CN103407912A - 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 PDF

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Publication number
CN103407912A
CN103407912A CN2013103804062A CN201310380406A CN103407912A CN 103407912 A CN103407912 A CN 103407912A CN 2013103804062 A CN2013103804062 A CN 2013103804062A CN 201310380406 A CN201310380406 A CN 201310380406A CN 103407912 A CN103407912 A CN 103407912A
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CN
China
Prior art keywords
cylinder
telescopic boom
pin
arm
hole
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CN2013103804062A
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Chinese (zh)
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CN103407912B (en
Inventor
东权
张鑫
邓永建
赵玉春
刘晓飞
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徐州重型机械有限公司
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Priority to CN201310380406.2A priority Critical patent/CN103407912B/en
Publication of CN103407912A publication Critical patent/CN103407912A/en
Priority claimed from PCT/CN2014/085298 external-priority patent/WO2015027918A1/en
Application granted granted Critical
Publication of CN103407912B publication Critical patent/CN103407912B/en

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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

A kind of single-cylinder bolt type telescopic boom, hoisting crane and telescopic method thereof
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 hoisting crane of this single-cylinder bolt type telescopic boom and the telescopic method of this single-cylinder bolt type telescopic boom thereof.
Background technology
The single-cylinder bolt system is a kind of being built in crane arm, realize a kind of device of the Telescopic of crane arm, mainly by telescopic boom and telescopic oil cylinder, formed, 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 is realized flexible main function components.Cylinder head is positioned at a certain position of cylinder barrel or the piston rod of telescopic oil cylinder, realizes fixing and the device separated be used to controlling between telescopic oil cylinder and telescopic boom, mainly comprises arm pin actuating device, cylinder pin, drives oil cylinder, position probing piece etc.The cylinder pin is the pin on the cylinder head of telescopic oil cylinder, and it act as telescopic oil cylinder and telescopic boom are locked together, and in existing product, each cylinder head has 2 or 4 cylinder pins usually.The arm pin is the pin on telescopic boom, and it act as each joint telescopic boom is locked together, 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, makes the device of each telescopic boom release.Detector switch is the sensor for detection of arm position, cylinder pin or the release of arm pin and the locking state of each joint telescopic boom.
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 the cylinder barrel 1 that can move, 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 are coplanar; This telescopic oil cylinder can selectively lock or discharge by cylinder pin 3 relative position of itself and arbitrary joint telescopic boom 4.In addition, between each adjacent telescopic boom 4 and basic arm 5(directly with the arm of crane pivot joint) and the first segment telescopic boom between be equipped with arm pin 6, between adjacent telescopic boom 4 and the relative position 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: at 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 this telescopic oil cylinder can be taken joint telescopic boom last out of; Joint telescopic boom last after arriving desired location relocks itself and joint telescopic boom second from the bottom, regain telescopic oil cylinder and itself and joint telescopic boom second from the bottom are locked, then by joint telescopic boom second from the bottom and joint telescopic boom third from the bottom release, now this telescopic oil cylinder namely can be taken joint telescopic boom second from the bottom out of, and joint telescopic boom second from the bottom after arriving desired location relocks itself and joint telescopic boom third from the bottom.The rest may be inferred just can make respectively to save telescopic boom and stretch out successively.Certainly, at any time, any one saves telescopic boom or locks by arm pin and other telescopic booms, or by cylinder pin and telescopic oil cylinder locking.
The stretch mode of existing single cylinder bolt-type, the stroke of its telescopic oil cylinder is greater than the range of every joint semi-girder, can be by a joint semi-girder from disposable 100% the state of entirely stretching that extends of full reduced 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 slightly very long, need simultaneously more fluid, hydraulic efficiency pressure system need configure larger fuel tank, to meet flexible needs.This causes the oil cylinder cost very high, and the weight of crane is excessive, indirectly causes chassis weight also to rise, and has limited lifting performance, approaches the minimum requirements of national standard, has a great impact for the product competition advantage.
2, cost is high.The telescopic oil cylinder stroke need to meet the stroke that stretches out of every joint telescopic boom, causes the telescopic oil cylinder stroke long.The cylinder bar of long-cylinder and the processing difficulties of cylinder barrel, need professional special Fabricating machinery and processing conditions, causes the telescopic oil cylinder cost also significantly to improve.
3, weight is large.Because telescopic oil cylinder is long, and need to bear larger axial compression load, produce 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 of more growing, telescopic oil cylinder weight is increased.For meeting the flexible of large stroke oil cylinder, need the fuel tank of configuration large-size simultaneously, also can cause the weight of hoisting crane to increase.
Because of national communication regulation, the weight of upper road vehicles is had to clear, so the increase of weight can cause rubber tyre gantry crane design more complicated, the vehicle road toll also can increase thereupon.
4, poor stability.The telescopic oil cylinder of long stroke, after the cylinder bar stretches out, because own wt is excessive, cause cylinder bar and cylinder barrel middle interconnecting piece position the phenomenon of downwarp to occur, causes the increase of telescopic oil cylinder friction force.Be subjected to simultaneously 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 objective of the invention is to propose a kind of single-cylinder bolt type telescopic boom, comprise the hoisting crane of this single-cylinder bolt type telescopic boom and the telescopic method of this single-cylinder bolt type telescopic boom thereof, this single-cylinder bolt type telescopic boom has solved the problems referred to above effectively, simple in structure, easy to operate.
For achieving the above object, the invention provides following technical scheme:
A kind of single-cylinder bolt type telescopic boom comprises basic arm and is set at least one joint telescopic boom in basic arm that the afterbody of telescopic boom all is provided with coaxial centre hole, in centre hole, is provided with telescopic oil cylinder;
Telescopic oil cylinder comprises cylinder bar and cylinder barrel, the cylinder bar is connected in 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 all is provided with the cylinder pin that can stretch, on the internal perisporium of the centre hole of the afterbody of telescopic boom, be equipped with the cylinder pin-and-hole, cylinder barrel can selectively be fixedly connected with arbitrary telescopic boom by the cooperation of cylinder pin and cylinder pin-and-hole;
Basic arm and telescopic boom all are provided with at least 3 arm pin-and-holes in the vertical, many at least one than the quantity of cylinder head of the quantity of the arm pin-and-hole of every joint arm, on the periphery wall of telescopic boom, all be provided with the arm pin that can stretch, can realize locking or discharge by coordinating of arm pin and arm pin-and-hole between basic arm and first segment telescopic boom and between adjacent telescopic boom.
At one preferably or alternatively in embodiment, many one than the quantity of cylinder head of the quantity of the arm pin-and-hole of every joint arm.
Preferably or alternatively in embodiment, the outside of cylinder barrel is set with 2 cylinder heads in the vertical regularly at one, and basic arm and telescopic boom all are provided with 3 arm pin-and-holes in the vertical.
Preferably or alternatively in embodiment, the both sides of cylinder head are provided with cylinder pin mounting hole at one, and the cylinder pin is installed in cylinder pin mounting hole.
Preferably or alternatively in embodiment, the arm pin is driven by two arm pin oil cylinders at one, 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.
Preferably or alternatively in embodiment, cylinder head is cuboid at one, and its middle part has the center mounting hole of its perforation, and the internal diameter of center mounting hole equates with the external diameter of cylinder barrel, so that cylinder barrel can pass center mounting hole.
The present invention also provides following technical scheme:
A kind of hoisting crane, hoisting crane comprise single-cylinder bolt type telescopic boom as above.
The present invention also provides following technical scheme:
A kind of telescopic method of 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 arrived the position of cylinder pin-and-hole of joint telescopic boom last, the cylinder pin of the first cylinder head inserted in the cylinder pin-and-hole of joint telescopic boom last, realizes the locking of cylinder barrel and joint telescopic boom last;
The leave behind arm pin of joint telescopic boom last, realize the release of joint telescopic boom last and joint telescopic boom second from the bottom;
Cylinder barrel is taken joint telescopic boom last out of, 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 fully of joint telescopic boom last;
Remaining telescopic boom stretches out successively according to the step of stretching out of joint telescopic boom last, has realized stretching out of all telescopic booms.
At one preferably or alternatively in 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 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;
The leave behind arm pin of first segment telescopic boom, realize the release of basic arm and first segment telescopic boom;
Cylinder barrel is taken back the first segment telescopic boom, and when the arm pin of first segment telescopic boom arrived the position of arm pin-and-hole second from the bottom of basic arm, the arm pin of first segment telescopic boom inserted 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, has realized the retraction fully of first segment telescopic boom;
Remaining telescopic boom is retracted successively according to the retraction step of first segment telescopic boom, has realized the retraction of all telescopic booms.
Preferably or alternatively in embodiment, the cylinder pin of all cylinder heads all links at one, so that the cylinder pin synchronously stretches out or synchronously retract.
Based on the arbitrary technical scheme in technique scheme, the embodiment of the present invention can produce following technique effect at least:
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 be realized the locked and release of telescopic oil cylinder and arbitrary telescopic boom, by the mode of delivering in relays, telescopic boom is stretched out or retract, realize the flexible of single-cylinder bolt type telescopic boom, shortened oil cylinder length, oil cylinder cylinder diameter and bar footpath have been reduced, reduce the oil cylinder cost, can reduce the fuel tank size simultaneously, reduced the weight of getting on the bus, the hoisting ability, make the design of hoisting crane have more performance space.
In addition, at least also there is following advantage in the preferred technical solution of the present invention:
1, cost is low.The telescopic boom segmentation is stretched out or retracted, and the required stroke of telescopic oil cylinder reduces, so telescopic oil cylinder is also shorter.The cylinder barrel of short oil cylinder and cylinder bar are also shorter, process more conveniently, the requirement of Fabricating machinery and processing conditions are also reduced, so the telescopic oil cylinder cost also declines to a great extent.
2, weight is little.Because telescopic oil cylinder shortens, own wt descends.Because arm itself is constant, so the axial compression load born is identical, now can suitably dwindle cylinder rod footpath, cylinder diameter and material thickness, shorten the guiding distance of telescopic oil cylinder, also can prevent that telescopic oil cylinder from producing longitudinal bending, meet equally the requirement of stability, reduce telescopic oil cylinder weight.In addition, for meeting the flexible of short travel oil cylinder, can configure the fuel tank of reduced size simultaneously, alleviate hoisting crane weight.Due to the reduction of weight, the designer will have more design space.
3, stability is better.Oil cylinder stroke shortens, and makes its processing conditions better, and surface finish is higher, and friction force is less.In addition, telescopic oil cylinder is subjected to the impact of hydraulic oil modulus of elasticity less, can alleviate the situation of telescopic oil cylinder climbing, reduces jitterbug.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 a-1g is the process of the stretching out schematic diagram of the single-cylinder bolt type telescopic boom of prior art, wherein Fig. 1 a is full reduced view, Fig. 1 b is that the 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 that finds joint telescopic boom last, insert the cylinder pin, the leave behind 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 the 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 that finds joint telescopic boom second from the bottom, insert the cylinder pin, the leave behind 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 is the process of the stretching out schematic diagram of the preferred embodiment of single-cylinder bolt type telescopic boom of the present invention, wherein Fig. 2 a is full reduced view, Fig. 2 b is that the 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 that finds joint telescopic boom last, insert the first cylinder pin, the leave behind 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 that finds joint telescopic boom last, insert the second cylinder pin, the leave behind 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 the 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 that finds joint telescopic boom second from the bottom, insert the first cylinder pin, the leave behind 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 stretching view,
Fig. 3 a-3m is the retraction process schematic diagram of the preferred embodiment of single-cylinder bolt type telescopic boom of the present invention, wherein Fig. 3 a is for entirely stretching view, Fig. 3 b is that the cylinder pin is retracted, find the view of the cylinder pin-and-hole of the 5th joint telescopic boom reciprocal, Fig. 3 c is the cylinder pin-and-hole that finds the 5th joint telescopic boom reciprocal, insert the second cylinder pin, the leave behind view of arm pin, Fig. 3 d is the view that telescopic oil cylinder band the 5th joint telescopic boom reciprocal is retracted, Fig. 3 e is the view that the arm pin of the 5th joint telescopic boom reciprocal inserts the second arm pin-and-hole of basic arm, Fig. 3 f is that the cylinder pin is retracted, find the view of the cylinder pin-and-hole of the 5th joint telescopic boom reciprocal, Fig. 3 g is the cylinder pin-and-hole that finds the 5th joint telescopic boom reciprocal, insert the first cylinder pin, the leave behind view of arm pin, Fig. 3 h is the view that the arm pin of the 5th joint telescopic boom reciprocal inserts the first arm pin-and-hole of basic arm, Fig. 3 i is the cylinder pin-and-hole that finds fourth from the last joint telescopic boom, insert the second cylinder pin, the leave behind view of arm pin, Fig. 3 j is the view that the arm pin of fourth from the last joint telescopic boom inserts the second arm pin-and-hole of the 5th joint telescopic boom reciprocal, Fig. 3 k is the cylinder pin-and-hole that finds fourth from the last joint telescopic boom, insert the first cylinder pin, the leave behind view of arm pin, Fig. 3 l is the view that the arm pin of fourth from the last joint telescopic boom inserts the first arm pin-and-hole of the 5th joint telescopic boom reciprocal, Fig. 3 m is full reduced view.
The specific embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
It should be noted that: any technical characterictic in the present embodiment, any technical scheme is all the technical characterictic of plurality of optional or one or more in optional technical scheme, can't exhaustive all alternative technical characterictics of the present invention and alternative technical scheme in order to describe succinct need in presents, the embodiment that also is not easy to each technical characterictic emphasizes that all it is one of optional numerous embodiments, so those skilled in the art should know: any technical characterictic and any technical scheme in the present embodiment all do not limit the scope of the invention, protection scope of the present invention should comprise that those skilled in the art do not pay the thinkable any alternate embodiments of creative work.
Hereinafter in order to narrate conveniently, hereinafter alleged " left side ", " right side ", " 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 more than 2 or 2.
Hereinafter in order to narrate conveniently, at least 2 cylinder heads as reference, are distinguished 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 on accompanying drawing respectively; At least 2 cylinder heads as reference, are distinguished cylinder head with cylinder head last, cylinder head second from the bottom, cylinder head third from the bottom (by that analogy) from the direction from right to left on accompanying drawing respectively, but the size of all cylinder heads, structure, material are all identical.Casehistory is as follows: when cylinder head has 2, from the direction from left to right on accompanying drawing as reference, with the first cylinder head, the second cylinder head, distinguish 2 cylinder heads respectively, from the direction from right to left on accompanying drawing as reference, with cylinder head last, cylinder head second from the bottom, distinguish 2 cylinder heads respectively, that is to say that the first cylinder head is exactly cylinder head second from the bottom, the second cylinder head is exactly cylinder head last.When cylinder head has 5, from the direction from left to right on accompanying drawing as reference, respectively with the first cylinder head, the second cylinder head, the 3rd cylinder head, the 4th cylinder head, the 5th cylinder head is distinguished 5 cylinder heads, from the direction from right to left on accompanying drawing as reference, respectively with cylinder head last, cylinder head second from the bottom, cylinder head third from the bottom, the fourth from the last cylinder head, the 5th cylinder head reciprocal is distinguished 5 cylinder heads, that is to say that the first cylinder head is exactly the 5th cylinder head reciprocal, the second cylinder head is exactly the fourth from the last cylinder head, the 3rd cylinder head is exactly cylinder head third from the bottom, the 4th cylinder head is exactly cylinder head second from the bottom, the 5th cylinder head is exactly cylinder head last.
At least 3 arm pin-and-holes refer to the arm pin-and-hole more than 3 or 3.
