CN203413168U - Anti-reversion valve for rotary motor of excavator - Google Patents
Anti-reversion valve for rotary motor of excavator Download PDFInfo
- Publication number
- CN203413168U CN203413168U CN201320491054.3U CN201320491054U CN203413168U CN 203413168 U CN203413168 U CN 203413168U CN 201320491054 U CN201320491054 U CN 201320491054U CN 203413168 U CN203413168 U CN 203413168U
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- valve
- valve pocket
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- plug screw
- spring
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Abstract
The utility mode discloses an anti-reversion valve for a rotary motor of an excavator. The anti-reversion valve is characterized by comprising a valve sleeve, wherein the valve sleeve is internally provided with a valve base; one end of the valve base is in matched connection with a conical surface of a cone valve core, the other end of the cone valve core is connected with one end of a first spring, and the other end of the first spring is connected with an inner hole end surface of the valve sleeve through a spring base; an inner hole of the other end of the valve sleeve is internally provided with a valve core, one end of the valve core is connected with one end of a second spring, and the other end of the second spring is connected with a plug screw; the plug screw is arranged in one end of a motor cover, a first O-shaped ring and a check ring are arranged between the plug screw and the motor cover, one end of the plug screw is in matched connection with the end surface of the valve sleeve, and a second O-shaped ring seal is arranged between the plug screw and a valve sleeve connecting surface. The anti-reversion valve provided by the utility model has the characteristics that the structure is simple, the start and stop property is good, the processing is convenient, the fabricating cost is low and the like.
Description
Technical field
The utility model relates to a kind of hydraulic element, relates in particular to a kind of excavator rotary motor counnter attack rotary valve.
Background technique
Counnter attack rotary valve is an important constituent element in excavator rotary motor, its Main Function is: when rotary motor stops operating, it can prevent the reversion of the motor that the inertia impact due to excavator brings, thereby guarantees that rotary motor can work reposefully.The current deficiency mainly existing for the counnter attack rotary valve of excavator rotary motor has: complex structure, keying property is poor, difficulty of processing is large, manufacture cost is high.
Summary of the invention
The technical problems to be solved in the utility model is: complicated with anti-reverse valve arrangement in order to solve excavator rotary motor, the problem that the large manufacture cost of difficulty of processing is high, provide a kind of simple in structure, open and shut characteristic good, excavator rotary motor easy to process, with low cost counnter attack rotary valve.
In order to solve the problems of the technologies described above, the technical solution of the utility model has been to provide a kind of excavator rotary motor counnter attack rotary valve, it is characterized in that, comprise valve pocket, valve pocket inside is provided with valve seat, one end of valve seat is connected with the cone match of poppet valve core, the other end of poppet valve core is connected with one end of the first spring, the other end of the first spring is connected with hole end surface in valve pocket by spring seat, in the endoporus of the valve pocket the other end, be provided with spool, one end of spool is connected with one end of the second spring, the other end of the second spring is connected with plug screw, plug screw is located in one end of motor cover, between plug screw and motor cover, be provided with O shape circle and a back-up ring, one end of plug screw and the end face of valve pocket are connected, between plug screw and valve pocket junction surface, be provided with the second seal with O ring.
Preferably, described valve pocket respectively the second cylinder by valve pocket and end face and valve seat the first cylinder and step surface be connected, the other end of valve pocket is connected with the end contact of plug screw, plug screw is threaded with motor cover, valve pocket and valve seat are all located in motor cover, and the 3rd cylinder of described poppet valve core and the second cylinder of valve pocket are connected, and the conical surface of poppet valve core and one end of valve seat are connected, form water chestnut linear sealing, the 4th cylinder of described spool and the 5th cylinder of valve pocket are connected.
Preferably, the second cylinder of described valve pocket upside is provided with the first damping hole, and the second cylinder of valve pocket downside is provided with the first oil circuit, and the 5th cylinder of valve pocket downside is provided with the second oil circuit, and the 5th cylinder of valve pocket upside is provided with the 3rd oil circuit.
Preferably, be provided with the first Room between described poppet valve core and valve pocket, the first Room is communicated with the first oil inlet and outlet, the second oil inlet and outlet on motor cover by the second damping hole on spool and the second oil circuit, the 3rd oil circuit.
The utility model is simple and reasonable, part is easy to process, cheap for manufacturing cost, paired mounting is inner in motor cover, the poppet valve core of two counnter attack rotary valves is in contact with one another and is connected by the front end cylinder of front-end face separately, and stability is high, and keying property is good, can help better motor smooth working, thereby promote the stationarity of excavator complete machine.
Accompanying drawing explanation
Fig. 1 is the structural representation of counnter attack rotary valve for a kind of excavator rotary motor.
Description of reference numerals:
1 is motor cover, and 2 is plug screw, and 3 is back-up ring, and 4 is an O shape circle, and 5 is the 2nd O shape circle, 6 is valve pocket, and 7 is the second spring, and 8 is spool, and 9 is spring seat, 10 is the first spring, and 11 is poppet valve core, and 12 is valve seat, and A is the first oil inlet and outlet, B is the second oil inlet and outlet, and C is the first damping hole, and D is the second damping hole, and E is the first oil circuit, F is the second oil circuit, and G is the 3rd oil circuit, and H is the first Room, and J is the first cylinder, K is the second cylinder, and L is the 3rd cylinder, and M is the 4th cylinder, and N is the 5th cylinder.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
The utility model is a kind of excavator rotary motor counnter attack rotary valve, as shown in Figure 1, is the structural representation of a kind of excavator rotary motor with counnter attack rotary valve.It comprises valve pocket 6, valve pocket 6 inside are provided with valve seat 12, one end of valve seat 12 is connected with the cone match of poppet valve core 11, the other end of poppet valve core 11 is connected with one end of the first spring 10, the other end of the first spring 10 is connected with the interior hole end surface of valve pocket 6 by spring seat 9, in the endoporus of valve pocket 6 the other ends, spool 8 is installed, one end of spool 8 is connected with one end of the second spring 7, the other end of the second spring 7 is connected (above-mentioned part is all placed in valve pocket 6 inside and is together placed in motor cover 1 with valve pocket 6) with plug screw 2, plug screw 2 is arranged in one end of motor cover 1, the one O shape circle 4 is installed between plug screw 2 and motor cover 1 to be sealed with back-up ring 3, the end face of one end of plug screw 2 and valve pocket 6 is connected, the end that plug screw 2 contacts with valve pocket 6 is provided with the 2nd O shape circle 5 and seals.
Valve pocket 6 has designed endoporus (the second cylinder K and the 5th cylinder N) and a damping hole (the first damping hole C) and two oil throughs (the first oil circuit E and the second oil circuit F) of two sections of different-diameters; Spool 8 inside are provided with a damping hole (the second damping hole D); Poppet valve core 11 has designed two sections of different-diameter outer cylindrical body (the 3rd cylinder L and front end cylinder) and a conical surface.
Valve pocket 6 respectively 12 the first cylinder J and step surface of the second cylinder K by valve pocket 6 and end face and valve seat is connected, the other end of valve pocket 6 is connected with the end contact of plug screw 2, and plug screw 2 is connected with motor cover 1 by screw thread and whole counnter attack rotary valve is pressed in motor cover 1.Valve pocket 6 and valve seat 12 are installed in motor cover 1, the 3rd cylinder L of poppet valve core 11 and the second cylinder K of valve pocket 6 are connected and guarantee that poppet valve core 11 is in the interior flexible movement of valve pocket 6, one end of the conical surface of poppet valve core 11 and valve seat 12 is connected, and forms water chestnut linear sealing, makes sealing better.The 4th cylinder M of spool 8 and the 5th cylinder N of valve pocket 6 are connected and guarantee that spool 8 can be in the interior flexible movement of valve pocket 6.
On the second cylinder K of valve pocket 6 upsides, have the first damping hole C, on the second cylinder K of valve pocket 6 downsides, have the first oil circuit E, on the 5th cylinder N of valve pocket 6 downsides, have the second oil circuit F, on the 5th cylinder N of valve pocket 6 upsides, have the 3rd oil circuit G.Between poppet valve core 11 and valve pocket 6, be separated with the first Room H, the first Room H is communicated with the first oil inlet and outlet A, the second oil inlet and outlet B on motor cover 1 by the second damping hole D on spool 8 and the second oil circuit F, the 3rd oil circuit G.
The utility model paired mounting is in motor cover 1 inside, and after having assembled, the poppet valve core 11 of two counnter attack rotary valves is in contact with one another and is connected by the front end cylinder of front-end face separately, and separately the first spring 10 is compressed to a segment distance backward.
During work, suppose that the second oil inlet and outlet B taps into hydraulic fluid port, when the first oil inlet and outlet A takes back hydraulic fluid port, the high pressure oil of filler opening enters spool 8 inside through the second oil circuit F and the 3rd oil circuit G, through the second damping hole D, enter the first Room H again, and then promote poppet valve core 11 and be moved to the left, until the conical surface of poppet valve core 11 contact formation with valve seat 12, seal, now oil inlet and outlet is not communicated with, motor normal operation, (the first oil inlet and outlet A of motor when motor quits work, the second oil inlet and outlet B cuts off simultaneously), motor should stop operating, but the existence due to inertial force, can drive motor to continue to rotate forward certain angle, the inner cylinder body of motor also can continue to rotate forward, thereby make the fuel-displaced one end of motor moment generation high pressure, now, the counnter attack rotary valve internal pressure that is installed on former filler opening end disappears, the power acting on poppet valve core 11 also disappears, the counnter attack rotary valve internal pressure that is installed on oil outlet end raises, its poppet valve core 11 is therefore stressed moving right also, the poppet valve core 11 that promotes the counnter attack rotary valve of the other end moves right, between poppet valve core 11 and valve seat 12, throw off, the first oil circuit E is also opened, the first oil inlet and outlet A, the second oil inlet and outlet B connects (in this process due to the existence of the second damping hole D, in the process that poppet valve core 11 moves right, can promote spool 8 also moves right, between the 3rd oil circuit G and the second oil circuit F, disconnect, between spool 8 and plug screw 2, form a confined space, make poppet valve core 11 cannot continue to move right, after the pressure balance at the second damping hole D two ends, effect lower valve core 8 at the second spring 7 can be upspring again, the 3rd oil circuit G and the second oil circuit F are communicated with, poppet valve core 11 continues to move right, thereby continue to repeat said process, make to form a unlatching between the 3rd oil circuit G and the second oil circuit F, the dynamic balance state of closing, under the effect of this state, poppet valve core 11 is slowly moved right, guaranteeing not can be because of mobile too fast poppet valve core 11 quick closedown that cause the other end), form a closed-loop path, the high pressure that oil outlet produces disappears, thereby realized the anti-reverse of motor.
Claims (4)
1. an excavator rotary motor counnter attack rotary valve, it is characterized in that, comprise valve pocket (6), valve pocket (6) inside is provided with valve seat (12), one end of valve seat (12) is connected with the cone match of poppet valve core (11), the other end of poppet valve core (11) is connected with one end of the first spring (10), the other end of the first spring (10) is connected with the interior hole end surface of valve pocket (6) by spring seat (9), in the endoporus of valve pocket (6) the other end, be provided with spool (8), one end of spool (8) is connected with one end of the second spring (7), the other end of the second spring (7) is connected with plug screw (2), plug screw (2) is located in one end of motor cover (1), between plug screw (2) and motor cover (1), be provided with an O shape circle (4) and back-up ring (3), the end face of one end of plug screw (2) and valve pocket (6) is connected, between plug screw (2) and valve pocket (6) junction surface, be provided with the 2nd O shape circle (5) sealing.
2. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 1, it is characterized in that, described valve pocket (6) is connected by the first cylinder (J) and the step surface of second cylinder (K) of valve pocket (6) and (12) of end face and valve seat respectively, the other end of valve pocket (6) is connected with the end contact of plug screw (2), plug screw (2) is threaded with motor cover (1), valve pocket (6) and valve seat (12) are all located in motor cover (1), the 3rd cylinder (L) of described poppet valve core (11) is connected with second cylinder (K) of valve pocket (6), one end of the conical surface of poppet valve core (11) and valve seat (12) is connected, form water chestnut linear sealing, the 4th cylinder (M) of described spool (8) is connected with the 5th cylinder (N) of valve pocket (6).
3. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 2, it is characterized in that, second cylinder (K) of described valve pocket (6) upside is provided with the first damping hole (C), second cylinder (K) of valve pocket (6) downside is provided with the first oil circuit (E), the 5th cylinder (N) of valve pocket (6) downside is provided with the second oil circuit (F), and the 5th cylinder (N) of valve pocket (6) upside is provided with the 3rd oil circuit (G).
4. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 2, it is characterized in that, between described poppet valve core (11) and valve pocket (6), be provided with the first Room (H), the first Room (H) is communicated with the first oil inlet and outlet (A), the second oil inlet and outlet (B) on motor cover (1) by the second damping hole (D) on spool (8) and the second oil circuit (F), the 3rd oil circuit (G).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491054.3U CN203413168U (en) | 2013-08-12 | 2013-08-12 | Anti-reversion valve for rotary motor of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491054.3U CN203413168U (en) | 2013-08-12 | 2013-08-12 | Anti-reversion valve for rotary motor of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413168U true CN203413168U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320491054.3U Expired - Lifetime CN203413168U (en) | 2013-08-12 | 2013-08-12 | Anti-reversion valve for rotary motor of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413168U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246627A (en) * | 2016-08-20 | 2016-12-21 | 黎明液压有限公司 | A kind of rotary control type hydraulicdirectional control valve |
| CN108895185A (en) * | 2018-08-01 | 2018-11-27 | 佛山信卓派思机械科技有限公司 | A kind of anti-slip control valve |
| CN114263646A (en) * | 2021-12-29 | 2022-04-01 | 潍柴动力股份有限公司 | Anti-reverse valve for rotary motor |
-
2013
- 2013-08-12 CN CN201320491054.3U patent/CN203413168U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246627A (en) * | 2016-08-20 | 2016-12-21 | 黎明液压有限公司 | A kind of rotary control type hydraulicdirectional control valve |
| CN106246627B (en) * | 2016-08-20 | 2017-10-27 | 黎明液压有限公司 | A kind of rotary control type hydraulicdirectional control valve |
| CN108895185A (en) * | 2018-08-01 | 2018-11-27 | 佛山信卓派思机械科技有限公司 | A kind of anti-slip control valve |
| CN108895185B (en) * | 2018-08-01 | 2019-11-19 | 玉环华洲机械股份有限公司 | A kind of anti-slip control valve |
| CN114263646A (en) * | 2021-12-29 | 2022-04-01 | 潍柴动力股份有限公司 | Anti-reverse valve for rotary motor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |