CN202176570U - Telescopic structure oil cylinder group - Google Patents

Telescopic structure oil cylinder group Download PDF

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Publication number
CN202176570U
CN202176570U CN2011202258081U CN201120225808U CN202176570U CN 202176570 U CN202176570 U CN 202176570U CN 2011202258081 U CN2011202258081 U CN 2011202258081U CN 201120225808 U CN201120225808 U CN 201120225808U CN 202176570 U CN202176570 U CN 202176570U
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CN
China
Prior art keywords
cylinder body
hydraulic jack
oil cylinder
bearing pin
connecting base
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Expired - Fee Related
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CN2011202258081U
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Chinese (zh)
Inventor
杨光友
张文谦
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Hubei University of Technology
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Hubei University of Technology
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Priority to CN2011202258081U priority Critical patent/CN202176570U/en
Application granted granted Critical
Publication of CN202176570U publication Critical patent/CN202176570U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a telescopic structure oil cylinder group, which comprises a first hydraulic oil cylinder and a second hydraulic oil cylinder which are reversely arranged. A rod possessing cavity of the first hydraulic oil cylinder is communicated with a rod possessing cavity of the second hydraulic oil cylinder through an oil pipe, a rod-free cavity of the first hydraulic oil cylinder is communicated with a rod-free cavity of the second hydraulic oil cylinder through an oil pipe, a piston rod head of the first hydraulic oil cylinder is connected with a fixed arm of a telescopic structure through a pin roll, a kidney-shaped slot is arranged on the connecting portion between the piston rod head of the first hydraulic oil cylinder and the fixed arm of the telescopic structure, and the pin roll is arranged in the kidney-shaped slot. A piston rod head of the second hydraulic oil cylinder is connected with the fixed arm of the telescopic structure through a pin roll, a kidney-shaped slot is arranged on the connecting portion between the piston rod head of the second hydraulic oil cylinder and the fixed arm of the telescopic structure, and the pin roll is arranged in the kidney-shaped slot. A cylinder body of the second hydraulic oil cylinder is connected with a middle arm of the telescopic structure, and a cylinder body of the first hydraulic oil cylinder is connected with the cylinder body of the second hydraulic oil cylinder through a pin roll. The telescopic structure oil cylinder group is simple in structure and convenient to use, and avoids bending and oil leakage of the piston rod of the oil cylinder caused by blocking of the oil cylinder.

Description

A kind of shrinking structure oil cylinder group
Technical field
The utility model relates to a kind of oil cylinder group of shrinking structure, especially for the oil cylinder group of road surface hoist and the multistage supporting leg shrinking structure of concrete mixer.
Background technique
At present; Large-scale road surface hoist and concrete mixer stop to go and entering work construction state in; Adopt the expansion of multi-stage expansion arm to control the support scope of supporting leg and the stability of complete machine, cause and tumble because of excessive tilting moment occurring when avoiding construction operation; At travelling state, adopt the gathering of multi-stage expansion arm to control machine shape, thereby be implemented in going on the road.Existing multi-stage expansion arm adopts oil cylinder directly to drive more, and wherein modal hydraulic oil cylinder driving mode has following several kinds:
Mode one, independent oil cylinder of employing drive.Its defective is, the supporting leg stroke limiting that stretches, and the support scope of complete machine when the construction state is little, is not enough to overcome tilting moment, therefore can not guarantee the stability of complete machine, so can only be employed on the packaged type work mechanism than the band supporting leg of small dimension.
Mode two, two independent oil cylinders of employing, each drives the one-level telescopic boom.Its defective is, when the hydraulic pressure stringing, needs to give respectively two independent oil cylinders to connect oil pipes, and the oil pipe of one of them oil cylinder must move back and forth along with the movable telescopic arm together, thereby this oil pipe easily and friction infringement oil pipe takes place between telescopic boom; Perhaps adopt extremely complicated stringing, construction and maintenance trouble.
Mode three, multi-stage oil cylinder of employing drive.Its defective is that the oil cylinder external diameter is excessive, influences the structural strength layout; It is elongated relatively to launch the back oil cylinder, and the middle appearance of oil cylinder is sagging, and Sealing is wear damage very easily, and the oil cylinder poor stability, is more prone to break down; Simultaneously, because driving force is provided by minimum oil cylinder in the multi-stage oil cylinder, driving force is less, and when unusual jam occurring, oil cylinder is not enough to promote telescopic boom, is prone to cause the oil cylinder unstability to damage.
Mode four, two oil cylinders of employing are formed a rigidly connected oil cylinder group.Though this kind mode has overcome the deficiency of above three kinds of modes owing to have necessary reasonable clearance between the telescopic boom of shrinking structure, telescopic boom stretch out after one section can occur bigger sagging, thereby cause in the telescopic process oil cylinder jam or move dumb.
Summary of the invention
The utility model technical problem to be solved provides a kind of compact structure, flexible flexible, reliable shrinking structure oil cylinder group.
The utility model is that the technological scheme that problem adopted of the above-mentioned proposition of solution is: a kind of shrinking structure oil cylinder group; First hydraulic jack and second hydraulic jack that comprise reversed arrangement; The rod chamber of the rod chamber of first hydraulic jack and second hydraulic jack is communicated with through oil pipe; The rodless cavity of the rodless cavity of first hydraulic jack and second hydraulic jack is communicated with through oil pipe; Its difference is: the piston rod head of first hydraulic jack is connected through bearing pin with the fixed arm of shrinking structure, and the joint between the piston rod head of first hydraulic jack and the fixed arm of shrinking structure is provided with kidney slot, and this bearing pin places in the kidney slot; The piston rod head of second hydraulic jack is connected through bearing pin with the telescopic boom of shrinking structure, and the joint between the piston rod head of second hydraulic jack and the telescopic boom of shrinking structure is provided with kidney slot, and this bearing pin places in the kidney slot; The cylinder body of second hydraulic jack is connected with the intermediate arm of shrinking structure; The cylinder body of first hydraulic jack is connected through bearing pin with the cylinder body of second hydraulic jack.
Press such scheme, the cylinder body of said first hydraulic jack is provided with the first cylinder body connecting base, and the cylinder body of second hydraulic jack is provided with the second cylinder body contiguous block, and the first cylinder body connecting base is connected through bearing pin with the second cylinder body contiguous block.
Press such scheme, the described first cylinder body connecting base is located on arbitrary position of cylinder body of first hydraulic jack; The position of the second cylinder body contiguous block is corresponding with the position of the first cylinder body connecting base.
Press such scheme, the described first cylinder body connecting base is located at the end and/or the middle part of the cylinder body of first hydraulic jack.
Press such scheme, the described second cylinder body contiguous block is provided with the kidney slot perpendicular to the second hydraulic jack axis, and bearing pin places in the kidney slot.
Press such scheme, the cylinder body of described first hydraulic jack is provided with the first cylinder body contiguous block, and the cylinder body of second hydraulic jack is provided with the second cylinder body connecting base, and the first cylinder body connecting base is connected through bearing pin with the second cylinder body connecting base; The second cylinder body connecting base is connected with the first cylinder body connecting base through bearing pin.
Press such scheme, the described first cylinder body contiguous block is located on arbitrary position of cylinder body of first hydraulic jack, and the position of the second cylinder body connecting base is corresponding with the position of the first cylinder body contiguous block.
Press such scheme, the described first cylinder body contiguous block is located at the end and/or the middle part of the cylinder body of first hydraulic jack.
Press such scheme, the described first cylinder body connecting base is provided with the kidney slot perpendicular to the first hydraulic jack axis, and bearing pin places in the kidney slot.
The beneficial effect of the utility model is: 1 simple in structure, use aspect.2, solved flexible stroke limiting, a complete machine little problem of support scope when the construction state that independent hydraulic oil cylinder driving shrinking structure brings; When having avoided two independent hydraulic oil cylinder driving, the problem of hydraulic pipe line complicated layout difficulty; The excessive influence of oil cylinder external diameter when having overcome a multi-stage oil cylinder driving to the structural strength layout; Also having overcome two oil cylinders forms the jam that rigidly connected oil cylinder group brings or moves dumb.3, simplify the structure greatly and hydraulic pipe line, promoted the intensity and the enabling capabilities of shrinking structure, layout is more rationally with succinct.4, when shrinking structure stretches out or withdraws; There is among a small circle unsteady relatively between two cylinder bodies, be not easy to take place jam, flexible flexibility and reliability; Avoided making the leakage of oil of oil cylinder piston rod bending because of the oil cylinder jam; Even the problem of damaging, promoted working life of oil cylinder, greatly reduce the rate of fault of oil cylinder group.
Description of drawings
Fig. 1 is the structural representation after the utility model embodiment 1 oil cylinder group is withdrawn shrinking structure;
Fig. 2 is the structural representation after the utility model embodiment 1 oil cylinder group is stretched out shrinking structure;
Fig. 3 is the structural representation after the utility model embodiment 2 oil cylinder group structure is withdrawn;
Fig. 4 is the structural representation after the utility model embodiment 3 oil cylinder group structure is withdrawn;
Fig. 5 is the structural representation after the utility model embodiment 4 oil cylinder group structure is withdrawn;
Fig. 6 is the linkage structure schematic representation of the second cylinder body contiguous block and the first cylinder body connecting base among Fig. 3;
Fig. 7 is the structural representation of the kidney slot on the first cylinder body connecting base among Fig. 1.
Wherein: 1, shrinking structure; 2, first hydraulic jack; 3, second hydraulic jack; 4,5,6,7,8, bearing pin; 11, fixed arm; 12, intermediate arm; 13, telescopic boom; 20, first cylinder body; 21, first piston bar; 22 first piston bar heads; 23, the rod chamber 32 of first hydraulic jack, the rod chamber of second hydraulic jack; 24, the rodless cavity of first hydraulic jack; 33, the rodless cavity of second hydraulic jack; 25, the first cylinder body connecting base; 26, the first cylinder body connecting base; 30, second cylinder body; 31, second piston rod; 34, the second cylinder body contiguous block; 35, the second cylinder body connecting base; 41,42, oil pipe; 43, kidney slot.
Embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.
Embodiment 1; Referring to Fig. 1, Fig. 2, Fig. 7, a kind of shrinking structure oil cylinder group comprises first hydraulic jack 2 and second hydraulic jack 3 of reversed arrangement in shrinking structure 1; First hydraulic jack 2 comprises first cylinder body 20 and first piston bar 21; First piston bar 21 outer ends are provided with first piston bar head 22, and the connecting plate on the fixed arm 11 of first piston bar head 22 and shrinking structure 1 is connected through bearing pin 7, and bearing pin 7 places in the kidney slot on the connecting plate; Second hydraulic jack 3 comprises second cylinder body 30 and second piston rod 31; Connecting plate on the telescopic boom 13 of second piston rod 31 and shrinking structure 1 is connected through bearing pin 8; Bearing pin 8 places in the kidney slot on the connecting plate, and second cylinder body 30 is connected with the intermediate arm 12 of shrinking structure 1.The rod chamber 23 of first hydraulic jack and the rod chamber of second hydraulic jack 32 are communicated with through oil pipe 41; The rodless cavity 24 of first hydraulic jack and the rodless cavity of second hydraulic jack 33 is communicated with through oil pipe 42, and promptly the rodless cavity of first hydraulic jack 2 and second hydraulic jack 3 communicates with rodless cavity, rod chamber communicates with rod chamber.Second hydraulic jack 3 links to each other with the intermediate arm 12 of shrinking structure 1 through bearing pin 4, adopts the bearing pin articulated manner to link to each other between the first hydraulic oil cylinder body 20 and the second hydraulic oil cylinder body 30, and two cylinder bodies join end to end; The rod chamber end of first cylinder body 20 is provided with the first cylinder body connecting base 25; First cylinder body connects block 25 and is provided with kidney slot 43; The afterbody of the rodless cavity end of first cylinder body 20 is provided with the first cylinder body connecting base 26; The afterbody that the rod chamber end of second cylinder body 30 is provided with the rodless cavity end of the second cylinder body contiguous block, 34, the second cylinder bodies 30 is provided with the second cylinder body connecting base, 35, the first cylinder body connecting bases 26 and the second cylinder body contiguous block 34 is hinged and connected through bearing pin 5; The first cylinder body connecting base 25 and the second cylinder body connecting base 35 are hinged and connected through bearing pin 6, and bearing pin 6 places in the kidney slot 43 of the first cylinder body connecting base 25; When pressure oil got into the rodless cavity 33 of rodless cavity 24 and second hydraulic jack of first hydraulic jack, the first piston bar 21 and second piston rod 31 stretched out, and the intermediate arm 12 that promotes shrinking structure 1 stretches out with telescopic boom 13; When pressure oil got into the rod chamber 32 of rod chamber 23 and second hydraulic jack of first hydraulic jack, the first piston bar 21 and second piston rod 31 were regained, and the intermediate arm 12 that drives shrinking structure 1 is regained with telescopic boom 13.
Working principle: among the embodiment 1; 30 of first cylinder body 20 and second cylinder bodies are hinged and connected through bearing pin 5 and 6 becomes an oil cylinder group; It is hinged through bearing pin 7 and fixed arm 11 that first piston bar 21 outer ends are provided with first piston bar head 22, and second piston rod 31 is hinged through bearing pin 8 and telescopic boom 13.Get into the rod chamber and the rodless cavity of first hydraulic jack 2 through first piston bar head 22 when hydraulic oil; Because the oil pipe 41, the oil pipe 42 connection effects that link to each other; Hydraulic oil gets into the rod chamber and the rodless cavity of second hydraulic jack 3 simultaneously; Because two cylinder body reversed arrangement, first while still alive stopper rod 21 stretch out with the opposite direction in second piston rod, 31 edges or withdraw; When the rodless cavity 33 of the rodless cavity 24 of first hydraulic jack and second hydraulic jack during through pressure oil, the first piston bar 21 and second piston rod 31 stretch out; When the rod chamber 23 of first hydraulic jack and the rod chamber 32 of second hydraulic jack during through pressure oil, first piston bar 21 and 31 withdrawals of second piston rod; Like this, promote the oil cylinder groups, under the effect of bearing pin 4, drive intermediate arm 12 and in fixed arm 11, stretch out or withdraw, and promotion telescopic boom 13 stretches out in intermediate arm 12 or withdraws through bearing pin 7.
Embodiment 2, referring to Fig. 3, Fig. 6, are with embodiment 1 difference: do not have kidney slot 43 on the first cylinder body connecting base 25, it directly is connected with the second cylinder body connecting base 35 through bearing pin 6; Kidney slot 43, the second cylinder body contiguous blocks 34 that the second cylinder body contiguous block 34 is provided with perpendicular to second cylinder body 30 are connected with the first cylinder body connecting base 26 through bearing pin 5, and bearing pin 5 places in the kidney slot 43.Adopt Spielpassung at bearing pin 6 places, adopting at bearing pin 5 places floats connects, and is that rotate in the center of circle with bearing pin 6, and bearing pin 5 is movable in the length range of kidney slot 43, thereby realizes the unsteady connection between the cylinder body in the oil cylinder group.Since the unsteady connection between oil cylinder group inner cylinder body, the jam when fully having avoided oil cylinder flexible, flexible more flexible, reliable and stable.
Embodiment 3; Referring to Fig. 4; Be with embodiment 1 difference: 30 of first cylinder body 20 and second cylinder bodies are hinged through bearing pin 5, and the second cylinder body contiguous block 34 on second cylinder body 30 is positioned at rod chamber 32 ends of second hydraulic jack, and the first cylinder body connecting base 26 on first cylinder body 20 is positioned at rodless cavity 24 ends of first hydraulic jack; And do not have kidney slot on the second cylinder body contiguous block 34, the second cylinder body contiguous block 34 is connected with the first cylinder body connecting base 26 through bearing pin 5.Only hinged between first cylinder body 20 and second cylinder body through bearing pin 5; The first cylinder body connecting base 26 of bearing pin 5 and first cylinder body, 20 rodless cavity ends and the rod chamber end of second cylinder body 30 are provided with the cooperation of the second cylinder body contiguous block 34 and adopt Spielpassung; Can rotate freely and float around bearing pin 5 between the oil cylinder group; Through stretching of oil cylinder group, it is flexible flexibly to drive shrinking structure.
Embodiment 4, and referring to Fig. 5, and embodiment 1 difference is: 30 of first cylinder body 20 and second cylinder bodies are only hinged through bearing pin 6.The first cylinder body connecting base 25 on first cylinder body 20 is positioned at rod chamber 23 ends of first hydraulic jack; The second cylinder body connecting base 35 on second cylinder body 30 is positioned at rodless cavity 33 ends of second hydraulic jack; The first cylinder body connecting base 25 is connected with the second cylinder body connecting base 35 through bearing pin 6; Do not establish kidney slot on the first cylinder body contiguous block, the second cylinder body connecting base 35 of bearing pin 6 and second cylinder body, 30 rodless cavity ends and the rod chamber end of first cylinder body 20 are provided with the cooperation of the first cylinder body connecting base 25 and adopt Spielpassung, can rotate freely and float around bearing pin 6 between the oil cylinder group; Through stretching of oil cylinder group, it is flexible flexibly to drive shrinking structure.
The first cylinder body contiguous block can be provided with the arbitrary position on first cylinder body, and the second cylinder body contiguous block also can be located at the arbitrary position on second cylinder body.The width of above-described kidney slot is greater than the diameter of bearing pin, and bearing pin floats in the length range of kidney slot; And kidney slot can be located at separately on the first cylinder body contiguous block, also can be located at separately on the second cylinder body contiguous block, also can all establish, and can also not establish.
The above; Only being the preferred embodiment of the utility model, is not that the utility model is done any pro forma restriction, and those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification; Equivalent variations or modification all drop in the protection domain of the utility model.

Claims (9)

1. shrinking structure oil cylinder group; First hydraulic jack and second hydraulic jack that comprise reversed arrangement; The rod chamber of the rod chamber of first hydraulic jack and second hydraulic jack is communicated with through oil pipe; The rodless cavity of the rodless cavity of first hydraulic jack and second hydraulic jack is communicated with through oil pipe; It is characterized in that: the piston rod head of first hydraulic jack is connected through bearing pin with the fixed arm of shrinking structure, and the joint between the piston rod head of first hydraulic jack and the fixed arm of shrinking structure is provided with kidney slot, and this bearing pin places in the kidney slot; The piston rod head of second hydraulic jack is connected through bearing pin with the telescopic boom of shrinking structure, and the joint between the piston rod head of second hydraulic jack and the telescopic boom of shrinking structure is provided with kidney slot, and this bearing pin places in the kidney slot; The cylinder body of second hydraulic jack is connected with the intermediate arm of shrinking structure; The cylinder body of first hydraulic jack is connected through bearing pin with the cylinder body of second hydraulic jack.
2. shrinking structure oil cylinder group as claimed in claim 1; It is characterized in that: the cylinder body of said first hydraulic jack is provided with the first cylinder body connecting base; The cylinder body of second hydraulic jack is provided with the second cylinder body contiguous block, and the first cylinder body connecting base is connected through bearing pin with the second cylinder body contiguous block.
3. shrinking structure oil cylinder group as claimed in claim 2 is characterized in that: the described first cylinder body connecting base is located on arbitrary position of cylinder body of first hydraulic jack; The position of the second cylinder body contiguous block is corresponding with the position of the first cylinder body connecting base.
4. shrinking structure oil cylinder group as claimed in claim 3 is characterized in that: the described first cylinder body connecting base is located at the end and/or the middle part of the cylinder body of first hydraulic jack.
5. like claim 2 or 3 described shrinking structure oil cylinder groups, it is characterized in that: the described second cylinder body contiguous block is provided with the kidney slot perpendicular to the second hydraulic jack axis, and bearing pin places in the kidney slot.
6. according to claim 1 or claim 2 shrinking structure oil cylinder group; It is characterized in that: the cylinder body of described first hydraulic jack is provided with the first cylinder body contiguous block; The cylinder body of second hydraulic jack is provided with the second cylinder body connecting base; The first cylinder body contiguous block is connected through bearing pin with the second cylinder body connecting base, and the second cylinder body connecting base is connected with the first cylinder body connecting base through bearing pin.
7. shrinking structure oil cylinder group as claimed in claim 6 is characterized in that: the described first cylinder body contiguous block is located on arbitrary position of cylinder body of first hydraulic jack, and the position of the second cylinder body connecting base is corresponding with the position of the first cylinder body contiguous block.
8. shrinking structure oil cylinder group as claimed in claim 7 is characterized in that: the described first cylinder body contiguous block is located at the end and/or the middle part of the cylinder body of first hydraulic jack.
9. shrinking structure oil cylinder group as claimed in claim 4 is characterized in that: the described first cylinder body connecting base is provided with the kidney slot perpendicular to the first hydraulic jack axis, and bearing pin places in the kidney slot.
CN2011202258081U 2011-06-29 2011-06-29 Telescopic structure oil cylinder group Expired - Fee Related CN202176570U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202258081U CN202176570U (en) 2011-06-29 2011-06-29 Telescopic structure oil cylinder group

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Application Number Priority Date Filing Date Title
CN2011202258081U CN202176570U (en) 2011-06-29 2011-06-29 Telescopic structure oil cylinder group

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CN202176570U true CN202176570U (en) 2012-03-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104176017A (en) * 2014-08-19 2014-12-03 安徽星马专用汽车有限公司 Combined oil cylinder, front supporting leg subassembly and concrete pump truck
CN108724247A (en) * 2018-07-04 2018-11-02 湖北三江航天涂装设备工程有限公司 High-precision telescopic arm for expanding robot operating range and its control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104176017A (en) * 2014-08-19 2014-12-03 安徽星马专用汽车有限公司 Combined oil cylinder, front supporting leg subassembly and concrete pump truck
CN108724247A (en) * 2018-07-04 2018-11-02 湖北三江航天涂装设备工程有限公司 High-precision telescopic arm for expanding robot operating range and its control method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120328

Termination date: 20140629

EXPY Termination of patent right or utility model