CN201031345Y - Automatically unlocking system of hydraulic road roller - Google Patents
Automatically unlocking system of hydraulic road roller Download PDFInfo
- Publication number
- CN201031345Y CN201031345Y CNU2007200336412U CN200720033641U CN201031345Y CN 201031345 Y CN201031345 Y CN 201031345Y CN U2007200336412 U CNU2007200336412 U CN U2007200336412U CN 200720033641 U CN200720033641 U CN 200720033641U CN 201031345 Y CN201031345 Y CN 201031345Y
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- China
- Prior art keywords
- valve
- brake
- pump
- road roller
- 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 - Fee Related
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Abstract
The utility model discloses an automatic unlocking system applied to a hydraulic road roller, comprising an oil tank, a pump, a shuttle valve, a pressure-reducing valve and a brake. The brake is connected with the outlet of the shuttle valve through the pressure-reducing valve; the inlet of the shuttle valve is connected with the pump. The utility model is characterized in that an energy accumulator is arranged on the brake through a valve and the energy accumulator is connected with the pump through a check valve; and energy is continuously supplied to the energy accumulator during the operation of the pump to ensure proper pressure. In the event of fault of the road roller, the user can open the valve on the energy accumulator and take use of the pressure of the energy to open the brake to make the road roller to unlock the brake; therefore, the road roller can be towed to the overhaul site easily; the user need not disassemble the hydraulic system and the oil is not released, and no influence is incurred to the road surface during construction work.
Description
Technical field: the utility model relates to a kind of road roller, relates in particular to a kind of hydraulic roller braking system for unlocking.
Technical background: along with country strengthens the infrastructure input, various high-grade highways and speedway are rapidly developed, and the demand of road administration building machineries such as road roller also strengthens thereupon.At present, the various vibratory rollers that occur on the market mostly adopt machine driving to realize vibration, reach the function of compacted subgrade, but mechanically operated noise is very big, have a strong impact on surrounding environment, can constructor's body and mind be damaged, serious meeting influences operating efficiency; Simultaneously, because mechanical oscillation oscillatory roller complex structure, exist to turn to lightly inadequately, flexible, shortcoming such as turning radius is very big can not be constructed road roller in narrow place.Therefore, adopt hydraulic pressure to realize walking, braking and vibrating function on the market now.What adopt in the general road roller is the return oil pressure braking, time permanent rear oil duct draining step-down, machine has sliding phenomenon, and braking effect is undesirable, poor safety performance, after road roller broke down, machine stopped, braking and locking, must pull down and just can untie braking behind the motor and tow, inconvenient operation, fluid leaks simultaneously, and the road surface of constructing is had a negative impact.
Summary of the invention: the utility model purpose is to provide a kind of new type auto system for unlocking, after road roller breaks down, open brake by the pressure in the energy of the poultry in the system device, the form that employing drags is transferred to other local repairing with road roller, need not motor is pulled down, fluid can not leak, and can not have a negative impact to the road surface of constructing.
The utility model is achieved in that a kind of automatic unlocking system of hydraulic roller is made up of fuel tank, pump, shuttle valve, reducing valve and brake, described brake links to each other with described shuttle valve outlet by reducing valve, described shuttle valve import links to each other with described pump, it is characterized in that: described brake is equipped with poultry by valve can device.
The utility model compared with prior art has following advantage:
1. after road roller breaks down, open the valve on the poultry energy device, utilize the pressure of poultry energy device to open brake, make road roller untie braking, can make things convenient for road roller to be towed the maintenance area, and need not hydraulic system is taken apart.
2. because poultry can be connected with pump by one way valve by device, in the pump operate as normal, constantly can provide energy by device, make poultry remain optimum state by device to poultry.
3. because the valve that is adopted is a two-position two-way solenoid valve, after road roller breaks down, can directly raise the unlatching of energy device, handled easily in the driver's cabin inner control.
4. between described fuel tank and pump, be provided with strainer, prevent that the impurity in the fuel tank from entering the pump housing.
Description of drawings: Fig. 1 is the principle schematic of the automatic unlocking system of a kind of hydraulic roller described in the utility model
1. fuel tank 2. strainers 3. pumps 4. one way valves 5. valves
6. accumulator 7. shuttle valves 8. reducing valve 9. brakes
The specific embodiment: a kind of automatic unlocking system of hydraulic roller is made up of fuel tank 1, pump 3, shuttle valve 7, reducing valve 8 and brake 9, described brake 9 links to each other with described shuttle valve 7 outlets by reducing valve 8, described shuttle valve 7 imports link to each other with described pump 3, it is characterized in that: described brake 9 is equipped with poultry by valve 5 can device 6.In order to make poultry remain optimum state by device 6, poultry can be connected with pump 3 by one way valve 4 by device 6, in pump 3 operate as normal, constantly can provide energy by device 6 to poultry, guarantees pressure.Described accumulator 6 is selected suitable capacity according to the size of road roller tonnage, the inside pressurising nitrogen of 5～7Mpa, it is under the situation about breaking down for the motor of road roller or hydraulic system, provides the device of the energy for opening brake.After the nitrogen in the poultry energy device 6 uses up, can arrive the gas station and dash dress.
The directly unlatching of control poultry energy device 6 in driver's cabin for convenience, described valve 5 is a two-position two-way solenoid valve.
Claims (4)
1. the automatic unlocking system of a hydraulic roller is made up of fuel tank (1), pump (3), shuttle valve (7), reducing valve (8) and brake (9), described brake (9) links to each other with described shuttle valve (7) outlet by reducing valve (8), described shuttle valve (7) import links to each other with described pump (3), it is characterized in that: described brake (9) is equipped with poultry by valve (5) can device (6).
2. the automatic unlocking system of a kind of hydraulic roller according to claim 1 is characterized in that: described poultry can be connected with pump (3) by one way valve (4) by device (6).
3. the automatic unlocking system of a kind of hydraulic roller according to claim 1, it is characterized in that: described valve (5) is a two-position two-way solenoid valve.
4. the automatic unlocking system of a kind of hydraulic roller according to claim 1 is characterized in that: be provided with strainer (2) between described fuel tank (1) and pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200336412U CN201031345Y (en) | 2007-01-19 | 2007-01-19 | Automatically unlocking system of hydraulic road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200336412U CN201031345Y (en) | 2007-01-19 | 2007-01-19 | Automatically unlocking system of hydraulic road roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031345Y true CN201031345Y (en) | 2008-03-05 |
Family
ID=39163238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200336412U Expired - Fee Related CN201031345Y (en) | 2007-01-19 | 2007-01-19 | Automatically unlocking system of hydraulic road roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031345Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714655A (en) * | 2010-12-16 | 2016-06-29 | 哈姆股份公司 | Method for operating a self-propelled compaction roller |
| CN106402057A (en) * | 2016-11-02 | 2017-02-15 | 威海市华塔建筑机械有限公司 | Flameout discharging control system and method for movable concrete stirring vehicle |
-
2007
- 2007-01-19 CN CNU2007200336412U patent/CN201031345Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714655A (en) * | 2010-12-16 | 2016-06-29 | 哈姆股份公司 | Method for operating a self-propelled compaction roller |
| CN106402057A (en) * | 2016-11-02 | 2017-02-15 | 威海市华塔建筑机械有限公司 | Flameout discharging control system and method for movable concrete stirring vehicle |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20120119 |