CN203836303U - Excavator travel motor overflow valve - Google Patents
Excavator travel motor overflow valve Download PDFInfo
- Publication number
- CN203836303U CN203836303U CN201420092623.1U CN201420092623U CN203836303U CN 203836303 U CN203836303 U CN 203836303U CN 201420092623 U CN201420092623 U CN 201420092623U CN 203836303 U CN203836303 U CN 203836303U
- Authority
- CN
- China
- Prior art keywords
- valve body
- overflow valve
- travel motor
- overflow
- piston
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model relates to an excavator travel motor overflow valve. The excavator travel motor overflow valve comprises a plug, an overflow valve body is arranged on the plug, a valve body end cover is installed at the right end of the overflow valve body, a piston is arranged on the right end of the plug, the plug is sequentially provided with a spring base and a buffer base from left to right, a spring is installed on the outer side of the spring base and the outer side of the buffer base through the spring base, a valve element is arranged in the buffer base, and the valve element penetrates through the piston and is arranged on the port in the right end of the overflow valve body. The excavator travel motor overflow valve is used for an excavator travel motor and is a novel overflow safety protection valve integrating buffer and system protection. According to the excavator travel motor overflow valve, fine liquid flow adjustment in the system hydraulic buffer and overflow mode is achieved through the unique design concept and simulation of a hydraulic system. The excavator travel motor can work more stably, reliably and softly.
Description
(1) technical field
The present invention relates to engineering machinery excavator walk motor with hydraulic pressure product, particularly a kind of digger travel motor relief valve.
(2) background technique
Using for reference import Korea Spro is digger travel motor like product, uses for a long time, tests, and fully digesting, absorb on their product basis, carries out design concept innovation, structural design innovation, thus develop the relief valve product that a kind of applicable excavator uses.Same kind of products at abroad is used for reference, integrated to this device, and complete independently design, is applicable to excavator walk motor with hydraulic pressure, and replace imported brand, is a kind of novel structure innovation product completely.
(3) summary of the invention
The invention provides a kind of digger travel motor relief valve simple in structure, easy to use, this relief valve motor is built pressure gradually, steadily accelerates, and moves soft.
The present invention is achieved through the following technical solutions:
A kind of digger travel motor relief valve, comprise screw plug, its special way is: overflow valve body is set on screw plug, the right-hand member of this overflow valve body is installed valve body end cap, the right-hand member of screw plug arranges piston, sets gradually from left to right spring seat, buffing pad in screw plug, and spring is placed in respectively the outside of spring seat and buffing pad by spring seat, in buffing pad, be provided with spool, this spool is placed in the port of the right-hand member of overflow valve body through piston.
Digger travel motor relief valve of the present invention, packing ring A is set on spring seat, packing ring B is set on buffing pad, groove is all set on screw plug, piston, valve body end cap, difference mounting O-shaped rings in this groove, on valve body end cap, the two ends of O type circle A arrange respectively back-up ring, and O type circle B is set in the groove in the outside of overflow valve body.
The invention has the beneficial effects as follows: patent of the present invention provides a kind of and used for digger travel motor, integrate the novel overflow safety Protective valve of buffering, system protection.This product, by original design concept and Hydraulic System Simulation, is realized meticulousr system hydraulic cushion and the adjustment of the stream of the liquid under overflow pattern.Make digger travel motor more stable work, reliable, soft.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is structural representation of the present invention;
When accompanying drawing 2 is relief valve work of the present invention, first paragraph mode of operation schematic diagram;
When accompanying drawing 3 is relief valve work of the present invention, second segment mode of operation schematic diagram;
When accompanying drawing 4 is relief valve work of the present invention, the 3rd section of mode of operation schematic diagram;
When accompanying drawing 5 is relief valve work of the present invention, the 4th section of mode of operation schematic diagram;
In figure: 1. screw plug; 2. packing ring; 3. spring seat; 4. spring; 5. overflow valve body; 6. buffing pad; 7.O type circle B; 8. packing ring; 9. piston; 10.O type circle C; 11. spools; 12. valve body end caps; 13.O type circle A; 14. back-up rings.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises screw plug 1, overflow valve body 5 is set on screw plug 1, the right-hand member of this overflow valve body 5 is installed valve body end cap 12, the right-hand member of screw plug 1 arranges piston 9, in screw plug 1, set gradually from left to right spring seat 3, buffing pad 6, spring 4 is placed in respectively the outside of spring seat 3 and buffing pad 6 by spring seat 3, be provided with spool 11 in buffing pad 6, and this spool 11 is placed in the port of the right-hand member of overflow valve body 5 through piston 9.Packing ring A2 is set on spring seat 3, packing ring B8 is set on buffing pad 6, on screw plug 1, piston 9, valve body end cap 12, groove is all set, difference mounting O-shaped rings 7 in this groove, 10,13, on valve body end cap 12, the two ends of O type circle A13 arrange respectively back-up ring 14, O type circle B7 is set in the groove in the outside of overflow valve body 5, O type circle C10 is set in the groove of screw plug 1.
During this relief valve work, there are four sections of mode of operations:
(1) initial actuating, produces overflow; Object: absorb hydraulic shock, protection motor is normally worked.
When system is started working, next oily by A mouth, when pressure-acting is at spool 11 end faces, while surpassing sequence number spring 4 pressure, spool 11 is moved to the left, and hydraulic oil is flowed out by B mouth, completion system off-load;
Meanwhile, hydraulic oil in the direction of arrows, flows to throttling oilhole b by throttling oilhole a and by throttling oilhole c, flows into piston 9 left sides again, promotes piston 9 and moves, until right-hand member;
Now buffing pad 6 left ends are built pressure, promote spool 11 move to right by buffing pad 6, and throttle down, completes off-load buffering.
(2) echelon is opened off-load, makes steady acceleration, realizes the soft operation of action.This action is the pilot process of (one) initial actuating.
When A mouth comes oily, fluid does not also flow into by b mouth, before pressure is built in piston 9 left sides, first in spool 11 left sides, build pressure, because fluid has been laid in buffing pad 6 left sides at any time, when spool 11 is moved to the left, buffing pad 6 left side fluid produce buffer function simultaneously, spool 11 can not once be moved at the end, but open off-load gradually.Thereby realize motor and build gradually pressure, steadily accelerate, move softer.
(3) superpressure off-load, system protection
When before superpressure off-load, system is normally worked, spool 11 left side pressure are power F2 and the acting force of the spring F1 sum that hydraulic oil acts on spool 11 section S 2, and spool 11 right atrial pressures are the power F3 that hydraulic oil acts on spool 11 section S 3.
Because of S3 > S2, when system pressure raises, during F3 > F1+F2, spool 11 moves to left, and realizes system unloaded, plays off-load protective action.
(4) reset function of relief valve
Excavator reverse operating, or while stopping suddenly, B mouth comes oily or excavator effect of inertia produces high pressure due to system, and A mouth pressure sharply declines or produces negative pressure simultaneously;
Now hydraulic oil flows into piston 9 right sides by B mouth, promotes piston 9 and moves to left, and piston 9 left side fluid is extruded by arrow direction indication simultaneously, flows out A mouth, realizes relief valve and resets.
Claims (2)
1. a digger travel motor relief valve, comprise screw plug (1), it is characterized in that: overflow valve body (5) is set on screw plug (1), the right-hand member of this overflow valve body (5) is installed valve body end cap (12), the right-hand member of screw plug (1) arranges piston (9), in screw plug (1), set gradually from left to right spring seat (3), buffing pad (6), spring (4) is placed in respectively the outside of spring seat (3) and buffing pad (6) by spring seat (3), in buffing pad (6), be provided with spool (11), this spool (11) is placed in the port of the right-hand member of overflow valve body (5) through piston (9).
2. digger travel motor relief valve according to claim 1, it is characterized in that: spring seat arranges packing ring A(2 on (3)), buffing pad arranges packing ring B(8 on (6)), screw plug (1), piston (9), valve body end cap all arrange groove on (12), difference mounting O-shaped rings (7,10,13) in this groove, the upper O type circle A(13 of valve body end cap (12)) two ends arrange respectively back-up ring (14), and O type circle B(7 is set in the groove in the outside of overflow valve body (5)).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092623.1U CN203836303U (en) | 2014-03-03 | 2014-03-03 | Excavator travel motor overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092623.1U CN203836303U (en) | 2014-03-03 | 2014-03-03 | Excavator travel motor overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836303U true CN203836303U (en) | 2014-09-17 |
Family
ID=51514145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092623.1U Withdrawn - After Issue CN203836303U (en) | 2014-03-03 | 2014-03-03 | Excavator travel motor overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867764A (en) * | 2014-03-03 | 2014-06-18 | 青岛力克川液压机械有限公司 | Overflow valve for excavator walking motor |
| CN106090362A (en) * | 2016-08-11 | 2016-11-09 | 中国海洋大学 | A kind of direct-acting overflow valve |
-
2014
- 2014-03-03 CN CN201420092623.1U patent/CN203836303U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867764A (en) * | 2014-03-03 | 2014-06-18 | 青岛力克川液压机械有限公司 | Overflow valve for excavator walking motor |
| CN103867764B (en) * | 2014-03-03 | 2016-03-30 | 青岛力克川液压机械有限公司 | A kind of digger travel motor relief valve |
| CN106090362A (en) * | 2016-08-11 | 2016-11-09 | 中国海洋大学 | A kind of direct-acting overflow valve |
| CN106090362B (en) * | 2016-08-11 | 2018-03-23 | 中国海洋大学 | A kind of direct-acting overflow valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103867764B (en) | A kind of digger travel motor relief valve | |
| CN203926221U (en) | Cushion cylinder | |
| CN201875226U (en) | Sequence valve | |
| EP2960498A3 (en) | Rapidly modulated hydraulic supply for a robotic device | |
| CN203836303U (en) | Excavator travel motor overflow valve | |
| EP2740952A3 (en) | Hydrostatic guide device and machine tool using the hydrostatic guide device | |
| CN105003472A (en) | Novel gas-liquid pressure cylinder | |
| CN103321651A (en) | Global-function slurry balance jacking pipe | |
| CN204299514U (en) | A kind of by-pass valve of screwdrill | |
| CN202707664U (en) | Ultrahigh pressure unloading speed regulation device | |
| CN102367818A (en) | Special integrated group valve for electrohydraulic push rod | |
| CN204729389U (en) | A kind of oil hydraulic cylinder with pressure-reducing cushioning | |
| CN204253482U (en) | A kind of two-way unloading valve | |
| CN104314923B (en) | A kind of relief valve return liquid system and integrated relief valve return liquid valve block | |
| GB2550315A (en) | Safety valve for a hydraulic or pneumatic tool | |
| CN103775418A (en) | Hydraulic machine double-cylinder synchronizing device | |
| CN207131565U (en) | Efficient high-pressure power plunger pump | |
| CN204025232U (en) | A kind of pressure regulating piston device of vehicle bumper systems | |
| CN203743446U (en) | Self-reliant type rapid cut-off valve | |
| CN203272302U (en) | Non-return type pressure valve | |
| CN202646212U (en) | Double hydraulic control one-way valve | |
| CN202867369U (en) | Hydraulic cylinder with buffering system | |
| CN204003758U (en) | The adjustable oil cylinder of stroke | |
| CN203201601U (en) | Hydraulic servo-motor in turbine adjusting system | |
| CN204127509U (en) | A kind of multiplex roles oil pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |