CN200989342Y - Cylinder set for telescopic mechanism use - Google Patents
Cylinder set for telescopic mechanism use Download PDFInfo
- Publication number
- CN200989342Y CN200989342Y CN 200620053044 CN200620053044U CN200989342Y CN 200989342 Y CN200989342 Y CN 200989342Y CN 200620053044 CN200620053044 CN 200620053044 CN 200620053044 U CN200620053044 U CN 200620053044U CN 200989342 Y CN200989342 Y CN 200989342Y
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- cylinder body
- rodless cavity
- oil
- rod chamber
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Abstract
The utility model discloses a compact-structure hydraulic cylinder group used for the telescoping mechanism that solves the difficult problem of hydraulic pipeline layout and enhances the reliability for the whole machine. The hydraulic cylinder group used for the telescoping mechanism consists of a first hydraulic cylinder body and a second hydraulic cylinder body positioned in the telescoping mechanism. The first hydraulic cylinder body is inside provided with a first piston rod and the second hydraulic cylinder body is inside with a second piston rod. One side of the piston rod is positioned in the first piston rod and the other side is provided with a piston rod head. The cavity without the piston rod and the cavity with the piston rod in the first hydraulic cylinder body are respectively communicated with the cavity without the piston rod and the cavity with the piston rod in the second hydraulic cylinder body. The telescoping mechanism is provided with a moveable telescoping arm, a medium arm and a fixing body. The tails of the first hydraulic cylinder and the second hydraulic cylinder are respectively connected with the medium arm and both hydraulic cylinders are reversely arranged.
Description
Technical field
But the utility model relates to the drive unit of running type work mechanism extending means, relates in particular to extending means oil cylinder group, especially for the oil cylinder group of the multistage supporting leg expansion device of concrete mixer.
Background technique
At present, but in the running type work mechanism, often use extending means, stop to travel and when entering the construction state, control the position of supporting leg exactly with the multi-stage expansion arm such as concrete mixer, so that whole work mechanism is supported steadily.The flexible drive form of multi-stage expansion arm has multiple, and wherein modal is several modes that adopt hydraulic oil cylinder driving.Mode one adopts an independent hydraulic oil cylinder driving; Mode two adopts two independent oil cylinders, and each drives the one-level telescopic boom, and hydraulic fluid port is in parallel to be inserted; Mode three adopts a multi-stage oil cylinder to drive.The defective of method one is, the extending means collapsing length is short, and support strength is not enough; The defective of method two is, need to give respectively two independent oil cylinders to connect oil pipe, and wherein have at least the oil pipe of an oil cylinder to move back and forth together along with movable arm, make between oil pipe and telescopic boom and friction to take place and cause oil pipe breakage, this problem to make hydraulic pipe line arrange very difficulty; The defective of method three is, when adopting multi-stage oil cylinder to drive, the oil cylinder external diameter is excessive, and the flexible stroke of each grade oil cylinder is inconsistent, is subjected to the restriction of telescopic boom size, influence the telescopic boom overall structure, and the layout adjustment is difficulty very, and hydraulic pipe line is arranged very complexity; The driving force that promotes telescopic boom is simultaneously provided by oil cylinder minimum in the multi-stage oil cylinder, and driving force is not enough, when unusual jam occurring, can't release telescopic boom, if improve driving force by continuing to increase system pressure, then can have influence on the Security of hydraulic pipe line.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and the extending means oil cylinder group of compact structure, solution hydraulic pipe line arrangement difficulty, raising whole aircraft reliability is provided.
Extending means of the present utility model oil cylinder group, comprise first cylinder body and second cylinder body that are installed in the extending means, be provided with the first piston bar in first cylinder body, be provided with second piston rod in second cylinder body, first piston bar one end is located in the first piston bar, the other end is equiped with piston rod head, the rod chamber of first cylinder body and rodless cavity are communicated with the rod chamber and the rodless cavity of second cylinder body respectively, extending means has the movable telescopic arm, intermediate arm, fixed body, the afterbody of the afterbody of described first cylinder body and second cylinder body is connected with intermediate arm respectively, two cylinder body reversed arrangement.
The afterbody of described first cylinder body is provided with the first cylinder body contiguous block, second cylinder body is provided with the second cylinder body connecting base, the afterbody of second cylinder body is provided with the second cylinder body contiguous block, the first cylinder body contiguous block is provided with the attachment hole that cooperates with intermediate arm, the second cylinder body contiguous block is provided with the attachment hole that cooperates with intermediate arm, piston rod head is provided with the attachment hole that cooperates with fixed body, and second piston rod is provided with the attachment hole that cooperates with the movable telescopic arm.
Be provided with one section axial distance between the direction that the tail end of described first cylinder body stretches out along second piston rod and the second cylinder body protecgulum.
Described first cylinder body is provided with that the rod chamber that communicates with rod chamber is communicated with oily joint and the rodless cavity that communicates with rodless cavity is communicated with oily joint, described second cylinder body is provided with that the rod chamber that communicates with rod chamber is communicated with oily joint and the rodless cavity that communicates with rodless cavity is communicated with oily joint, rod chamber is communicated with oily joint and links to each other by first oil pipe, and rodless cavity is communicated with oily joint and links to each other by second oil pipe.
Be provided with passage in the described first piston bar, passage is communicated with rod chamber by the piston rod hydraulic fluid port, piston rod head is provided with rodless cavity oil inlet and outlet, rod chamber oil inlet and outlet and oily passage, also be provided with the steel pipe that communicates with rodless cavity in the oil passage, the two end part of steel pipe are provided with first isolating ring and second isolating ring respectively, and first isolating ring is located in the oily passage, and are arranged between rodless cavity oil inlet and outlet and the rod chamber oil inlet and outlet, second isolating ring is located in the passage, is positioned at the end near rodless cavity.
Described first oil pipe and second oil pipe are flexible pipe.
Advantage of the present utility model is: solved the problem that collapsing length is not enough, support strength is not enough when adopting an independent oil cylinder; Influence the problem of integral layout when having avoided adopting multi-stage oil cylinder because of external diameter is excessive; Overcome the problem of hydraulic pipe line stringing difficulty when adopting two single oil cylinders to drive respectively, thereby simplified overall structure and hydraulic pipe line, increased the structural strength of telescopic boom integral body; Because the driving force stepless action of two oil cylinders has overcome the frequent appearance of jam phenomenon on telescopic boom; When two oil cylinder strokes of oil cylinder group are identical, can realize that the telescopic moving stroke of every joint movable telescopic arm equates, improved the bearing capacity of telescopic boom; Because the oil cylinder group is arranged in extending means inside, has simplified overall structure, layout is more reasonable, and outward appearance is more succinct; Simultaneously, because when telescopic boom stretches out or withdraws, do not relatively move between two cylinder bodies, only there is less relative swing, so can use flexible pipe to connect the oil circuit of two cylinder bodies, can overcome swing less between oil cylinder, and can guarantee that flexible pipe with between the extending means does not contact, do not produce friction, thereby improved the Security and the working life of complete machine.
Description of drawings
Fig. 1 is the structural representation after oil cylinder group of the present utility model is withdrawn extending means;
Fig. 2 is the structural representation after oil cylinder group of the present utility model is stretched out extending means;
Fig. 3 is the A-A cutaway view Amplified image of first cylinder body among Fig. 1.
Marginal data:
1, extending means 2, first cylinder body
3, second cylinder body 4, first piston bar
5, second piston rod 6, piston rod head
7, first oil pipe 8, second oil pipe
11, movable telescopic arm 12, intermediate arm
13, fixed body 21,31, rod chamber
22,32, rodless cavity 23, the first cylinder body contiguous block
33, the second cylinder body contiguous block 25,35, rod chamber are communicated with oily joint
26,36, rodless cavity is communicated with oily joint 38, the second cylinder body protecgulum
24,34,51,67 attachment holes 41, passage
42, piston rod hydraulic fluid port 61, rodless cavity oil inlet and outlet
62, rod chamber oil inlet and outlet 63, oily passage
64, steel pipe 65, first isolating ring
66, second isolating ring
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, extending means has movable telescopic arm 11, intermediate arm 12, fixed body 13, extending means of the present utility model comprises first cylinder body 2 and second cylinder body 3 that is installed on the extending means 1 with the oil cylinder group, be provided with first piston bar 4 in first cylinder body 2, second piston rod 5 that is provided with in second cylinder body 3, first piston bar 4 one ends are located in first cylinder body 2, the other end is equiped with piston rod head 6, the rod chamber 21 of first cylinder body 2 and rodless cavity 22 are communicated with the rod chamber 31 and the rodless cavity 32 of second cylinder body 3 respectively, the afterbody of the afterbody of described first cylinder body 2 and second cylinder body 3 is connected with intermediate arm 12 respectively, two cylinder body reversed arrangement; The afterbody that the afterbody of first cylinder body 2 is provided with the first cylinder body contiguous block, 23, the second cylinder bodies 3 is provided with the second cylinder body contiguous block 33; The first cylinder body contiguous block 23 is provided with the attachment hole 24 that cooperates with intermediate arm 12, the second cylinder body contiguous block 33 is provided with the attachment hole 34 that cooperates with intermediate arm 12, piston rod head 6 is provided with attachment hole 67, the second piston rods 5 that cooperate with fixed body 13 and is provided with the attachment hole 51 that cooperates with movable telescopic arm 11.First cylinder body 2 links to each other with intermediate arm 12 by the attachment hole 24 on the bearing pin and the first cylinder body contiguous block 23, and piston rod head 6 links to each other with fixed body 13 by bearing pin and attachment hole 67; Second cylinder body 3 links to each other with intermediate arm 12 by the attachment hole 34 on the bearing pin and the second cylinder body contiguous block 33, and second piston rod 5 links to each other with movable telescopic arm 11 by bearing pin and attachment hole 51.Be provided with one section axial distance e between the direction that the tail end of first cylinder body 2 stretches out along second piston rod 5 and the second cylinder body protecgulum 38, can set this apart from e according to the needs of extending means 1 flexible length, to adapt to different working condition requirements.First cylinder body 2 is provided with the rodless cavity connection joint 26 that the rod chamber that communicates with rod chamber 21 is communicated with joint 25 and communicates with rodless cavity 22; Second cylinder body 3 is provided with the rodless cavity connection joint 36 that the rod chamber that communicates with rod chamber 31 is communicated with joint 35 and communicates with rodless cavity 32; Rod chamber is communicated with joint 25,35 and links to each other by first oil pipe 7, and rodless cavity is communicated with joint 26,36 and links to each other by second oil pipe 8; First oil pipe 7 and second oil pipe 8 are flexible pipe; First piston bar 4 is provided with passage 41 and piston rod hydraulic fluid port 42, and passage 41 is communicated with by piston rod hydraulic fluid port 42 with rod chamber 21; Piston rod head 6 is provided with rodless cavity oil inlet and outlet 61, rod chamber oil inlet and outlet 62 and oily passage 63, also is provided with the steel pipe 64 that communicates with rodless cavity in the oily passage 63; The two end part of steel pipe 64 are provided with first isolating ring 65 and second isolating ring 66 respectively, first isolating ring 65 is located in the oily passage 63, and between rodless cavity oil inlet and outlet 61 and rod chamber oil inlet and outlet 62, second isolating ring 66 is located in the rod chamber passage 41, and is positioned at the end near rodless cavity 22; Rodless cavity oil inlet and outlet 61 communicates with rodless cavity 22 by first isolating ring 65, steel pipe 64 successively, and rod chamber oil inlet and outlet 62 communicates with rod chamber 21 by oily passage 63, passage 41, piston rod hydraulic fluid port 42 successively.
Working principle: as shown in Figure 1 and Figure 2, when system oil-way adds pressure oil for the rodless cavity 22,32 of two cylinder bodies by rodless cavity oil inlet and outlet 61, first piston bar 4, second piston rod 5 stretch out, first piston bar 4 relative fixed bodies 13 promote first cylinder body 2, stretch out thereby drive intermediate arm 12; Simultaneously, second piston rod 5 promotes movable telescopic arm 11 relative intermediate arms 12 and stretches out, and the fluid in the rod chamber 21,31 is got back to system oil-way by rod chamber oil inlet and outlet 62.When system oil-way feeds pressure oil for the rod chamber 21,31 of two cylinder bodies by rod chamber oil inlet and outlet 62, first piston bar 4,5 withdrawals of second piston rod, first piston bar 4 pullings first cylinder body 2, and drive intermediate arm 12 withdrawals; Simultaneously, 11 withdrawals of second piston rod, 5 pulling movable telescopic arms, the fluid in the rodless cavity 22 is got back to system oil-way by rodless cavity oil inlet and outlet 61.If two oil cylinder strokes of oil cylinder group are identical, can make movable telescopic arm 11, intermediate arm 12 keep the flexible stroke that equates.When the telescopic arms of extending means 1 is stretched out or is withdrawn, do not relatively move between two cylinder bodies 2,3, only there is less relative swing, so can use flexible pipe to connect the oil circuit of two cylinder bodies, can overcome 2,3 less swings of oil cylinder, and can guarantee that flexible pipe with between the extending means 1 does not contact, do not produce friction, thereby improved the Security and the working life of complete machine.
Claims (9)
1, a kind of extending means oil cylinder group, comprise first cylinder body (2) and second cylinder body (3) that are installed in the extending means (1), be provided with first piston bar (4) in first cylinder body (2), be provided with second piston rod (5) in second cylinder body (3), first piston bar (4) one ends are located in first cylinder body (2), the other end is equiped with piston rod head (6), the rod chamber (21) of first cylinder body (2) and rodless cavity (22) are communicated with the rod chamber (31) and the rodless cavity (32) of second cylinder body (3) respectively, extending means (1) is provided with movable telescopic arm (11), intermediate arm (12), fixed body (13), it is characterized in that the afterbody of described first cylinder body (2) and the afterbody of second cylinder body (3) are connected two cylinder body reversed arrangement respectively with intermediate arm (12).
2, according to the described extending means of claim 1 oil cylinder group, the afterbody that it is characterized in that described first cylinder body (2) is provided with the first cylinder body contiguous block (23), the afterbody of second cylinder body (3) is provided with the second cylinder body contiguous block (33), the first cylinder body contiguous block (23) is provided with the attachment hole (24) that cooperates with intermediate arm (12), the second cylinder body contiguous block (33) is provided with the attachment hole (34) that cooperates with intermediate arm (12), piston rod head (6) is provided with the attachment hole (67) that cooperates with fixed body (13), and second piston rod (5) is provided with the attachment hole (51) that cooperates with movable telescopic arm (11).
3,, be provided with one section axial distance (e) between the direction that the tail end that it is characterized in that described first cylinder body (2) stretches out along second piston rod (5) and the second cylinder body protecgulum (38) according to claim 1 or 2 described extending means oil cylinder groups.
4, according to claim 1 or 2 described extending means oil cylinder groups, it is characterized in that described first cylinder body (2) is provided with that the rod chamber that communicates with rod chamber (21) is communicated with oily joint (25) and the rodless cavity that communicates with rodless cavity (22) is communicated with oily joint (26), described second cylinder body (3) is provided with that the rod chamber that communicates with rod chamber (31) is communicated with oily joint (35) and the rodless cavity that communicates with rodless cavity (32) is communicated with oily joint (36), rod chamber is communicated with oily joint (25,35) link to each other by first oil pipe (7), rodless cavity is communicated with oily joint (26,36) link to each other by second oil pipe (8).
5, according to the described extending means of claim 3 oil cylinder group, it is characterized in that described first cylinder body (2) is provided with that the rod chamber that communicates with rod chamber (21) is communicated with oily joint (25) and the rodless cavity that communicates with rodless cavity (22) is communicated with oily joint (26), described second cylinder body (3) is provided with that the rod chamber that communicates with rod chamber (31) is communicated with oily joint (35) and the rodless cavity that communicates with rodless cavity (32) is communicated with oily joint (36), rod chamber is communicated with oily joint (25,35) link to each other by first oil pipe (7), rodless cavity is communicated with oily joint (26,36) link to each other by second oil pipe (8).
6, according to the described extending means of claim 4 oil cylinder group, it is characterized in that being provided with in the described first piston bar (4) passage (41), passage (41) is communicated with rod chamber (21) by piston rod hydraulic fluid port (42), described piston rod head (6) is provided with rodless cavity oil inlet and outlet (61), rod chamber oil inlet and outlet (62) and oily passage (63), also be provided with the steel pipe (64) that communicates with rodless cavity in the oil passage (63), the two end part of steel pipe (64) are provided with first isolating ring (65) and second isolating ring (66) respectively, first isolating ring (65) is located in the oily passage (63), and be arranged between rodless cavity oil inlet and outlet (61) and the rod chamber oil inlet and outlet (62), second isolating ring (66) is located in the passage (41), is positioned at the end near rodless cavity (22).
7, according to the described extending means of claim 5 oil cylinder group, it is characterized in that being provided with in the described first piston bar (4) passage (41), passage (41) is communicated with rod chamber (21) by piston rod hydraulic fluid port (42), described piston rod head (6) is provided with rodless cavity oil inlet and outlet (61), rod chamber oil inlet and outlet (62) and oily passage (63), also be provided with the steel pipe (64) that communicates with rodless cavity in the oil passage (63), the two end part of steel pipe (64) are provided with first isolating ring (65) and second isolating ring (66) respectively, first isolating ring (65) is located in the oily passage (63), and be arranged between rodless cavity oil inlet and outlet (61) and the rod chamber oil inlet and outlet (62), second isolating ring (66) is located in the passage (41), is positioned at the end near rodless cavity (22).
8,, it is characterized in that described first oil pipe (7) and second oil pipe (8) are flexible pipe according to the described extending means of claim 6 oil cylinder group.
9,, it is characterized in that described first oil pipe (7) and second oil pipe (8) are flexible pipe according to the described extending means of claim 7 oil cylinder group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053044 CN200989342Y (en) | 2006-12-07 | 2006-12-07 | Cylinder set for telescopic mechanism use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053044 CN200989342Y (en) | 2006-12-07 | 2006-12-07 | Cylinder set for telescopic mechanism use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989342Y true CN200989342Y (en) | 2007-12-12 |
Family
ID=38940379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620053044 Expired - Lifetime CN200989342Y (en) | 2006-12-07 | 2006-12-07 | Cylinder set for telescopic mechanism use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989342Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935841A (en) * | 2012-11-30 | 2013-02-20 | 上海汽车改装厂有限公司 | Telescopic supporting leg and application thereof |
| 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 |
| CN105465097A (en) * | 2015-12-23 | 2016-04-06 | 北汽福田汽车股份有限公司 | Engineering machine and multilevel telescopic mechanism thereof and piston assembly |
| CN106640140A (en) * | 2017-01-05 | 2017-05-10 | 陕西理工学院 | Variable-span concrete lining steel form trolley |
| CN107131176A (en) * | 2017-07-17 | 2017-09-05 | 江苏丰东热技术有限公司 | A kind of duplex oil cylinder and crossbeam closing device |
| WO2019015109A1 (en) * | 2017-07-17 | 2019-01-24 | 江苏丰东热技术有限公司 | Duplex oil cylinder, crossbeam opening and closing device, crossbeam opening and closing method, and crossbeam opening and closing control system |
-
2006
- 2006-12-07 CN CN 200620053044 patent/CN200989342Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102935841A (en) * | 2012-11-30 | 2013-02-20 | 上海汽车改装厂有限公司 | Telescopic supporting leg and application thereof |
| 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 |
| CN105465097A (en) * | 2015-12-23 | 2016-04-06 | 北汽福田汽车股份有限公司 | Engineering machine and multilevel telescopic mechanism thereof and piston assembly |
| CN106640140A (en) * | 2017-01-05 | 2017-05-10 | 陕西理工学院 | Variable-span concrete lining steel form trolley |
| CN107131176A (en) * | 2017-07-17 | 2017-09-05 | 江苏丰东热技术有限公司 | A kind of duplex oil cylinder and crossbeam closing device |
| WO2019015109A1 (en) * | 2017-07-17 | 2019-01-24 | 江苏丰东热技术有限公司 | Duplex oil cylinder, crossbeam opening and closing device, crossbeam opening and closing method, and crossbeam opening and closing control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130502 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 31 industrial city, Changsha Economic Development Zone, Hunan, Changsha Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |