CN201212124Y - Hydraulic vibrating open type system with bidirectional overload protection - Google Patents
Hydraulic vibrating open type system with bidirectional overload protection Download PDFInfo
- Publication number
- CN201212124Y CN201212124Y CNU2008200376611U CN200820037661U CN201212124Y CN 201212124 Y CN201212124 Y CN 201212124Y CN U2008200376611 U CNU2008200376611 U CN U2008200376611U CN 200820037661 U CN200820037661 U CN 200820037661U CN 201212124 Y CN201212124 Y CN 201212124Y
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- hydraulic
- valve
- hydraulic motor
- vibration
- gear pump
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Abstract
The utility model discloses a hydraulic vibration open type system which has bidirectional overloading protection. The hydraulic vibration open type system is composed of a gear pump, a safe overflow valve, a manual vibration control valve and a hydraulic motor. The manual vibration control valve is respectively connected with the hydraulic motor and the gear pump by pipelines and the pipeline between the gear pump and the manual vibration control valve is provided with the safe overflow valve. The utility model is characterized in that the pipeline between the manual vibration control valve and the hydraulic motor is provided with a bidirectional overloading protection valve to cause impulse high voltage to not occur in a loop at the moment that a hydraulic road roller starts to vibrate or stops vibrating, thereby the service life of the hydraulic motor is prolonged; when the hydraulic road roller stops vibrating, an oil pressure difference in the loop is balanced in time by the overloading protection of a cartridge valve to fulfill the damping action to a vibration roller, and the vibration roller stops in time, thereby the work efficiency of the road roller is enhanced.
Description
Technical field: the utility model relates to a kind of road roller, relates in particular to a kind of hydraulic system of hydraulic roller.
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, start, commutating, can produce impact when stopping for fear of the mechanical oscillation road roller, can the road surface of compacting be damaged, and 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, has occurred various types of hydraulic vibration road rollers on the market and has replaced mechanical oscillation.Adopt the road roller of this structure to have following defective: 1. in the moment of starting of oscillation or failure of oscillation, impulse high voltage can occur in the loop, hydraulic motor is prone to wearing and tearing for a long time under this duty, has reduced the application life of hydraulic motor; 2. when failure of oscillation,, influenced the operating efficiency of road roller because the inertia of vibrator can't in time stop vibration.
The utility model content: the utility model purpose is to provide a kind of hydraulic roller with having the hydraulic vibration open system of two-way overload protective, make the moment of hydraulic roller at starting of oscillation or failure of oscillation, impulse high voltage can not occur in the loop, improve the application life of hydraulic motor; Overload protection by cartridge valve when failure of oscillation in time balances the oil pressure difference in the loop, and vibrator is played damping action, and vibrator is in time stopped, and has improved the operating efficiency of road roller.
The utility model is achieved in that a kind of hydraulic vibration open system with two-way overload protective; form by gear pump, safety overflow valve, manual vibration isolation valve and hydraulic motor; described manual vibration isolation valve links to each other with gear pump with described hydraulic motor respectively by pipeline; pipeline between described gear pump and the manual vibration isolation valve is provided with safety overflow valve, and it is characterized in that: the pipeline between described manual vibration isolation valve and the hydraulic motor is provided with the two-way overload protective valve.
The utility model compared with prior art has following advantage:
1. owing to adopt the two-way overload protective valve, make the moment of road roller at starting of oscillation or failure of oscillation, impulse high voltage occurs in the loop and in time be balanced, improve the application life of hydraulic motor;
2. owing to adopt the two-way overload protective valve, the overload protection by cartridge valve when failure of oscillation in time balances the oil pressure difference in the loop, and vibrator is played damping action, and vibrator is in time stopped, and has improved the operating efficiency of road roller.
Description of drawings: Fig. 1 is principle schematic 1. safety overflow valves 2. gear pumps 3. manual vibration isolation valve 4. two-way overload protective valves 5. hydraulic motors 6. connecting lines of system described in the utility model
The specific embodiment: as can be seen from Figure 1; a kind of hydraulic vibration open system with two-way overload protective; form by gear pump 2, safety overflow valve 1, manual vibration isolation valve 3 and hydraulic motor 5; described manual vibration isolation valve 3 links to each other with gear pump 2 with described hydraulic motor 5 respectively by connecting line 6; connecting line 6 between described gear pump 2 and the manual vibration isolation valve 3 is provided with safety overflow valve 1, and it is characterized in that: the connecting line 6 between described manual vibration isolation valve 3 and the hydraulic motor 5 is provided with two-way overload protective valve 4.
In the situation of not starting of oscillation, manually the vibration isolation valve is in meta, and the hydraulic oil by gear pump is got back to fuel tank via the meta of hand-operated valve, handles unloading condition.When need vibrated, after pushing to handle preceding or pulling to, hydraulic oil CD-ROM drive motor forward or reverse made the eccentric block in the vibrating wheels carry out different combinations, thus produce shake by force or a little less than shake.In the moment of starting of oscillation or failure of oscillation, instantaneous high pressure can appear in the oil pressure of hydraulic motor 5 both sides, at this moment because the effect of two-way overload protective valve 4 in time balances the high pressure that occurs, hydraulic motor is played a protective role.
When failure of oscillation, the oil pressure difference in the loop is in time balanced, vibrator is played damping action, vibrator is in time stopped, improved the operating efficiency of road roller by overload protection.
Described two-way overload protective valve 4 adopts cartridge valve.
Claims (2)
1. hydraulic vibration open system with two-way overload protective; by gear pump (2); safety overflow valve (1); manually vibration isolation valve (3) and hydraulic motor (5) are formed; described manual vibration isolation valve (3) links to each other with gear pump (2) with described hydraulic motor (5) respectively by connecting line (6); connecting line (6) between described gear pump (2) and the manual vibration isolation valve (3) is provided with safety overflow valve (1), and it is characterized in that: the connecting line (6) between described manual vibration isolation valve (3) and the hydraulic motor (5) is provided with two-way overload protective valve (4).
2. a kind of hydraulic vibration open system with two-way overload protective according to claim 1 is characterized in that: described two-way overload protective valve (4) is a cartridge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200376611U CN201212124Y (en) | 2008-06-27 | 2008-06-27 | Hydraulic vibrating open type system with bidirectional overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200376611U CN201212124Y (en) | 2008-06-27 | 2008-06-27 | Hydraulic vibrating open type system with bidirectional overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212124Y true CN201212124Y (en) | 2009-03-25 |
Family
ID=40496290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200376611U Expired - Fee Related CN201212124Y (en) | 2008-06-27 | 2008-06-27 | Hydraulic vibrating open type system with bidirectional overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212124Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824792A (en) * | 2010-03-01 | 2010-09-08 | 江阴柳工道路机械有限公司 | Constant speed device for tandem vibratory roller |
| CN111601928A (en) * | 2018-01-19 | 2020-08-28 | 酒井重工业株式会社 | Construction vehicle |
-
2008
- 2008-06-27 CN CNU2008200376611U patent/CN201212124Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824792A (en) * | 2010-03-01 | 2010-09-08 | 江阴柳工道路机械有限公司 | Constant speed device for tandem vibratory roller |
| CN111601928A (en) * | 2018-01-19 | 2020-08-28 | 酒井重工业株式会社 | Construction vehicle |
| CN111601928B (en) * | 2018-01-19 | 2022-07-26 | 酒井重工业株式会社 | Construction 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: 20090325 Termination date: 20130627 |