CN202730562U - A hydraulic system device for track layer traveling power matching - Google Patents
A hydraulic system device for track layer traveling power matching Download PDFInfo
- Publication number
- CN202730562U CN202730562U CN 201120533520 CN201120533520U CN202730562U CN 202730562 U CN202730562 U CN 202730562U CN 201120533520 CN201120533520 CN 201120533520 CN 201120533520 U CN201120533520 U CN 201120533520U CN 202730562 U CN202730562 U CN 202730562U
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- valve
- sequence
- sequence valve
- hydraulic system
- solenoid operated
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Abstract
The utility model provides a hydraulic system device for track layer traveling power matching. The hydraulic system device for the track layer traveling power matching comprises a conventional closed pump system; the side of the closed pump system is connected with a bypass system formed by two sequence valves and two electromagnetic directional valves, the two electromagnetic directional valves comprising a first electromagnetic directional valve and a second electromagnetic directional valve; oil inlet ports of the first electromagnetic directional valve and the second electromagnetic directional valve are connected to an outlet terminal of an oil supply pump of the closed pump system in parallel; a first sequence valve and a second sequence valve are connected under the two electromagnetic directional valves in series respectively; outlets of the first sequence valve and the second sequence valve are connected to an oil storage tank; and control oil ways of the first sequence valve and the second sequence valve are connected to an internal shuttle valve of the closed pump system in parallel and fetches high pressure oil of A and B ports of a closed pump through the internal shuttle valve of the closed pump, the high pressure oil serving as guide control oil of the sequence valves (2 and 3) for closing and opening control of the sequence valves.
Description
Technical field
The utility model belongs to a kind of part device structure of vehicle, refers in particular to a kind of track-laying machine traveling power matching hydraulic system.
Background technology
General track-laying machine all has running mechanism, and running mechanism all is again to be driven by hydraulic drive mechanism; Existing traveling hydraulic system is divided into moving axis traveling hydraulic system and creeper truck traveling hydraulic system, the separate but acting in conjunction of two systems.Moving axis traveling hydraulic system is electric rate variable closed type hydraulic system, and system pressure becomes with load, and hydraulic motor is fixed displacement motor; The creeper truck walking system is automatically controlled three bit variable closed type hydraulic systems, and hydraulic motor is fixed displacement motor.The track-laying machine operation is divided into upward slope, level line and three kinds of working conditions of descending, for rationally solving moving axis traveling hydraulic system and the creeper truck traveling hydraulic system power output relation system under each operating mode, in creeper truck traveling hydraulic system, increase system dynamic matching valve group, to give full play to the maximum effect of each system, namely so that moving axis and creeper truck outputting power are balanced.Creeper truck traveling hydraulic system principle figure is illustrated in fig. 1 shown below; Its operating principle is:
When track-laying machine started under the level line operating mode, moving axis traveling hydraulic system hydraulic pump discharge changed from small to big, and in the constant situation of load, the hydraulic motor output torque is substantially constant.At this moment, the output of creeper truck traveling hydraulic system hydraulic pump maximum pump discharge, speed is maximum, both traveling speeds are different, creeper truck walking system hypertonia must cause creeper truck to skid or drag the moving axis motor walking generally speaking, and there is unfavorable factor in moving axis traveling hydraulic system hydraulic pump.Therefore at creeper truck traveling hydraulic system high pressure side-draw guide oil, solenoid operated directional valve 4.1 energisings, guide oil limits system pressure by sequence valve 5.1, when pressure surpasses sequence valve 5.1 setting pressure, guide oil enters hydraulic pump discharge control servo-cylinder low-pressure side, thereby reduce hydraulic pump output discharge capacity, reduce the creeper truck traveling speed.Reach the coefficient purpose of moving axis and creeper truck.In like manner when the descending operating mode, solenoid operated directional valve 4.2 is switched on, and guide oil limits system pressures by sequence valve 5.2.Above-mentioned hydraulic system, power matching can only work under track-laying machine advances the operating mode of track laying, and when track-laying machine fell back, power matching was inoperative.In addition, enclosed pump servo-cylinder control oil is directed to the hydraulic pump high-pressure side, and except hydraulic system is existed the energy loss, there is certain unfavorable factor in hypertonia to hydraulic pump low pressure servo-drive system simultaneously.Therefore necessary this is improved.
The utility model content
The purpose of this utility model is, for existing track-laying machine running mechanism, when track-laying machine fell back, power matching was inoperative, and enclosed pump servo-cylinder control oil is directed to the hydraulic pump high-pressure side, hypertonia, except hydraulic system is existed the energy loss, simultaneously hydraulic pump low pressure servo-drive system is existed the deficiency of certain unfavorable factor, propose a kind of when track-laying machine falls back, power matching works, and the lower track-laying machine traveling power matching hydraulic system of control oil pressure ratio.
The purpose of this utility model is achieved through the following technical solutions: a kind of track-laying machine traveling power matching hydraulic system, described track-laying machine traveling power matching hydraulic system comprises the enclosed pumping system of a routine, is connected to by 2 sequence valves and 2 bypath systems that solenoid operated directional valve forms on enclosed pumping system next door; Wherein, 2 solenoid operated directional valves are respectively the first solenoid operated directional valve and the second solenoid operated directional valve; The oiler of the first solenoid operated directional valve and the second solenoid operated directional valve also is connected in the port of export (B end) of enclosed pumping system slippage pump; Be serially connected with a sequence valve under each solenoid operated directional valve, be respectively the first sequence valve and the second sequence valve, the outlet of the first sequence valve and the second sequence valve accesses respectively fuel reserve tank; Shuttle valve in the oil circuit control of the first sequence valve and the second sequence valve access in parallel enclosed pumping system, get enclosed pump A, B mouth hydraulic oil by shuttle valve in the enclosed pump, pilot control oil as sequence valve (2,3) carries out open and close controlling to sequence valve, make the pressure oil off-load in the enclosed pump servo-cylinder, to reduce the enclosed pump delivery, gait of march, balanced creeper truck and the moving axis traveling pressure in control creeper truck traveling loop.Enclosed pump servo-cylinder control oil is taken at slippage pump, and pressure is lower.
The utility model has the advantages that, by a bypath system, adjust the pressure oil off-load in the enclosed pump servo-cylinder, improved the reliability of system, reduced the compression shock to the hydraulic pump servo-drive system, and forward-reverse can both play control action.
Description of drawings
Fig. 1 is the hydraulic system schematic diagram of existing track-laying machine running mechanism;
Fig. 2 is hydraulic system schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Embodiment one
Can find out by accompanying drawing, the utility model relates to a kind of track-laying machine traveling power matching hydraulic system, described track-laying machine traveling power matching hydraulic system comprises enclosed pump 1 system of a routine, is connected to by 2 sequence valves and 2 bypath systems that solenoid operated directional valve forms on enclosed pumping system next door; Wherein, 2 solenoid operated directional valves are respectively the first solenoid operated directional valve 4 and the second solenoid operated directional valve 5; The oiler of the first solenoid operated directional valve 4 and the second solenoid operated directional valve 5 also is connected in the port of export (B end) of enclosed pumping system slippage pump; Be serially connected with a sequence valve under each solenoid operated directional valve, the outlet that is respectively the first sequence valve 2 and the second sequence valve 3, the first sequence valves 2 and the second sequence valve 3 accesses respectively fuel reserve tank; The oil circuit control of the first sequence valve 2 and the second sequence valve 3 access in parallel enclosed pumping system 1 interior shuttle valve, get enclosed pump A, B mouth hydraulic oil by shuttle valve in the enclosed pump, pilot control oil as the first sequence valve 2 and the second sequence valve 3 carries out open and close controlling to sequence valve, make the pressure oil off-load in the enclosed pump servo-cylinder, to reduce the enclosed pump delivery, gait of march, balanced creeper truck and the moving axis traveling pressure in control creeper truck traveling loop.Enclosed pump servo-cylinder control oil is taken at slippage pump, and pressure is lower.
The utility model has the advantages that, by a bypath system, adjust the pressure oil off-load in the enclosed pump servo-cylinder, improved the reliability of system, reduced the compression shock to the hydraulic pump servo-drive system, and forward-reverse can both play control action.
Claims (4)
1. track-laying machine traveling power matching hydraulic system, described track-laying machine traveling power matching hydraulic system comprises the enclosed pumping system of a routine, it is characterized in that: be connected to by 2 sequence valves and 2 bypath systems that solenoid operated directional valve forms on enclosed pumping system next door.
2. track-laying machine traveling power matching hydraulic system as claimed in claim 1, it is characterized in that: 2 solenoid operated directional valves are respectively the first solenoid operated directional valve and the second solenoid operated directional valve; The oiler of the first solenoid operated directional valve and the second solenoid operated directional valve also is connected in the port of export (B end) of enclosed pumping system slippage pump; Be serially connected with a sequence valve under each solenoid operated directional valve, be respectively the first sequence valve and the second sequence valve, the outlet of the first sequence valve and the second sequence valve accesses respectively fuel reserve tank.
3. track-laying machine traveling power matching hydraulic system as claimed in claim 2, it is characterized in that: shuttle valve in the oil circuit control of the first sequence valve and the second sequence valve access in parallel enclosed pumping system, get enclosed pump A, B mouth hydraulic oil by shuttle valve in the enclosed pump, as the pilot control oil of sequence valve (2 and 3) sequence valve is carried out open and close controlling.
4. track-laying machine traveling power matching hydraulic system as claimed in claim 3 is characterized in that: enclosed pump servo-cylinder control oil is taken at slippage pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533520 CN202730562U (en) | 2011-12-20 | 2011-12-20 | A hydraulic system device for track layer traveling power matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533520 CN202730562U (en) | 2011-12-20 | 2011-12-20 | A hydraulic system device for track layer traveling power matching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202730562U true CN202730562U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120533520 Expired - Fee Related CN202730562U (en) | 2011-12-20 | 2011-12-20 | A hydraulic system device for track layer traveling power matching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202730562U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530782A (en) * | 2021-07-15 | 2021-10-22 | 中铁工程装备集团有限公司 | Large displacement pump with rapid pressure cut-off protection function and protection method thereof |
| CN114483675A (en) * | 2021-12-09 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Rig feed cylinder closed electrohydraulic control system |
-
2011
- 2011-12-20 CN CN 201120533520 patent/CN202730562U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530782A (en) * | 2021-07-15 | 2021-10-22 | 中铁工程装备集团有限公司 | Large displacement pump with rapid pressure cut-off protection function and protection method thereof |
| CN113530782B (en) * | 2021-07-15 | 2022-07-08 | 中铁工程装备集团有限公司 | Large displacement pump with rapid pressure cut-off protection function and protection method thereof |
| CN114483675A (en) * | 2021-12-09 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Rig feed cylinder closed electrohydraulic control system |
| CN114483675B (en) * | 2021-12-09 | 2023-10-31 | 中煤科工集团西安研究院有限公司 | Closed electrohydraulic control system for feeding cylinder of drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20130826 Granted publication date: 20130213 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20140226 Granted publication date: 20130213 |
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| PP01 | Preservation of patent right |
Effective date of registration: 20140226 Granted publication date: 20130213 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20140826 Granted publication date: 20130213 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Di Document name: Notification of Termination of Procedure |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20191220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |