CN203176032U - Inching valve structure of forklift pilot valve - Google Patents
Inching valve structure of forklift pilot valve Download PDFInfo
- Publication number
- CN203176032U CN203176032U CN 201320062684 CN201320062684U CN203176032U CN 203176032 U CN203176032 U CN 203176032U CN 201320062684 CN201320062684 CN 201320062684 CN 201320062684 U CN201320062684 U CN 201320062684U CN 203176032 U CN203176032 U CN 203176032U
- Authority
- CN
- China
- Prior art keywords
- valve
- inching
- control valve
- valve body
- spring
- Prior art date
- 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 - Lifetime
Links
Images
Abstract
The utility model provides an inching valve structure of a forklift pilot valve, and belongs to the technical field of forklift pilot valves. The inching valve structure of the forklift pilot valve comprises a pilot valve body and an inching valve rod which is arranged inside the pilot valve body in a matched mode, a spring I is arranged between the pilot valve body and the inching valve rod, a piston, a slide valve and a check ring are arranged on the inching valve rod from left to right in sequence, the spring I is arranged between the left end of an inner cavity of he pilot valve body and the piston, a spring II is arranged between the slide valve and the pilot valve body, and the check ring is arranged between the right end of the inner cavity of the pilot valve body and the inching valve rod. According to the inching valve structure of the forklift pilot valve, the piston, the slide valve and the check ring are arranged on the inching valve rod and used for conducting positioning on the inching valve rod, the spring between the slide valve and the inching valve rod is moved to the outer circle of the slide valve and arranged between the pilot valve body and the inching valve rod so that the slide valve is in close fit with the inching valve rod, the guide length of the inner circle of the slide valve is extended, the contact area of the outer circle is reduced, requirements of parts, such as the slide valve, for coaxiality are greatly reduced, requirements for machining accuracy and machining equipment of the parts are reduced, and economic performance is improved.
Description
Technical field
The utility model belongs to fork truck control valve technical field, is specifically related to a kind of inching valve structure of simple in structure, easily manufactured fork truck control valve.
Background technique
Fork truck control valve structure in the market all is to copy state's external operating valve structure fully.Yet because external process equipment and technology are all more advanced, machining accuracy to component is controlled all than higher, but domestic process equipment and technology are far advanced unlike peripheral, can't reach requirement when particularly producing in batches, greatly reduce the up-to-standard rate of product, influence the use of fork truck, if therefore can under the prerequisite that does not change the fretting performance curve, change current structure, the fork truck control valve is got a desired effect, and is a great research topic.
Summary of the invention
At the above-mentioned problems in the prior art, the purpose of this utility model is to provide a kind of inching valve structure of simple in structure, easily manufactured fork truck control valve.
The inching valve structure of described a kind of fork truck control valve, comprise control valve valve body and the fine motion valve rod that is equipped with at the control valve body cavity, between control valve valve body and the fine motion valve rod spring I is set, it is characterized in that from left to right setting gradually piston on the described fine motion valve rod, guiding valve and back-up ring, described spring I is arranged between control valve body cavity left end and the piston, between described guiding valve and the control valve valve body spring II is set, described back-up ring is arranged between control valve body cavity right-hand member and the fine motion valve rod, and hydraulic fluid port P is set in the control valve valve body, oil return inlet T and filler opening.
The inching valve structure of described a kind of fork truck control valve is characterized in that described piston two ends are provided for the catch of fixed piston.
The inching valve structure of described a kind of fork truck control valve is characterized in that described spring II left side arranges pad.
The inching valve structure of above-mentioned a kind of fork truck control valve, comprise control valve valve body and the fine motion valve rod that is equipped with at the control valve body cavity, between control valve valve body and the fine motion valve rod spring I is set, from left to right set gradually piston, guiding valve and back-up ring on the fine motion valve rod, described spring I is arranged between control valve body cavity left end and the piston, between described guiding valve and the control valve valve body spring II is set, described back-up ring is arranged between control valve body cavity right-hand member and the fine motion valve rod, and hydraulic fluid port P, return opening and filler opening are set in the control valve valve body.The utility model is by adopting above-mentioned technology, at the fine motion valve rod piston is set, guiding valve and back-up ring, be used for location fine motion valve rod, make it be in meta, and the spring between guiding valve and the fine motion valve rod is moved to the outer ring of guiding valve, be arranged between control valve valve body and the fine motion valve rod, guiding valve and fine motion valve rod are closely cooperated, improve the guiding length of guiding valve inner ring, and minimizing outer ring area of contact, greatly reduce the requirement to coaxalitys such as guiding valves, reduced the machining accuracy of part and the requirement of process equipment, it is simple in structure, easy to operate, steering force reduces about 30 ﹪～50 ﹪ than original, the valve rod catching phenomenon is eliminated substantially, and the off-load characteristic curve as before, increases economic efficiency.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1-spring I, 2-control valve valve body, 3-catch, 4-pad, 5-spring II, 6-fine motion valve rod, 7-back-up ring, 8-guiding valve, 9-piston.
Embodiment
The utility model will be further described below in conjunction with Figure of description:
As shown in Figure 1, a kind of inching valve structure of fork truck control valve, comprise control valve valve body 2 and the fine motion valve rod 6 that is equipped with at control valve valve body 2 inner chambers, between control valve valve body 2 and the fine motion valve rod 6 spring I 1 is set, from left to right set gradually piston 9 on the described fine motion valve rod 6, guiding valve 8 and back-up ring 7, piston 9 two ends are provided for the catch 3 of fixed piston 9, between the catch 3 on piston 9 right sides and spring II 5 left sides pad 4 is set, the left end that is used for fixing spring II 5, described spring I 1 is arranged between control valve valve body 2 inner chamber left ends and the piston 9, between described guiding valve 8 and the control valve valve body 2 spring II 5 is set, described back-up ring 7 is arranged between control valve valve body 2 inner chamber right-hand members and the fine motion valve rod 6, and hydraulic fluid port P is set in the control valve valve body 2, oil return inlet T and oil inlet P 1.
As shown in the figure, the working principle of inching valve of the present utility model is: when the control valve proper functioning, the oil of hydraulic fluid port P goes to the gear of clutch, when clutch does not need work, the oil of hydraulic fluid port P advances the back from oval-shaped oil return inlet T oil return by fine motion valve rod 6, in the whole process, concerning control valve valve body 2, piston 9, guiding valve 8 and back-up ring 7 threes' cylindrical must be coaxial, its endoporus is also coaxial with cylindrical, could guarantee that fine motion valve rod 6 is in the neutral position of control valve valve body 2, avoid dislocation to cause catching phenomenon, influence is used.The utility model is under the constant situation of off-load stroke and spring force, with spring II 5 displacements that are in originally between guiding valve 8 and the fine motion valve rod 6, make spring II 5 be positioned at guiding valve 8 outer rings, between guiding valve 8 and control valve valve body 2, guiding valve 8 inner rings and fine motion valve rod 6 are directly closely cooperated, increased the length of guiding valve 8 inner rings guiding, reduce the outer ring area of contact, greatly reduce the requirement to the part coaxality, thereby the machining accuracy that has reduced guiding valve 8 parts such as grade reaches the requirement to process equipment, and it is simple in structure, easy to operate, steering force reduces about 30 ﹪～50 ﹪ than original, the valve rod catching phenomenon is eliminated substantially, and the off-load characteristic curve as before.
Claims (3)
1. the inching valve structure of a fork truck control valve, comprise control valve valve body (2) and be equipped with fine motion valve rod (6) at control valve valve body (2) inner chamber, between control valve valve body (2) and the fine motion valve rod (6) spring I (1) is set, it is characterized in that from left to right setting gradually on the described fine motion valve rod (6) piston (9), guiding valve (8) and back-up ring (7), described spring I (1) is arranged between control valve valve body (2) inner chamber left end and the piston (9), between described guiding valve (8) and the control valve valve body (2) spring II (5) is set, described back-up ring (7) is arranged between control valve valve body (2) inner chamber right-hand member and the fine motion valve rod (6), and the control valve valve body arranges hydraulic fluid port P in (2), oil return inlet T and oil inlet P 1.
2. the inching valve structure of a kind of fork truck control valve according to claim 1 is characterized in that described piston (9) two ends are provided for the catch (3) of fixed piston (9).
3. the inching valve structure of a kind of fork truck control valve according to claim 1 is characterized in that described spring II (5) left side arranges pad (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062684 CN203176032U (en) | 2013-02-04 | 2013-02-04 | Inching valve structure of forklift pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062684 CN203176032U (en) | 2013-02-04 | 2013-02-04 | Inching valve structure of forklift pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176032U true CN203176032U (en) | 2013-09-04 |
Family
ID=49072735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320062684 Expired - Lifetime CN203176032U (en) | 2013-02-04 | 2013-02-04 | Inching valve structure of forklift pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674525A (en) * | 2013-12-03 | 2014-03-26 | 合肥今典机械科技有限公司 | Assistive device assembly for inching valve assembly |
-
2013
- 2013-02-04 CN CN 201320062684 patent/CN203176032U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674525A (en) * | 2013-12-03 | 2014-03-26 | 合肥今典机械科技有限公司 | Assistive device assembly for inching valve assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101560998B (en) | Self-control positioning bidirectional hydraulic change-over valve | |
| CN203114778U (en) | Built-in type automatic reversing oil cylinder | |
| WO2015102770A3 (en) | Magnetorheological fluid locking system | |
| CN103085865A (en) | Load sensitive turning hydraulic system of loading machine | |
| GB2540253A (en) | Multiple piston assembly for safety valve | |
| CN203412858U (en) | Flushing valve for hydraulic motor of closed system | |
| CN105090141A (en) | Hydraulic variable control system and vehicle | |
| CN203176032U (en) | Inching valve structure of forklift pilot valve | |
| CN204140858U (en) | A kind of noise reduction hydraulic piston assembly | |
| CN105317776B (en) | A kind of hydraulic cylinder and the control device with the hydraulic cylinder | |
| CN203176467U (en) | Direct-acting type overflow valve | |
| CN103452956B (en) | A kind of oil hydraulic cylinder | |
| CN102367818A (en) | Special integrated group valve for electrohydraulic push rod | |
| CN104061198A (en) | Double-pump oil supply fast-control system | |
| CN203285900U (en) | Adjustable shock absorber | |
| WO2008012704A3 (en) | Hydropneumatic regenerative actuator | |
| CN203248426U (en) | Fast differential circuit | |
| CN102562917B (en) | Main-control hydraulic damper | |
| CN103437971A (en) | Swash-plate axial plunger pump | |
| CN104712606A (en) | Multi-direction hydraulic control system of machine tool | |
| CN204201180U (en) | A kind of leading type multifunctional electromagnetic valves | |
| CN203476625U (en) | Inclined disc type axial plunger pump | |
| CN202561222U (en) | Hydraulic-control one-way valve with controllable-size valve port | |
| CN201324916Y (en) | Hydraulic safety locking mechanism of conveying system | |
| CN202914704U (en) | Hydraulic three-position shift mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
|
| CX01 | Expiry of patent term |