CN201155501Y - Barrel combination type hydraulic cylinder - Google Patents
Barrel combination type hydraulic cylinder Download PDFInfo
- Publication number
- CN201155501Y CN201155501Y CNU200820065427XU CN200820065427U CN201155501Y CN 201155501 Y CN201155501 Y CN 201155501Y CN U200820065427X U CNU200820065427X U CN U200820065427XU CN 200820065427 U CN200820065427 U CN 200820065427U CN 201155501 Y CN201155501 Y CN 201155501Y
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- piston
- back segment
- leading portion
- groove
- anteposition
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Abstract
The utility model relates to an improve structure of a combined hydraulic cylinder. The combined hydraulic cylinder adopts multiple sections of cylinder barrels which are meshed and fixed on a conical surface. The fasteners used for connection adopt hydraulic nuts; the sealing structure of the piston adopts the technology of double crossed seal. The utility model has the following advantages: at least two sections of cylinder barrels are combined together with the length several times longer than that of the ordinary single cylinder barrel, and any length reachable by the piston rod can be matched, thereby the hydraulic cylinder achieves a long stroke and ideal value of constant output torque; the utility model is easy to be installed, adjusted, repaired and maintained, and is especially suitable for being used in narrow or special working places, wherein, the installation, placement and disassembly are very difficult; the cost is greatly reduced. Damage or wear and tear of the inner holes of the hydraulic cylinder is inevitable, and through adopting such structure, only some sections of the cylinder barrels are repaired or replaced rather than the full length of the cylinder barrels.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, especially relates to a kind of structure improvement to the cylindrical shell combined type hydraulic cylinder.
Background technique
Oil hydraulic cylinder is combined by cylinder barrel, piston rod assembly.What can satisfy overlength stroke needs in its extraordinary oil cylinder is the multistage hydraulic cylinder that is made up by the multi-level piston bar, but the ouput force of multistage hydraulic cylinder can not be constant, but determining final ouput force by the active area of the piston rod of final work, the progression of use is many more and start-stop ouput force difference that realize is big more.Therefore under the condition of the working stroke overlength that needs oil hydraulic cylinder two relative contradictions that ouput force must be constant again, existing oil hydraulic cylinder application technology is never special to be broken through.
Summary of the invention
The utility model mainly is that the ouput force of solution existing in prior technology multistage hydraulic cylinder can not be constant, but determine final ouput force by the active area of the piston rod of final work, the many more and technical problem of the big more grade of start-stop ouput force difference that realizes of the progression of use; Provide a kind of length to be several times as much as the length of conventional single cylinder barrel by at least two joint cylinder combination one, so long as the length that piston rod can be realized can with its coupling, thereby reach the cylindrical shell combined type hydraulic cylinder of the ideal value of oil hydraulic cylinder overlength stroke action and constant output power.
The utility model also have a purpose is solve that the existing multistage hydraulic cylinder of existing in prior technology is installed inconvenience, adjusted, dismounting and maintenance are all more loaded down with trivial details etc., and are not suitable for the technical problem in narrow or particular job place etc.; Provide a kind of and be convenient to install, adjust, dismantle and maintenance, particularly put in installation, narrow or particular job place that dismounting is difficult uses the utility model more to embody the cylindrical shell combined type hydraulic cylinder of its advantage.
It is the technical problem that solves endoporus damage that the existing in prior technology oil hydraulic cylinder inevitably can occur at work or wearing and tearing etc. that the utility model has a purpose again; Provide a kind of and can directly reduce user cost, can only repair or upgrade and do not need to change the cylindrical shell combined type hydraulic cylinder of total length cylinder barrel certain sections cylinder barrel.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
The cylindrical shell combined type hydraulic cylinder, comprise cylinder barrel and be arranged in the cylinder barrel and the piston rod that can move back and forth, piston rod is provided with leading portion piston and back segment piston, it is characterized in that, described cylinder barrel end also is arranged with the combination cylinder barrel, the combination cylinder barrel boss that the cylinder barrel end is provided with the cylinder barrel boss and is arranged on periphery, combination cylinder barrel end and fits with the cylinder barrel boss, the cylinder barrel boss is fixed by the boss fixing device with combination cylinder barrel boss.
At above-mentioned cylindrical shell combined type hydraulic cylinder, described inner wall of cylinder end is along being circumferentially with draw-in groove, and the end of combination cylinder barrel is positioned at draw-in groove, also is provided with the intermediate support cover between described leading portion piston and the back segment piston.
At above-mentioned cylindrical shell combined type hydraulic cylinder, cylinder barrel end inwall is provided with the transition chute with combination cylinder barrel end inwall joining place, described leading portion piston and back segment piston periphery are respectively equipped with leading portion brace groove and back segment brace groove, leading portion anteposition Sealing, behind the leading portion position Sealing and be arranged on leading portion anteposition Sealing and leading portion after the leading portion supporting sleeve of position between the Sealing be located in the leading portion brace groove back segment anteposition Sealing, behind the back segment position Sealing and be arranged on back segment anteposition Sealing and back segment after the back segment supporting sleeve of position between the Sealing be located in the back segment brace groove.
At above-mentioned cylindrical shell combined type hydraulic cylinder, a position piston constitutes behind leading portion anteposition piston that described leading portion piston is reclined mutually by the bottom surface and the front end, and the L type groove of a piston periphery constitutes described leading portion brace groove behind the peripheral and front end of leading portion anteposition piston by being arranged on.
At above-mentioned cylindrical shell combined type hydraulic cylinder, a position piston constitutes behind back segment anteposition piston that described back segment piston is reclined mutually by the bottom surface and the back segment, and the L type groove of a piston periphery constitutes described back segment brace groove behind the peripheral and back segment of back segment anteposition piston by being arranged on.
As another kind of scheme, at above-mentioned cylindrical shell combined type hydraulic cylinder, a position piston constitutes behind leading portion anteposition piston that described leading portion piston is reclined mutually by the bottom surface and the front end, also be provided with leading portion supporting sleeve groove in the above-mentioned leading portion brace groove, the trapezoidal type groove of a piston periphery constitutes leading portion supporting sleeve groove in leading portion brace groove and the leading portion brace groove behind the peripheral and front end of leading portion anteposition piston by being arranged on, and described leading portion supporting sleeve is positioned at leading portion supporting sleeve groove.
As another kind of scheme, at above-mentioned cylindrical shell combined type hydraulic cylinder, a position piston constitutes behind back segment anteposition piston that described back segment piston is reclined mutually by the bottom surface and the rear end, also be provided with back segment supporting sleeve groove in the above-mentioned back segment brace groove, the trapezoidal type groove of a piston periphery constitutes back segment supporting sleeve groove in back segment brace groove and the back segment brace groove behind the peripheral and rear end of back segment anteposition piston by being arranged on, and described back segment supporting sleeve is positioned at back segment supporting sleeve groove.
At above-mentioned cylindrical shell combined type hydraulic cylinder, the cross section of described transition chute is that drift angle is 100 °～170 ° a isosceles triangle.
As another kind of scheme, at above-mentioned cylindrical shell combined type hydraulic cylinder, described transition chute cross section is semicircle.
At above-mentioned cylindrical shell combined type hydraulic cylinder, described boss fixing device is a hydraulic nut.
Therefore, the utlity model has following advantage: 1. the length that is several times as much as conventional single cylinder barrel at least by the length of two joint cylinder combination one, so long as the length that piston rod can be realized can with its coupling, thereby reach the ideal value of oil hydraulic cylinder overlength stroke action and constant output power; 2. be convenient to install, adjust, dismantle and maintenance, particularly put in installation, use in narrow or particular job place that dismounting is difficult; 3. can directly reduce user cost, endoporus damage or wearing and tearing that oil hydraulic cylinder inevitably can occur at work, this structural type can only be repaired or upgrade certain sections cylinder barrel does not need to change the total length cylinder barrel; 4. the stability of work is high, and Security is good, can not be subjected to vibration influence, and wearing and tearing are few, and operating noise is little; 5. reasonable in design, ingenious.
Description of drawings
Fig. 1 is a kind of sectional structure schematic representation of the present utility model;
Fig. 2 is the local enlarged diagram at the A place of Fig. 1;
Fig. 3 is the local enlarged diagram at the B place of Fig. 1;
Fig. 4 is the local enlarged diagram at the C place of Fig. 1;
Fig. 5 is the local enlarged diagram at the D place of Fig. 1.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Among the figure, cylinder barrel 1, piston rod 2, leading portion piston 3, leading portion anteposition piston 301, position piston 302 behind the front end, back segment piston 4, back segment anteposition piston 401, position piston 402 behind the back segment, combination cylinder barrel 5, cylinder barrel boss 6, combination cylinder barrel boss 7, boss fixing device 8, transition chute 9, leading portion brace groove 10, leading portion supporting sleeve groove 101, back segment brace groove 11, back segment supporting sleeve groove 111, leading portion anteposition Sealing 12, position Sealing 13 behind the leading portion, leading portion supporting sleeve 14, back segment anteposition Sealing 15, position Sealing 16 behind the back segment, back segment supporting sleeve 17, draw-in groove 18, intermediate support cover 19.
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the cylindrical shell combined type hydraulic cylinder, comprise cylinder barrel 1 and be arranged in the cylinder barrel 1 and the piston rod 2 that can move back and forth that piston rod 2 is provided with leading portion piston 3 and back segment piston 4, also be provided with intermediate support cover 19 between leading portion piston 3 and the back segment piston 4.
A position piston 302 constitutes behind leading portion anteposition piston 301 that leading portion piston 3 is reclined mutually by the bottom surface and the front end, leading portion piston 3 peripheries are provided with leading portion brace groove 10, the L type groove of piston 302 peripheries, position constitutes this leading portion brace groove 10 behind the peripheral and front end of leading portion anteposition piston 301 by being arranged on, behind leading portion anteposition Sealing 12, the leading portion position Sealing 13 and be arranged on leading portion anteposition Sealing 12 and leading portion after leading portion supporting sleeve 14 between the Sealing 13 be located in the leading portion brace groove 10; A position piston 402 constitutes behind back segment anteposition piston 401 that back segment piston 4 is reclined mutually by the bottom surface and the back segment, back segment piston 4 peripheries are provided with back segment brace groove 11, the L type groove of piston 402 peripheries, position constitutes this back segment brace groove 11 behind the peripheral and back segment of back segment anteposition piston 401 by being arranged on, behind back segment anteposition Sealing 15, the back segment position Sealing 16 and be arranged on back segment anteposition Sealing 15 and back segment after back segment supporting sleeve 17 between the Sealing 16 be located in the back segment brace groove 11.
The draw-in groove 18 of inner wall of cylinder end can be made the circular cone seam hole slot that is coaxial with cylinder barrel effect endoporus, can not along whole inner wall of cylinder end, it can be part, the end of combination cylinder barrel 5 is and the coaxial circular cone post of cylinder barrel 1 effect endoporus, tapering is 1: 12, cylinder barrel 1 awl post and taper hole negative and positive are closed up, engagement is gone and is cooperated into high-precision location, two cylinder barrels after closing up adopt the connection screw rod of circumference five equilibrium on the fastening two cylinder barrel boss of hydraulic nut, because the negative and positive tapering that the equal pressure of hydraulic nut causes engagement accurately and combination closely, the more piece cylinder barrel is unified into a whole oil hydraulic cylinder cylinder barrel that sets total length by ideal value, two cylinder barrel boss not only are anastomosis, the integral body of more piece combination are played the effect of raising cylinder barrel stiffness and anti-crawl agentdefiection degree.
The application of hydraulic nut is in order to make up the reliability of connection, uses hydraulic nut can direct disposable elimination to connect the axial clearance that extension that screw rod material itself exists is reflected in screw rod, reaches perfect fastening and anti-loosing effect; Hydraulic nut is best suited for installation, and the place that dismounting is inconvenient is especially in narrow narrow zone or the oil hydraulic cylinder Vertical Combination is installed, dismounting more embodies convenient, fast, reliable advantage.
The structural feature of more piece cylinder combination formula oil hydraulic cylinder requires the piston seal technology of necessary employing science; Shown in the structural drawing: the cylinder barrel engagement place of composite structure is provided with 170 ° empty more diameter section, piston assembly is made up of leading portion and back segment, two sections centres are equipped with the intermediate support of doing movingly with internal diameter of cylinder and are overlapped 19, leading portion and back segment piston are equipped with 2 Sealings of effect in the same way separately, it is position Sealing 13 behind leading portion anteposition Sealing 12 and the leading portion, and position Sealing 16 behind back segment anteposition Sealing 15 and the back segment, and use leading portion supporting sleeve 14 and the back segment supporting sleeve 17 difference fixing seals positions of overlapping 19 same outer diameter as with intermediate support.
During work, the motion of piston and bar: hydraulic oil enters the oil hydraulic cylinder rodless cavity, piston assembly contains bar and moves to the rod chamber direction, not sealing when the back segment anteposition Sealing 15 of back segment anteposition piston 401 is got over dead band by cylinder barrel, is that a position Sealing 16 plays a role behind the back segment of position piston 402 behind the back segment; After hydraulic oil enters rod chamber, piston assembly contains bar moving direction and moves to rodless cavity side, play a role by the anteposition sealing, whenever get over dead band by one section and just develop once still the hydraulic transmission that is used for of alternately two sealings of its leading portion for alternately sealing, but just recover sealing state after position piston 302 is crossed dead band behind present segment anteposition piston 301 and the leading portion, with after position sealing lose its seal action gradually during by dead band more, thereby the secondary seal technology is able to perfect performance in this structure.Three supporting sleeves in the piston assembly have been supported the stability of piston motion simultaneously; Dead band has also been replenished the Lubricants of the hydraulic oil of abundance in service as the piston assembly motion to secondary seal in alternation procedure more.
Present embodiment is not only applicable to the combination of two joint cylinder barrels, stands good for the combination of more piece cylinder barrel.
Embodiment 2:
A position piston 302 constitutes behind leading portion anteposition piston 301 that leading portion piston 3 in the present embodiment is reclined mutually by the bottom surface and the front end, also be provided with leading portion supporting sleeve groove 101 in the above-mentioned leading portion brace groove 10, the trapezoidal type groove of piston 302 periphery constitutes leading portion supporting sleeve groove 101 in leading portion brace groove 10 and the leading portion brace groove behind the peripheral and front end of leading portion anteposition piston 301 by being arranged on, described leading portion supporting sleeve 14 is positioned at leading portion supporting sleeve groove 101, and the height of leading portion supporting sleeve 14 is greater than the degree of depth of leading portion supporting sleeve groove 101.
A position piston 402 constitutes behind back segment anteposition piston 401 that back segment piston 4 is reclined mutually by the bottom surface and the rear end, also be provided with back segment supporting sleeve groove 111 in the above-mentioned back segment brace groove 11, the trapezoidal type groove of piston 402 periphery constitutes back segment supporting sleeve groove 111 in back segment brace groove 11 and the back segment brace groove 11 behind the peripheral and rear end of back segment anteposition piston 401 by being arranged on, described back segment supporting sleeve 17 is positioned at back segment supporting sleeve groove 111, and the height of back segment supporting sleeve 17 is greater than the degree of depth of back segment supporting sleeve groove 111.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used cylinder barrel 1 morely, piston rod 2, leading portion piston 3, leading portion anteposition piston 301, position piston 302 behind the front end, back segment piston 4, back segment anteposition piston 401, position piston 402 behind the back segment, combination cylinder barrel 5, cylinder barrel boss 6, combination cylinder barrel boss 7, boss fixing device 8, transition chute 9, leading portion brace groove 10, leading portion supporting sleeve groove 101, back segment brace groove 11, back segment supporting sleeve groove 111, leading portion anteposition Sealing 12, position Sealing 13 behind the leading portion, leading portion supporting sleeve 14, back segment anteposition Sealing 15, position Sealing 16 behind the back segment, back segment supporting sleeve 17, draw-in groove 18, intermediate support is overlapped 19 terms such as grade, but does not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (10)
1. cylindrical shell combined type hydraulic cylinder, comprise cylinder barrel (1) and be arranged in the cylinder barrel (1) and the piston rod (2) that can move back and forth, piston rod (2) is provided with leading portion piston (3) and back segment piston (4), it is characterized in that, described cylinder barrel (1) end also is arranged with combination cylinder barrel (5), the combination cylinder barrel boss (7) that cylinder barrel (1) end is provided with cylinder barrel boss (6) and is arranged on periphery, combination cylinder barrel (5) end and fits with cylinder barrel boss (6), cylinder barrel boss (6) is fixing by boss fixing device (8) with combination cylinder barrel boss (7).
2. cylindrical shell combined type hydraulic cylinder according to claim 1, it is characterized in that, described inner wall of cylinder end is along being circumferentially with draw-in groove (18), the end of combination cylinder barrel (5) is positioned at draw-in groove (18), also is provided with intermediate support cover (19) between described leading portion piston (3) and the back segment piston (4).
3. cylindrical shell combined type hydraulic cylinder according to claim 1, it is characterized in that, cylinder barrel end inwall is provided with transition chute (9) with combination cylinder barrel end inwall joining place, described leading portion piston (3) and back segment piston (4) periphery are respectively equipped with leading portion brace groove (10) and back segment brace groove (11), leading portion anteposition Sealing (12), behind the leading portion position Sealing (13) and be arranged on leading portion anteposition Sealing (12) and leading portion after leading portion supporting sleeve (14) between the Sealing (13) be located in the leading portion brace groove (10) back segment anteposition Sealing (15), behind the back segment position Sealing (16) and be arranged on back segment anteposition Sealing (15) and back segment after back segment supporting sleeve (17) between the Sealing (16) be located in the back segment brace groove (11).
4. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2, it is characterized in that, a position piston (302) constitutes behind leading portion anteposition piston (301) that described leading portion piston (3) is reclined mutually by the bottom surface and the front end, and described leading portion brace groove (10) is by being arranged on the peripheral L type groove formation of position piston (302) behind the peripheral and front end of leading portion anteposition piston (301).
5. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2, it is characterized in that, a position piston (402) constitutes behind back segment anteposition piston (401) that described back segment piston (4) is reclined mutually by the bottom surface and the back segment, and described back segment brace groove (11) is by being arranged on the peripheral L type groove formation of position piston (402) behind the peripheral and back segment of back segment anteposition piston (401).
6. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2, it is characterized in that, a position piston (302) constitutes behind leading portion anteposition piston (301) that described leading portion piston (3) is reclined mutually by the bottom surface and the front end, also be provided with leading portion supporting sleeve groove (101) in the above-mentioned leading portion brace groove (10), leading portion supporting sleeve groove (101) in leading portion brace groove (10) and the leading portion brace groove (10) is made of the peripheral trapezoidal type groove of position piston (302) after being arranged on leading portion anteposition piston (301) periphery and front end, and described leading portion supporting sleeve (14) is positioned at leading portion supporting sleeve groove (101).
7. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2, it is characterized in that, a position piston (402) constitutes behind back segment anteposition piston (401) that described back segment piston (4) is reclined mutually by the bottom surface and the rear end, also be provided with back segment supporting sleeve groove (111) in the above-mentioned back segment brace groove (11), back segment supporting sleeve groove (111) in back segment brace groove (11) and the back segment brace groove (11) is made of the peripheral trapezoidal type groove of position piston (402) after being arranged on back segment anteposition piston (401) periphery and rear end, and described back segment supporting sleeve (17) is positioned at back segment supporting sleeve groove (111).
8. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2 is characterized in that, the cross section of described transition chute (9) is that drift angle is 100 °～170 ° a isosceles triangle.
9. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2 is characterized in that, the cross section of described transition chute (9) is semicircle.
10. cylindrical shell combined type hydraulic cylinder according to claim 1 and 2 is characterized in that, described boss fixing device (8) is a hydraulic nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820065427XU CN201155501Y (en) | 2008-01-23 | 2008-01-23 | Barrel combination type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820065427XU CN201155501Y (en) | 2008-01-23 | 2008-01-23 | Barrel combination type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155501Y true CN201155501Y (en) | 2008-11-26 |
Family
ID=40103284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820065427XU Expired - Fee Related CN201155501Y (en) | 2008-01-23 | 2008-01-23 | Barrel combination type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155501Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291684A (en) * | 2012-03-01 | 2013-09-11 | 异型弹簧有限公司 | Gas cylinder actuator with overtravel safety device |
| CZ304721B6 (en) * | 2011-12-29 | 2014-09-10 | ÄŚVUT v Praze, Fakulta strojnĂ | Pressure cylinder |
| CN106812754A (en) * | 2017-03-20 | 2017-06-09 | 姜永达 | Long stroke hydraulic cylinder |
| CN108661985A (en) * | 2018-05-16 | 2018-10-16 | 芜湖市艾德森自动化设备有限公司 | A kind of hydraulic cylinder composite piston structure |
-
2008
- 2008-01-23 CN CNU200820065427XU patent/CN201155501Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ304721B6 (en) * | 2011-12-29 | 2014-09-10 | ÄŚVUT v Praze, Fakulta strojnĂ | Pressure cylinder |
| CN103291684A (en) * | 2012-03-01 | 2013-09-11 | 异型弹簧有限公司 | Gas cylinder actuator with overtravel safety device |
| US9291265B2 (en) | 2012-03-01 | 2016-03-22 | Special Springs S.R.L. | Gas cylinder actuator with overtravel safety device |
| CN103291684B (en) * | 2012-03-01 | 2017-03-01 | 异型弹簧有限公司 | There are the gas cylinder actuators of overtravel safety equipment |
| US9726287B2 (en) | 2012-03-01 | 2017-08-08 | Special Springs S.R.L. | Gas cylinder actuator with overtravel safety device |
| US9874281B2 (en) | 2012-03-01 | 2018-01-23 | Special Springs S.R.L. | Gas cylinder actuator with overtravel safety device |
| CN106812754A (en) * | 2017-03-20 | 2017-06-09 | 姜永达 | Long stroke hydraulic cylinder |
| CN108661985A (en) * | 2018-05-16 | 2018-10-16 | 芜湖市艾德森自动化设备有限公司 | A kind of hydraulic cylinder composite piston structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20081126 Termination date: 20150123 |
|
| EXPY | Termination of patent right or utility model |