CN106219421B - A kind of multi-stage expansion mechanism and engineering machinery - Google Patents

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

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Publication number
CN106219421B
CN106219421B CN201610797901.7A CN201610797901A CN106219421B CN 106219421 B CN106219421 B CN 106219421B CN 201610797901 A CN201610797901 A CN 201610797901A CN 106219421 B CN106219421 B CN 106219421B
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Prior art keywords
arm
telescopic
driving
lock pin
telescopic arm
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CN106219421A (en
Inventor
韩润录
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Hebei Leisa Heavy Construction Machinery Co., Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN201610797901.7A priority Critical patent/CN106219421B/en
Publication of CN106219421A publication Critical patent/CN106219421A/en
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    • 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

Abstract

The invention discloses a kind of multi-stage expansion mechanism and engineering machinery.The multi-stage expansion mechanism includes:Basic arm;At least two telescopic arms, telescopically nested setting, and at least two telescopic arm is telescopically arranged in the basic arm;Driving device is used to that the telescopic arm to be driven to do stretching motion relative to the basic arm, wherein the driving device is arranged except the telescopic arm.In the multi-stage expansion mechanism of invention, for driving the telescopic arm to do relative to the basic arm driving device of stretching motion, the outside of basic arm is set.To avoid the disadvantage that arrangement telescoping mechanism occupied space is big in arm, and have many advantages, such as to manufacture and 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, more particularly to a kind of multi-stage expansion mechanism and engineering machinery.
Background technique
Telescoping mechanism is the common mechanism in the engineering machinery such as crane, concrete mixer.In the prior art, it stretches Mechanism is generally divided into three kinds:Independent oil cylinder telescoping mechanism, row's rope telescoping mechanism and automatic pinning formula telescoping mechanism.
The characteristics of independent oil cylinder telescoping mechanism is telescopic arm as the quantity of oil cylinder, and the joint number of arm cannot be too many, is stretched Mechanism occupancy area of section is big, weight weight (weight relative to arm assembly), and the quantity of general telescopic arm is no more than 3 sections.
The characteristics of row's rope telescoping mechanism is that the joint number of arm can only generally accomplish within 5 sections, telescoping mechanism from it is great (relative to The weight of arm assembly).
Automatic pinning formula telescoping mechanism has the shortcomings that following:1, telescoping mechanism is arranged in arm, and the volume of occupancy is larger, arm Section is big, and arm overall weight is heavier;2, in overlength arm joint number, load-carrying is required in relatively small structure, and arm is bulky, should Structure is not applicable;3, it requires structure precision high, height is required to manufacture, maintenance of breaking down is inconvenient.
Thus, it is desirable to have a kind of technical solution come overcome or at least mitigate in the drawbacks described above of the prior art at least one It is a.
Summary of the invention
The purpose of the present invention is to provide a kind of technical solutions to overcome or at least mitigate in the drawbacks described above of the prior art At least one.
To achieve the above object, the present invention provides a kind of multi-stage expansion mechanism, and the multi-stage expansion mechanism includes:
Basic arm;
At least two telescopic arms, telescopically nested setting, and at least two telescopic arm is with scalable side Formula is arranged in the basic arm;
Driving device is used to that the telescopic arm to be driven to do stretching motion relative to the basic arm,
It is characterized in that,
The driving device is arranged except the telescopic arm.
Preferably, the basic arm includes:
Main skid, the telescopic arm are arranged in the main skid;And
The outside of the main skid is arranged in side slideway, and the driving device includes actuating arm, and the actuating arm is set It sets in the side slideway, wherein the actuating arm includes telescopic oil cylinder and driving arm body, and the telescopic oil cylinder is for driving The driving arm body carries out stretching motion.
Preferably, interconnecting piece is being fixedly installed towards the side of the driving arm body on each telescopic arm;
The driving arm body is provided with connector in the side towards the telescopic arm, and the connector is arranged described The end of telescopic arm, and can transverse movement, to engage with the interconnecting piece of selected telescopic arm, and drive the selected telescopic arm Do stretching motion.
Preferably, the interconnecting piece is plates, telescopic direction of the plates perpendicular to the telescopic arm;The company Fitting has card slot, with the mating plates.
Preferably, the quantity of the side slideway is two, and is symmetrical set except the main skid,
The actuating arm includes the first actuating arm and the second actuating arm being symmetrical set, first actuating arm and Two actuating arms are respectively disposed in the side slideway, and first actuating arm and the second actuating arm carry out selected telescopic arm Synchronous driving, wherein each telescopic arm is arranged symmetrically, and there are two interconnecting pieces.
Preferably, it is provided between adjacent expansion arm and is mutually locked positioning mechanism, be mutually locked positioning mechanism described Lockup state, prevent the relative telescoping movement of adjacent expansion arm, in the release conditions for being mutually locked positioning mechanism, allow The relative telescoping movement of adjacent expansion arm.
Preferably, the positioning mechanism that is mutually locked includes the lock pin being arranged on previous telescopic arm, with setting rear Lock pin position hole on one telescopic arm, and control the stretching of the lock pin and the bolt mechanism of contractile motion.
Preferably, the lock pin closes on the end setting of corresponding telescopic arm, the quantity in the lock pin position hole be it is multiple, And it is uniformly distributed on the length direction of corresponding telescopic arm.
Preferably, the multi-stage expansion mechanism further comprises initial position lockable mechanism, for locking corresponding telescopic arm Only in initial position, the initial position lockable mechanism includes:
Single original position lock pin, can move between releasing position and multiple lock positions;
The locking hole being arranged at root is closed in each telescopic arm;And
Lock pin driving unit in situ is used for the original position lock pin according to the order-driven of controller in releasing position Movement between multiple lock positions,
Wherein, the releasing position of lock pin in situ, allows all telescopic arms to do stretching motion relative to basic arm;It is selecting Fixed lock position, the selected telescopic arm of locking and whole telescopic arms outside it, and the whole of release position in the inner is flexible Arm.
The present invention also provides a kind of engineering machinery, the engineering machinery includes multi-stage expansion mechanism as described above.
In the multi-stage expansion mechanism of invention, for driving the telescopic arm to do stretching motion relative to the basic arm The outside of basic arm is arranged in driving device.To avoid the disadvantage that arrangement telescoping mechanism occupied space is big in arm, and have Have the advantages that manufacture and it is easy to maintenance.
Detailed description of the invention
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 actuating 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 are the schematic diagrames of telescopic arm, one of them shows odd number telescopic arm, another shows even number telescopic arm.
Appended drawing reference:
Specific embodiment
In the accompanying drawings, same or similar element is indicated using same or similar label or there is same or like function Element.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the scope of the invention.
In the present invention, telescoping mechanism refer in engineering machinery (pump truck, crane, fire fighting truck etc.) for changing The mechanism of the length of the parts such as supporting leg, cantilever crane.The function of telescoping mechanism includes stretching, extension and shrinks, 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 by oil cylinder driving flexible;That is, each telescopic arm There is an independent oil cylinder driving.Row's rope telescoping mechanism is to realize stretching for arm by winding wire ropes between oil cylinder telescopic band swing arm Contracting movement.Telescoping mechanism of pulling pin includes basic arm and telescopic arm, and the flexible of all telescopic arms is realized using single oil cylinder.
Independent oil cylinder telescoping mechanism and row's rope telescoping mechanism, substantially can be full in the few product of low load, telescopic arm joint number Sufficient requirement.It pulls pin telescoping mechanism, using relatively having prospect, but arm body weight weight, essence in heavy load, multi-stage telescopic arms product Degree is high, manufacture requires height, maintenance difficult etc. to 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 packet shown in FIG. 1 It includes:Basic arm 3;At least two telescopic arms and the first and second driving devices.The telescopic arm telescopically nested setting, And the telescopic arm is telescopically arranged in basic arm 3.First driving device (odd number arm driving device) includes lower-left Actuating arm 1a and bottom right actuating arm 2a, for driving odd number telescopic arm to do stretching motion relative to basic arm 3.Second driving device (even number arm driving device) includes upper left actuating arm 2a and upper right actuating arm 2b for driving even number telescopic arm relative to basic arm 3 Do stretching motion.It is understood that odd number arm driving device can also be disposed over, and even number arm driving device is set It sets in lower section, this is also within protection scope of the present invention.
8 telescopic arms are shown in figure:One section telescopic arm 4, two section telescopic arms 5, three section telescopic arms 6, four section telescopic arms 7, Five section telescopic arms 8, six section telescopic arms 9, seven section telescopic arms 10 and eight section telescopic arms 11." a section telescopic arm " refers to that first segment is flexible Arm, and so on, " eight section telescopic arms " refers to Section of eight telescopic arm.One section telescopic arm 4, three section telescopic arms 6, five section telescopic arms 8 It is odd number telescopic arm with seven section telescopic arms 10, is driven by first driving device, and does stretching motion relative to basic arm 3.Two sections Telescopic arm 5, four section telescopic arms 7, six section telescopic arms 9 and eight section telescopic arms 11 are even number telescopic arms, are driven by the second driving device, And stretching motion is done relative to basic arm 3.
One section telescopic arm 4 is set in basic arm 3, and can be flexible relative to basic arm 3.The setting of two section telescopic arms 5 exists In one section telescopic arm 4, and can be flexible relative to a section telescopic arm 4.And so on, the setting of eight section telescopic arms 11 is flexible in seven sections In arm 10, and can be flexible relative to seven section telescopic arms 10.In general, each telescopic arm has similar cross-sectional shape, and transversal Face size is successively tapered.Wherein, a section telescopic arm 4 is butt telescopic arm, and eight section telescopic arms 11 are end telescopic arms.Namely It says, in the present invention, in the case where fully extended, the one end or side (right end or right side in Fig. 1) for closing on basic arm 3 are Butt or butt side, and one end or side (left end or left side in Fig. 1) far from basic arm 3 they are end or end side.
It should be pointed out that technical solution of the present invention is not limited to the illustrated embodiment of 8 section telescopic arms, but can use Less or more telescopic arm.Advantageously, in the inventive solutions, the quantity of telescopic arm is greater than or more than 5 section.This The advantages of structure of the invention can preferably be embodied:In the present invention, within most inner side telescopic arm (end telescopic arm) and each It saves and does not have to arrangement stretching structure between telescopic arm, so the joint number of telescopic arm can be designed as very much.Moreover, telescopic arm is transversal Face can be designed as lesser size.It is more compact and easier for installation that this advantageously allows total.
First and second driving devices are for driving the telescopic arm to do stretching motion relative to basic arm 3.It is understood that , movement of other telescopic arms relative to basic arm 3 other than a section telescopic arm is by directly with respect to its outside Telescopic arm stretched and indirectly realized.
In the illustrated embodiment, first driving device includes lower-left actuating arm 1a and bottom right actuating arm 2a;Second driving dress It sets including upper left actuating arm 1b and upper right actuating arm 2b.Lower-left actuating arm 1a and bottom right actuating arm 2a is left in the two sides of basic arm 3 The right side is symmetrical arranged;Upper left actuating arm 1b and upper right actuating arm 2b are also symmetrical set in the two sides of basic arm 3.So as to The two sides of one telescopic arm drive telescopic arm, are conducive to the smooth motion of telescopic arm.It is understood that can also be only one Actuating arm is arranged to drive telescopic arm in side.For example, lower-left actuating arm 1a and upper left actuating arm 1b is only arranged;Or lower-left is only set Actuating arm 1a and upper right actuating arm 2b, thus, only telescopic arm is driven in side.Such mode structure is simpler, but unfavorable In the even running of telescopic arm, the phenomenon that being easy to appear telescopic arm clamping stagnation.In the present invention, telescopic arm is driven from side.This So that no setting is required driving device inside telescopic arm, so that telescopic arm structure can greatly simplify.
The specific structure and power form of actuating arm can be in any suitable manner.Advantageously, using flexible Oil cylinder 1.8 (such as hydraulic cylinder) is used as power source.That is, each actuating arm includes telescopic oil cylinder and driving arm body, The telescopic oil cylinder is for driving the driving arm body to carry out stretching motion.Mounting shaft hole 1.9 is provided on actuating arm, it will The piston or piston rod of telescopic oil cylinder 1.8 are hinged to basic arm 3, specifically, are hinged to corresponding oil cylinder seat 3.5.
Advantageously, the range (movable range) of telescopic oil cylinder 1.8 is slightly larger than the maximal dilation of single telescopic arm Stroke.For example, the range of telescopic oil cylinder 1.8 is 1.05-1.2 times of range of the maximal dilation stroke of single telescopic arm It is interior.To which 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 are 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 section telescopic arm 4 and other telescopic arms are all disposed within main skid In 3.7, and it can be slided in main skid 3.7.Lower-left actuating arm 1a, bottom right actuating arm 2a, upper left actuating arm 1b and upper right Actuating arm 2b is separately positioned on corresponding lower-left side slideway 3.4, bottom right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway In 3.8, and it can be slided in it.
Telescopic arm door-plate 3.1 is provided on basic arm 3, for increasing rigidity and intensity at telescopic arm mouth.Telescopic arm door The outside of basic arm 3 is arranged in plate 3.1, and two telescopic arm door-plates 3.1 are symmetrical set.
As shown, lower-left side slideway 3.4, bottom right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway 3.8 are all provided with It sets in the outside of main skid 3.7.To, lower-left actuating arm 1a, bottom right actuating arm 2a, upper left actuating arm 1b and upper right actuating arm 2b is also disposed at the outside of main skid 3.7.That is, actuating arm is arranged except telescopic arm.It is stretched in this way, can greatly save Space inside contracting arm;And be conducive to safeguard actuating arm.For example, when being maintained or repaired to actuating arm, nothing All telescopic arms need to all be removed.Furthermore, which also helps the design of multi-stage expansion mechanism and installation is assembled.
It should be pointed out that the inner volume of main skid 3.7 is set as appropriate for accommodating a section telescopic arm 4.Implement in diagram Example in, the cross section of the inner volume of main skid 3.7 is substantially rectangular in cross section, on the one hand convenient for manufacture, on the other hand can have compared with 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 actuating arm 1a;The inside of bottom right side slideway 3.2 Cavity is set as appropriate for accommodating bottom right actuating arm 2.The inner volume of lower-left side slideway 3.4 is set as appropriate for accommodating lower-left actuating arm 1a;The inner volume of bottom right side slideway 3.2 is set as appropriate for accommodating bottom right actuating arm 2.In the illustrated embodiment, lower-left side slideway 3.4, the cross section of the inner volume of bottom 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 convenient for manufacture, on the other hand can intensity with higher, but the invention is not restricted to this.
It is additionally provided in lower-left side slideway 3.4, bottom right side slideway 3.2, upper left side slideway 3.9 and upper right side slideway 3.8 Corresponding oil cylinder seat 3.5, to install the drive cylinder (telescopic oil cylinder 1.8) of respective drive arm.
Lower-left actuating arm 1a and bottom right actuating arm 2a synchronizes drive to selected odd number telescopic arm (such as five section telescopic arms 8) It is dynamic.Advantageously, be symmetrical arranged at left and right sides of each odd number telescopic arm there are two interconnecting piece, one is located at left side and is used for and lower-left Actuating arm 1a connection, another is located at right side for connecting with bottom right actuating arm 2a.It is understood that the interconnecting piece is fixed Be arranged in telescopic arm on the side towards driving arm body.Similarly, upper left actuating arm 1b and upper right actuating arm 2b are to choosing Fixed even number telescopic arm synchronizes driving;Interconnecting piece there are two being symmetrical arranged at left and right sides of each even number telescopic arm.
It is adapted therewith, driving arm body (i.e. towards the side of main skid 3.7, or claims towards the side of telescopic arm For inside) it is provided with connector 1.1 (also referred to as arm pin mechanism).The end of the actuating arm is arranged in the connector 1.1, And can transverse movement, to engage with the interconnecting piece of selected telescopic arm, and the selected telescopic arm is driven to do stretching motion.
Referring to Fig. 5 a and 5b, the interconnecting piece is plates 8.1, the stretching perpendicular to the telescopic arm of plates 8.1 Contracting direction;The connector has card slot, with the mating plates 8.1.It is understood that the shape of the interconnecting piece Shape is not limited to plates, such as can also be using shapes such as pin-shaped protrusions.
Preferably, it is provided between adjacent expansion arm and is mutually locked positioning mechanism, be mutually locked positioning mechanism described Lockup state, prevent the relative telescoping movement of adjacent expansion arm, in the release conditions for being mutually locked positioning mechanism, allow The relative telescoping movement of adjacent expansion arm.
Preferably, the positioning mechanism that is mutually locked includes the lock pin being arranged on previous telescopic arm, with setting rear Lock pin position hole on one telescopic arm, and control the stretching of the lock pin and the bolt mechanism of contractile motion.
Preferably, the lock pin closes on the end setting of corresponding telescopic arm, the quantity in the lock pin position hole be it is multiple, And it is uniformly distributed on the length direction of corresponding telescopic arm.
In the embodiment shown in Fig. 5 a and 5b, the positioning mechanism that is mutually locked includes being arranged in previous telescopic arm (phase In adjacent telescopic arm, telescopic arm positioned at butt side) on lock pin 8.2, and be arranged in latter telescopic arm (adjacent expansion arm In, positioned at the telescopic arm of end side) on lock pin position hole 8.4.Advantageously lock pin 8.2 be one under the action of the spring Bolt mechanism, the locking and unlatching of realization and the lock pin position hole 8.4 in the adjacent expansion arm of outside, at next section telescopic arm (end End side telescopic arm) retracted state under, it is open state, when next section telescopic arm reaches the operating position of needs, it Locking state is in lock pin position hole 8.4 corresponding in next section telescopic arm.Advantageously, lock pin 8.2 is opened using key Structure is closed, that is, is in lock position after pressing, after pressing again, is in releasing position.In original state, lock pin 8.2 is in Lockup state.
Advantageously, being provided with 4 lock pin position holes 8.4 on each telescopic arm referring to Fig. 5 a or 5b.To each Different relative telescopic strokes between the corresponding adjacent expansion arm in lock pin position hole 8.4.Advantageously, 4 lock pin position holes 8.4 etc. Spacing setting, to correspond respectively to 1/4,2/4,3/4 and 4/4 stroke.Thus, it is possible to stretch for greater flexibility.For example, Different length is stretched out, or realize the extension elongation of setting in different ways.
It is understood that lock pin 8.2 is for a section telescopic arm under locking.Since eight section telescopic arms have been most ends The telescopic arm at end, without corresponding next section telescopic arm, so, no setting is required on eight section telescopic arms lock pin.
As shown in figure 5a and 5b, the lock pin position hole being arranged on odd number telescopic arm and even number telescopic arm is not at height Center, but deviate height split.In addition, the lock pin position hole being arranged on odd number telescopic arm and even number telescopic arm relative to Height split is symmetrical.
It corresponds, the lock pin 8.2 being arranged on odd number telescopic arm and even number telescopic arm is not at the middle part of height Place, but deviate height split.In addition, the lock pin 8.2 being arranged on odd number telescopic arm and even number telescopic arm is relative to height Split is symmetrical.
Referring to Fig. 3, lock pin 3.3 is provided on side slideway.The function of lock pin 3.3 is similar with the function of lock pin 8.2.Its For one section telescopic arm 4 of locking relative to side slideway or the telescopic location of basic arm 3.That is, can be by a section telescopic arm 4 Regard next section telescopic arm of basic arm 3 as.
Lock pin 8.2 and lock pin 3.3 are driven by the bolt driving mechanism being arranged on respective drive arm.The bolt driving machine Structure includes a bolt mechanism 1.5 of bolt mechanism 1.4, three of bolt mechanism 1.3, two and four bolt mechanisms 1.6.Each tool The corresponding lock pin position hole 8.4 of the bolt mechanism of body position.
Advantageously, position sensor 1.7 is provided on actuating arm, for incuding position of the actuating arm in slideway. There is provided signal for extension and contraction control program, guarantee the invention telescoping mechanism reliable in action, effectively.
Preferably, the multi-stage expansion mechanism further comprises initial position lockable mechanism, for locking corresponding telescopic arm Only in initial position, the initial position lockable mechanism includes:
Single original position lock pin 3.10, can move between releasing position and multiple lock positions;
Locking hole (the i.e. starting location hole being arranged at root is closed in each telescopic arm (such as five section telescopic arms 8) 8.6);And
Lock pin driving unit 3.6 in situ is used for the original position lock pin according to the order-driven of controller and is discharging Movement between position and multiple lock positions.
The releasing position of lock pin 3.10 in situ allows all telescopic arms to do stretching motion relative to basic arm 3;It is selecting Fixed lock position, the selected telescopic arm of locking and whole telescopic arms outside it, and the whole of release position in the inner is flexible Arm.For example, the height that lock pin 3.10 in situ raises upward is minimum, only one section telescopic arm 4 of locking in the first lock position; In the second lock position, the height that lock pin 3.10 in situ raises upward increases, one section telescopic arm 4 of locking and two section telescopic arms 5; In third lock position, the height that lock pin 3.10 in situ raises upward is further increased, and one section telescopic arm 4 of locking, two sections are stretched Contracting arm 5 and three section telescopic arms 6.
And so on, finally, in the 8th lock position, the height that lock pin 3.10 in situ raises upward reaches maximum, wears The starting location hole being arranged on all telescopic arms is crossed, all telescopic arms are locked at initial position, i.e., the position that do not stretch out.
The present invention also provides a kind of engineering machinery, the engineering machinery includes multi-stage expansion mechanism as described above.
In the multi-stage expansion mechanism of invention, for driving the telescopic arm to do stretching motion relative to the basic arm The outside of basic arm is arranged in driving device.To avoid the disadvantage that arrangement telescoping mechanism occupied space is big in arm, and have Have the advantages that manufacture and it is easy to maintenance.
The deployment step of multi-stage expansion mechanism of the present invention is illustrated below.In following example, expansion Innermost telescopic arm is first unfolded to be successively unfolded from inside to outside in sequence:Eight section telescopic arms 11.
1, work starts, and following instruction is first inputted to control system:Which stretched out from eight section telescopic arms to telescopic arm, often It saves 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 section telescopic arms Not relative telescopic directly stretches since other telescopic arms, for example, directly stretching out from six section telescopic arms.
2, the connector 1.1 (arm pin mechanism) of respective drive arm crosses out, the company of arm pin mechanism 1.1 and eight section telescopic arms Socket part (plates 8.1) clamps, thus, it is possible to which the power of driving device is transferred to eight section telescopic arms.With eight section telescopic arm (even numbers Telescopic arm) corresponding actuating arm is upper left actuating arm 1b and upper right actuating arm 2b.
3, lock pin 3.10 in situ is first contracted to corresponding gear, i.e., shelves corresponding with current kinetic joint arm (eight section telescopic arms) Position.Guarantee that eight section telescopic arms 11 are detached from from lock pin 3.10 in situ, that is, eight section telescopic arms 11 is allowed to stretch out.Remaining telescopic arm is then gone back In the lockup state by 3.10 locking of lock pin in situ, guarantee that other telescopic arms are not stretched out with eight section telescopic arms 11.
4, upper left actuating arm 1b and upper right actuating arm 2b simultaneously operation (stretching, extension), driving eight section telescopic arms 11 stretching, extension, reaches The travel position of setting.
5, the position corresponding with the setting travel position of control system instruction upper left actuating arm 1b and upper right actuating arm 2b Bolt mechanism movement, makes the eight section telescopic arm 11 of lock pin locking of seven section telescopic arms 10, guarantees to correspond to in eight section telescopic arms 11 Lock pin position hole be in locking state.Prevent eight section telescopic arms 11 flexible relative to seven section telescopic arms 10.
6, lock pin 3.10 in situ shrinks a gear again, i.e., shelves corresponding with current kinetic joint arm (seven section telescopic arms) Position.Guarantee that seven section telescopic arms 10 are detached from from lock pin 3.10 in situ, that is, seven section telescopic arms 10 is allowed to stretch out.Remaining telescopic arm is then gone back In the lockup state by 3.10 locking of lock pin in situ, guarantee that other telescopic arms are not stretched out with seven section telescopic arms 10.
7, the connector 1.1 (arm pin mechanism) of actuating arm corresponding with seven section telescopic arms (odd number telescopic arm) is laterally stretched Out, the interconnecting piece (plates 8.1) of arm pin mechanism 1.1 and seven section telescopic arms 10 clamps, thus, it is possible to which the power of driving device is passed It is handed to seven section telescopic arms 10.Actuating arm corresponding with seven section telescopic arms 10 (it is even number telescopic arm) be lower-left actuating arm 1a and Bottom right actuating arm 2a.
At the same time, the connector 1.1 of upper left actuating arm 1b and upper right actuating arm 2b are withdrawn, that is to say, that arm pin mechanism It is detached from eight section telescopic arms 11.
8, lower-left actuating arm 1a and bottom right actuating arm 2a simultaneously operation (stretching, extension), driving seven section telescopic arms 10 stretching, extension, reaches The travel position of setting
Meanwhile upper left actuating arm 1b and upper right actuating arm 2b are shunk, arm pin mechanism reaches its 1.1 face six of arm pin mechanism Stop shrinking when saving the position of the interconnecting piece of telescopic arm 9.
9, the position corresponding with the setting travel position of control system instruction lower-left actuating arm 1a and bottom right actuating arm 2a Bolt mechanism movement, makes the seven section telescopic arm 10 of lock pin locking of six section telescopic arms 9, guarantees corresponding in seven section telescopic arms 10 Lock pin position hole is in locking state.Prevent seven section telescopic arms 10 from stretching relative to six section telescopic arms 9
10, lock pin 3.10 in situ shrinks a gear again, i.e., shelves corresponding with current kinetic joint arm (six section telescopic arms) Position.Guarantee that six section telescopic arms 9 are detached from from lock pin 3.10 in situ, that is, six section telescopic arms 9 is allowed to stretch out.Remaining telescopic arm is then also located In the lockup state by 3.10 locking of lock pin in situ, guarantee that other telescopic arms are not stretched out with six section telescopic arms 9.
11, and so on, other telescopic arms are unfolded in a manner of odd-even alternation.
The process of contraction is the inverse process of the above process.It is not repeating herein.
It is last it is to be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.This The those of ordinary skill in field should understand that:It is possible to modify the technical solutions described in the foregoing embodiments or right Part of technical characteristic is equivalently replaced;These are modified or replaceed, and it does not separate the essence of the corresponding technical solution originally Invent the spirit and scope of each embodiment technical solution.

Claims (9)

1. a kind of multi-stage expansion mechanism, including:
Basic arm;
At least two telescopic arms, telescopically nested setting, and at least two telescopic arm is telescopically set It sets in the basic arm;
First driving device is used to that odd number telescopic arm to be driven to do stretching motion relative to the basic arm;And
Second driving device is used to that even number telescopic arm to be driven to do stretching motion relative to the basic arm, which is characterized in that
The first driving device and the second driving device are arranged except the telescopic arm, the first driving device and second Driving device includes actuating arm, and the actuating arm includes driving arm body;
Interconnecting piece is being fixedly installed towards the side of the driving arm body on each telescopic arm;
The driving arm body is provided with connector in the side towards the telescopic arm, and the connector setting is described flexible The end of arm, and can transverse movement, to be engaged with the interconnecting piece of selected telescopic arm, and drive the selected telescopic arm to do and stretch Contracting movement.
2. multi-stage expansion mechanism as described in claim 1, which is characterized in that the basic arm includes:
Main skid, the telescopic arm are arranged in the main skid;And
The outside of the main skid is arranged in side slideway, and the actuating arm further includes telescopic oil cylinder, and the actuating arm is arranged In the side slideway, wherein the telescopic oil cylinder is for driving the driving arm body to carry out stretching motion.
3. multi-stage expansion mechanism as claimed in claim 2, which is characterized in that
The interconnecting piece is plates, telescopic direction of the plates perpendicular to the telescopic arm;The connector is with card Slot, with the mating plates.
4. the multi-stage expansion mechanism as described in any one of claim 2-3, which is characterized in that
The quantity of the side slideway is four, and is symmetrical set except the main skid,
The either above or below of the actuating arm that second driving device is arranged in of the first driving device, described first drives Dynamic device and the actuating arm of second driving device include the first actuating arm being symmetrical set and the second driving Arm, first actuating arm and the second actuating arm are respectively disposed in the side slideway, first actuating arm and second Actuating arm synchronizes driving to selected telescopic arm, wherein each telescopic arm is arranged symmetrically, and there are two interconnecting pieces.
5. multi-stage expansion mechanism as claimed in any one of claims 1-3, which is characterized in that be arranged between adjacent expansion arm It is mutually locked positioning mechanism, in the lockup state for being mutually locked positioning mechanism, prevents the relative telescopic of adjacent expansion arm Movement allows the relative telescoping movement of adjacent expansion arm in the release conditions for being mutually locked positioning mechanism.
6. multi-stage expansion mechanism as claimed in claim 5, which is characterized in that the positioning mechanism that is mutually locked includes that setting exists Lock pin on previous telescopic arm, and the lock pin position hole being arranged on latter telescopic arm, and control stretching for the lock pin Out with the bolt mechanism of contractile motion.
7. multi-stage expansion mechanism as claimed in claim 6, which is characterized in that the lock pin closes on the end of corresponding telescopic arm Setting, the quantity in the lock pin position hole is multiple, and is uniformly distributed on the length direction of corresponding telescopic arm.
8. multi-stage expansion mechanism as claimed in any one of claims 1-3, which is characterized in that further comprise initial position lock Locking mechanism, for corresponding telescopic arm to be locked at initial position, the initial position lockable mechanism includes:
Single original position lock pin, can move between releasing position and multiple lock positions;
The locking hole being arranged at root is closed in each telescopic arm;And
Lock pin driving unit in situ is used for the original position lock pin according to the order-driven of controller in releasing position and more Movement between a lock position,
Wherein, the releasing position of lock pin in situ, allows all telescopic arms to do stretching motion relative to basic arm;What is selected Lock position, the selected telescopic arm of locking and whole telescopic arms outside it, and the whole telescopic arms of release position in the inner.
9. a kind of engineering machinery, which is characterized in that including multi-stage expansion mechanism such as of any of claims 1-8.
CN201610797901.7A 2016-08-31 2016-08-31 A kind of multi-stage expansion mechanism and engineering machinery Active CN106219421B (en)

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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
CN110255399B (en) * 2019-06-17 2020-09-08 徐州徐工液压件有限公司 Suspended slide climbing structure for telescopic hydraulic cylinder of super-tonnage crane

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Patentee before: BEIQI FOTON MOTOR Co.,Ltd.