CN203717533U - Oil cylinder hydraulic lock for tower crane lifting system - Google Patents
Oil cylinder hydraulic lock for tower crane lifting system Download PDFInfo
- Publication number
- CN203717533U CN203717533U CN201420004938.6U CN201420004938U CN203717533U CN 203717533 U CN203717533 U CN 203717533U CN 201420004938 U CN201420004938 U CN 201420004938U CN 203717533 U CN203717533 U CN 203717533U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- oil cylinder
- cylinder hydraulic
- oil outlet
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model discloses an oil cylinder hydraulic lock for a tower crane lifting system. The oil cylinder hydraulic lock can operate stably and reliably for a long time and comprises a valve seat, and a push rod is arranged at an oil outlet end of the valve seat and is located through a locator arranged in the valve seat. Two seal grooves are formed in the valve seat, seal structures are arranged in the seal grooves, and a threaded hole is formed in the oil outlet end of the valve seat. The locator comprises a location nut which is arranged in the threaded hole and in threaded connection with the threaded hole, the end of the location nut abuts against the end of the push rod, and an oil outlet is formed in the location nut. The two seal grooves are arranged at an interval. The seal structures comprise O-shaped rings and retaining rings arranged on the two sides of the O-shaped rings.
Description
Technical field
The utility model relates to a kind of lock of the oil cylinder hydraulic for tower machine jack-up system.
Background technique
Hydraulic equipment is the important component part of main equipment, and the performance of hydraulic equipment is directly determining the performance of main equipment.The hydraulic equipment of tower crane is made up of jacking cylinder and jacking pumping plant, oil cylinder is the significant components of hydraulic equipment, and hydraulic lock is the critical elements of oil cylinder, the performance quality of hydraulic lock is the factor that determines oil cylinder performance quality always, is also the factor that determines tower machine performance.
Along with the economic development of China, building is more and more at present, and super-high buildings is also more and more, and building need to be used various tower crane, and in order to meet the needs of super-high buildings, tower machine also needs superelevation, and it is particularly important that the safety issue of ultra-high tower crane seems.Its supernumerary segment of tower crane is realized by jack-up system, when jacking, require oil cylinder to want the above whole top of jack-up tower machine pivoting support weight, its top weight of different tower machines is different, all have from more than 20 tons to more than 500 tons, and can make tower machine rest on any position, so that the installation of standard knot, Given this operating mode, just require the Security of hydraulic system necessary definite reliable, this just requires the hydraulic lock of jacking cylinder necessary safe and reliable.Current hydraulic lock as shown in Figure 1, is provided with push rod in the oil outlet end of valve seat, and push rod is by being arranged on the elastic collar location in valve seat.This position structure can cause because of reasons such as processing factors, groove dimensions are defective the disengaging of elastic collar, and the pressure of hydraulic oil easily thrusts elastic collar simultaneously, because elastic collar is subject to, after high pressure, brittle failure phenomenon easily occurs.And, in the seal groove arranging, be only provided with back-up ring in a side of O type circle on valve seat, in the time that reality is used, can there is the phenomenon that O type circle damages, sealing configuration was lost efficacy.
Model utility content
The technical problem that the utility model solves be to provide a kind of can long time stability the lock of the oil cylinder hydraulic for tower machine jack-up system of operation.
The utility model solves the technological scheme that its technical problem adopts: for the oil cylinder hydraulic lock of tower machine jack-up system, comprise valve seat, in the oil outlet end of valve seat, be provided with push rod, push rod is by being arranged on the locating piece location in valve seat, on valve seat, be provided with seal groove, in seal groove, be provided with sealing configuration, the oil outlet end of described valve seat is provided with tapped hole, described locating piece comprises the setscrew nut being threaded with tapped hole being arranged in tapped hole, the end of setscrew nut and the end of push rod against, on setscrew nut, have oil outlet.
Further: the number of seal groove is 2, described 2 seal groove intervals arrange, and described sealing configuration comprises O type circle and is arranged on the back-up ring of the both sides of O type circle.
The beneficial effects of the utility model are: due to setscrew nut employing is thread connecting mode, the validity of the installation of having guaranteed, safe and reliable, setscrew nut itself has stronger compression resistance, be difficult for because of damages that deform of the pressure of hydraulic oil, can guarantee that oil cylinder hydraulic lock long time stability moves.Because the both sides of O type circle are all provided with back-up ring, to find by long-term use, O type circle is not fragile, can the sealing effect that ensure structure steady in a long-term.
Brief description of the drawings
Fig. 1 is the schematic diagram of oil cylinder hydraulic lock of the prior art;
Fig. 2 is the schematic diagram of oil cylinder hydraulic lock of the present utility model;
Fig. 3 is the schematic diagram of valve seat;
In figure, be labeled as: seal groove 1, O type circle 2, back-up ring 3, valve seat 4, elastic collar 5, push rod 6, setscrew nut 7, oil outlet 8, tapped hole 9.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Figures 2 and 3, for the oil cylinder hydraulic lock of tower machine jack-up system, comprise valve seat 4, in the oil outlet end of valve seat 4, be provided with push rod 6, push rod 6 is by being arranged on the locating piece location in valve seat 4, on valve seat 4, be provided with seal groove 1, in seal groove 1, be provided with sealing configuration, it is characterized in that: the oil outlet end of described valve seat 4 is provided with tapped hole 9, described locating piece comprises the setscrew nut being threaded with tapped hole 7 being arranged in tapped hole 9, the end of the end of setscrew nut 7 and push rod 6 against, on setscrew nut 7, have oil outlet 8.As shown in Figure 2, the middle position of setscrew nut 7 has the oil outlet 8 for hydraulic oil is passed through.Arrange like this, be also convenient to oil in the more high-intensity while of guarantee.
On the basis of the above, not fragile in order to ensure O type circle, as shown in Figure 2, the number of seal groove 1 is 2, and described 2 seal groove intervals arrange, and described sealing configuration comprises O type circle 2 and is arranged on the back-up ring 3 of the both sides of O type circle 2.
Claims (2)
1. lock for the oil cylinder hydraulic of tower machine jack-up system, comprise valve seat (4), in the oil outlet end of valve seat (4), be provided with push rod (6), push rod (6) is by being arranged on the locating piece location in valve seat (4), on valve seat (4), be provided with seal groove (1), seal groove is provided with sealing configuration in (1), it is characterized in that: the oil outlet end of described valve seat (4) is provided with tapped hole (9), described locating piece comprises the setscrew nut being threaded with tapped hole (7) being arranged in tapped hole (9), the end of the end of setscrew nut (7) and push rod (6) against, on setscrew nut (7), have oil outlet (8).
2. the lock of the oil cylinder hydraulic for tower machine jack-up system as claimed in claim 1, it is characterized in that: the number of seal groove (1) is 2, described 2 seal groove intervals arrange, and described sealing configuration comprises O type circle (2) and is arranged on the back-up ring (3) of the both sides of O type circle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004938.6U CN203717533U (en) | 2014-01-03 | 2014-01-03 | Oil cylinder hydraulic lock for tower crane lifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004938.6U CN203717533U (en) | 2014-01-03 | 2014-01-03 | Oil cylinder hydraulic lock for tower crane lifting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717533U true CN203717533U (en) | 2014-07-16 |
Family
ID=51156692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420004938.6U Expired - Lifetime CN203717533U (en) | 2014-01-03 | 2014-01-03 | Oil cylinder hydraulic lock for tower crane lifting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671359A (en) * | 2014-01-03 | 2014-03-26 | 四川建设机械（集团）股份有限公司 | Oil cylinder hydraulic lock used for tower crane jacking system |
-
2014
- 2014-01-03 CN CN201420004938.6U patent/CN203717533U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671359A (en) * | 2014-01-03 | 2014-03-26 | 四川建设机械（集团）股份有限公司 | Oil cylinder hydraulic lock used for tower crane jacking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |