CN203348522U - Small-size hydraulic gear shifting operating valve with cushion function - Google Patents
Small-size hydraulic gear shifting operating valve with cushion function Download PDFInfo
- Publication number
- CN203348522U CN203348522U CN 201320397554 CN201320397554U CN203348522U CN 203348522 U CN203348522 U CN 203348522U CN 201320397554 CN201320397554 CN 201320397554 CN 201320397554 U CN201320397554 U CN 201320397554U CN 203348522 U CN203348522 U CN 203348522U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- valve rod
- valve body
- small
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- 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
Links
- 230000003139 buffering effect Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000011176 pooling Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 17
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model discloses a small-size hydraulic gear shifting operating valve with a cushion function. The small-size hydraulic gear shifting operating valve comprises an upper valve body and a lower valve body which are fixedly connected through bolts, a valve rod I and a valve rod II are arranged in the upper valve body, positioning steel balls, retaining springs and positioning screwed plugs are successively arranged on outer sides of the middles of the valve rod I and the valve rod II inside-out respectively, a shuttle valve core, a return valve core, a cushion valve core and a shut-off valve core are mounted in the lower valve body, a cushioning spring is disposed at a connecting position of the return valve core and the cushion valve core, a shut-off control valve assembly is disposed at the rear end of the shut-off valve core, and a disconnecting spring is disposed at the front end of the shut-off valve core. The small-size hydraulic gear shifting operating valve with the cushion function is simple in structure and convenient to use, and technical problems that hydraulic circuit cutting off during gear shifting and braking is instable and impact of shifting exists in prior art are solved.
Description
technical fieldthe utility model belongs to the construction machinery gear box technical field, relates to a kind of small-sized fluid power shift speed change control valve with pooling feature.
technical backgroundconstruction machinery industry is one of requisite equipment manufacture of development of the national economy cause, and machinery industry is for a long time as the pillar industry of China, in national economy in occupation of consequence.Fast development along with China's economy since the nineties in last century, the construction machinery production industry as the important ring in the machinery industry industrial chain also thereupon flourish especially recent years China's national policy to the support of machinery industry, continue to increase the investment to machinery industry, make the sector step into the phase of developing by leaps and bounds.China's construction machinery industry, through development for many years, with regard to its output, has been now universally acknowledged big country, but China is not also power.It is the supporting tasks of all kinds of engineering machinery main frames that engineering machinery auxiliary equipment industry is being undertaken, and the core technology of main frame concentrates on auxiliary equipment.Therefore, the development of auxiliary equipment has been subject to the concern that industry is general.Also can say, can China become engineering machinery power, and auxiliary equipment is crucial.Along with the fast development of China's machinery industry, the market of engineering machinery auxiliary equipment enlarges rapidly, and development prospect is wide.Simultaneously, construction machinery industry has proposed more and more higher requirement to product variety and the quality of auxiliary products.Development along with technology, the impact of engineering machinery gearshift moment becomes the important topic of engineering machinery research, all solving by every means the technical problem that the cut-out of gearshift brake hydraulic oil circuit is unstable and gearshift is impacted both at home and abroad, the utility model is a speed change operating valve that cuts off exploitation for solution gearshift brake hydraulic oil circuit.
summary of the inventionthe purpose of this utility model is to solve prior art to exist gearshift brake hydraulic oil circuit to cut off technical problem unstable and that gearshift is impacted, and a kind of small-sized fluid power shift speed change control valve with pooling feature is provided.
A kind of small-sized fluid power shift speed change control valve with pooling feature of the utility model, it comprises upper and lower valve body, described upper and lower valve body is bolted connection; Its main points are to be provided with valve rod in described upper valve body
and valve rod
, described valve rod
and valve rod
the outside at middle part is provided with respectively locking ball, retaining spring and location plug from inside to outside successively; Be provided with the shuttle valve core in described lower valve body, return spool, cushion spool and cut off spool, the joint of described return spool and buffering spool is provided with damping spring, the rear end of described cut-out spool is provided with the cutting-off controlling valve assembly, and the front end that cuts off spool is provided with the cut-out spring.
Described valve rod
and valve rod
rear end be respectively equipped with the oil sealing be tightly connected with upper valve body, valve rod
and valve rod
front end be respectively equipped with the plug be tightly connected with upper valve body.
The two ends of described shuttle valve core are respectively equipped with the plug be connected with lower valve seal, the rear end of described return spool is respectively equipped with the front end of buffering spool the plug be connected with lower valve seal, and the cut-out spring of described cut-out spool front end is provided with the plug be connected with lower valve seal.
The utility model structure order, easy to use, pass through valve rod
with locking ball, upper valve body oil duct, coordinate can realize with 1, N, 2 gears switchings, valve rod
coordinate with locking ball, upper valve body oil duct and can realize F, N, the switching of R gear, oil sealing, plug play seal action; Shuttle valve core in lower valve body can be controlled the effect that enters speed change box clutch bag hydraulic oil, cuts off spring and can promote to cut off valve core reset, and the oil circuit that enters gear is unimpeded, and the buffering spool plays buffer function, while avoiding vehicle shift, produces and impacts.The utility model has solved prior art and has existed gearshift brake hydraulic oil circuit to cut off technical problem unstable and that gearshift is impacted.
the accompanying drawing explanationfig. 1 is the utility model plan view;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 be in Fig. 1 A-A to sectional view;
Fig. 4 be in Fig. 1 B-B to sectional view.
In figure 1, upper valve body 2, lower valve body 3, bolt 4, valve rod
5, valve rod
6, locking ball 7, retaining spring 8, location plug 9, shuttle valve core 10, return spool 11, buffering spool 12, cut-out spool 13, damping spring 14, cutting-off controlling valve assembly 15, cut-out spring 16, oil sealing 17, plug 18, plug 19, plug 20, plug
embodimentwith reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it comprises upper and lower valve body 1,2 the utility model, and described upper and lower valve body is fixedly connected with by bolt 3; Be provided with valve rod in described upper valve body 1
4 and valve rod
5, described valve rod
and valve rod
the outside at middle part is provided with respectively locking ball 6, retaining spring 7 and location plug 8 from inside to outside successively; Be provided with shuttle valve core 9 in described lower valve body 2, return spool 10, cushion spool 11 and cut off spool 12, the joint of described return spool 10 and buffering spool 11 is provided with damping spring 13, the rear end of described cut-out spool 12 is provided with cutting-off controlling valve assembly 14, and the front end that cuts off spool 12 is provided with and cuts off spring 15; Described valve rod
and valve rod
rear end be respectively equipped with the oil sealing 16 be tightly connected with upper valve body, valve rod
and valve rod
front end be respectively equipped with the plug 17 be tightly connected with upper valve body; The two ends of described shuttle valve core 9 are respectively equipped with the plug 18 be connected with lower valve seal, the rear end of described return spool 10 is respectively equipped with the front end of buffering spool 11 plug 19 be connected with lower valve seal, and the cut-out spring 15 of described cut-out spool 12 front ends is provided with the plug 20 be connected with lower valve seal.
The utility model function and working principle:
1, the shuttle valve core plays and controls the effect that enters speed change box clutch bag hydraulic oil, works as valve rod
when 1 gear is put, the shuttle valve core cuts off the oil circuit that enters gearbox 2 gears, keeps 1 gear oil circuit unimpeded; Work as valve rod
when 2 gears are put, the shuttle valve core cuts off the oil circuit that enters gearbox 1 gear, keeps 2 gear oil circuits unimpeded;
2, cutting function: when touching on the brake, brake oil enters the cutting-off controlling valve assembly, and the cutting-off controlling valve assembly promotes to cut off spool and moves, thereby cuts off the oil circuit that enters gear; After driver's releasing of brake, brake oil is converged in the oil conservator on loader, at this moment cuts off spring and promotes to cut off valve core reset, and the oil circuit that enters gear is unimpeded;
3, pooling feature: the clutch pack that hydraulic oil enters a sky when speed change valve is shifted gears, at this moment gear pressure moment reduction, the hydraulic oil that the buffering spool will cushion in oil pocket is discharged by one-way throttle valve, return spool moves the hydraulic circuit that enters gear is closed to buffering spool direction under the effect of high pressure liquid force feed, along with the hydraulic fluid pressure in valve raises, hydraulic oil enters in the buffering oil pocket and promotes the buffering spool and move forward into and promote return spool and move by the throttling pore on valve body, the oil circuit that enters gear is opened and then is made the normal oil-feed of gear, this process plays buffer function, produce and impact while avoiding vehicle shift, often changing once gear just once cushions.
Annotate: F is the abbreviation of forward gear, and R is the abbreviation that falls back and keep off, and N is the abbreviation of neutral.
Claims (3)
1. the small-sized fluid power shift speed change control valve with pooling feature, it comprises upper and lower valve body, described upper and lower valve body is bolted connection; It is characterized in that being provided with valve rod in described upper valve body
and valve rod
, described valve rod
and valve rod
the outside at middle part is provided with respectively locking ball, retaining spring and location plug from inside to outside successively; Be provided with the shuttle valve core in described lower valve body, return spool, cushion spool and cut off spool, the joint of described return spool and buffering spool is provided with damping spring, the rear end of described cut-out spool is provided with the cutting-off controlling valve assembly, and the front end that cuts off spool is provided with the cut-out spring.
2. a kind of small-sized fluid power shift speed change control valve with pooling feature according to claim 1, is characterized in that described valve rod
and valve rod
rear end be respectively equipped with the oil sealing be tightly connected with upper valve body, valve rod
and valve rod
front end be respectively equipped with the plug be tightly connected with upper valve body.
3. a kind of small-sized fluid power shift speed change control valve with pooling feature according to claim 1, the two ends that it is characterized in that described shuttle valve core are respectively equipped with the plug be connected with lower valve seal, the rear end of described return spool is respectively equipped with the front end of buffering spool the plug be connected with lower valve seal, and the cut-out spring of described cut-out spool front end is provided with the plug be connected with lower valve seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320397554 CN203348522U (en) | 2013-07-04 | 2013-07-04 | Small-size hydraulic gear shifting operating valve with cushion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320397554 CN203348522U (en) | 2013-07-04 | 2013-07-04 | Small-size hydraulic gear shifting operating valve with cushion function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348522U true CN203348522U (en) | 2013-12-18 |
Family
ID=49748427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320397554 Expired - Fee Related CN203348522U (en) | 2013-07-04 | 2013-07-04 | Small-size hydraulic gear shifting operating valve with cushion function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348522U (en) |
-
2013
- 2013-07-04 CN CN 201320397554 patent/CN203348522U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20170704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |