CN204512054U - A kind of structure of hydraulic cab follow-up-type oil cylinder - Google Patents
A kind of structure of hydraulic cab follow-up-type oil cylinder Download PDFInfo
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- CN204512054U CN204512054U CN201420866779.0U CN201420866779U CN204512054U CN 204512054 U CN204512054 U CN 204512054U CN 201420866779 U CN201420866779 U CN 201420866779U CN 204512054 U CN204512054 U CN 204512054U
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- cylinder barrel
- oil
- piston rod
- inlet hole
- oil pipe
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Abstract
A kind of structure of hydraulic cab follow-up-type oil cylinder, undersetting (33) is provided with servo-actuated elongated slot (D), vehicle frame mount pin (E) is provided with in servo-actuated elongated slot (D), auxiliary oil pipe conducting is provided with between the top of lower cylinder barrel and the bottom of upper cylinder barrel, oil outlet (F) on intermediate support communicates with main oil pipe, filler opening (G) on intermediate support is provided with one-way valve, control piston (H) is provided with between filler opening (G) and oil outlet (F), one-way valve comprises the steel ball be arranged in valve seat orifice and the spring withstood on steel ball, steel ball is arranged at valve seat orifice and oil inlet hole intersection, and with oil inlet hole fitted seal, valve seat orifice communicates with oil pocket (B) with by (H) passage, an end face on control piston is provided with the top that can add oil inlet hole, top is positioned at oil inlet hole.The utility model acts on by two sections of piston rods when lifting works, and follow-up section stroke substantially invalid for existing oil cylinder is converted into available lifting working stroke, is convenient to car load layout.
Description
Technical field
The utility model belongs to auto manufacturing's technical field, relates to a kind of auto parts machinery, is the device of automobile cab turnover and falling, especially a kind of commercial-vehicle cab hydraulic pressure turn-over device.
Background technique
Current domestic commercial vehicle hydraulic cab overturning oil cylinder used is all adopt outer servo-actuated and interior servo-actuated two kinds of structures to reduce the impact of road shock to operator cabin of jolting, thus the travelling comfort of raising cabin interior.The large path of interior servo-actuated main employing cylinder barrel realizes piston rod and floats in the cylinder under driving states; Outer slave cylinder is then be designed to elongated slot by upper bracket or on upper bracket, install hinge structure additional be connected with cab bottom, avoids oil cylinder to the impact of cab bottom.Both differ from one another: interior follower structure is compact, but processing technology is more difficult, and the sealing system of upper hydraulic fluid port is in running order all the time, is very large test, often occurs oil leakage phenomenon to its sealability; The outer servo cylinder of current structure is all more satisfactory in processing technology and sealability, but the requirement in car load layout again on Existential Space, especially the required distance between installing cab bottom and vehicle frame, the words of door assembly with hinge and glass in right hand and left formula, when driving states, also there will be abnormal sound noise to a certain degree.
Along with commercial car more develops toward middle and high end, require that mechanism used is compacter more reliable, existing general oil cylinder cannot meet the demand of following client, and the hydraulic cab overturning oil cylinder therefore developing a kind of new structure designs with our the current required consideration of will having hoped for success meeting client in advance.
Model utility content
The utility model object be overcome above-mentioned hydraulic cab overturning oil cylinder exist deficiency, provide a kind of compact structure, be easy to car load layout and meet range demands hydraulic cab follow-up-type oil oil cylinder.
The technological scheme that the technical problem that the utility model solves adopts is:
A kind of structure of hydraulic cab follow-up-type oil cylinder, comprise cylinder barrel assembly 1, upper piston rod assembly 2, lower cylinder barrel assembly 3 and lower piston rod 4, the main oil pipe 12 that upper cylinder barrel assembly 1 comprises cylinder barrel 11 and is connected with upper cylinder barrel 11 top, upper cylinder barrel 11 upper end is provided with dust cover 5 and bush Assembly 6, the inner chamber top of upper cylinder barrel 11 is upper oil cavitie A, upper piston rod assembly 2 comprises the upper piston rod 23 be located in cylinder barrel 11, upper piston rod 23 upper end is stretched out dust cover 5 and is connected with upper bracket 21, upper bracket 21 endoporus is provided with joint shaft bearing 22, upper piston rod 23 has piston assembly 7, lower cylinder barrel assembly 3 comprises lower cylinder barrel 31, lower piston rod 4 is positioned at lower cylinder barrel 31, lower cylinder barrel 31 inner chamber of the top and the bottom of lower piston rod 4 forms middle oil pocket B and lower oil cavitie C respectively, intermediate support 14 is provided with between upper cylinder barrel 11 and lower cylinder barrel 31, intermediate support 14 is provided with filler opening G and oil outlet F, it is characterized in that lower cylinder barrel 31 has undersetting 33, undersetting 33 is provided with servo-actuated elongated slot D, vehicle frame mount pin E is provided with in servo-actuated elongated slot D, the diameter of lower piston rod 4 is greater than the diameter of upper piston rod 23, on lower cylinder barrel 31 inner chamber, wall portion is provided with Steel Cable Baffle Ring 8, auxiliary oil pipe conducting is provided with between the top of lower cylinder barrel 31 and the bottom of upper cylinder barrel 11, oil outlet F on intermediate support 14 communicates with main oil pipe 12, filler opening G on intermediate support 14 is provided with one-way valve 15, piston cavity is provided with between filler opening G and oil outlet F, control piston H is provided with in piston cavity, the outer wall of control piston H and the inner chamber of piston cavity are provided with seal ring, be provided with oil inlet hole 53 and valve seat orifice 54 successively, oil inlet hole 53 and valve seat orifice 54 communicate with filler opening G, the aperture of valve seat orifice 54 is greater than the aperture of oil inlet hole 53, one-way valve 15 comprises the steel ball 51 be arranged in valve seat orifice 54 and the spring 52 withstood on steel ball 51, steel ball 51 is arranged at valve seat orifice 54 and oil inlet hole 53 intersection, and with oil inlet hole 53 fitted seal, valve seat orifice 54 communicates with oil pocket B with by H passage, an end face on control piston 10 is provided with the top 101 that can add oil inlet hole 53, top 101 is positioned at oil inlet hole 53, the movement of control piston 10 can overcome spring force and back down steel ball 51.
During concrete use, by the outer follow-up action section design of oil cylinder on the undersetting of oil cylinder, undersetting is designed to elongated slot structure, installs on vehicle frame by the mount pin on vehicle frame; Lower piston rod installs in lower cylinder barrel assembly, forms sealing system by respective seals; Upper piston rod assembly is contained in cylinder barrel assembly, forms sealing system by respective seals; Upper and lower cylinder barrel assembly carries out connection and spacing by Steel Cable Baffle Ring and position-limitting pin; Be provided with Fen Qiang unidirectional self-lock mechanism and oil inlet and outlet in intermediate support, realize the lifting/decline fuel feeding of cylinder system, and the locking in neutral position; The diameter of lower piston rod is greater than upper piston rod diameter, thus realize: during lifting, lower piston rod first stretches out, and then push down the mount pin on vehicle frame, oil cylinder moves lifting on the whole, when lower piston rod to the end after, upper piston rod ejects, and continues quick lifting operator cabin; During decline, after upper piston rod first reclaims fast, the slightly slow return of lower piston rod.During driving, vehicle frame mount pin can the relative unrestricted motion along with operator cabin pitch in oil cylinder undersetting elongated slot, thus plays follow-up action.Follow-up section is combined the lifting stroke being converted into product by this structural formula servo cylinder, realizing, outside the servo-actuated reliably of product and basic lifting function, also achieving the compact of product, has been beneficial to the layout of oil cylinder and operator cabin.
During concrete enforcement, above-mentioned auxiliary oil pipe comprises auxiliary oil pipe I13 and auxiliary oil pipe II32, and auxiliary oil pipe I13 and auxiliary oil pipe II32 are connected with the bottom of upper cylinder barrel 11 and the top of lower cylinder barrel 31 respectively, connect between auxiliary oil pipe I13 and auxiliary oil pipe II32 with transit joint 9.
The beneficial effects of the utility model are: the processability that the outer slave cylinder of the utility model reservation tradition has is good, and the advantage such as sealing system part is reliable, outer phantom element is moved to mounting point under oil cylinder, act on by two sections of piston rods when lifting works, follow-up section stroke substantially invalid for existing oil cylinder is converted into available lifting working stroke, to realize the long action effect of short oil cylinder, be convenient to car load layout.
Embodiment
As shown in Figures 1 to 5, a kind of structure of hydraulic cab follow-up-type oil cylinder, comprise cylinder barrel assembly 1, upper piston rod assembly 2, lower cylinder barrel assembly 3 and lower piston rod 4, the main oil pipe 12 that upper cylinder barrel assembly 1 comprises cylinder barrel 11 and is connected with upper cylinder barrel 11 top, upper cylinder barrel 11 upper end is provided with dust cover 5 and bush Assembly 6, the inner chamber top of upper cylinder barrel 11 is upper oil cavitie A, upper piston rod assembly 2 comprises the upper piston rod 23 be located in cylinder barrel 11, upper piston rod 23 upper end is stretched out dust cover 5 and is connected with upper bracket 21, upper bracket 21 endoporus is provided with joint shaft bearing 22, upper piston rod 23 has piston assembly 7, lower cylinder barrel assembly 3 comprises lower cylinder barrel 31, lower piston rod 4 is positioned at lower cylinder barrel 31, lower cylinder barrel 31 inner chamber of the top and the bottom of lower piston rod 4 forms middle oil pocket B and lower oil cavitie C respectively, intermediate support 14 is provided with between upper cylinder barrel 11 and lower cylinder barrel 31, intermediate support 14 is provided with filler opening G and oil outlet F, lower cylinder barrel 31 has undersetting 33, undersetting 33 is provided with servo-actuated elongated slot D, vehicle frame mount pin E is provided with in servo-actuated elongated slot D, the diameter of lower piston rod 4 is greater than the diameter of upper piston rod 23, on lower cylinder barrel 31 inner chamber, wall portion is provided with Steel Cable Baffle Ring 8, auxiliary oil pipe conducting is provided with between the top of lower cylinder barrel 31 and the bottom of upper cylinder barrel 11, auxiliary oil pipe comprises auxiliary oil pipe I13 and auxiliary oil pipe II32, auxiliary oil pipe I13 and auxiliary oil pipe II32 are connected with the bottom of upper cylinder barrel 11 and the top of lower cylinder barrel 31 respectively, connect with transit joint 9 between auxiliary oil pipe I13 and auxiliary oil pipe II32.Oil outlet F on intermediate support 14 communicates with main oil pipe 12, filler opening G on intermediate support 14 is provided with one-way valve 15, piston cavity is provided with between filler opening G and oil outlet F, control piston H is provided with in piston cavity, the outer wall of control piston H and the inner chamber of piston cavity are provided with seal ring, communicate with filler opening G and be provided with oil inlet hole 53 and valve seat orifice 54, the aperture of valve seat orifice 54 is greater than the aperture of oil inlet hole 53, one-way valve 15 comprises the steel ball 51 be arranged in valve seat orifice 54 and the spring 52 withstood on steel ball 51, steel ball 51 is arranged at valve seat orifice 54 and oil inlet hole 53 intersection, and with oil inlet hole 53 fitted seal, valve seat orifice 54 communicates with oil pocket B with by H passage, an end face on control piston 10 is provided with the top 101 that can add oil inlet hole 53, top 101 is positioned at oil inlet hole 53, the movement of control piston 10 can overcome spring force and back down steel ball 51.
The utility model is owing to designing the outer follow-up action section D of oil cylinder on the undersetting 33 of oil cylinder, and undersetting 33 is designed to elongated slot structure D, installs on vehicle frame by the mount pin E on vehicle frame, lower piston rod 4 installs in lower cylinder barrel assembly 3, forms sealing system by respective seals, upper piston rod assembly 2 is contained in cylinder barrel assembly 1, forms sealing system by dust cover 5, bush Assembly 6, piston assembly 7 and respective seals, upper cylinder barrel assembly 1 and lower cylinder barrel assembly 3 are undertaken connecting with spacing by Steel Cable Baffle Ring 8 and position-limitting pin, and transport pipe I13 and auxiliary oil pipe II32 is connected by transit joint 9 simultaneously, be provided with control piston 10, one-way valve 15, filler opening G and oil outlet F in intermediate support 14, realize the lifting/decline fuel feeding of cylinder system, and the locking in neutral position, the diameter of lower piston rod 4 is greater than upper piston rod 23 diameter, thus realize: during lifting, filler opening G oil-feed in intermediate support 14, open the one-way cock 15 of Fen Qiang unidirectional self-lock mechanism, pressure oil enters intermediate cavity B, lower piston rod 4 is first stretched out, then the mount pin E on vehicle frame is pushed down, and then oil cylinder moves lifting on the whole, when lower piston rod 4 to the end after, upper piston rod 23 ejects, continue quick lifting operator cabin, in whole process, first the hydraulic oil of lower oil cavitie C is via auxiliary oil pipe II, transit joint 9 and auxiliary oil pipe I, enter upper oil cavitie A, then the Fen Qiang unidirectional self-lock mechanism top of intermediate support 14 is entered via main oil pipe 12, again from oil outlet F exudate force feed, during decline, oil outlet F oil-feed in intermediate support 14, pressure oil enters upper oil cavitie A via main oil pipe 12, enter the movement of opening control piston 10 can overcome spring force and back down steel ball 51 simultaneously, upper piston rod 23 first reclaims fast, and the slightly slow return of lower piston rod 4, in this process, hydraulic oil inside middle oil pocket B flows out from the one-way cock 15 opened, and discharges from filler opening G, when in lifting or decline process, filler opening F or oil outlet G all enters without pressure oil, and the check-valve port 15 in Fen Qiang unidirectional self-lock mechanism closes locking, guarantees that oil cylinder can stop not gliding in any position, during driving, vehicle frame mount pin E can the relative unrestricted motion along with operator cabin pitch in the elongated slot D of oil cylinder undersetting 33, thus plays follow-up action.Follow-up section is combined the lifting stroke being converted into product by this structure follow-up-type oil cylinder, realizing, outside the servo-actuated reliably of product and basic lifting function, also achieving the compact of product, has been beneficial to the layout of oil cylinder and operator cabin.In a word, a kind of new structure follow-up-type oil cylinder involved by this model utility, while the advantages such as the processability had at the outer slave cylinder of reservation tradition is good, sealing system part is reliable, outer phantom element is moved to mounting point under oil cylinder, act on by two sections of piston rods when lifting works, follow-up section stroke substantially invalid for existing oil cylinder is converted into available lifting working stroke, to realize the long action effect of short oil cylinder, is convenient to car load layout.
Finally, it is also to be noted that what enumerate above is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive from disclosed content of the present utility model or associate, all should think protection domain of the present utility model.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, model utility is further illustrated.
Fig. 1 is the structural representation of the utility model embodiment in extreme lower position; Fig. 2 be the utility model embodiment at lower piston masthead to structural representation during vehicle frame mount pin; Fig. 3 is the structural representation of the utility model embodiment in extreme higher position; Fig. 4 is the K-K generalized section of the utility model embodiment institute intermediate support; Fig. 5 is the utility model embodiment form structure schematic diagram.
In figure: 1, upper cylinder barrel assembly 2, upper piston rod assembly 3, lower cylinder barrel assembly 4, lower piston rod 5, dust cover 6, bush Assembly 7, piston assembly 8, Steel Cable Baffle Ring, 9, transit joint 10, control piston 11, upper cylinder barrel 12, main oil pipe 13, auxiliary oil pipe I 14, intermediate support 15, one-way valve 21, upper bracket 22, joint shaft bearing 23, upper piston rod 31, lower cylinder barrel 32, auxiliary oil pipe II 33, undersetting 51, steel ball 52, spring 53, oil inlet hole 54, valve seat orifice A, upper oil cavitie B, middle oil pocket C, lower oil cavitie D, follow-up section E, vehicle frame mount pin F, oil outlet G, filler opening H, passage.
Claims (2)
1. the structure of a hydraulic cab follow-up-type oil cylinder, comprise cylinder barrel assembly (1), upper piston rod assembly (2), lower cylinder barrel assembly (3) and lower piston rod (4), the main oil pipe (12) that upper cylinder barrel assembly (1) comprises cylinder barrel (11) and is connected with upper cylinder barrel (11) top, upper cylinder barrel (11) upper end is provided with dust cover (5) and bush Assembly (6), the inner chamber top of upper cylinder barrel (11) is upper oil cavitie (A), upper piston rod assembly (2) draws together the upper piston rod (23) be located in cylinder barrel (11), upper piston rod (23) upper end is stretched out dust cover (5) and is connected with upper bracket (21), upper bracket (21) endoporus is provided with joint shaft bearing (22), upper piston rod (23) has piston assembly (7), lower cylinder barrel assembly (3) comprises lower cylinder barrel (31), lower piston rod (4) is positioned at lower cylinder barrel (31), lower cylinder barrel (31) inner chamber of the top and the bottom of lower piston rod (4) forms middle oil pocket (B) and lower oil cavitie (C) respectively, intermediate support (14) is provided with between upper cylinder barrel (11) and lower cylinder barrel (31), intermediate support (14) is provided with filler opening (G) and oil outlet (F), it is characterized in that lower cylinder barrel (31) has undersetting (33), undersetting (33) is provided with servo-actuated elongated slot (D), vehicle frame mount pin (E) is provided with in servo-actuated elongated slot (D), the diameter of lower piston rod (4) is greater than the diameter of upper piston rod (23), on lower cylinder barrel (31) inner chamber, wall portion is provided with Steel Cable Baffle Ring (8), auxiliary oil pipe conducting is provided with between the top of lower cylinder barrel (31) and the bottom of upper cylinder barrel (11), oil outlet (F) on intermediate support (14) communicates with main oil pipe (12), filler opening (G) on intermediate support (14) is provided with one-way valve (15), piston cavity is provided with between filler opening (G) and oil outlet (F), control piston (H) is provided with in piston cavity, the outer wall of control piston (H) and the inner chamber of piston cavity are provided with seal ring, be provided with oil inlet hole (53) and valve seat orifice (54) successively, oil inlet hole (53) and valve seat orifice (54) communicate with filler opening (G), the aperture of valve seat orifice (54) is greater than the aperture of oil inlet hole (53), one-way valve (15) comprises the steel ball (51) be arranged in valve seat orifice (54) and the spring (52) withstood on steel ball (51), steel ball (51) is arranged at valve seat orifice (54) and oil inlet hole (53) intersection, and with oil inlet hole (53) fitted seal, valve seat orifice (54) communicates with oil pocket (B) with by (H) passage, an end face on control piston (10) is provided with the top (101) that can add oil inlet hole (53), top (101) is positioned at oil inlet hole (53), the movement of control piston (10) can overcome spring force and back down steel ball (51).
2. the structure of a kind of hydraulic cab follow-up-type oil cylinder according to claim 1, it is characterized in that above-mentioned auxiliary oil pipe comprises auxiliary oil pipe I (13) and auxiliary oil pipe II (32), auxiliary oil pipe I (13) is connected with the bottom of upper cylinder barrel (11) and the top of lower cylinder barrel (31) respectively with auxiliary oil pipe II (32), connects between auxiliary oil pipe I (13) and auxiliary oil pipe II (32) with transit joint (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866779.0U CN204512054U (en) | 2014-12-30 | 2014-12-30 | A kind of structure of hydraulic cab follow-up-type oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420866779.0U CN204512054U (en) | 2014-12-30 | 2014-12-30 | A kind of structure of hydraulic cab follow-up-type oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512054U true CN204512054U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420866779.0U Expired - Fee Related CN204512054U (en) | 2014-12-30 | 2014-12-30 | A kind of structure of hydraulic cab follow-up-type oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204512054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481966A (en) * | 2014-12-30 | 2015-04-01 | 浙江科力车辆控制***有限公司 | Structure of hydraulic follow-up type oil cylinder of cab |
-
2014
- 2014-12-30 CN CN201420866779.0U patent/CN204512054U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481966A (en) * | 2014-12-30 | 2015-04-01 | 浙江科力车辆控制***有限公司 | Structure of hydraulic follow-up type oil cylinder of cab |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20161230 |