CN103277405B - Rotary member self-locking device and apply the engineering machinery of this self-locking device - Google Patents
Rotary member self-locking device and apply the engineering machinery of this self-locking device Download PDFInfo
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- CN103277405B CN103277405B CN201310248313.4A CN201310248313A CN103277405B CN 103277405 B CN103277405 B CN 103277405B CN 201310248313 A CN201310248313 A CN 201310248313A CN 103277405 B CN103277405 B CN 103277405B
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Abstract
The present invention discloses a kind of rotary member self-locking device, comprises cylinder bar and the cylinder barrel of inside and outside nested setting, is fixedly connected with respectively with rotary member with fixed component; First protuberance of cylinder bar and the inwall of cylinder barrel form first and to be rotatably assorted pair, second protuberance of described cylinder barrel and the outer surface of cylinder bar form second and to be rotatably assorted pair, and the dielectric space circumference between cylinder bar and cylinder barrel is split the first chamber and the second chamber that form opposing seal by the first protuberance and the second protuberance; First chamber and the second chamber are respectively by the switch valve orifice of the first through hole and the second through hole and normal conduction, switch valve can switch to cut-off state according to the pressure medium of the first chamber or the second chamber, to limit relatively rotating of cylinder bar and cylinder barrel.Effectively evade rotating by the component matching relationship of this self-locking device and control the hidden danger caused that lost efficacy, thus guarantee the safety reliability of overall operation.On this basis, the present invention also provides a kind of engineering machinery of this self-locking device of application.
Description
Technical field
The present invention relates to safe lock technical field, be specifically related to a kind of rotary member self-locking device and apply the engineering machinery of this self-locking device.
Background technique
Along with the development of science and technology, and the increase of current productive life high and medium job requirements, altitude operation vehicle is widely used, and substantially increases the safety reliability of the operations such as altitude plant installation, maintenance.
As everyone knows, the existing operation bucket of high-lift operation class vehicle and the connection of jib, mostly adopt sprocket wheel articulated manner; Particularly, working bucket is arranged on sprocket shaft, pulls sprocket wheel to rotate during chain movement, thus control working bucket is swayed to particular job position relative to jib.But, in the using process of long term frequent, once run into fortuitous event, such as working bucket overload, sprocket wheel clamping stagnation, shake, and the situation such as the mass defect of chain own causes chain to produce crack or inefficacy, then there is the hidden danger of chain breakage; During chain breakage, uncontrolled upset is got off by working bucket, directly causes staff in working bucket to fall, causes casualty accident, has had a strong impact on the Safety performance of product.
At present, this kind of sprocket wheel is connected to the high-lift operation class vehicle of operation bucket, the special measure preventing chain breakage from tumbling all is not set, but rely on increase chain safety coefficient to reduce chain breakage possibility, obviously cannot eliminate this possibility; In addition, this technology can reduce overload or shake etc. and cause chain breakage possibility, but cannot reduce the fracture possibility that the quality problems of chain own cause.Meanwhile, prevent chain breakage by the mode increasing chain safety coefficient, chain dimension and installing space will inevitably be increased.
In fact, be rotationally connected relative to another one in one, and need accurately to control rotation amplitude with in the middle of the matching relationship meeting security requirement, be all faced with after rotating and controlling to lose efficacy, cause the hidden danger of the abnormal rotation of rotary member.
In view of this, urgently looking for another way is optimized design for rotary member, controls effectively to avoid rotating the hidden danger that may cause that lost efficacy.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is to be provided for restriction rotary member relative to the improper rotary member self-locking device rotated of fixed component, effectively evade rotating by the component matching relationship of this self-locking device and control the hidden danger caused that lost efficacy, thus guarantee the safety reliability of overall operation.On this basis, the present invention also provides a kind of engineering machinery of this self-locking device of application.
A kind of rotary member self-locking device provided by the invention, comprise cylinder bar and the cylinder barrel of inside and outside nested setting, the one in both is used for being fixedly connected with described rotary member, and another one is used for being fixedly connected with fixed component; Described cylinder bar has outward extending first protuberance, forms first to be rotatably assorted pair with the inwall of described cylinder barrel; Described cylinder barrel has the second protuberance extended internally, form second with the outer surface of described cylinder bar to be rotatably assorted pair, and the dielectric space circumference between described cylinder bar and cylinder barrel is split the first chamber and the second chamber that form opposing seal by described first protuberance and described second protuberance; Described cylinder barrel offers respectively with the first through hole and second through hole of described first chamber and the second chamber, described first through hole and the second through hole respectively with the switch valve orifice of normal conduction, described switch valve can switch to cut-off state according to the pressure medium of described first chamber or the second chamber, to limit relatively rotating of described cylinder bar and cylinder barrel.
Preferably, the interior side opening of described first through hole and the second through hole, lays respectively on described first chamber of formation of described second protuberance and the surface of the second chamber.
Preferably, form described first and be rotatably assorted on secondary described first protuberance and be provided with the first Sealing, form described second and be rotatably assorted on secondary described second protuberance and be provided with the second Sealing, to set up described opposing seal.
Preferably, the spool of described switch valve keeps the normal conduction of interface described in two by elastic member, and by obtaining described pressure medium with the control mouth of two described orifice, to overcome the resistance of described elastic member and to switch to described cut-off state.
Another kind of rotary member self-locking device provided by the invention, comprise cylinder bar and the cylinder barrel of inside and outside nested setting, the one in both is used for being fixedly connected with described rotary member, and another one is used for being fixedly connected with fixed component; Described cylinder bar has outward extending first protuberance, forms first to be rotatably assorted pair with the inwall of described cylinder barrel; Described cylinder barrel has the second protuberance extended internally, form second with the outer surface of described cylinder bar to be rotatably assorted pair, and the dielectric space circumference between described cylinder bar and cylinder barrel is split the first chamber and the second chamber that form opposing seal by described first protuberance and described second protuberance; Described cylinder bar offers respectively with the first through hole and second through hole of described first chamber and the second chamber, described first through hole and the second through hole respectively with the switch valve orifice of normal conduction, described switch valve can switch to cut-off state according to the pressure medium of described first chamber or the second chamber, to limit relatively rotating of described cylinder bar and cylinder barrel.
Preferably, the interior side opening of described first through hole and the second through hole, lays respectively on described first chamber of formation of described first protuberance and the surface of the second chamber.
Preferably, form described first and be rotatably assorted on secondary described first protuberance and be provided with the first Sealing, form described second and be rotatably assorted on secondary described second protuberance and be provided with the second Sealing, to set up described opposing seal.
Preferably, the spool of described switch valve keeps the normal conduction of interface described in two by elastic member, and by obtaining described pressure medium with the control mouth of two described orifice, to overcome the resistance of described elastic member and to switch to described cut-off state.
A kind of engineering machinery provided by the invention, comprises the rotary member rotated relative to fixed component; Also comprise foregoing rotary member self-locking device.
Preferably, described engineering machinery is altitude operation vehicle, and have working bucket and control the driving mechanism that described working bucket rotates relative to jib, described rotary member is the rotating shaft of described working bucket, and described fixed component is described jib.
Apply rotary member self-locking device provided by the present invention, cylinder bar and the one in cylinder barrel are used for being fixedly connected with rotary member, another one is used for being fixedly connected with fixed component; Thus, cylinder bar is set up based on the rotational synchronization of working bucket and cylinder barrel relatively rotates.Particularly, the dielectric space circumference between cylinder bar and cylinder barrel splits the first chamber and the second chamber that form opposing seal, and changes the volume of two chambers when relatively rotating, and one volume increases, the corresponding reduction of another one volume; In the normal rotation control procedure of rotary member, volume reduces the switch valve of the working medium inflow normal conduction in chamber, and flows into volume increase chamber via another interface of this switch valve, guarantees that its normal rotation operates.
When the rotation acceleration out of control of rotary member is rotated, the corresponding surge of rate-of flow then flowing into switch valve adds, under the pressure duty medium effect of instantaneous formation, make switch valve switch to cut-off state, forbid that working medium continues through, to limit relatively rotating of cylinder bar and cylinder barrel; That is, both are locked, thus form the driving torque of locking restriction rotary member, stop the improper rotation of rotary member.For the working bucket of altitude operation vehicle, when there is the problems such as chain drive-belt fracture when the arbitrary position operation aloft of its working bucket, working bucket reliably can be locked in this position by this self-locking device, prevents working bucket from occurring unexpected tumbling.On the basis of greatly improving overall operation Security, self-locking device of the present invention has the simple feature of structure, can evade the defect of existing increase chain dimension and installing space simultaneously.
The abnormal rotation that rotary member self-locking device provided by the invention can be applicable to any rotary member controls, and is specially adapted to working bucket and the jib annexation of altitude operation vehicle.
Accompanying drawing explanation
Fig. 1 illustrates the mounting point schematic diagram of rotary member self-locking device described in present embodiment;
Fig. 2 is the assembling explosive view of rotary member self-locking device described in the first example;
The assembly relation partial sectional view that Fig. 3 is the bar of cylinder shown in Fig. 2 and cylinder barrel;
Fig. 4 is I-I sectional view shown in Fig. 3;
Fig. 5 illustrates the principle schematic of rotary member self-locking device described in the first embodiment.
In figure:
Working bucket 1, rotating shaft 11, jib 2, sprocket wheel 3;
Rotary member self-locking device 4, cylinder bar 41, first protuberance 411, cylinder barrel 42, second protuberance 421, first through hole 422, second through hole 423, switch valve 43, elastic member 431.
Embodiment
Core of the present invention is to provide a kind of self-locking device being applicable to rotary member, to limit the improper rotation of rotary member relative to fixed component, is coordinated the hidden danger can evaded completely and rotate and control inefficacy and cause by the component of this self-locking device.Present embodiment is illustrated below in conjunction with Figure of description.
Without loss of generality, present embodiment is described in detail using the working bucket of altitude operation vehicle and jib as connecting object.Should be appreciated that the concrete Placement of this working bucket and jib does not form the restriction to the application's protection domain.
Please also refer to Fig. 1 and Fig. 2, wherein, Fig. 1 illustrates the mounting point schematic diagram of rotary member self-locking device described in present embodiment, Figure 2 shows that the assembling explosive view of rotary member self-locking device described in the first example.
As shown in Figure 1, working bucket 1 is hinged with jib 2, the rotating shaft 11 of this working bucket 1 is coaxially fixedly installed the driven sprocket 3 of chain drive, and chain drive can drive working bucket 1 to rotate relative to jib 2 as driving mechanism, thus the aerial statue reaching expection meets actual job demand.It should be noted that, self structure and the annexation thereof of working bucket 1 and jib 2 all based on existing techniques in realizing, can repeat no more herein.This programme unlike the prior art, is provided with rotary member self-locking device 4 between jib 2 and working bucket 1, and when there is the problems such as chain breakage when chain drive, this self-locking device 4 reliably can limit working bucket 1 and occur unexpected tumbling.
As shown in Figure 2, the rotary member self-locking device 4 that this programme provides, primarily of cylinder bar 41 and the cylinder barrel 42 of inside and outside nested setting, and the switch valve 43 be installed on outside this cylinder barrel 42 is formed; Cylinder bar 41 is coaxially fixed with the rotating shaft of working bucket 1, and correspondingly cylinder barrel 42 is fixedly connected with jib 2.Obviously, concrete Placement can adopt different structural type to realize, but not is confined to the end-face helical hole respectively by cylinder bar 41 and cylinder barrel 42 shown in figure, is reliably connected respectively with corresponding component to be connected by threaded fastener.In order to describe the concrete structure of cylinder bar 41 and cylinder barrel 42 in detail please also refer to Fig. 3 and Fig. 4, wherein, Fig. 3 is the assembly relation partial sectional view of cylinder bar and cylinder barrel described in the present embodiment, and Fig. 4 is I-I sectional view shown in Fig. 3.
Shown in figure, cylinder bar 41 has outward extending first protuberance 411, and forms first with the inwall of cylinder barrel 42 and to be rotatably assorted pair; Cylinder barrel 42 has the second protuberance 421 extended internally, and forms second to be rotatably assorted pair with the outer surface of cylinder bar 41.Here, the definition for benchmark carries out originally is stopped with cylinder bar 41 and cylinder barrel 42 self respectively by the noun of locality " interior " used, " outward ", be appreciated that the use of this noun of locality is only for clear concise and to the point description element structure, does not form the restriction of essence implication expressed by it.
Simultaneously, dielectric space circumference between cylinder bar 41 and cylinder barrel 42 is split the first chamber A and the second chamber B that form opposing seal by the first protuberance 411 and the second protuberance 421, when working bucket 1 is rotated, cylinder bar 41 and its synchronous axial system, and the volume of two chambers is changed when relatively rotating, one volume increases, the corresponding reduction of another one volume.Cylinder barrel 42 offers the first through hole 422 be communicated with the first chamber A, and the second through hole 423 to be communicated with the second chamber B, this first through hole 422 and the second through hole 423 respectively with switch valve 43 orifice of normal conduction, that is, working bucket 1 is under the drive of chain drive in normal rotation control procedure, volume reduces the switch valve 43 of working medium from an interface inflow normal conduction in chamber, and flows into volume increase chamber via another interface of this switch valve 43.This switch valve 43 also can switch to cut-off state according to the pressure medium of the first chamber A or the second chamber B, stops volume to reduce working medium in chamber and continues to flow into volume and increase chamber, to limit relatively rotating of cylinder bar 41 and cylinder barrel 42.
It should be noted that, the switch valve 43 of this programme can adopt an independent component, also can select the valve group of multiple element set according to actual requirement, as long as meet above-mentioned functions needs all in the scope of the application's request protection.Especially, this programme provides that a kind of structure is more simple, independent component implementation reliably, please composition graphs 5 in the lump, the figure shows the principle schematic of rotary member self-locking device described in the first embodiment.
Normal conduction switch valve 43 shown in Fig. 5, the pressure medium that its spool is known by elastic member 431 and control mouthfeel, switches between on state and cut-off state.Specifically, kept the normal conduction of two interface by elastic member 431, can obtain with the control mouth of two orifice the pressure medium realizing switching, to overcome the resistance of elastic member 431 and to switch to cut-off state.In addition, during in order to rotate acceleration out of control rotation in working bucket, this cut-off operation response is more timely and effective, the normal conduction relation of this switch valve 43 can set up a throttle, to set up rapidly pressure reduction switching to cut-off state in time, thus working bucket is locked in this position, prevent working bucket from occurring unexpected tumbling.
In addition, all reliably can keep at any design attitude in order to ensure working bucket 1, the interior side opening of the first through hole 422 and the second through hole 423, can lay respectively on the formation first chamber A of the second protuberance 421 and the surface of the second chamber B; That is, the interior side opening of the first through hole 422 is positioned at the surface of the formation first chamber A of the second protuberance 421, and the interior side opening of the second through hole 423 is positioned at the surface of the formation second chamber B of the second protuberance 421.Thus, Applicable scope can be increased to greatest extent.
Obviously, the opposing seal performance of the first chamber A and the second chamber B, directly affects the timely and effective property of this self-locking device response equally.First protuberance 411 and cylinder barrel 42 inwall form the first be rotatably assorted secondary and the second protuberance 421 and cylinder bar 41 outer surface and form second and to be rotatably assorted pair, are dynamic fit relation; Preferably, form first to be rotatably assorted on the first secondary protuberance 411 and to be provided with the first Sealing (not shown), form second to be rotatably assorted on the second secondary protuberance 421 and to be provided with the second Sealing (not shown), and arrange along cylinder bar and the axially even of cylinder barrel respectively, to set up described opposing seal, compared with the implementation being arranged on cylinder barrel 42 inwall or cylinder bar 41 outer surface with Sealing, this preferred version processing cost is lower.
On the basis of rotary member self-locking device described in the first embodiment, formation second embodiment can be changed further.Specifically, the main composition of the second embodiment and inner connecting way identical with the first embodiment, difference is only its cylinder bar 41 and cylinder barrel 42 and the adjustment of rotary member with fixed component annexation: cylinder bar 41 is fixedly connected with jib 2, and correspondingly cylinder barrel 42 is coaxially fixed with the rotating shaft of working bucket 1.
In first and second embodiment aforementioned, be all arranged at cylinder barrel 42 for the first through hole of connecting with switch valve and the second through hole.Based on the core design thought of the application, the change of the first through hole and the second through hole arrangement in fact can also be carried out on the basis of first and second embodiment: be arranged on (not shown) on cylinder bar 41.Specifically, be opened on cylinder bar 41 respectively with the first through hole of the first chamber and the second chamber and the second through hole, set up aforementioned annexation via cylinder bar 41 and switch valve 43.In addition, all reliably can keep at any design attitude in order to ensure working bucket 1, increase Applicable scope to greatest extent; Similarly, the interior side opening of the first through hole and the second through hole, lays respectively on the formation first chamber A of the first protuberance 411 and the surface of the second chamber B.Other are formed and annexation repeats no more.
Except rotary member self-locking device, the present invention also provides a kind of altitude operation vehicle of this self-locking device of application, this altitude operation vehicle has working bucket and controls the driving mechanism (chain drive) that rotates relative to jib of working bucket, as previously mentioned, the rotating shaft of working bucket is as the rotary member of this programme, and jib is as the fixed component of this programme.Especially, other functional parts such as running gear, electrical system, boom system of this altitude operation vehicle all can adopt existing techniques in realizing, repeat no more equally herein.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. rotary member self-locking device, is characterized in that, comprise cylinder bar and the cylinder barrel of inside and outside nested setting, the one in both is used for being fixedly connected with described rotary member, and another one is used for being fixedly connected with fixed component; Described cylinder bar has outward extending first protuberance, forms first to be rotatably assorted pair with the inwall of described cylinder barrel; Described cylinder barrel has the second protuberance extended internally, form second with the outer surface of described cylinder bar to be rotatably assorted pair, and the dielectric space circumference between described cylinder bar and cylinder barrel is split the first chamber and the second chamber that form opposing seal by described first protuberance and described second protuberance; Described cylinder barrel offers respectively with the first through hole and second through hole of described first chamber and the second chamber, described first through hole and the second through hole respectively with the switch valve orifice of normal conduction, described switch valve can switch to cut-off state according to the pressure medium of described first chamber or the second chamber, to limit relatively rotating of described cylinder bar and cylinder barrel.
2. rotary member self-locking device according to claim 1, is characterized in that, the interior side opening of described first through hole and the second through hole, lays respectively on described first chamber of formation of described second protuberance and the surface of the second chamber.
3. rotary member self-locking device according to claim 1 and 2, it is characterized in that, form described first to be rotatably assorted on secondary described first protuberance and to be provided with the first Sealing, form described second to be rotatably assorted on secondary described second protuberance and to be provided with the second Sealing, to set up described opposing seal.
4. rotary member self-locking device according to claim 3, it is characterized in that, the spool of described switch valve keeps the normal conduction of interface described in two by elastic member, and by obtaining described pressure medium with the control mouth of two described orifice, to overcome the resistance of described elastic member and to switch to described cut-off state.
5. rotary member self-locking device, is characterized in that, comprise cylinder bar and the cylinder barrel of inside and outside nested setting, the one in both is used for being fixedly connected with described rotary member, and another one is used for being fixedly connected with fixed component; Described cylinder bar has outward extending first protuberance, forms first to be rotatably assorted pair with the inwall of described cylinder barrel; Described cylinder barrel has the second protuberance extended internally, form second with the outer surface of described cylinder bar to be rotatably assorted pair, and the dielectric space circumference between described cylinder bar and cylinder barrel is split the first chamber and the second chamber that form opposing seal by described first protuberance and described second protuberance; Described cylinder bar offers respectively with the first through hole and second through hole of described first chamber and the second chamber, described first through hole and the second through hole respectively with the switch valve orifice of normal conduction, described switch valve can switch to cut-off state according to the pressure medium of described first chamber or the second chamber, to limit relatively rotating of described cylinder bar and cylinder barrel.
6. rotary member self-locking device according to claim 5, is characterized in that, the interior side opening of described first through hole and the second through hole, lays respectively on described first chamber of formation of described first protuberance and the surface of the second chamber.
7. the rotary member self-locking device according to claim 5 or 6, it is characterized in that, form described first to be rotatably assorted on secondary described first protuberance and to be provided with the first Sealing, form described second to be rotatably assorted on secondary described second protuberance and to be provided with the second Sealing, to set up described opposing seal.
8. rotary member self-locking device according to claim 7, it is characterized in that, the spool of described switch valve keeps the normal conduction of interface described in two by elastic member, and by obtaining described pressure medium with the control mouth of two described orifice, to overcome the resistance of described elastic member and to switch to described cut-off state.
9. an engineering machinery, comprises the rotary member rotated relative to fixed component; It is characterized in that, also comprise the rotary member self-locking device according to any one of claim 1 to 8.
10. engineering machinery according to claim 9, it is characterized in that, described engineering machinery is altitude operation vehicle, has working bucket and controls the driving mechanism that described working bucket rotates relative to jib, described rotary member is the rotating shaft of described working bucket, and described fixed component is described jib.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248313.4A CN103277405B (en) | 2013-06-20 | 2013-06-20 | Rotary member self-locking device and apply the engineering machinery of this self-locking device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310248313.4A CN103277405B (en) | 2013-06-20 | 2013-06-20 | Rotary member self-locking device and apply the engineering machinery of this self-locking device |
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| CN103277405A CN103277405A (en) | 2013-09-04 |
| CN103277405B true CN103277405B (en) | 2015-11-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403337A (en) * | 2001-09-07 | 2003-03-19 | 本田技研工业株式会社 | Steering damper for saddle type vehicle |
| CN102530785A (en) * | 2011-12-30 | 2012-07-04 | 大连益利亚工程机械有限公司 | Multifunctional fly jib device for high-altitude work vehicle |
| CN203335625U (en) * | 2013-06-20 | 2013-12-11 | 徐州重型机械有限公司 | Rotary component self-locking device and engineering machinery using self-locking device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3642356B2 (en) * | 1995-09-29 | 2005-04-27 | カヤバ工業株式会社 | Rotary damper |
| JP2002155925A (en) * | 2000-11-20 | 2002-05-31 | Fuji Seiki Co Ltd | Rotary movement support mechanism |
| JP2003222175A (en) * | 2002-01-29 | 2003-08-08 | Toyota Motor Corp | Rotary damper and rotary damper device |
| JP2006242253A (en) * | 2005-03-02 | 2006-09-14 | Fuji Latex Kk | Rotating damper device |
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2013
- 2013-06-20 CN CN201310248313.4A patent/CN103277405B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403337A (en) * | 2001-09-07 | 2003-03-19 | 本田技研工业株式会社 | Steering damper for saddle type vehicle |
| CN102530785A (en) * | 2011-12-30 | 2012-07-04 | 大连益利亚工程机械有限公司 | Multifunctional fly jib device for high-altitude work vehicle |
| CN203335625U (en) * | 2013-06-20 | 2013-12-11 | 徐州重型机械有限公司 | Rotary component self-locking device and engineering machinery using self-locking device |
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Effective date of registration: 20170213 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |