CN200989345Y - Apparatus for manual regulating speed lowering hydraulic up-down equipment - Google Patents
Apparatus for manual regulating speed lowering hydraulic up-down equipment Download PDFInfo
- Publication number
- CN200989345Y CN200989345Y CN 200620166695 CN200620166695U CN200989345Y CN 200989345 Y CN200989345 Y CN 200989345Y CN 200620166695 CN200620166695 CN 200620166695 CN 200620166695 U CN200620166695 U CN 200620166695U CN 200989345 Y CN200989345 Y CN 200989345Y
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- CN
- China
- Prior art keywords
- oil
- valve
- speed
- hand
- way valve
- 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
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Abstract
The utility model relates to a hand-operated device governing the speed and lowering the hydraulic lifting appliance, a hand-operated speed-governed device arranged between pipelines of a chamber with a piston rod and a chamber without a piston rod in the hydrocylinder (5) and a master oil-return pipeline (7). The hand-operated device consists of a spillover valve (1), a throttle valve (2), a speed-governed branch composed of a check valve B (4) oil pipeline and an oil-compensating branch composed of the check valve A(3) oil pipeline. The hand-operated device has the advantages of simple configuration, manual operation, safety and reliability, which can govern the speed in pole-less way and control the lifting and lowering the hydraulic lifting appliance.
Description
Technical field
The utility model relates to a kind of arrangements for speed regulation of hydraulic system jacking equipment, is particularly useful for the device of manual governing landing hydraulic lifting equipment.
Background technique
The jacking equipment of HYDRAULIC CONTROL SYSTEM, because the hydrovalve or the loss of power accident of control loop, equipment can be parked in certain neutral position, if, when accident recovery, may cause the damage of equipment and personnel's injury because the memory of control command cause equipment to move untimelyly with its safe and reliable original state that drops to.Generally, hydraulic lifting equipment can only be accomplished manual landing equipment, but the speed controlling can not realize manually landing the time, landing equipment that can not safety and steady.
Summary of the invention
For defective and the deficiency that overcomes prior art, the utility model provides a kind of hydrovalve or loss of power accident that solves hydraulic lifting equipment because of control loop, when equipment is parked in certain neutral position, can realize the device of manual governing landing hydraulic lifting equipment to initial position.
The technical scheme in the invention for solving the technical problem is: the device of manual governing landing hydraulic lifting equipment comprises oil hydraulic cylinder and oil circuit, the manual governing device is installed between the rod chamber of oil hydraulic cylinder and rodless cavity pipeline and oil return main line, and the manual governing device comprises speed regulating branch that is connected to form by relief valve, throttle valve, one-way valve B oil circuit and the repairing branch road that is connected to form by one-way valve A oil circuit.
When the need landing equipment, manually close earlier throttle valve, manual unlocking relief valve again, and then manual unlocking throttle valve slowly, the oil part of oil hydraulic cylinder rodless cavity is carried out repairing through enter the rod chamber of oil hydraulic cylinder by one-way valve A, discharges unnecessary flow through throttle valve, one-way valve B simultaneously, and realize the adjusting of equipment rate of descent device security being landed stably by the opening of regulating throttle valve.Can adjust the speed of sinking speed according to actual needs, realize stepless time adjustment control.
The beneficial effects of the utility model are: the configuration of this device is simple, manually-operable, safe and reliable, landing that can stepless time adjustment control hydraulic lifting equipment.
Description of drawings:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is a hydraulic system principle figure of the present utility model.
Among the figure: 1. relief valve, 2. throttle valve, 3. one-way valve A, 4. one-way valve B, 5. oil hydraulic cylinder, 6. major loop, 7. oil return main line, 8. draining main line, 9. oil supply bar road.
Embodiment
Among Fig. 1, the manual governing device is installed between the rod chamber of oil hydraulic cylinder 5 and rodless cavity pipeline and oil return main line 7, and the manual governing device comprises speed regulating branch that is connected to form by relief valve 1, throttle valve 2, one-way valve B4 oil circuit and the repairing branch road that is connected to form by one-way valve A3 oil circuit.During oil hydraulic cylinder 5 proper functioning, relief valve 1 uses as safety valve, according to the system pressure setup pressure value; Throttle valve 2 is all opened, and unobstructed path is provided during for relief valve 1 safe unloading pressure; One-way valve A3 is that the oil that prevents oil hydraulic cylinder 5 rod chambers flows back to oil return main line 7; One-way valve B4 prevents that the oil in the oil return main line 7 from entering the rod chamber of oil hydraulic cylinder 5 through throttle valve 2, one-way valve A3.
When the need landing equipment, manually close earlier throttle valve 2, the manual unlocking relief valve 1 again, and then manual unlocking throttle valve 2 slowly, the oil part of oil hydraulic cylinder 5 rodless cavities is carried out repairing through enter the rod chamber of oil hydraulic cylinder 5 by one-way valve A3, discharges unnecessary flow through throttle valve 2, one-way valve B4 simultaneously, and realize the adjusting of equipment rate of descent device security being landed stably by the opening of regulating throttle valve 2.The effect of one-way valve B4 is to set up the back pressure bigger than one-way valve A3, preferentially gives the rod chamber repairing through one-way valve A3 so that realize the oil of rodless cavity.Can adjust the speed of sinking speed according to actual needs, realize stepless time adjustment control.
Claims (1)
1, a kind of device of manual governing landing hydraulic lifting equipment, comprise oil hydraulic cylinder and oil circuit, it is characterized in that: the manual governing device is installed between the rod chamber of oil hydraulic cylinder (5) and rodless cavity pipeline and oil return main line (7), and the manual governing device comprises the repairing branch road that the speed regulating branch that connected to form by relief valve (1), throttle valve (2), one-way valve B (4) oil circuit and one-way valve A (3) oil circuit connect to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166695 CN200989345Y (en) | 2006-12-22 | 2006-12-22 | Apparatus for manual regulating speed lowering hydraulic up-down equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166695 CN200989345Y (en) | 2006-12-22 | 2006-12-22 | Apparatus for manual regulating speed lowering hydraulic up-down equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989345Y true CN200989345Y (en) | 2007-12-12 |
Family
ID=38940382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620166695 Expired - Lifetime CN200989345Y (en) | 2006-12-22 | 2006-12-22 | Apparatus for manual regulating speed lowering hydraulic up-down equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989345Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386415A (en) * | 2018-05-30 | 2018-08-10 | 湖南三港口设备有限公司 | A kind of anticollision oil cylinder and engineering machinery |
| CN111473007A (en) * | 2020-04-26 | 2020-07-31 | 长江三峡通航管理局 | Water delivery valve hydraulic system for emergency operation of ship lock and emergency valve closing operation method |
-
2006
- 2006-12-22 CN CN 200620166695 patent/CN200989345Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386415A (en) * | 2018-05-30 | 2018-08-10 | 湖南三港口设备有限公司 | A kind of anticollision oil cylinder and engineering machinery |
| CN111473007A (en) * | 2020-04-26 | 2020-07-31 | 长江三峡通航管理局 | Water delivery valve hydraulic system for emergency operation of ship lock and emergency valve closing operation method |
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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 |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |