CN105417411A - Telescopic boom structure based on multi-stage oil cylinder and crane - Google Patents
Telescopic boom structure based on multi-stage oil cylinder and crane Download PDFInfo
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- CN105417411A CN105417411A CN201511025897.4A CN201511025897A CN105417411A CN 105417411 A CN105417411 A CN 105417411A CN 201511025897 A CN201511025897 A CN 201511025897A CN 105417411 A CN105417411 A CN 105417411A
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- Prior art keywords
- arm
- telescopic
- stage
- oil cylinder
- joint
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
Abstract
The invention discloses a telescopic boom structure based on a multi-stage oil cylinder and a crane, and relates to the field of engineering machinery. The telescopic boom structure is used for optimizing an existing telescopic boom structure. The telescopic boom structure comprises multiple telescopic booms and the multi-stage oil cylinder; the multi-stage oil cylinder is connected with the telescopic booms and at least can directly drive two of the telescopic booms to telescope. According to the telescopic boom structure, by adopting the multi-stage oil cylinder to drive the telescopic booms to telescope, the oil cylinder number is decreased, and therefore the weight and cost of the telescopic structure are lowered; in addition, part or complete of a rope row structure can be omitted, therefore, the phenomenon that rope row stress is multiplied is reduced, and the hoisting capacity of hoisting equipment where the telescopic boom structure is located is enlarged.
Description
Technical field
The present invention relates to engineering machinery field, be specifically related to a kind of telescopic arm structure based on multi-stage oil cylinder and hoisting crane.
Background technology
At present, row's formula of restricting telescoping mechanism mainly contains two kinds of forms: single cylinder rope row's formula and twin-tub rope row formula.Single cylinder rope row formula telescoping mechanism is made up of a telescopic oil cylinder and some steel ropes, pulley, is widely used in the arm that four joints are following; Twin-tub rope row formula telescoping mechanism is made up of two telescopic oil cylinders and some steel ropes, pulley, can realize five joints and stretching with upper boom portion in theory, be mainly used in the arm of five joint arms at present.
Rope row formula telescoping mechanism: primarily of compositions such as telescopic oil cylinder, steel rope, pulleys, be the critical component of Telescopic crane, flexible and carrying during lift heavy of its crane arm is all realized by telescoping mechanism.
Twin-tub rope row formula telescoping mechanism composition: it comprises a joint arm 101, two joint arms 102, three joint arms 103, four joint arms 104, five joint arms 105, six joint arms 106, first telescopic oil cylinder 107, second telescopic oil cylinder 108, first fixed pulley 109, second fixed pulley 110, 3rd fixed pulley 111, 4th fixed pulley 112, 5th fixed pulley 113, 6th fixed pulley 114, first stretches out steel rope 115, second stretches out steel rope 116, 3rd stretches out steel rope 117, first pulls back steel rope 118, second steel rope 119 and the 3rd of pulling back is pulled back steel rope 120.
Twin-tub rope row formula telescoping mechanism principle of work: as shown in Figure 1, a joint arm 101 be fixing basic arm, and other save the mutually nested successively and relative telescopic of arms.First telescopic oil cylinder 107 is arranged in a joint arm 101 and two and saves between arm 102, and the flexible of the first telescopic oil cylinder 107 can drive the flexible of the relative joint arm 101 of two joint arms 102; In like manner, the second telescopic oil cylinder 108 is arranged in two joint arms 102 and three and saves between arm 103, and the flexible of the second telescopic oil cylinder 108 can drive the flexible of the relative two joint arms 102 of three joint arms 103.While arms 103 stretch out three joints, be fixed on two joint arms 102 and four and save first of arm 104 afterbody and stretch out steel rope 115 and pull four joint arms 104 by the first fixed pulley 109 being fixed on the second telescopic oil cylinder 108 head, make it relative three save arms 103 and stretch out; In like manner, when four joint arms 104 stretch out, be fixed on three joint arms 103 and five and save second of arm 105 afterbody and stretch out steel rope 116 and pull five joint arms 105 by the second fixed pulley 110 being fixed on four joint arm 104 heads, make it relative four save arms 104 and stretch out; Five joint arms 105 are when stretching out, and are fixed on four joint arms 104 and six and save the 3rd of arm 106 afterbody and stretch out steel rope 117 and pull six joint arms 106 by the 3rd fixed pulley 111 being fixed on five joint arm 105 heads, make it relative five save arms 105 and stretch out.Retracting action is by steel rope and the fixed pulley realization of pulling back, and working process is contrary with extend action.
Contriver finds, at least there is following problems in prior art: existing twin-tub rope row formula telescoping mechanism is made up of two telescopic oil cylinders, from great, cost is high.
Summary of the invention
One of them object of the present invention proposes a kind of telescopic arm structure based on multi-stage oil cylinder and hoisting crane, in order to optimize existing telescopic arm structure.
For achieving the above object, the invention provides following technical scheme:
The invention provides a kind of telescopic arm structure based on multi-stage oil cylinder, comprise multi-stage telescopic arms and multi-stage oil cylinder, described multi-stage oil cylinder is connected with described multi-stage telescopic arms, and described multi-stage oil cylinder at least can stretch by two joint telescopic booms in multi-stage telescopic arms described in Direct driver.
In an alternate embodiment of the invention, telescopic arm structure also comprises transmission device; Described multi-stage oil cylinder is two-level oil cylinder, and the two joint arms, three that described multi-stage oil cylinder is arranged on described multi-stage telescopic arms save between arms and four joint arms; Described multi-stage oil cylinder can drive described three joint arms and described four joint arms to stretch;
Described transmission device stretches along with described three joint arms and described four save arms for driving described multi-stage telescopic arms other telescopic booms except a joint arm.
In an alternate embodiment of the invention, described transmission device comprises first and stretches out transmission component and second and stretch out transmission component;
Described first stretches out transmission component is arranged on a described joint arm, between two joint arms and three joint arms, stretches out transmission component drive described two joint arms to stretch out when described three joint arms stretch out by described first;
Described second stretches out transmission component is arranged between described three joint arms to minor details arm, stretches out transmission component drive five of described multi-stage telescopic arms joint arms to stretch out to the minor details arm of described multi-stage telescopic arms when described four joint arms stretch out by described second.
In an alternate embodiment of the invention, described transmission device comprises the first retraction transmission component and the second retraction transmission component;
Described first retraction transmission component is arranged on a described joint arm, between two joint arms and three joint arms, stretches out transmission component drive described two joint arm retractions during described three joint arm retraction by described first;
Described second retraction transmission component is arranged between described three joint arms to minor details arm, stretches out transmission component drive five of described multi-stage telescopic arms joint arms to bounce back to the minor details arm of described multi-stage telescopic arms during described four joint arm retraction by described second.
In an alternate embodiment of the invention, telescopic arm structure also comprises for the oil supply structure for described multi-stage oil cylinder fuel feeding.
In an alternate embodiment of the invention, described oil supply structure is towing chain device;
The arm tail cavity connects of arm is saved in one end of described towing chain device and of described multi-stage telescopic arms, and the other end of described towing chain device is communicated with described multi-stage oil cylinder; Or, one end of described towing chain device with extend to the outside that one of described multi-stage telescopic arms saves arm, the other end of described towing chain device is communicated with described multi-stage oil cylinder.
In an alternate embodiment of the invention, described oil supply structure is roll device;
Described roll device comprises reel and fuel feed pipe, and the one ends wound of described fuel feed pipe is on described reel, and the other end of described fuel feed pipe is communicated with described multi-stage oil cylinder.
In an alternate embodiment of the invention, the cylinder barrel energy independent telescopes at different levels of described multi-stage oil cylinder.
In an alternate embodiment of the invention, described multi-stage telescopic arms comprises 6 to 8 joint telescopic booms.
The present invention provides again a kind of hoisting crane, and it comprises the telescopic arm structure that the arbitrary technical scheme of the present invention provides.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Technique scheme, by adopting multi-stage oil cylinder to drive multi-stage telescopic arms to stretch, decreasing oil cylinder quantity and then reducing weight and the cost of telescoping mechanism; And part or all of rope row structure can be saved, reduce the phenomenon of the stressed multiplication of rope row with this, expand the crane capacity of telescopic arm structure place weight-lifting equipment.
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 is that in prior art, twin-tub adds rope row formula telescoping mechanism schematic diagram;
The schematic diagram of the telescopic arm structure that Fig. 2 provides for the embodiment of the present invention one;
The independent overhanging schematic diagram of three joint arms that Fig. 3 is telescopic arm structure shown in Fig. 2;
The independent overhanging schematic diagram of four joint arms that Fig. 4 is telescopic arm structure shown in Fig. 2;
The synchronous overhanging disassembling operation view that Fig. 5 is telescopic arm structure shown in Fig. 2;
The schematic diagram of the telescopic arm structure that Fig. 6 provides for the embodiment of the present invention two.
Reference numeral:
1, a joint arm; 2, two joint arms; 3, three joint arms;
4, four joint arms; 5, five joint arms; 6, six joint arms;
7, multi-stage oil cylinder; 8, the first fixed pulley; 9, the second fixed pulley;
10, the 3rd fixed pulley; 11, the 4th fixed pulley; 12, the 5th fixed pulley;
13, the 6th fixed pulley; 21, roll device; 15, second stretches out steel rope;
16, the 3rd stretches out steel rope; 73, final stage cylinder barrel; 18, second to pull back steel rope;
19, the 3rd to pull back steel rope; 20, towing chain device; 14, first stretches out steel rope;
71, piston rod; 72, middle cylinder barrel; 17, first to pull back steel rope;
101, a joint arm; 102, two joint arms; 103, three joint arms;
104, four joint arms; 105, five joint arms; 106, six joint arms;
107, the first telescopic oil cylinder; 108, the second telescopic oil cylinder; 109, the first fixed pulley;
110, the second fixed pulley; 111, the 3rd fixed pulley; 112, the 4th fixed pulley;
113, the 5th fixed pulley; 114, the 6th fixed pulley; 115, first stretches out steel rope;
116, second stretches out steel rope; 117, the 3rd stretches out steel rope;
118, the first steel rope 119, second of pulling back is pulled back steel rope
120, the 3rd to pull back steel rope.
Detailed description of the invention
Below in conjunction with the elaboration that Fig. 2 ~ Fig. 6 carries out specifically to technical scheme provided by the invention.
Title herein or terminological interpretation.
Multi-stage oil cylinder: i.e. multi-stage expansion hydraulic ram, be set with by two or more piston-type hydraulic cylinder and form, the piston rod of previous stage piston cylinder is the cylinder barrel of rear stage piston cylinder, and compact conformation takes up room little, can obtain longer forced stroke.For direction shown in Fig. 2, previous stage piston cylinder is the piston cylinder being positioned at right side, and rear stage piston cylinder is the piston cylinder being positioned at left side.
See Fig. 2 to Fig. 5, the embodiment of the present invention one provides a kind of telescopic arm structure, and comprise multi-stage telescopic arms and multi-stage oil cylinder 7, multi-stage oil cylinder 7 is connected with multi-stage telescopic arms, and multi-stage oil cylinder 7 at least can stretch by two joint telescopic booms in Direct driver multi-stage telescopic arms.
Direct driver refers to that multi-stage oil cylinder 7 is flexible and can directly take telescopic boom to and stretch, and does not need the transmission device by wire rope pulley group, chain pulley group or other types.
The quantity of the telescopic boom included by multi-stage telescopic arms is better between 6 joints to 8 joints.In the embodiment of the present invention one, to have 6 joint telescopic booms, multi-stage telescopic arms comprises a joint arm 1, two and saves arm 2, three joint arm 3, four joint arm 4 and five joint arms 5 and six joint arms 6.Nested successively between 6 joint telescopic booms, namely two joint arms 2 are enclosed within joint arm 1 inside, and it is inner that three joint arms 3 are enclosed within two joint arms 2, and by that analogy, it is inner that six joint arms 6 are enclosed within five joint arms 5.In the present embodiment, be only provided with a multi-stage oil cylinder 7.For direction shown in Fig. 2, the right side of each telescopic boom is " arm head ", and left side is " arm tail ".
Technique scheme, by adopting multi-stage oil cylinder 7 to drive multi-stage telescopic arms to stretch, decreasing oil cylinder quantity and then reducing weight and the cost of telescoping mechanism; And part or all of rope row structure can be saved, reduce the phenomenon of the stressed multiplication of rope row with this, expand the crane capacity of telescopic arm structure place weight-lifting equipment.
Further, telescopic arm structure also comprises transmission device; Multi-stage oil cylinder 7 is two-level oil cylinder, and the two joint arms 2, three that multi-stage oil cylinder 7 is arranged on multi-stage telescopic arms save between arm 3 and four joint arms 4; Multi-stage oil cylinder 7 can drive three joint arms 3 and four joint arms 4 to stretch.Transmission device stretches along with three joint arms 3 and four joint arms 4 for driving multi-stage telescopic arms other telescopic booms except a joint arm 1.
In the present embodiment, multi-stage telescopic arms comprises 6 joint telescopic booms, and a joint arm 1 does not stretch, and three joint arms 3, four save arm 4 and directly driven flexible by multi-stage oil cylinder 7; Two joint arms, five joint arms, six joint arms are driven flexible by first, second transmission device.Other telescopic booms i.e. two joint arms, five joint arms and six joint arms.
See Fig. 2 and Fig. 3, multi-stage oil cylinder 7 comprises piston rod 71, middle cylinder barrel 72 and final stage cylinder barrel 73.Piston rod 71 and two saves arm 2 and is connected, and middle cylinder barrel 72 and three saves arm 3 and is connected, and final stage cylinder barrel 73 and four saves arm 4 and is connected.
Adopt two-level oil cylinder herein, and two-level oil cylinder is arranged between two joint arms 2, three joint arms 3 and four joint arms 4, make cylinder structure can not be too complicated first, second steel rope is effectively reduced repeatedly around the cumulative load after pulley, and then reduce the weight of oil cylinder and arm, improve the lifting performance of car load, achieve the light-weight design of telescopic arm structure.
See Fig. 2, transmission device comprises first and stretches out transmission component and second and stretch out transmission component.First stretches out transmission component is arranged between joint arm 1, a two joint arm 2 and three joint arms 3, stretches out transmission component drive two joint arms 2 to stretch out when three joint arms 3 stretch out by first.Second stretches out transmission component is arranged between three joint arm 3 to minor details arms, stretches out transmission component drive the minor details arm of five of multi-stage telescopic arms joint arm 5 to multi-stage telescopic arms to stretch out when four joint arms 4 stretch out by second.
Telescopic arm structure to stretch out principle as follows:
See Fig. 2 and Fig. 3, first stretches out transmission component and second stretches out transmission component and can adopt wire rope pulley group structure.First stretches out transmission component comprises first and stretches out steel rope 14 and the first fixed pulley 8, first fixed pulley 8 is fixed on the arm tail of two joint arms 2, first one end of stretching out steel rope 14 is fixed on the arm head of a joint arm 1, and the other end is fixed on the arm tail of three joint arms 3, and the first fixed pulley 8 is walked around at middle part.While arms 3 stretch out three joints, be fixed on joint arm 1 arm head and three and save first of arm 3 arm tail and stretch out steel rope 14 and pull two joint arms 2 by the first fixed pulley 8 being fixed on two joint arm 2 arm tails, make it relative one save arm 1 and stretch out.
See Fig. 2 and Fig. 4, second stretches out transmission component comprises second and stretches out steel rope 15 and the second fixed pulley 9.Second two ends of stretching out steel rope 15 are individually fixed in the arm tail of three joint arms 3 and five joint arms 5.Second fixed pulley 9 is fixed on the arm head of the final stage cylinder barrel 73 of multi-stage oil cylinder 7, for direction shown in Fig. 3, and the right-hand member of arm head and final stage cylinder barrel 73.When final stage cylinder barrel 73 drives four joint arms 4 to stretch out, be fixed on three joint arms 3 and five and save second of arm 5 arm tail and stretch out steel rope 15 and pull five joint arms 5 by the second fixed pulley 9 being fixed on multi-stage oil cylinder 7 arm head, its relative four joint arms 4 are stretched out.
See Fig. 2 and Fig. 4, five joint arms drive the processes of six joint arm actions to can refer to following manner: second stretches out transmission component also comprises the 3rd and stretch out steel rope 16 and the 3rd fixed pulley 10.Five joint arms 5 are when stretching out, and are fixed on four joint arms 4 and six and save the 3rd of arm 6 arm tail and stretch out steel rope 16 and pull six joint arms 6 by the 3rd fixed pulley 10 being fixed on five joint arm 5 arm heads, make it relative five save arms 5 and stretch out, as accompanying drawing 4.
From said process, three joint arms 3 and four save arm 4 when synchronously stretching out, and all the other save arms and also synchronously stretch out thereupon and namely realize synchronously stretching out of whole arm, and disassembling operation as shown in Figure 5.Retracting action is by steel rope and the fixed pulley realization of pulling back, and working process is contrary with extend action, is specifically described as follows.
Further, transmission device comprises the first retraction transmission component and the second retraction transmission component.First retraction transmission component is arranged on a joint arm 1, two and saves between arm 2 and three joint arms 3, stretches out transmission component drive two joint arms 2 to bounce back when three joint arms 3 bounce back by first.Second retraction transmission component is arranged between three joint arm 3 to minor details arms, stretches out the minor details arm retraction that transmission component drives five joint arm 5 to multi-stage telescopic arms of multi-stage telescopic arms when four joint arms 4 bounce back by second.
The retraction principle of telescopic arm structure is as follows:
See Fig. 2, the first retraction transmission component comprises first and to pull back steel rope 17 and the 4th fixed pulley 11.The arm tail that arm 1 is saved in first one end and of pulling back steel rope 17 is fixed, and the arm tail that the other end and three saves arm 3 is fixed, and the 4th fixed pulley 11 is walked around in centre.4th fixed pulley 11 is fixed on the arm head of two joint arms 2.By the first retraction transmission component, realize three joint arms 3 when bouncing back, drive two joint arms 2 to bounce back.
See Fig. 2, the second retraction transmission component comprises second and to pull back steel rope 18 and the 5th fixed pulley 12.Second pull back one end of steel rope 18 and three arm heads saving arm 3 are fixed, and the arm tail that the other end and five saves arm 5 is fixed, and the 5th fixed pulley 12 is walked around in centre.5th fixed pulley 12 is fixed on the arm tail of four joint arms 4.To pull back steel rope 18 and the 5th fixed pulley 12 by second, realize four joint arms 4 when bouncing back, drive five joint arms 5 to bounce back.
See Fig. 2, the second retraction transmission component also comprises the 3rd and to pull back steel rope 19 and the 6th fixed pulley 13.The arm tail that arm 6 is saved in 3rd one end and six of pulling back steel rope 19 is fixed, and the arm head of the other end and final stage cylinder barrel 73 is fixed.To pull back steel rope 19 and the 6th fixed pulley 13 by the 3rd, realize five joint arms 5 when bouncing back, drive six joint arms 6 to bounce back.
See Fig. 2, Fig. 3 or Fig. 4, in the present embodiment, telescopic arm structure also comprises for the oil supply structure for multi-stage oil cylinder 7 fuel feeding.Save between arms 3 and four joint arms 4 owing to multi-stage oil cylinder 7 to be arranged in the present embodiment two joint arms 2, three, how hydraulic oil being passed to multi-stage oil cylinder 7 is more difficult problems, arranges oil supply structure herein, the oil circuit of multi-stage oil cylinder 7 is arranged and greatly simplifies.
In the present embodiment, oil supply structure is towing chain device 20.The arm tail cavity connects of arm 1 is saved in one end of towing chain device 20 and of multi-stage telescopic arms, and the other end of towing chain device 20 is communicated with multi-stage oil cylinder 7.Or, one end of towing chain device 20 with extend to the outside that one of multi-stage telescopic arms saves arm 1, the other end of towing chain device 20 is communicated with multi-stage oil cylinder 7, is example in the present embodiment in this way.
Further, the cylinder barrel energy independent telescopes at different levels of multi-stage oil cylinder 7, in the present embodiment, namely cylinder barrel 72 and final stage cylinder barrel 73 energy independent telescope in the middle of, what so can make cylinder barrel at different levels is convenient to control, and the synchronization telescope of cylinder barrel at different levels can be realized, multi-stage oil cylinder 7 synchronization telescope can realize the synchronous complete flexible of whole arm, and operating efficiency is high.
See Fig. 6, technical scheme and the technical scheme of above-described embodiment one of the embodiment of the present invention two have following different: in the present embodiment, and oil supply structure adopts roll device 21.Specifically, oil supply structure is roll device 21; Roll device 21 comprises reel and fuel feed pipe, and the one ends wound of fuel feed pipe is on reel, and the other end of fuel feed pipe is communicated with multi-stage oil cylinder 7.Spool turns can be wound around or decontrol fuel feed pipe.
Another embodiment of the present invention also provides a kind of hoisting crane, comprises the telescopic arm structure that the arbitrary technical scheme of the present invention provides.
In describing the invention; it will be appreciated that; term " orientation or the position relationship of the instruction such as " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only for ease of describing the present invention and simplified characterization; instead of indicate or infer the device of indication or element must have specific orientation, be specific azimuth configuration and operation, thus can not be interpreted as restriction the present invention being protected to content.
If employ the word such as " first ", " second " herein to limit parts, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe the present invention and simplified characterization, as do not stated in addition, the implication that above-mentioned word is not special.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or equivalent replacement is carried out to wherein portion of techniques feature, but these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the telescopic arm structure based on multi-stage oil cylinder, it is characterized in that, comprise multi-stage telescopic arms and multi-stage oil cylinder (7), described multi-stage oil cylinder (7) is connected with described multi-stage telescopic arms, and described multi-stage oil cylinder (7) at least can stretch by two joint telescopic booms in multi-stage telescopic arms described in Direct driver.
2. telescopic arm structure according to claim 1, is characterized in that, also comprises transmission device; Described multi-stage oil cylinder (7) is two-level oil cylinder, and two joints arm (2), three that described multi-stage oil cylinder (7) is arranged on described multi-stage telescopic arms save between arm (3) and four joints arm (4); Described multi-stage oil cylinder (7) can drive described three joints arm (3) and described four joints arm (4) to stretch;
Described transmission device stretches along with described three joints arm (3) and described four save arm (4) for driving described multi-stage telescopic arms other telescopic booms except joint arm (1).
3. telescopic arm structure according to claim 2, is characterized in that, described transmission device comprises first and stretches out transmission component and second and stretch out transmission component;
Described first stretches out transmission component is arranged on described joint arm (1), between two joints arm (2) and three joints arm (3), stretches out transmission component drive described two joints arm (2) to stretch out when described three joints arm (3) stretch out by described first;
Described second stretches out transmission component is arranged between described three joints arm (3) to minor details arm, stretches out transmission component drive five of described multi-stage telescopic arms joints arm (5) to stretch out to the minor details arm of described multi-stage telescopic arms when described four joints arm (4) stretch out by described second.
4. telescopic arm structure according to claim 2, is characterized in that, described transmission device comprises the first retraction transmission component and the second retraction transmission component;
Described first retraction transmission component is arranged on described joint arm (1), between two joints arm (2) and three joints arm (3), stretches out transmission component drive described two joint arm (2) retractions during described three joint arm (3) retraction by described first;
Described second retraction transmission component is arranged between described three joints arm (3) to minor details arm, stretches out transmission component drive five of described multi-stage telescopic arms joints arm (5) to bounce back to the minor details arm of described multi-stage telescopic arms during described four joint arm (4) retraction by described second.
5. telescopic arm structure according to claim 2, is characterized in that, also comprises for the oil supply structure for described multi-stage oil cylinder (7) fuel feeding.
6. telescopic arm structure according to claim 5, is characterized in that, described oil supply structure is towing chain device (20);
The arm tail cavity connects of arm (1) is saved in one end of described towing chain device (20) and of described multi-stage telescopic arms, and the other end of described towing chain device (20) is communicated with described multi-stage oil cylinder (7); Or, one end of described towing chain device (20) with extend to the outside that one of described multi-stage telescopic arms saves arm (1), the other end of described towing chain device (20) is communicated with described multi-stage oil cylinder (7).
7. telescopic arm structure according to claim 5, is characterized in that, described oil supply structure is roll device (21); Described roll device (21) comprises reel and fuel feed pipe, and the one ends wound of described fuel feed pipe is on described reel, and the other end of described fuel feed pipe is communicated with described multi-stage oil cylinder (7).
8., according to the arbitrary described telescopic arm structure of claim 1-7, it is characterized in that, the cylinder barrel energy independent telescopes at different levels of described multi-stage oil cylinder (7).
9. according to the arbitrary described telescopic arm structure of claim 1-7, it is characterized in that, described multi-stage telescopic arms comprises 6 to 8 joint telescopic booms.
10. a hoisting crane, is characterized in that, comprises the arbitrary described telescopic arm structure of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025897.4A CN105417411A (en) | 2015-12-31 | 2015-12-31 | Telescopic boom structure based on multi-stage oil cylinder and crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025897.4A CN105417411A (en) | 2015-12-31 | 2015-12-31 | Telescopic boom structure based on multi-stage oil cylinder and crane |
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| CN105417411A true CN105417411A (en) | 2016-03-23 |
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| CN106915711A (en) * | 2017-03-30 | 2017-07-04 | 浙江大学 | A kind of single lowering or hoisting gear for driving multistage synchronization lifting |
| CN109179226A (en) * | 2018-11-26 | 2019-01-11 | 广东电网有限责任公司 | A kind of lightweight rack-driving telescopic arm |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN112723266A (en) * | 2021-01-18 | 2021-04-30 | 徐工消防安全装备有限公司 | Multi-section-arm synchronous telescopic mechanism and fire fighting truck |
| CN113682981A (en) * | 2021-09-09 | 2021-11-23 | 大洋泊车股份有限公司 | Flexible arm of platform fire engine ascends a height |
| CN114950812A (en) * | 2022-06-24 | 2022-08-30 | 上海外高桥造船有限公司 | Telescopic equipment for ship spraying |
| CN110745721B (en) * | 2019-11-30 | 2024-04-19 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
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| CN106915711A (en) * | 2017-03-30 | 2017-07-04 | 浙江大学 | A kind of single lowering or hoisting gear for driving multistage synchronization lifting |
| CN109179226A (en) * | 2018-11-26 | 2019-01-11 | 广东电网有限责任公司 | A kind of lightweight rack-driving telescopic arm |
| CN109179226B (en) * | 2018-11-26 | 2023-08-25 | 广东电网有限责任公司 | Lightweight rack transmission telescopic arm |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN110745721B (en) * | 2019-11-30 | 2024-04-19 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN112723266A (en) * | 2021-01-18 | 2021-04-30 | 徐工消防安全装备有限公司 | Multi-section-arm synchronous telescopic mechanism and fire fighting truck |
| CN113682981A (en) * | 2021-09-09 | 2021-11-23 | 大洋泊车股份有限公司 | Flexible arm of platform fire engine ascends a height |
| CN113682981B (en) * | 2021-09-09 | 2023-03-10 | 大洋泊车股份有限公司 | Flexible arm of platform fire engine ascends a height |
| CN114950812A (en) * | 2022-06-24 | 2022-08-30 | 上海外高桥造船有限公司 | Telescopic equipment for ship spraying |
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Application publication date: 20160323 |