CN103407912B - Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm - Google Patents
Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm Download PDFInfo
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- CN103407912B CN103407912B CN201310380406.2A CN201310380406A CN103407912B CN 103407912 B CN103407912 B CN 103407912B CN 201310380406 A CN201310380406 A CN 201310380406A CN 103407912 B CN103407912 B CN 103407912B
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Abstract
The invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescoping method of the single-cylinder plug pin type telescopic arm. The single-cylinder plug pin type telescopic arm comprises a basic arm and at least one section of telescopic arm which is sleeved in the basic arm, wherein coaxial central holes are formed in the tails of the telescopic arms; a telescopic oil cylinder is arranged in the central holes and comprises a cylinder rod and a cylinder barrel; at least two cylinder heads are fixedly sleeved outside the cylinder barrel in the longitudinal direction; at least three arm pin holes are respectively formed in the basic arm and the telescopic arm in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the invention adopts the telescopic oil cylinder and the at least two cylinder heads; each cylinder head can be used for locking and unlocking the telescopic oil cylinder and any one telescopic arm; in a relay manner, the telescopic arms stretch or shrink; telescoping of the single-cylinder plug pin type telescopic arm is realized; the length of the oil cylinder is reduced; the cylinder diameter and the rod diameter of the oil cylinder are reduced; the cost of the oil cylinder is lowered; the loading weight is reduced; the hoisting capability is improved; the design capability of the crane is improved.
Description
Technical field
The present invention relates to engineering machinery field, be specifically related to a kind of single-cylinder bolt type telescopic boom, comprise the telescopic method of the hoisting crane of this single-cylinder bolt type telescopic boom and this single-cylinder bolt type telescopic boom thereof.
Background technology
Single cylinder bolt system is that one is built in crane arm, realize a kind of device of the Telescopic of crane arm, primarily of telescopic boom and telescopic oil cylinder composition, comprising arm pin, arm pin-and-hole, cylinder head, cylinder pin, cylinder bar, cylinder barrel, dovetail furrow, detector switch and other auxiliary facilities, be that arm realizes flexible main function components.Cylinder head is positioned at the cylinder barrel of telescopic oil cylinder or a certain position of piston rod, realizing fixing and the device be separated, mainly comprising arm pin actuating device, cylinder pin, driving oil cylinder, position probing block etc. for controlling between telescopic oil cylinder and telescopic boom.Cylinder pin is the pin on the cylinder head of telescopic oil cylinder, and it act as and telescopic oil cylinder and telescopic boom is locked together, and in existing product, each cylinder head has 2 or 4 cylinder pins usually.Arm pin is the pin on telescopic boom, and it act as and is locked together by each joint telescopic boom, and in existing product, each telescopic boom has 1 or 2 arm pins usually.Arm pin actuating device is for drop-down or upper push arm pin, the device that makes each telescopic boom unlock.Detector switch is that arm position for detecting each joint telescopic boom, cylinder pin or arm pin unlock and the sensor of locking state.
As shown in Figure 1a, a kind of single-cylinder bolt type telescopic boom, this telescopic boom only has a telescopic oil cylinder, telescopic oil cylinder comprises can the cylinder barrel 1 of movement, the outside of cylinder barrel 1 is set with 1 cylinder head 2 in the vertical regularly, and the both sides of this cylinder head 2 are provided with two cylinder pins 3 accordingly, the center shaft of these two cylinder pins 3 and the center shaft of this telescopic oil cylinder coplanar; This telescopic oil cylinder can selectively lock or discharge the relative position of itself and arbitrary joint telescopic boom 4 by cylinder pin 3.In addition, between adjacent each telescopic boom 4 and basic arm 5(directly with the arm of crane pivot joint) and first segment telescopic boom between be equipped with arm pin 6, the relative position between adjacent telescopic boom 4 and between basic arm 5 and first segment telescopic boom can pass through this arm pin 6 and selectively lock or discharge.
As shown in Fig. 1 a-1g, the mode of stretching out of the single-cylinder bolt type telescopic boom of prior art is: first this telescopic oil cylinder can lock with joint telescopic boom last, then joint telescopic boom last and joint telescopic boom second from the bottom are discharged, now joint telescopic boom last can be taken out of by this telescopic oil cylinder; Itself and joint telescopic boom second from the bottom relock after arriving desired location by joint telescopic boom last, regain telescopic oil cylinder and itself and joint telescopic boom second from the bottom are locked, then joint telescopic boom second from the bottom and joint telescopic boom third from the bottom are unlocked, now namely joint telescopic boom second from the bottom can be taken out of by this telescopic oil cylinder, and itself and joint telescopic boom third from the bottom relock after arriving desired location by joint telescopic boom second from the bottom.The rest may be inferred just can make each joint telescopic boom stretch out successively.Certainly, at any time, any one is saved telescopic boom or is locked by arm pin and other telescopic booms, or is locked by cylinder pin and telescopic oil cylinder.
The stretch mode of existing single cylinder bolt-type, the stroke of its telescopic oil cylinder is greater than the range often saving semi-girder, can by one joint semi-girder from full reduced state disposable extend 100% entirely stretch state.
The single-cylinder bolt type telescopic boom of prior art has following shortcoming:
1, for guaranteeing that oil cylinder can realize so large stroke, and can promote stable the stretching out of telescopic boom, need oil cylinder bar and cylinder barrel very thick very long, need more fluid, hydraulic efficiency pressure system need configure larger fuel tank simultaneously, to meet flexible needs.This causes oil cylinder cost very high, and the weight of crane is excessive, indirectly causes chassis weight also to rise, limits lifting performance, approaches the minimum requirements of national standard, has a great impact for product competition advantage.
2, cost is high.What telescopic oil cylinder stroke demand fulfillment often saved telescopic boom stretches out stroke, causes telescopic oil cylinder stroke long.The cylinder bar of long-cylinder and the processing difficulties of cylinder barrel, need special Fabricating machinery and the processing conditions of specialty, cause telescopic oil cylinder cost also significantly to improve.
3, weight is large.Because telescopic oil cylinder is long, and needing to bear larger axial compression load, producing longitudinal bending for preventing telescopic oil cylinder, meet the requirement of stability, need thicker cylinder rod footpath, cylinder diameter and material thickness, also need the guiding distance more grown, telescopic oil cylinder weight is increased.Simultaneously for meeting the flexible of Long Distances oil cylinder, needing the fuel tank configuring large-size, the weight of hoisting crane also can be caused to increase.
Because of national communication regulation, have clear stipulaties to the weight of upper road vehicles, therefore the increase of weight can cause rubber tyre gantry crane design more complicated, and vehicle road toll also can increase thereupon.
4, poor stability.The telescopic oil cylinder of Long travel, after cylinder bar stretches out, because own wt is excessive, causes cylinder bar and cylinder barrel middle interconnecting piece position to occur the phenomenon of downwarp, causes the increase of telescopic oil cylinder friction force.Simultaneously by the impact of hydraulic oil modulus of elasticity, oil cylinder stretches out the second half section, there will be the situation of climbing, causes jitter phenomenon.
Summary of the invention
The object of the invention is the telescopic method proposing a kind of single-cylinder bolt type telescopic boom, comprise the hoisting crane of this single-cylinder bolt type telescopic boom and this single-cylinder bolt type telescopic boom thereof, this single-cylinder bolt type telescopic boom efficiently solves the problems referred to above, structure is simple, easy to operate.
For achieving the above object, the invention provides following technical scheme:
A kind of single-cylinder bolt type telescopic boom, comprise basic arm and be set at least one joint telescopic boom in basic arm, the afterbody of telescopic boom is all provided with coaxial centre hole, is provided with telescopic oil cylinder in centre hole;
Telescopic oil cylinder comprises cylinder bar and cylinder barrel, cylinder bar is connected to the root hinge of basic arm, the outside of cylinder barrel is set with at least 2 cylinder heads in the vertical regularly, the left and right sides of each cylinder head is all provided with the cylinder pin that can stretch, the internal perisporium of the centre hole of the afterbody of telescopic boom is equipped with cylinder pin-and-hole, cylinder barrel can be selectively fixedly connected with arbitrary telescopic boom with the cooperation of cylinder pin-and-hole by cylinder pin;
Basic arm and telescopic boom are all provided with at least 3 arm pin-and-holes in the vertical, often save the quantity at least many one of the number ratio cylinder head of the arm pin-and-hole of arm, the periphery wall of telescopic boom is all provided with the arm pin that can stretch, between basic arm with first segment telescopic boom and can by arm pin and coordinating of arm pin-and-hole realizing locking or discharging between adjacent telescopic boom.
In one preferably or alternatively embodiment, often save many one of the quantity of the number ratio cylinder head of the arm pin-and-hole of arm.
In one preferably or alternatively embodiment, the outside of cylinder barrel is set with 2 cylinder heads in the vertical regularly, and basic arm and telescopic boom are all provided with 3 arm pin-and-holes in the vertical.
In one preferably or alternatively embodiment, the both sides of cylinder head are provided with cylinder pin mounting hole, and cylinder pin is installed in cylinder pin mounting hole.
In one preferably or alternatively embodiment, arm pin is driven by two arm pin oil cylinders, and arm pin oil cylinder is arranged in the arm pin oil cylinder mounting hole of cylinder head, and arm pin oil cylinder lays respectively at the both sides of cylinder head.
In one preferably or alternatively embodiment, cylinder head is cuboid, and have its through center mounting hole in the middle part of it, the internal diameter of center mounting hole is equal with the external diameter of cylinder barrel, so that cylinder barrel can pass center mounting hole.
Present invention also offers following technical scheme:
A kind of hoisting crane, hoisting crane comprises single-cylinder bolt type telescopic boom as above.
Present invention also offers following technical scheme:
A telescopic method for single-cylinder bolt type telescopic boom as above,
The cylinder pin of retraction cylinder head, mobile cylinder barrel, when the cylinder pin of the first cylinder head of cylinder barrel arrives the position of the cylinder pin-and-hole of joint telescopic boom last, the cylinder pin of the first cylinder head inserts in the cylinder pin-and-hole of joint telescopic boom last, realizes the locking of cylinder barrel and joint telescopic boom last;
To leave behind the arm pin of joint telescopic boom last, realize the release of joint telescopic boom last and joint telescopic boom second from the bottom;
Joint telescopic boom last is taken out of by cylinder barrel, when the arm pin of joint telescopic boom last arrives the position of the second arm pin-and-hole of joint telescopic boom second from the bottom, the arm pin of joint telescopic boom last inserts in the second arm pin-and-hole of joint telescopic boom second from the bottom, realizes the locking of joint telescopic boom last and joint telescopic boom second from the bottom;
The remaining cylinder head of cylinder barrel carries out successively according to the control step of the first cylinder head, realizes stretching out completely of joint telescopic boom last;
Remaining telescopic boom stretches out successively according to the step of stretching out of joint telescopic boom last, achieves stretching out of all telescopic booms.
In one preferably or alternatively embodiment, the cylinder pin of retraction cylinder head, mobile cylinder barrel, when the cylinder pin of the cylinder head last of cylinder barrel arrives the position of the cylinder pin-and-hole of first segment telescopic boom, the cylinder pin of cylinder head last inserts in the cylinder pin-and-hole of first segment telescopic boom, realizes the locking of cylinder barrel and first segment telescopic boom;
To leave behind the arm pin of first segment telescopic boom, realize the release of basic arm and first segment telescopic boom;
First segment telescopic boom is taken back by cylinder barrel, and when the arm pin of first segment telescopic boom arrives the position of the arm pin-and-hole second from the bottom of basic arm, the arm pin of first segment telescopic boom inserts in the arm pin-and-hole second from the bottom of basic arm, realizes the locking of basic arm and first segment telescopic boom;
The remaining cylinder head of cylinder barrel carries out successively according to the control step of cylinder head last, achieves the retraction completely of first segment telescopic boom;
Remaining telescopic boom is retracted successively according to the retraction step of first segment telescopic boom, achieves the retraction of all telescopic booms.
In one preferably or alternatively embodiment, the cylinder pin of all cylinder heads all links, so that cylinder pin synchronously stretches out or synchronously retracts.
Based on the arbitrary technical scheme in technique scheme, the embodiment of the present invention at least can produce following technique effect:
Due to single-cylinder bolt type telescopic boom provided by the present invention, adopt a telescopic oil cylinder and at least 2 cylinder heads, each cylinder head can both realize the locked and unblock of telescopic oil cylinder and arbitrary telescopic boom, by the mode of delivering in relays, telescopic boom is stretched out or retracts, realize the flexible of single-cylinder bolt type telescopic boom, shorten length of oil cylinder, reduce oil cylinder cylinder diameter and bar footpath, reduce oil cylinder cost, fuel tank size can be reduced simultaneously, reduce weight of getting on the bus, hoisting ability, makes the design of hoisting crane have and more plays space.
In addition, at least also there is following advantage in the preferred technical solution of the present invention:
1, cost is low.Telescopic boom segmentation stretched out or retract, stroke needed for telescopic oil cylinder reduces, so telescopic oil cylinder is also shorter.Cylinder barrel and the cylinder bar of short oil cylinder are also shorter, process more convenient, also reduce the requirement of Fabricating machinery and processing conditions, so telescopic oil cylinder cost also declines to a great extent.
2, weight is little.Because telescopic oil cylinder shortens, own wt declines.Because arm itself is constant, so the axial compression load born is identical, now can suitably reduce cylinder rod footpath, cylinder diameter and material thickness, shorten the guiding distance of telescopic oil cylinder, also can prevent telescopic oil cylinder from producing longitudinal bending, meet the requirement of stability equally, reduce telescopic oil cylinder weight.In addition, simultaneously for meeting the flexible of short travel oil cylinder, the fuel tank of reduced size can be configured, alleviate hoisting crane weight.Due to the reduction of weight, designer will have more design space.
3, stability is better.Oil cylinder stroke shortens, and make its processing conditions better, surface finish is higher, and friction force is less.In addition, telescopic oil cylinder is less by the impact of hydraulic oil modulus of elasticity, can alleviate the situation of telescopic oil cylinder climbing, reduces jitterbug.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 a-1g be the single-cylinder bolt type telescopic boom of prior art stretch out process schematic, wherein Fig. 1 a is full reduced view, Fig. 1 b is that cylinder pin is retracted, find the view of the cylinder pin-and-hole of joint telescopic boom last, Fig. 1 c is the cylinder pin-and-hole finding joint telescopic boom last, insert cylinder pin, to leave behind the view of arm pin, Fig. 1 d is the view that the arm pin of joint telescopic boom last inserts the arm pin-and-hole of joint telescopic boom second from the bottom, Fig. 1 e is that cylinder pin is retracted, telescopic oil cylinder is retracted, find the view of the cylinder pin-and-hole of joint telescopic boom second from the bottom, Fig. 1 f is the cylinder pin-and-hole finding joint telescopic boom second from the bottom, insert cylinder pin, to leave behind the view of arm pin, Fig. 1 g is the view that the arm pin of joint telescopic boom second from the bottom inserts the arm pin-and-hole of joint telescopic boom third from the bottom,
Fig. 2 a-2k be the preferred embodiment of single-cylinder bolt type telescopic boom of the present invention stretch out process schematic, wherein Fig. 2 a is full reduced view, Fig. 2 b is that cylinder pin is retracted, find the view of the cylinder pin-and-hole of joint telescopic boom last, Fig. 2 c is the cylinder pin-and-hole finding joint telescopic boom last, insert the first cylinder pin, to leave behind the view of arm pin, Fig. 2 d is the view that the arm pin of joint telescopic boom last inserts the second arm pin-and-hole of joint telescopic boom second from the bottom, Fig. 2 e is the cylinder pin-and-hole finding joint telescopic boom last, insert the second cylinder pin, to leave behind the view of arm pin, Fig. 2 f is the view that the arm pin of joint telescopic boom last inserts the second arm pin-and-hole of joint telescopic boom second from the bottom, Fig. 2 g is that cylinder pin is retracted, find the view of the cylinder pin-and-hole of joint telescopic boom second from the bottom, Fig. 2 h is the cylinder pin-and-hole finding joint telescopic boom second from the bottom, insert the first cylinder pin, to leave behind the view of arm pin, Fig. 2 i is the view that the arm pin of joint telescopic boom second from the bottom inserts the second arm pin-and-hole of joint telescopic boom third from the bottom, Fig. 2 j is the view that the arm pin of joint telescopic boom second from the bottom inserts the 3rd arm pin-and-hole of joint telescopic boom third from the bottom, Fig. 2 k is for entirely to stretch view,
Fig. 3 a-3m is the retraction process schematic of the preferred embodiment of single-cylinder bolt type telescopic boom of the present invention, wherein Fig. 3 a is for entirely to stretch view, Fig. 3 b is that cylinder pin is retracted, find the view of the cylinder pin-and-hole of Section of five telescopic boom reciprocal, Fig. 3 c is the cylinder pin-and-hole finding Section of five telescopic boom reciprocal, insert the second cylinder pin, to leave behind the view of arm pin, Fig. 3 d is the view that telescopic oil cylinder band Section of five telescopic boom reciprocal is retracted, Fig. 3 e is the view of the second arm pin-and-hole of the arm pin insertion basic arm of Section of five telescopic boom reciprocal, Fig. 3 f is that cylinder pin is retracted, find the view of the cylinder pin-and-hole of Section of five telescopic boom reciprocal, Fig. 3 g is the cylinder pin-and-hole finding Section of five telescopic boom reciprocal, insert the first cylinder pin, to leave behind the view of arm pin, Fig. 3 h is the view of the first arm pin-and-hole of the arm pin insertion basic arm of Section of five telescopic boom reciprocal, Fig. 3 i is the cylinder pin-and-hole finding fourth from the last to save telescopic boom, insert the second cylinder pin, to leave behind the view of arm pin, Fig. 3 j is the view of the second arm pin-and-hole of arm pin insertion Section of five telescopic boom reciprocal of fourth from the last joint telescopic boom, Fig. 3 k is the cylinder pin-and-hole finding fourth from the last to save telescopic boom, insert the first cylinder pin, to leave behind the view of arm pin, Fig. 3 l is the view of the first arm pin-and-hole of arm pin insertion Section of five telescopic boom reciprocal of fourth from the last joint telescopic boom, Fig. 3 m is full reduced view.
Detailed description of the invention
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
It should be noted that: any technical characteristic in the present embodiment, any technical scheme is all one or more in the technical characteristic of plurality of optional or optional technical scheme, cannot exhaustive all alternative technical characteristics of the present invention and alternative technical scheme in order to describe succinct to need in presents, also the embodiment being not easy to each technical characteristic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characteristic in the present embodiment and any technical scheme all do not limit the scope of the invention, protection scope of the present invention should comprise those skilled in the art and not pay the thinkable any alternate embodiments of creative work.
Hereafter convenient in order to describe, hereinafter alleged "left", "right", " on ", left and right, the upper and lower of D score and accompanying drawing itself is to consistent.
At least 2 cylinder heads refer to the cylinder head of more than 2 or 2.
Hereafter convenient in order to describe, at least 2 cylinder heads as reference, distinguish cylinder head with the first cylinder head, the second cylinder head, the 3rd cylinder head (by that analogy) from the direction from left to right accompanying drawing respectively; At least 2 cylinder heads as reference, distinguish cylinder head respectively, but the size of all cylinder heads, structure, material are all identical from the direction from right to left accompanying drawing with cylinder head last, cylinder head second from the bottom, cylinder head third from the bottom (by that analogy).Casehistory is as follows: when cylinder head has 2, from the direction from left to right accompanying drawing as reference, 2 cylinder heads are distinguished respectively with the first cylinder head, the second cylinder head, from the direction from right to left accompanying drawing as reference, 2 cylinder heads are distinguished respectively with cylinder head last, cylinder head second from the bottom, that is the first cylinder head is exactly cylinder head second from the bottom, and the second cylinder head is exactly cylinder head last.When cylinder head has 5, from the direction from left to right accompanying drawing as reference, respectively with the first cylinder head, second cylinder head, 3rd cylinder head, 4th cylinder head, 5 cylinder heads distinguished by 5th cylinder head, from the direction from right to left accompanying drawing as reference, respectively with cylinder head last, cylinder head second from the bottom, cylinder head third from the bottom, fourth from the last cylinder head, 5 cylinder heads distinguished by 5th cylinder head reciprocal, that is the first cylinder head is exactly the 5th cylinder head reciprocal, second cylinder head is exactly fourth from the last cylinder head, 3rd cylinder head is exactly cylinder head third from the bottom, 4th cylinder head is exactly cylinder head second from the bottom, 5th cylinder head is exactly cylinder head last.
At least 3 arm pin-and-holes refer to the arm pin-and-hole of more than 3 or 3.
Hereafter convenient in order to describe, at least 3 arm pin-and-holes as reference, distinguish arm pin-and-hole with the first arm pin-and-hole, the second arm pin-and-hole, the 3rd arm pin-and-hole (by that analogy) from the direction from left to right accompanying drawing respectively; At least 3 arm pin-and-holes as reference, distinguish arm pin-and-hole with arm pin-and-hole last, arm pin-and-hole second from the bottom, arm pin-and-hole third from the bottom (by that analogy) from the direction from right to left accompanying drawing respectively, and the arm pin-and-hole often saving telescopic boom arranges that rule is identical.Casehistory is as follows: when arm pin-and-hole has 3, from the direction from left to right accompanying drawing as reference, 3 arm pin-and-holes are distinguished respectively with the first arm pin-and-hole, the second arm pin-and-hole, the 3rd arm pin-and-hole, from the direction from right to left accompanying drawing as reference, 3 arm pin-and-holes are distinguished respectively with arm pin-and-hole last, arm pin-and-hole second from the bottom, arm pin-and-hole third from the bottom, that is the first arm pin-and-hole is exactly arm pin-and-hole third from the bottom, second arm pin-and-hole is exactly arm pin-and-hole second from the bottom, and the 3rd arm pin-and-hole is exactly arm pin-and-hole last.When arm pin-and-hole has 5, from the direction from left to right accompanying drawing as reference, respectively with the first arm pin-and-hole, second arm pin-and-hole, 3rd arm pin-and-hole, 4th arm pin-and-hole, 5th arm pin-and-hole distinguishes 5 arm pin-and-holes, from the direction from right to left accompanying drawing as reference, respectively with arm pin-and-hole last, arm pin-and-hole second from the bottom, arm pin-and-hole third from the bottom, fourth from the last arm pin-and-hole, 5th arm pin-and-hole reciprocal distinguishes 5 arm pin-and-holes, that is the first arm pin-and-hole is exactly the 5th arm pin-and-hole reciprocal, second arm pin-and-hole is exactly fourth from the last arm pin-and-hole, 3rd arm pin-and-hole is exactly arm pin-and-hole third from the bottom, 4th arm pin-and-hole is exactly arm pin-and-hole second from the bottom, 5th arm pin-and-hole is exactly arm pin-and-hole last.
Hereafter convenient in order to describe, at least one joint telescopic boom as reference, distinguishes telescopic boom with first segment telescopic boom, second section telescopic boom, Section of three telescopic boom (by that analogy) from the direction from outside to inside accompanying drawing respectively; At least one joint telescopic boom from the direction from inside to outside accompanying drawing as reference, telescopic boom is distinguished respectively with joint telescopic boom last, joint telescopic boom second from the bottom, joint telescopic boom third from the bottom (by that analogy), but first segment telescopic boom, second section telescopic boom, Section of three telescopic boom (by that analogy) just radial dimension difference, structure, material are identical.The following situation of radial dimension demand fulfillment of multi-stage telescopic arms: Section of three telescopic boom can be located in the inner chamber of second section telescopic boom, and second section telescopic boom can be located in the inner chamber of first segment telescopic boom, and first segment telescopic boom can be located in the inner chamber of basic arm.Casehistory is as follows: when telescopic boom has 2 joint, from the direction from outside to inside accompanying drawing as reference, respectively with first segment telescopic boom, second section telescopic boom distinguishes 2 joint telescopic booms, from the direction from inside to outside accompanying drawing as reference, respectively with joint telescopic boom last, joint telescopic boom second from the bottom distinguishes 2 joint telescopic booms, that is first segment telescopic boom is exactly joint telescopic boom second from the bottom, second section telescopic boom is exactly joint telescopic boom last, the following situation of radial dimension demand fulfillment of 2 joint telescopic booms: second section telescopic boom can be located in the inner chamber of first segment telescopic boom, first segment telescopic boom can be located in the inner chamber of basic arm.When telescopic boom has 5 joint, from the direction from outside to inside accompanying drawing as reference, respectively with first segment telescopic boom, second section telescopic boom, section three, telescopic boom, section four, telescopic boom, section five, telescopic boom distinguishes 5 joint telescopic booms, from the direction from inside to outside accompanying drawing as reference, respectively with joint telescopic boom last, joint telescopic boom second from the bottom, joint telescopic boom third from the bottom, fourth from the last joint telescopic boom, Section of five telescopic boom reciprocal distinguishes 5 joint telescopic booms, that is first segment telescopic boom is exactly Section of five telescopic boom reciprocal, second section telescopic boom is exactly fourth from the last joint telescopic boom, section three, telescopic boom is exactly joint telescopic boom third from the bottom, section four, telescopic boom is exactly joint telescopic boom second from the bottom, section five, telescopic boom is exactly joint telescopic boom last, the following situation of radial dimension demand fulfillment of 5 joint telescopic booms: Section of five telescopic boom can be located in the inner chamber of Section of four telescopic boom, section four, telescopic boom can be located in the inner chamber of Section of three telescopic boom, section three, telescopic boom can be located in the inner chamber of second section telescopic boom, second section telescopic boom can be located in the inner chamber of first segment telescopic boom, first segment telescopic boom can be located in the inner chamber of basic arm.
If oil cylinder there are 2 cylinder heads, then often save the flexible of telescopic boom and be divided into 2 sections to carry out, the flexible of the last period be responsible for by the first cylinder head, and latter one section stretching be responsible for by the second cylinder head; If oil cylinder there are 3 cylinder heads, then stretching of telescopic boom the last period be responsible for by the first cylinder head, and the flexible of interlude be responsible for by the second cylinder head, and latter one section stretching be responsible for by the 3rd cylinder head; If oil cylinder has 4 or more cylinder head, then by that analogy.
As shown in Figure 2 a, a kind of single-cylinder bolt type telescopic boom, comprise basic arm 11 and be set in 5 joint telescopic booms in basic arm 11,5 joint telescopic booms are respectively joint telescopic boom 12 last, joint telescopic boom 13 second from the bottom, joint telescopic boom 14 third from the bottom, fourth from the last joint telescopic boom 15 and Section of five telescopic boom 16 reciprocal, the afterbody of 5 joint telescopic booms is all provided with coaxial centre hole, is provided with telescopic oil cylinder in centre hole; Telescopic oil cylinder comprises cylinder bar and cylinder barrel 17, cylinder bar is connected to the root hinge of basic arm, the outside of cylinder barrel 17 is set with 2 cylinder heads in the vertical regularly, 2 cylinder heads are respectively the first cylinder head 18 and the second cylinder head 19, the left and right sides of the first cylinder head 18 is all provided with the first cylinder pin 20 that can stretch, the left and right sides of the second cylinder head 19 is all provided with the second cylinder pin 21 that can stretch, the internal perisporium of the centre hole of the afterbody 27 of telescopic boom is equipped with cylinder pin-and-hole 22, and cylinder barrel 17 can be selectively fixedly connected with arbitrary telescopic boom with the cooperation of cylinder pin-and-hole by cylinder pin; Basic arm and telescopic boom are all provided with 3 arm pin-and-holes in the vertical, 3 arm pin-and-holes are respectively the first arm pin-and-hole 23, second arm pin-and-hole 24 and the 3rd arm pin-and-hole 25, the periphery wall of telescopic boom is all provided with the arm pin 26 that can stretch, between basic arm with first segment telescopic boom and can by arm pin and coordinating of arm pin-and-hole realizing locking or discharging between adjacent telescopic boom.
The fixed end of telescopic oil cylinder is connected to the root hinge of basic arm, and its movable end can be selectively fixedly connected with arbitrary telescopic boom by cylinder pin.The fixed end of telescopic oil cylinder is cylinder bar, and its movable end is cylinder barrel.
Cylinder pin is in the state of stretching out usually, is namely in state cylinder barrel and certain being saved telescopic boom and lock; When needing to unlock, cylinder pin can be promoted by cylinder pin oil cylinder (not shown) and make it retract, and then realize cylinder barrel and certain saves the unblock of telescopic boom.When needs relock cylinder pin and certain saves telescopic boom, can unload press operation to cylinder pin oil cylinder, now cylinder pin can stretch out again.
The both sides of the first cylinder head 18 are provided with the first cylinder pin mounting hole (not shown), and the first cylinder pin 20 is installed in the first cylinder pin mounting hole; The both sides of the second cylinder head 19 are provided with the second cylinder pin mounting hole (not shown), and the second cylinder pin 21 is installed in the second cylinder pin mounting hole.
Arm pin 26 is driven by two the first arm pin oil cylinder (not shown)s or two the second arm pin oil cylinder (not shown)s, first arm pin oil cylinder is arranged in the first arm pin oil cylinder mounting hole (not shown) of the first cylinder head 18, and the first arm pin oil cylinder lays respectively at the both sides of the first cylinder head 18; Second arm pin oil cylinder is arranged in the second arm pin oil cylinder mounting hole (not shown) of the second cylinder head 19, and the second arm pin oil cylinder lays respectively at the both sides of the second cylinder head 19.
Arm pin is arranged at the top of telescopic boom usually, and can move vertically, thus will lock between basic arm and first segment telescopic boom and between adjacent telescopic boom or unlock.The bottom of arm pin can snap in dovetail furrow, therefore, it is possible to driven by dovetail furrow and move in a generally vertical direction; Dovetail furrow is fixedly connected with arm pin oil cylinder, thus can be synchronized with the movement with arm pin oil cylinder.
Arm pin oil cylinder is arranged in the arm pin oil cylinder mounting hole of cylinder head, and its lower end is fixedly connected with cylinder head, and its upper end is fixedly connected with dovetail furrow.Cylinder head can stretch out with cylinder barrel or regain, and therefore, arm pin oil cylinder and dovetail furrow can move vertically in the inner chamber of telescopic boom; When being in different positions, dovetail furrow can from different arm pin phase clampings, thus can drive different arm pins stretch out or retract.
First cylinder head 18 and the second cylinder head 19 are all cuboid, and have its through center mounting hole in the middle part of it, the internal diameter of center mounting hole is equal with the external diameter of cylinder barrel 17, so that cylinder barrel 17 can pass center mounting hole.First cylinder head 18 and the second cylinder head 19 in a conventional manner (such as bolt) are fixed on the outside of cylinder barrel 17.
A kind of hoisting crane, hoisting crane comprises single-cylinder bolt type telescopic boom as above.
The other parts of hoisting crane can with reference to prior art, and the present invention no longer launches to describe.
A kind of telescopic method of single-cylinder bolt type telescopic boom as above, often save stretching out of telescopic boom and be all divided into two sections with retraction, stretching out of telescopic boom first half section be responsible for by first cylinder head 18, stretching out of telescopic boom second half section be responsible for by second cylinder head 19, stretches out order to be: joint telescopic boom last → joint telescopic boom second from the bottom → joint telescopic boom third from the bottom → fourth from the last joint telescopic boom → inverse Section of five telescopic boom
As shown in Fig. 2 a-2k, stretching out method is: the cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the first cylinder pin 20 of the first cylinder head 18 of cylinder barrel 17 arrives the position of the cylinder pin-and-hole of joint telescopic boom 12 last, first cylinder pin 20 of the first cylinder head 18 inserts in the cylinder pin-and-hole of joint telescopic boom 12 last, realizes the locking of cylinder barrel 17 and joint telescopic boom 12 last;
To leave behind the arm pin of joint telescopic boom 12 last, realize the release of joint telescopic boom 12 last and joint telescopic boom 13 second from the bottom;
Joint telescopic boom 12 last is taken out of by cylinder barrel 17, when the arm pin of joint telescopic boom 12 last arrives the position of the second arm pin-and-hole of joint telescopic boom 13 second from the bottom, the arm pin of joint telescopic boom 12 last inserts in the second arm pin-and-hole of joint telescopic boom 13 second from the bottom, realizes the locking of joint telescopic boom 12 last and joint telescopic boom 13 second from the bottom;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the second cylinder pin 21 of the second cylinder head 19 of cylinder barrel 17 arrives the position of the cylinder pin-and-hole of joint telescopic boom 12 last, second cylinder pin 21 of the second cylinder head 19 inserts in the cylinder pin-and-hole of joint telescopic boom 12 last, realizes the locking of cylinder barrel 17 and joint telescopic boom 12 last;
To leave behind the arm pin of joint telescopic boom 12 last, realize the release of joint telescopic boom 12 last and joint telescopic boom 13 second from the bottom;
Joint telescopic boom 12 last is taken out of by cylinder barrel 17, when the arm pin of joint telescopic boom 12 last arrives the position of the 3rd arm pin-and-hole of joint telescopic boom 13 second from the bottom, the arm pin of joint telescopic boom 12 last inserts in the 3rd arm pin-and-hole of joint telescopic boom 13 second from the bottom, realize the locking of joint telescopic boom 12 last and joint telescopic boom 13 second from the bottom, realize stretching out completely of joint telescopic boom 12 last;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the first cylinder pin 20 of the first cylinder head 18 of cylinder barrel 17 arrives the position of the cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, first cylinder pin 20 of the first cylinder head 18 inserts in the cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, realizes the locking of cylinder barrel 17 and joint telescopic boom 13 second from the bottom;
To leave behind the arm pin of joint telescopic boom 13 second from the bottom, realize the release of joint telescopic boom 13 second from the bottom and joint telescopic boom 14 third from the bottom;
Joint telescopic boom 13 second from the bottom is taken out of by cylinder barrel 17, when the arm pin of joint telescopic boom 13 second from the bottom arrives the position of the second arm pin-and-hole of joint telescopic boom 14 third from the bottom, the arm pin of joint telescopic boom 13 second from the bottom inserts in the second arm pin-and-hole of joint telescopic boom 14 third from the bottom, realizes the locking of joint telescopic boom 13 second from the bottom and joint telescopic boom 14 third from the bottom;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the second cylinder pin 21 of the second cylinder head 19 of cylinder barrel 17 arrives the position of the cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, second cylinder pin 21 of the second cylinder head 19 inserts in the cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, realizes the locking of cylinder barrel 17 and joint telescopic boom 13 second from the bottom;
To leave behind the arm pin of joint telescopic boom 13 second from the bottom, realize the release of joint telescopic boom 13 second from the bottom and joint telescopic boom 14 third from the bottom;
Joint telescopic boom 13 second from the bottom is taken out of by cylinder barrel 17, when the arm pin of joint telescopic boom 13 second from the bottom arrives the position of the 3rd arm pin-and-hole of joint telescopic boom 14 third from the bottom, the arm pin of joint telescopic boom 13 second from the bottom inserts in the 3rd arm pin-and-hole of joint telescopic boom 14 third from the bottom, realize the locking of joint telescopic boom 13 second from the bottom and joint telescopic boom 14 third from the bottom, realize stretching out completely of joint telescopic boom 13 second from the bottom;
Remaining telescopic boom stretches out successively according to the step of stretching out of joint telescopic boom last and joint telescopic boom second from the bottom, achieves stretching out of all telescopic booms.
Retraction operation is with to stretch out operation order contrary, the retraction of telescopic boom first half section is responsible for by first cylinder head 18, the retraction of telescopic boom second half section is responsible for by second cylinder head 19, and retraction order is: first segment telescopic boom → second section telescopic boom → three section telescopic boom → four section telescopic boom → five section telescopic boom.
As shown in Fig. 3 a-3m, retracting method is: the cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the second cylinder pin 21 of the cylinder head last 19 of cylinder barrel 17 arrives the position of cylinder pin-and-hole of first segment telescopic boom 16, second cylinder pin 21 of cylinder head 19 last inserts in the cylinder pin-and-hole of first segment telescopic boom 16, realizes the locking of cylinder barrel 17 and first segment telescopic boom 16;
To leave behind the arm pin of first segment telescopic boom 16, realize the release of basic arm 11 and first segment telescopic boom 16;
First segment telescopic boom 16 is taken back by cylinder barrel 17, when the arm pin of first segment telescopic boom 16 arrives the position of the arm pin-and-hole 24 second from the bottom of basic arm 11, the arm pin of first segment telescopic boom 16 inserts in the arm pin-and-hole 24 second from the bottom of basic arm 11, realizes the locking of basic arm 11 and first segment telescopic boom 16;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the first cylinder pin 20 of the cylinder head second from the bottom 18 of cylinder barrel 17 arrives the position of cylinder pin-and-hole of first segment telescopic boom 16, first cylinder pin 20 of cylinder head 18 second from the bottom inserts in the cylinder pin-and-hole of first segment telescopic boom 16, realizes the locking of cylinder barrel 17 and first segment telescopic boom 16;
To leave behind the arm pin of first segment telescopic boom 16, realize the release of basic arm 11 and first segment telescopic boom 16;
First segment telescopic boom 16 is taken back by cylinder barrel 17, when the arm pin of first segment telescopic boom 16 arrives the position of the arm pin-and-hole 23 third from the bottom of basic arm 11, the arm pin of first segment telescopic boom 16 inserts in the arm pin-and-hole 23 third from the bottom of basic arm 11, realize the locking of basic arm 11 and first segment telescopic boom 16, achieve the retraction completely of first segment telescopic boom 16;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the second cylinder pin 21 of the cylinder head last 19 of cylinder barrel 17 arrives the position of cylinder pin-and-hole of second section telescopic boom 15, second cylinder pin 21 of cylinder head 19 last inserts in the cylinder pin-and-hole of second section telescopic boom 15, realizes the locking of cylinder barrel 17 and second section telescopic boom 15;
To leave behind the arm pin of second section telescopic boom 15, realize the release of first segment telescopic boom 16 and second section telescopic boom 15;
Second section telescopic boom 15 is taken back by cylinder barrel 17, when the arm pin of second section telescopic boom 15 arrives the position of the arm pin-and-hole 24 second from the bottom of first segment telescopic boom 16, the arm pin of second section telescopic boom 15 inserts in the arm pin-and-hole 24 second from the bottom of first segment telescopic boom 16, realizes the locking of first segment telescopic boom 16 and second section telescopic boom 15;
The cylinder pin of retraction cylinder head, mobile cylinder barrel 17, when the first cylinder pin 20 of the cylinder head second from the bottom 18 of cylinder barrel 17 arrives the position of cylinder pin-and-hole of second section telescopic boom 15, first cylinder pin 20 of cylinder head 18 second from the bottom inserts in the cylinder pin-and-hole of second section telescopic boom 15, realizes the locking of cylinder barrel 17 and second section telescopic boom 15;
To leave behind the arm pin of second section telescopic boom 15, realize the release of first segment telescopic boom 16 and second section telescopic boom 15;
Second section telescopic boom 15 is taken back by cylinder barrel 17, when the arm pin of second section telescopic boom 15 arrives the position of the arm pin-and-hole 23 third from the bottom of first segment telescopic boom 16, the arm pin of second section telescopic boom 15 inserts in the arm pin-and-hole 23 third from the bottom of first segment telescopic boom 16, realize the locking of first segment telescopic boom 16 and second section telescopic boom 15, achieve the retraction completely of second section telescopic boom 15;
Remaining telescopic boom is retracted successively according to the retraction step of first segment telescopic boom and second section telescopic boom, achieves the retraction of all telescopic booms.
It should be noted that at any time, any one is saved telescopic boom or is locked by arm pin and other telescopic booms, or is locked by cylinder pin and telescopic oil cylinder.
The cylinder pin of all cylinder heads all links, so that cylinder pin synchronously stretches out or synchronously retracts.
Both sides due to cylinder head are equipped with cylinder pin and have at least 2 cylinder heads, synchronous device can be arranged link to make all cylinder pins between cylinder pin, and then all cylinder pins are synchronously stretched out or synchronously retracts certainly, the mode realizing the interlock of all cylinder pins is not limited to synchronous device, and other prior art that can realize the interlock of all cylinder pins all can adopt.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values with casehistory technical scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
Simultaneously, if the invention described above discloses or relate to parts or the framing member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use foundry technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent component part, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (10)
1. a single-cylinder bolt type telescopic boom, is characterized in that:
Comprise basic arm and be set at least one joint telescopic boom in described basic arm, the afterbody of telescopic boom is all provided with coaxial centre hole, is provided with telescopic oil cylinder in centre hole;
Described telescopic oil cylinder comprises cylinder bar and cylinder barrel, described cylinder bar is connected to the root hinge of described basic arm, the outside of described cylinder barrel is set with at least 2 cylinder heads in the vertical regularly, the left and right sides of each cylinder head is all provided with the cylinder pin that can stretch, the internal perisporium of the centre hole of the afterbody of telescopic boom is equipped with cylinder pin-and-hole, described cylinder barrel can be selectively fixedly connected with arbitrary telescopic boom with the cooperation of cylinder pin-and-hole by cylinder pin;
Basic arm and telescopic boom are all provided with at least 3 arm pin-and-holes in the vertical, often save the quantity at least many one of the number ratio cylinder head of the arm pin-and-hole of arm, the periphery wall of telescopic boom is all provided with the arm pin that can stretch, between basic arm with first segment telescopic boom and can by arm pin and coordinating of arm pin-and-hole realizing locking or discharging between adjacent telescopic boom.
2. single-cylinder bolt type telescopic boom according to claim 1, is characterized in that:
Often save many one of the quantity of the number ratio cylinder head of the arm pin-and-hole of arm.
3. single-cylinder bolt type telescopic boom according to claim 1, is characterized in that:
The outside of described cylinder barrel is set with 2 cylinder heads in the vertical regularly, and basic arm and telescopic boom are all provided with 3 arm pin-and-holes in the vertical.
4. single-cylinder bolt type telescopic boom according to claim 1, is characterized in that:
The both sides of described cylinder head are provided with cylinder pin mounting hole, and described cylinder pin is installed in described cylinder pin mounting hole.
5. single-cylinder bolt type telescopic boom according to claim 1, is characterized in that:
Described arm pin is driven by two arm pin oil cylinders, and described arm pin oil cylinder is arranged in the arm pin oil cylinder mounting hole of described cylinder head, and described arm pin oil cylinder lays respectively at the both sides of described cylinder head.
6. single-cylinder bolt type telescopic boom according to claim 1, is characterized in that:
Described cylinder head is cuboid, and have its through center mounting hole in the middle part of it, the internal diameter of center mounting hole is equal with the external diameter of described cylinder barrel, so that cylinder barrel can pass center mounting hole.
7. a hoisting crane, is characterized in that, described hoisting crane comprises the single-cylinder bolt type telescopic boom described in any one of claim 1-6.
8. a telescopic method for the single-cylinder bolt type telescopic boom as described in any one of claim 1-6, is characterized in that:
The cylinder pin of retraction cylinder head, mobile cylinder barrel, when the cylinder pin of the first cylinder head of cylinder barrel arrives the position of the cylinder pin-and-hole of joint telescopic boom last, the cylinder pin of the first cylinder head inserts in the cylinder pin-and-hole of joint telescopic boom last, realizes the locking of cylinder barrel and joint telescopic boom last;
To leave behind the arm pin of joint telescopic boom last, realize the release of joint telescopic boom last and joint telescopic boom second from the bottom;
Joint telescopic boom last is taken out of by cylinder barrel, when the arm pin of joint telescopic boom last arrives the position of the second arm pin-and-hole of joint telescopic boom second from the bottom, the arm pin of joint telescopic boom last inserts in the second arm pin-and-hole of joint telescopic boom second from the bottom, realizes the locking of joint telescopic boom last and joint telescopic boom second from the bottom;
The remaining cylinder head of cylinder barrel carries out successively according to the control step of the first cylinder head, realizes stretching out completely of joint telescopic boom last;
Remaining telescopic boom stretches out successively according to the step of stretching out of joint telescopic boom last, achieves stretching out of all telescopic booms.
9. telescopic method according to claim 8, is characterized in that:
The cylinder pin of retraction cylinder head, mobile cylinder barrel, when the cylinder pin of the cylinder head last of cylinder barrel arrives the position of the cylinder pin-and-hole of first segment telescopic boom, the cylinder pin of cylinder head last inserts in the cylinder pin-and-hole of first segment telescopic boom, realizes the locking of cylinder barrel and first segment telescopic boom;
To leave behind the arm pin of first segment telescopic boom, realize the release of basic arm and first segment telescopic boom;
First segment telescopic boom is taken back by cylinder barrel, and when the arm pin of first segment telescopic boom arrives the position of the arm pin-and-hole second from the bottom of basic arm, the arm pin of first segment telescopic boom inserts in the arm pin-and-hole second from the bottom of basic arm, realizes the locking of basic arm and first segment telescopic boom;
The remaining cylinder head of cylinder barrel carries out successively according to the control step of cylinder head last, achieves the retraction completely of first segment telescopic boom;
Remaining telescopic boom is retracted successively according to the retraction step of first segment telescopic boom, achieves the retraction of all telescopic booms.
10. telescopic method according to claim 8 or claim 9, is characterized in that:
The cylinder pin of all cylinder heads all links, so that cylinder pin synchronously stretches out or synchronously retracts.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310380406.2A CN103407912B (en) | 2013-08-27 | 2013-08-27 | Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm |
| CA2922437A CA2922437C (en) | 2013-08-27 | 2014-08-27 | Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm |
| AU2014314763A AU2014314763B2 (en) | 2013-08-27 | 2014-08-27 | Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping arm |
| US14/914,643 US10077173B2 (en) | 2013-08-27 | 2014-08-27 | Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm |
| PCT/CN2014/085298 WO2015027918A1 (en) | 2013-08-27 | 2014-08-27 | Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping arm |
| RU2016110881A RU2646710C2 (en) | 2013-08-27 | 2014-08-27 | Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm |
| EP14839217.8A EP3040304B1 (en) | 2013-08-27 | 2014-08-27 | Single-acting pin-type telescoping arm and crane having the telescoping arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310380406.2A CN103407912B (en) | 2013-08-27 | 2013-08-27 | Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm |
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| Publication Number | Publication Date |
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| CN103407912A CN103407912A (en) | 2013-11-27 |
| CN103407912B true CN103407912B (en) | 2015-06-17 |
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| CN201310380406.2A Active CN103407912B (en) | 2013-08-27 | 2013-08-27 | Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm |
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| US10077173B2 (en) | 2013-08-27 | 2018-09-18 | Xuzhou Heavy Machinery Co., Ltd. | Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm |
| CN103603844A (en) * | 2013-12-05 | 2014-02-26 | 徐州重型机械有限公司 | Single-cylinder pin type telescopic cylinder, telescopic arm and engineering machine equipment |
| CN103738864B (en) * | 2013-12-19 | 2016-01-20 | 三一汽车起重机械有限公司 | Crane arm and hoisting crane |
| CN103663192B (en) * | 2013-12-30 | 2015-11-25 | 徐州重型机械有限公司 | Improve single-cylinder bolt telescopic system to stretch the method for success ratio, device and hoisting crane |
| CN104129725B (en) * | 2014-08-21 | 2016-05-25 | 徐州重型机械有限公司 | A kind of single-cylinder bolt type telescopic boom, telescopic method and crane |
| CN104773653B (en) * | 2015-04-08 | 2017-03-15 | 徐州重型机械有限公司 | A kind of crane single cylinder bolt telescopic control method, system and contilever structure |
| CN106256751B (en) * | 2015-06-17 | 2017-10-27 | 徐工集团工程机械股份有限公司 | The control method and system and crane of single-cylinder bolt type telescopic boom arm pin back-off |
| CN106495033B (en) * | 2016-12-30 | 2018-08-28 | 徐州重型机械有限公司 | Crane arm and crane with it |
| 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 |
| CN108116995B (en) * | 2017-09-30 | 2019-07-09 | 陈奕松 | A kind of locking device of telescoping boom, telescoping boom, crane and its flexible locking means |
| WO2019148390A1 (en) * | 2018-01-31 | 2019-08-08 | 徐州重型机械有限公司 | Single-cylinder latch-type telescopic cylinder, telescopic boom, and construction machinery apparatus |
| JP6627898B2 (en) * | 2018-02-16 | 2020-01-08 | 株式会社タダノ | crane |
| IT201800020221A1 (en) * | 2018-12-19 | 2020-06-19 | Cifa Spa | TELESCOPIC ARM FOR CRANE AND CRANE INCLUDING THIS ARM |
| CN109969958B (en) * | 2019-03-06 | 2024-07-02 | 湖南双达机电有限责任公司 | Telescopic boom of aerial work equipment and aerial work equipment |
| CN111017750A (en) * | 2019-12-09 | 2020-04-17 | 三一汽车起重机械有限公司 | Single-cylinder bolt type suspension arm, suspension arm operation method and crane |
| CN112777498B (en) * | 2021-03-23 | 2022-07-05 | 三一汽车起重机械有限公司 | Telescopic boom structure and crane |
| CN115108480A (en) * | 2022-07-25 | 2022-09-27 | 浙江三一装备有限公司 | Crane arm head, crane arm and hoisting machine |
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Address after: 221001 Jiangsu city of Xuzhou Province Economic and Technological Development Zone of High Road No. 68 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |