CN106219421A - A kind of multi-stage expansion mechanism and engineering machinery - Google Patents
A kind of multi-stage expansion mechanism and engineering machinery Download PDFInfo
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- CN106219421A CN106219421A CN201610797901.7A CN201610797901A CN106219421A CN 106219421 A CN106219421 A CN 106219421A CN 201610797901 A CN201610797901 A CN 201610797901A CN 106219421 A CN106219421 A CN 106219421A
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- arm
- telescopic
- telescopic arm
- driving
- lock pin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
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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；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
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；
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 a and 5b is the schematic diagram of telescopic arm, and one of them illustrates odd number telescopic arm, and another illustrates even number telescopic arm.
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 the first and second driving means.Described telescopic arm is telescopically nested to be arranged,
And described telescopic arm is telescopically arranged in basic arm 3.First driving means (odd number arm driving means) includes lower-left
Drive arm 1a and bottom right to drive arm 2a, be used for driving odd number telescopic arm to do stretching motion relative to basic arm 3.Second driving means
(even number arm driving means) includes that upper left drives arm 2a and upper right to drive arm 2b for driving even number telescopic arm relative to basic arm 3
Do stretching motion.It is understood that odd number arm driving means can also be disposed over, and even number arm driving means is set
Putting in lower section, this is also within protection scope of the present invention.
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, three joint telescopic arm 6, five saves telescopic arm 8
It is odd number telescopic arm with seven joint telescopic arms 10, the first driving means drives, and do stretching motion relative to basic arm 3.Two joints
Telescopic arm 5, four joint telescopic arm 7, six joint telescopic arm 9 and eight joint telescopic arms 11 are even number telescopic arms, the second driving means drive,
And do stretching motion relative to basic arm 3.
One joint telescopic arm 4 is set in basic arm 3, and can stretch relative to basic arm 3.Two joint telescopic arms 5 are arranged on
In one joint telescopic arm 4, and can stretch relative to a joint telescopic arm 4.By that analogy, eight joint telescopic arms 11 be arranged on seven joints stretch
In arm 10, and can stretch relative to seven joint telescopic arms 10.Generally, each telescopic arm has similar shape of cross section, and transversal
Face size is the most tapered.Wherein, a joint telescopic arm 4 is butt telescopic arm, and eight joint telescopic arms 11 are end telescopic arms.Namely
Saying, in the present invention, in the case of fully extended, one end or side (right-hand member in Fig. 1 or the right side) of closing on basic arm 3 are
Butt or butt side, and the one end or side (left end in Fig. 1 or left side) away from basic arm 3 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
Within the advantage that can preferably embody present configuration: in the present invention, lateral expansion arm (end telescopic arm) and each
Stretching structure need not be arranged, so the joint number of telescopic arm can be designed as much between joint telescopic arm.And, telescopic arm transversal
Face can be designed as less size.It is compacter that this advantageously allows total, and easier for installation.
First and second driving means are used for driving described telescopic arm to do stretching motion relative to basic arm 3.It is appreciated that
, other telescopic arms in addition to a joint telescopic arm, relative to the motion of basic arm 3, are by directly with respect to outside it
Telescopic arm carry out flexible and indirectly realize.
In the illustrated embodiment, the first driving means includes that lower-left drives arm 1a and bottom right to drive arm 2a；Second drives dress
Put and include that upper left drives arm 1b and upper right to drive arm 2b.Lower-left drives arm 1a and bottom right to drive arm 2a left in the both sides of basic arm 3
The right side is symmetrical arranged；Upper left drives arm 1b and upper right to drive arm 2b to be also symmetrical set in the both sides of basic arm 3.It is thus possible to
The both sides of one telescopic arm drive telescopic arm, beneficially the easy motion of telescopic arm.It is understood that can also be only one
Side arranges driving arm to drive telescopic arm.Such as, only arranging lower-left drives arm 1a and upper left to drive arm 1b；Or lower-left is only set
Arm 1a and upper right is driven to drive arm 2b, thus, telescopic arm is only driven in side.This kind of mode structure is simpler, but unfavorable
In the even running of telescopic arm, the phenomenon of telescopic arm clamping stagnation easily occurs.In the present invention, telescopic arm is driven from side.This
Make without arranging driving means inside telescopic arm, thus telescopic arm structure can be greatly simplified.
The concrete structure and the power form that drive arm can be in any suitable manner.Advantageously, employing is flexible
Oil cylinder 1.8 (such as hydraulic jack) is as power source.It is to say, each driving arm includes telescopic oil cylinder and drives arm body,
Described telescopic 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, to incite somebody to action
The piston of telescopic oil cylinder 1.8 or piston rod are hinged to basic arm 3, specifically, are hinged to corresponding oil cylinder seat 3.5.
Advantageously, the range (movable scope) of telescopic oil cylinder 1.8 is slightly larger than the maximal dilation of single telescopic arm
Stroke.Such as, the range of telescopic oil cylinder 1.8 is the scope of 1.05-1.2 times of maximal dilation stroke of single telescopic arm
In.Thus, the traveled distance of telescopic oil cylinder 1.8 is less than its range.
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 lower left side slideway 3.4, the right side
Lower side slideway 3.2；Upper left side slideway 3.9, upper right side slideway 3.8.One joint telescopic arm 4 and other telescopic arms are all disposed within main skid
In 3.7, and can slide in main skid 3.7.Lower-left drive arm 1a, bottom right drive arm 2a, upper left to drive arm 1b and upper right
Arm 2b is driven to be separately positioned on corresponding lower left side slideway 3.4, lower right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway
In 3.8, 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, lower left side slideway 3.4, lower right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway 3.8 are all provided with
Put the outside at main skid 3.7.Thus, lower-left drive arm 1a, bottom right drive arm 2a, upper left to drive arm 1b and upper right to drive arm
2b is also disposed at the outside of main skid 3.7.It is to say, drive arm to be arranged on outside telescopic arm.Stretch as such, it is possible to be greatly saved
Space within contracting arm；And be conducive to driving arm to safeguard.Such as, when driving arm is safeguarded or is repaired, nothing
All telescopic arms all need to be pulled down.Furthermore, this structure also helps design and the installation assembling of multi-stage expansion mechanism.
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 lower left side slideway 3.4 is set as appropriate for accommodating lower-left and drives arm 1a；The inside of lower right side slideway 3.2
Cavity volume is set as appropriate for accommodating bottom right and drives arm 2.The inner volume of lower left side slideway 3.4 is set as appropriate for accommodating lower-left and drives arm
1a；The inner volume of lower right side slideway 3.2 is set as appropriate for accommodating bottom right and drives arm 2.In the illustrated embodiment, lower left side slideway
3.4, the cross section of the inner volume of lower right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway 3.8 is substantially rectangular in cross section, and one
Aspect is easy to manufacture, and on the other hand can have higher intensity, but the invention is not restricted to this.
Lower left side slideway 3.4, lower right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway 3.8 are additionally provided with
Corresponding oil cylinder seat 3.5, to install the driving oil cylinder (telescopic oil cylinder 1.8) of respective drive arm.
Lower-left drives arm 1a and bottom right to drive arm 2a that selected odd number telescopic arm (such as five joint telescopic arms 8) is carried out synchronization and drives
Dynamic.Advantageously, each odd number telescopic arm left and right sides is symmetrically arranged with two connecting portions, one be positioned at left side for lower-left
Driving arm 1a to connect, another is positioned at right side for driving arm 2a to be connected with bottom right.It is understood that described connecting portion is fixed
Be arranged on telescopic arm towards drive arm body side on.Similarly, upper left drives arm 1b and upper right to drive arm 2b to choosing
Fixed even number telescopic arm carries out synchronizing to drive；Each even number telescopic arm left and right sides is symmetrically arranged with two connecting portions.
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 a and 5b, described connecting portion is plates 8.1, and described plates 8.1 are perpendicular to stretching of described telescopic arm
Contracting direction；Described connector, with draw-in groove, coordinates described plates 8.1 with grafting.It is understood that the shape of described connecting portion
Shape is not 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 a and 5b, described in be mutually locked detent mechanism and include being arranged on previous telescopic arm (phase
In adjacent telescopic arm, be positioned at the telescopic arm of butt side) on lock pin 8.2, an and telescopic arm (adjacent expansion arm after being arranged on
In, be positioned at the telescopic arm of end side) on lock pin location hole 8.4.Advantageously lock pin 8.2 be one under the action of the spring
Bolt mechanism, 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 telescopic arm) retracted state under, it is on state, when next joint telescopic arm reaches the operating position of needs, it
It is in locking state with corresponding lock pin location hole 8.4 in next joint telescopic arm.Advantageously, lock pin 8.2 uses key to open
Close structure, be in lock position after i.e. pressing, after again pressing, be in off-position.In original state, lock pin 8.2 is in
Lockup state.
Advantageously, see Fig. 5 a or 5b, each telescopic arm is provided with 4 lock pin location holes 8.4.Thus, each
Different relative telescopic strokes between the corresponding adjacent expansion arm of lock pin location hole 8.4.Advantageously, 4 lock pin location holes 8.4 etc.
Spacing is arranged, 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 different 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.
As shown in figure 5a and 5b, lock pin location hole odd number telescopic arm and even number telescopic arm arranged is not at height
Center, but deviation height split.Additionally, the lock pin location hole arranged on odd number telescopic arm and even number telescopic arm relative to
Highly split is symmetrical.
Corresponding, the lock pin 8.2 that odd number telescopic arm and even number telescopic arm are arranged is not at the middle part of height
Place, but deviation height split.Additionally, the lock pin 8.2 arranged on odd number telescopic arm and even number telescopic arm is relative to height
Split is symmetrical.
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 driven by the bolt driving mechanism arranged on respective drive arm.Described bolt driving machine
Structure includes a bolt mechanism 1.4, three bolt mechanisms 1.5 of 1.3, two bolt mechanisms and four bolt mechanisms 1.6.Each tool
The corresponding lock pin location hole 8.4 of the bolt mechanism of body position.
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 3.10, 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 3.10 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 3.10 raises up in situ is minimum, and only locking one saves telescopic arm 4；
In the second lock position, the height that lock pin 3.10 raises up in situ increases, and locking one saves telescopic arm 4 and two joint telescopic arms 5；
In the 3rd lock position, the height that lock pin 3.10 raises up in situ increases further, and locking one saves telescopic arm 4, two joint and stretches
Contracting arm 5 and three joint telescopic arms 6.
By that analogy, finally, in the 8th lock position, the height that lock pin 3.10 raises up in situ reaches maximum, wears
Cross the hole, initial location arranged on all telescopic arms, all telescopic arms are locked at original position, the position the most do not stretched out.
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, the connector 1.1 (arm pin mechanism) of respective drive arm crosses out, arm pin mechanism 1.1 and the company of eight joint telescopic arms
Connect portion's (plates 8.1) clamping, thus, it is possible to the power of driving means to be transferred to eight joint telescopic arms.With eight joint telescopic arm (even numbers
Telescopic arm) corresponding driving arm is upper left driving arm 1b and upper right drives arm 2b.
3, lock pin 3.10 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 11 depart from from original position lock pin 3.10, i.e. allow eight joint telescopic arms 11 to stretch out.Remaining telescopic arm is then also
It is in by the lockup state of original position lock pin 3.10 locking, it is ensured that other telescopic arms do not stretch out with eight joint telescopic arms 11.
4, upper left drives arm 1b and upper right to drive arm 2b action simultaneously (stretching, extension), drives eight joint telescopic arms 11 to stretch, arrives
The travel position set.
5, control system instruction upper left drives arm 1b and upper right that drive arm 2b with the described corresponding position of setting travel position
Bolt mechanism action, makes the lock pin locking eight of seven joint telescopic arms 10 save telescopic arm 11, it is ensured that and corresponding in eight joint telescopic arms 11
Lock pin location hole be in locking state.I.e. prevent eight joint telescopic arms 11 from stretching relative to seven joint telescopic arms 10.
6, lock pin 3.10 shrinks a gear, i.e. corresponding with current kinetic joint arm (seven joint telescopic arms) shelves more in situ
Position.Ensure that seven joint telescopic arms 10 depart from from original position lock pin 3.10, i.e. allow seven joint telescopic arms 10 to stretch out.Remaining telescopic arm is then also
It is in by the lockup state of original position lock pin 3.10 locking, it is ensured that other telescopic arms do not stretch out with seven joint telescopic arms 10.
7 connectors 1.1 (arm pin mechanism) that drive arm corresponding with seven joints telescopic arm (odd number telescopic arm) are laterally stretched
Going out, arm pin mechanism 1.1 and connecting portion (plates 8.1) clamping of seven joint telescopic arms 10, thus, it is possible to pass the power of driving means
It is handed to seven joint telescopic arms 10.With seven joint telescopic arm 10 (it is even number telescopic arm) corresponding driving arms be lower-left drive arm 1a and
Bottom right drives arm 2a.
Meanwhile, upper left drives arm 1b and upper right to drive the connector 1.1 of arm 2b to regain, say, that arm pin mechanism
Depart from eight joint telescopic arms 11.
8, lower-left drives arm 1a and bottom right to drive arm 2a action simultaneously (stretching, extension), drives seven joint telescopic arms 10 to stretch, arrives
The travel position set
Meanwhile, upper left drives arm 1b and upper right to drive arm 2b to shrink, and arm pin mechanism arrives its arm pin mechanism 1.1 just to six
Stop shrinking during the position of connecting portion of joint telescopic arm 9.
9, control system instruction lower-left drives arm 1a and bottom right that drive arm 2a with the described corresponding position of setting travel position
Bolt mechanism action, makes the lock pin locking seven of six joint telescopic arms 9 save telescopic arm 10, it is ensured that and correspondence in seven joint telescopic arms 10
Lock pin location hole is in locking state.I.e. prevent seven joint telescopic arms 10 from stretching relative to six joint telescopic arms 9.
10, lock pin 3.10 shrinks a gear, i.e. corresponding with current kinetic joint arm (six joint telescopic arms) shelves more in situ
Position.Ensure that six joint telescopic arms 9 depart from from original position lock pin 3.10, i.e. allow six joint telescopic arms 9 to stretch out.Remaining telescopic arm is the most also located
In the lockup state by original position lock pin 3.10 locking, it is ensured that other telescopic arms do not stretch out with six joint telescopic arms 9.
11, the like, in the way of odd-even alternation, launch other telescopic arms.
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；
First driving means, it is used for driving odd number telescopic arm to do stretching motion relative to described basic arm；And
Second driving means, it is used for driving even number telescopic arm to do stretching motion relative to described basic arm,
It is characterized in that,
Described first driving means and the second driving means are 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 first driving means and the second driving means include driving arm,
And described driving arm is arranged in described side slideway, wherein, described driving arm includes telescopic oil cylinder and drives arm body, described in stretch
Contracting oil cylinder is used for driving described driving arm body 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 four, and is symmetrical set outside described main skid,
The either above or below driving arm being arranged on described second driving means of described first driving means, described first drives
The described driving arm of dynamic device and described second driving means all includes that the first driving arm and second being symmetrical set drives
Arm, described first drives arm and second to drive arm to be respectively disposed in a described side slideway, and described first drives arm and second
Driving arm to carry out selected telescopic arm synchronizing to drive, 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.
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| CN201610797901.7A CN106219421B (en) | 2016-08-31 | 2016-08-31 | A kind of multi-stage expansion mechanism and engineering machinery |
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| CN201610797901.7A CN106219421B (en) | 2016-08-31 | 2016-08-31 | A kind of multi-stage expansion mechanism and engineering machinery |
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| CN107082377A (en) * | 2017-05-18 | 2017-08-22 | 南宁钛银科技有限公司 | A kind of novel heavy duty mechanical-stretching equipment |
| CN108709013A (en) * | 2018-07-31 | 2018-10-26 | 徐工集团工程机械有限公司 | Telescopic jib system and engineering machinery |
| CN110255399A (en) * | 2019-06-17 | 2019-09-20 | 徐州徐工液压件有限公司 | A kind of super-tonnage crane telescopic hydraulic cylinder hanging type slideway climbing structure |
| CN110259782A (en) * | 2019-06-20 | 2019-09-20 | 深圳市世椿智能装备股份有限公司 | A kind of multistage retractable rod |
| CN112340303A (en) * | 2019-08-06 | 2021-02-09 | 湖北省专用汽车研究院 | Carriage detachable garbage truck colludes arm device |
| CN114521476A (en) * | 2022-02-23 | 2022-05-24 | 长沙希嘉机电科技有限公司 | Telescopic arm mechanism and sanitation cleaning trolley |
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| CN114521476A (en) * | 2022-02-23 | 2022-05-24 | 长沙希嘉机电科技有限公司 | Telescopic arm mechanism and sanitation cleaning trolley |
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| CN106219421B (en) | 2018-11-20 |
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