CN104332709A - Actuator replacement mechanism of radio telescope - Google Patents
Actuator replacement mechanism of radio telescope Download PDFInfo
- Publication number
- CN104332709A CN104332709A CN201410615337.3A CN201410615337A CN104332709A CN 104332709 A CN104332709 A CN 104332709A CN 201410615337 A CN201410615337 A CN 201410615337A CN 104332709 A CN104332709 A CN 104332709A
- Authority
- CN
- China
- Prior art keywords
- expansion link
- sleeve
- vertical guide
- guide rod
- flexible axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mechanical Control Devices (AREA)
Abstract
The invention discloses an actuator replacement mechanism of a radio telescope. The actuator replacement mechanism comprises a left pull rod assembly and a right pull rod assembly, the upper ends of the pull rod assemblies are connected with upper connecting rods and connected with lower stay cables via the upper connecting rods, the lower ends of the pull rod assemblies are connected with hydraulic cylinders respectively, and the hydraulic cylinders are connected with an actuator base. The pull rod assemblies are provided with sleeves, telescopic rods are arranged in the sleeves, the upper ends of the telescopic rods are connected with the upper connecting rods, the bodies of the telescopic rods are provided with a plurality of annular grooves circumferentially, and two locking mechanisms are oppositely arranged on outer sleeves of the sleeves, extend into the sleeves from shear keys and are matched with the annular grooves of the telescopic rods so as to limit the telescopic rods. The locking mechanisms are provided with flexible shafts to telescopically control the shear keys, and control handles of the flexible shafts are arranged near the lower ends of the sleeves.
Description
Technical field
The present invention relates to a kind of can control rod member axial slip or locked radio telescope actuator and change mechanism by far-end, when changeing large-scale radio astronomical telescope actuator, first by this mechanism to actuator unloaded.
Background technology
500m bore spherical radio telescope FAST(Five-hundred-meter Aperture Spherical radio Telescope) will be radio astronomical telescope maximum, the sensitiveest in the world.Utilize Karst Area of Guizhou low-lying area to cheat as platform location, in hole, low-lying area, lay 500m spherical crown shape reflecting surface, form parabola to converge electromagnetic wave by ACTIVE CONTROL, adopt light-duty cable wire to drag feed platform and realize telescopical sensing tracking.
When telescope is observed, actuator is adopted to drive downhaul mode to change reflecting surface elemental area type, to follow the tracks of celestial body.Actuator is mechanical, electrical, liquid integrated unit, and work in moist depression, the south of Guizhou Province, Guizhou, bear maximum 6 ~ 10 tons of pulling force varying load effects all the time, average speed is about 0.2mm/s, and quantity is 2225 covers.In 30 years telescope design life-spans, actuator breaks down unavoidably, and this will reduce telescopical service efficiency and surface precision.Meanwhile, actuator is distributed more widely, and depression is domatic rugged, precipitous, and is stopped by downhaul, actuator, base and earth anchor, and on-site maintenance condition is poor.
For large radio astronomical telescope maintenance problem, be necessary to design a kind of fault actuator fast dismantling converting mechanism, its designing requirement comprises: structure is simple, safe and reliable, lightweight, portable, changes fast and easy, exerts oneself large, can keep large load for a long time.
In Chinese utility model patent " a kind of large radio astronomical telescope downhaul drive unit quick-change mechanism " (patent No.: ZL201220060401.2), describe a kind of actuator change mechanism, this organization establishes has two pull bars in left and right, two pull bar tops overlap one " downhaul joint " and connect downhaul lower end, two pull bar bottom connecting fluid cylinder pressures respectively, the load of left and right hydraulic cylinder synchronous loading and transferable actuator.
During actuator contraction state, upper lower bearing pin centre-to-centre spacing is 1.8m, and stroke is 1.2m, and fault may occur in its any instant run, and therefore this changes mechanism and at least will meet adjustable in length within the scope of 1.8 ~ 3m.In former invention, pull bar is made up of upper and lower forward lead screw and intermediate sleeve, rotate intermediate sleeve towards different directions and can elongate or shorten pull bar, but be the large scale pull bar of 1.2m for variable quantity, this adjustment is very laboriously, and governing speed is comparatively slow, actuator changes object fast and is difficult to realize.Meanwhile, the maximum vertical angle of actuator axis about 56 °, part depression is domatic comparatively steep, and the vertical distance between downhaul lower end and ground will be greater than 3m, be difficult to touch former invention intermediate sleeve, be not easy to changeing of fault actuator.
Summary of the invention
For problems of the prior art, a kind of actuator of improvement is the object of the present invention is to provide to change mechanism, this changes the form that mechanism mainly adopts sleeve and expansion link, sleeve is arranged and can carry out locking position to expansion link by automatically reset locking mechanism, expansion link free-extension in sleeve during latch-up-free, locking mechanism can control by far-end, and governing speed is significantly accelerated, thus improve actuator change speed.
For achieving the above object, the present invention is by the following technical solutions:
The actuator of radio telescope changes mechanism, comprises the combination of left and right pull bar, and two pull bar combination upper ends connect a upper connecting rod, connect downhaul by described upper connecting rod, pull bar combination lower end connecting fluid cylinder pressure respectively, and hydraulic cylinder connects actuator base; Described pull bar combination is provided with sleeve, expansion link is provided with in sleeve, expansion link upper end connects described upper connecting rod, the body of rod of expansion link is circumferentially provided with several cannelures, sleeve outer cylinder body is relatively set with two groups of locking mechanisms, locking mechanism stretches out shear key in sleeve, coordinates with expansion link cannelure the position limiting expansion link; Locking mechanism is provided with the extension and contraction control that flexible axle carries out shear key, and the joystick of flexible axle is arranged on the lower end of described sleeve.
Further, described locking mechanism is provided with two moving leaders in right-angled intersection, comprise vertical guide rod and horizontal guide, two guide rods are provided with back-moving spring, and the axis of vertical guide rod is axially parallel with expansion link, and the axis of horizontal guide is axially vertical with expansion link, vertical guide rod drives horizontal guide, horizontal guide is connected and fixed described shear key towards one end of expansion link, and vertical guide rod is pulled by described flexible axle, controls described horizontal guide and stretches out towards expansion link or regain described shear key.
Further, described vertical guide rod is provided with skewed slot, described shear key is provided with the pulley coordinated with described skewed slot, vertical guide rod to horizontal guide be driven through described skewed slot and pulley carries out, when described flexible axle does not apply pulling force to vertical guide rod, vertical guide rod resets under the driving of reset itself spring, and then drives horizontal guide to move towards expansion link, stretches out described shear key and carries out spacing to expansion link; When described flexible axle applies pulling force to vertical guide rod, the restriction to horizontal guide decontroled by vertical guide rod, and described horizontal guide resets under the driving of reset itself spring, regains described shear key, and expansion link can be free to slide in sleeve.
Further, described vertical guide rod and horizontal guide are arranged in fairlead, and this fairlead is cubic shaped and inner hollow, and the base plate of fairlead is arc, and fairlead is fixed on described sleeve outer wall by described base plate; Or described sleeve upper end arranges a dismountable mount pad sleeve, mount pad sleeve be cubic shaped and inside with circular hole, the base plate of described fairlead is dull and stereotyped, and fairlead is fixed on the side of this mount pad sleeve by described base plate.
Further, described flexible axle is for transmitting axial linear movement, be made up of steel wire rope inner core, helical structure steel disc cover and outer on-metallic protective coating, near locking mechanism and joystick place, flexible axle bearing is being set respectively with fixing helical structure steel disc cover, this flexible axle bearing restriction helical structure steel disc is enclosed within the relative motion in axis of bending direction, steel wire rope inner core does relative motion in helical structure steel disc cover, thus realizes controlling the remote bending of described locking mechanism; Described flexible axle is close to described sleeve outer wall and is arranged between locking mechanism and joystick, and is fixed by clip.
Further, described joystick is fixed on described sleeve outer wall by positioning sleeve, positioning sleeve arranges bearing, bearing arranges rotating shaft, and the handle of assurance is arranged in rotating shaft, and this handle arranges flexible shaft end, flexible shaft end adjustable regular length thus command range of adjustable flexible shaft in handle, bearing is provided with upper and lower two stop bit counterbores, handle arranges alignment pin and coordinates with stop bit counterbore, and handle described locking mechanism when different stop bit counterbore is fixed completes stretching out or regaining shear key.
Further, described upper connecting rod comprises substrate, and arrange in the middle part of substrate and connect downhaul lower end in being inverted T-shaped main connecting hole, main connecting hole both sides respectively arrange a secondary connecting hole connection expansion link.
Further, the hole wall of described main connecting hole stretches out substrate upper and lower surface, arranges reinforcement, hole wall arranges opening between hole wall and substrate, A/F and downhaul diameter matches, and downhaul enters main connecting hole by this opening; The relatively described opening of substrate while the formation strengthening segment that stretches out.
