CN2488893Y - Hydraulic lifting device for tower crane - Google Patents
Hydraulic lifting device for tower crane Download PDFInfo
- Publication number
- CN2488893Y CN2488893Y CN 01245344 CN01245344U CN2488893Y CN 2488893 Y CN2488893 Y CN 2488893Y CN 01245344 CN01245344 CN 01245344 CN 01245344 U CN01245344 U CN 01245344U CN 2488893 Y CN2488893 Y CN 2488893Y
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- CN
- China
- Prior art keywords
- pump
- hydraulic
- jacking
- valve
- tower crane
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic pressure lifting device of tower crane, comprising a pump station and a lifting oil cylinder; wherein, the pump station is connected with the lifting oil cylinder. Case of the pump station is connected with an air filter, a pressure meter, an electromotor, a hydraulic pressure pump and a steering valve which is connected with a manual hydraulic pressure pump. In sudden power-off or the failure of the electromotor or the hydraulic pressure pump, the utility model can still finish lifting or landing work by use of a manual hydraulic pressure pump, thereby eliminating the danger caused by power-off while conducting the lifting and landing works of the prior tower crane. Besides, the device can be used as lifting device for tower crane.
Description
Technical field
The utility model relates to a kind of jacking apparatus of tower crane.
Background technology
Known tower machine jacking apparatus comprises pumping plant and jacking cylinder.Pumping plant is installed on the raising legs of tower machine, and jacking cylinder one end is fixed on the raising legs, and the other end is bearing on the standard knot.The stretching out and bounce back the jacking of control tower machine and landing of jacking cylinder.This jacking apparatus can't be finished the normal operation of jacking of tower machine or landing when sudden power or electrical motor or Hydraulic Pump inefficacy.Tower crane just when jacking or landing operation, turn between standard knot and tower cap by the high strength attachment bolt, and the tower machine of this moment is in the jacking top and does not get on, and falls the suspension situation of not getting off.If meet strong wind just again, the tower machine just has been in integral body tempestuously in the dither state, and is extremely dangerous.
Summary of the invention
The purpose of this utility model is that a kind of tower machine hydraulic jacking device will be provided, and this hydraulic jacking device still can be finished jacking of tower machine or landing operation when sudden power or electrical motor or Hydraulic Pump inefficacy.
The purpose of this utility model is achieved in that this tower machine jacking apparatus comprises pumping plant and jacking cylinder, pumping plant links to each other with jacking cylinder, the casing of pumping plant is connected with airfilter, compression indicator, electrical motor, Hydraulic Pump and change-over valve, and change-over valve is connected with hydraulic hand-pump.
Described hydraulic hand-pump connects handle and connecting rod and handle and connecting rod by piston, the piston rod upper end of connecting band piston rod in the check valve of pump housing lower end connecting band oil suction filter screen, the pump housing and connects and be configured to.
The change-over valve of the utility model pumping plant is connected with hydraulic hand-pump, when sudden power or electric motor fails, still can utilize hydraulic hand-pump to finish jacking of tower machine or landing operation, eliminated the danger that present tower crane produces when jacking and landing operation outage or electrical motor or Hydraulic Pump inefficacy.The jacking apparatus that can be used as tower crane uses.
Below in conjunction with the drawings and the specific embodiments the utility model is elaborated.
Description of drawings
Fig. 1 is the constructional drawing of a specific embodiment of the present utility model.
Fig. 2 is the hydraulic hand-pump constructional drawing among Fig. 1.
Fig. 3 is the hydraulic schematic diagram of Fig. 1.
Fig. 4 is the constructional drawing of another specific embodiment of the present utility model.
Fig. 5 is the hydraulic schematic diagram of Fig. 4.
Fig. 6 is the figure that installs and uses of Fig. 4
1. electrical motors among the figure, 2. electric switch, 3. hydraulic hand-pump, 3-1. support, 3-2. piston, 3-3. piston envelope, 3-4. plunger lock nut, 3-5. check valve, 3-6. oil suction filter screen, 3-7. packing seal, 3-8. oil outlet, 3-9. piston rod, 3-10. pilot seal, 3-11. guided bearing ring, 3-12. piston rod dust ring, 3-13. locking big nut, 3-14. handle and connecting rod, 4. airfilter, 5. Hydraulic Pump, 6. oil suction net, 7. oil ga(u)ge, 8. change-over valve, 8-1. internal control balance cock, 8-2. unloader valve, 8-3. adjustable safety valve, 8-4. safety valve, 8-5. check valve, 8-6. one-way throttle valve 9. compression indicators, 10. jacking cylinder, 10-1. two control speed pressure retaining valves, 10-2. balance cock, 11. high-pressure rubber pipe, 12. raising legs, 13. standard knot.
The specific embodiment
In Fig. 1, pumping plant 11 links to each other with jacking cylinder 10, and the casing of pumping plant 11 is connected with airfilter 4, compression indicator 9, electrical motor 1, Hydraulic Pump 5 and change-over valve 8, and change-over valve 8 is connected with hydraulic hand-pump 3.Airfilter 4, Hydraulic Pump 5, there are hydraulic hand-pump 3 and change-over valve 8 to be positioned at casing.
In Fig. 2, hydraulic hand-pump 3 connects handle and connecting rod 3-14 and handle and connecting rod 3-14 by piston 3-2, the piston rod 3-9 upper end of connecting band piston rod 3-9 in the check valve 3-5 of pump housing lower end connecting band oil suction filter screen 3-6, the pump housing and connects support 3-1 and constitute.Oil outlet 3-8 is used to connect three position four-way directional control valve 8.
In Fig. 3, electrical motor 1 drives Hydraulic Pump 5 rotary works, the pressure oil liquid that Hydraulic Pump 5 is got enters 3-position 4-way hand change over valve 8 by check valve 8-5 under the pressure limiting of adjustable safety valve 8-3 and safety valve 8-4, handle jacking and landing that hand change over valve 8 can be realized jacking cylinder 10.Unloader valve 8-2 control enters the pressure of jacking cylinder 10 loculuses, and internal control balance cock 8-1 plays stabilization.3-position 4-way hand change over valve 8, internal control balance cock 8-1, unloader valve 8-2, adjustable safety valve 8-3, safety valve 8-4 and check valve 8-5 are a control valve assembly.Two control speed pressure retaining valve 10-1 are positioned at jacking cylinder 10, play speed governing and protective effect.When electrical motor 1 or Hydraulic Pump 5 lost efficacy or during sudden power, handle hydraulic hand-pump 3 and provide pressure oil liquid to system, replace the function of Hydraulic Pump 5, realize the jacking landing of jacking cylinder 10.
In Fig. 4, pumping plant links to each other with jacking cylinder 10, and the casing of pumping plant is connected with airfilter 4, compression indicator 9, electrical motor 1, Hydraulic Pump 5 and change-over valve 8, and change-over valve 8 is connected with hydraulic hand-pump 3.Airfilter 4, Hydraulic Pump 5 and have hydraulic hand-pump 3 to be positioned at casing.8 of change-over valves are positioned at above the casing.
In Fig. 5, electrical motor 1 drives Hydraulic Pump 5 rotary works, and the pressure oil liquid that Hydraulic Pump 5 is got enters 3-position 4-way hand change over valve 8 by check valve under the pressure limiting of safety valve 8-3, handle jacking and landing that hand change over valve 8 can be realized jacking cylinder 10.One-way throttle valve 8-6 control jacking and sinking speed, balance cock 10-2 shields.Balance cock 10-2 is not in jacking cylinder 10.3-position 4-way hand change over valve 8, two one-way throttle valve 8-6 and three hand change over valves 8 are being a control valve assembly.When electrical motor 1 or Hydraulic Pump 5 lost efficacy or during sudden power, handle hydraulic hand-pump 3 and provide pressure oil liquid to system, replace the function of Hydraulic Pump 5, realize the jacking and the landing of jacking cylinder 10.
In Fig. 6, pumping plant is installed on the raising legs 12 of tower machine, and jacking cylinder 10 1 ends are fixed on the raising legs 12, and the other end is bearing on the standard knot 13.
Starting electric switch 2, electrical motor 1 drive Hydraulic Pump 5 rotations and provide propulsion source to system, and pressure oil liquid enters jacking cylinder 10 by three position four-way directional control valve 8, the action of control jacking cylinder 10.This is the work under the normal condition.
When having a power failure, upwards move handle and connecting rod 3-14, hydraulic hand-pump 3 sucks fluid, move handle and connecting rod 3-14 downwards, hydraulic hand-pump 3 is got high-voltage oil liquid, the high-voltage oil liquid of getting from hydraulic hand-pump 3 enters jacking cylinder 10 through three position four-way directional control valve 8, and the jacking and the landing of tower machine are finished in jacking cylinder 10 work.
Claims (2)
1. tower machine hydraulic jacking device, this tower machine hydraulic jacking device comprises pumping plant and jacking cylinder, pumping plant links to each other with jacking cylinder, and the casing of pumping plant is connected with airfilter, compression indicator, electrical motor, Hydraulic Pump and change-over valve, it is characterized in that change-over valve is connected with hydraulic hand-pump.
2. tower machine hydraulic jacking device according to claim 1 is characterized in that hydraulic hand-pump connects handle and connecting rod and handle and connecting rod by piston, the piston rod upper end of connecting band piston rod in the check valve of pump housing lower end connecting band oil suction filter screen, the pump housing and connects and be configured to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245344 CN2488893Y (en) | 2001-08-10 | 2001-08-10 | Hydraulic lifting device for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245344 CN2488893Y (en) | 2001-08-10 | 2001-08-10 | Hydraulic lifting device for tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2488893Y true CN2488893Y (en) | 2002-05-01 |
Family
ID=33656611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01245344 Expired - Fee Related CN2488893Y (en) | 2001-08-10 | 2001-08-10 | Hydraulic lifting device for tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2488893Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403089A (en) * | 2011-10-25 | 2012-04-04 | 黄道华 | New transformer in-place adjusting system |
| WO2012116537A1 (en) * | 2011-03-02 | 2012-09-07 | 长沙中联重工科技发展股份有限公司 | Lifting structure of tower crane, hydraulic system of lifting structure, and lifting method |
| CN103950842A (en) * | 2014-06-06 | 2014-07-30 | 徐州徐工液压件有限公司 | Electric-hydraulic hybrid tower crane jacking system |
| CN113772592A (en) * | 2021-08-26 | 2021-12-10 | 上海航天精密机械研究所 | Wide-range height-adjustable hydraulic lifting device and control method thereof |
-
2001
- 2001-08-10 CN CN 01245344 patent/CN2488893Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012116537A1 (en) * | 2011-03-02 | 2012-09-07 | 长沙中联重工科技发展股份有限公司 | Lifting structure of tower crane, hydraulic system of lifting structure, and lifting method |
| CN102403089A (en) * | 2011-10-25 | 2012-04-04 | 黄道华 | New transformer in-place adjusting system |
| CN103950842A (en) * | 2014-06-06 | 2014-07-30 | 徐州徐工液压件有限公司 | Electric-hydraulic hybrid tower crane jacking system |
| CN103950842B (en) * | 2014-06-06 | 2016-04-27 | 徐州徐工液压件有限公司 | A kind of tower machine jack-up system of electrohydraulic mixed power |
| CN113772592A (en) * | 2021-08-26 | 2021-12-10 | 上海航天精密机械研究所 | Wide-range height-adjustable hydraulic lifting device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |