CN203412833U - Anti-reversing valve for excavator rotary motor - Google Patents
Anti-reversing valve for excavator rotary motor Download PDFInfo
- Publication number
- CN203412833U CN203412833U CN201320346181.4U CN201320346181U CN203412833U CN 203412833 U CN203412833 U CN 203412833U CN 201320346181 U CN201320346181 U CN 201320346181U CN 203412833 U CN203412833 U CN 203412833U
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- spool
- fixed cover
- cylinder
- valve
- spring
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
The utility model relates to an anti-reversing valve for an excavator rotary motor. The anti-reversing valve is characterized by comprising a fixing sleeve; the fixing sleeve and parts placed in the fixing sleeve are integrally arranged in a valve body; the parts placed in the fixing sleeve comprise a plug screw of which one end is connected with one end of a top rod; the top rod is arranged in the inner cavity of a first valve core placed in the inner cavity of the fixing sleeve; a spring is arranged between the first valve core and inner steps in the fixing sleeve; a spring holder is arranged between the spring and the first valve core; one end of a second valve core is connected with the first valve core; a steel ball is arranged between the first and second valve cores; a conical spring is arranged at the other end of the second valve core. The anti-reversing valve for the excavator rotary motor is simple and reasonable in structure, parts can be conveniently machined, the two valve cores and the fixing sleeve are connected in a guide mode to avoid eccentric clamping, and meanwhile, the anti-reversing valve for the excavator rotary motor is high in stability and can better help the motor to stably work, so the smoothness of a whole excavator is improved.
Description
Technical field
The utility model relates to a kind of excavator rotary motor counnter attack rotary valve, belongs to technical field of hydraulic elements.
Background technique
Counnter attack rotary valve is an important constituent element in excavator rotary motor, and its Main Function is: when rotary motor stops operating, it can prevent the reversion of the motor that brings due to inertia impact, 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, difficulty of processing is large, unstable properties.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of simple in structure, easy processing, the excavator rotary motor of stable performance 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 fixed cover, fixed cover integral body together with being placed in the part of fixed cover inside is placed in valve body, wherein:
The part that is placed in fixed cover inside comprises plug screw, plug screw one end is connected with one end of push rod, push rod is located at the first valve core cavity, the first spool is placed in fixed cover inner chamber, between the first spool and the interior step of fixed cover, be provided with spring, between spring and the first spool, be provided with spring seat, one end of the second spool is connected with the first spool, between the first spool and the second spool, establish steel ball, at the other end of the second spool, establish cone spring.
Preferably, between described fixed cover and described valve body, be threaded connection; Described the second spool is located at the inner chamber front end of described fixed cover, and the second cylinder, the 3rd cylinder by the second spool between described the second spool and described fixed cover coordinate with the first cylinder, the 4th cylinder of fixed cover respectively; Described cone spring is between described the second spool and described valve body; Described the first spool coordinates with the 5th cylinder, the 7th cylinder of described fixed cover respectively by the 6th cylinder, the 8th cylinder; Described push rod coordinates with the 8th cylinder of described the first spool by its cylindrical; Described plug screw is connected with described fixed cover by screw thread.
Preferably, between described the second spool and described fixed cover, be provided with the first Room, between described push rod and described the first spool, be provided with the second Room; The first Room is connected by the throttle orifice on described the second spool, the first oil circuit and filler opening, and the second Room is connected by the first oil circuit, the second oil circuit, the 3rd oil circuit and filler opening.
Preferably, between described plug screw and described fixed cover, establish the 2nd O shape circle; Between described fixed cover and described valve body, be provided with O shape circle and a back-up ring; Two oil ports that described valve body is connected with motor are established respectively the 3rd O shape circle and the 4th O shape circle.
The utility model is simple and reasonable, and part is easy to process, all adopts guiding to be connected and make it eccentric clamping stagnation can not occur between two spools and fixed cover.The utility model stability is high simultaneously, can help better motor smooth working, thereby promotes 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.
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.Between fixed cover 2 and valve body 1, be threaded connection and be provided with O shape circle 7 and a back-up ring 8; Fixed cover 2 inner chamber front ends arrange the second cylinder 16, the 3rd cylinder 17 by the second spool 4 between the second spool 4, the second spools 4 and fixed cover 2 and coordinate with fixed cover 2 first cylinders 15, the 4th cylinder 18 respectively; Between the second spool 4 and valve body 1, be provided with cone spring 3; The first spool 6 coordinates with the 5th cylinder 20, the 7th cylinder 22 of fixed cover 2 respectively by the 6th cylinder 21, the 8th cylinder 23; Between the first spool 6 and the second spool 4, steel ball 5 is set; Push rod 11 coordinates with the first spool 6 the 8th cylinder 23 by its cylindrical; Between the first spool 6 and valve body 1, be provided with spring 9 and pad 10; Plug screw 13 is connected with fixed cover 2 by screw thread; Between plug screw 13 and fixed cover 2, establish the 2nd O shape circle 12; Two oil ports that valve body 1 is connected with motor are established respectively the 3rd O shape circle the 14 and the 4th O shape circle 19.
Between the second spool 4 and fixed cover 2, be provided with the first Room H, between push rod 11 and the first spool 6, be provided with the second Room J; The first Room H connects by the throttle orifice G on the second spool 4, the first oil circuit A and filler opening, and the second Room J connects by the first oil circuit A, the second oil circuit B, the 3rd oil circuit C and filler opening.
The second spool 4 has designed cylinder and an inner oil through B of three sections of different-diameters, and wherein the last period, cylinder was used for boring spring 3 guiding, guaranteed that cone spring 3 is flexible in straight line direction; Middle part the second cylinder 16 coordinates with the first cylinder 15 of fixed cover 2; Rear end the 3rd cylinder 17 coordinates with the 4th cylinder 18 of fixed cover 2; The benefit that this two place coordinates is to guarantee that the second spool 4 is coaxial with fixed cover 2, and the second spool 4 is difficult for occurring clamping stagnation in fixed cover.
The first spool 6 has designed three sections of different-diameter outer cylindrical body and an inner oil through C; Wherein front end the 6th cylinder 21 coordinates with the 5th cylinder 20 of fixed cover 2; Rear end the 8th cylinder 23 coordinates with fixed cover 2 the 7th cylinder 22; The benefit that this two place coordinates is to guarantee that the first spool 6 is coaxial with fixed cover 2, and the first spool 6 is difficult for occurring clamping stagnation in fixed cover; Middle part cylinder guarantees that for spring 9 guiding spring 9 is flexible in straight line direction;
Fixed cover 2 outsides are provided with one section of screw thread and a throttle orifice G; Screw thread is for being connected with valve body 1, and be provided with an O shape circle 7 with back-up ring 8 for sealing, thereby guarantee that whole counnter attack rotary valve has good sealing; Throttle orifice G is communicated with the first Room H with oil circuit A.
During the work of counnter attack rotary valve, two oil circuit outlets A, F of valve body 1 are connected with the oil inlet and outlet of motor respectively, suppose A termination filler opening, during F termination return opening, high pressure oil P pushes steel ball open and enters the second Room J through oil circuit C after oil circuit A, B, and another road enters the first Room H through throttle orifice G simultaneously; Now the second Room J is inner raises, the first spool 6 is up promoted, thereby promoting the second spool 4 also moves up, spring contraction is in this process, existence due to throttle orifice G, the first indoor pressure raises can be slower than the second Room, and therefore the first spool 6 and the second spool 4 can not thrown off in this process.When motor stops, oil inlet and outlet is closed simultaneously, and now, on the one hand due to the existence of inertial force, excavator can drive motor to continue to turn an angle forward, therefore can produce high pressure in oil outlet one side.On the other hand, because inlet pressure disappears, so the pressure of the second Room J is also along with disappearance, under the effect of spring 9, the first spool 6 is pushed back original position, the second spool 4 also can be got back to original position under the effect of cone spring 3, but because the speed that existence the second spool 4 of throttle orifice G moves down can be slower than the first spool 6, now throw off the first spool 4 and the second spool 6 joints, oil circuit A, B, E, F are communicated with, and the oil inlet and outlet of motor is communicated with, and forms a closed-loop path, the high pressure that oil outlet produces disappears, thereby has realized the anti-reverse of motor.
Claims (4)
1. an excavator rotary motor counnter attack rotary valve, is characterized in that: comprise fixed cover (2), integral body is placed in valve body (1), wherein together with fixed cover (2) part inner with being placed in fixed cover (2):
Be placed in the inner part of fixed cover (2) and comprise plug screw (13), plug screw (13) one end is connected with one end of push rod (11), push rod (11) is located at the first spool (6) inner chamber, the first spool (6) is placed in fixed cover (2) inner chamber, between the first spool (6) and the interior step of fixed cover (2), be provided with spring (9), between spring (9) and the first spool (6), be provided with spring seat (10), one end of the second spool (4) is connected with the first spool (6), between the first spool (6) and the second spool (4), establish steel ball (5), at the other end of the second spool (4), establish cone spring (3).
2. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 1, is characterized in that: between described fixed cover (2) and described valve body (1), be threaded connection; Described the second spool (4) is located at the inner chamber front end of described fixed cover (2), and the second cylinder (16), the 3rd cylinder (17) by the second spool (4) between described the second spool (4) and described fixed cover (2) coordinate with the first cylinder (15), the 4th cylinder (18) of fixed cover (2) respectively; Described cone spring (3) is positioned between described the second spool (4) and described valve body (1); Described the first spool (6) coordinates with the 5th cylinder (20), the 7th cylinder (22) of described fixed cover (2) respectively by the 6th cylinder (21), the 8th cylinder (23); Described push rod (11) coordinates with the 8th cylinder (23) of described the first spool (6) by its cylindrical; Described plug screw (13) is connected with described fixed cover (2) by screw thread.
3. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 1 or 2, it is characterized in that: between described the second spool (4) and described fixed cover (2), be provided with the first Room (H), between described push rod (11) and described the first spool (6), be provided with the second Room (J); The first Room (H) is connected with filler opening by the throttle orifice (G) on described the second spool (4), the first oil circuit (A), and the second Room (J) connects with filler opening by the first oil circuit (A), the second oil circuit (B), the 3rd oil circuit (C).
4. a kind of excavator rotary motor counnter attack rotary valve as claimed in claim 1 or 2, is characterized in that: between described plug screw (13) and described fixed cover (2), establish the 2nd O shape circle (12); Between described fixed cover (2) and described valve body (1), be provided with an O shape circle (7) and back-up ring (8); Two oil ports that described valve body (1) is connected with motor are established respectively the 3rd O shape circle (14) and the 4th O shape circle (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320346181.4U CN203412833U (en) | 2013-06-17 | 2013-06-17 | Anti-reversing valve for excavator rotary motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320346181.4U CN203412833U (en) | 2013-06-17 | 2013-06-17 | Anti-reversing valve for excavator rotary motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412833U true CN203412833U (en) | 2014-01-29 |
Family
ID=49975722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320346181.4U Expired - Fee Related CN203412833U (en) | 2013-06-17 | 2013-06-17 | Anti-reversing valve for excavator rotary motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826839A (en) * | 2019-03-29 | 2019-05-31 | 潍柴动力股份有限公司 | A kind of rotary motor counnter attack rotary valve and engineering machinery |
-
2013
- 2013-06-17 CN CN201320346181.4U patent/CN203412833U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826839A (en) * | 2019-03-29 | 2019-05-31 | 潍柴动力股份有限公司 | A kind of rotary motor counnter attack rotary valve and engineering machinery |
| CN109826839B (en) * | 2019-03-29 | 2024-05-17 | 潍柴动力股份有限公司 | Anti-reverse valve for rotary motor and engineering machinery |
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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 |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 4, 2023, the expiration and termination of the 39 volume 2701 patent Number: 27-01 Volume: 39 |
|
| CU01 | Correction of utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |