CN202284125U - Bolt type telescopic boom and telescopic boom crane - Google Patents

Bolt type telescopic boom and telescopic boom crane Download PDF

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Publication number
CN202284125U
CN202284125U CN 201120348928 CN201120348928U CN202284125U CN 202284125 U CN202284125 U CN 202284125U CN 201120348928 CN201120348928 CN 201120348928 CN 201120348928 U CN201120348928 U CN 201120348928U CN 202284125 U CN202284125 U CN 202284125U
Authority
CN
China
Prior art keywords
cylinder
telescopic
pin
oil cylinder
arm
Prior art date
Application number
CN 201120348928
Other languages
Chinese (zh)
Inventor
任利有
彭睿
李建
Original Assignee
三一汽车起重机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN 201110137362 priority Critical patent/CN102229413A/en
Priority to CN201110137362.1 priority
Application filed by 三一汽车起重机械有限公司 filed Critical 三一汽车起重机械有限公司
Priority to CN 201120348928 priority patent/CN202284125U/en
Application granted granted Critical
Publication of CN202284125U publication Critical patent/CN202284125U/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/708Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Abstract

The utility model discloses a bolt type telescopic boom and a telescopic boom crane. The bolt type telescopic boom comprises a base boom and at least one telescopic boom sleeved in the base boom, a telescopic oil cylinder is arranged in an inner cavity of the telescopic boom, the movable end of the telescopic oil cylinder can be selectively locked with any section of the telescopic booms through cylinder pins, and the cylinder pins are symmetrically arranged on two opposite side faces of the cylinder end of the telescopic oil cylinder and can slide in the same direction along the side faces of the telescopic oil cylinder through sliding devices. The brand new bolt type telescopic boom provided by the technical scheme can simplify a cylinder end structure of the telescopic oil cylinder, thereby being capable of simplifying processing technology.

Description

A kind of bolt-type telescopic arm and telescopic arm crane
Technical field
The utility model relates generally to technical field of engineering machinery, is meant a kind of bolt-type telescopic arm especially and comprises the telescopic arm crane of said bolt-type telescopic arm.
Background technology
Along with the fast development of China's economic construction, the camp site increases for the increasing demand of hoister in large tonnage; Maximization is the important design goal of various hoisting cranes.For telescopic arm crane, the performance of its telescopic boom is most important, directly affects hoisting crane single-piece lifting performance.
Existing telescopic boom adopts one-level or secondary telescopic oil cylinder to add the rope drainage technique mostly, and indivedual hoister in large tonnage adopt three grades of telescopic oil cylinders to add the rope drainage technique.The multi-stage expansion oil cylinder makes that the changes of section that respectively saves telescopic boom is bigger; Also increased simultaneously the weight of crane arm; Not only limit the joint number (generally being no more than five joints) of telescopic boom, and reduced operating efficiency, and then significantly reduced the lifting performance of telescopic arm crane.
Occurred a kind of single-cylinder bolt type telescopic boom in recent years, this telescopic boom has only a telescopic oil cylinder, and the both sides of this telescopic oil cylinder are provided with two cylinder pins, the center shaft coplane of the center shaft of these two cylinder pins and said telescopic oil cylinder accordingly; Said telescopic oil cylinder can selectively lock or discharge the relative position of itself and arbitrary joint telescopic boom through above-mentioned cylinder pin.In addition; Be equipped with the arm pin between each adjacent telescopic boom and between the basic arm arm of crane pivot joint (directly with) and the first segment telescopic boom, between the adjacent telescopic boom and the relative position between basic arm and the first segment telescopic boom can selectively lock or discharge through this arm pin.
Said telescopic oil cylinder can at first lock with the minor details telescopic boom, simultaneously minor details telescopic boom and joint telescopic boom second from the bottom is discharged, and this moment, said telescopic oil cylinder can be taken the minor details telescopic boom out of; The minor details telescopic boom locks itself and joint telescopic boom second from the bottom after arriving the desired location again; Regain said telescopic oil cylinder and with itself and the second joint telescopic boom locking; Then with joint telescopic boom second from the bottom and joint telescopic boom third from the bottom release; Said telescopic oil cylinder just can save telescopic boom with second and take out of this moment, and the rest may be inferred just can make and respectively save telescopic boom and stretch out successively.
Above-mentioned single-cylinder bolt type telescopic boom adopts latch to replace steel rope pulling crane arm; Broken through the restriction of telescopic boom joint number in the existing rubber tyre gantry crane design; Thereby increased the lifting altitude and the lifting weight of hoisting crane, so significantly improved hoisting crane the complete machine performance, strengthened the competitiveness of product in market.Therefore above-mentioned single-cylinder bolt type telescopic boom will be the inexorable trend of hoisting crane production development.
Yet there are shortcomings such as cylinder head complex structure, cylinder head processed complex in bolt-type telescopic arm of the prior art.
The utility model content
The utility model proposes a kind of bolt-type telescopic arm and telescopic arm crane, and a kind of brand new bolt-type telescopic arm is provided, and can simplify the cylinder head structure of telescopic oil cylinder, thereby can simplified processing process.
The technical scheme of the utility model is achieved in that
A kind of bolt-type telescopic arm comprises basic arm and is set at least one joint telescopic boom in the said basic arm, is provided with telescopic oil cylinder in the inner chamber of said telescopic boom, and the movable end of said telescopic oil cylinder selectively locks with any joint telescopic boom through the cylinder pin;
Said cylinder pin is symmetricly set in two relative sides of said telescopic oil cylinder cylinder head and can slides in the same way along the side of said telescopic oil cylinder through carriage.
Preferably, said carriage is guide groove or guide rail.
Preferably, said cylinder pin is arranged at the upper side and the downside of said telescopic oil cylinder cylinder head, and can be along the upper side and the downside horizontal slip in the same way of said telescopic oil cylinder.
Preferably, said cylinder pin is arranged at the left surface and the right flank of said telescopic oil cylinder cylinder head, and can be along the left surface and the vertical in the same way slip of right flank of said telescopic oil cylinder.
Preferably, said cylinder pin is connected with the cylinder barrel of cylinder pin oil cylinder, and the lever construction of said cylinder pin oil cylinder is fixed on the cylinder head of said telescopic oil cylinder through fixed support.
Preferably, also be provided with the retracing spring that is set on the said cylinder barrel between said cylinder pin and the said fixed support.
Preferably; The top of said telescopic oil cylinder cylinder head also is provided with the chute of inverted T-shape; Cooperate in the said chute interlocking slide block that can horizontally slip is installed; Said interlocking slide block is connected with said cylinder pin through the interlocking connecting rod, and said interlocking connecting rod drives said interlocking slide block and in said chute, horizontally slips when said cylinder pin slides up and down;
Also be provided with arm pin oil cylinder on the cylinder head of said telescopic oil cylinder, said arm pin oil cylinder connection one is arranged at the draw-in groove of pulling pin of said chute top, and the draw-in groove of pulling pin that is arranged at said chute top plugs said arm pin under the effect of said arm pin oil cylinder.
Preferably; The bottom of said interlocking slide block is arranged in use in the T font bottom of sliding in the said chute; Said interlocking slide block is provided with non-level groove near a side of said cylinder pin oil cylinder, is arranged in the said groove to be connected with said interlocking connecting rod along the column structure that said groove slides.
A kind of telescopic arm crane, said telescopic arm crane comprises foregoing bolt-type telescopic arm.
The utility model technical scheme provides a kind of brand new bolt-type telescopic arm, can simplify the cylinder head structure of telescopic oil cylinder, thereby can simplified processing process; Further, the utility model adopts down inserting type cylinder pin to replace the cylinder pin that is arranged on telescopic oil cylinder cylinder head both sides in the prior art, makes the cylinder diameter of telescopic oil cylinder that bigger growth space arranged; In addition, through the setting of the utility model cylinder pin, arm pin and interlocking slide block, withdrawal when having avoided cylinder pin and arm pin, thus can be good at realizing mechanical interlocked.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of bolt-type telescopic arm of the utility model (when the cylinder pin stretches out);
Fig. 2 is the structural representation of a kind of bolt-type telescopic arm of the utility model (during the withdrawal of cylinder pin);
Fig. 3 be telescopic oil cylinder in the installation site of principal arm scheme drawing.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
With reference to Fig. 1, Fig. 2 and Fig. 3; In first embodiment of a kind of bolt-type telescopic arm of the utility model; Said bolt-type telescopic arm comprises basic arm and is set at least one joint telescopic boom in the said basic arm, said respectively save between the telescopic boom and said basic arm and first segment telescopic boom between can be through 12 lockings of arm pin; Be provided with telescopic oil cylinder 3 in the inner chamber of said telescopic boom, the fixed end of said telescopic oil cylinder 3 is fixed on the said basic arm, and the movable end of said telescopic oil cylinder 3 selectively locks with any joint telescopic boom through cylinder pin 6; Said cylinder pin 6 is symmetricly set in 10 two relative sides of said telescopic oil cylinder 3 cylinder heads and can slides in the same way along the side of said telescopic oil cylinder 3 through carriage.
The utility model technical scheme provides a kind of brand new bolt-type telescopic arm, during said bolt-type is flexible the cylinder pin sense of motion different with the sense of motion of cylinder pin in the prior art, in the prior art; Two cylinder pins are slide relative; I.e. two cylinder pin inwardly motions or outwards motion simultaneously simultaneously, and in the utility model, two cylinder pins are to slide in the same way; Promptly the sense of motion of two cylinder pins is identical; Through such design, can simplify the cylinder head structure of telescopic oil cylinder, thus can simplified processing process.
Wherein, said carriage is preferably guide groove 11 or guide rail, and certainly, said carriage can also be selected other structure, and the utility model does not carry out any qualification to this.In a preferred embodiment of the utility model, the side of said telescopic oil cylinder 3 cylinder heads 10 is provided with the guide groove 11 that supplies said cylinder pin 6 to slide, and said cylinder pin 6 is arranged in the said guide groove 11.In a preferred embodiment of the utility model, said cylinder pin 6 is arranged at the upper side and the downside of said telescopic oil cylinder 3 cylinder heads 10, and can be along the upper side and the downside horizontal slip in the same way of said telescopic oil cylinder 3.
In another preferred embodiment of the utility model, said cylinder pin 6 is arranged at the left surface and the right flank of said telescopic oil cylinder 3 cylinder heads 10, and can be along the left surface and the vertical in the same way slip of right flank of said telescopic oil cylinder 3.In this practical example, said bolt-type telescopic arm adopts two down inserting type cylinder pins, thereby makes the cylinder diameter of telescopic oil cylinder that bigger growth space arranged.
In another preferred embodiment of the utility model, the said cylinder pin 6 that is arranged in the said guide groove 11 is connected with the cylinder barrel of cylinder pin oil cylinder 5, and the lever construction of said cylinder pin oil cylinder 5 is fixed on the cylinder head 10 of said telescopic oil cylinder 3 through fixed support 4.
Said basic arm is meant and the non-telescoping jib of hoisting crane body bonded assembly that for the number of telescopic boom, the utility model does not limit this, can be according to the actual requirements and the actual conditions setting.The shape of said basic arm and Ge Jie telescopic boom should be consistent, can certainly be inconsistent, and be rectangle like basic arm; Telescopic boom is circular or other shape, and the utility model preferably basic arm is consistent with the shape of Ge Jie telescopic boom, wherein respectively saves the not of uniform size of telescopic boom and causes; The diameter of basic arm is maximum; The maximum telescopic boom of diameter is the first segment telescopic boom, and the like, the minimum telescopic boom of diameter is the minor details telescopic boom.
Be equipped with arm pin 12 between each adjacent telescopic boom and between basic arm and the first segment telescopic boom; Between the adjacent telescopic boom and the relative position between basic arm and the first segment telescopic boom can through this arm pin 12 selectively lock or release; Said telescopic oil cylinder 3 can at first lock with the minor details telescopic boom; Simultaneously minor details telescopic boom and joint telescopic boom second from the bottom are discharged, this moment, said telescopic oil cylinder 3 can be taken the minor details telescopic boom out of; The minor details telescopic boom locks itself and joint telescopic boom second from the bottom after arriving the desired location again; Regain said telescopic oil cylinder 3 and with itself and the second joint telescopic boom locking; Then with joint telescopic boom second from the bottom and joint telescopic boom third from the bottom release; Said telescopic oil cylinder 3 just can save telescopic boom with second and take out of this moment, and the rest may be inferred just can make and respectively save telescopic boom and stretch out successively.
Further, also be provided with the retracing spring 7 that is set on the said cylinder barrel between said cylinder pin 6 and the said fixed support 4.
When receiving cylinder pin 6, cylinder pin oil cylinder 5 is withdrawn under the oil pressure effect, and the cylinder pin 6 that pulling is attached thereto is accomplished and received 6 actions of cylinder pin along said guide groove 11 upward movements, and said retracing spring 7 is compressed.
When stretching cylinder pin 6, behind cylinder pin oil cylinder 5 emptyings, the elongation that resets of compressed said retracing spring 7 promotes cylinder pin 6 and moves downward along said guide groove 11, accomplishes and stretches 6 actions of cylinder pin.
In another embodiment of the utility model; The top of said telescopic oil cylinder 3 cylinder heads 10 also is provided with the chute of inverted T-shape; Cooperate in the said chute interlocking slide block 9 that can horizontally slip is installed; Said interlocking slide block 9 is connected with said cylinder pin 6 through interlocking connecting rod 8, and said interlocking connecting rod 8 drives said interlocking slide block 9 and in said chute, horizontally slips when said cylinder pin 6 slides up and down; Also be provided with arm pin oil cylinder 1 on the cylinder head 10 of said telescopic oil cylinder 3, said arm pin oil cylinder 1 connection one is arranged at the draw-in groove 2 of pulling pin of said chute top, and the draw-in groove 2 of pulling pin that is arranged at said chute top plugs said arm pin 12 under the effect of said arm pin oil cylinder 1.
Wherein, The bottom of said interlocking slide block 9 is arranged in use in the T font bottom of sliding in the said chute; Said interlocking slide block 9 is provided with non-level groove near a side of said cylinder pin oil cylinder 5, is arranged in the said groove to be connected with said interlocking connecting rod 8 along the column structure that said groove slides.
In an embodiment of the utility model, said non-level groove is that the outside is low, inboard high groove (like Fig. 1, shown in Figure 2); Certainly; Said non-level groove also can be high for the outside, inboard low groove, and the direction of slip of interlocking slide block 9 is opposite when just being provided with like this.
Need to prove; Two cylinder pins 6 are arranged at respectively in two guide grooves 11 of two sides of said telescopic oil cylinder 3 cylinder heads 10; In Fig. 1, the said figure of Fig. 2; All only show structure towards side, in fact telescopic oil cylinder 3 cylinder heads 10 also be provided with on the side of side dorsad with towards the identical structure of side, also be that two sides of said telescopic oil cylinder 3 cylinder heads 10 are provided with the guide groove 11 that supplies said cylinder pin 6 to slide up and down; Two cylinder pins 6 that are arranged in two guide grooves 11 are connected with the cylinder barrel of cylinder pin oil cylinder 5, and the lever construction of two cylinder pin oil cylinders 5 all is fixed on the cylinder head 10 of said telescopic oil cylinder 3 through fixed support 4.
Through the setting of cylinder pin, arm pin and interlocking slide block among the utility model embodiment, withdrawal when having avoided cylinder pin and arm pin, thus can be good at realizing mechanical interlocked.
Describe in the face of the working process and the principle of work of the bolt-type telescopic arm in preferred embodiment of the utility model down:
1, pull out the action of arm pin:
The draw-in groove 2 of pulling pin moves downward under the effect of arm pin oil cylinder 1, contacts with arm pin 12 afterbodys that are installed in principal arm (basic arm or telescopic boom) arm tail, moves downward thereby drive arm pin 12, realizes pulling out 12 for the actions of arm pin.
2, receive the action of cylinder pin
Cylinder pin oil cylinder 5 is withdrawn under the oil pressure effect, and the cylinder pin 6 that pulling is attached thereto is accomplished and received 6 actions of cylinder pin along guide groove 11 upward movements, and retracing spring 7 is compressed simultaneously.
3, stretch the action of cylinder pin
Behind cylinder pin oil cylinder 5 emptyings, the elongation that resets of compressed retracing spring 7 promotes cylinder pin 6 (6) and moves downward along guide groove 11, accomplishes and stretches 6 actions of cylinder pin.
4, interlock process
When cylinder pin 6 is upwards withdrawn; Connected interlocking connecting rod 8 upward movements; Promote interlocking slide block 9 and inwardly move to the below of the draw-in groove 2 of pulling pin, thereby stop the draw-in groove 2 of pulling pin to move downward, pull out 12 for the actions of arm pin thereby can not carry out along its chute; Withdrawal when having avoided cylinder pin 6 and arm pin 12, thus realize mechanical interlocked; After 12 actions of arm pin are pulled out in draw-in groove 2 execution of pulling pin; The draw-in groove 2 of pulling pin moves downward to interlocking slide block 9 inwardly on the paths of motion, stops inwardly motion of interlocking slide block 9, thereby makes the interlocking connecting rod 8 can't upward movement; With interlocking connecting rod 8 bonded assembly cylinder pins 6 also can't upward movement; Receive 6 actions of cylinder pin thereby can not carry out, withdrawal when having avoided cylinder pin 6 and arm pin 12, thus realize mechanical interlocked.
The utility model technical scheme provides a kind of brand new bolt-type telescopic arm, can simplify the cylinder head structure of telescopic oil cylinder, thereby can simplified processing process; Further, the utility model adopts down inserting type cylinder pin to replace the cylinder pin that is arranged on telescopic oil cylinder cylinder head both sides in the prior art, makes the cylinder diameter of telescopic oil cylinder that bigger growth space arranged; In addition, through the setting of the utility model cylinder pin, arm pin and interlocking slide block, withdrawal when having avoided cylinder pin and arm pin, thus can be good at realizing mechanical interlocked.
In addition; The invention also discloses a kind of telescopic arm crane, said telescopic arm crane can comprise the described bolt-type telescopic arm like preceding each embodiment, for length is considered; No longer bolt-type telescopic arm is given unnecessary details at this, got final product with reference to the description of front relevant portion.

Claims (9)

1. a bolt-type telescopic arm comprises basic arm and is set at least one joint telescopic boom in the said basic arm, is provided with telescopic oil cylinder in the inner chamber of said telescopic boom, and the movable end of said telescopic oil cylinder selectively locks with any joint telescopic boom through the cylinder pin;
It is characterized in that said cylinder pin is symmetricly set in two relative sides of said telescopic oil cylinder cylinder head and can slides in the same way along the side of said telescopic oil cylinder through carriage.
2. bolt-type telescopic arm according to claim 1 is characterized in that, said carriage is guide groove or guide rail.
3. bolt-type telescopic arm according to claim 2 is characterized in that, said cylinder pin is arranged at the upper side and the downside of said telescopic oil cylinder cylinder head, and can be along the upper side and the downside horizontal slip in the same way of said telescopic oil cylinder.
4. bolt-type telescopic arm according to claim 2 is characterized in that, said cylinder pin is arranged at the left surface and the right flank of said telescopic oil cylinder cylinder head, and can be along the left surface and the vertical in the same way slip of right flank of said telescopic oil cylinder.
5. bolt-type telescopic arm according to claim 4 is characterized in that, said cylinder pin is connected with the cylinder barrel of cylinder pin oil cylinder, and the lever construction of said cylinder pin oil cylinder is fixed on the cylinder head of said telescopic oil cylinder through fixed support.
6. bolt-type telescopic arm according to claim 5 is characterized in that, also is provided with the retracing spring that is set on the said cylinder barrel between said cylinder pin and the said fixed support.
7. according to claim 5 or 6 described bolt-type telescopic arms; It is characterized in that; The top of said telescopic oil cylinder cylinder head also is provided with the chute of inverted T-shape; Cooperate in the said chute interlocking slide block that can horizontally slip is installed, said interlocking slide block is connected with said cylinder pin through the interlocking connecting rod, and said interlocking connecting rod drives said interlocking slide block and in said chute, horizontally slips when said cylinder pin slides up and down;
Also be provided with arm pin oil cylinder on the cylinder head of said telescopic oil cylinder, said arm pin oil cylinder connection one is arranged at the draw-in groove of pulling pin of said chute top, and the draw-in groove of pulling pin that is arranged at said chute top plugs said arm pin under the effect of said arm pin oil cylinder.
8. bolt-type telescopic arm according to claim 7; It is characterized in that; The bottom of said interlocking slide block is arranged in use in the T font bottom of sliding in the said chute; Said interlocking slide block is provided with non-level groove near a side of said cylinder pin oil cylinder, is arranged in the said groove to be connected with said interlocking connecting rod along the column structure that said groove slides.
9. a telescopic arm crane is characterized in that, said telescopic arm crane comprises like each described bolt-type telescopic arm of claim 1 to 8.
CN 201120348928 2011-05-25 2011-09-16 Bolt type telescopic boom and telescopic boom crane CN202284125U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN 201110137362 CN102229413A (en) 2011-05-25 2011-05-25 Latch-type telescopic boom and crane with telescopic boom
CN201110137362.1 2011-05-25
CN 201120348928 CN202284125U (en) 2011-05-25 2011-09-16 Bolt type telescopic boom and telescopic boom crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120348928 CN202284125U (en) 2011-05-25 2011-09-16 Bolt type telescopic boom and telescopic boom crane

Publications (1)

Publication Number Publication Date
CN202284125U true CN202284125U (en) 2012-06-27

Family

ID=44842036

Family Applications (3)

Application Number Title Priority Date Filing Date
CN 201110137362 CN102229413A (en) 2011-05-25 2011-05-25 Latch-type telescopic boom and crane with telescopic boom
CN 201120348928 CN202284125U (en) 2011-05-25 2011-09-16 Bolt type telescopic boom and telescopic boom crane
CN 201110276033 CN102358582B (en) 2011-05-25 2011-09-16 Pin-type telescopic arm and telescopic crane

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN 201110137362 CN102229413A (en) 2011-05-25 2011-05-25 Latch-type telescopic boom and crane with telescopic boom

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN 201110276033 CN102358582B (en) 2011-05-25 2011-09-16 Pin-type telescopic arm and telescopic crane

Country Status (2)

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CN (3) CN102229413A (en)
WO (1) WO2012159512A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358582A (en) * 2011-05-25 2012-02-22 三一汽车起重机械有限公司 Pin-type telescopic arm and telescopic crane

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102556859B (en) * 2012-01-04 2014-12-10 三一汽车起重机械有限公司 Plug-pull-pin mechanism, plug pin telescopic boom and crane
CN102530723B (en) * 2012-02-13 2014-04-30 中联重科股份有限公司 Engineering machine and pin inserting and pulling device thereof
CN102730578B (en) * 2012-06-27 2014-06-18 三一汽车起重机械有限公司 Plug-unplug pin mechanism and cylinder head thereof, plug pin type telescopic arm and crane
US10077173B2 (en) 2013-08-27 2018-09-18 Xuzhou Heavy Machinery Co., Ltd. Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm
CN103527557B (en) * 2013-09-29 2016-02-24 徐州重型机械有限公司 Single-cylinder bolt mechanism and there is oil cylinder and the hoist of this mechanism
CN103693566B (en) * 2013-12-18 2015-11-25 徐州重型机械有限公司 The cylinder head that a kind of single hydraulic oil cylinder driving cylinder arm pin is flexible
CN104085802B (en) * 2014-06-30 2016-02-03 中联重科股份有限公司 Cylinder key seat, telescoping boom and construction machinery and equipment
CN104310246B (en) * 2014-08-27 2016-03-16 湖南飞涛专用汽车制造有限公司 A kind of adjustable telescopic cylinder head guiding roller device
CN105221521B (en) * 2014-10-16 2017-05-24 徐州重型机械有限公司 Combination assembly type telescopic cylinder head body and telescopic cylinder
CN110862026A (en) * 2019-11-07 2020-03-06 太原重工股份有限公司 Telescopic boom and crane comprising same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH076191B2 (en) * 1992-02-13 1995-01-30 三和ブレーカー株式会社 Pile driver
JP4076191B2 (en) * 1998-04-27 2008-04-16 株式会社タダノ Mobile crane boom telescopic mechanism
CN1418805A (en) * 2002-11-13 2003-05-21 徐州重型机械厂 Multiple arms telescopic device automatically controlled by single telescopic cylinder
JP4576279B2 (en) * 2005-04-06 2010-11-04 株式会社加藤製作所 Mobile crane
CN100503416C (en) * 2006-12-28 2009-06-24 长沙中联重工科技发展股份有限公司 Vertical type pin mechanism of crane
JP5024821B2 (en) * 2007-04-27 2012-09-12 株式会社加藤製作所 Crane boom telescopic device
CN101618839B (en) * 2008-06-30 2011-01-12 徐州重型机械有限公司 Telescopic crane and single cylinder bolt type telescopic arm
CN201272662Y (en) * 2008-06-30 2009-07-15 徐州重型机械有限公司 Telescopic arm crane and its single-cylinder bolt type telescopic arm
CN201580920U (en) * 2009-12-31 2010-09-15 三一汽车制造有限公司 Crane and single-cylinder pin-type telescopic arm and pin self-locking device thereof
CN102050393B (en) * 2010-12-22 2012-10-03 三一汽车起重机械有限公司 Telescopic crane and single-cylinder plug pin mechanism
CN102229413A (en) * 2011-05-25 2011-11-02 三一汽车起重机械有限公司 Latch-type telescopic boom and crane with telescopic boom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358582A (en) * 2011-05-25 2012-02-22 三一汽车起重机械有限公司 Pin-type telescopic arm and telescopic crane
CN102358582B (en) * 2011-05-25 2013-10-23 三一汽车起重机械有限公司 Pin-type telescopic arm and telescopic crane

Also Published As

Publication number Publication date
WO2012159512A1 (en) 2012-11-29
CN102229413A (en) 2011-11-02
CN102358582B (en) 2013-10-23
CN102358582A (en) 2012-02-22

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