Hereinafter in order to narrate conveniently, at least 3 arm pin-and-holes as reference, are distinguished the 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 on accompanying drawing respectively; At least 3 arm pin-and-holes as reference, are distinguished the 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 on accompanying drawing respectively, and the arm pin-and-hole of every joint telescopic boom arranges that rule is identical.Casehistory is as follows: when the arm pin-and-hole has 3, from the direction from left to right on accompanying drawing as reference, with the first arm pin-and-hole, the second arm pin-and-hole, the 3rd arm pin-and-hole, distinguish 3 arm pin-and-holes respectively, from the direction from right to left on accompanying drawing as reference, with arm pin-and-hole last, arm pin-and-hole second from the bottom, arm pin-and-hole third from the bottom, distinguish 3 arm pin-and-holes respectively, that is to say that the first arm pin-and-hole is exactly arm pin-and-hole third from the bottom, the 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 the arm pin-and-hole has 5, from the direction from left to right on accompanying drawing as reference, respectively with the first arm pin-and-hole, the second arm pin-and-hole, the 3rd arm pin-and-hole, the 4th arm pin-and-hole, the 5th arm pin-and-hole is distinguished 5 arm pin-and-holes, from the direction from right to left on 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, the 5th arm pin-and-hole reciprocal is distinguished 5 arm pin-and-holes, that is to say that the first arm pin-and-hole is exactly the 5th arm pin-and-hole reciprocal, the second arm pin-and-hole is exactly fourth from the last arm pin-and-hole, the 3rd arm pin-and-hole is exactly arm pin-and-hole third from the bottom, the 4th arm pin-and-hole is exactly arm pin-and-hole second from the bottom, the 5th arm pin-and-hole is exactly arm pin-and-hole last.
Hereinafter in order to narrate conveniently, at least one joint telescopic boom as reference, is distinguished telescopic boom with first segment telescopic boom, second section telescopic boom, the 3rd joint telescopic boom (by that analogy) from the direction from outside to inside on accompanying drawing respectively; At least one joint telescopic boom from the direction from inside to outside on accompanying drawing as reference, with joint telescopic boom last, joint telescopic boom second from the bottom, joint telescopic boom third from the bottom (by that analogy), distinguish telescopic boom respectively, but first segment telescopic boom, second section telescopic boom, the 3rd joint telescopic boom (by that analogy) be the radial dimension difference just, and structure, material are identical.The radial dimension of multi-stage telescopic arms need to meet following situation: the 3rd joint telescopic boom can be located in the inner chamber of second section telescopic boom, and the second section telescopic boom can be located in the inner chamber of first segment telescopic boom, and the 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 on accompanying drawing as reference, respectively with the first segment telescopic boom, the second section telescopic boom is distinguished 2 joint telescopic booms, from the direction from inside to outside on accompanying drawing as reference, respectively with joint telescopic boom last, joint telescopic boom second from the bottom is distinguished 2 joint telescopic booms, that is to say that the first segment telescopic boom is exactly joint telescopic boom second from the bottom, the second section telescopic boom is exactly joint telescopic boom last, the radial dimension of 2 joint telescopic booms need to meet following situation: the second section telescopic boom can be located in the inner chamber of first segment telescopic boom, the 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 on accompanying drawing as reference, respectively with the first segment telescopic boom, the second section telescopic boom, the 3rd joint telescopic boom, the 4th joint telescopic boom, the 5th joint telescopic boom is distinguished 5 joint telescopic booms, from the direction from inside to outside on 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, the 5th joint telescopic boom reciprocal is distinguished 5 joint telescopic booms, that is to say that the first segment telescopic boom is exactly the 5th joint telescopic boom reciprocal, the second section telescopic boom is exactly fourth from the last joint telescopic boom, the 3rd joint telescopic boom is exactly joint telescopic boom third from the bottom, the 4th joint telescopic boom is exactly joint telescopic boom second from the bottom, the 5th joint telescopic boom is exactly joint telescopic boom last, the radial dimension of 5 joint telescopic booms need to meet following situation: the 5th joint telescopic boom can be located in the inner chamber of the 4th joint telescopic boom, the 4th joint telescopic boom can be located in the inner chamber of the 3rd joint telescopic boom, the 3rd joint telescopic boom can be located in the inner chamber of second section telescopic boom, the second section telescopic boom can be located in the inner chamber of first segment telescopic boom, the first segment telescopic boom can be located in the inner chamber of basic arm.
If 2 cylinder heads are arranged on oil cylinder, every joint telescopic boom flexible is divided into 2 sections and carries out, and the first cylinder head is responsible for the flexible of the last period, and the second cylinder head is responsible for latter one section flexible; If 3 cylinder heads are arranged on oil cylinder, the first cylinder head is responsible for the flexible of telescopic boom the last period, and the second cylinder head is responsible for the flexible of interlude, and the 3rd cylinder head is responsible for latter one section flexible; If 4 or more cylinder head are arranged, by that analogy on oil cylinder.
As shown in Figure 2 a, a kind of single-cylinder bolt type telescopic boom, comprise basic arm 11 and be set in the joint of 5 in basic arm 11 telescopic boom, 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 the 5th joint telescopic boom 16 reciprocal, the afterbody of 5 joint telescopic booms all is provided with coaxial centre hole, in centre hole, is provided with telescopic oil cylinder; Telescopic oil cylinder comprises cylinder bar and cylinder barrel 17, the cylinder bar is connected in 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 all is provided with the first cylinder pin 20 that can stretch, the left and right sides of the second cylinder head 19 all is provided with the second cylinder pin 21 that can stretch, on the internal perisporium of the centre hole of the afterbody 27 of telescopic boom, be equipped with cylinder pin-and-hole 22, cylinder barrel 17 can selectively be fixedly connected with arbitrary telescopic boom by the cooperation of cylinder pin and cylinder pin-and-hole; Basic arm and telescopic boom all are provided with 3 arm pin-and-holes in the vertical, 3 arm pin-and-holes are respectively the first arm pin-and-hole 23, the second arm pin-and-hole 24 and the 3rd arm pin-and-hole 25, on the periphery wall of telescopic boom, all be provided with the arm pin 26 that can stretch, can realize locking or discharge by coordinating of arm pin and arm pin-and-hole between basic arm and first segment telescopic boom and between adjacent telescopic boom.
The fixed end of telescopic oil cylinder is connected in the root hinge of basic arm, and its movable end can selectively be fixedly connected with arbitrary telescopic boom by the cylinder pin.The fixed end of telescopic oil cylinder is the cylinder bar, and its movable end is cylinder barrel.
The cylinder pin is in the state of stretching out usually, namely is in the state of cylinder barrel and certain joint telescopic boom locking; While needing release, can promote the cylinder pin by cylinder pin oil cylinder (not shown) it is retracted, and then realize the release of cylinder barrel and certain joint telescopic boom.When needs relock cylinder pin and certain joint telescopic boom, can unload press operation to cylinder pin oil cylinder, now the 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, the 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; The 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.
The arm pin is arranged at the top of telescopic boom usually, and can move vertically, thereby will between basic arm and first segment telescopic boom and between adjacent telescopic boom, lock or release.The bottom of arm pin can snap in dovetail furrow, therefore can be driven and be moved on substantially vertical direction by dovetail furrow; Dovetail furrow is fixedly connected with arm pin oil cylinder, thereby 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 or regain with cylinder barrel, and therefore, arm pin oil cylinder and dovetail furrow can move vertically in the inner chamber of telescopic boom; While being in different positions, dovetail furrow can from different arm pin phase clampings, thereby can drive different arm pins, stretch out or retract.
The first cylinder head 18 and the second cylinder head 19 all are cuboid, and its middle part has the center mounting hole of its perforation, and the internal diameter of center mounting hole equates with the external diameter of cylinder barrel 17, so that cylinder barrel 17 can pass center mounting hole.The first cylinder head 18 and the second cylinder head 19 (for example bolt) in a conventional manner are fixed in the outside of cylinder barrel 17.
A kind of hoisting crane, hoisting crane comprise single-cylinder bolt type telescopic boom as above.
The other parts of hoisting crane can be 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, stretching out with retraction of every joint telescopic boom all is divided into two sections, the first cylinder head 18 is responsible for stretching out of telescopic boom first half section, the second cylinder head 19 is responsible for stretching out of telescopic boom second half section, stretches out order and is: 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 the 5th joint 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 cylinder pin-and-hole of joint telescopic boom 12 last, the 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;
The leave behind 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;
Cylinder barrel 17 is taken joint telescopic boom 12 last out of, 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 cylinder pin-and-hole of joint telescopic boom 12 last, the 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;
The leave behind 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;
Cylinder barrel 17 is taken joint telescopic boom 12 last out of, 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 fully 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 cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, the 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;
The leave behind 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;
Cylinder barrel 17 is taken joint telescopic boom 13 second from the bottom out of, 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 cylinder pin-and-hole of joint telescopic boom 13 second from the bottom, the 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;
The leave behind 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;
Cylinder barrel 17 is taken joint telescopic boom 13 second from the bottom out of, 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 fully 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, has realized stretching out of all telescopic booms.
Retraction operation is with to stretch out operation order opposite, the first cylinder head 18 is responsible for the retraction of telescopic boom first half section, the second cylinder head 19 is responsible for the retraction of telescopic boom second half section, and retraction is sequentially: first segment telescopic boom → second section telescopic boom → the 3rd joint telescopic boom → the 4th joint telescopic boom → the 5th joint 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 booms 16, the 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;
The leave behind arm pin of first segment telescopic boom 16, realize the release of basic arm 11 and first segment telescopic boom 16;
Cylinder barrel 17 is taken back first segment telescopic boom 16, when the arm pin of first segment telescopic boom 16 arrives the position of 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 booms 16, the 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;
The leave behind arm pin of first segment telescopic boom 16, realize the release of basic arm 11 and first segment telescopic boom 16;
Cylinder barrel 17 is taken back first segment telescopic boom 16, when the arm pin of first segment telescopic boom 16 arrives the position of 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, realized the retraction fully 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 booms 15, the 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;
The leave behind arm pin of second section telescopic boom 15, realize the release of first segment telescopic boom 16 and second section telescopic boom 15;
Cylinder barrel 17 is taken back second section telescopic boom 15, when the arm pin of second section telescopic boom 15 arrives the position of 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 booms 15, the 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;
The leave behind arm pin of second section telescopic boom 15, realize the release of first segment telescopic boom 16 and second section telescopic boom 15;
Cylinder barrel 17 is taken back second section telescopic boom 15, when the arm pin of second section telescopic boom 15 arrives the position of 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, realized the retraction fully 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, has realized the retraction of all telescopic booms.
It should be noted that at any time, any one saves telescopic boom or locks by arm pin and other telescopic booms, or by cylinder pin and telescopic oil cylinder locking.
The cylinder pin of all cylinder heads all links, so that the cylinder pin synchronously stretches out or synchronously retraction.
Because the both sides of cylinder head are equipped with the cylinder pin and have at least 2 cylinder heads, can between the cylinder pin, synchronous device be set so that the interlock of all cylinder pins, and then all cylinder pins can synchronously be stretched out or synchronously retract certainly, the mode that realizes all cylinder pin interlocks is not limited to synchronous device, and other prior art that can realize all cylinder pin interlocks all can adopt.
The disclosed arbitrary technical scheme of the invention described above unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the apparent in view or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, can't be exhaustive, so the present invention just discloses part numerical value with casehistory technical scheme of the present invention, and the above-mentioned numerical value of enumerating should not form the restriction to the invention protection domain.
Simultaneously, if the invention described above discloses or has related 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 be fixedly connected with (for example using bolt or screw to connect) with dismantling, also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously can't adopt except integrally formed technique) by integral type structure (use foundry technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of the invention described above applied be used to the term that means position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts provided by the invention can be both to be assembled by a plurality of independent component parts, the produced separate part of the technique that also can be one of the forming.
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, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.

Claims (10)

1. 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 all is provided with coaxial centre hole, in centre hole, is provided with telescopic oil cylinder;
Described telescopic oil cylinder comprises cylinder bar and cylinder barrel, described cylinder bar is connected in 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 all is provided with the cylinder pin that can stretch, on the internal perisporium of the centre hole of the afterbody of telescopic boom, be equipped with the cylinder pin-and-hole, described cylinder barrel can selectively be fixedly connected with arbitrary telescopic boom by the cooperation of cylinder pin and cylinder pin-and-hole;
Basic arm and telescopic boom all are provided with at least 3 arm pin-and-holes in the vertical, many at least one than the quantity of cylinder head of the quantity of the arm pin-and-hole of every joint arm, on the periphery wall of telescopic boom, all be provided with the arm pin that can stretch, can realize locking or discharge by coordinating of arm pin and arm pin-and-hole between basic arm and first segment telescopic boom and between adjacent telescopic boom.
2. single-cylinder bolt type telescopic boom according to claim 1 is characterized in that:
Many one than the quantity of cylinder head of the quantity of the arm pin-and-hole of every joint 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 all are 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 its middle part has the center mounting hole of its perforation, and the internal diameter of center mounting hole equates 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 described single-cylinder bolt type telescopic boom of claim 1-6 any one.
8. the telescopic method of the described single-cylinder bolt type telescopic boom of claim 1-6 any one 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 arrived the position of cylinder pin-and-hole of joint telescopic boom last, the cylinder pin of the first cylinder head inserted in the cylinder pin-and-hole of joint telescopic boom last, realizes the locking of cylinder barrel and joint telescopic boom last;
The leave behind arm pin of joint telescopic boom last, realize the release of joint telescopic boom last and joint telescopic boom second from the bottom;
Cylinder barrel is taken joint telescopic boom last out of, 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 fully of joint telescopic boom last;
Remaining telescopic boom stretches out successively according to the step of stretching out of joint telescopic boom last, has realized 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 arrived the position of cylinder pin-and-hole of first segment telescopic boom, the cylinder pin of cylinder head last inserted in the cylinder pin-and-hole of first segment telescopic boom, realizes the locking of cylinder barrel and first segment telescopic boom;
The leave behind arm pin of first segment telescopic boom, realize the release of basic arm and first segment telescopic boom;
Cylinder barrel is taken back the first segment telescopic boom, and when the arm pin of first segment telescopic boom arrived the position of arm pin-and-hole second from the bottom of basic arm, the arm pin of first segment telescopic boom inserted 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, has realized the retraction fully of first segment telescopic boom;
Remaining telescopic boom is retracted successively according to the retraction step of first segment telescopic boom, has realized the retraction of all telescopic booms.
10. according to claim 8 or claim 9 telescopic method is characterized in that:
The cylinder pin of all cylinder heads all links, so that the cylinder pin synchronously stretches out or synchronously retraction.
CN201310380406.2A 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 CN103407912B (en)

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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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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
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
CA2922437A CA2922437C (en) 2013-08-27 2014-08-27 Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm
EP14839217.8A EP3040304A4 (en) 2013-08-27 2014-08-27 Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping 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

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CN103663192A (en) * 2013-12-30 2014-03-26 徐州重型机械有限公司 Method and device for improving telescoping success rate of single-cylinder bolt telescoping system as well as crane
CN103738864A (en) * 2013-12-19 2014-04-23 三一汽车起重机械有限公司 Cargo boom and crane
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WO2015027918A1 (en) * 2013-08-27 2015-03-05 徐州重型机械有限公司 Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping arm
CN104773653A (en) * 2015-04-08 2015-07-15 徐州重型机械有限公司 Telescopic control method, system and telescopic arm structure of single-cylinder plug pin of crane
CN106256751A (en) * 2015-06-17 2016-12-28 徐工集团工程机械股份有限公司 The control method of single-cylinder bolt type telescopic boom arm pin back-off and system and crane
CN106495033A (en) * 2016-12-30 2017-03-15 徐州重型机械有限公司 Crane arm and the crane with which
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
CN108116995A (en) * 2017-09-30 2018-06-05 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
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

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WO2015027918A1 (en) * 2013-08-27 2015-03-05 徐州重型机械有限公司 Single-acting pin-type telescoping arm, telescoping method thereof, and crane having the telescoping 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
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CN104129725A (en) * 2014-08-21 2014-11-05 徐州重型机械有限公司 Single-cylinder pin type telescopic arm, telescopic method and crane
CN104773653A (en) * 2015-04-08 2015-07-15 徐州重型机械有限公司 Telescopic control method, system and telescopic arm structure of single-cylinder plug pin of 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
CN106256751A (en) * 2015-06-17 2016-12-28 徐工集团工程机械股份有限公司 The control method of single-cylinder bolt type telescopic boom arm pin back-off and system and crane
CN106495033B (en) * 2016-12-30 2018-08-28 徐州重型机械有限公司 Crane arm and crane with it
CN106495033A (en) * 2016-12-30 2017-03-15 徐州重型机械有限公司 Crane arm and the crane with which
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
CN108116995A (en) * 2017-09-30 2018-06-05 陈奕松 A kind of locking device of telescoping boom, telescoping boom, crane and its flexible locking means
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
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

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