CN105384091A - Telescopic boom structure with a multilevel independent telescopic cylinder and crane - Google Patents
Telescopic boom structure with a multilevel independent telescopic cylinder and crane Download PDFInfo
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- CN105384091A CN105384091A CN201511029459.5A CN201511029459A CN105384091A CN 105384091 A CN105384091 A CN 105384091A CN 201511029459 A CN201511029459 A CN 201511029459A CN 105384091 A CN105384091 A CN 105384091A
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a telescopic boom structure with a multilevel independent telescopic cylinder and a crane, relates to the field of engineering machinery, and is used for realizing the simultaneous expansion and retraction of multiple sections of telescopic booms. The telescopic boom structure comprises the multiple sections of telescopic booms and a multilevel cylinder which is used for driving at least two of the multiple sections of telescopic booms to expand and retract, wherein various levels of cylinder barrels of the multilevel cylinder can independently expand and retract. By adopting the technical scheme, the multilevel cylinder drives the telescopic booms, and the cylinder barrels of the multilevel cylinder can be independently controlled, so when the multiple sections of telescopic booms need to be simultaneously expanded, the simultaneous expansion and retraction of the various levels of telescopic booms can be realized through the various levels of cylinder barrels.
Description
Technical field
The present invention relates to engineering machinery field, be specifically related to a kind of telescopic arm structure with multistage independent telescope 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.
See Fig. 1, twin-tub adds that rope row formula telescoping mechanism composition comprises the first telescopic oil cylinder 106, second telescopic oil cylinder 107, first fixed pulley 108, second fixed pulley 109, the 3rd fixed pulley 110, the 4th fixed pulley 111, first stretch out steel rope (i.e. rope row steel rope) 112, second and stretch out steel rope 114, first steel rope 113, second of pulling back and to pull back steel rope 115, basic arm 101, first telescopic boom 102, second telescopic boom 103, the 3rd telescopic boom 104 and the 4th telescopic boom 105.
As shown in Figure 1, it is as follows that twin-tub adds row's formula telescoping mechanism principle of work of restricting: this telescoping mechanism adds steel rope by two telescopic oil cylinder and coordinates fixed pulley to form, and forms two and overlaps independently telescoping mechanism.First set telescoping mechanism is stretched by the first telescopic oil cylinder 106 control realization first telescopic boom 102.Second cover telescoping mechanism stretches out steel rope 112, second by the second telescopic oil cylinder 107, first fixed pulley 108, second fixed pulley 109, the 3rd fixed pulley 110, the 4th fixed pulley 111, first and stretches out steel rope 114, first steel rope 113, second steel rope 115 of pulling back of pulling back and form to come control realization.By first set telescoping mechanism, the first telescopic boom 102 can be realized and stretch; By the second cover telescoping mechanism, the second telescopic boom 103 can be realized, the 3rd telescopic boom 104, the 4th telescopic boom 105 stretch.
Contriver finds, at least there is following problems in prior art: adopt two single-stage oil cylinders in prior art, two single-stage oil cylinders control respectively, can not realize the simultaneous retractable of each joint telescopic boom.
Summary of the invention
One of them object of the present invention proposes a kind of telescopic arm structure with multistage independent telescope oil cylinder and hoisting crane, in order to realize the simultaneous retractable of multi-stage telescopic arms.
For achieving the above object, the invention provides following technical scheme:
The invention provides a kind of telescopic arm structure with multistage independent telescope oil cylinder, comprise multi-stage telescopic arms and multi-stage oil cylinder, multi-stage oil cylinder stretches for driving at least two joint telescopic booms of multi-stage telescopic arms, wherein, and the cylinder barrel energy independent telescopes at different levels of multi-stage oil cylinder.
In an alternate embodiment of the invention, multi-stage oil cylinder comprises piston rod assembly, middle cylinder cartridge module and final stage cylinder barrel; Piston rod assembly is slidably installed in middle cylinder cartridge module, and middle cylinder cartridge module is slidably installed in final stage cylinder barrel; The separate work of large chamber oil circuit of middle cylinder cartridge module and final stage cylinder barrel, the separate work of loculus oil circuit of middle cylinder cartridge module and final stage cylinder barrel.
In an alternate embodiment of the invention, piston rod assembly comprises piston rod and is arranged on the first stage piston of piston rod one end, and first stage piston is slidably installed on the inwall of middle cylinder cartridge module.
In an alternate embodiment of the invention, middle cylinder cartridge module comprises middle cylinder barrel and is arranged on the intermediate piston of middle cylinder barrel end; Intermediate piston is slidably installed on the inwall of final stage cylinder barrel.
In an alternate embodiment of the invention, the piston rod head of piston rod is provided with the first oil circuit, the second oil circuit and the 3rd oil circuit; First oil circuit is communicated with the large chamber of middle cylinder cartridge module; Second oil circuit is communicated with the large chamber of final stage cylinder barrel;
3rd oil circuit is communicated with the loculus of middle cylinder cartridge module with final stage cylinder barrel;
Telescopic arm structure also comprises control cock group, and control cock group is connected with the first oil circuit, the second oil circuit and the 3rd oil circuit, for controlling the independent telescope of the cylinder barrels at different levels of multi-stage oil cylinder.
In an alternate embodiment of the invention, control cock group comprises the first balance cock and the second balance cock; First balance cock is located on the first oil circuit, and the second balance cock is located on the second oil circuit; 3rd oil circuit is communicated with the control end of the first balance cock with the second balance cock.
In an alternate embodiment of the invention, telescopic arm structure also comprises the first core pipe, and one end of the first core pipe is communicated with the large chamber of middle cylinder cartridge module by the through hole on first stage piston, and the other end of the first core pipe is communicated with the first oil circuit.
In an alternate embodiment of the invention, telescopic arm structure also comprises the second core pipe, and one end of the second core pipe is communicated with the large chamber of final stage oil cylinder by the through hole on intermediate piston, and the other end of the second core pipe is communicated with the second oil circuit.
In an alternate embodiment of the invention, telescopic arm structure also comprises the 3rd core pipe, and one end of the 3rd core pipe is all communicated with the loculus of middle cylinder cartridge module with final stage cylinder barrel, and the other end of the 3rd core pipe is communicated with the 3rd oil circuit.
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.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Technique scheme, drives telescopic boom by multi-stage oil cylinder, and the cylinder barrel of multi-stage oil cylinder can independently control, and when needs stretch out multi-stage telescopic arms simultaneously, realizes the simultaneous retractable of telescopic boom at different levels by cylinder barrel at different levels, to improve flexible efficiency.
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;
Fig. 3 is the independent overhanging schematic diagram of two joint arms in Fig. 2;
Fig. 4 is the independent overhanging schematic diagram of three, four, five joint arms in Fig. 2;
Fig. 5 is the synchronously overhanging disassembling operation schematic diagram of multi-stage telescopic arms shown in Fig. 2;
Fig. 6 is multi-stage oil cylinder schematic diagram in Fig. 2;
The schematic diagram of the telescopic arm structure that Fig. 7 provides for the embodiment of the present invention two.
Detailed description of the invention
Below in conjunction with the elaboration that Fig. 2 ~ Fig. 7 carries out specifically to technical scheme provided by the invention.
Title used 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, compact conformation takes up room little, longer forced stroke can be obtained, this sentences the lifting end of telescopic boom for " front ", and coupling end is " afterwards ".
See Fig. 2 and Fig. 6, the embodiment of the present invention one provides a kind of telescopic arm structure, comprises multi-stage telescopic arms and multi-stage oil cylinder 6, and multi-stage oil cylinder 6 stretches for driving at least two joint telescopic booms of multi-stage telescopic arms, wherein, and the cylinder barrel energy independent telescopes at different levels of multi-stage oil cylinder 6.
The cylinder barrels at different levels that can be respectively multi-stage oil cylinder 6 arrange independently oil circuit and, to realize its independent telescope, or realize the independent telescope of cylinder barrel at different levels by arranging control cock group etc.
The quantity of the telescopic boom included by multi-stage telescopic arms is better between 5 joints to 7 joints.In the utility model embodiment one, to have 5 joint telescopic booms, multi-stage telescopic arms comprises a joint arm 1, two and saves arm 2, three joint arm 3 ... five joint arms 5.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 five joint arms 5 are enclosed within four joint arms 4.
If the quantity of the telescopic boom that need stretch is consistent with the cylinder barrel quantity of multi-stage oil cylinder 6, a cylinder barrel can be directly used to drive a telescopic boom.If the quantity of cylinder barrel is less than the telescopic boom quantity that need stretch, the telescopic boom that driving device can be used to transfer a driving force to each joint need stretch.
Technique scheme, drives telescopic boom by multi-stage oil cylinder 6, and the cylinder barrel of multi-stage oil cylinder 6 can independently control, and when needs stretch out multi-stage telescopic arms simultaneously, realizes the simultaneous retractable of telescopic boom at different levels by cylinder barrel at different levels.In addition, technique scheme application multi-stage oil cylinder 6, decreases oil cylinder quantity and then reduces weight and the cost of telescoping mechanism.Multi-stage oil cylinder 6 synchronization telescope can realize the synchronous complete flexible of whole arm, and operating efficiency is high.
See Fig. 2 and Fig. 6, multi-stage oil cylinder 6 comprises piston rod assembly, middle cylinder cartridge module and final stage cylinder barrel 61.Piston rod assembly is slidably installed in middle cylinder cartridge module, and middle cylinder cartridge module is slidably installed in final stage cylinder barrel 61; The large chamber S1 of middle cylinder cartridge module and the separate work of large chamber S3 oil circuit of final stage cylinder barrel 61, the loculus S2 of middle cylinder cartridge module and the separate work of loculus S4 oil circuit of final stage cylinder barrel 61.
See Fig. 2 and Fig. 6, middle cylinder cartridge module comprises middle cylinder barrel 63 and intermediate piston 64, and intermediate piston 64 is slidably installed on the inwall of final stage cylinder barrel 61.Middle cylinder barrel 63 is provided with middle orienting sleeve 65 away from one end of intermediate piston 64.The end of final stage cylinder barrel 61 is provided with final stage orienting sleeve 62.Intermediate piston 64 is provided with seal ring 614.
Middle cylinder cartridge module can have multiple, mutually nested.For one in the present embodiment.Multi-stage oil cylinder 6 is specially two-level oil cylinder, and a joint arm 1, as basic arm, does not stretch; Two joint arms 2 to five save arm 5 and stretch, and except two, three joint arms 2,3 are directly connected with the cylinder barrel of multi-stage oil cylinder, four joint arms 4 to five save arm 5 all realizes saving with three arm 3 synchronization telescope by wire rope pulley group or chain pulley group drive mechanism.
See Fig. 6, the rearward end of middle cylinder cartridge module is provided with load contiguous block 2 616; The rearward end of final stage cylinder barrel 61 is provided with load contiguous block 1, to be connected with corresponding telescopic boom.When needing telescopic boom corresponding to middle cylinder cartridge module to stretch, directly to the large chamber S1 fuel feeding of middle cylinder cartridge module; When needing retraction, directly to the loculus S2 fuel feeding of middle cylinder cartridge module.
See Fig. 6, piston rod assembly comprises piston rod 67 and is arranged on the first stage piston 66 of piston rod 67 one end, and first stage piston 66 is slidably installed on the inwall of middle cylinder cartridge module.First stage piston 66 is provided with seal ring 614.See Fig. 6, the other end of piston rod 67 is provided with piston rod head 611, for arranging oil circuit control and control cock group, hereinafter will introduce herein.
See Fig. 6, middle cylinder cartridge module comprises middle cylinder barrel 63 and is arranged on the intermediate piston 64 of middle cylinder barrel 63 end; Intermediate piston 64 is slidably installed in the inwall of final stage cylinder barrel 61.
Introduce the specific implementation of each cylinder barrel independent telescope below.
See Fig. 6, the piston rod head 611 of piston rod 67 is provided with the first oil circuit (oil circuit that hydraulic fluid port A is corresponding), the second oil circuit (oil circuit that hydraulic fluid port B is corresponding) and the 3rd oil circuit (oil circuit that hydraulic fluid port C is corresponding); First oil circuit is communicated with the large chamber S1 of middle cylinder cartridge module; Second oil circuit is communicated with the large chamber S3 of final stage cylinder barrel 61.3rd oil circuit is all communicated with the loculus S4 of final stage cylinder barrel 61 with the loculus S2 of middle cylinder cartridge module.Telescopic arm structure also comprises control cock group, and control cock group is connected with the first oil circuit, the second oil circuit and the 3rd oil circuit, for controlling the independent telescope of the cylinder barrels at different levels of multi-stage oil cylinder 6.Control cock group realizes the independent telescope of cylinder barrel at different levels by the circulating direction of the break-make and fluid that control corresponding oil circuit.
In the present embodiment, control cock group comprises the first balance cock 612 and the second balance cock 613; First balance cock 612 is located on the first oil circuit, and the second balance cock 613 is located on the second oil circuit; 3rd oil circuit is communicated with the control end of the first balance cock 612 with the second balance cock 613.
Particularly, one end that telescopic arm structure also comprises the first core pipe 68, first core pipe 68 is communicated with the large chamber of middle cylinder cartridge module by the through hole on first stage piston 66, and the other end of the first core pipe 68 is communicated with the first oil circuit.
Further, one end that telescopic arm structure also comprises the second core pipe 610, second core pipe 610 is communicated with the large chamber of final stage oil cylinder by the through hole on intermediate piston 64, and the other end of the second core pipe 610 is communicated with the second oil circuit.
Herein, one end that telescopic arm structure also comprises the 3rd core pipe the 69, three core pipe 69 is all communicated with the loculus of middle cylinder cartridge module with final stage cylinder barrel 61, and the other end of the 3rd core pipe 69 is communicated with the 3rd oil circuit.
Provide a specific embodiment below.
See Fig. 2 to Fig. 6, telescopic arm structure mainly comprises that a joint arm 1, two saves that arm 2, three saves that arm 3, four saves that arm 4, five saves arm 5, multi-stage oil cylinder 6, first fixed pulley 7, second fixed pulley 8, the 3rd fixed pulley 9, the 4th fixed pulley 10, first stretch out steel rope 11, second and stretch out steel rope 12, first steel rope 13 and second of pulling back and to pull back steel rope 14.
Introduce the principle of work of telescopic arm structure below.As shown in Figure 2, multi-stage oil cylinder 6 is arranged in a joint arm 1 and two and saves arm 2, three and save between arm 3.The flexible of multi-stage oil cylinder 6 can Direct driver telescopic boom sequential telescopic or synchronization telescope.
While arms 3 stretch out three joints, be fixed on two joint arm afterbodys and four and save first of arm afterbody and stretch out steel rope 11 and pull four joint arms to stretch out, as shown in Figure 4.In like manner, when four joint arms 4 stretch out, be fixed on three joint arms 3 and five and save second of arm 5 afterbody and stretch out steel rope 12 and drive second to stretch out steel rope 12 by the second fixed pulley 8 to pull five joint arms 5.Therefore three joint arms 3 and four save arm 4, five saves arm 5 when synchronously stretching out, 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 realization of corresponding fixed pulley of respectively pulling back, and working process is contrary with extend action.
Introduce the structure of the multi-stage oil cylinder 6 used in this enforcement below.
See Fig. 6, use a kind of Novel two-stage telescopic hydraulic cylinder in the present embodiment, the independence that can realize two-stage cylinder barrel controls, and namely the independent control of middle cylinder cartridge module and final stage cylinder barrel 61, meets the demand of equipment.Concrete structure is: on piston rod head 611, offer A, B, C tri-hydraulic fluid ports, respectively corresponding first oil circuit, the second oil circuit and the 3rd oil circuit, and the first oil circuit inside is provided with on the first balance cock 612, second oil circuit and is provided with the second balance cock 613.The control port of the first balance cock 612 and the second balance cock 613 provides by the 3rd oil circuit.Second balance cock 613 is communicated with B mouth and central cores tube chamber S0; First balance cock 613 is communicated with hydraulic fluid port A and the first core pipe 68; C mouth is directly communicated with the 3rd core pipe 69.Middle cylinder barrel is made up of two-layer barrel, and middle formation oil duct, this oil duct has been communicated with first order cylinder loculus S2 and second stage cylinder loculus S4.In fact second core pipe 610 comprises inside and outside two parts, and inboard portion core pipe and intermediate piston 64 or middle cylinder barrel 63 are fixed, Outboard Sections and first stage piston 66 or piston rod 67 fixing, together constitute core tube chamber S0.In the present embodiment, fix with inboard portion and intermediate piston 64, Outboard Sections and first stage piston 66 are fixed as example.
The detailed telescopic process of this programme: if fix with piston rod assembly, so, cylinder barrel and final stage cylinder barrel 61 can be turned right and be carried out action and in like manner fix with final stage cylinder barrel 61, then in the middle of, cylinder barrel 63 and piston rod assembly are just toward left movement, and this situation illustrates no longer separately.
1, secondary telescopic hydraulic cylinder stretches out process
When in the middle of needs, cylinder barrel 63 stretches out, pressure oil enters from A mouth, then by the first balance cock 612, enters into the first core pipe 68 of piston rod 67 inside, then enter into the large chamber S1 of first order cylinder.The route of oil return is simultaneously as follows: the fluid in first order cylinder loculus S2 is flowed out from C mouth by the 3rd core pipe 69 of piston rod inner.In this process, the large chamber S1 of first order cylinder is constantly full of fluid, thus in the middle of realizing, cylinder barrel 63 stretches out together with final stage cylinder barrel 61.
Oil-feed simplifies route: A → S1
Oil return simplifies route: S2 → C
When needs final stage cylinder barrel 61 stretches out, pressure oil enters from B mouth, is entered into the central cores tube chamber S0 of piston rod 67 inside by the second balance cock 613, then enters into Gang great chamber, second stage S3.The route of oil return is simultaneously as follows: the fluid in the cylinder loculus S4 of the second stage passes through the internal galleries of middle cylinder barrel from C1 mouth out, enters into first order cylinder loculus S2, then passes through the 3rd core pipe 69 of piston rod 67 inside, flows out from C mouth.In this process, the large chamber S3 of secondary cylinder is constantly full of fluid, thus realizes the extend action of final stage cylinder barrel 61.
Oil-feed simplifies route: B → S0 → S3
Oil return simplifies route: S4 → C1 → S2 → C
2, secondary telescopic hydraulic cylinder retraction process
When needs final stage cylinder barrel 61 is retracted, pressure oil enters from C mouth, by the 3rd core pipe 69 of piston rod 67 inside, enters into the large chamber S2 of first order cylinder, then by the oil duct of C1 mouth by middle cylinder barrel 63 inside, enters into second stage cylinder loculus S4.Oil return route is as follows: the fluid in the S3 of Gang great chamber, the second stage enters into central cores tube chamber S0 from the second core pipe 610 of piston rod inner, then by the second balance cock 613 of opening (pressure oil that the control oil opened of the second balance cock 613 is entered by C mouth provides), flow out from B mouth.If now middle cylinder barrel 63 is in the state of stretching out, because the large chamber S2 of first order cylinder is communicated with Gang great chamber, second stage S4, therefore the large chamber S2 of first order cylinder is also filled with high pressure, middle cylinder barrel 63 also has the trend of retraction, but in telescopic hydraulic system, need the switching in extension and contraction control valve control presssure oil direction, now A mouth is ended by outside extension and contraction control valve, and namely A mouth oil return is obstructed, and therefore, cylinder barrel 63 cannot be retracted.
Oil-feed simplifies route: C → S2 → C1 → S4
Oil return simplifies route: S3 → S0 → B
When in the middle of needs, cylinder barrel 63 is retracted, pressure oil enters from C mouth, by the 3rd core pipe 69 of piston rod 67 inside, enters into the large chamber S2 of first order cylinder.Oil return route is as follows: the fluid in the large chamber S1 of first order cylinder is by the first core pipe 68 of piston rod 67 inside, then by the first balance cock 612 of opening (pressure oil that the control oil opened of the first balance cock 612 is entered by C mouth provides), flow out from A mouth.If now final stage cylinder barrel 61 is in the state of stretching out, because the large chamber S2 of first order cylinder is communicated with Gang great chamber, second stage S4, therefore second stage Gang great chamber S4 is also filled with high pressure, final stage cylinder barrel 61 also has the trend of retraction, but in telescopic hydraulic system, need the switching in extension and contraction control valve control presssure oil direction, now B mouth is ended by outside extension and contraction control valve, and namely B mouth oil return is obstructed, and therefore final stage cylinder barrel 61 cannot be retracted.
Oil-feed simplifies route: C → S2
Oil return simplifies route: S1 → A
Known by above-mentioned analysis, the present invention can control stretching out and retract action of secondary telescopic hydraulic cylinder respectively, and not by order restriction, has complete independence.
Technique scheme, optimize layout, multi-stage oil cylinder 6 is arranged in a joint arm 1 and two to save arm 2, three and save between arm 3, effectively reduce steel rope repeatedly around the cumulative load after pulley, and then reduce the weight of oil cylinder and arm, realize the light-weight design of single oil cylinder arm, improve the lifting performance of car load.
See Fig. 7, the embodiment of the present invention two provides a kind of telescopic boom, and it comprises six joint telescopic booms, and multi-stage oil cylinder 6 is located between one, two, three joint arms 3, and four joint arms 4 to six save arm realizes saving with three arm 3 synchronization telescope by wire rope pulley group drive mechanism.
It should be noted that, in above-described embodiment one and embodiment two, two-level oil cylinder can be located between the adjacent arm joint of any three joint, between such as two, three, four joint arms, four, five, between six joint arms.The flexible of other arms joint realizes by wire rope pulley group or chain pulley group drive mechanism.
The 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 with multistage independent telescope oil cylinder, it is characterized in that, comprise multi-stage telescopic arms and multi-stage oil cylinder (6), described multi-stage oil cylinder (6) stretches for driving at least two joint telescopic booms of described multi-stage telescopic arms, wherein, the cylinder barrel energy independent telescopes at different levels of described multi-stage oil cylinder (6).
2. telescopic arm structure according to claim 1, is characterized in that, described multi-stage oil cylinder (6) comprises piston rod assembly, middle cylinder cartridge module and final stage cylinder barrel (61); Described piston rod assembly is slidably installed in described middle cylinder cartridge module, and described middle cylinder cartridge module is slidably installed in described final stage cylinder barrel (61); The separate work of large chamber oil circuit of described middle cylinder cartridge module and described final stage cylinder barrel (61), the separate work of loculus oil circuit of described middle cylinder cartridge module and described final stage cylinder barrel (61).
3. telescopic arm structure according to claim 2, it is characterized in that, described piston rod assembly comprises piston rod (67) and is arranged on the first stage piston (66) of described piston rod (67) one end, and described first stage piston (66) is slidably installed on the inwall of described middle cylinder cartridge module.
4. telescopic arm structure according to claim 3, is characterized in that, described middle cylinder cartridge module comprises middle cylinder barrel (63) and is arranged on the intermediate piston (64) of described middle cylinder barrel (63) end; Described intermediate piston (64) is slidably installed on the inwall of described final stage cylinder barrel (61).
5. telescopic arm structure according to claim 4, is characterized in that, the piston rod head (611) of described piston rod (67) is provided with the first oil circuit, the second oil circuit and the 3rd oil circuit; Described first oil circuit is communicated with the large chamber of described middle cylinder cartridge module; Described second oil circuit is communicated with the large chamber of described final stage cylinder barrel (61);
Described 3rd oil circuit is communicated with the loculus of described middle cylinder cartridge module with described final stage cylinder barrel (61);
Described telescopic arm structure also comprises control cock group, and described control cock group is connected with described first oil circuit, the second oil circuit and the 3rd oil circuit, for controlling the independent telescope of the cylinder barrels at different levels of described multi-stage oil cylinder (6).
6. telescopic arm structure according to claim 5, is characterized in that, described control cock group comprises the first balance cock (612) and the second balance cock (613); Described first balance cock (612) is located on described first oil circuit, and described second balance cock (613) is located on described second oil circuit; Described 3rd oil circuit is communicated with the control end of described first balance cock (612) with described second balance cock (613).
7. telescopic arm structure according to claim 5, it is characterized in that, also comprise the first core pipe (68), one end of described first core pipe (68) is communicated with the large chamber of described middle cylinder cartridge module by the through hole on described first stage piston (66), and the other end of described first core pipe (68) is communicated with described first oil circuit.
8. telescopic arm structure according to claim 5, it is characterized in that, also comprise the second core pipe (610), one end of described second core pipe (610) is communicated with by the large chamber of the through hole on described intermediate piston (64) with described final stage oil cylinder, and the other end of described second core pipe (610) is communicated with described second oil circuit.
9. telescopic arm structure according to claim 5, it is characterized in that, also comprise the 3rd core pipe (69), one end of described 3rd core pipe (69) is all communicated with the loculus of described middle cylinder cartridge module with described final stage cylinder barrel (61), and the other end of described 3rd core pipe (69) is communicated with described 3rd oil circuit.
10. a hoisting crane, is characterized in that, comprises the arbitrary described telescopic arm structure of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511029459.5A CN105384091A (en) | 2015-12-31 | 2015-12-31 | Telescopic boom structure with a multilevel independent telescopic cylinder and crane |
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| CN201511029459.5A CN105384091A (en) | 2015-12-31 | 2015-12-31 | Telescopic boom structure with a multilevel independent telescopic cylinder and crane |
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| CN201511029459.5A Pending CN105384091A (en) | 2015-12-31 | 2015-12-31 | Telescopic boom structure with a multilevel independent telescopic cylinder and crane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107044285A (en) * | 2017-01-09 | 2017-08-15 | 中国铁建重工集团有限公司 | A kind of flexible slew gear and horizontal jet |
| CN110790155A (en) * | 2019-11-29 | 2020-02-14 | 三一汽车起重机械有限公司 | Bolt type crane arm and crane |
| CN114950812A (en) * | 2022-06-24 | 2022-08-30 | 上海外高桥造船有限公司 | Telescopic equipment for ship spraying |
| CN117605733A (en) * | 2024-01-22 | 2024-02-27 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107044285A (en) * | 2017-01-09 | 2017-08-15 | 中国铁建重工集团有限公司 | A kind of flexible slew gear and horizontal jet |
| CN110790155A (en) * | 2019-11-29 | 2020-02-14 | 三一汽车起重机械有限公司 | Bolt type crane arm and crane |
| CN110790155B (en) * | 2019-11-29 | 2021-03-23 | 三一汽车起重机械有限公司 | Bolt type crane arm and crane |
| CN114950812A (en) * | 2022-06-24 | 2022-08-30 | 上海外高桥造船有限公司 | Telescopic equipment for ship spraying |
| CN117605733A (en) * | 2024-01-22 | 2024-02-27 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
| CN117605733B (en) * | 2024-01-22 | 2024-03-19 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
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Application publication date: 20160309 |