CN104832495A - Suspension cylinder and crane - Google Patents
Suspension cylinder and crane Download PDFInfo
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- CN104832495A CN104832495A CN201510145187.9A CN201510145187A CN104832495A CN 104832495 A CN104832495 A CN 104832495A CN 201510145187 A CN201510145187 A CN 201510145187A CN 104832495 A CN104832495 A CN 104832495A
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- Prior art keywords
- oil cylinder
- cylinder barrel
- piston rod
- hole
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2853—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using potentiometers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/265—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs hydraulic springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/06—Cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a suspension cylinder and a crane, relates to the technical field of engineering machinery, and solves the problem that in the prior art, the capability of a suspension cylinder for adapting to complex and severe conditions is poor. The suspension cylinder comprises a cylinder, a piston rod, a cylinder stroke detection apparatus and a vibration damping bearer, wherein one of the cylinder and the piston rod is connected with the vibration damping bearer, and the cylinder stroke detection apparatus comprises a movable body and a detection module. The detection module gives off corresponding cylinder displacement detection signals when the movable body and the detection module move relative to each other. Either the movable body or the detection module is fixedly connected with the cylinder, and the other one of the movable body and the detection module is fixedly connected with the piston rod. The crane employs the suspension cylinder provided in the invention. The capability of the suspension cylinder for adapting to complex and severe conditions is improved.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of hanging oil cylinder and the hoist of this hanging oil cylinder is set.
Background technique
The general name of element that suspension is all force transmission connections between vehicle frame (or monocoque body) with vehicle bridge (or wheel) and is connected, the main function of suspension transmits all force and moments acted between wheel and vehicle frame, and the impact produced when relaxing vehicle travels uneven road surface, the vibration (or being interpreted as vibrations) of the bearing system that decay causes thus, to ensure ride of vehicle.Suspension is primarily of compositions such as elastic element, vibration damper, guide mechanism and lateral stable pole.Suspension have independent suspension and rigid axle suspension point.Vehicle bridge is connected with vehicle frame (or monocoque body) by suspension, the device of two ends installing wheel.The function of vehicle frame mainly supports each component connecting automobile, bears the various load inside and outside from car.
Full Terrain Cranes is the High-Performance Hoist having truck crane and rough-terrain crane feature concurrently, and it is fast that it has travelling speed, the functions such as many bridge driving, all-wheel steering, grade ability are strong, adaptation complex road condition traveling.Full Terrain Cranes generally uses hydro-pneumatic suspension system.Hydro-pneumatic suspension system is using fluid transmission of pressure, by the suspension system of inert gas (being generally N2) as Elastic medium, it is made up of accumulator (being equivalent to spring) and the hanging oil cylinder with vibration damping vibration damper function, the spring element of conventional suspension systems and vibration damping vibration damper function is integrated in one.Compared with conventional suspension, oleo-pneumatic suspension has good nonlinear stiffness characteristic and nonlinear dampling characteristic, can meet the smoothness requirement of vehicle to greatest extent.Full Terrain Cranes chassis suspension is generally divided into two kinds, and one is rigid axle suspension, and one is independent suspension.The feature of rigid axle suspension is that both sides wheel is arranged on SA, can directly have influence on opposite side wheel when single wheel is hit power.The feature of independent suspension is that both sides wheel is installed on broken bridge of car, and both sides wheel is separately connected with vehicle frame (or vehicle body) elasticity, and when single wheel is hit, its motion does not directly have influence on opposite side wheel.
Rigid axle suspension as shown in Figure 1, its feature is that both sides wheel is connected by SA, and vehicle bridge 12 is connected with vehicle frame 13 or vehicle body by suspension.If Uneven road in travelling, single wheel is elevated, and SA will force opposite side wheel to produce motion.
Independent suspension is relative to the difference of rigid axle suspension as shown in Figure 1 as shown in Figure 2: vehicle bridge is not overall, but is made up of with right half-bridge 24 two half-bridges and left half-bridge 22.Its feature is: vehicle bridge disconnects, and every single wheel is connected with vehicle frame 23 (or vehicle body) individually through suspension, and every single wheel can independently be beated.
Independent suspension is compared with rigid axle suspension as shown in Figure 2, and independent suspension advantage is:
1, motor can be made to lower installation, be conducive to the center of gravity reducing vehicle, make compact structure;
2, independent suspension allows front-wheel to have larger jitter space, is conducive to turning to, and is convenient to select soft spring element that smoothness is improved;
3, the non-spring of independent suspension carries, and quality is little, can improve the adhesive quality of wheel;
4, independent suspension can increase vehicle ground clearance, improves the cross-country passing capacity of vehicle.The defects such as certainly, independent suspension also also exists complex structure, and manufacture cost is high, maintenance service is difficult.
As shown in Figure 3 and Figure 4, binodal yoke independent suspension system is made up of two half-bridges, and each half-bridge is made up of two upper connecting rods 35 and two lower links 36, transmission shafts 38.Be differential mechanism 37 between two half-bridges, steering linkages 39 is connected with vehicle bridge 34.This suspension system uses common hanging oil cylinder, and this oil cylinder both can use in dependent suspension system, and also can use in independent suspension system, oil cylinder is generally made up of cylinder barrel, piston rod etc., and structural type is simple, and two ends all adopt hinged form.Because upper connecting rod 35, lower link 36 to play the effect of guide-localization for suspension system, oil cylinder adopts hinged form, and oil cylinder can be avoided to play guide-localization effect, makes cylinder force situation better.The existing upper connecting rod structure of binodal yoke independent suspension system, have lower pull rod structure again, whole system space is comparatively compact, and structure is comparatively complicated.The supreme bracing structure of some independent suspension system, only has lower pull rod structure, then oil cylinder need play certain guide-localization effect, can make more stable, the reliable vibration damping of suspension system.
Be illustrated in figure 5 in conventional suspension cylinder structure, the large chamber 9 of oil cylinder is connected with accumulator by center oil pipe 43, and loculus 46 is connected with accumulator with by damping hole 47, one-way valve 48 and shoe cream room 45.Piston rod 41 is fixed with outer layer protection shell 42.Piston rod 41 upper end and vehicle frame corresponding construction hinged, cylinder barrel 43 is hinged with vehicle frame corresponding construction.The effect of damping hole is vehicle frame when stretching relative to vehicle bridge, produces larger damping force, can play the effect of vibration damping.Vehicle frame is relative with vehicle bridge when compressing, shoe cream room fluid can enter loculus rapidly by damping hole 47 and one-way valve 48 simultaneously, when now the relative cylinder barrel of piston rod 41 moves, 42 are subject to less damping force, by the gas in large chamber 9 the fluid also connected accumulator of compression, now oil cylinder mainly plays elastic reaction, is equivalent to the spring of traditional suspension.
The applicant finds: prior art at least exists following technical problem:
In prior art, hanging oil cylinder is used in Non-separation suspension system and binodal yoke independent suspension system has the advantages such as stressing conditions is better, but there is following shortcoming:
1, oil cylinder two ends all adopt hinged mode, can not realize guide-localization function.The independent suspension system of guide-localization need be played for oil cylinder, generally can not use the oil cylinder of this structural type.
2, independent suspension two bridge separately, and one-sided impact is larger than rigid axle suspension, therefore proposes better requirement to the vibration damping (vibration damping also can be understood as damping) of oil cylinder, cushioning effect.The damping effect that this oil cylinder produces by means of only damping hole realizes damping effect, and vibration damping form is comparatively single.
3, prior art many employings proximity switch, only can carry out single-point detection, continuous detection can not be realized, accurately cannot detect the flexible stroke of hanging oil cylinder, and then accurately cannot control the flexible stroke of hanging oil cylinder, the travelling comfort of driver and reliability may be caused to experience bad;
Due to above-mentioned shortcoming, prior art is caused to exist the poor technical problem of adaptive capacity that is complicated, bad working environments.
Summary of the invention
One of them object of the present invention is the hoist proposing a kind of hanging oil cylinder and arrange this hanging oil cylinder, solves prior art and exists the poor technical problem of adaptive capacity that is complicated, bad working environments.Many technique effects that optimal technical scheme in many technological schemes provided by the invention can produce refer to hereafter sets forth.
For achieving the above object, the invention provides following technological scheme:
The hanging oil cylinder that the embodiment of the present invention provides, comprises cylinder barrel, piston rod, oil cylinder stroke detection device and vibration damping holder, described cylinder barrel and described piston rod one of them be connected with described vibration damping holder;
Described oil cylinder stroke detection device comprises testing module and moving body, and described testing module can send the oil cylinder displacement detection signal corresponding with the position of described moving body in real time in the process of described moving body to described testing module relative movement;
Described moving body and described both testing modules one of them be fixedly connected with described cylinder barrel, wherein another is fixedly connected with described piston rod for described moving body and described both testing modules.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described oil cylinder stroke detection device is magnetostrictive displacement sensor.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described oil cylinder stroke detection device is within described cylinder barrel and between described cylinder barrel and described piston rod.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, the outer surface of described cylinder barrel is provided with the first hydraulic fluid port and the second hydraulic fluid port, form the first chamber and the second chamber between described cylinder barrel and described piston rod, the hydraulic oil entered in described first chamber from described first hydraulic fluid port can drive described piston rod to stretch out; The hydraulic oil entered in described second chamber from described second hydraulic fluid port can drive described piston rod to retract;
Described cylinder barrel is provided with the first mounting hole be connected with described first chamber, described piston rod is provided with the second mounting hole be connected with described first chamber, described testing module is fixed in described first mounting hole, and described moving body is fixed in described second mounting hole.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described cylinder barrel is provided with the positioning screw hole be connected with described first mounting hole, and the positioning screwn be threaded with described screw and described testing module abut against and be locked in described first mounting hole by described testing module.
As the preferred orientation type of one, the present invention can adopt positioning screwn to realize the fixing of described testing module or described moving body, certainly, also can not use positioning screwn.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described testing module comprises test rod, described moving body is ring magnet, the oil pocket be communicated with described second mounting hole is provided with in described piston rod, described test rod runs through the center hole of described moving body and inserts in described oil pocket, and there is gap between the inwall of described test rod and described center hole.
Oil circuit between described second hydraulic fluid port and described second chamber is provided with at least one damping hole and/or at least one one-way valve.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described vibration damping holder comprises anti-lift-off, connecting base, cushion and ball socket bearing inner ring, wherein:
Described connecting base, described cushion and described ball socket bearing inner ring are provided with connecting through hole separately; The part that described anti-lift-off and described connecting base deviate from described cylinder barrel or described piston rod abut against and described anti-lift-off by Detachable connection structure and described cylinder barrel and described piston rod, one of them is connected;
In the radial direction, between the inwall of the connecting through hole on described connecting base and described ball socket bearing inner ring or described Detachable connection structure, there is gap in the connecting through hole on described connecting base; And/or in the radial direction, there is gap between described cushion and described ball socket bearing inner ring in the connecting through hole on described connecting base;
Described cushion between the part area and the part area of described ball socket bearing inner ring of described connecting base and described cushion be connected with the part area of described connecting base, the part area of described ball socket bearing inner ring respectively.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described anti-lift-off is connected with described cylinder barrel by described Detachable connection structure, described piston rod is also fixedly connected with outer protective shell, described outer protective valve jacket is located at outside described cylinder barrel, and described cylinder barrel can slide relative to described outer protective shell; Or,
Described anti-lift-off is connected with described piston rod by described Detachable connection structure, and described piston rod is fixedly connected with internal layer protecting crust, and described cylinder barrel is fixedly connected with outer protective shell; Described internal layer protecting crust is set in outside described cylinder barrel, and described cylinder barrel is between the piston of described internal layer protecting crust and described piston-rod end; Described outer protective valve jacket is located at outside described internal layer protecting crust, and described internal layer protecting crust can slide relative to described cylinder barrel and described outer protective shell.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described anti-lift-off is connected with described cylinder barrel by described Detachable connection structure, the first guide sleeve is provided with between the inwall of described outer protective shell and the outer wall of described cylinder barrel, described first guide sleeve is fixedly connected with described outer protective shell, and described first guide sleeve abuts against with the inwall of described outer protective shell and the outer wall of described cylinder barrel respectively;
The second guide sleeve is provided with between the inwall of described outer protective shell and described cylinder barrel outer wall and between the outer wall of described inner wall of cylinder and described piston rod, described second guide sleeve is fixedly connected with described cylinder barrel, and described second guide sleeve abuts against with the outer wall of described piston rod and the inwall of described outer protective shell respectively.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described anti-lift-off comprises end cap, described end cap is provided with mounting hole, and described Detachable connection structure is Anti-off bolt, and the helical thread portion of described Anti-off bolt runs through described mounting hole and is threaded with the screw on described cylinder barrel.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described ball socket bearing inner ring comprises base part, is arranged on the indent seam in described base part and is fixedly connected with or is the outer male half coupling of integral type structure with described base part, and the described connecting through hole on described ball socket bearing inner ring is formed jointly by the hole in described base part and described outer male half coupling;
Described outer male half coupling inserts the connecting through hole on described connecting base, and there is gap between described cushion between the inwall of connecting through hole on described outer male half coupling and described connecting base and described outer male half coupling;
Positioning convex on described cylinder barrel is embedded in described indent seam, and described positioning convex is provided with described screw.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described base part around described outer male half coupling is provided with outer convex globoidal, the inner side of described connecting base is provided with inner concave arc surface, the bi-side of described cushion at least respectively with described outer convex globoidal and described inner concave arc surface bonding.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, described cylinder barrel is also fixedly connected with thin plate, the axial direction of the maximum planes on described thin plate and described cylinder barrel is perpendicular.
The hoist that the embodiment of the present invention provides, comprises the hanging oil cylinder that the arbitrary technological scheme of vehicle frame, vehicle bridge, control system and the present invention provides, wherein:
Described vehicle frame and described vehicle bridge one of them be fixedly connected with described vibration damping holder, and one of them forms elasticity and is connected by described vibration damping holder and described cylinder barrel and described piston rod;
Described vehicle frame and described vehicle bridge wherein another and described cylinder barrel wherein another is fixedly connected with described piston rod;
The built-in described oil cylinder stroke detection device of described hanging oil cylinder, described oil cylinder displacement detection signal can be passed to described control system by described oil cylinder stroke detection device, described control system can receive described oil cylinder displacement detection signal and carry out respective handling, and can realize displacement detecting and the stroke control function of described hanging oil cylinder.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
In the hanging oil cylinder that the embodiment of the present invention provides, there is special vibration damping holder, it has vibration damping, the effect of buffering, and then make oil cylinder can carry out the swing of certain free angle, (in preferred version, the rubber pad of vibration damping holder can adopt special quality of rubber materials, there is good vibration damping, cushioning effect), the vibration damping holder design of uniqueness of the present invention can make oil cylinder have the swing of certain free angle, the effect of lateral force can be alleviated to a certain extent, oil cylinder is made to carry less lateral force, improve hanging oil cylinder thus further for complexity, the adaptive capacity of bad working environments, exist complexity so solve prior art, the technical problem that the adaptive capacity of bad working environments is poor.
Simultaneously, because it can detect the stroke of piston rod relative to cylinder tube in real time, the trip information can support that operator or control system control (such as: realize the accurate leveling of crane chassis, carry out suitable adjustment according to the flexible path increment of surface conditions to hanging oil cylinder of travel information reflection) hoist, thus improving the performance of the crane chassis that this hanging oil cylinder is set, hoist can also bring the experience such as the better travelling comfort of driver, reliability in the process of walking.
In addition, the optimal technical scheme of many technological schemes provided by the invention also tool have the following advantages:
1, containment vessel structural design
Suspension oil cylinder design protection shell structure, is connected with vehicle bridge and can plays guide-localization effect, can make independent suspension system designs simplification, be beneficial to the spatial arrangement etc. of other structures.Also oil cylinder internal structure can be protected from impacts such as outside dirts, also can strengthen oil cylinder anti-side load ability in addition.
2, sealing effect is better
Side is carried power and is had larger destructiveness for sealing.Hanging oil cylinder has outer layer protection shell structure, can strengthen oil cylinder anti-side load ability, and cylinder seal performance is highly improved, and the improvement of sealability improves the service behaviour of hanging oil cylinder, working life etc.
3, built-in sensors
Magnetic hysteresis telescopic displacement sensor is positioned at oil cylinder inside, adopts contactless method of measurement, does not produce friction and without wearing and tearing, reliability, stability are better, and displacement transducer precision can reach ± 0.1mm, and precision is higher, and can detect stroke in real time.Built-in flexible displacement transducer improves the adaptive capacity of hanging oil cylinder for bad working environments, further increases the usability of hoist.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of rigid axle suspension structure on hoist in prior art;
Fig. 2 is the schematic diagram of independent suspension structure on hoist in prior art;
Fig. 3 is the schematic front view of binodal yoke independent suspension system on hoist in prior art;
Fig. 4 is the schematic top plan view of binodal yoke independent suspension system on hoist in prior art;
Fig. 5 is the schematic diagram of hanging oil cylinder structure on hoist in prior art;
Fig. 6 is the cross-sectional schematic of a kind of hanging oil cylinder provided by the invention;
Fig. 7 is the cross-sectional schematic of Fig. 6 along A-A line;
Another schematic diagram that Fig. 8 is hanging oil cylinder shown in Fig. 6;
Fig. 9 is the cross-sectional schematic of another kind of hanging oil cylinder provided by the invention;
Another schematic diagram that Figure 10 is hanging oil cylinder shown in Fig. 9;
Reference character: 11, hanging oil cylinder; 12, vehicle bridge; 13, vehicle frame; 21, hanging oil cylinder; 22, left half-bridge; 23, vehicle frame; 24, right half-bridge; 31, erection support on oil cylinder; 32, suspension oil cylinder; 33, dust sealing; 34, vehicle bridge; 35, upper connecting rod; 36, lower link; 37, differential mechanism; 38, transmission shaft; 39, steering linkages; 41, piston rod; 42, outer layer protection shell; 43, center oil pipe; 44, cylinder barrel; 45, shoe cream room; 46, loculus; 47, damping hole; 48, one-way valve; 9, large chamber; 51, Anti-off bolt; 52, end cap; 53, connecting base; 54, cushion; 55, ball comparatively bearing inner race; 56, the second hydraulic fluid port; 57, the first guide sleeve; 58, outer layer protection shell; 59, cylinder barrel; 510, the second chamber; 511, the second guide sleeve; 512, piston rod; 513, the first hydraulic fluid port; 514, the first chamber; 515, piston; 516, thin plate; 61, outer layer protection shell; 62, internal layer containment vessel; 63, cylinder barrel; 64, piston rod; 65, piston; 7, oil cylinder stroke detection device (can be detecting sensor); 71, testing module; 72, moving body; 81, positioning screwn; 82, sensor wire outlet hole; 83, back-up ring; 91, loculus leads to oil circuit; 92, screw plug (or filter).
Embodiment
Content of the present invention and the distinctive points between the present invention and prior art can be understood below with reference to accompanying drawing Fig. 1 ~ Figure 10 and word content.Hereafter by accompanying drawing and the mode enumerating embodiment more of the present invention, technological scheme of the present invention (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristics in the present embodiment, any technological scheme is all one or more in the technical characteristics of plurality of optional or optional technological scheme, cannot exhaustive all alternative technical characteristicss of the present invention and alternative technological scheme in order to describe succinct to need in presents, also the mode of execution being not easy to each technical characteristics all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means provided by the invention can be carried out replacing or two or more technological means or technical characteristics arbitrarily provided by the invention being carried out mutually combining and obtain new technological scheme.Any technical characteristics in the present embodiment and any technological scheme all do not limit the scope of the invention, protection scope of the present invention should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art new technological scheme that two or more technological means or technical characteristics arbitrarily provided by the invention are carried out mutually combining and obtain.
Embodiments provide a kind of hanging oil cylinder stronger to adaptive capacity that is complicated, bad working environments and the hoist of this hanging oil cylinder is set.
Below in conjunction with the elaboration that Fig. 1 ~ Figure 10 carries out specifically to technological scheme provided by the invention.
Embodiment 1:
As shown in Fig. 6 ~ Fig. 7, the hanging oil cylinder that the embodiment of the present invention provides, comprise cylinder barrel 59, piston rod 512, oil cylinder stroke detection device 7 and vibration damping holder, cylinder barrel 59 and both piston rods 512 one of them form elasticity by vibration damping holder and outside connecting body and be connected;
Oil cylinder stroke detection device 7 comprises testing module 71 and moving body 72, and testing module 71 can send the oil cylinder displacement detection signal corresponding with the position of moving body 72 in real time in the process of moving body 72 to the relative movement of both testing modules 71;
Both moving body 72 and testing module 71 one of them (can be testing module 71) be fixedly connected with cylinder barrel 59, and wherein another is fixedly connected with piston rod 512 for both moving body 72 and testing module 71.
In the present invention in oil cylinder stroke detection device 7 moving body 72 (can be magnet) and testing module 71 (can be the sensor main body of magnetostrictive displacement sensor) in any case both relative movement, all the time there is gap between the two, owing to have employed contactless method of measurement, do not produce friction and wear, reliability and stability are good, because it can detect the stroke of piston rod 512 relative to cylinder tube 59 in real time, the trip information can support that operator or control system control (such as: the accurate leveling realizing crane chassis to hoist, surface conditions according to travel information reflection carries out suitable adjustment to hanging oil cylinder), thus improve the performance of the crane chassis that this hanging oil cylinder is set, adapt to complexity thus, the ability of severe operating mode is stronger, exist complexity so solve prior art, the technical problem that the adaptive capacity of bad working environments is poor, and, hoist can also bring driver better travelling comfort in the process of walking, the experience such as reliability.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, oil cylinder stroke detection device 7 is magnetostrictive displacement sensor (or be called: magnetic hysteresis telescopic displacement sensor), and moving body 72 is magnet.Above-mentioned oil cylinder stroke detection device 7 all can adopt contactless method of measurement to detect the stroke of piston rod 512 and cylinder tube 59 when guaranteeing testing precision, especially magnetostrictive displacement sensor, magnetostrictive displacement sensor can measure physical location by contactless position magnet, completely without wearing and tearing when thus working, absolute type working principle can guarantee reliable reading, by the movement of position magnet, can Crush trigger strain-pulse, this hyperacoustic working time can accurately obtain, and is compiled into the electronic output signal of standard.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, oil cylinder stroke detection device 7 is within cylinder barrel 59 and between cylinder barrel 59 and piston rod 512.Oil cylinder stroke detection device 7 is placed on hanging oil cylinder inside and outside can be avoided to collide with to cause oil cylinder stroke detection device 7 situations such as damage to occur, therefore improve the functional reliability of oil cylinder stroke detection device 7.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, outer surface outside cylinder barrel 59 is provided with the first hydraulic fluid port and the second hydraulic fluid port, form the first chamber and the second chamber between cylinder barrel 59 and piston rod 512, the hydraulic oil energy piston rod 512 entered in the first chamber from the first hydraulic fluid port is stretched out; The hydraulic oil energy piston rod 512 entered in the second chamber from the second hydraulic fluid port is retracted; Cylinder barrel 59 is provided with the first mounting hole be connected with the first chamber, piston rod 512 is provided with the second mounting hole be connected with the first chamber, testing module 71 is fixed in the first mounting hole, and moving body 72 is fixed in the second mounting hole.Above-mentioned design has the feasibility of processing, manufacture, assembling.
As the preferred orientation type of one, the present invention can adopt positioning screwn to realize the fixing of described testing module or described moving body, certainly, also can not use positioning screwn.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, cylinder barrel 59 is provided with the positioning screw hole be connected with the first mounting hole, the positioning screwn 81 and the testing module 71 that are threaded with screw abut against and testing module 71 are locked in installation cavity indoor.By screwing positioning screwn 81, utilize the abutting power of positioning screwn 81 testing module 71 can be locked in installation cavity indoor, unscrewing positioning screwn 81 can take out testing module 71.As the Alternate embodiments of the arbitrary technological scheme of the present invention, cylinder barrel 59 is provided with and the sensor wire outlet hole 82 installed chamber and be connected, the depth direction of sensor wire outlet hole 82 is consistent with the radial direction of cylinder barrel 59.Sensor wire outlet hole 82 can facilitate circuit to draw.Certainly, if be also provided with in cylinder barrel 59 to be electrically connected with testing module 71 and be the wireless signal transceiver of its output cylinder displacement detection signal time can omit circuit and sensor wire outlet hole.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, oil cylinder stroke detection device is magnetostrictive displacement sensor, testing module 71 comprises test rod, moving body 72 is ring magnet, the oil pocket be communicated with the second mounting hole is provided with in piston rod 512, test rod runs through the center hole of moving body 72 and inserts in oil pocket, and there is gap between test rod and the inwall of center hole.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, back-up ring 83 (back-up ring 83 and the second mounting hole are that interference fit is connected) can be set firmly in second mounting hole, back-up ring 83 can be utilized to be pressed on moving body 72 and be limited in the second mounting hole by moving body 72, test rod runs through back-up ring 83 and the respective center hole of moving body 72 and inserts in oil pocket.
Oil pocket can avoid test rod and piston rod 512 to collide, for the relative movement of test rod and ring magnet provides activity space.Back-up ring 83 pairs of moving bodys 72 can play effect that is spacing, that lock and protect.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, it (can be end cap 52 that vibration damping holder comprises anti-lift-off, the bottom surface of end cap 52 or side can also arrange or apply elastomeric layer, elastic material can adopt rubber), connecting base 53, cushion 54 (can be rubber pad, also can be called: pad) and ball socket bearing inner ring 55, wherein: connecting base 53 forms ball socket bearing outer ring.The end of piston rod 512 can arrange piston 515, and such as piston 515 can be arranged on the end of piston rod 512.
Connecting base 53, cushion 54 and ball socket bearing inner ring 55 are provided with connecting through hole separately.The part that anti-lift-off and connecting base 53 deviate from cylinder barrel 59 or piston rod 512 abuts against and anti-lift-off (can be end cap 52) is by Detachable connection structure (can be Anti-off bolt 51) that one of them is connected with cylinder barrel 59 and both piston rods 512.
Connecting through hole on connecting base 53 in the radial direction, gap is there is between the inwall of the connecting through hole on connecting base 53 and ball socket bearing inner ring 55 or Detachable connection structure, or, in the radial direction, between cushion 54 and ball socket bearing inner ring 55, there is gap in the connecting through hole on connecting base 53.Cushion 54 between the part area and the part area of ball socket bearing inner ring 55 of connecting base 53 and cushion 54 is connected with the part area of connecting base 53, the part area of ball socket bearing inner ring 55 respectively (can for bonding).
In the hanging oil cylinder that the embodiment of the present invention provides, there is special vibration damping holder, it has the effect of vibration damping, buffering, and then make oil cylinder can carry out the swing of certain free angle, (in preferred version, the rubber pad of vibration damping holder can adopt special quality of rubber materials, there is good vibration damping, cushioning effect), the vibration damping holder design of uniqueness of the present invention can alleviate the effect of lateral force to a certain extent, make oil cylinder carry less lateral force, improve hanging oil cylinder thus for adaptive capacity that is complicated, bad working environments.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, anti-lift-off (can be end cap 52) is connected with cylinder barrel 59 by Detachable connection structure, piston rod 512 is also fixedly connected with outer protective shell 58, outer protective shell 58 is set in outside cylinder barrel 59, and cylinder barrel 59 can slide relative to outer protective shell 58.
Suspension oil cylinder design protection shell structure, is connected with vehicle bridge and can plays guide-localization effect, can make independent suspension system designs simplification, be beneficial to the spatial arrangement etc. of other structures.Also oil cylinder internal structure can be protected from impacts such as outside dirts, also can strengthen oil cylinder anti-side load ability in addition.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, anti-lift-off (can be end cap 52) is connected with cylinder barrel 59 by Detachable connection structure, the first guide sleeve 57 is provided with between the inwall of outer protective shell 58 and the outer wall of cylinder barrel 59, first guide sleeve 57 is fixedly connected with outer protective shell 58, and the first guide sleeve 57 abuts against with the inwall of outer protective shell 58 and the outer wall of cylinder barrel 59 respectively.
The second guide sleeve 511 is provided with between the inwall of outer protective shell 58 and cylinder barrel 59 outer wall and between the outer wall of cylinder barrel 59 inwall and piston rod 512, second guide sleeve 511 is fixedly connected with cylinder barrel 59, and the second guide sleeve 511 abuts against with the outer wall of piston rod 512 and the inwall of outer protective shell 58 respectively.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, anti-lift-off comprises end cap 52, end cap 52 is provided with mounting hole, and Detachable connection structure is Anti-off bolt 51, the helical thread portion penetrating mounting holes of Anti-off bolt 51 and being threaded with the screw on cylinder barrel 59.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, ball socket bearing inner ring 55 comprises base part, is arranged on the indent seam in base part and is fixedly connected with or is the outer male half coupling of integral type structure with base part, and the connecting through hole on ball socket bearing inner ring 55 is formed jointly by the hole in base part and outer male half coupling.
Outer male half coupling inserts the connecting through hole on connecting base 53, and there is gap between described cushion 54 between the inwall of connecting through hole on outer male half coupling and connecting base 53 and outer male half coupling.
Positioning convex on cylinder barrel 59 is embedded in indent seam, and positioning convex is provided with screw.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, the base part around outer male half coupling is provided with outer convex globoidal, the inner side of connecting base 53 is provided with inner concave arc surface, the bi-side of cushion 54 respectively with outer convex globoidal and inner concave arc surface bonding.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, piston rod 512 is positioned on the outer surface outside cylinder barrel 59 or on the outer surface of cylinder barrel 59 and is provided with the first hydraulic fluid port 513 and the second hydraulic fluid port 56, (volume of the first chamber 514 can for being greater than the second chamber 510 to form the first chamber 514 and the second chamber 510 between cylinder barrel 59 and piston rod 512, so the first chamber 514 also can be called large chamber, first hydraulic fluid port 513 also can be called large chamber hydraulic fluid port, second chamber 510 also can be called loculus, and the second hydraulic fluid port 56 also can be called loculus hydraulic fluid port).
The hydraulic oil energy piston rod 512 entered in the first chamber 514 from the first hydraulic fluid port 513 is stretched out.The hydraulic oil energy piston rod 512 entered in the second chamber 510 from the second hydraulic fluid port 56 is retracted.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, the oil circuit (oil pipe and the first chamber 514 can be adopted to isolate) between the second hydraulic fluid port 56 and the second chamber 510 is provided with at least one damping hole (damping hole also can be the oil guiding hole for transmitting hydraulic oil) and/or at least one one-way valve.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, cylinder barrel 59 is also fixedly connected with thin plate 516, the axial direction of the maximum planes on thin plate 516 and cylinder barrel 59 is perpendicular.Thin plate 516 coordinates with vehicle frame corresponding construction, can prevent cylinder barrel 59 from rotating, and then prevents respective line from reversing and prevent Anti-off bolt 51 from loosening.
Embodiment 2:
As shown in Figure 8 and Figure 9, the present embodiment is substantially the same manner as Example 1, its difference is: anti-lift-off in the present embodiment (can be end cap 52) can pass through Detachable connection structure (can be with Anti-off bolt 51 structure is identical or close as shown in Figure 6) and be connected with piston rod 64, piston rod 64 is fixedly connected with internal layer protecting crust 62, and cylinder barrel 63 is fixedly connected with outer protective shell 61.Internal layer protecting crust 62 is set in outside cylinder barrel 63, and cylinder barrel 63 is between the piston 65 of internal layer protecting crust 62 and piston rod 64 end.Outer protective shell 61 is set in outside internal layer protecting crust 62, and internal layer protecting crust 62 can slide relative to cylinder barrel 63 and outer protective shell 61.
The hoist that the embodiment of the present invention provides, comprises the hanging oil cylinder that the arbitrary technological scheme of vehicle frame, vehicle bridge, control system and the present invention provides, wherein:
Outside connecting body for vehicle frame and vehicle bridge one of them, outside connecting body is fixedly connected with vibration damping holder, cylinder barrel and piston rod one of them form elasticity by vibration damping holder and outside connecting body and be connected;
Vehicle frame and vehicle bridge wherein another and cylinder barrel wherein another is fixedly connected with piston rod;
The built-in described oil cylinder stroke detection device 7 of described hanging oil cylinder, described oil cylinder displacement detection signal can be passed to described control system by described oil cylinder stroke detection device 7, described control system can receive described oil cylinder displacement detection signal and carry out respective handling, and can realize displacement detecting and the stroke control function of described hanging oil cylinder.
The mode hinged relative to the cylinder barrel of hanging oil cylinder in prior art and piston rod (or claiming oil cylinder two ends) and vehicle frame, vehicle bridge, the mode being fixedly connected with (such as bolt is connected) that the cylinder barrel of hanging oil cylinder of the present invention adopts with vehicle frame, vehicle bridge with piston rod, take full advantage of the elastic reaction of vibration damping holder, hanging oil cylinder is made to be provided with the swing of certain free angle, alleviate lateral force, there is certain guide-localization effect.
As the Alternate embodiments of the arbitrary technological scheme of the present invention, vehicle frame and vehicle bridge one of them (can be vehicle frame) be fixedly connected with the connecting base (can be flange arrangement) of hanging oil cylinder.
Anti-lift-off is connected with cylinder barrel by Detachable connection structure, vehicle frame and vehicle bridge (can be vehicle bridge) both wherein another with the piston rod of hanging oil cylinder or the structural member (can be outer protective shell 58) be fixedly connected with the piston rod of hanging oil cylinder be fixedly connected with.Or, anti-lift-off is connected with piston rod by Detachable connection structure (can for Anti-off bolt), and vehicle frame and vehicle bridge wherein another (can be vehicle bridge) and the cylinder barrel of hanging oil cylinder or the structural member (can be outer protective shell 61) that is fixedly connected with the piston rod of hanging oil cylinder be fixedly connected with.
Above-mentioned Placement has and connects advantage simply and easily.
Arbitrary technological scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values to illustrate technological scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to component, the implication that above-mentioned word is not special.
Simultaneously, if the invention described above discloses or relate to component or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use casting technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technological scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent constituent element, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope of request of the present invention protection.
Claims (15)
1. a hanging oil cylinder, is characterized in that, comprises cylinder barrel, piston rod, oil cylinder stroke detection device and vibration damping holder, described cylinder barrel and described piston rod one of them be connected with described vibration damping holder;
Described oil cylinder stroke detection device comprises testing module and moving body, and described testing module can send the oil cylinder displacement detection signal corresponding with the position of described moving body in real time in the process of described moving body to described testing module relative movement;
Described moving body and described both testing modules one of them be fixedly connected with described cylinder barrel, wherein another is fixedly connected with described piston rod for described moving body and described both testing modules.
2. hanging oil cylinder according to claim 1, is characterized in that, described oil cylinder stroke detection device is magnetostrictive displacement sensor.
3. hanging oil cylinder according to claim 1 and 2, is characterized in that, described oil cylinder stroke detection device is within described cylinder barrel and between described cylinder barrel and described piston rod.
4. hanging oil cylinder according to claim 2, it is characterized in that, the outer surface of described cylinder barrel is provided with the first hydraulic fluid port and the second hydraulic fluid port, form the first chamber and the second chamber between described cylinder barrel and described piston rod, the hydraulic oil entered in described first chamber from described first hydraulic fluid port can drive described piston rod to stretch out; The hydraulic oil entered in described second chamber from described second hydraulic fluid port can drive described piston rod to retract;
Described cylinder barrel is provided with the first mounting hole be connected with described first chamber, described piston rod is provided with the second mounting hole be connected with described first chamber, described testing module is fixed in described first mounting hole, and described moving body is fixed in described second mounting hole.
5. hanging oil cylinder according to claim 4, it is characterized in that, described cylinder barrel is provided with the positioning screw hole be connected with described first mounting hole, and the positioning screwn be threaded with described screw and described testing module abut against and be locked in described first mounting hole by described testing module.
6. hanging oil cylinder according to claim 4, it is characterized in that, described testing module comprises test rod, described moving body is ring magnet, the oil pocket be communicated with described second mounting hole is provided with in described piston rod, described test rod runs through the center hole of described moving body and inserts in described oil pocket, and there is gap between the inwall of described test rod and described center hole.
7. hanging oil cylinder according to claim 4, is characterized in that, the oil circuit between described second hydraulic fluid port and described second chamber is provided with at least one damping hole and/or at least one one-way valve.
8. hanging oil cylinder according to claim 1 and 2, is characterized in that, described vibration damping holder comprises anti-lift-off, connecting base, cushion and ball socket bearing inner ring, wherein:
Described connecting base, described cushion and described ball socket bearing inner ring are provided with connecting through hole separately; The part that described anti-lift-off and described connecting base deviate from described cylinder barrel or described piston rod abut against and described anti-lift-off by Detachable connection structure and described cylinder barrel and described piston rod, one of them is connected;
In the radial direction, between the inwall of the connecting through hole on described connecting base and described ball socket bearing inner ring or described Detachable connection structure, there is gap in the connecting through hole on described connecting base; And/or in the radial direction, there is gap between described cushion and described ball socket bearing inner ring in the connecting through hole on described connecting base;
Described cushion between the part area and the part area of described ball socket bearing inner ring of described connecting base and described cushion be connected with the part area of described connecting base, the part area of described ball socket bearing inner ring respectively.
9. hanging oil cylinder according to claim 8, it is characterized in that, described anti-lift-off is connected with described cylinder barrel by described Detachable connection structure, described piston rod is also fixedly connected with outer protective shell, described outer protective valve jacket is located at outside described cylinder barrel, and described cylinder barrel can slide relative to described outer protective shell; Or,
Described anti-lift-off is connected with described piston rod by described Detachable connection structure, and described piston rod is fixedly connected with internal layer protecting crust, and described cylinder barrel is fixedly connected with outer protective shell; Described internal layer protecting crust is set in outside described cylinder barrel, and described cylinder barrel is between the piston of described internal layer protecting crust and described piston-rod end; Described outer protective valve jacket is located at outside described internal layer protecting crust, and described internal layer protecting crust can slide relative to described cylinder barrel and described outer protective shell.
10. hanging oil cylinder according to claim 9, it is characterized in that, described anti-lift-off is connected with described cylinder barrel by described Detachable connection structure, the first guide sleeve is provided with between the inwall of described outer protective shell and the outer wall of described cylinder barrel, described first guide sleeve is fixedly connected with described outer protective shell, and described first guide sleeve abuts against with the inwall of described outer protective shell and the outer wall of described cylinder barrel respectively;
The second guide sleeve is provided with between the inwall of described outer protective shell and described cylinder barrel outer wall and between the outer wall of described inner wall of cylinder and described piston rod, described second guide sleeve is fixedly connected with described cylinder barrel, and described second guide sleeve abuts against with the outer wall of described piston rod and the inwall of described outer protective shell respectively.
11. hanging oil cylinder according to claim 8, it is characterized in that, described anti-lift-off comprises end cap, and described end cap is provided with mounting hole, described Detachable connection structure is Anti-off bolt, and the helical thread portion of described Anti-off bolt runs through described mounting hole and is threaded with the screw on described cylinder barrel.
12. hanging oil cylinder according to claim 11, it is characterized in that, described ball socket bearing inner ring comprises base part, is arranged on the indent seam in described base part and is fixedly connected with or is the outer male half coupling of integral type structure with described base part, and the described connecting through hole on described ball socket bearing inner ring is formed jointly by the hole in described base part and described outer male half coupling;
Described outer male half coupling inserts the connecting through hole on described connecting base, and there is gap between described cushion between the inwall of connecting through hole on described outer male half coupling and described connecting base and described outer male half coupling;
Positioning convex on described cylinder barrel is embedded in described indent seam, and described positioning convex is provided with described screw.
13. hanging oil cylinder according to claim 12, it is characterized in that, described base part around described outer male half coupling is provided with outer convex globoidal, the inner side of described connecting base is provided with inner concave arc surface, the bi-side of described cushion at least respectively with described outer convex globoidal and described inner concave arc surface bonding.
14. hanging oil cylinder according to claim 1 and 2, is characterized in that, described cylinder barrel is also fixedly connected with thin plate, and the axial direction of the maximum planes on described thin plate and described cylinder barrel is perpendicular.
15. 1 kinds of hoists, is characterized in that, comprise the arbitrary described hanging oil cylinder of vehicle frame, vehicle bridge, control system and claim 1-14, wherein:
Described vehicle frame and described vehicle bridge one of them be fixedly connected with described vibration damping holder, and one of them forms elasticity and is connected by described vibration damping holder and described cylinder barrel and described piston rod;
Described vehicle frame and described vehicle bridge wherein another and described cylinder barrel wherein another is fixedly connected with described piston rod;
The built-in described oil cylinder stroke detection device of described hanging oil cylinder, described oil cylinder displacement detection signal can be passed to described control system by described oil cylinder stroke detection device, described control system can receive described oil cylinder displacement detection signal and carry out respective handling, and can realize displacement detecting and the stroke control function of described hanging oil cylinder.
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| CN201510145187.9A CN104832495B (en) | 2015-03-31 | 2015-03-31 | Hanging oil cylinder and crane |
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| CN201510145187.9A CN104832495B (en) | 2015-03-31 | 2015-03-31 | Hanging oil cylinder and crane |
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| CN110905885A (en) * | 2019-12-16 | 2020-03-24 | 广东志成电液科技有限公司 | Inverted hydraulic cylinder with built-in displacement sensor and hydraulic mechanism |
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