CN203147008U - Link plate coordinated type reversing valve - Google Patents
Link plate coordinated type reversing valve Download PDFInfo
- Publication number
- CN203147008U CN203147008U CN 201320164928 CN201320164928U CN203147008U CN 203147008 U CN203147008 U CN 203147008U CN 201320164928 CN201320164928 CN 201320164928 CN 201320164928 U CN201320164928 U CN 201320164928U CN 203147008 U CN203147008 U CN 203147008U
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- CN
- China
- Prior art keywords
- valve
- valve body
- handlebar
- carrier bar
- link plate
- 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
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Abstract
The utility model discloses a link plate coordinated type reversing valve which comprise a valve body, wherein an end cap is arranged at one end of the valve body, and an operating connecting structure is arranged at the other end of the valve body. The link plate coordinated type reversing valve is characterized in that the operating connecting structure comprises a pull rod support and a handle rod, the handle rod is connected with a valve core of the reversing valve through a cylindrical pin, the pull rod support is fixed on the valve body through a plurality of screws, and the lower end of the handle rod is connected with the pull rod support through a link plate. The link plate coordinated type reversing valve has the advantages of being compact in design, simple, light, handy, attractive in appearance, concise, elegant, convenient to operate, safe, reliable, little in abrasion and durable.
Description
Technical field
The utility model relates to one of HYDRAULIC CONTROL SYSTEM executive component, specifically be to come real oil hydraulic cylinder to carry out lifting for the commutation of hydraulic system control oil duct, in stop, descend the carrier bar linking type selector valve of slow degradation function.
Background technique
Valve is a kind of control unit commonly used in the hydraulic control system, and wide in variety, wide application, hand-operated direction valve are one of them kinds, mainly are to utilize handle to pass through connecting rod directly to promote main valve plug work.Manual control linkage structure in the existing hand-operated direction valve is fairly simple, but in the operating process, stress is not fine, is easy to cause a rod bending; Each tie point frictional force is excessive, and particularly the straight pin that is connected with mandrel of handle is to slide in the oval groove of handle (rigid friction), is easy to cause the wearing and tearing of tie point to accelerate.The wearing and tearing of tie point will inevitably cause the sky pendulum stroke of handlebar to strengthen, and will cause the mandrel mobile position to produce error like this, finally can have influence on the disabler of whole selector valve, greatly reduce the working life of selector valve.Therefore, be necessary that making optimization on the prior art basis improves.
Summary of the invention
The purpose of this utility model is according to the deficiencies in the prior art, provides a kind of solid and reliable, stable performance; And improved the stress of each tie point, reduced wearing and tearing greatly, effectively guaranteed the carrier bar linking type selector valve in working life.
The technical solution of the utility model: described carrier bar linking type selector valve, comprise valve body, be provided with end cap at valve body one end, the other end is provided with the manipulation linkage structure, it is characterized in that: described manipulation linkage structure comprises rob support and handlebar, handlebar is connected with the spool of selector valve by straight pin, and described rob support is fixed on the valve body by a plurality of screws, and the lower end of handlebar is connected with rob support by carrier bar.
The further technological scheme of the utility model: described rob support is that cast inblock forms, and fixedlys connected with valve body by two screws, and the lower end of handlebar is connected with the bottom of rob support by carrier bar.At valve body safety valve is installed, described safety valve is made up of valve gap, spring and needle.Can adjust the size of cracking pressure according to the demand of system.Because the particular design of needle when safety valve is opened, can effectively be gone out the foreign material that stick to valve port, has effectively guaranteed the performance of safety valve.
Described straight pin passes mandrel and is connected with circular hole on the handlebar.
The beneficial effects of the utility model:
1. the utility model structural design compactness is aesthetic in appearance, and is easy to operate, safe and reliable;
2. the utility model is optimized its structure when possessing existing function, improves, and its attachment portion adopts carrier bar to connect, and is applicable to that the manually-operable of various hand-operated direction valves connects;
3. mandrel of the present utility model is connected by straight pin with handlebar, and straight pin punching axle is connected with circular hole on the handlebar, has improved the stress of individual tie point, has reduced wearing and tearing greatly;
4. rob support of the present utility model adopts the cast inblock design, and is solid and reliable, bending can not occur, phenomenons such as fracture.
5. safety valve of the present utility model because the particular design of needle can effectively be dashed except the foreign material that stick to valve port, has better guaranteed the performance of selector valve.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of safety valve in the utility model;
Phase diagram when Fig. 3 is the rising of the utility model driving lifting structure;
Phase diagram when Fig. 4 is the decline of the utility model driving lifting structure;
Among the figure: 1-rob support, 2-chain card, 3-straight pin, 4-mandrel, 5-handle, 6-screw, 7-valve body, 8-end cap, 9-safety valve, 10-valve gap, 11-spring, 12-needle, A-filler opening, P-oil outlet, T-return opening.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.Among Fig. 1, described valve body 7 and the safety valve 9 that is contained on the valve body of comprising, be provided with end cap 8 at valve body one end, the other end is provided with the manipulation linkage structure, it is characterized in that: described manipulation linkage structure comprises rob support 1 and handlebar 5, and handlebar 5 is connected with the spool 4 of selector valve by straight pin 3, described rob support 1 is fixed on the valve body 7 by a plurality of screws 6, rob support 1 is generally fixedlyed connected with valve body 7 by two screws 6 for cast inblock forms, and screw 6 is fixed on the top of rob support 1.The lower end of handlebar 5 is connected with rob support 1 by carrier bar 2, and handlebar 5 adopts carrier bar 2 to be connected with rob support 1, and 3 interlocks will rotatablely move and change straight line motion into, improve stress, reduce wear.
At valve body safety valve 9 is installed, described safety valve 9 is made up of valve gap 10, spring 11 and needle 12.Can adjust the size of cracking pressure according to the demand of system, when system load was increased to above safety pressure, safety valve 10 will be opened, and had effectively protected system element not to be damaged.When safety valve is opened, because the particular design of needle 12, produce eddy current at the valve port place from the high pressure oil of P mouth, effectively dash except the foreign material that stick to valve port.But system pressure recovers just often, and under the effect of spring 11, when needle 12 fell after rise, the more effective fluid that has blocked from the P mouth had effectively guaranteed the normal operation of system.
Described straight pin 3 passes spool 4 and is connected with circular hole on the handlebar 5, the distance adjustment that the position of its tie point can be moved according to spool.Handlebar 5 is with after spool 4 is connected, just with straight pin 3 as initial point, form a lever, when Joystick bar 5 and rob support 1 are connected to form a kind of linking type link rod by carrier bar 2, under the effect of lever principle, promote spool 4 and move as straight line, make spool 4 in valve body 7, carry out the oil duct commutation, realize lifting structure in the hydraulic system rising, decline, in function such as stop.
When adopting selector valve described in the utility model to drive the lifting structure rising, as Fig. 3, Joystick bar 5 is swung left, handlebar 5 is sent to steering force on the spool 4, spool 4 is moving linearly left, makes the oil duct commutation in the valve body 7, and this moment, fluid entered from oil inlet P, flow out from oil outlet A, enter oil cylinder and make oil cylinder carry out lifting work.When adopting selector valve described in the utility model to drive lifting structure decline, as Fig. 4, when Joystick bar 5 is swung to the right, spool 4 is moving linearly to the right, make the oil duct commutation in the valve body 7, the fluid that this moment, oil outlet A flowed out directly is back to fuel tank by oil return inlet T, whole hydraulic system unloading at this moment, and oil cylinder descends.During inoperation handlebar 5, handle in vertical state, as Fig. 1, this moment, spool 4 stopped state in just being in, and directly entered oil sump tank by oil return inlet T from the fluid of oil inlet P, and other misoperation and fault can not take place.
Claims (4)
1. carrier bar linking type selector valve, comprise valve body (7), be provided with end cap (8) at valve body one end, the other end is provided with the manipulation linkage structure, it is characterized in that: described manipulation linkage structure comprises rob support (1) and handlebar (5), handlebar (5) is connected with the spool (4) of selector valve by straight pin (3), and described rob support (1) is fixed on the valve body (7) by a plurality of screws (6), and the lower end of handlebar (5) is connected with rob support (1) by carrier bar (2).
2. carrier bar linking type selector valve according to claim 1, it is characterized in that: described rob support (1) forms for cast inblock, and fixedly connected with valve body (7) by two screws (6), the lower end of handlebar (5) is passed through carrier bar (2) and is connected with the bottom of rob support (1).
3. carrier bar linking type selector valve according to claim 1 and 2, it is characterized in that: at valve body safety valve (9) is installed, described safety valve (9) is made up of valve gap (10), spring (11) and needle (12).
4. carrier bar linking type selector valve according to claim 2 is characterized in that: described straight pin (3) passes mandrel (4) and is connected with circular hole on the handlebar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320164928 CN203147008U (en) | 2013-04-03 | 2013-04-03 | Link plate coordinated type reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320164928 CN203147008U (en) | 2013-04-03 | 2013-04-03 | Link plate coordinated type reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203147008U true CN203147008U (en) | 2013-08-21 |
Family
ID=48974532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320164928 Expired - Lifetime CN203147008U (en) | 2013-04-03 | 2013-04-03 | Link plate coordinated type reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203147008U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240574A (en) * | 2015-11-10 | 2016-01-13 | 山东科技大学 | Proportioning valve with flow regulation function and application thereof |
| CN106089838A (en) * | 2016-08-30 | 2016-11-09 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic oil container plinth |
-
2013
- 2013-04-03 CN CN 201320164928 patent/CN203147008U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240574A (en) * | 2015-11-10 | 2016-01-13 | 山东科技大学 | Proportioning valve with flow regulation function and application thereof |
| CN106089838A (en) * | 2016-08-30 | 2016-11-09 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic oil container plinth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |