CN203294219U - Track tensioning hydraulic system and walking machinery - Google Patents
Track tensioning hydraulic system and walking machinery Download PDFInfo
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- CN203294219U CN203294219U CN2013203021212U CN201320302121U CN203294219U CN 203294219 U CN203294219 U CN 203294219U CN 2013203021212 U CN2013203021212 U CN 2013203021212U CN 201320302121 U CN201320302121 U CN 201320302121U CN 203294219 U CN203294219 U CN 203294219U
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Abstract
The utility model discloses a track tensioning hydraulic system and walking machinery. The track tensioning hydraulic system comprises a track tensioning oil cylinder, a one-way valve, a pressure valve and an energy accumulator, wherein an inlet of the one-way valve is communicated with the energy accumulator, and an outlet of the one-way valve is communicated with the track tensioning oil cylinder. An inlet of the pressure valve is communicated with the track tensioning oil cylinder, an outlet of the pressure valve is communicated with the energy accumulator, and when the pressure in the track tensioning oil cylinder is higher than the starting pressure of the pressure valve, hydraulic oil flows into the energy accumulator through the pressure valve. According to the track tensioning hydraulic system and the walking machinery, due to the fact that the one-way valve is combined with the pressure valve, a track can be effectively tensioned, and impact to the system can be effectively prevented. The track tensioning hydraulic system has the advantages of being safe and reliable. In addition, the track tensioning hydraulic system and the walking machinery do not need an external oil supplying system and are simple and compact in structure.
Description
Technical field
The utility model relates generally to Hydraulic Field, specifically, relates to a kind of crawler tensioning hydraulic efficiency pressure system, and the walking machine that is provided with this crawler tensioning hydraulic efficiency pressure system.
Background technology
Creeper undercarriage is the vitals of the equipment such as paver, excavating machine, piling machinery, be used to supporting the weight of complete machine, and the mobile operating such as complete that complete machine advances, retreats.For creeper undercarriage, track takeup is the parts of a key, by making the track chain tensioning, allows crawler belt be in good working order, and complete machine is travelled more steadily and safety, is also the assurance of complete machine normal operation.
In prior art, track takeup mainly contains the modes such as external hydraulic efficiency pressure system tensioning, energy storage hydraulic tensioning, the tensioning of spring mechanical formula.For external hydraulic efficiency pressure system tensioning mode, its complex structure, and trouble point is many, not easy care; For energy storage hydraulic tensioning mode, because the energy storage pressure-bearing is limited, can't the setting of pressurising pressure is higher, when the tightening device load is larger, energy storage can't guarantee that tightening device is in tensioning state, and because the compression of energy storage pressurized, when crawler tensioning oil cylinder rollback is too much, easily causes problems such as jumping tooth; For spring mechanical formula tensioning mode, owing between the elastic force of spring and scantling of structure, certain proportionate relationship being arranged, cause the size of spring larger, be subjected to space constraint more, Design and manufacture inconvenience, and spring design complete after difficult adjustment, be difficult to safeguard.
Therefore, how a kind of effectively tensioned tracks is provided, prevents system shock and compact conformation, safe and reliable track takeup, is those skilled in the art's technical matterss urgently to be resolved hurrily.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of crawler tensioning hydraulic efficiency pressure system, and the energy storage that this crawler tensioning hydraulic efficiency pressure system can solve prior art is easy to the problem that oil cylinder rollback that pressurized compression causes and crawler belt are jumped tooth.
Crawler tensioning hydraulic efficiency pressure system of the present utility model, comprise crawler tensioning oil cylinder, check valve, pressure valve and energy storage, wherein:
The import of described check valve is communicated with described energy storage, and the outlet of described check valve is communicated with described crawler tensioning oil cylinder;
The import of described pressure valve is communicated with described crawler tensioning oil cylinder, and the outlet of described pressure valve is communicated with described energy storage, and during greater than the response pressure of described pressure valve, hydraulic oil is by the described energy storage of described pressure valve inflow at the in-oil cylinder pressure of crawler tensioning.
Further, the outlet of described check valve is communicated with the rodless cavity of described crawler tensioning oil cylinder.
Further, described pressure valve is by pass valve.
Further, described energy storage also is connected with for the pressure measuring tie-in to described accumulator pressurizing.
Further, the response pressure of described pressure valve is 200～300 bar.
Another aspect of the present utility model, also provide a kind of walking machine, and this walking machine comprises crawler belt, and be provided with the crawler tensioning hydraulic efficiency pressure system of aforementioned any one, and described crawler tensioning oil cylinder connects described crawler belt.
Further, described walking machine is paver.
The utility model adopts the combination of check valve and pressure valve, and check valve can guarantee that the crawler tensioning oil cylinder is in the rigidity tensioning state, and the crawler tensioning oil cylinder can not cause slack of track by rollback.When system is subject to impacting, utilize the pressure valve off-load and eliminate peak value, then protect oil cylinder, effective tensioned tracks not only, and can also prevent system shock, have security of system failure-free advantage.
The hydraulic oil of pressure valve off-load unloads to energy storage, and after impacting elimination, energy storage is charged to the crawler tensioning oil cylinder by hydraulic oil by check valve again, and in this process, hydraulic oil is recycled, and is without external oil-supplementing system, simple and compact for structure.
The accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the crawler tensioning hydraulic efficiency pressure system of the utility model one embodiment.
Description of reference numerals:
1 crawler tensioning oil cylinder
2 check valves
3 pressure valve
4 energy storages
5 pressure measuring tie-ins
The specific embodiment
It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the utility model can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Shown in Figure 1 is the schematic diagram of the crawler tensioning hydraulic efficiency pressure system of the utility model one embodiment, and this crawler tensioning hydraulic efficiency pressure system, for the crawler belt of tensioning walking machine, makes crawler belt keep suitable degree of tension, guarantees travelling of complete machine safety and steady.The crawler tensioning hydraulic efficiency pressure system of this embodiment comprises crawler tensioning oil cylinder 1, check valve 2, pressure valve 3 and energy storage 4 at least.
Wherein, this crawler tensioning oil cylinder 1 is for connecting band track.According to the installation annexation between this crawler tensioning oil cylinder 1 and crawler belt, this crawler tensioning oil cylinder 1 can be when stretching out or retract tensioned tracks.In the embodiment shown in fig. 1, when this crawler tensioning oil cylinder 1 stretches out, crawler tensioning; When this crawler tensioning oil cylinder 1 is retracted, slack of track.
This crawler tensioning oil cylinder 1 comprises cylinder barrel, and the piston of telescopic moving in cylinder barrel and piston rod.This crawler tensioning oil cylinder 1 both can be preferably single acting oil cylinder shown in Figure 1, and when the rodless cavity oil-feed, piston rod stretches out; When the rodless cavity oil return, piston rod is retracted.Should be understood that, this crawler tensioning oil cylinder 1 also can be two-way cylinder.
The import of check valve 2 is communicated with energy storage 4, and the outlet of check valve 2 is communicated with crawler tensioning oil cylinder 1, thereby guarantees that hydraulic oil is from energy storage 4 to crawler tensioning oil cylinder 1 nonreturn flow, and from crawler tensioning oil cylinder 1 to energy storage 4 mobile the prevention.Because of what utilize this check valve 2, oppositely block function, can guarantee that crawler tensioning oil cylinder 1 is in the rigidity tensioning state all the time, crawler tensioning oil cylinder 1 can not cause slack of track by rollback, crawler belt can not occur then yet and jump the faults such as tooth.According to the concrete annexation between crawler tensioning oil cylinder 1 and crawler belt, preferably the outlet of this check valve 2 is communicated with the rodless cavity of crawler tensioning oil cylinder 1, thereby crawler tensioning oil cylinder 1 is locked at suitable extended position.
The import of pressure valve 3 is communicated with crawler tensioning oil cylinder 1, and the outlet of pressure valve 3 is communicated with energy storage 4, and the pressure crawler tensioning oil cylinder 1 in is during greater than the response pressure of pressure valve 3, and hydraulic oil is by pressure valve 3 inflow energy storages 4.This pressure valve 3 is arranged in parallel with check valve 1, and the import of pressure valve 3 can be by the outlet of threeway connecting band track tensioning hydro-cylinder 1 and check valve 2, and the outlet of this pressure valve 3 can connect by threeway the import of energy storage 4 and check valve 2.
System be subject to greater impact (as outside carry larger) time; if impulsive force reaches the response pressure of pressure valve 3; pressure valve 3 moment off-load; hydraulic oil flows out from crawler tensioning oil cylinder 1; 3 off-loads of process pressure valve are to energy storage 4; guarantee that crawler tensioning oil cylinder 1 can not be subject to large impact, protects this crawler tensioning hydraulic efficiency pressure system not to be damaged then.This pressure valve 3 is preferably by pass valve, and it can be also other hydraulic valve or its combination.For different operating modes, the response pressure that only need to regulate pressure valve 3 gets final product the protection pressure of adjustment System, safeguards simple.The response pressure of preferred pressure valve 3 is set as 200～300 bar.
Further, in order when bringing into use, energy storage 4 to be carried out to pressurising, preferably on the energy storage 4 of the crawler tensioning hydraulic efficiency pressure system of this embodiment, also be connected with for the pressure measuring tie-in 5 to energy storage 4 pressurisings.Should be understood that, various general and special-purpose pressure measuring tie-ins 5 all go for technique effect of the present utility model.In addition, this pressure measuring tie-in 5 is not for tonometric application target in the utility model.
In this pressure measuring tie-in 5, can be provided with Self-sealing valve, while using separately, due to the effect of spring, Self-sealing valve is closed.When needs carry out pressurising to energy storage 4, the joint with thimble is docked and Self-sealing valve can be opened with this pressure measuring tie-in 5, thereby be convenient to external oil sources, energy storage 4 is carried out to pressurising.This pressure measuring tie-in 5 can connect by threeway the import of energy storage 4 and check valve 2.
Principle of work for the crawler tensioning hydraulic efficiency pressure system of previous embodiment is as follows:
Energy storage 4 fills hydraulic oil to crawler tensioning oil cylinder 1 by check valve 2, makes crawler tensioning oil cylinder 1 stretch out, then tensioned tracks.
When crawler tensioning oil cylinder 1 was subject to less impact, the hydraulic oil in crawler tensioning oil cylinder 1 was blocked by check valve 2, can't rollback to energy storage 4, crawler tensioning oil cylinder 1 can rollback, can guarantee that crawler belt is in tensioning state constantly.
When crawler tensioning oil cylinder 1 is subject to greater impact, when impulsive force reaches pressure valve 3 pressure is set, pressure valve 3 moment off-load, hydraulic oil, from pressure valve 3 off-loads to energy storage 4, guarantees that crawler tensioning oil cylinder 1 can not be subject to large impact, protects oil cylinder then.
The hydraulic oil of off-load unloads to energy storage 4, and after crawler tensioning oil cylinder 1 impacted elimination, energy storage 4 was charged to crawler tensioning oil cylinder 1 by hydraulic oil by check valve 2 again, and so iterative cycles, carry out repairing without external hydraulic efficiency pressure system.
Except aforesaid crawler tensioning hydraulic efficiency pressure system, the utility model also provides a kind of walking machine.This walking machine comprises crawler belt, and is provided with aforesaid crawler tensioning hydraulic efficiency pressure system, and aforementioned crawler tensioning oil cylinder 1 is connected on crawler belt.Other structure of this walking machine can be with reference to prior art, and this paper does not repeat them here.
This walking machine can be to adopt the equipment such as track-type construction machinery and equipment, vehicle for construction, mining machinery, preferred this walking machine is paver, this paver is one of essential key equipment of road machinery, the structure of the other parts of paver can be with reference to prior art, and this paper does not repeat them here.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a crawler tensioning hydraulic efficiency pressure system, is characterized in that, comprises crawler tensioning oil cylinder (1), check valve (2), pressure valve (3) and energy storage (4), wherein:
The import of described check valve (2) is communicated with described energy storage (4), and the outlet of described check valve (2) is communicated with described crawler tensioning oil cylinder (1);
The import of described pressure valve (3) is communicated with described crawler tensioning oil cylinder (1), the outlet of described pressure valve (3) is communicated with described energy storage (4), pressure in crawler tensioning oil cylinder (1) is during greater than the response pressure of described pressure valve (3), and hydraulic oil flows into described energy storage (4) by described pressure valve (3).
2. crawler tensioning hydraulic efficiency pressure system according to claim 1, is characterized in that, the outlet of described check valve (2) is communicated with the rodless cavity of described crawler tensioning oil cylinder (1).
3. crawler tensioning hydraulic efficiency pressure system according to claim 1, is characterized in that, described pressure valve (3) is by pass valve.
4. the described crawler tensioning hydraulic efficiency pressure system of according to claim 1-3 any one, is characterized in that, described energy storage (4) also is connected with for the pressure measuring tie-in (5) to described energy storage (4) pressurising.
5. the described crawler tensioning hydraulic efficiency pressure system of according to claim 1-3 any one, is characterized in that, the response pressure of described pressure valve (3) is 200～300 bar.
6. a walking machine, comprise crawler belt, it is characterized in that, also is provided with the described crawler tensioning hydraulic efficiency pressure system of claim 1-5 any one, and described crawler tensioning oil cylinder (1) connects described crawler belt.
7. walking machine according to claim 6, is characterized in that, described walking machine is paver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203021212U CN203294219U (en) | 2013-05-29 | 2013-05-29 | Track tensioning hydraulic system and walking machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203021212U CN203294219U (en) | 2013-05-29 | 2013-05-29 | Track tensioning hydraulic system and walking machinery |
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| Publication Number | Publication Date |
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| CN203294219U true CN203294219U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203021212U Expired - Lifetime CN203294219U (en) | 2013-05-29 | 2013-05-29 | Track tensioning hydraulic system and walking machinery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594567A (en) * | 2019-10-09 | 2019-12-20 | 山东国能实业有限公司 | Oil injection valve for tensioning device |
| CN110843903A (en) * | 2019-11-06 | 2020-02-28 | 重庆长安工业(集团)有限责任公司 | Unmanned vehicle distributing type all-wheel steering device |
| CN111516769A (en) * | 2020-05-12 | 2020-08-11 | 三一重机有限公司 | Crawler tensioning device and crawler type engineering machinery |
| CN112550503A (en) * | 2020-11-18 | 2021-03-26 | 徐工集团工程机械有限公司 | Integrated oil-gas tensioning system for high-speed rubber track assembly and working method |
| CN113738709A (en) * | 2021-08-25 | 2021-12-03 | 湖南三一中益机械有限公司 | Tensioning hydraulic system, traveling machine, and crawler tensioning method for traveling machine |
-
2013
- 2013-05-29 CN CN2013203021212U patent/CN203294219U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594567A (en) * | 2019-10-09 | 2019-12-20 | 山东国能实业有限公司 | Oil injection valve for tensioning device |
| CN110843903A (en) * | 2019-11-06 | 2020-02-28 | 重庆长安工业(集团)有限责任公司 | Unmanned vehicle distributing type all-wheel steering device |
| CN111516769A (en) * | 2020-05-12 | 2020-08-11 | 三一重机有限公司 | Crawler tensioning device and crawler type engineering machinery |
| CN111516769B (en) * | 2020-05-12 | 2023-11-17 | 三一重机有限公司 | Track tensioning device and track type engineering machinery |
| CN112550503A (en) * | 2020-11-18 | 2021-03-26 | 徐工集团工程机械有限公司 | Integrated oil-gas tensioning system for high-speed rubber track assembly and working method |
| CN113738709A (en) * | 2021-08-25 | 2021-12-03 | 湖南三一中益机械有限公司 | Tensioning hydraulic system, traveling machine, and crawler tensioning method for traveling machine |
| CN113738709B (en) * | 2021-08-25 | 2024-01-23 | 湖南三一中益机械有限公司 | Tensioning hydraulic system, running machine and track tensioning method of running machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |