CN102556858A - Arm support insertion pin mechanism for realizing synchronous motion of cylinder pins by adopting rack transmission - Google Patents

Arm support insertion pin mechanism for realizing synchronous motion of cylinder pins by adopting rack transmission Download PDF

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Publication number
CN102556858A
CN102556858A CN2011104518726A CN201110451872A CN102556858A CN 102556858 A CN102556858 A CN 102556858A CN 2011104518726 A CN2011104518726 A CN 2011104518726A CN 201110451872 A CN201110451872 A CN 201110451872A CN 102556858 A CN102556858 A CN 102556858A
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CN
China
Prior art keywords
pin
cylinder
arm
tie
withdrawal
Prior art date
Application number
CN2011104518726A
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Chinese (zh)
Inventor
王鑫
刘宝隆
高顺德
闫俊慧
侯娜
项慧
郭博雯
薛金星
Original Assignee
大连理工大学
大连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 filed Critical 大连理工大学
Priority to CN2011104518726A priority Critical patent/CN102556858A/en
Publication of CN102556858A publication Critical patent/CN102556858A/en

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Abstract

The invention discloses an arm support insertion pin mechanism for realizing synchronous motion of cylinder pins by adopting rack transmission. The arm support insertion pin mechanism comprises an arm pin insertion and extraction mechanism, a cylinder pin stretching mechanism, a locking pin interlocking mechanism and a locking pin detection mechanism, wherein the arm pin insertion and extraction mechanism comprises two pull plate contraction oil cylinders (3); one end of an arm pin pull plate (2) is connected with an arm pin, and the other end of the arm pin pull plate (2) is connected with the pull plate contraction oil cylinders (3); the cylinder pin stretching mechanism comprises two pairs of upper cylinder pins (5) and lower cylinder pins (6) which are connected by a rack transmission mechanism and synchronized; and the locking pin interlocking mechanism realizes interlocking by occupying a space by the arm pin pull plate (2) and the upper cylinder pins (5). The cylinder pins are synchronized to operate by the rack transmission mechanism; a phenomenon of arm falling is avoided by a mutual occupied physical interlocking mode; and the arm support insertion pin mechanism has a safe and reliable structure and low fault rate.

Description

Adopt rack driven to realize the jib bolt mechanism that the cylinder pin is synchronized with the movement
Technical field
The present invention relates to the hoisting crane field, particularly a kind of rack driven that adopts is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement.
Background technology
At present, large-tonnage multi-stage telescopic arms crane arm support telescoping mechanism generally adopts the single cylinder telescoping mechanism.It mainly comprises telescopic oil cylinder, cylinder pin bolt mechanism, arm pin inserting mechanism, lock pin mutual interlocking gear, lock pin testing agency etc.When jib need move, cylinder pin bolt mechanism was released the cylinder pin, and the cylinder pin injects jib, and telescopic oil cylinder and internal segment jib are linked into an integrated entity.Afterwards, the arm pin inserting mechanism is extracted the arm pin on the internal segment jib, and internal segment jib and acromere arm are broken away from.Telescopic oil cylinder motion then drives the motion of internal segment jib.After the internal segment arm moved to assigned address, the arm pin inserting mechanism was released the arm pin on the internal segment jib, and internal segment jib and acromere arm are linked into an integrated entity.Cylinder pin bolt mechanism is extracted the cylinder pin, and telescopic oil cylinder and internal segment jib are broken away from.The oil cylinder independently moving repeats above process and accomplishes next jib motion process to next arm pin place.When jib stretches, require lock pin testing agency etc. to detect the position of cylinder pin and arm pin,, then can not carry out the oil cylinder expanding-contracting action if cylinder pin or arm pin are not in place.Be security consideration in addition, require cylinder pin and arm pin to have interlock function, prevent that cylinder pin and arm pin from taking off the hole in the course of the work simultaneously, have an accident.Therefore the cylinder pin be synchronized with the movement and the interlocking of cylinder pin and arm pin is the key of raising telescoping mechanism even hoisting crane resistance to overturning and safety.
Summary of the invention
In order to improve telescoping mechanism even hoisting crane single-piece stability and safety, the present invention provides a kind of rack driven that adopts to realize the jib bolt mechanism that the cylinder pin is synchronized with the movement.
The objective of the invention is to reach: provide a kind of rack driven that adopts to realize the jib bolt mechanism that the cylinder pin is synchronized with the movement through following measure.
Said employing rack driven realizes that the jib bolt mechanism that the cylinder pin is synchronized with the movement comprises arm pin inserting mechanism, cylinder pin telescoping mechanism, lock pin mutual interlocking gear and lock pin testing agency four parts:
Said arm pin inserting mechanism comprises: vertically arranged two arm-ties withdrawal of left-right symmetric oil cylinder 3; Two vertical arm-ties stretch out spring 4 one ends and are fixed in cylinder head seat 1, and the other end links to each other with the piston of two arm-tie withdrawal oil cylinders 3 respectively; Arm pin arm-tie 2 two ends connect arm-tie withdrawal oil cylinder 3 respectively, and the middle part dovetail furrow is used for the connecting arm pin.
Said cylinder pin telescoping mechanism comprises: two upper cylinder half pins 5 that the upside left-right symmetric is installed; The downside left-right symmetric install two following cylinder pins 6; Adopt rack gear to connect every pair of upper cylinder half pin 5 and following cylinder pin 6; Four cylinder pins stretch out spring 9 one ends and are arranged in upper cylinder half pin 5 or following cylinder pin 6 inside, and the other end links to each other with cylinder head seat 1; Each upper cylinder half pin 5 or following cylinder pin 6 link to each other with former and later two cylinder pin oil cylinders 10 through the flange of center; Upper cylinder half pin 5, cylinder pin 6 and 8 cylinder pin oil cylinder 10 average levels installations down.Because the engagement of cylinder pin transmission gear 7 and tooth bar 8, upper cylinder half pin 5 will stretch out or withdraw with following cylinder pin 6 synchronously.
Said lock pin mutual interlocking gear comprises: arm pin arm-tie 2, one ends of centered are fixed in an arm-tie withdrawal oil cylinder 3; Arm pin arm-tie 2 is installed on same horizontal surface with upper cylinder half pin 5, when upper cylinder half pin 5 is inwardly withdrawn, occupies the lower space of arm pin arm-tie 2; When 2 withdrawals of arm pin arm-tie, occupy the space of upper cylinder half pin 5 withdrawals; Realize the interlocking of arm pin arm-tie 2 and upper cylinder half pin 5.
Described lock pin testing agency is characterized in that, said lock pin testing agency comprises: be provided with the induction boss in arm pin arm-tie 2; Be provided with the location sensitive bolt in upper cylinder half pin 5; Detect arm-tie and stretch out sensor 11 and arm-tie withdrawal sensor 12 each, two upper cylinder half pins withdrawal sensors 13 and two upper cylinder half pins of detecting two upper cylinder half pin 5 positions respectively stretch out sensor 14, all are installed on the cylinder head seat 1.
One preferred version is: said upper cylinder half pin 5 is circular bearing pin with following cylinder pin 6, and is provided with flange, blind hole and tooth bar.
One preferred version is: said rack gear comprises two tooth bars 8 and four cylinder pin transmission gears 7; Four cylinder pin transmission gears 7 respectively upper cylinder half pin 5 and down the lateral longitudinal of cylinder pin 6 to arranging and being engaged with; Two pairs of cylinder pin transmission gears 7 mesh with vertically arranged tooth bar oil cylinder 8 respectively.
One preferred version is: said arm pin arm-tie 2 has dovetail furrow.
One preferred version is: said arm-tie stretches out spring 4 and stretches out spring 9 with the cylinder pin and be spiral compression spring.
Beneficial effect: the present invention adopts rack gear to make cylinder pin synchronization action, adopts the anti-anti-avulsion arm of physics interlock mode of mutual occupy-place in addition, and structural safety is reliable, and fault rate is low.
Description of drawings
Fig. 1 is a rack driven mutual interlocking gear scheme drawing of the present invention, and the arm pin inserting mechanism is in retracted mode among the figure, and cylinder pin telescoping mechanism is in the state of stretching out.
Fig. 2 is the A-A cutaway view of Fig. 1, and the arm pin inserting mechanism is in the state of stretching out among the figure, and cylinder pin telescoping mechanism is in retracted mode.
Fig. 3 is arm pin arm-tie testing process figure of the present invention.
Fig. 4 is cylinder pin testing process figure of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Referring to figs. 1 through 4, in the present embodiment, said employing rack driven realizes that the jib bolt mechanism that the cylinder pin is synchronized with the movement comprises arm pin inserting mechanism, cylinder pin telescoping mechanism, lock pin mutual interlocking gear and lock pin testing agency four parts.
Said arm pin inserting mechanism comprises: vertically arranged two arm-ties withdrawal of left-right symmetric oil cylinder 3; Two vertical arm-ties stretch out spring 4 one ends and are fixed in cylinder head seat 1, and the other end links to each other with the piston of two arm-tie withdrawal oil cylinders 3 respectively; Arm pin arm-tie 2 two ends connect arm-tie withdrawal oil cylinder 3 respectively, and the middle part dovetail furrow is used for the connecting arm pin; The direction of action that arm pin arm-tie 2, arm-tie withdrawal oil cylinder 3 and arm-tie stretch out spring 4 is above-below direction.
Said cylinder pin telescoping mechanism comprises: two upper cylinder half pins 5 that the upside left-right symmetric is installed; Two following cylinder pins 6 that the downside left-right symmetric is installed; Adopt rack gear to connect every pair of upper cylinder half pin 5 and following cylinder pin 6; Four cylinder pins stretch out spring 9 one ends and are arranged in upper cylinder half pin 5 or following cylinder pin 6 inside, and the other end links to each other with cylinder head seat 1; Each upper cylinder half pin 5 or following cylinder pin 6 link to each other with former and later two cylinder pin oil cylinders 10 through the flange of center; Upper cylinder half pin 5, cylinder pin 6 and 8 cylinder pin oil cylinder 10 average levels installations down.Upper cylinder half pin 5, down cylinder pin 6 and cylinder pin oil cylinder 10 be inside and outside horizontal motion, and cylinder pin transmission gear 7 is around its rotational, and tooth bar 8 be a perpendicular movement up and down, and owing to the engagement of cylinder pin transmission gear 7 and tooth bar 8, upper cylinder half pin 5 and following cylinder pin 6 will stretch out or withdraw synchronously.
Said lock pin mutual interlocking gear comprises: arm pin arm-tie 2, one ends of centered are fixed in an arm-tie withdrawal oil cylinder 3; Arm pin arm-tie 2 is installed on same horizontal surface with upper cylinder half pin 5, when upper cylinder half pin 5 is inwardly withdrawn, occupies the lower space of arm pin arm-tie 2; When 2 withdrawals of arm pin arm-tie, occupy the space of upper cylinder half pin 5 withdrawals; Realize the interlocking of arm pin arm-tie 2 and upper cylinder half pin 5.
Described lock pin testing agency is characterized in that, said lock pin testing agency comprises: be provided with the induction boss in arm pin arm-tie 2; Be provided with the location sensitive bolt in upper cylinder half pin 5; Detect arm-tie and stretch out sensor 11 and arm-tie withdrawal sensor 12 each, two upper cylinder half pins withdrawal sensors 13 and two upper cylinder half pins of detecting two upper cylinder half pin 5 positions respectively stretch out sensor 14, all are installed on the cylinder head seat 1.
Said upper cylinder half pin 5 is circular bearing pin with following cylinder pin 6, and is provided with flange, blind hole and tooth bar.
Said rack gear comprises two tooth bars 8 and four cylinder pin transmission gears 7; Four cylinder pin transmission gears 7 respectively upper cylinder half pin 5 and down the lateral longitudinal of cylinder pin 6 to arranging and being engaged with; Two pairs of cylinder pin transmission gears 7 mesh with vertically arranged tooth bar oil cylinder 8 respectively.
Said arm pin arm-tie 2 has dovetail furrow.
Said arm-tie stretches out spring 4 and stretches out spring 9 with the cylinder pin and be spiral compression spring.
Workflow: when jib need move; High-pressure and hydraulic in the rodless cavity of cylinder pin oil cylinder 10 oil is discharged; The compressive force that stretches out spring 9 when the compressor cylinder pin is during greater than the making a concerted effort of cylinder pin oil cylinder 10 rodless cavity pressure, gear train assembly resistance and mechanism's friction drag; The cylinder pin stretches out spring 9 and ejects, and promotes upper cylinder half pin 5 (or following cylinder pin 6) and stretches out.Because the stretching out of upper cylinder half pin 5, thereby abdicate the lower space of arm pin arm-tie 2, make arm pin arm-tie 2 can move downward and occupy this space.Because the rack driven of upper cylinder half pin 5 and following cylinder pin 6, upper cylinder half pin 5 stretches out with following cylinder pin 6 simultaneously, and telescopic oil cylinder is linked to each other with the internal segment jib.The rod chamber of the oil cylinder 3 of the arm-tie of arm pin inserting mechanism withdrawal afterwards gets into high-pressure and hydraulic oil, and the piston that promotes arm-tie withdrawal oil cylinder 3 moves downward, and the compression arm-tie stretches out spring 4, and then drives 2 withdrawals of arm pin arm-tie.2 withdrawals of arm pin arm-tie, the withdrawal of stretching arm pin breaks away from internal segment jib and acromere arm.When the telescopic oil cylinder motion, drive the motion of internal segment jib.In the motion process, arm pin arm-tie 2 occupies the space of upper cylinder half pin 5 withdrawal all the time, and upper cylinder half pin 5 can't be withdrawn, thus prevent in the motion process upper cylinder half pin 5 and down cylinder pin 6 separate with the internal segment arm, anti-anti-avulsion arm accident takes place.
When the internal segment jib moves to assigned address; High-pressure and hydraulic oil in arm-tie withdrawal oil cylinder 3 rod chambers discharges, and the compressive force that stretches out spring 4 when arm-tie is during greater than the making a concerted effort of arm-tie withdrawal oil cylinder 3 rod chamber pressure and mechanism's gravity, resistance, and arm-tie stretches out spring 4 and ejects; Promote arm-tie withdrawal oil cylinder 3 piston upward movements; And then driving arm pin arm-tie 2 upward movements, the pusher arm pin stretches out, and internal segment jib and acromere arm are linked into an integrated entity.Simultaneously, form the space, upper cylinder half pin 5 can be withdrawn, occupy the lower space of arm pin arm-tie 2 in arm pin arm-tie 2 bottoms.The rodless cavity of cylinder pin oil cylinder 10 gets into high-pressure and hydraulic oil afterwards, and the plunger that promotes cylinder pin oil cylinder 10 inwardly moves, and then promotes upper cylinder half pin 5 (or following cylinder pin 6) withdrawal, and the compressor cylinder pin stretches out spring 9 simultaneously.Because upper cylinder half pin 5 and the withdrawal of cylinder pin 6 down break away from telescopic oil cylinder and internal segment jib, telescopic oil cylinder can independently moving.During the telescopic oil cylinder independently moving, because upper cylinder half pin 5 all the time in occupation of the lower space of arm pin arm-tie 2, can't move downward arm pin arm-tie 2.Thereby next target-arm pin can accurately slide into beginning next round jib motion in the dovetail furrow on the arm pin arm-tie 2.
When jib stretches, be security consideration, require to detect the position of cylinder pin and arm pin, not in place like cylinder pin or arm pin, can not carry out the oil cylinder expanding-contracting action.Arm-tie stretches out sensor 11, arm-tie withdrawal sensor 12, upper cylinder half pin withdrawal sensor 13, upper cylinder half pin and stretches out sensor 14 and be installed in cylinder head seat 1 respectively.Arm-tie stretches out sensor 11, arm-tie withdrawal sensor 12 quantity are respectively one, is used for the position of detection arm pin arm-tie 2.Upper cylinder half pin withdrawal sensor 13, upper cylinder half pin stretch out sensor 14 quantity and are respectively two, are used to detect the position of upper cylinder half pin 5.As shown in Figure 3, and if only if arm-tie stretches out sensor 11 electric, promptly arm pin arm-tie 2 is in when stretching the position entirely, just can carry out the withdrawal action of cylinder pin.In like manner, and if only if two upper cylinder half pins withdrawal sensors 13 simultaneously electric, promptly two upper cylinder half pins 5 all are in when stretching the position entirely, and are as shown in Figure 4, just can carry out the withdrawal of arm pin arm-tie 2 and move.
Specific embodiment 1, the jib bolt mechanism that adopts rack driven to realize that the cylinder pin is synchronized with the movement comprises following four parts.
One, arm pin inserting mechanism.
As shown in Figure 1, the arm pin inserting mechanism is for being symmetrically arranged, and comprises that promptly the arm pin arm-tie 2 of a middle position, the arm-tie withdrawal oil cylinder 3 of two symmetric arrangement and the arm-tie of two symmetric arrangement stretch out spring 4.Arm-tie withdrawal oil cylinder 3 arranges that vertically the cylinder bar upwards links to each other with arm pin arm-tie 2.Arm-tie stretches out spring 4 and is spiral compression spring, is arranged in arm-tie withdrawal oil cylinder 3 bottoms, and an end links to each other with cylinder head seat 1, and an end links to each other with the piston of arm-tie withdrawal oil cylinder 3.The direction of action that arm pin arm-tie 2, arm-tie withdrawal oil cylinder 3 and arm-tie stretch out spring 4 is above-below direction.
Arm-tie withdrawal oil cylinder 3 rod chambers get into high-pressure and hydraulic oil, and the piston that promotes arm-tie withdrawal oil cylinder 3 moves downward, and then drive 2 withdrawals of arm pin arm-tie.Stretch out spring 4 to the lower compression arm-tie simultaneously.
The high-pressure and hydraulic oil that arm-tie is withdrawn in oil cylinder 3 rod chambers discharges; The compressive force that stretches out spring 4 when arm-tie is during greater than the making a concerted effort of arm-tie withdrawal oil cylinder 3 rod chamber pressure and mechanism's gravity, resistance; Arm-tie stretches out spring 4 and ejects; Promote arm-tie withdrawal oil cylinder 3 piston upward movements, and then drive arm pin arm-tie 2 stretches out.
Two, cylinder pin telescoping mechanism.
Like Fig. 1, Fig. 2, shown in Figure 3, cylinder pin telescoping mechanism is for being symmetrically arranged, and promptly the quantity of upper cylinder half pin 5, following cylinder pin 6, tooth bar 8 is two, and the quantity that cylinder pin transmission gear 7 and cylinder pin stretch out spring 9 is four, and the quantity of cylinder pin oil cylinder 10 is eight.Upper cylinder half pin 5 and down cylinder pin 6 horizontal cross arrange, cylinder pin transmission gear 7 respectively upper cylinder half pin 5 and down the lower horizontal of cylinder pin 6 vertically arrange and be engaged with.Tooth bar 8 arranges that vertically its axis is parallel with arm-tie withdrawal oil cylinder 3, and two cylinder pin transmission gears 7 mesh with tooth bar 8 respectively up and down.The cylinder pin stretches out spring 9 and is spiral compression spring, is arranged in upper cylinder half pin 5 (or following cylinder pin 6) inside, and an end links to each other with cylinder head seat 1, and an end links to each other with upper cylinder half pin 5 (or following cylinder pin 6).Upper cylinder half pin 5 (or following cylinder pin 6) links to each other with former and later two cylinder pin oil cylinders 10 through the flange of center, and cylinder pin oil cylinder 10 is unidirectional plunger cylinder, is arranged on the same horizontal surface with upper cylinder half pin 5 (or following cylinder pin 6) front and back.
Upper cylinder half pin 5, down cylinder pin 6 and cylinder pin oil cylinder 10 be inside and outside horizontal motion, and cylinder pin transmission gear 7 is around its rotational, tooth bar 8 be about perpendicular movement.Because the engagement of cylinder pin transmission gear 7 and tooth bar 8, upper cylinder half pin 5 will stretch out or withdraw with following cylinder pin 6 synchronously.
Cylinder pin oil cylinder 10 rodless cavities get into high-pressure and hydraulic oil, and the plunger that promotes cylinder pin oil cylinder 10 inwardly moves, and then promote upper cylinder half pin 5 (or following cylinder pin 6) withdrawal, and the compressor cylinder pin stretches out spring 9 simultaneously.
High-pressure and hydraulic in cylinder pin oil cylinder 10 rodless cavities oil is discharged; The compressive force that stretches out spring 9 when the compressor cylinder pin is during greater than the making a concerted effort of cylinder pin oil cylinder 10 rodless cavity pressure, gear train assembly resistance and mechanism's friction drag; The cylinder pin stretches out spring 9 and ejects, and promotes upper cylinder half pin 5 (or following cylinder pin 6) and stretches out.
Two, lock pin mutual interlocking gear.
As shown in Figure 2, arm pin arm-tie 2 is arranged on the same longitudinal cross-section with upper cylinder half pin 5.
Arm pin arm-tie 2 upward movements, the pusher arm pin stretches out, and internal segment jib and acromere arm are linked into an integrated entity.Simultaneously, form the space, upper cylinder half pin 5 can be withdrawn, occupy the lower space of arm pin arm-tie 2 in arm pin arm-tie 2 bottoms.Because upper cylinder half pin 5 and the withdrawal of cylinder pin 6 down break away from telescopic oil cylinder and internal segment jib, telescopic oil cylinder can independently moving.During the telescopic oil cylinder independently moving, because upper cylinder half pin 5 all the time in occupation of the lower space of arm pin arm-tie 2, can't move downward arm pin arm-tie 2.Thereby next target-arm pin can accurately slide in the dovetail furrow on the arm pin arm-tie 2.
As shown in Figure 1, after next target-arm pin accurately slides into the relevant position in the dovetail furrow on the arm pin arm-tie 2, the telescopic oil cylinder stop motion.Cylinder pin 6 stretched out under upper cylinder half pin 5 reached, and telescopic oil cylinder and internal segment arm are linked into an integrated entity.Simultaneously, upper cylinder half pin 5 is abdicated the lower space of arm pin arm-tie 2, makes arm pin arm-tie 2 can move downward and occupy this space.Arm pin arm-tie 2 moves downward, and drives the withdrawal of arm pin, and the internal segment jib is separated with the acromere arm.When telescopic oil cylinder moves, drive the internal segment arm and move together.In the fortune merits and demerits journey, arm pin arm-tie 2 occupies the space of upper cylinder half pin 5 withdrawals all the time, and upper cylinder half pin 5 can't be withdrawn, thus prevent in the motion process upper cylinder half pin 5 and down cylinder pin 6 separate with the internal segment arm, anti-anti-avulsion arm accident takes place.
Three, lock pin testing agency.
When jib stretches, be security consideration, require to detect the position of cylinder pin and arm pin, not in place like cylinder pin or arm pin, can not carry out the oil cylinder expanding-contracting action.
Arm-tie stretches out sensor 11, arm-tie withdrawal sensor 12, upper cylinder half pin withdrawal sensor 13, upper cylinder half pin and stretches out sensor 14 and be installed in cylinder head seat 1 respectively.Arm-tie stretches out sensor 11, arm-tie withdrawal sensor 12 quantity are respectively one, is used for the position of detection arm pin arm-tie 2.Upper cylinder half pin withdrawal sensor 13, upper cylinder half pin stretch out sensor 14 quantity and are respectively two, are used to detect the position of upper cylinder half pin 5.
As shown in Figure 3, and if only if arm-tie stretches out sensor 11 electric, promptly arm pin arm-tie 2 is in when stretching the position entirely, just can carry out the withdrawal action of cylinder pin.In like manner, and if only if two upper cylinder half pins withdrawal sensors 13 simultaneously electric, promptly two upper cylinder half pins 5 all are in when stretching the position entirely, and are as shown in Figure 4, just can carry out the withdrawal of arm pin arm-tie 2 and move.
Above content is to combine optimal technical scheme to the further explain that the present invention did, and can not assert that the practical implementation of invention only limits to these explanations.Under the present invention, the those of ordinary skill of technical field, under the prerequisite that does not break away from design of the present invention, simple deduction and replacement can also be made, all protection scope of the present invention should be regarded as.

Claims (6)

1. one kind is adopted rack driven to realize the jib bolt mechanism that the cylinder pin is synchronized with the movement; It is characterized in that said employing rack driven realizes that the jib bolt mechanism that the cylinder pin is synchronized with the movement comprises arm pin inserting mechanism, cylinder pin telescoping mechanism, lock pin mutual interlocking gear and lock pin testing agency four parts:
Said arm pin inserting mechanism comprises: vertically arranged two arm-ties withdrawal of left-right symmetric oil cylinder (3); Two vertical arm-ties stretch out spring (4) one ends and are fixed in cylinder head seat (1), and the other end links to each other with the piston of two arm-tie withdrawal oil cylinders (3) respectively; Arm pin arm-tie (2) two ends connect arm-tie withdrawal oil cylinder (3) respectively, and the middle part dovetail furrow is used for the connecting arm pin;
Said cylinder pin telescoping mechanism comprises: two upper cylinder half pins (5) that the upside left-right symmetric is installed, two following cylinder pins (6) that the downside left-right symmetric is installed; Adopt rack gear to connect every pair of upper cylinder half pin (5) and following cylinder pin (6), four cylinder pins stretch out spring (9) one ends and are arranged in upper cylinder half pin (5) or following cylinder pin (6) inside, and the other end links to each other with cylinder head seat (1); Each upper cylinder half pin (5) or following cylinder pin (6) link to each other with former and later two cylinder pin oil cylinders (10) through the flange of center; Upper cylinder half pin (5), cylinder pin (6) and the installation of 8 cylinder pin oil cylinders (10) average level down;
Said lock pin mutual interlocking gear comprises: the arm pin arm-tie (2) of centered, an end are fixed in an arm-tie withdrawal oil cylinder (3); Arm pin arm-tie (2) and upper cylinder half pin (5) are installed on same horizontal surface, when upper cylinder half pin (5) when inwardly withdrawing, occupy the lower space of arm pin arm-tie (2); When arm pin arm-tie (2) is withdrawn, occupy the space of upper cylinder half pin (5) withdrawal;
Described lock pin testing agency is characterized in that, said lock pin testing agency comprises: be provided with the induction boss in arm pin arm-tie (2); Be provided with the location sensitive bolt in upper cylinder half pin (5); Detect arm-tie and stretch out sensor (11) and respectively one of arm-tie withdrawal sensor (12); Two upper cylinder half pin withdrawal sensors (13) and two upper cylinder half pins of detecting two upper cylinder half pins (5) position respectively stretch out sensor (14), all are installed on the cylinder head seat (1).
2. employing rack driven according to claim 1 is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement, and it is characterized in that said upper cylinder half pin (5) and following cylinder pin (6) are circular bearing pin, and are provided with flange, blind hole and tooth bar.
3. employing rack driven according to claim 1 is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement, and it is characterized in that said rack gear comprises two tooth bars (8) and four cylinder pin transmission gears (7); Four cylinder pin transmission gears (7) respectively upper cylinder half pin (5) and down the lateral longitudinal of cylinder pin (6) to arranging and being engaged with; Two pairs of cylinder pin transmission gears (7) mesh with vertically arranged tooth bar (8) respectively.
4. employing rack driven according to claim 1 is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement, and it is characterized in that said arm pin arm-tie (2) has dovetail furrow.
5. employing rack driven according to claim 1 is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement, and it is characterized in that, said arm-tie stretches out spring (4) and cylinder pin, and to stretch out spring (9) be spiral compression spring.
6. employing rack driven according to claim 1 is realized the jib bolt mechanism that the cylinder pin is synchronized with the movement, and it is characterized in that said cylinder pin oil cylinder (10) is unidirectional plunger cylinder.
CN2011104518726A 2011-12-30 2011-12-30 Arm support insertion pin mechanism for realizing synchronous motion of cylinder pins by adopting rack transmission CN102556858A (en)

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CN104495649A (en) * 2014-12-19 2015-04-08 徐州重型机械有限公司 Telescopic boom and crane
WO2019148390A1 (en) * 2018-01-31 2019-08-08 徐州重型机械有限公司 Single-cylinder latch-type telescopic cylinder, telescopic boom, and construction machinery apparatus

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CN202054553U (en) * 2011-04-06 2011-11-30 大连益利亚工程机械有限公司 Telescopic arm crane, single-cylinder bolt type telescopic arm thereof and cylinder-bolt synchronization device

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WO1998054081A1 (en) * 1997-05-28 1998-12-03 Mannesmann Ag Crane with telescope jib
EP0943580A2 (en) * 1998-03-18 1999-09-22 Grove U.S. LLC Lateral jib locking device
DE19926131A1 (en) * 1999-06-09 2000-12-14 Faun Gmbh Telescopic jib has guide housing fitted in respective enclosing jib section and upon which levers carrying locking pins are movably guided by at least one force accumulator in direction of outer locked position
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Publication number Priority date Publication date Assignee Title
CN104495649A (en) * 2014-12-19 2015-04-08 徐州重型机械有限公司 Telescopic boom and crane
WO2019148390A1 (en) * 2018-01-31 2019-08-08 徐州重型机械有限公司 Single-cylinder latch-type telescopic cylinder, telescopic boom, and construction machinery apparatus

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