Further, described secondary connecting hole is provided with keyway, and described expansion link upper end is provided with key, and expansion link is not rotatable after inserting secondary connecting hole, and expansion link upper end is also provided with pin, connecting rod downward slippage on expansion link in prevention.
Further, the sleeve outer wall of described pull bar combination arranges some minor axises, can set up cat ladder by minor axis.
The actuator adopting said structure to arrange changes mechanism, has the following advantages:
1. be convenient to install.
Installation process Ground Operation, without the need to aerial operation, critical piece all adopts aluminium alloy to make, lightweight.Installation process: 1. two lateral bracing struts are connected with upper connecting rod ground; 2. pull bar is utilized to lift connecting rod; 3. go up connecting rod opening and pass the less downhaul cable body of diameter; 4. firmly strain both sides pull bar downwards, pull bar coordinates with downhaul ground tackle, completes installation.
2. load safe and reliable.
After regulating left and right pull bar initial length, charger completes maximum 10 tons of load applyings.Load mode selection factor comprises:
1. load is comparatively large, and one-sided pull bar is 5 tons; 2. lightweight, portable; 3. arranged on left and right sides pull bar loads simultaneously, needs synchronous; 4. remote operation as far as possible, avoids having an accident; 5. technology maturation, hydraulic drive has that power-weight ratio is large, load is large, can far distance controlled, easily realize the advantages such as straight reciprocating motion.
3. pull bar ground regulates.
The designing requirement of adjustable length pull bar comprises: 1. actuator stroke 1.2m, and fault may occur in 0 ~ 1.2m any position, and this requires that left and right pull bar length 1.2m is adjustable; 2., after length adjustment, pull bar should reliably be locked; 3. because pull bar and upper connecting rod first hang on downhaul ground tackle, people should in surface controllable pull bar length adjustment or locking; 4. lightweight, portable.
4. change bearing pin cat ladder.
Axial distance between the connection bearing pin of actuator and downhaul and ground about 1.8 ~ 3m, after the unloading of fault actuator, staff must can touch this bearing pin, just can complete changeing.For this reason, utilize each welding 4 minor axises on the left of left lever, on the right side of right pull bar, aluminium ladder is stuck on minor axis, and by cat ladder, people can realize changeing of bearing pin.
Accompanying drawing explanation
Fig. 1 is using state figure of the present invention;
Fig. 2 is the front view of actuator base;
Fig. 3 uses by actuator the left view of bearing pin;
Fig. 4 uses by actuator the right view of bearing pin;
Fig. 5 adopts by the present invention the vertical view of upper connecting rod;
Fig. 6 adopts by the present invention the front view of upper connecting rod;
Fig. 7 adopts by the present invention the front view of outer cylinder body and locking mechanism;
Fig. 8 is the partial view of locking mechanism;
Fig. 9 adopts by the present invention the front view of expansion link;
Figure 10 is the assembled view of outer cylinder body and expansion link;
Figure 11-14 adopts by the present invention the topology view of joystick;
Figure 15 is the using state schematic diagram of actuator;
Figure 16 be the present invention and cat ladder with the use of schematic diagram.
In figure: 1. actuator; 2. go up connecting rod; 2-1. substrate; The main connecting hole of 2-2.; 2-3. reinforcement; The secondary connecting hole of 2-4.; 2-5. opening.
3. pull bar combination; 3-1. sleeve; 3-2. bearing; 3-3. horizontal guide; The vertical guide rod of 3-4.; 3-5. fairlead; 3-6. flexible axle; 3-7. joystick; 3-7-1. handle; 3-7-2. positioning sleeve; 3-7-3. stop bit counterbore; 3-7-4. connecting rod; 3-7-5. alignment pin; 3-8. connecting hole; 3-9. back-moving spring; 3-10. base plate; 3-11. shear key; 3-12. pulley; 3-13. positioning sleeve; 3-14. expansion link; 3-15. cannelure; 3-16. clip; 3-17. minor axis.
4. hydraulic cylinder; 5. base; 5-1. installing hole; 6. bearing pin; 7. bearing pin; 8. cat ladder.
Embodiment
For further setting forth the present invention for the technological means that reaches predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, structure of the present invention, feature and effect are described in detail as follows.
(1) mounting structure of actuator
Actuator described in the present invention, mount scheme as shown in Figure 1, is provided with base 5 below actuator 1, actuator 1 lower end is connected with base bearing pin 7, for change mechanism and be connected, base 5 adopts diplopore to design, install bearing pin 6 and bearing pin 7 respectively, this installation is near ground, and accessibility is good.
When changeing actuator, pull bar combination 3 is all set in actuator both sides, is divided into left and right pull bar to combine.Two pull bars combine 3 upper ends and connect a upper connecting rod 2, downhaul is connected by upper connecting rod 2, pull bar combines 3 lower ends connecting fluid cylinder pressure 4 respectively, hydraulic cylinder 4 lower end needs to be connected with bearing pin 6, the hydraulic stem upper end of hydraulic cylinder 4 arranges elliptical aperture, the connection of such convenience and pull bar combination 3, hydraulic cylinder 4 can coordinate hydraulic hand-pump to use.
Fault actuator changes job order: 1. assembly and replace mechanism, is connected with downhaul, base interface; 2. left and right synchronous fuel tank is adopted to load, transfer fault actuator load; 3. fault actuator upper pin, lower bearing pin is extracted successively; 4. oil cylinder pressurize, more renews actuator, plugs actuator lower bearing pin, upper pin successively; 5. actuator loads, and transfer changes mechanism's load; 6. change the connection of mechanism and downhaul, base interface, take away and change mechanism.
(2) structure of pull bar combination
The structure of pull bar combination 3 is as shown in Fig. 7,8,9,10, pull bar combination 3 is provided with sleeve 3-1, expansion link 3-14 is provided with in sleeve 3-1, expansion link 3-14 upper end connects upper connecting rod 2, the body of rod of expansion link 3-14 is circumferentially provided with several cannelures 3-15, sleeve 3-1 outer cylinder body is relatively set with two groups of locking mechanisms, locking mechanism stretches out shear key 3-11 in sleeve 3-1, coordinates with expansion link 3-14 cannelure the position limiting expansion link 3-14; Locking mechanism is provided with the extension and contraction control that flexible axle 3-6 carries out shear key 3-11, and the joystick 3-7 of flexible axle 3-6 is arranged on the lower end of sleeve 3-1.
The designing requirement of adjustable length pull bar combination comprises: 1. actuator stroke 1.2m, and fault may occur in 0 ~ 1.2m any position, and this requires that left and right pull bar pattern length 1.2m is adjustable; 2., after length adjustment, pull bar should reliably be locked; 3. because pull bar and upper connecting rod first hang on downhaul ground tackle, people should in surface controllable pull bar length adjustment or locking; 4. lightweight, portable.
Flexible axle 3-6 is for transmitting axial linear movement; be made up of steel wire rope inner core, helical structure steel disc cover (metal hose of helical structure) and outer on-metallic protective coating; near locking mechanism and joystick place, flexible axle bearing 3-2 is being set respectively with fixing helical structure steel disc cover; this flexible axle bearing 3-2 limits the relative motion that helical structure steel disc is enclosed within axis of bending direction; steel wire rope inner core does relative motion in helical structure steel disc cover, thus realizes controlling the remote bending of locking mechanism.
Bearing 3-2 arranges open-work, and steel wire rope inner core is through this open-work but helical structure steel disc overlaps and outer on-metallic protective coating is cut off, and bearing 3-2 forms transition to flexible axle and supports.For safety, flexible axle 3-6 is close to sleeve 3-1 outer wall and arranges between locking mechanism and joystick, and is fixed by clip 3-16.
Steel wire rope inner core comprises steel wire strand, and pulling force maximum is 150N, selects 6 × 7+IWS independent wire strand, Nominal Tensile 1470MPa, and diameter is 2mm, and minimum breaking force is 2.11kN.
(3) structure of locking mechanism
As shown in Figure 8, locking mechanism is provided with two moving leaders in right-angled intersection, comprise vertical guide rod 3-4 and horizontal guide 3-3, two guide rods are provided with back-moving spring 3-9, the axis of vertical guide rod 3-4 is axially parallel with expansion link 3-14, the axis of horizontal guide 3-3 is axially vertical with expansion link 3-14, vertical guide rod 3-4 drives horizontal guide, horizontal guide 3-3 is connected and fixed shear key 3-11 towards one end of expansion link 3-14, the two can adopt and be threaded, one end that shear key 3-11 contacts with expansion link 3-14 is necessary to be arranged to circular arc, vertical guide rod 3-4 is pulled by flexible axle 3-6, level of control guide rod 3-3 stretches out towards expansion link 3-14 or regains shear key 3-11.
Vertical guide rod 3-4 is provided with skewed slot, shear key 3-11 is provided with the pulley 3-12 coordinated with this skewed slot, vertical guide rod 3-4 to horizontal guide 3-3 be driven through skewed slot and pulley 3-12 carries out, when flexible axle 3-6 does not apply pulling force to vertical guide rod 3-4, vertical guide rod 3-4 resets under the driving of reset itself spring, and then drive horizontal guide 3-3 to move towards expansion link, stretching out shear key 3-11 carries out spacing to expansion link 3-14, and this is spacing is carry out after regulating the extension elongation of expansion link 3-14; When flexible axle 3-6 applies pulling force to vertical guide rod 3-4, vertical guide rod 3-4 decontrols the restriction to horizontal guide 3-3, horizontal guide 3-3 resets under the driving of reset itself spring, regain shear key 3-11, expansion link 3-14 can be free to slide in sleeve 3-1, is now the connection in order to decontrol downhaul.
According to load and deformation requirement, by optimal design, determine that the relevant parameters of back-moving spring 3-9 is as follows.
Uprighting spring: path d=3mm; Central diameter D=38mm; Material 65Mn; Spring free height H0=100mm; Pitch t=16.5mm; The maximum compressibility 81mm of spring: number of effective coils n=6; When load is 150N, amount of spring compression is 59mm; When load is 100N, amount of spring compression is 42mm.
Horizontal spring: path d=2.5mm; Central diameter D=32mm; Material 65Mn; Spring free height H0=40mm; Pitch t=14.7mm; The maximum compressibility 30.3mm of spring: number of effective coils n=2.5; When load is 100N, amount of spring compression is 21.2mm; When load is 50N, amount of spring compression is 10.5mm.
The maximum normal force Fnmax in inclined-plane occurs in the pine incipient stage, and size is Fsv/(μ sin θ+cos θ)=233N; A bearing can be adopted, Selection of Bearings deep groove ball bearing 619/4, its basic load rating Cr=0.95kN, C0r=0.35kN in pulley 3-12 reality.
Vertical guide rod 3-4 and horizontal guide 3-3 is arranged in fairlead 3-5, fairlead 3-5 is cubic shaped and inner hollow, aluminium alloy plate can be adopted to be welded, and fairlead 3-5 is fixed on sleeve 3-1 outer wall by base plate 3-10, and now base plate 3-10 can be designed to arc; Or, sleeve 3-1 upper end arranges a dismountable mount pad sleeve, mount pad sleeve be cubic shaped and inside with circular hole, a square tube can be adopted to make, now base plate 3-10 can be designed to flat board, is bolted on the side of this mount pad sleeve.Can be threaded connection with between mount pad sleeve and sleeve 3-1, setting is making and the assembling of conveniently locking mechanism like this.
(4) structure of joystick
As Figure 11, shown in 12, joystick 3-7 is fixed on sleeve 3-1 outer wall by positioning sleeve 3-7-2, positioning sleeve 3-7-2 can be designed to arc, positioning sleeve 3-7-2 arranges bearing, bearing arranges rotating shaft, the handle 3-7-1 held is arranged in rotating shaft, this handle 3-7-1 arranges flexible shaft end, namely the connecting rod 3-7-4 be threaded with handle 3-7-1, flexible axle 3-6 is connected with connecting rod 3-7-4, connecting rod 3-7-4 adjustable regular length thus command range of adjustable flexible shaft 3-6 in handle 3-7-1, be arranged in order to when assembling pull bar and combining 3 like this, locking mechanism can effectively be worked.
Bearing is provided with upper and lower two stop bit counterbore 3-7-3, handle 3-7-1 to arrange alignment pin 3-7-5 and coordinate with stop bit counterbore 3-7-3, handle 3-7-1 described locking mechanism when different stop bit counterbore 3-7-3 fixes completes stretching out or regaining shear key.
As shown in Figure 13,14, handle 3-7-1 rotation ± 90 ° can realize flexible axle 3-6 and stretch and contracting.Alignment pin 3-7-5 machined two semicircle conduits, the ball engagement that can compress with handle 3-7-1 upper spring, realizes the function preventing alignment pin 3-7-5 from coming off and reliably locking.
(5) structure of upper connecting rod
As shown in Figure 5,6, upper connecting rod 2 comprises substrate 2-1, and arrange in the middle part of substrate 2-1 and connect downhaul lower end in being inverted T-shaped main connecting hole 2-2, main connecting hole 2-2 both sides respectively arrange a secondary connecting hole 2-4 connection expansion link 3-14.
Secondary connecting hole 2-4 is provided with keyway, and expansion link 3-14 upper end is provided with key, and as shown in Figure 1, expansion link 3-14 is not rotatable after inserting secondary connecting hole 2-4, and expansion link 3-14 upper end is also provided with pin, connecting rod 2 downward slippage on expansion link 3-14 in prevention.Expansion link 3-14 upper end is threaded, namely uses nut check after inserting secondary connecting hole 2-4, and by the restriction up and down of nut and pin, the upper position of connecting rod 2 on expansion link 3-14 is also fixed, thus pull bar combination in left and right is firmly coupled together.
The hole wall of main connecting hole 2-2 stretches out substrate 2-1 upper and lower surface, arranges reinforcement 2-3 between hole wall and substrate 2-1.For fast, facilitate installation to change mechanism, going up connecting rod 2 is as shown in Figure 5 opening non-close C type structure, and installation process Ground Operation, without the need to aerial operation.The A/F that hole wall is arranged and downhaul diameter matches, downhaul enters main connecting hole 2-2 by this opening.But the structural strength that opening can reduce substrate 2-1 is set, so the formation strengthening segment that stretches out of substrate 2-1 opposed open, as in Fig. 5 in trapezoidal widened section.
Upper connecting rod 2 material is 40Cr, is welded.This structure is the guarantee be connected fast with downhaul, and its design focal point is the stress of Open architecture under large load, distortion and quality.
(6) with the coordinated scheme of cat ladder
The sleeve 3-1 outer wall of pull bar combination 3 arranges some minor axis 3-17, can set up cat ladder by minor axis 3-17.Axial distance between the connection bearing pin of actuator and downhaul and ground about 1.8 ~ 3m, after the unloading of fault actuator, staff must can touch this bearing pin, just can complete changeing.For this reason, utilize left lever to combine left side, each welding in right pull bar combination right side 4 minor axises, as shown in Figure 16, aluminium ladder is stuck on minor axis, and by cat ladder, people can realize changeing of bearing pin.
(7) the mechanics design of mechanism is changed
After FAST telescope builds up, the necessary condition that fast dismantling converting mechanism will be actuator operation maintenance.Be convenient to install, load safe and reliable, that pull bar ground regulates, changes bearing pin cat ladder designing points based on interface, its key technology analyzed:
(1) Finite Element Method is utilized, analyze connecting rod in opening non-close C type and bear the most unfavorable processing condition of axial load and lateral load, result shows: maximum stress 329MPa, maximum distortion 0.423mm, and upper connecting rod can not lose efficacy because of opening expansion, met its instructions for use.Through lightweight analysis, quality alleviates for original structure 91%;
(2) based on mechanical analysis, suppose that uprighting spring distortion 17mm load variations is 10-15kg, calculate horizontal spring distortion 10mm load variations and can be 10-5kg, then smooth-going, flexible controlled, the reliable lock of shear key motion.
The design set forth in the present invention, analytical mathematics and computational methods can be used for the development of follow-up FAST fault actuator fast dismantling converting mechanism physical prototyping, also have reference to similar the changeing of heavy charger of solution.
Described just in order to the present invention is described above, be construed as the present invention and be not limited to above embodiment, meet the various variants of inventive concept all within protection scope of the present invention.
Claims (10)
1. radio telescope actuator changes mechanism, comprises the combination of left and right pull bar, and two pull bar combination upper ends connect a upper connecting rod, connect downhaul by described upper connecting rod, pull bar combination lower end connecting fluid cylinder pressure respectively, and hydraulic cylinder connects actuator base; It is characterized in that, described pull bar combination is provided with sleeve, expansion link is provided with in sleeve, expansion link upper end connects described upper connecting rod, the body of rod of expansion link is circumferentially provided with several cannelures, sleeve outer cylinder body is relatively set with two groups of locking mechanisms, locking mechanism stretches out shear key in sleeve, coordinates with expansion link cannelure the position limiting expansion link; Locking mechanism is provided with the extension and contraction control that flexible axle carries out shear key, and the joystick of flexible axle is arranged on the lower end of described sleeve.
2. change mechanism as claimed in claim 1, it is characterized in that, described locking mechanism is provided with two moving leaders in right-angled intersection, comprise vertical guide rod and horizontal guide, two guide rods are provided with back-moving spring, the axis of vertical guide rod is axially parallel with expansion link, the axis of horizontal guide is axially vertical with expansion link, vertical guide rod drives horizontal guide, horizontal guide is connected and fixed described shear key towards one end of expansion link, vertical guide rod is pulled by described flexible axle, controls described horizontal guide and stretches out towards expansion link or regain described shear key.
3. change mechanism as claimed in claim 2, it is characterized in that, described vertical guide rod is provided with skewed slot, described shear key is provided with the pulley coordinated with described skewed slot, vertical guide rod to horizontal guide be driven through described skewed slot and pulley carries out, when described flexible axle does not apply pulling force to vertical guide rod, vertical guide rod resets under the driving of reset itself spring, and then drive horizontal guide to move towards expansion link, stretch out described shear key and carry out spacing to expansion link; When described flexible axle applies pulling force to vertical guide rod, the restriction to horizontal guide decontroled by vertical guide rod, and described horizontal guide resets under the driving of reset itself spring, regains described shear key, and expansion link can be free to slide in sleeve.
4. change mechanism as claimed in claim 2, it is characterized in that, described vertical guide rod and horizontal guide are arranged in fairlead, and this fairlead is cubic shaped and inner hollow, the base plate of fairlead is arc, and fairlead is fixed on described sleeve outer wall by described base plate; Or described sleeve upper end arranges a dismountable mount pad sleeve, mount pad sleeve be cubic shaped and inside with circular hole, the base plate of described fairlead is dull and stereotyped, and fairlead is fixed on the side of this mount pad sleeve by described base plate.
5. change mechanism as claimed in claim 1, it is characterized in that, described flexible axle is for transmitting axial linear movement, be made up of steel wire rope inner core, helical structure steel disc cover and outer on-metallic protective coating, near locking mechanism and joystick place, flexible axle bearing is being set respectively with fixing helical structure steel disc cover, this flexible axle bearing restriction helical structure steel disc is enclosed within the relative motion in axis of bending direction, steel wire rope inner core does relative motion in helical structure steel disc cover, thus realizes controlling the remote bending of described locking mechanism; Described flexible axle is close to described sleeve outer wall and is arranged between locking mechanism and joystick, and is fixed by clip.
6. change mechanism as claimed in claim 1, it is characterized in that, described joystick is fixed on described sleeve outer wall by positioning sleeve, positioning sleeve arranges bearing, bearing arranges rotating shaft, the handle held is arranged in rotating shaft, this handle arranges flexible shaft end, flexible shaft end adjustable regular length thus command range of adjustable flexible shaft in handle, bearing is provided with upper and lower two stop bit counterbores, handle arranges alignment pin and coordinates with stop bit counterbore, and handle described locking mechanism when different stop bit counterbore is fixed completes stretching out or regaining shear key.
7. change mechanism as claimed in claim 1, it is characterized in that, described upper connecting rod comprises substrate, and arrange in the middle part of substrate and connect downhaul lower end in being inverted T-shaped main connecting hole, main connecting hole both sides respectively arrange a secondary connecting hole connection expansion link.
8. change mechanism as claimed in claim 7, it is characterized in that, the hole wall of described main connecting hole stretches out substrate upper and lower surface, between hole wall and substrate, reinforcement is set, hole wall arranges opening, A/F and downhaul diameter matches, downhaul enters main connecting hole by this opening; The relatively described opening of substrate while the formation strengthening segment that stretches out.
9. change mechanism as claimed in claim 7, it is characterized in that, described secondary connecting hole is provided with keyway, described expansion link upper end is provided with key, expansion link is not rotatable after inserting secondary connecting hole, and expansion link upper end is also provided with pin, connecting rod downward slippage on expansion link in prevention.
10. change mechanism as claimed in claim 1, it is characterized in that, the sleeve outer wall of described pull bar combination arranges some minor axises, can set up cat ladder by minor axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615337.3A CN104332709B (en) | 2014-11-05 | 2014-11-05 | Actuator replacement mechanism of radio telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615337.3A CN104332709B (en) | 2014-11-05 | 2014-11-05 | Actuator replacement mechanism of radio telescope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104332709A true CN104332709A (en) | 2015-02-04 |
| CN104332709B CN104332709B (en) | 2017-01-11 |
Family
ID=52407392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410615337.3A Expired - Fee Related CN104332709B (en) | 2014-11-05 | 2014-11-05 | Actuator replacement mechanism of radio telescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104332709B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111611657A (en) * | 2020-05-18 | 2020-09-01 | 中国科学院国家天文台 | FAST reflecting surface unit self-adaptive connecting mechanism fault analysis and judgment method |
| CN113458744A (en) * | 2021-06-21 | 2021-10-01 | 国网安徽省电力有限公司 | Sleeve auxiliary replacement box and maintenance robot applying same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010112111A1 (en) * | 2009-04-01 | 2010-10-07 | Hydac Electronic Gmbh | Electromagnetic actuator |
| CN103777343A (en) * | 2014-01-27 | 2014-05-07 | 中国科学院国家天文台南京天文光学技术研究所 | Permanent magnet type force actuator for active supporting of telescope surface of astronomical telescope |
| CN103986299A (en) * | 2014-05-04 | 2014-08-13 | 中国科学院长春光学精密机械与物理研究所 | Extrusion type magneto-rheological elastomer force actuator |
-
2014
- 2014-11-05 CN CN201410615337.3A patent/CN104332709B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010112111A1 (en) * | 2009-04-01 | 2010-10-07 | Hydac Electronic Gmbh | Electromagnetic actuator |
| CN103777343A (en) * | 2014-01-27 | 2014-05-07 | 中国科学院国家天文台南京天文光学技术研究所 | Permanent magnet type force actuator for active supporting of telescope surface of astronomical telescope |
| CN103986299A (en) * | 2014-05-04 | 2014-08-13 | 中国科学院长春光学精密机械与物理研究所 | Extrusion type magneto-rheological elastomer force actuator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111611657A (en) * | 2020-05-18 | 2020-09-01 | 中国科学院国家天文台 | FAST reflecting surface unit self-adaptive connecting mechanism fault analysis and judgment method |
| CN111611657B (en) * | 2020-05-18 | 2024-02-06 | 中国科学院国家天文台 | Fault analysis and judgment method for FAST reflecting surface unit self-adaptive connecting mechanism |
| CN113458744A (en) * | 2021-06-21 | 2021-10-01 | 国网安徽省电力有限公司 | Sleeve auxiliary replacement box and maintenance robot applying same |
| CN113458744B (en) * | 2021-06-21 | 2024-05-31 | 国网安徽省电力有限公司 | Auxiliary sleeve replacement box and overhaul robot applying auxiliary sleeve replacement box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104332709B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204205376U (en) | A kind of novel fiber-reinforced type inspection platform | |
| CN109162205B (en) | Arch rib folding section mounting structure and mounting method | |
| CN102645438A (en) | Movable automatic horizontal positioning detection arm for tunnel | |
| CN104332709B (en) | Actuator replacement mechanism of radio telescope | |
| CN103711986A (en) | Pushing system and method for factory method segment prefabrication construction | |
| CN104109998A (en) | Intelligent tensioning equipment for integral stay cables | |
| CN105818016A (en) | Maintenance tool for large water guide mechanism straight cylinder servomotor of hydraulic turbine generator unit | |
| CN103187696A (en) | Wire grip for electrification working on power transmission line | |
| CN205591632U (en) | Pole setting device | |
| CN101264855B (en) | Inclined guy cable stretching torsion-proof jack | |
| CN107651114B (en) | Horizontal tensioning fixing device | |
| CN203769738U (en) | Suspension point movable type pumping unit | |
| CN203495859U (en) | Puller | |
| CN102328197A (en) | Hydraulic automatic pin pulling device | |
| CN202390145U (en) | Fixing tool for assembling jacking frame cylinder of steel ladle of refining furnace | |
| CN103692192A (en) | Bidirectional hydraulic pushing assembly device for large pins | |
| CN206233672U (en) | A kind of flexible overturn-preventing system of single-pipe tower socket | |
| CN205590168U (en) | Overturning lifting device | |
| CN214780384U (en) | Tower crane super-long-distance wall-attached device | |
| CN205630398U (en) | A examine and repair frock that is used for large -scale water distributor straight -cylinder servomotor of hydroelectric set | |
| CN103147412A (en) | Carbon-fiber-reinforcement external pre-stressing tension anchor device and anchoring method | |
| CN204591178U (en) | A kind of column moment adaptive equalization mechanism | |
| CN204023542U (en) | Vertical ship lift counterweight block connecting steel wire ropes stretching adjusting device | |
| CN205012970U (en) | Anvil worker binding clip levelling mechanism | |
| CN210404678U (en) | Be used for prosthetic cable protective structure of municipal drainage pipe non-excavation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20171105 |