CN102153023B - Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane - Google Patents

Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane Download PDF

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Publication number
CN102153023B
CN102153023B CN201110085944XA CN201110085944A CN102153023B CN 102153023 B CN102153023 B CN 102153023B CN 201110085944X A CN201110085944X A CN 201110085944XA CN 201110085944 A CN201110085944 A CN 201110085944A CN 102153023 B CN102153023 B CN 102153023B
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CN
China
Prior art keywords
cylinder
pin
dovetail furrow
arm
telescopic boom
Prior art date
Application number
CN201110085944XA
Other languages
Chinese (zh)
Other versions
CN102153023A (en
Inventor
薛金星
滕儒民
刘宝隆
许平
郝明金
Original Assignee
大连理工大学
大连益利亚工程机械有限公司
徐州益利亚工程机械有限公司
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Application filed by 大连理工大学, 大连益利亚工程机械有限公司, 徐州益利亚工程机械有限公司 filed Critical 大连理工大学
Priority to CN201110085944XA priority Critical patent/CN102153023B/en
Publication of CN102153023A publication Critical patent/CN102153023A/en
Application granted granted Critical
Publication of CN102153023B publication Critical patent/CN102153023B/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 invention discloses a safety pin interlocking device for a crane, a single cylinder safety pin type telescopic arm and a crane. The safety pin interlocking device for the crane comprises a pin pull device dovetail groove and a mechanical lock which is fixedly connected with the dovetail groove; the motion path of the dovetail groove is perpendicular to an axis of a cylinder pin; meanwhile, the motion path of an upper cylinder pin is intersected with the motion path of the dovetail groove, and the motion path of a lower cylinder pin is intersected with the motion path of the mechanical lock; when the arm pin moves to the unlocking position, an arm pin pulling oil cylinder drives the dovetail groove to lock the upper cylinder pin, and meanwhile, the dovetail groove drives the mechanicallock to lock the lower cylinder pin; and when the cylinder pin moves to the unlocking position, the upper cylinder pin locks the dovetail groove by a cylinder pin body, and meanwhile, the lower cylinder pin locks the mechanical lock by the cylinder pin body, thereby the arm pin is directly and indirectly locked. The single cylinder safety pin type telescopic arm and telescopic arm type crane provided by the invention comprise the safety pin interlocking device.

Description

Hoisting crane latch interlock, single-cylinder bolt type telescopic boom and hoisting crane
Technical field
The present invention relates to the hoisting crane field, particularly relate to a kind of latch interlock for single-cylinder plug type telescopic jib crane.In addition, the invention still further relates to a kind of single-cylinder bolt type telescopic boom and a kind of hoisting crane that comprises above-mentioned single-cylinder bolt type telescopic boom that comprises above-mentioned latch interlock.
Background technology
Present large-tonnage both domestic and external and super-tonnage car hosit extensively adopt the single cylinder bolt-type telescoping mechanism, the characteristics of this telescoping mechanism are to have only a telescopic oil cylinder, its core apparatus is the bolt mechanism that is installed on telescopic oil cylinder cylinder head position, and the latch interlock then is the critical component that guarantees the bolt mechanism safe and reliable operation.
The latch interlock comprises mechanical lock, pin pulling out device and is arranged at the cylinder pin of telescopic oil cylinder both sides respectively, optionally discharges and locks relative position between telescopic oil cylinder and the Ge Jie telescopic boom by the cylinder pin, thereby realize stretching out and withdrawing of every joint telescopic boom.
Telescopic arm crane is in passing through the actual job process of telescopic boom, the N joint telescopic boom that at first utilizes the cylinder pin on the interlock and will stretch locks, the arm pin that should save telescopic boom is removed the locking that saves telescopic boom with N-1 simultaneously, N joint and above telescopic boom thereof are under the effect of telescopic oil cylinder, move to assigned address by the cylinder pin on the latch interlock, after treating that the arm pin relocks N joint telescopic boom and N-1 joint telescopic boom again, remove the cylinder pin with the locking of N joint telescopic boom, telescopic oil cylinder is withdrawn and is locked with N-1 joint telescopic boom, after treating that arm pin on the N-1 joint telescopic boom unlocks with N-2 joint telescopic boom, telescopic oil cylinder is taken N-1 joint telescopic boom out of.According to the method described above, telescopic oil cylinder locks between selection and the different telescopic boom successively, thereby has realized respectively saving stretching out successively of telescopic boom by the interlock on the bolt mechanism, locking order during withdrawal between telescopic oil cylinder and the Ge Jie telescopic boom repeats no more in contrast here.
But, hoisting crane is in practical work process, owing to the unloading suddenly of the fatigue fracture of artificial misoperation, arm pin spring, weight causes reasons such as the impulsive force of arm pin is excessive, may cause arm pin and cylinder pin to be in the state of release simultaneously, telescopic boom is because the effect of gravity can cause telescopic boom to drop and telescopic oil cylinder damage or even more serious Peril Incident.In order to prevent the generation of above-mentioned situation, interlock when requiring telescoping mechanism must accomplish latch in the course of the work, just when cylinder pin telescopic oil cylinder promotes the motion of cylinder pin, the cylinder shank is movement therewith also, when the cylinder pin is in the unlocked position, the cylinder shank blocks the pin pulling out device dovetail furrow of arm pin and the moving line of the mechanical lock of captiveing joint with dovetail furrow, makes the not flexible of telescopic oil cylinder of arm pin, thereby has realized the locking to the arm pin; In like manner, when the arm pin was in released state, arm pin and mechanical lock will form locking to the cylinder pin, prevent cylinder pin generation release.Therefore, at any time, or the cylinder pin is in lockup state, or the arm pin is in lockup state, perhaps locking simultaneously, and the state of the two release simultaneously can not appear.Owing to the above-mentioned interlocking capability of bolt device, reduced the fault rate of hoisting crane, guaranteed safety, the reliability and stability of single-cylinder plug type telescopic jib crane in practical work process.
As shown in Figure 1, Fig. 1 is the structural representation of existing a kind of comparatively typical synchronous interlock of bolt mechanism.
This device is made up of cylinder pin 211, cylinder pin 221, connecting rod 7 and transmission gear 71,72, transmission gear 71 and 72 is individually fixed in the two ends of connecting rod 7, and mesh with cylinder pin 211 and cylinder pin 221 respectively, when the arm pin is in released state, when the arm pin was realized locking to cylinder pin 211, cylinder pin 211 can not move, and causes connecting rod 7 not rotate, therefore cylinder pin 221 can not move, thereby the arm pin has been realized locking to cylinder pin up and down.But in practical work process, reason owing to various complexity, the propelling thrust of cylinder pin 211 and cylinder pin 221 can not be equal fully, act on the size of the power on the connecting rod 7 also with regard to difference by the cylinder pin like this, therefore connecting rod is subjected to moment of torsion to a certain degree, if things go on like this can reduce the service life of cylinder pin and connecting rod, more be unfavorable for the stability in the telescopic arm crane work.
Therefore, how on the basis of original bolt mechanism, under the prerequisite that does not increase the telescopic boom inner space, the assurance bolt mechanism is accomplished the latch interlocking in practical work process, reduce bolt mechanism labile factor in the course of the work, and increase service life of each parts in the bolt mechanism as far as possible, be that following those skilled in the art are to the direction of single-cylinder bolt telescoping mechanism optimal design.
Summary of the invention
The purpose of this invention is to provide a kind of hoisting crane latch interlock, this latch interlock is on the basis of original bolt mechanism, reduced processing and manufacturing difficulty to a great extent, overcome the labile factor of above-mentioned existence, and well guaranteed the interlocking capability of bolt mechanism in practical work process, reduced fault rate, for further developing of large-tonnage car hosit provides guarantee.Another object of the present invention has provided a kind of single-cylinder bolt type telescopic boom and a kind of hoisting crane that comprises above-mentioned single-cylinder bolt type telescopic boom that comprises above-mentioned latch interlock.
In order to solve the problems of the technologies described above, the invention provides a kind of hoisting crane latch interlock, comprise pin pulling out device dovetail furrow, the mechanical lock of captiveing joint with dovetail furrow, the motion path of described dovetail furrow is vertical mutually with the axis of cylinder pin, the motion path of the motion path of described upper cylinder half pin and dovetail furrow intersects simultaneously, and the motion path of following cylinder pin and the motion path of mechanical lock intersect.When described arm pin moved to unlocked position, the arm pin oil cylinder of pulling pin drove dovetail furrow and pins the upper cylinder half pin, and dovetail furrow drives mechanical lock and pins cylinder pin down simultaneously; When the cylinder pin moved to unlocked position, the upper cylinder half pin pinned dovetail furrow by the cylinder shank, pinned mechanical lock with cylinder pin at present by the cylinder shank, thereby direct and indirect the arm pin had been realized locking.
Particularly, the various term positions that relate to herein refer to the in running order position of bolt mechanism, are that benchmark is defined with the center of bolt mechanism, should be understood to the protection domain that term position that this paper takes should in no way limit this patent.
Preferably, when described arm pin was in the unlocked position, described dovetail furrow and mechanical lock pinned upper cylinder half pin and following cylinder pin respectively.
Preferably, above-mentioned mechanical lock adopts mechanical system to captive joint with dovetail furrow, guarantees the synchronism of the two, and transmission simultaneously more steadily, has reliably reduced the fault rate of hoisting crane.
Preferably, when described cylinder pin was in the unlocked position, the upper cylinder half pin carried out locking by the cylinder shank to dovetail furrow, and following cylinder pin carries out locking by the cylinder shank to mechanical lock, thus arm pin and dovetail furrow all can not move, thereby directly and indirectly the arm pin has been carried out locking.
Preferably, described upper cylinder half pin and play cylinder pin in same plane, and the upper cylinder half pin be in time cylinder pin directly over.
The present invention also provides a kind of single-cylinder bolt type telescopic boom of latch interlock as mentioned above that comprises.
The present invention also provides a kind of hoisting crane that comprises aforesaid single-cylinder bolt type telescopic boom.
A kind of hoisting crane provided by the present invention is with in the latch interlock, the motion path of the pin pulling out device dovetail furrow of arm pin is vertical mutually with the motion path of upper cylinder half pin, the motion path of the motion path of mechanical lock and following cylinder pin is vertical mutually, when the arm pin moves to unlocked position, the pin pulling out device dovetail furrow of arm pin pins the upper cylinder half pin, and mechanical lock pins cylinder pin down; When the cylinder pin moved to unlocked position, the upper cylinder half pin pinned dovetail furrow by the cylinder shank, and following cylinder pin pins mechanical lock by the cylinder shank, thereby direct and indirect the arm pin was carried out locking.
Simultaneously because the upper cylinder half pin directly carries out locking to dovetail furrow, the height of dovetail furrow on bolt mechanism can obviously be reduced, reduced the volume of interlock when having strengthened the stroke of arm pin, for the load-carrying capacity that has further strengthened bolt mechanism provides arrangement space, simultaneously also improved the degree of utilization of minor details telescopic boom inner space greatly, thereby also further improved lifting altitude and the hoisting capacity of hoisting crane, met the development tendency of following hoister in large tonnage.
Single-cylinder bolt type telescopic boom provided by the present invention and telescopic boom hoisting crane are owing to comprise above-mentioned latch interlock, and beneficial effect obvious and the latch interlock is similar, does not repeat them here.
Description of drawings
Fig. 1 is the generalized section of the synchronous interlock of a kind of single-cylinder bolt in the prior art.
Fig. 2 is the perspective view that waits the axle side direction of bolt mechanism provided by the present invention.
Fig. 3 is that the axle that waits of latch interlock provided by the present invention is surveyed the perspective view of direction.
Fig. 4 is the structural representation of the pin-shaped attitude of latch interlock cylinder pin lockup arm provided by the present invention.
Fig. 5 ends the structural representation of the pin-shaped attitude of cylinder for latch interlock arm lock provided by the present invention.
Fig. 6 is the perspective view of a kind of angle of latch interlock provided by the present invention and bolt mechanism cooperation.
Fig. 7 is the structural representation of bolt mechanism provided by the present invention and telescopic boom mated condition.
Accompanying drawing has constituted the part of this specification sheets, and is used for illustrating principle of the present invention with specification sheets.
Shown in Fig. 2 to Fig. 7:
1, cylinder head body; 21, upper cylinder half pin;
22, following cylinder pin; 3, dovetail furrow;
4, mechanical lock; 5, arm pin;
6, telescopic boom.
The specific embodiment
Core of the present invention provides a kind of hoisting crane latch interlock, this latch interlock is on the basis of original bolt mechanism, reduced the processing and manufacturing difficulty of cylinder head body to a great extent, overcome the labile factor of the above-mentioned existence of bolt mechanism, and well guaranteed the interlocking capability of bolt mechanism in practical work process, reduced fault rate, for further developing of large-tonnage car hosit provides guarantee.Another core of the present invention provides a kind of single-cylinder bolt type telescopic boom and a kind of hoisting crane that comprises above-mentioned single-cylinder bolt type telescopic boom of above-mentioned latch interlock.
In order to make those skilled in the art person better understand technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the perspective view that waits the axle side direction of bolt mechanism provided by the present invention; Fig. 3 is that the axle that waits of latch interlock provided by the present invention is surveyed the perspective view of direction.
As shown in Figure 3, in a kind of specific embodiment, latch interlock provided by the present invention comprises upper cylinder half pin 21, following cylinder pin 22, dovetail furrow 3, mechanical lock 4, dovetail furrow adopts mechanical system to captive joint with mechanical lock, when the oil cylinder of pulling pin (not doing view mark) promotes dovetail furrow realization up-and-down movement, mechanical lock is movement therewith also, when therefore bolt mechanism was in different mode of operations, the position of mechanical lock in the cylinder head body was also different thereupon, thereby mechanical lock carries out locking or release to the cylinder pin.
As shown in Figure 4, Fig. 4 is the structural representation of the pin-shaped attitude of latch interlock cylinder pin lockup arm provided by the present invention; In specific implementation process, when cylinder pin 21, cylinder pin 22 were withdrawn under the effect of driving oil cylinder synchronously, 21 pairs of dovetail furrows of cylinder pin 3 carried out locking, and 22 pairs of mechanical locks of cylinder pin 4 have carried out locking, mechanical lock and dovetail furrow all can not move, and therefore, make the arm pin be in lockup state all the time.
Fig. 5 ends the structural representation of the pin-shaped attitude of cylinder for latch interlock arm lock provided by the present invention; When the arm pin was removed locking between the telescopic boom under the arm pin is pulled pin the effect of oil cylinder, the oil cylinder of pulling pin drove dovetail furrow 3 simultaneously and moves downward, and realizes the locking to upper cylinder half pin 21, and dovetail furrow 3 drives mechanical locks 4 motions simultaneously, realized the locking of cylinder pin 22 down; At this moment all cylinder pins all are in lockup state, thereby the single-cylinder bolt telescoping mechanism can promote safe and reliable the stretching of telescopic boom by the latch interlock.
Fig. 7 is the structural representation of bolt mechanism provided by the present invention and telescopic boom mated condition.When telescopic oil cylinder promotion telescopic boom moves to assigned address, the oil cylinder of pulling pin promotes the dovetail furrow releasing to the locking of arm pin, arm pin 5 ejects under the effect of spring (not shown) power, and this joint telescopic boom and a last joint telescopic boom are locked, and at this moment cylinder pin and arm pin are in lockup state simultaneously.Thereby at any mode of operation, cylinder pin and arm pin have at least one to be in lockup state, thereby guarantee telescoping mechanism safe and reliable in practical work process.
Except above-mentioned latch interlock, the present invention also provides a kind of single-cylinder bolt type telescopic boom and a kind of hoisting crane that comprises above-mentioned single-cylinder bolt type telescopic boom that comprises above-mentioned latch interlock, the structure of other each several parts of this single-cylinder bolt type telescopic boom and this hoisting crane please refer to prior art, and this paper repeats no more.
More than hoisting crane provided by the present invention and single-cylinder bolt type telescopic boom thereof and latch interlock are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the principle of the invention, can also carry out some improvements and modifications to the present invention, these improvements and modifications also fall in the protection domain of claim of the present invention.

Claims (7)

1. hoisting crane latch interlock, it is characterized in that, described hoisting crane comprises pin pulling out device dovetail furrow (3), the mechanical lock (4) of captiveing joint with dovetail furrow (3) with the latch interlock, the motion path of described dovetail furrow (3) is vertical mutually with the axis of cylinder pin, the motion path of the motion path of upper cylinder half pin (21) and dovetail furrow (3) intersects simultaneously, and the motion path of the motion path of following cylinder pin (22) and mechanical lock (4) intersects; When arm pin (5) when moving to unlocked position, the arm pin oil cylinder of pulling pin drives dovetail furrow (3) and pins upper cylinder half pin (21), and dovetail furrow (3) drives mechanical lock (4) and pins cylinder pin (22) down simultaneously; When the cylinder pin moved to unlocked position, upper cylinder half pin (21) pinned dovetail furrow (3) by the cylinder shank, pinned mechanical lock (4) with cylinder pin (22) at present by the cylinder shank, thereby direct and indirect arm pin (5) had been realized locking.
2. hoisting crane according to claim 1 latch interlock is characterized in that, when described arm pin (5) when being in the unlocked position, described dovetail furrow (3) and mechanical lock (4) pin upper cylinder half pin (21) and following cylinder pin (22) respectively.
3. hoisting crane according to claim 1 latch interlock is characterized in that, described mechanical lock (4) adopts mechanical system to captive joint with dovetail furrow (3).
4. hoisting crane according to claim 1 latch interlock, it is characterized in that, described upper cylinder half pin (21) carries out locking by the cylinder shank to dovetail furrow (3), following cylinder pin (22) carries out locking by the cylinder shank to mechanical lock (4), so arm pin (5) and dovetail furrow (3) all can not move, thereby directly and indirectly arm pin (5) has been carried out locking.
5. hoisting crane according to claim 1 latch interlock is characterized in that, described upper cylinder half pin (21) and following cylinder pin (22) in same plane, and upper cylinder half pin (21) be in following cylinder pin (22) directly over.
6. a single-cylinder bolt type telescopic boom is characterized in that, the latch interlock of described single-cylinder bolt type telescopic boom is each described hoisting crane latch interlock of claim 1 to 5.
7. the hoisting crane of a single-cylinder bolt type telescopic boom is characterized in that, the telescopic boom of the hoisting crane of described single-cylinder bolt type telescopic boom is the described single-cylinder bolt type telescopic boom of claim 6.
CN201110085944XA 2011-04-07 2011-04-07 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane CN102153023B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110085944XA CN102153023B (en) 2011-04-07 2011-04-07 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110085944XA CN102153023B (en) 2011-04-07 2011-04-07 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane

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CN102153023A CN102153023A (en) 2011-08-17
CN102153023B true CN102153023B (en) 2013-09-25

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102491198B (en) * 2011-11-29 2014-09-10 三一汽车起重机械有限公司 Single-cylinder bolt oil cylinder, and telescopic boom device and crane having single-cylinder bolt oil cylinder
CN102556858A (en) * 2011-12-30 2012-07-11 大连理工大学 Arm support insertion pin mechanism for realizing synchronous motion of cylinder pins by adopting rack transmission
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
CN102788060B (en) * 2012-08-27 2015-09-16 徐州重型机械有限公司 The cylinder head of single cylinder bolt-type hoist and telescopic oil cylinder thereof, telescopic oil cylinder
CN103058078B (en) * 2013-01-17 2015-01-21 大连理工大学 Single-cylinder plug type retractable arm and hydraulic plug interlocking device thereof
CN104150377B (en) * 2014-08-29 2016-04-27 徐州重型机械有限公司 A kind of horizontal pin inserting-pulling device, bolt-type telescopic arm and hoisting crane
CN104649158B (en) * 2015-03-03 2017-08-08 徐州重型机械有限公司 Cylinder head body, single cylinder bolt system and crane
CN105923555B (en) * 2016-05-12 2017-11-24 徐州重型机械有限公司 Cylinder arm pin mechanical interlock, single-cylinder bolt telescopic system and flexible arm component

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FR2797862A1 (en) * 1999-09-01 2001-03-02 Ppm Jib extension and locking system, for crane with telescopic jib, has latches between jib sections released and re-locked before and after jib length adjustment
CN1600671A (en) * 2004-10-12 2005-03-30 大连理工大学 Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder
JP2006290480A (en) * 2005-04-06 2006-10-26 Kato Works Co Ltd Mobile crane
WO2007052339A1 (en) * 2005-11-01 2007-05-10 Kato Works Co., Ltd. Boom telescoping device for crane
CN101513976A (en) * 2009-03-31 2009-08-26 沈阳北方交通重工有限公司 Control device for telescopic arm of single telescopic cylinder of vehicle crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797862A1 (en) * 1999-09-01 2001-03-02 Ppm Jib extension and locking system, for crane with telescopic jib, has latches between jib sections released and re-locked before and after jib length adjustment
CN1600671A (en) * 2004-10-12 2005-03-30 大连理工大学 Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder
JP2006290480A (en) * 2005-04-06 2006-10-26 Kato Works Co Ltd Mobile crane
WO2007052339A1 (en) * 2005-11-01 2007-05-10 Kato Works Co., Ltd. Boom telescoping device for crane
CN101513976A (en) * 2009-03-31 2009-08-26 沈阳北方交通重工有限公司 Control device for telescopic arm of single telescopic cylinder of vehicle crane

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