telescopic system schematic diagrames；
Fig. 2 cylinders pin is retracted and finds arm position schematic diagram；
Schematic diagram when Fig. 3 is minor details arm and telescoping cylinder detection arm position；
The structure chart of the existing anti-hyperextension devices of Fig. 4；
Fig. 5 is the structure chart of existing arm level detecting apparatus；
Fig. 6 is arm level detecting apparatus detailed schematic；
Fig. 7 is the detection holder structure figure of improved one embodiment；
Fig. 8 is the detection logical schematic of improved one embodiment；
Fig. 9 is the structure chart of improved second embodiment；
Figure 10 is the structure chart of improved 3rd embodiment；
Wherein, 1. 4. proximity switch of slide block, 5. minor details arm, 6. telescopic oil cylinder is detected in 3. arm position of the detection seat of the first bent plate 2.
7. the 4th bent plate of the second 8. second the 3rd bent plate 10. of detection block 9. of bent plate.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for the present invention is clearly described
Technical scheme, and can not be limited the scope of the invention with this.
In prior art, Fig. 3 is minor details arm（Actual is minor details arm arm tail）And schematic diagram during telescoping cylinder detection arm position, from
As can be seen that detection seat 2 is fixed on minor details arm 5 on figure, proximity switch 4（For detecting sensor, or become detection and open
Close）It is fixed on telescopic oil cylinder 6, as the movement of telescopic oil cylinder 6, proximity switch 4 and detection seat 2 realize relative motion, and then
Realize the detection of arm position.When proximity switch 4 is in position A, arm position can be just detected now, according to the operation of specification,
Now should release cylinder pin, continue forward promote oil cylinder, when 4 in-position B of proximity switch, cylinder pin is automatically inserted into minor details arm arm
In tail cylinder key seat, the flexible of six joint arms is just can achieve.It can be seen that when proximity switch 4 in position A and position C it
Between when, arm position detection lamp bright, can detect that six joint arm arm positions, if maloperation occurs in operator, proximity switch reached position D
When, situation about sliding down with hyperextension is now will appear from, the damage of frame for movement can be caused, threaten whole machine security.
Meanwhile, when the proximity switch of telescopic oil cylinder afterbody detects the arm position of minor details arm, the other end position of telescopic oil cylinder
Inside minor details arm head, telescopic oil cylinder end is in small distance foremost with minor details arm arm head, when misoperation, will cause and stretch
Contracting oil cylinder hyperextension, breaks the jib tip structure of minor details arm, is therefore typically considered as structure in rubber tyre gantry crane design spacing realizing
Anti- hyperextension, while can also prevent telescoping cylinder from directly disclosing minor details arm arm head.
When oil cylinder and postive stop baffle structure are collided, the very big sound can be sent, be rocked with seasonal whole machine, affect operation to relax
Adaptive and whole machine security.Therefore consider how, before oil cylinder and postive stop baffle are collided, just to realize the spacing of telescoping cylinder, to reach
Purpose to anti-hyperextension.This patent is combination arm tail detection means on this basis, realizes telescoping cylinder by electrical control
Anti- hyperextension technology.
In order to prevent telescopic oil cylinder hyperextension, currently existing scheme from being：Detection switch when telescopic oil cylinder afterbody（It is close to and opens
Close）When detecting minor details arm arm position, telescopic oil cylinder continues extension, pays close attention to whether arm position detection signal disappears by controller,
If detection signal disappears, oil cylinder is limited by controller and continues extension action.
Existing technology is suffered from the drawback that：
1. whether prior art is disappeared by arm position detection switch signal and judges telescopic oil cylinder whether hyperextension, there is failure wind
Danger.For part contilever structure, which detects the gap of the length of seat more than telescopic oil cylinder and minor details arm, when arm position detection switch still
During not entirely through detection seat, now arm position detection signal not yet disappears, the end of telescopic oil cylinder arm head with minor details arm
Structure is clashed into.
2. telescopic oil cylinder is moved along the slideway of semi-girder tail inner side inside the semi-girder, when the arm position of telescopic oil cylinder afterbody is examined
When slowdown monitoring switch detects seat by minor details arm completely, cylinder head body will completely disengage from the slideway inside semi-girder.Therefore, prior art is deposited
In the risk that telescopic oil cylinder departs from slideway, that is, there is the phenomenon that slides down that often says in field.
The present invention basic thought be by the way of electrical control and combining positioned at the anti-hyperextension detection means of arm tail,
Minor details arm arm tail detection seat is processed, specific proximity switch detection signal is set, slide down with structure spacing before, real
The anti-hyperextension of existing telescoping cylinder is spacing.
Fig. 5 is common arm level detecting apparatus detail view, and its critical piece is：The detection seat 2 that is fixed at semi-girder arm tail and
For the first bent plate 1 of detection arm position, the arm position detection slide block 3 being fixed on telescopic oil cylinder and proximity switch 4.Its movement mechanism
It is that slide block 3 is detected as the motion of telescopic oil cylinder progressively presses close to detect seat 2 in proximity switch 4 and arm position, when the first bent plate 1 covers completely
During the detection range of lid proximity switch 4, arm position detection lamp is bright.In conjunction with Fig. 6, when proximity switch 4 is in position B, cylinder pin is automatic
Plug, can achieve semi-girder and stretch, now proximity switch is exactly in the centre of bent plate.In general design, the first bent plate 1
Length is generally the maximal clearance of 200 ~ 300mm, cylinder pin and cylinder key seat and is generally 20mm or so, then sell out in cylinder and plug entirely it
Afterwards, the distance of 1 80 ~ 130mm of residue of the first bent plate or so is not used.And this patent is carried out for the bent plate of this 80 ~ 130mm
Improve, by arranging specific proximity switch detection signal, reach the purpose of anti-hyperextension.
Fig. 7 is the detection holder structure form of the one embodiment after improving, and which is primarily directed on the first bent plate 1 not
The part for using is transformed, and increases by one piece of second bent plate 7 for being used for detection in bottom（For anti-hyperextension detection means）.In conjunction with figure
8, its operation principle is：Proximity switch 4 is slided in detection seat 2 with oil cylinder, and when which is in A ~ B location, cylinder pin can be inserted completely
Enter in cylinder key seat.If now there is maloperation, operator does not notice that arm position detection lamp is bright in time, not release cylinder pin in advance,
During position after causing proximity switch 4 to move to B, even if release cylinder pin, also cannot be inserted in cylinder key seat, if operator is still
Continue to stretch out telescoping cylinder, proximity switch 4 continues to move ahead, and when location of C is moved to, proximity switch 4 detects signal specific, says
Bright now telescopic oil cylinder has extended through precalculated position, after controller detects this signal specific, by corresponding control program, limits
Telescopic oil cylinder continues extension, so as to reach the purpose for preventing telescopic oil cylinder hyperextension.Which is carried out more on detection seat 2
Change, when hyperextension is detected, telescoping cylinder does not also completely disengage from minor details arm slideway, is not in not only the phenomenon for sliding down, can also be
Anti- hyperextension is realized before structure is spacing.
Note：The particular detection signal that selectes in this example is upper and lower proximity switch while bright.Additionally, adopting two proximity switches
When, its detectable signal has 16 kinds, it is only necessary to which the detection signal for selecting other joint arms a kind of not use wherein is used as specific
Detection signal, just can realize desired purpose of the invention.
For technical scheme, mainly there is below scheme replace：
As shown in figure 9, increasing a short slide block or steel plate after minor details arm（Which is anti-hyperextension detection means, is also
Two detection blocks 8）, minor details arm tail end be the first detection block（Detection seat phase i.e. equivalent to detection seat of the prior art, with Fig. 5
With）Its operation principle is：When operator's maloperation, the proximity switch 4 on telescopic oil cylinder slides entirely over detection seat 2（I.e. first
Detection block）, and continue to move ahead, when proximity switch starts the slide block or steel plate for detecting rear tail increase, now receive
Specific detection signal（As proximity switch all light signal）, controller stopping oil cylinder being will pass through when the signal is detected to be stretched out
Action.
As shown in Figure 10, its operation principle is：The detection seat 2 of minor details arm arm tail is lengthened, while increase anti-hyperextension using
The detection length of particular detection signal, when the proximity switch on telescopic oil cylinder detects signal specific, will pass through controller and stops
Only oil cylinder extending action.Described detection seat 2 is located at minor details arm arm tail and by 5 protruding one sections of minor details arm, and detection seat includes
The end of the 3rd bent plate 9 and the 4th bent plate 10 below the 3rd bent plate, the 3rd bent plate and the 4th bent plate by minor details arm to
Overhang, outwardly directed bent plate constitutes anti-hyperextension detection means, anti-hyperextension detection means and proximity switch mutually to corresponding when
Contracting oil cylinder extends through precalculated position.
By giving particular detection signal, other realize that the method for the anti-hyperextension of telescoping cylinder belongs to the protection model of the patent
Farmland.
General principle, principal character and the advantage of the present invention has been shown and described above.The technical staff of the industry should
Understand, the present invention is not restricted to the described embodiments, the original that the present invention is simply described described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent circle.
Fixed.
Claims (6)
1. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, which is special
Levy and be, also include positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm arm tail, be fixed on telescopic oil cylinder
Arm position detection slide block and proximity switch, described detection seat is provided with anti-hyperextension detection means；Described proximity switch and detection
Seat relative motion, when proximity switch detects anti-hyperextension detection means, i.e., proximity switch detects particular detection signal, and passes through
Controller control telescopic oil cylinder stops extending action；
Described detection seat is located at minor details arm arm tail, and detection seat is provided with the first bent plate cooperated with proximity switch, described
Anti- hyperextension detection means be the second bent plate below the first bent plate, the second bent plate and proximity switch position mutually to corresponding when
Telescopic oil cylinder extends through precalculated position；Or, described detection seat is located at minor details arm arm tail and overhangs one by minor details arm arm Caudad
Section, detection seat include that the end of the 3rd bent plate and the 4th bent plate below the 3rd bent plate, the 3rd bent plate and the 4th bent plate is equal
Protruding by minor details arm, outwardly directed bent plate constitutes anti-hyperextension detection means, anti-hyperextension detection means and proximity switch
Position mutually to corresponding when extend through precalculated position.
2. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder according to claim 1, it is characterised in that be close to and open
When pass detects particular detection signal, on-off model is sent to controller, made logic judgment and limited flexible by controller
Oil cylinder continues extension action.
3. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder according to claim 2, it is characterised in that described
Proximity switch is 2, and particular detection signal refers to upper and lower 2 proximity switches while bright.
4. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder according to claim 1, it is characterised in that described
Proximity switch is located on arm position detection slide block, and detection slide block in arm position is along the direction movement closer or far from detection seat.
5. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, which is special
Levy and be, also include positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm, the arm being fixed on telescopic oil cylinder
Position detection slide block and proximity switch, along the direction movement closer or far from detection seat, proximity switch is detected described proximity switch
To detection seat signal specific when, send on-off model to controller, and made logic judgment and limited flexible by controller
Oil cylinder continues extension action；
Described detection seat is located at minor details arm arm tail, and detection seat is provided with the first bent plate cooperated with proximity switch, anti-mistake
It is the second bent plate below the first bent plate to stretch detection means, the second bent plate and proximity switch position mutually to corresponding when oil
Cylinder extends through precalculated position；Or, described detection seat is located at minor details arm arm tail and overhangs one section by minor details arm arm Caudad, detects
Seat includes the end of the 3rd bent plate and the 4th bent plate below the 3rd bent plate, the 3rd bent plate and the 4th bent plate by minor details arm
Protruding, outwardly directed bent plate constitutes anti-hyperextension detection means, and anti-hyperextension detection means are mutual with the position of proximity switch
To corresponding when extend through precalculated position.
6. the anti-hyperextension device of a kind of single cylinder bolt-type hoist cylinder, including telescopic oil cylinder, the minor details arm of crane semi-girder, which is special
Levy and be, also include positioned at minor details arm arm tail and/or by the outwardly directed detection seat of minor details arm, the arm being fixed on telescopic oil cylinder
Position detection slide block and proximity switch, described proximity switch is along the direction movement closer or far from detection seat, described detection seat
Anti- hyperextension detection means are provided with, telescopic oil cylinder extends through precalculated position when described proximity switch moves to anti-hyperextension detection means,
Telescopic oil cylinder is controlled by controller and stops extending action；
Described detection seat is located at minor details arm arm tail, and detection seat is provided with the first bent plate cooperated with proximity switch, described
Anti- hyperextension detection means be the second bent plate below the first bent plate, the second bent plate and proximity switch position mutually to corresponding when
Telescopic oil cylinder extends through precalculated position；Or, described detection seat is located at minor details arm arm tail and overhangs one by minor details arm arm Caudad
Section, detection seat include that the end of the 3rd bent plate and the 4th bent plate below the 3rd bent plate, the 3rd bent plate and the 4th bent plate is equal
Protruding by minor details arm, outwardly directed bent plate constitutes anti-hyperextension detection means, anti-hyperextension detection means and proximity switch
Position mutually to corresponding when extend through precalculated position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775919.8A CN104528541B (en) | 2014-12-15 | 2014-12-15 | A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775919.8A CN104528541B (en) | 2014-12-15 | 2014-12-15 | A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder |
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| Publication Number | Publication Date |
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| CN104528541A CN104528541A (en) | 2015-04-22 |
| CN104528541B true CN104528541B (en) | 2017-03-15 |
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| CN201410775919.8A Active CN104528541B (en) | 2014-12-15 | 2014-12-15 | A kind of anti-hyperextension device of single cylinder bolt-type hoist cylinder |
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| CN105565188B (en) * | 2015-12-29 | 2018-04-13 | 中联重科股份有限公司 | Prevent oil cylinder from going out the structures and methods and arm of joint arm |
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| RU2093452C1 (en) * | 1988-12-27 | 1997-10-20 | Като Воркс Ко., Лтд. | Crane safety device |
| GB9326347D0 (en) * | 1993-12-23 | 1994-02-23 | Grove Europ Limited | Improvements in and relating to telescopic booms |
| FR2797862B1 (en) * | 1999-09-01 | 2001-11-16 | Ppm | METHOD OF TELESCOPING A CRANE BOOM, DEVICE FOR ITS IMPLEMENTATION AND CRANE BOOM BY APPLYING |
| JP4709415B2 (en) * | 2001-04-17 | 2011-06-22 | 株式会社タダノ | Control device for telescopic mechanism |
| DE10223449B4 (en) * | 2002-05-23 | 2005-03-24 | Terex-Demag Gmbh & Co. Kg | Telescopic system with telescopic telescopic device |
| CN101804945B (en) * | 2010-05-07 | 2012-09-26 | 三一汽车起重机械有限公司 | Single cylinder bolt-type telescopic arm device and arm section position detection system thereof |
| CN102180416B (en) * | 2011-01-26 | 2013-04-24 | 徐州赫思曼电子有限公司 | Electronic hyperextension-proof device of single cylinder bolt type telescopic boom crane oil cylinder |
| CN203128076U (en) * | 2013-03-19 | 2013-08-14 | 北京京城重工机械有限责任公司 | Arm position detecting device of single-cylinder plug-pin-type telescopic arm |
| CN203486801U (en) * | 2013-09-04 | 2014-03-19 | 徐州重型机械有限公司 | Crane as well as single-cylinder plug type retractable boom and boom position detection device thereof |
-
2014
- 2014-12-15 CN CN201410775919.8A patent/CN104528541B/en active Active
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