CN201553113U - Hydraulic system for crawler traction engines - Google Patents
Hydraulic system for crawler traction engines Download PDFInfo
- Publication number
- CN201553113U CN201553113U CN 200920098507 CN200920098507U CN201553113U CN 201553113 U CN201553113 U CN 201553113U CN 200920098507 CN200920098507 CN 200920098507 CN 200920098507 U CN200920098507 U CN 200920098507U CN 201553113 U CN201553113 U CN 201553113U
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- valve block
- valve
- utility
- hydraulic system
- traction engines
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- Expired - Fee Related
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- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model belongs to crawler traction engines, and particularly relates to a hydraulic system for the crawler traction engines. The hydraulic system is characterized in that a variable capacity pump is connected with a diversion integrated valve block and a manual throttling valve block; and a pilot pump is connected with a pilot manipulation integrated valve block, and is connected with a cooling system in a return oil circuit. The utility model has the benefits that the system can conduct ratio control during operation according to the working conditions, and applies a negative flow control system, so that the field operation control capability is improved, the operation is optimized, the work efficiency is the highest, and the effects of full use of energy sources and environmental protection are achieved.
Description
Technical field
The utility model belongs to caterpillar tractor, relates in particular to a kind of hydraulic efficiency pressure system of caterpillar tractor.
Background technology
Employed flow divider valve major part is equivalent shunting or proportional diverting in the hydraulic efficiency pressure system at present, and certain limitation is arranged.Therefore, in actual job, the ratio control of shunting is the problem that we often run into, often need us that the ratio of shunting is regulated, need again sometimes the flow of total system is regulated, to reach the optimization of system job, the gram branch utilizes the energy, avoids the waste of the energy.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provide a kind of hydraulic efficiency pressure system that ratio can be regulated of shunting, the shunting apportioning valve can make power element with certain speed ratio operation by shunting in this hydraulic efficiency pressure system, can also regulate ratio according to the operating mode demand.After the shunting ratio was set up, the shunting ratio value was not subjected to the variation of POF and the influence of load variations.In addition; in order more effectively to utilize and protection system; when operation is in low load region; can come the flow of control system with manual throttle valve; when operation is in high load region, taked the minus flow control system in the system, regulated the flowrate variation of total system with this; it is reasonable to reach power division, the effect of energy-conservation, efficient, environmental protection.
The utility model for achieving the above object, adopt following skill to ask scheme: a kind of hydraulic efficiency pressure system of caterpillar tractor comprises rough filter, micronic filter, controllable capacity pump, flow divider valve, pilot operated directional control valve, safety valve, power element, pilot control system (pioneer pump, hand change over valve, safety valve) and minus flow control system (manual throttle valve, controllable capacity pump), cooling system (oil cooler, check valve).It is characterized in that: when operation is in low load region, can come the flow of control system, when operation is in high load region, take the minus flow control system to come the flow of control system in the system with manual throttle valve.Be connected with shunting integrated valve block, manual throttle valve piece by controllable capacity pump, pioneer pump be connected with the pilot control integrated valve block and oil return circuit in the connection of cooling system.
The beneficial effects of the utility model: this system can carry out ratio control in the operation according to the demand of operating mode, in efficient district, the application of minus flow control system, improved the control ability of field operation greatly, make the operation optimization, satisfy the operating mode needs, reach the effect that makes full use of the energy.
Description of drawings
Be hydraulic schematic diagram of the present utility model as shown in the figure.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with Figure of description and preferred embodiment.
A kind of hydraulic efficiency pressure system of caterpillar tractor equipment comprises rough filter 1, micronic filter 11, fuel tank 16, controllable capacity pump 2, flow divider valve 3, pilot operated directional control valve 4, safety valve 13, reducing valve 6, HM Hydraulic Motor 14, pilot control system (pioneer pump 9, hand change over valve 5, flow regulating valve 7, safety valve 8) and minus flow control system (manual throttle valve 10, controllable capacity pump 2), cooling system (oil cooler 12, check valve 15).It is characterized in that: be connected with shunting integrated valve block, manual throttle valve piece by controllable capacity pump, pioneer pump be connected with the pilot control integrated valve block and oil return circuit in the connection of cooling system.
Principle of work: driving engine is given controllable capacity pump transmission of power by elastic coupling, hydraulic oil in the hydraulic reservoir is by the magnetic rough filter, sucked by controllable capacity pump, then by being pumped into flow divider valve integrated valve block (flow divider valve, pilot operated directional control valve, safety valve), the controllable capacity pump opening pressure of safety valve is set at 25Mpa, be used for controlling the oil pressure of sending into the shunting integrated valve block, and then supply with two motor M1, M2, the hydraulic oil that comes out from motor is through pilot operated directional control valve, again by getting back to fuel tank after the Oil cooler cooling.In addition, hydraulic oil in the hydraulic reservoir is sucked by pioneer pump by the magnetic rough filter, the pioneer pump opening pressure of safety valve is set at 3.5Mpa, be used for controlling the oil pressure of sending into hand change over valve, the hydraulic oil that comes out from change-over valve enters control mouth (k1, k2, the k3 of pilot operated directional control valve as control presssure oil, k4), thus realized the commutation of motor.In addition, the reducing valve shown in the hydraulic schematic diagram 6 provides the normal pressure of 2Mpa for oil cylinder.Under the steady load situation, flow system flow is certain, can regulate the shunting ratio, reaches the best needs of operating mode.Under higher load condition, adopted the minus flow control system in the hydraulic efficiency pressure system, be used for regulating the flow of total system; Under zero load or light load state, by regulating manual throttle valve, can be transferred to minimum to the flow of system, avoid the waste of the energy, thereby reached energy-saving and cost-reducing effect.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1. the hydraulic efficiency pressure system of a caterpillar tractor is characterized in that: be connected with shunting integrated valve block, manual throttle valve piece by controllable capacity pump, pioneer pump be connected with the pilot control integrated valve block and oil return circuit in the connection of cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920098507 CN201553113U (en) | 2009-08-27 | 2009-08-27 | Hydraulic system for crawler traction engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920098507 CN201553113U (en) | 2009-08-27 | 2009-08-27 | Hydraulic system for crawler traction engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201553113U true CN201553113U (en) | 2010-08-18 |
Family
ID=42612789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920098507 Expired - Fee Related CN201553113U (en) | 2009-08-27 | 2009-08-27 | Hydraulic system for crawler traction engines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201553113U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229328A (en) * | 2011-05-05 | 2011-11-02 | 四川大学 | Vehicle mechanical energy-saving hydraulic system with multi-pump confluence |
| CN102320520A (en) * | 2011-08-18 | 2012-01-18 | 南通润邦重机有限公司 | Wind power installation crane hydraulic control circuit |
| GB2501486A (en) * | 2012-04-24 | 2013-10-30 | Jc Bamford Excavators Ltd | Work machine having a hydraulic system comprising variable orifice ratios |
| CN104129728A (en) * | 2014-08-20 | 2014-11-05 | 国家电网公司 | Full-hydraulic split type cableway traction machine |
| CN106762902A (en) * | 2016-12-20 | 2017-05-31 | 河北大唐国际唐山热电有限责任公司 | A kind of coal pulverizer oil supply system frequency conversion loading system |
| CN109372810A (en) * | 2018-11-14 | 2019-02-22 | 广州宝力特液压密封有限公司 | A kind of big flow squeezing machine hydraulic system |
-
2009
- 2009-08-27 CN CN 200920098507 patent/CN201553113U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229328A (en) * | 2011-05-05 | 2011-11-02 | 四川大学 | Vehicle mechanical energy-saving hydraulic system with multi-pump confluence |
| CN102229328B (en) * | 2011-05-05 | 2013-05-08 | 四川大学 | Vehicle mechanical energy-saving hydraulic system with multi-pump confluence |
| CN102320520A (en) * | 2011-08-18 | 2012-01-18 | 南通润邦重机有限公司 | Wind power installation crane hydraulic control circuit |
| CN102320520B (en) * | 2011-08-18 | 2013-05-22 | 南通润邦重机有限公司 | Wind power installation crane hydraulic control circuit |
| GB2501486A (en) * | 2012-04-24 | 2013-10-30 | Jc Bamford Excavators Ltd | Work machine having a hydraulic system comprising variable orifice ratios |
| CN104129728A (en) * | 2014-08-20 | 2014-11-05 | 国家电网公司 | Full-hydraulic split type cableway traction machine |
| CN106762902A (en) * | 2016-12-20 | 2017-05-31 | 河北大唐国际唐山热电有限责任公司 | A kind of coal pulverizer oil supply system frequency conversion loading system |
| CN109372810A (en) * | 2018-11-14 | 2019-02-22 | 广州宝力特液压密封有限公司 | A kind of big flow squeezing machine hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Construction Machinery Factory Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Construction Machinery Factory Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20180827 |