CN203670324U - Braking release valve for slewing motor of excavator - Google Patents
Braking release valve for slewing motor of excavator Download PDFInfo
- Publication number
- CN203670324U CN203670324U CN201320800347.5U CN201320800347U CN203670324U CN 203670324 U CN203670324 U CN 203670324U CN 201320800347 U CN201320800347 U CN 201320800347U CN 203670324 U CN203670324 U CN 203670324U
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- China
- Prior art keywords
- oil circuit
- spool
- valve body
- oil way
- oil
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- 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 - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 8
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 3
- 241001083492 Trapa Species 0.000 claims description 3
- 235000014364 Trapa natans Nutrition 0.000 claims description 3
- 235000009165 saligot Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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Abstract
The utility model provides a braking release valve for a slewing motor of an excavator. The braking release valve is characterized in that the braking release valve comprises a valve body, a first oil way, a second oil way and a third oil way are arranged in the valve body, the first oil way is communicated with the third oil way through the second oil way, the left end of the third oil way is communicated with a brake cavity inside the motor, a valve element and a second screw plug are arranged inside the second oil way, the second screw plug is connected with the valve body through threads, a spring is arranged between the second screw plug and the valve element, the valve element comprises an upper part and a lower part, the side surface of the upper part is a conical surface, the lower part is a first cylinder, the inner wall of the second oil way is provided with a second cylindrical surface and a step-shaped part, the first cylinder of the valve element is arranged on the inner side of the second cylindrical surface of the second oil way, and diamond-line-type sealing can be formed between the step-shaped part of the second oil way and the conical surface of the valve element. The braking release valve is simple and reasonable in structure, low in manufacturing cost and stable in performance, and parts of the braking release valve are convenient to machine.
Description
Technical field
The utility model relates to a kind of excavator motor braking relief valve, belongs to oil hydraulic motor field.
Background technique
Braking relief valve is an important constituent element in oil hydraulic motor, and its Main Function is: in the time that oil hydraulic motor is started working, it can push the braking device of motor inside open to motor discharge pressure oil, thereby removes the braking effect of motor; While quitting work, it can extend and is cut to oil hydraulic motor from oil circuit and finally stops operating the time used, thereby reduces impact oil hydraulic motor and excavator being produced due to inertia, stationarity and the working life of improving excavator.As shown in Figure 2, be traditional braking relief valve structural representation for excavator motor, the deficiency that the described braking relief valve for excavator motor mainly exists has: complex structure, part are difficult for processing, and manufacture cost is high.
Summary of the invention
The technical problem that to be solved in the utility model is existing braking relief valve complex structure, part difficulty of processing is large and manufacture cost is high.
In order to solve the problems of the technologies described above, the utility model provides a kind of excavator rotary motor braking relief valve, it is characterized in that, comprise valve body, in valve body, be provided with the first oil circuit, the second oil circuit and the 3rd oil circuit, the 3rd oil circuit is positioned at the top of the first oil circuit, and the second oil circuit is communicated with the first oil circuit and the 3rd oil circuit, the right-hand member of the first oil circuit and the 3rd oil circuit all exposes from the right side of valve body, and the right-hand member of the 3rd oil circuit is provided with screw plug, and the left end of the 3rd oil circuit is communicated with the inner break cavity of motor, expose from valve body upside the upper end of the second oil circuit, the upper end of the second oil circuit is provided with the first plug screw, the second oil circuit inside is provided with spool and the second plug screw, the second plug screw is connected with valve body by screw thread, between the second plug screw and spool, be provided with spring, described spool comprises part and lower part, the side of upper part is the conical surface, bottom is divided into the first cylinder, the inwall of the second described oil circuit has the second cylndrical surface and stepped portion, the first cylinder of spool is located at the second inner side, cylndrical surface of the second oil circuit and is left gap, between the described stepped portion of the second oil circuit and the conical surface of spool, can form the sealing of water chestnut line style, valve core inside is provided with damping hole, damping hole is communicated with the first oil circuit with the second oil circuit.
Preferably, the first described cylinder is to cut flat cylindrical structure.
Preferably, the upper end of the second described oil circuit is provided with seal ring.
Preferably, the first described oil circuit and the 3rd oil circuit are parallel to each other; 90 ° of mutual droughts between the first described oil circuit and the second oil circuit and the 3rd oil circuit and the second oil circuit.
Preferably, match in the outside of the first cylinder of described spool and the second cylndrical surface of the second oil circuit.
Compared with prior art, the utility model has the advantages that:
The excavator rotary motor that the utility model provides is simple and reasonable with braking relief valve, and part is easy to process, low cost of manufacture, and stability is high.The utility model, without guide oil is provided, only need to provide braking releasing and the Parking duration that a road pressure oil can complete motor to brake.
Brief description of the drawings
Fig. 1 is excavator rotary motor of the present utility model braking relief valve structural representation;
Fig. 2 is traditional braking relief valve structural representation for excavator motor.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
As shown in Figure 1, for braking relief valve structural representation for excavator rotary motor of the present utility model, braking relief valve for described excavator rotary motor, comprise valve body 1, in valve body 1, be provided with the first oil circuit A, the second oil circuit B and the 3rd oil circuit C, the 3rd oil circuit C is positioned at the top of the first oil circuit A, and the second oil circuit B is communicated with the first oil circuit A and the 3rd oil circuit C, and described the first oil circuit A and the 3rd oil circuit C are parallel to each other; Between the first described oil circuit A and the second oil circuit B and the 3rd oil circuit C and the second oil circuit B, be mutually 90 °; The right-hand member of the first oil circuit A and the 3rd oil circuit C all exposes from the right side of valve body 1, and the left end that the right-hand member of the 3rd oil circuit C is provided with screw plug 5, the three oil circuit C is communicated with the inner break cavity of motor; Expose from valve body 1 upside the upper end of the second oil circuit B, the upper end of the second oil circuit B is provided with the first plug screw 6 and seal ring 7, the second oil circuit B inside is provided with spool 2 and the second plug screw 4, the second plug screw 4 is connected with valve body 1 by screw thread, between the second plug screw 4 and spool 2, be provided with spring 3, described spool 2 comprises part and lower part, and the side of upper part is conical surface G, bottom is divided into the first cylinder E, and the first described cylinder E cuts flat cylindrical structure.The inwall of the second described oil circuit B has the second cylndrical surface F and stepped portion, match with the second cylndrical surface F of the second oil circuit B in the outside of the first cylinder E of spool 2, the first cylinder E of spool 2 is located at the second cylndrical surface F inner side of the second oil circuit B and leaves gap, guarantee spool 2 and the second oil circuit B cooperation place can be moved flexibly and can be allowed fluid pass through fast, between the conical surface G of the stepped portion of the second oil circuit B and spool 2, can form the sealing of water chestnut line style, spool 2 inside are provided with damping hole D, and damping hole D is communicated with the first oil circuit A with the second oil circuit B.
In the time that motor is started working, by control oil sources valve, high pressure oil is exposed to mouth from the first oil circuit A left end and pass into valve body, again respectively by the first oil circuit A, gap between spool 2 and valve body 1 is (in the time that pressure oil flows from lower to upper, oil pressure acts on spool 2 lower end surfaces, thereby promote the upwards disengagement of sealing place between Compress Spring 3 spool 2 conical surfaces and valve body 1 of spool 2, due to spool 2 with valve body 1 matching part for cutting flat structure, high pressure oil just can pass through the gap between spool 2 and valve body 1 smoothly), the second oil circuit B, the 3rd oil circuit C arrives the inner break oil pocket of motor H, push break open, reach the object of brake off.
In the time that motor quits work, oil sources valve stops providing high pressure oil, the inner break of motor pushes back valve body 1 by the fluid in break cavity under the effect of spring, reach spool 2 upper-end surfaces by the 3rd oil circuit C, the second oil circuit B, now oil pressure acts on spool 2 upper-end surfaces, promote spool 2 conical surfaces and valve body 1 formation sealing, the fluid that now break refluxes can only flow to the first oil circuit A by the damping hole D of spool 2 inside, under the effect of damping hole D, backflow fluid can only flow " slowly ", thereby reaches the object of delay braking.
Claims (5)
1. a braking relief valve for excavator rotary motor, it is characterized in that, comprise valve body (1), in valve body (1), be provided with the first oil circuit (A), the second oil circuit (B) and the 3rd oil circuit (C), the 3rd oil circuit (C) is positioned at the top of the first oil circuit (A), and the second oil circuit (B) is communicated with the first oil circuit (A) and the 3rd oil circuit (C), the right-hand member of the first oil circuit (A) and the 3rd oil circuit (C) all exposes from the right side of valve body (1), the right-hand member of the 3rd oil circuit (C) is provided with screw plug (5), and the left end of the 3rd oil circuit (C) is communicated with the inner break cavity of motor, expose from valve body (1) upside the upper end of the second oil circuit (B), the upper end of the second oil circuit (B) is provided with the first plug screw (6), the second oil circuit (B) inside is provided with spool (2) and the second plug screw (4), the second plug screw (4) is connected with valve body (1) by screw thread, between the second plug screw (4) and spool (2), be provided with spring (3), described spool (2) comprises part and lower part, the side of upper part is the conical surface (G), bottom is divided into the first cylinder (E), the inwall of described the second oil circuit (B) has the second cylndrical surface (F) and stepped portion, first cylinder (E) of spool (2) is located at the inner side, the second cylndrical surface (F) of the second oil circuit (B) and is left gap, between the stepped portion of described the second oil circuit (B) and the conical surface (G) of spool (2), can form the sealing of water chestnut line style, spool (2) inside is provided with damping hole (D), damping hole (D) is communicated with the first oil circuit (A) with the second oil circuit (B).
2. braking relief valve for excavator rotary motor as claimed in claim 1, is characterized in that, described the first cylinder (E) is for cutting flat cylindrical structure.
3. braking relief valve for excavator rotary motor as claimed in claim 1, is characterized in that, the upper end of described the second oil circuit (B) is provided with seal ring (7).
4. braking relief valve for excavator rotary motor as claimed in claim 1, is characterized in that, described the first oil circuit (A) and the 3rd oil circuit (C) are parallel to each other; Between described the first oil circuit (A) and the second oil circuit (B) and the 3rd oil circuit (C) and the second oil circuit (B), be mutually 90 °.
5. braking relief valve for excavator rotary motor as claimed in claim 1, is characterized in that, matches with second cylndrical surface (F) of the second oil circuit (B) in the outside of first cylinder (E) of described spool (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800347.5U CN203670324U (en) | 2013-12-06 | 2013-12-06 | Braking release valve for slewing motor of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800347.5U CN203670324U (en) | 2013-12-06 | 2013-12-06 | Braking release valve for slewing motor of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670324U true CN203670324U (en) | 2014-06-25 |
Family
ID=50966627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320800347.5U Expired - Fee Related CN203670324U (en) | 2013-12-06 | 2013-12-06 | Braking release valve for slewing motor of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005034A (en) * | 2019-03-26 | 2020-11-27 | Ｋｙｂ株式会社 | Valve device |
-
2013
- 2013-12-06 CN CN201320800347.5U patent/CN203670324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005034A (en) * | 2019-03-26 | 2020-11-27 | Ｋｙｂ株式会社 | Valve device |
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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: 20140625 |