CN106185652A - A kind of multi-stage expansion mechanism and engineering machinery - Google Patents

A kind of multi-stage expansion mechanism and engineering machinery Download PDF

Info

Publication number
CN106185652A
CN106185652A CN201610797904.0A CN201610797904A CN106185652A CN 106185652 A CN106185652 A CN 106185652A CN 201610797904 A CN201610797904 A CN 201610797904A CN 106185652 A CN106185652 A CN 106185652A
Authority
CN
China
Prior art keywords
arm
telescopic
driving
telescopic arm
lock pin
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.)
Pending
Application number
CN201610797904.0A
Other languages
Chinese (zh)
Inventor
韩润录
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beiqi Foton Motor Co Ltd
Original Assignee
Beiqi Foton Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beiqi Foton Motor Co Ltd filed Critical Beiqi Foton Motor Co Ltd
Priority to CN201610797904.0A priority Critical patent/CN106185652A/en
Publication of CN106185652A publication Critical patent/CN106185652A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04Devices for both conveying and distributing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B7/00Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10Telescoping systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00Cranes
    • B66C2700/03Cranes with arms or jibs; Multiple cranes

Abstract

The invention discloses a kind of multi-stage expansion mechanism and engineering machinery.Described multi-stage expansion mechanism includes: basic arm;At least two telescopic arm, its telescopically nested setting, and described at least two telescopic arm are telescopically arranged in described basic arm;And driving means, it is used for driving described telescopic arm to do stretching motion relative to described basic arm, and wherein, described driving means is arranged on outside described telescopic arm.In the multi-stage expansion mechanism of invention, for driving described telescopic arm to do the driving means of stretching motion relative to described basic arm, it is arranged on the outside of basic arm.Thus, it is to avoid arrange in arm that telescoping mechanism takes up room big shortcoming, and there is manufacture and the advantage such as easy to maintenance.

Description

A kind of multi-stage expansion mechanism and engineering machinery
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of multi-stage expansion mechanism and engineering machinery.
Background technology
Telescoping mechanism is the common mechanism in the such as engineering machinery such as crane, concrete mixer.In the prior art, flexible Mechanism is generally divided into three kinds: independent oil cylinder telescoping mechanism, row's rope telescoping mechanism and automatic pinning formula telescoping mechanism.
The feature of independent oil cylinder telescoping mechanism is that telescopic arm is the same with the quantity of oil cylinder, and the joint number of arm can not be too many, flexible It is big that mechanism takies area of section, Heavy Weight (relative to the weight of arm assembly), and the quantity of general telescopic arm is less than 3 joints.
The feature of row's rope telescoping mechanism is within the joint number of arm typically can only accomplish 5 joints, telescoping mechanism from great (relative to The weight of arm assembly).
Automatic pinning formula telescoping mechanism has the disadvantages that 1, telescoping mechanism is arranged in arm, and the volume taken is relatively big, arm Cross section is big, and arm overall weight is heavier;2, at overlength arm joint number, load-carrying requires that in relatively small structure, arm is bulky, should Structure is inapplicable;3, requiring that structure precision is high, high to manufacture requirements, break down maintenance inconvenience.
Thus, it is desirable to have a kind of technical scheme overcomes or at least alleviates at least in the drawbacks described above of prior art Individual.
Summary of the invention
It is an object of the invention to provide a kind of technical scheme overcome or at least alleviate in the drawbacks described above of prior art At least one.
For achieving the above object, the present invention provides a kind of multi-stage expansion mechanism, and described multi-stage expansion mechanism includes:
Basic arm;
At least two telescopic arm, its telescopically nested setting, and described at least two telescopic arm is with scalable side Formula is arranged in described basic arm;And
Driving means, it is used for driving described telescopic arm to do stretching motion relative to described basic arm,
It is characterized in that,
Described driving means is arranged on outside described telescopic arm.
Preferably, described basic arm includes:
Main skid, described telescopic arm is arranged in described main skid;And
Side slideway, it is arranged on the outside of described main skid, and described driving means includes driving arm, and described driving arm sets Putting in described side slideway, wherein, described driving arm includes telescopic oil cylinder and drives arm body, and described telescopic oil cylinder is used for driving Described driving arm body carries out stretching motion.
Preferably, each described telescopic arm is being fixedly installed connecting portion towards the side of described driving arm body;
Described driving arm body is being provided with connector towards the side of described telescopic arm, and described connector is arranged on described The end of telescopic arm, and can transverse movement, engage with the connecting portion with selected telescopic arm, and drive described selected telescopic arm Do stretching motion.
Preferably, described connecting portion is plates, and described plates are perpendicular to the telescopic direction of described telescopic arm;Described company Fitting, with draw-in groove, coordinates described plates with grafting.
Preferably, the quantity of described side slideway is two, and is symmetrical set outside described main skid,
The first driving arm and second that described driving arm includes being symmetrical set drives arm, and described first drives arm and the Two drive arm to be respectively disposed in a described side slideway, and described first drives arm and second to drive arm to carry out selected telescopic arm Synchronizing to drive, wherein, each described telescopic arm is symmetrically arranged with two connecting portions.
Preferably, it is provided with between adjacent expansion arm and is mutually locked detent mechanism, be mutually locked detent mechanism described Lockup state, stop adjacent expansion arm relative telescoping movement, in the described release conditions being mutually locked detent mechanism, it is allowed to The relative telescoping movement of adjacent expansion arm.
Preferably, it is mutually locked the lock pin that detent mechanism includes being arranged on previous telescopic arm, after being arranged on described in Lock pin location hole on one telescopic arm, and control described lock pin stretch out the bolt mechanism with contractile motion.
Preferably, described lock pin closes on the end of corresponding telescopic arm and arranges, and the quantity of described lock pin location hole is multiple, And be uniformly distributed on the length direction of corresponding telescopic arm.
Preferably, described multi-stage expansion mechanism farther includes original position lockable mechanism, for being locked by corresponding telescopic arm Only in original position, described original position lockable mechanism includes:
Single original position lock pin, it can move between off-position and multiple lock position;
Each telescopic arm close at root arrange locking hole;And,
Lock pin driver element in situ, it is used for according to original position lock pin described in the order-driven of controller in off-position And the motion between multiple lock position,
Wherein, the off-position of lock pin in position, it is allowed to all telescopic arms do stretching motion relative to basic arm;In choosing Fixed lock position, telescopic arm that locking is selected and be positioned at its outer whole telescopic arms, and discharge position in the inner whole and stretch Arm.
The present invention also provides for a kind of engineering machinery, and described engineering machinery includes multi-stage expansion mechanism as above.
In the multi-stage expansion mechanism of invention, for driving described telescopic arm to do stretching motion relative to described basic arm Driving means, is arranged on the outside of basic arm.Thus, it is to avoid arrange in arm that telescoping mechanism takes up room big shortcoming, and tool There are manufacture and the advantage such as easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of multi-stage expansion mechanism according to an embodiment of the invention.
Fig. 2 is the schematic diagram of the left driving arm in the multi-stage expansion mechanism of Fig. 1.
Fig. 3 is the schematic diagram of the basic arm in the multi-stage expansion mechanism of Fig. 1, and wherein visual angle is front side.
Fig. 4 is another schematic diagram of basic arm, and visual angle is rear side.
Fig. 5 is the schematic diagram of telescopic arm, wherein as a example by five joint telescopic arms.
Reference:
Detailed description of the invention
In the accompanying drawings, same or similar label is used to represent same or similar element or have same or like function Element.Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
In describing the invention, term " " center ", " longitudinally ", " laterally ", "front", "rear", "left", "right", " vertically ", The orientation of the instruction such as " level ", " top ", " end " " interior ", " outward " or position relationship are to close based on orientation shown in the drawings or position System, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must have Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limiting the scope of the invention.
In the present invention, telescoping mechanism refers to be used for changing in engineering machinery (such as pump truck, crane, fire fighting truck etc.) The mechanism of the length of the part such as supporting leg, jib.The function of telescoping mechanism includes stretching and shrinking, and flexible joint number is generally 2 to 5 Joint arm, more than 6 joint arms is exactly overlength joint number.
In independent oil cylinder telescoping mechanism, telescopic arm is directly realized flexible by hydraulic oil cylinder driving;It is to say, each telescopic arm There is an independent hydraulic oil cylinder driving.Row's rope telescoping mechanism is to realize stretching of arm by lay winding wire ropes between oil cylinder telescopic band swing arm Contracting motion.Telescoping mechanism of pulling pin includes basic arm and telescopic arm, utilizes single oil cylinder to realize the flexible of all telescopic arms.
Independent oil cylinder telescoping mechanism and row's rope telescoping mechanism, substantially can be completely in the product that low load, telescopic arm joint number are few Foot uses requirement.Pull pin telescoping mechanism, apply in heavy load, multi-stage telescopic arms product and relatively have prospect, but arm body weight weight, smart Degree height, manufacture requirements height, maintenance difficult etc. limit its development.
Fig. 1 is the schematic diagram of multi-stage expansion mechanism according to an embodiment of the invention.Multi-stage expansion mechanism bag shown in Fig. 1 Include: basic arm 3;At least two telescopic arm and driving means.Described telescopic arm its telescopically nested arrange, and described in stretch Contracting arm is telescopically arranged in described basic arm 3.
Figure shows 8 telescopic arms: joint telescopic arm 4, two joint telescopic arm 5, three joint telescopic arm 6, a four joint telescopic arm 7, Five joint telescopic arm 8, six joint telescopic arm 9, seven joint telescopic arm 10 and eight joint telescopic arms 11." a joint telescopic arm " refers to that first segment stretches Arm, by that analogy, " eight joint telescopic arms " refers to Section of eight telescopic arm.One joint telescopic arm 4 is set in basic arm 3, and can phase Basic arm 3 is stretched.Two joint telescopic arms 5 are arranged in a joint telescopic arm 4, and can stretch relative to a joint telescopic arm 4.With This analogizes, and eight joint telescopic arms 11 are arranged in seven joint telescopic arms 10, and can stretch relative to seven joint telescopic arms 10.Generally, respectively Telescopic arm has similar shape of cross section, and size is the most tapered.Wherein, a joint telescopic arm 4 is butt telescopic arm, and eight joints Telescopic arm 11 is end telescopic arm.It is to say, in the present invention, in the case of fully extended, close on one end of basic arm 3 Or side (right-hand member in Fig. 1 or right side) is butt or butt side, and away from one end of basic arm 3 or the side (left end in Fig. 1 Or left side) it is end or end side.
It is pointed out that technical scheme is not limited to the diagram embodiment of 8 joint telescopic arms, but can use Less or more telescopic arm.Advantageously, in the inventive solutions, the quantity of telescopic arm is more than or more than 5 joints.This The individual advantage that can preferably embody present configuration.It is to say, within lateral expansion arm and between each joint telescopic arm Stretching structure need not be arranged, so the joint number of telescopic arm can be designed as a lot.And, the cross section of telescopic arm can be designed as Less size.
Driving means is used for driving described telescopic arm to do stretching motion relative to described basic arm.It is understood that remove Other telescopic arms outside one joint telescopic arm, relative to the motion of described basic arm, are by directly with respect to stretching outside it Contracting arm and flexible and indirectly realize.
In the illustrated embodiment, driving means includes left driving arm 1 and right driving arm 2.Left driving arm 1 and right driving arm 2 It is symmetrical set in the both sides of basic arm.It is understood that one can also only be arranged drive arm.And, drive at two In the case of swing arm, it is also possible to the lateral symmetry up and down at basic arm is arranged, or sets in other position symmetries of basic arm 3 Put.The concrete structure and the power form that drive arm can be in any suitable manner.Advantageously, telescopic oil cylinder is used 1.8 (such as hydraulic jacks) are as power source.It is to say, drive arm include telescopic oil cylinder and drive arm body, described flexible Oil cylinder is used for driving described driving arm body to carry out stretching motion.Drive and on arm, be provided with installation axis hole 1.9, with by telescopic oil cylinder The piston hinge of 1.8 is to basic arm 3, specifically, is hinged to left oil cylinder seat or right oil cylinder seat.
Advantageously, the stroke of telescopic oil cylinder 1.8 is slightly larger than the maximal dilation stroke of single telescopic arm.Such as, flexible oil The stroke of cylinder 1.8 is in the range of 1.05-1.2 times of the maximal dilation stroke of single telescopic arm.
Fig. 3 is the schematic diagram of the basic arm in the multi-stage expansion mechanism of Fig. 1, and wherein visual angle is front side.Fig. 4 is basic arm Another schematic diagram, visual angle is rear side.As shown in Figure 3 and Figure 4, basic arm 3 includes: main skid 3.7 and left side slideway 3.4, right side Slideway 3.2.One joint telescopic arm 4 and other telescopic arms are all disposed within main skid 3.7, and can slide in main skid 3.7.Left Drive arm 1 and right driving arm 2 to be separately positioned in left side slideway 3.4 and right side slideway 3.2, and can within it slide.
Telescopic arm door-plate 3.1 it is provided with, for increasing the rigidity at telescopic arm mouth and intensity on basic arm 3.Telescopic arm door Plate 3.1 is arranged on the outside of basic arm 3, and two telescopic arm door-plates 3.1 are symmetrical set.
As it can be seen, left side slideway 3.4, right side slideway 3.2 are arranged at the outside of main skid 3.7.Thus, left driving arm 1 and right driving arm 2 be also disposed at the outside of main skid 3.7.It is to say, drive arm to be arranged on outside telescopic arm.As such, it is possible to It is greatly saved the space within telescopic arm;And be conducive to driving arm to safeguard.Such as, to drive arm safeguard or During repairing, it is not necessary to all telescopic arms are all pulled down.Furthermore, this structure also helps design and the peace of multi-stage expansion mechanism Dress assembling.
It is pointed out that the inner volume of main skid 3.7 is set as appropriate for accommodating a joint telescopic arm 4.Implement in diagram In example, the cross section of the inner volume of main skid 3.7 is substantially rectangular in cross section, is on the one hand easy to manufacture, on the other hand can have relatively High intensity, but the invention is not restricted to this.The inner volume of left side slideway 3.4 is set as appropriate for accommodating left driving arm 1;Right side The inner volume of slideway 3.2 is set as appropriate for accommodating right driving arm 2.In the illustrated embodiment, left side slideway 3.4 and right side slideway The cross section of the inner volume of 3.2 is substantially rectangular in cross section, is on the one hand easy to manufacture, on the other hand can have higher intensity, but It is to the invention is not restricted to this.Additionally, be additionally provided with left oil cylinder seat 3.5 in left side slideway 3.4, to install the driving of left driving arm Oil cylinder.Right oil cylinder seat 3.8 it is additionally provided with, to install the driving oil cylinder of right driving arm in right side slideway 3.2.
Selected telescopic arm (such as five joint telescopic arms 8) is carried out synchronizing to drive by left driving arm 1 and right driving arm 2.Favourable It is that each described telescopic arm is symmetrically arranged with two connecting portions, and one is used for being connected with left driving arm 1, and another is used for and the right side Arm 2 is driven to connect.It is understood that described connecting portion be fixedly installed on telescopic arm towards drive arm body side On.
Adapt therewith, drive arm body (i.e. towards the side of main skid 3.7, or claiming towards the side of telescopic arm For inner side) it is provided with connector 1.1 (also referred to as arm pin mechanism).Described connector 1.1 is arranged on the end of described driving arm, And can transverse movement, engage with the connecting portion with selected telescopic arm, and drive described selected telescopic arm to do stretching motion.
Seeing Fig. 5, described connecting portion is plates 8.1, and described plates 8.1 are perpendicular to the flexible side of described telescopic arm To;Described connector, with draw-in groove, coordinates described plates 8.1 with grafting.It is understood that the shape of described connecting portion is not It is limited to plates, such as, can also use the shapes such as pin-shaped projection.
Preferably, it is provided with between adjacent expansion arm and is mutually locked detent mechanism, be mutually locked detent mechanism described Lockup state, stop adjacent expansion arm relative telescoping movement, in the described release conditions being mutually locked detent mechanism, it is allowed to The relative telescoping movement of adjacent expansion arm.
Preferably, it is mutually locked the lock pin that detent mechanism includes being arranged on previous telescopic arm, after being arranged on described in Lock pin location hole on one telescopic arm, and control described lock pin stretch out the bolt mechanism with contractile motion.
Preferably, described lock pin closes on the end of corresponding telescopic arm and arranges, and the quantity of described lock pin location hole is multiple, And be uniformly distributed on the length direction of corresponding telescopic arm.
In the embodiment shown in fig. 5, it is mutually locked detent mechanism described in include being arranged on previous telescopic arm (adjacent expansion In arm, be positioned at the telescopic arm of butt side) on lock pin 8.2, and a telescopic arm (in adjacent expansion arm, is positioned at after being arranged on The telescopic arm of end side) on lock pin location hole 8.4.Advantageously lock pin 8.2 is a latch machine under the action of the spring Structure, it is achieved the locking with the lock pin location hole 8.4 in the adjacent expansion arm of outside and unlatching, at next joint telescopic arm, (end side is stretched Contracting arm) retracted state under, it is on state, when next joint telescopic arm reaches the operating position of needs, it and next In joint telescopic arm, corresponding lock pin location hole 8.4 is in locking state.Advantageously, lock pin 8.2 uses key switch structure, It is in lock position after i.e. pressing, after again pressing, is in off-position.In original state, lock pin 8.2 is in locking shape State.
Advantageously, see Fig. 5, each telescopic arm is provided with 4 lock pin location holes 8.4.Thus, each lock pin position Put the different relative telescopic strokes between the corresponding adjacent expansion arm in hole 8.4.Advantageously, 4 lock pin location holes 8.4 equidistantly set Put, to correspond respectively to the stroke of 1/4,2/4,3/4 and 4/4.Thus, it is possible to stretch for greater flexibility.Such as, stretch out not Same length, or realize the extension elongation set in a different manner.
It is understood that lock pin 8.2 is for next joint telescopic arm of locking.Owing to eight joint telescopic arms have been most ends The telescopic arm of end, does not has next joint telescopic arm of correspondence, so, without arranging lock pin on eight joint telescopic arms.
See Fig. 3, side slideway is provided with lock pin 3.3.The function of lock pin 3.3 is similar with the function of lock pin 8.2.Its Telescopic arm 4 is saved relative to side slideway or the telescopic location of basic arm 3 for locking one.It is to say, can be by a joint telescopic arm 4 Regard next joint telescopic arm of basic arm 3 as.
Lock pin 8.2 and lock pin 3.3 are by driving the bolt driving mechanism arranged on arm to drive.Described bolt driving mechanism wraps Include a bolt mechanism 1.4, three bolt mechanisms 1.5 of 1.3, two bolt mechanisms and four bolt mechanisms 1.6.Each concrete position The corresponding lock pin location hole 8.4 of the bolt mechanism put.
Advantageously, it is provided with position sensor 1.7 driving on arm, for sensing driving arm position in slideway. Signal is provided, it is ensured that the reliable in action of this invention telescoping mechanism, effectively for extension and contraction control program.
Preferably, described multi-stage expansion mechanism farther includes original position lockable mechanism, for being locked by corresponding telescopic arm Only in original position, described original position lockable mechanism includes:
Single original position lock pin 3.9, it can move between off-position and multiple lock position;
The locking hole arranged at root that closes at each telescopic arm (such as five joint telescopic arms 8) (i.e. initiates hole, location 8.6);And
Lock pin driver element 3.6 in situ, it is for discharging according to original position lock pin described in the order-driven of controller Motion between position and multiple lock position.
The off-position of lock pin 3.9 in position, it is allowed to all telescopic arms do stretching motion relative to basic arm 3;In choosing Fixed lock position, telescopic arm that locking is selected and be positioned at its outer whole telescopic arms, and discharge position in the inner whole and stretch Arm.Such as, in the first lock position, the height that lock pin 3.9 raises up in situ is minimum, and only locking one saves telescopic arm 4;? Second lock position, the height that lock pin 3.9 raises up in situ increases, and locking one saves telescopic arm 4 and two joint telescopic arms 5;? 3rd lock position, the height that lock pin 3.9 raises up in situ increases further, and locking one saves telescopic arm 4, two and saves telescopic arm 5 and three save telescopic arm 6.
By that analogy, finally, in the 8th lock position, the height that lock pin 3.9 raises up in situ reaches maximum, passes All telescopic arms are locked at original position, the position the most do not stretched out by the hole, initial location arranged on all telescopic arms.
The present invention also provides for a kind of engineering machinery, and described engineering machinery includes multi-stage expansion mechanism as above.
In the multi-stage expansion mechanism of invention, for driving described telescopic arm to do stretching motion relative to described basic arm Driving means, is arranged on the outside of basic arm.Thus, it is to avoid arrange in arm that telescoping mechanism takes up room big shortcoming, and tool There are manufacture and the advantage such as easy to maintenance.
Below the deployment step of multi-stage expansion mechanism of the present invention is illustrated.In following example, expansion Order, for launch the most successively, first launches the telescopic arm of inner side: eight save telescopic arms 11.
1, work starts, first to the instruction that control system input is following: to which telescopic arm stretch out, often from eight joint telescopic arms Joint telescopic arm overhang (i.e. complete stroke, or 1/4 stroke, 2/4 stroke or 4/3 stroke).It is of course also possible to eight joint telescopic arms Not relative telescopic, directly starts to stretch from other telescopic arms, such as, directly stretches out from six joint telescopic arms.
2, connector 1.1 (arm pin mechanism) crosses out, arm pin mechanism 1.1 and the connecting portion (plates of eight joint telescopic arms 8.1) clamping, thus, it is possible to be transferred to eight joint telescopic arms by the power of driving means.
3, lock pin 3.9 is first contracted to corresponding gear, i.e. corresponding with current kinetic joint arm (eight joint telescopic arms) shelves in situ Position.Ensure that eight joint telescopic arms depart from from original position lock pin 3.9, it is allowed to eight joint telescopic arms stretch out.Remaining telescopic arm then also in by The lockup state of lock pin 3.9 locking in situ, it is ensured that other telescopic arms do not stretch out with eight joint telescopic arms.
4, left driving arm 1 and the action simultaneously of right driving arm 2, drives eight joint telescopic arms to stretch, arrives the travel position set.
5, control system instruction left and right driving arm with described setting travel position corresponding position bolt mechanism action, make The lock pin locking eight of seven joint telescopic arms saves telescopic arm, it is ensured that and in eight joint telescopic arms 11, corresponding lock pin location hole is in locking State.I.e. prevent eight joint telescopic arms 11 from stretching relative to seven joint telescopic arms 10.
6, connector 1.1 is regained, say, that arm pin mechanism and eight joint telescopic arms 11 depart from.
7, left driving arm 1 shrinks with right driving arm 2 simultaneously, and seven joints are just stretched by arm pin mechanism at its arm pin mechanism 1.1 of arrival Stop during the position of the connecting portion of contracting arm shrinking.
8, arm pin mechanism stretches out, arm pin mechanism and the connecting portion clamping of seven joint telescopic arms 10;
9, lock pin 3.9 shrinks a gear more in situ, it is ensured that seven joint telescopic arms 10 depart from from original position lock pin 3.9, its Remaining telescopic arm is also in the lockup state by original position lock pin 3.9 locking, it is ensured that other telescopic arms are not with current telescopic arm (seven joints Telescopic arm 10) stretch out.
10, left driving arm 1 and the action simultaneously of right driving arm 2, drives seven joint telescopic arms 10 to stretch, to the stroke position set Put.
11, control system instruction left and right driving arm corresponding bolt mechanism action, makes current telescopic arm (seven joint telescopic arms 10) the lock pin locking of lateral expansion arm (six joint telescopic arms 9), it is ensured that and lock pin location hole corresponding in seven joint telescopic arms 10 It is in locking state.Thus, locking seven joint telescopic arm 10 and the relative telescoping movement of six joint telescopic arms 9.
12, same step, other telescopic arms the most reinflated.
The process shunk is the inverse process of said process.Do not repeating at this.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit.This The those of ordinary skill in field is it is understood that can modify to the technical scheme described in foregoing embodiments or right Wherein portion of techniques feature carries out equivalent;These amendments or replacement, do not make the essence of appropriate technical solution depart from this Invent the spirit and scope of each embodiment technical scheme.

Claims (10)

1. a multi-stage expansion mechanism, including:
Basic arm;
At least two telescopic arm, its telescopically nested setting, and described at least two telescopic arm telescopically set Put in described basic arm;And
Driving means, it is used for driving described telescopic arm to do stretching motion relative to described basic arm,
It is characterized in that,
Described driving means is arranged on outside described telescopic arm.
2. multi-stage expansion mechanism as claimed in claim 1, it is characterised in that described basic arm includes:
Main skid, described telescopic arm is arranged in described main skid;And
Side slideway, it is arranged on the outside of described main skid, and described driving means includes driving arm, and described driving arm is arranged on In described side slideway, wherein, described driving arm includes telescopic oil cylinder and drives arm body, and described telescopic oil cylinder is used for driving described Arm body is driven to carry out stretching motion.
3. multi-stage expansion mechanism as claimed in claim 2, it is characterised in that
It is being fixedly installed connecting portion towards the side of described driving arm body on each described telescopic arm;
Described driving arm body is being provided with connector towards the side of described telescopic arm, and described connector is arranged on described flexible The end of arm, and can transverse movement, engage with the connecting portion with selected telescopic arm, and drive described selected telescopic arm to do and stretch Contracting motion.
4. multi-stage expansion mechanism as claimed in claim 3, it is characterised in that
Described connecting portion is plates, and described plates are perpendicular to the telescopic direction of described telescopic arm;Described connector is with card Groove, coordinates described plates with grafting.
5. the multi-stage expansion mechanism as according to any one of claim 2-4, it is characterised in that
The quantity of described side slideway is two, and is symmetrical set outside described main skid,
Described driving arm includes that the first driving arm and second being symmetrical set drives arm, and described first drives arm and second to drive Swing arm is respectively disposed in a described side slideway, and described first drives arm and second to drive arm to synchronize selected telescopic arm Driving, wherein, each described telescopic arm is symmetrically arranged with two connecting portions.
6. the multi-stage expansion mechanism as according to any one of claim 1-4, it is characterised in that arrange between adjacent expansion arm It is mutually locked detent mechanism, at the described lockup state being mutually locked detent mechanism, stops the relative telescopic of adjacent expansion arm Motion, in the described release conditions being mutually locked detent mechanism, it is allowed to the relative telescoping movement of adjacent expansion arm.
7. multi-stage expansion mechanism as claimed in claim 6, it is characterised in that described in be mutually locked detent mechanism and include being arranged on Lock pin on previous telescopic arm, be arranged on after lock pin location hole on a telescopic arm, and control stretching of described lock pin Go out the bolt mechanism with contractile motion.
8. multi-stage expansion mechanism as claimed in claim 7, it is characterised in that described lock pin closes on the end of corresponding telescopic arm Arranging, the quantity of described lock pin location hole is multiple, and is uniformly distributed on the length direction of corresponding telescopic arm.
9. the multi-stage expansion mechanism as according to any one of claim 1-4, it is characterised in that farther include original position lock Locking mechanism, for corresponding telescopic arm is locked at original position, described original position lockable mechanism includes:
Single original position lock pin, it can move between off-position and multiple lock position;
Each telescopic arm close at root arrange locking hole;And,
Lock pin driver element in situ, its for according to described in the order-driven of controller in situ lock pin in off-position and many Motion between individual lock position,
Wherein, the off-position of lock pin in position, it is allowed to all telescopic arms do stretching motion relative to basic arm;Selected Lock position, telescopic arm that locking is selected and be positioned at its outer whole telescopic arms, and discharge position whole telescopic arms in the inner.
10. an engineering machinery, it is characterised in that include multi-stage expansion mechanism as claimed in any one of claims 1-9 wherein.
CN201610797904.0A 2016-08-31 2016-08-31 A kind of multi-stage expansion mechanism and engineering machinery Pending CN106185652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610797904.0A CN106185652A (en) 2016-08-31 2016-08-31 A kind of multi-stage expansion mechanism and engineering machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610797904.0A CN106185652A (en) 2016-08-31 2016-08-31 A kind of multi-stage expansion mechanism and engineering machinery

Publications (1)

Publication Number Publication Date
CN106185652A true CN106185652A (en) 2016-12-07

Family

ID=58085836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610797904.0A Pending CN106185652A (en) 2016-08-31 2016-08-31 A kind of multi-stage expansion mechanism and engineering machinery

Country Status (1)

Country Link
CN (1) CN106185652A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106744388A (en) * 2017-01-09 2017-05-31 三帕尔菲格特种车辆装备有限公司 Flexible arm cylinder and crane arm
CN107265316A (en) * 2017-06-26 2017-10-20 北汽福田汽车股份有限公司 Auxiliary, arm support and the equipment with arm support

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5449748A (en) * 1977-09-26 1979-04-19 Shin Meiwa Ind Co Ltd Streching device for multi-stage telescopic boom
US5678708A (en) * 1993-04-26 1997-10-21 Hiab Ab Extendible crane boom
CN202646263U (en) * 2012-06-28 2013-01-02 中联重科股份有限公司 Telescopic boom and engineering machine containing same
CN102992207A (en) * 2012-11-23 2013-03-27 徐州海伦农业科技有限公司 Telescopic boom structure of crane
CN202829374U (en) * 2012-09-20 2013-03-27 三一重工股份有限公司 Telescopic arm and crane
CN105621287A (en) * 2014-10-31 2016-06-01 无锡晟欧船舶设备有限公司 Telescoping boom structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5449748A (en) * 1977-09-26 1979-04-19 Shin Meiwa Ind Co Ltd Streching device for multi-stage telescopic boom
US5678708A (en) * 1993-04-26 1997-10-21 Hiab Ab Extendible crane boom
CN202646263U (en) * 2012-06-28 2013-01-02 中联重科股份有限公司 Telescopic boom and engineering machine containing same
CN202829374U (en) * 2012-09-20 2013-03-27 三一重工股份有限公司 Telescopic arm and crane
CN102992207A (en) * 2012-11-23 2013-03-27 徐州海伦农业科技有限公司 Telescopic boom structure of crane
CN105621287A (en) * 2014-10-31 2016-06-01 无锡晟欧船舶设备有限公司 Telescoping boom structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106744388A (en) * 2017-01-09 2017-05-31 三帕尔菲格特种车辆装备有限公司 Flexible arm cylinder and crane arm
CN107265316A (en) * 2017-06-26 2017-10-20 北汽福田汽车股份有限公司 Auxiliary, arm support and the equipment with arm support
CN109292650A (en) * 2017-06-26 2019-02-01 北汽福田汽车股份有限公司 Auxiliary
CN107265316B (en) * 2017-06-26 2019-10-22 北汽福田汽车股份有限公司 Cantilever crane and equipment with cantilever crane
CN109292650B (en) * 2017-06-26 2020-04-14 北汽福田汽车股份有限公司 Auxiliary arm

Similar Documents

Publication Publication Date Title
US7703616B2 (en) Telescopable sliding beam
CN106185652A (en) A kind of multi-stage expansion mechanism and engineering machinery
CN105417410A (en) Telescoping arm structure with locking mechanism and crane
CN103626036B (en) The steerable system of lorry-mounted crane, lorry-mounted crane and truck with loading crane
CN106219421B (en) A kind of multi-stage expansion mechanism and engineering machinery
CN103896155B (en) Control the hydraulic control system of twin-tub sequential telescopic, suspension arm mechanism and hoisting crane
CN104591014B (en) Telescoping cylinder, leg control system and crane
CN102285598B (en) Multi-section arm telescopic device and crane with same
CN106081644A (en) A kind of grabbing device of stacking machine
CN102583174A (en) Crane boom
CN202400760U (en) Crane and telescopic arm device of same
CN205346686U (en) Flexible arm structure and hoist with go back to mechanism of contracting
CN206970063U (en) A kind of crane five-stage telescopic boom
CN102837681A (en) Stretching structure for baffle block of three-sectional supporting leg cylinder
CN100513293C (en) Parallel type inserted-pin mechanism for crane
CN106586817B (en) For the stone tongs of arch, handgrip mechanism and arch trolley
CN203308404U (en) Compound derrick intelligent formation testing well repairing vehicle
CN100999298A (en) Connecting rod type carrying pin inserting mechanism for crane
CN104129725A (en) Single-cylinder pin type telescopic arm, telescopic method and crane
EP3174821B1 (en) Telescopic arm for operating machines
CN105060143B (en) A kind of gib arm of crane frame mechanism and crane
CN110255371A (en) A kind of latch hook mechanism and crane
CN204529163U (en) Crane arm, hoisting crane, construction machinery and equipment
CN205294674U (en) Bolt connection structure, cantilever crane and hoist
CN203428812U (en) Truss type extending and retracting arm and crane comprising same

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20161207

RJ01 Rejection of invention patent application after publication