CN2315105Y - Hydraulic controller for lowing heavy weight matter - Google Patents
Hydraulic controller for lowing heavy weight matter Download PDFInfo
- Publication number
- CN2315105Y CN2315105Y CN 97248226 CN97248226U CN2315105Y CN 2315105 Y CN2315105 Y CN 2315105Y CN 97248226 CN97248226 CN 97248226 CN 97248226 U CN97248226 U CN 97248226U CN 2315105 Y CN2315105 Y CN 2315105Y
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- CN
- China
- Prior art keywords
- oil
- jack
- valve
- weight
- oil pressure
- 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 discloses a hydraulic controller for lowering the weight, which is composed of an oil pressure gauge, a reversing valve, a lifting jack, an oil pump, an electric motor and an overflow valve. The overflow valve is arranged between the oil return path of the reversing valve of a hydraulic oil path and an oil tank. The oil pressure of a lower oil chamber is balanced with or a little lower than the jack bearing capacity when the piston with load is backward retracted by adjusting the overflow oil pressure of the overflow valve. Thus the purpose that the balance control is conducted to the bearing capacity of each jack is realized. The weight is safely and reliably lowered to the position by the jack is guaranteed. Meanwhile, the device has simple structure, easy control and low cost.
Description
The utility model relates to a kind of hydraulic control device of lifting means, is a kind of hydraulic control device that is used for the safe decline weight of the whole long distance of lifting means specifically.
Adopt many to promote the whole length of jack at four above suspension centres apart from the decline weight, owing to be raised the deadweight of weight, even load-bearing jack upper oil cavitie does not provide oil pressure, the lifted weight thing also can drive jack piston and fall automatically, and the equipment that has used at present is not because of detecting the oil pressure of the upper and lower oil pocket of load-bearing jack, can't directly carry out regulation and control to the balanced of every jack bearing capacity, thereby can not guarantee that weight safety, reliable decline put in place.
The purpose of this utility model is to provide a kind of weight decline hydraulic control device, and it can carry out the equilibrium regulation and control to every jack bearing capacity, guarantees weight decline safety, reliable.
The purpose of this utility model realizes in the following way: by pass valve is serially connected between the oil return line and fuel tank of change-over valve, when adopting many to promote jack integral body decline weight, adjust the overflow oil pressure of the by pass valve that is connected in series on the change-over valve oil return line of each suspension centre hydraulic control oil circuit, make the adjusted oil pressure just in time can balance jack bearing capacity or low slightly, during piston bringing onto load retraction, the oil pressure that can guarantee lower oil cavitie is balance jack bearing capacity or low slightly just in time, thereby realizes the balanced control of the carrying out of each jack bearing capacity.
Because the change-over valve oil return line of each suspension centre hydraulic circuit of the utility model is provided with by pass valve, by adjusting the overflow oil pressure of this by pass valve, the oil pressure that makes lower oil cavitie just in time can balance jack bearing capacity or low slightly, the overflow oil pressure that will be connected by pass valve on the upper oil cavitie hydraulic circuit again is adjusted into 1～2MPa, realization is to the balanced control of the carrying out of each jack bearing capacity, when weight descends, make the control of jack bearing capacity in allowed limits, safe and reliable the transferring of weight put in place to guarantee jack.In addition, this apparatus structure is simple, and control is easy, and cost is lower.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1---be structural representation of the present utility model.
As shown in Figure 1, the utility model is the improvement that promotes on the jack hydraulic control oil channel basis existing, it is by oil pressure indicator 3, change-over valve 4, promote jack 5, oil pump 6, motor 7, by pass valve 8 constitutes, on change-over valve 4 oil return lines of hydraulic circuit and be serially connected with by pass valve 1 between the fuel tank, make it just in time can balanced hoisting jack bearing capacity or low slightly by the overflow oil pressure of adjusting by pass valve 1, and the overflow oil pressure that will be connected in by pass valve 2 on the upper oil cavitie hydraulic circuit is adjusted to 1～2MPa, during the piston retraction, the oil pressure of lower oil cavitie just in time can balanced hoisting jack bearing capacity or low slightly, makes very heavy heading tape focus on thing safety, reliable decline.In order to reduce energy consumption of electrical machinery, prevent oily temperature rise, at the two ends of by pass valve 1 oil circuit and be connected to two-position two-way solenoid valve or two-position four-way solenoid valve 9, only when very heavy heading tape is focused on thing decline, two-position two-way solenoid valve or two-position four-way solenoid valve 9 just are in off-position, the oil circuit of electromagnetic valve 9 turn-offs, thereby the oil return that guarantees the jack lower oil cavitie can only be returned fuel tank by by pass valve 1; When the piston zero load is stretched out or move conversion, electromagnetic valve 9 energisings, oil return this moment is directly by the accessible fuel tank that returns of the oil circuit of electromagnetic valve 9.
Claims (3)
1, a kind of weight decline hydraulic control device, comprise oil pressure indicator (3), change-over valve (4), promote jack (5), oil pump (6), motor (7), by pass valve (8), it is characterized in that by pass valve (1) is serially connected between the oil return line and fuel tank of change-over valve (4).
2, weight decline hydraulic control device according to claim 1 is characterized in that being connected with by pass valve (2) on the upper oil cavitie hydraulic circuit.
3, weight decline hydraulic control device according to claim 1 and 2 is characterized in that at the two ends of by pass valve (1) oil circuit and is connected to two-position two-way solenoid valve or two-position four-way solenoid valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97248226 CN2315105Y (en) | 1997-11-04 | 1997-11-04 | Hydraulic controller for lowing heavy weight matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97248226 CN2315105Y (en) | 1997-11-04 | 1997-11-04 | Hydraulic controller for lowing heavy weight matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2315105Y true CN2315105Y (en) | 1999-04-21 |
Family
ID=33955475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97248226 Expired - Lifetime CN2315105Y (en) | 1997-11-04 | 1997-11-04 | Hydraulic controller for lowing heavy weight matter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2315105Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013010390A1 (en) * | 2011-07-15 | 2013-01-24 | 上海三一科技有限公司 | Winding emergency lowering apparatus and crane comprising the same |
| CN116119565A (en) * | 2023-04-17 | 2023-05-16 | 四川航泰航空装备有限公司 | Manual-automatic integrated universal hydraulic jack mechanism |
-
1997
- 1997-11-04 CN CN 97248226 patent/CN2315105Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013010390A1 (en) * | 2011-07-15 | 2013-01-24 | 上海三一科技有限公司 | Winding emergency lowering apparatus and crane comprising the same |
| CN116119565A (en) * | 2023-04-17 | 2023-05-16 | 四川航泰航空装备有限公司 | Manual-automatic integrated universal hydraulic jack mechanism |
| CN116119565B (en) * | 2023-04-17 | 2023-07-25 | 四川航泰航空装备有限公司 | Manual-automatic integrated universal hydraulic jack mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |