CN204851838U - YT type is high reliability oscillating leveling pneumatic cylinder for fire engine - Google Patents
YT type is high reliability oscillating leveling pneumatic cylinder for fire engine Download PDFInfo
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- CN204851838U CN204851838U CN201520365329.8U CN201520365329U CN204851838U CN 204851838 U CN204851838 U CN 204851838U CN 201520365329 U CN201520365329 U CN 201520365329U CN 204851838 U CN204851838 U CN 204851838U
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Abstract
The utility model discloses a YT type is high reliability oscillating leveling pneumatic cylinder for fire engine, including cylinder, piston, casing, rack, gear, wherein, piston and rack are arranged in the cylinder, and the piston is located the both ends of rack and is connected with the rack, rack and gear cooperation, set up support ring and oil blanket between piston and cylinder inner wall, its characterized in that: cylinder and casing be whole mechanism, the both ends of cylinder the end cover is equipped with the end cover on the inserted valve is equipped with, inner wall and the rack of cylinder between fan -shaped axle bush is equipped with. The utility model discloses simple structure, it is little to occupy the host computer space, processing is simple, and the manufacturability is good, and the assembly is easy, the operational reliability is high, avoids the work platform who leads to because of line pressure loss problem to incline, has improved the security.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, and specifically a kind of YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, belongs to fire-fighting special device technical field.
Background technique
Aerial ladder truck operationally, working platform will be in level the moment to guarantee the safety of normal operation and operating personnel, the leveling oil hydraulic cylinder that current aerial ladder truck at home and abroad generally uses is gear rack oil hydraulic cylinder, as shown in figure: between two sections of cylinder barrels, guide pin bushing is set with tooth bar back, at the outer installment casing of the middle part of cylinder barrel and gear, the middle guide pin bushing by casing and tooth bar back directly bears the side direction additional force of generation when work from wheel and rack, this oil hydraulic cylinder is not easy distortion, and no longer pass on piston by tooth bar due to the lateral force of gear mesh tooth bar, the monolateral friction between piston and cylinder barrel can not be caused, considerably increase the working life of oil hydraulic cylinder, and, the soft underprop guide pin bushing at tooth bar back, easy to manufacture, low price, guidance quality and wear resistance good, its fricative impurity also can not destroy cylinder barrel.But, owing to adding gear rack on oil hydraulic cylinder, make the structure of oil hydraulic cylinder become complicated, and volume is large, but aerial ladder truck compact structure, limited space, common gear rack oil hydraulic cylinder cannot meet usage requirement.
Summary of the invention
For above-mentioned prior art Problems existing, the utility model provides a kind of YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, can adjust the angle of working platform at any time, improve Security.
To achieve these goals, what the utility model adopted is YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, comprises cylinder barrel, piston, housing, tooth bar, gear, wherein, piston and tooth bar are arranged in cylinder barrel, and piston is positioned at the two ends of tooth bar and is connected with tooth bar, and rack and pinion coordinates; Support ring and oil sealing are set between piston and inner wall of cylinder; It is characterized in that: described cylinder barrel and housing are integrated model; At the two ends of described cylinder barrel, end cap is housed, described end cap is equipped with cartridge valve; Between the inwall and tooth bar of described cylinder barrel, fan-shaped bearing shell is housed.
Described fan-shaped bearing shell coordinates with the symmetrical side of the profile of tooth of tooth bar, in the movement process of tooth bar, provide radial support.
Described housing is equipped with lubricating cup.
Described cylinder barrel and housing adopt the preparation process of first postwelding boring
Compared with prior art, the utility model structure is simple, occupies hosting space little; Processing is simple, good manufacturability, and assembling easily; Functional reliability is high, avoids the working platform caused because of pressure loss in piping problem to tilt, improves Security.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional gear rack oil hydraulic cylinder;
Fig. 2 is structural representation of the present utility model.
In figure: 1, cartridge valve, 2, gear, 3, end cap, 4, cylinder barrel, 5, piston, 6, housing, 7, lubricating cup, 8, oil sealing, 9, fan-shaped bearing shell, 10, tooth bar, 11, support ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 2, this YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, comprise YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, comprise cylinder barrel 4, piston 5, housing 6, tooth bar 10, gear 2, wherein, piston 5 and tooth bar 10 are arranged in cylinder barrel 4, and piston 5 is positioned at the two ends of tooth bar 10 and is connected with tooth bar 10, and tooth bar 10 coordinates with gear 2; Support ring 11 and oil sealing 8 are set between piston 5 and cylinder barrel 4 inwall.Cylinder barrel 4 and housing 6 are integrated model, cylinder barrel 4 and housing 6 adopt the preparation process of first postwelding boring, both ensure that the straightness accuracy of cylinder barrel 4 two ends endoporus, improve the reliability of sealing, let out in preventing, greatly improve gear 2 and the accuracy of mesh of tooth bar 10 by numerical control boring and milling equipment again, ensure that oil cylinder commutates steadily in running.At the two ends of cylinder barrel 4, end cap 3 is housed, described end cap 3 is equipped with cartridge valve 1, outside oil circuit can be integrated, make product with compact structure, avoid causing working platform to tilt because system line pressures declines simultaneously, improve the reliability of oil cylinder.Between the inwall and tooth bar 10 of cylinder barrel 4, fan-shaped bearing shell 9 is housed, the endoporus of fan-shaped bearing shell 9 and the cylindrical Spielpassung of tooth bar 10, the cylindrical of fan-shaped bearing shell 9 and cylinder barrel 4 inwall Spielpassung, fan-shaped bearing shell 9 coordinates with the symmetrical side of the profile of tooth of tooth bar 10, radial support is provided in the movement process of tooth bar 10, thus avoid causing transmission not steady because tooth bar 10 is bending, reduce two ends piston 5 sealing wear because radial force causes simultaneously.Described housing 6 is equipped with lubricating cup 7, injects lubricating grease by lubricating cup 7, ensure that gear 2 and tooth bar 10 engage steadily, fluent.Under the combination of above-mentioned feature, straight line motion is converted to circular movement by gear 2 and tooth bar 10 transmission, with reach adjust working platform at any time angle to ensure the safety of normal operation and operating personnel.
Claims (4)
1. a YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder, comprise cylinder barrel (4), piston (5), housing (6), tooth bar (10), gear (2), wherein, piston (5) and tooth bar (10) are arranged in cylinder barrel (4), piston (5) is positioned at the two ends of tooth bar (10) and is connected with tooth bar (10), and tooth bar (10) coordinates with gear (2); Support ring (11) and oil sealing (8) are set between piston (5) and cylinder barrel (4) inwall; It is characterized in that, described cylinder barrel (4) and housing (6) are integrated model; At the two ends of described cylinder barrel (4), end cap (3) is housed, described end cap (3) is equipped with cartridge valve (1); Between the inwall and tooth bar (10) of described cylinder barrel (4), fan-shaped bearing shell (9) is housed.
2. YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder according to claim 1, it is characterized in that, described fan-shaped bearing shell (9) coordinates with the symmetrical side of the profile of tooth of tooth bar (10), in the movement process of tooth bar (10), provide radial support.
3. YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder according to claim 1, is characterized in that, described housing (6) arranges lubricating cup (7).
4. YT type used in fire-fighting high reliability swing type leveling oil hydraulic cylinder according to claim 1, it is characterized in that, described cylinder barrel (4) and housing (6) adopt the preparation process of first postwelding boring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365329.8U CN204851838U (en) | 2015-05-29 | 2015-05-29 | YT type is high reliability oscillating leveling pneumatic cylinder for fire engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365329.8U CN204851838U (en) | 2015-05-29 | 2015-05-29 | YT type is high reliability oscillating leveling pneumatic cylinder for fire engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851838U true CN204851838U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365329.8U Active CN204851838U (en) | 2015-05-29 | 2015-05-29 | YT type is high reliability oscillating leveling pneumatic cylinder for fire engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN204851838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179371A (en) * | 2015-08-31 | 2015-12-23 | 徐州重型机械有限公司 | Leveling gear and rack type swing hydraulic cylinder and fire engine using structure |
| CN108240368A (en) * | 2016-12-27 | 2018-07-03 | 哈尔滨圣高强科技有限公司 | Hydraulic cylinder sealing device and installation method based on rack pinion |
-
2015
- 2015-05-29 CN CN201520365329.8U patent/CN204851838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179371A (en) * | 2015-08-31 | 2015-12-23 | 徐州重型机械有限公司 | Leveling gear and rack type swing hydraulic cylinder and fire engine using structure |
| CN108240368A (en) * | 2016-12-27 | 2018-07-03 | 哈尔滨圣高强科技有限公司 | Hydraulic cylinder sealing device and installation method based on rack pinion |
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| C14 | Grant of patent or utility model | ||
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