CN2885941Y - Positioning device for hand-operated decompression type forerunner proportional control valve - Google Patents
Positioning device for hand-operated decompression type forerunner proportional control valve Download PDFInfo
- Publication number
- CN2885941Y CN2885941Y CN 200520036083 CN200520036083U CN2885941Y CN 2885941 Y CN2885941 Y CN 2885941Y CN 200520036083 CN200520036083 CN 200520036083 CN 200520036083 U CN200520036083 U CN 200520036083U CN 2885941 Y CN2885941 Y CN 2885941Y
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- elastic jacket
- control valve
- bulb
- spherical bar
- jacket
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Abstract
The utility model discloses a location device of the manual decompression proportional pilot control valve, comprising an elastic jacket and a connecting rod with a spherical rod. The elastic jacket is provided with a plurality of longitudinal slots, lead-in conical faces and backstop necks, and a position-checking bulb is provided on the bottom of the spherical rod. The position-checking bulb can be pushed down to the elasticity jacket by the action of external force, thereby achieving the mechanical location. The utility model has the characteristics of simple structure, easy processing, convenient adjustment and maintaining. Obvious hand handle can be generated during the operating process, and the location is accurate and reliable.
Description
Technical field
The utility model relates to a kind of positioner that is applied to the manual decompression type proportion pilot control valve on the engineering machinery.
Background technology
At present at engineering machinery, as bulldozer, excavator, extensively employing is controlled main control valve by manual guide proportion valve and is controlled this special operation condition of shovel, in order accurately to finish this special operation condition, the operator requires when handling the proportion pilot control valve, fall to entering at perching knife and produce obvious feel before floating, can reliably locate after putting in place and float.At present, widely used proportion pilot control valve all adopts the valve inner at the proportion pilot control valve that complicated oil circuit is set, and utilizes pressure oil to act on the compression face generation power and reaches feel and location purpose are arranged; Also have in addition to adopt electromagnet is set, when putting in place, locate, increase by a spring simultaneously at the back-moving spring place and adjust to and obvious feel is arranged before floating by electromagnet.But because above two complex structures, difficulty of processing is big, and its reset force is difficult to control, causes misoperation easily, inconvenient maintenance causes various product quality defects because complicated structure makes simultaneously.
The utility model content
The purpose of this utility model provide a kind of simple in structure, be easy to process, adjusting and easy to maintenance, can produce obvious feel, the accurate positioning manual positioner of decompression type proportion pilot control valve reliably.
For achieving the above object, the positioner of manual decompression type proportion pilot control valve of the present utility model, comprise with the elastic jacket of the supporting setting of working oil path and be connected with spherical bar, and be provided with the connecting rod of screw thread, they all are arranged on around the plunger of working oil path, described elastic jacket is the steel cylinder that the top has several cannelures, therefore the top can be stretched and produce elasticity, and elastic jacket is provided with successively from top to bottom and imports the conical surface and retaining eck, elastic jacket can by the welding or riveted and fixed on the valve seat at corresponding working oil path place, the described connecting rod that is connected with spherical bar is installed on the butterfly dish of control valve by screw thread and locking nut, the position is corresponding with supporting elastic jacket, the bottom of spherical bar is provided with the screens bulb, the maximum gauge of bulb is less than the internal diameter of elastic jacket, internal diameter greater than the retaining eck, and the diameter of bulb end is less than the maximum gauge of bulb, and after being convenient to operate, bulb withdraws from from elastic jacket.
The course of work of the present utility model is: when the operator rotates control stick, drive the butterfly dish of control valve, thereby drivening rod and spherical bar tilt to the working oil path that is provided with positioner, by setting the length of spherical bar, the position of regulating connecting rod can allow spherical bar rigidly connect when touching elastic jacket, the butterfly dish just in time is pressed onto and will enters unsteady position by the spool of plunger with the proportion pilot control valve, at this moment, elastic jacket produces reaction force to spherical bar again, thereby make the operator produce feel, know that perching knife will arrive the operating position of floating, when enforcing control crank again, elastic jacket is big by the support of the bulb of spherical bar, bulb enters the elastic jacket endoporus along importing the conical surface, move on to the below of the retaining eck of elastic jacket when bulb, at this moment the butterfly dish just in time is pressed onto the floating position by plunger with the control spool of control valve, at this moment the elastic force of elastic jacket makes the elastic jacket endoporus return to normal size, stop the front end bulb of spherical bar to withdraw from automatically, overcome the control spool, the upwards thrust that back-moving spring and hydraulic coupling apply plunger, thus realize mechanical positioning accurately.
As further improvement of the utility model, described spherical bar is installed on the connecting rod by screw thread and locking nut, when bulb produces wearing and tearing or spherical bar generation positioning, can regulate the upper-lower position of bulb.
In sum, the positioner of manual decompression type proportion pilot control valve of the present utility model, have simple in structure, be easy to process, adjusting and characteristics easy to maintenance, in manipulation process, can produce obvious feel, accurate positioning is reliable.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the front view of the utility model embodiment.
Fig. 2 is the front view of elastic jacket.
Fig. 3 is the sectional view of Fig. 2.
Fig. 4 is the vertical view of Fig. 2.
Fig. 5 is the front view of spherical bar.
The specific embodiment
By shown in Figure 1, the positioner of the manual decompression type proportion pilot control valve of the utility model embodiment is arranged on the manual decompression type proportion pilot control valve with two working oil path, control valve comprises by two crossed cylinders and is articulated in control stick 7 on the valve seat 1, butterfly dish 6, be installed in the plunger 5 in each working oil path, control spool 2, back-moving spring 3, relief spring 4, and oil-in 15, oil return opening 16, actuator port 17 etc., this is all prior art, working oil path in the control valve left side is provided with positioner, it comprises the elastic jacket 10 of steel and is positioned at its top, the connecting rod 13 that has spherical bar 11, wherein, elastic jacket 10 is welded on the base plate 9 that is installed on valve seat 1, connecting rod 13 is installed on the butterfly dish 6 by screw thread and locking nut 14, spherical bar 11 is by on screw thread and locking nut 12 installing connecting rods 13, as Fig. 2, Fig. 3, shown in Figure 4, the top of elastic jacket 10 is uniform to have four cannelures 18, and elastic jacket 10 is provided with successively from top to bottom and imports the conical surface 19 and retaining eck 20, as shown in Figure 5, the bottom of spherical bar 11 is the screens bulb, the maximum gauge of bulb is less than the internal diameter of elastic jacket 10, greater than the internal diameter of retaining eck, the diameter of bulb end is less than the maximum gauge of bulb; Elastic jacket 10, connecting rod 13 are corresponding with the position of plunger 5, by the length of setting spherical bar 11, the position of regulating connecting rod 13, turn left when promoting control stick 7, spherical bar 11 rigidly connects when touching elastic jacket 10, butterfly dish 6 just in time will be controlled spool 2 by plunger 5 and be pressed onto and be about to enter unsteady position, and this state is easy to realize.
The operating principle of the utility model embodiment is as follows:
Under static state, control stick 7 keeps meta by two back-moving springs 3, and oil-in 15 communicates with oil return opening 16 by the oil duct of control spool 2.During work, when promoting control stick 7, the operator rotates to the left, drive spherical bar 11 and rotate thereupon by butterfly dish 6, connecting rod 13, when the elastic jacket 10 below spherical bar 11 contacts, 10 pairs of spherical bars 11 of elastic jacket produce reaction force, thereby make the operator produce feel, know that perching knife will arrive the operating position of floating, butterfly dish 6 just in time will be controlled spool 2 by plunger 5 and be pressed onto and will enter unsteady position this moment.When enforcing control crank again, elastic jacket 10 is big by the support of the bulb of spherical bar 11, spherical bar 11 enters the endoporus of elastic jacket 10, the bulb of spherical bar 11 moves on to retaining eck 20 belows of elastic jacket 10, at this moment butterfly dish 6 just in time will be controlled spool 2 by plunger 5 and be pressed onto the floating position, at this moment the elastic force of elastic jacket 10 makes elastic jacket 10 endoporus return to normal size, retaining eck 20 stops spherical bar 11 lower end bulbs to withdraw from automatically, overcome control spool 2, the upwards thrust that back-moving spring 3 and hydraulic coupling apply plunger 5, thereby realization mechanical positioning, when this process is carried out, plunger 5 is depressed and heads on back-moving spring 3 and relief spring 4, relief spring 4 promotes control spool 2 downwards, and close being connected of oil-in 15 and oil return opening 16, connect oil-in 15 and actuator port 17 simultaneously, in case when control spool 2 was in balance between relief spring 4 and oil-in 15 hydraulic couplings, the closed-loop control stage began.After the closed-loop control stage finishes, by manual operation, bulb is withdrawed from from elastic jacket 10, control stick 7 resets.
Positioner of the present utility model can be arranged on one or several working oil path of control valve according to user's needs, and the big I of detent force is by changing the neck size adjustment of ball size, shape and elastic jacket retaining eck.
Claims (2)
1. the positioner of a manual decompression type proportion pilot control valve, it is characterized in that this positioner comprises with the elastic jacket of the supporting setting of working oil path and is connected with spherical bar, and be provided with the connecting rod of screw thread, described elastic jacket is the cylinder that the top has several cannelures, and elastic jacket is provided with successively from top to bottom and imports the conical surface and retaining eck, elastic jacket is fixed on the valve seat at corresponding working oil path place, the described connecting rod that is connected with spherical bar is installed on the butterfly dish of control valve by screw thread and locking nut, the position is corresponding with supporting elastic jacket, the bottom of spherical bar is provided with the screens bulb, the maximum gauge of bulb is less than the internal diameter of elastic jacket, greater than the internal diameter of retaining eck, and the diameter of bulb end is less than the maximum gauge of bulb.
2. the positioner of manual decompression type proportion pilot control valve according to claim 1 is characterized in that described spherical bar is by on screw thread and the locking nut installing connecting rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036083 CN2885941Y (en) | 2005-11-10 | 2005-11-10 | Positioning device for hand-operated decompression type forerunner proportional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036083 CN2885941Y (en) | 2005-11-10 | 2005-11-10 | Positioning device for hand-operated decompression type forerunner proportional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2885941Y true CN2885941Y (en) | 2007-04-04 |
Family
ID=37961031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520036083 Expired - Fee Related CN2885941Y (en) | 2005-11-10 | 2005-11-10 | Positioning device for hand-operated decompression type forerunner proportional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2885941Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846111A (en) * | 2010-06-10 | 2010-09-29 | 江苏鼎晟液压有限公司 | Pilot proportional multi-path reversing valve |
| CN104343142A (en) * | 2013-08-07 | 2015-02-11 | 卡特彼勒公司 | Control device for controlling pilot control valve and bulldozer comprising control device |
| CN106106030A (en) * | 2016-08-17 | 2016-11-16 | 恒天九五重工有限公司 | A kind of tree mover of Hydraulic guide control |
-
2005
- 2005-11-10 CN CN 200520036083 patent/CN2885941Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846111A (en) * | 2010-06-10 | 2010-09-29 | 江苏鼎晟液压有限公司 | Pilot proportional multi-path reversing valve |
| CN104343142A (en) * | 2013-08-07 | 2015-02-11 | 卡特彼勒公司 | Control device for controlling pilot control valve and bulldozer comprising control device |
| CN104343142B (en) * | 2013-08-07 | 2018-02-23 | 卡特彼勒公司 | For controlling the manipulation device of pilot-actuated valve and bull-dozer including manipulation device |
| CN106106030A (en) * | 2016-08-17 | 2016-11-16 | 恒天九五重工有限公司 | A kind of tree mover of Hydraulic guide control |
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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: 20070404 Termination date: 20141110 |
|
| EXPY | Termination of patent right or utility model |