CN203009428U - Overflow valve for motor of excavator - Google Patents
Overflow valve for motor of excavator Download PDFInfo
- Publication number
- CN203009428U CN203009428U CN 201220636368 CN201220636368U CN203009428U CN 203009428 U CN203009428 U CN 203009428U CN 201220636368 CN201220636368 CN 201220636368 CN 201220636368 U CN201220636368 U CN 201220636368U CN 203009428 U CN203009428 U CN 203009428U
- Authority
- CN
- China
- Prior art keywords
- connecting sleeve
- ring
- pole socket
- fixed cover
- seat
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses an overflow valve for a motor of an excavator, which is characterized by comprising a fixing sleeve, wherein a first check ring and a first O-shaped seal ring are arranged at the front part of the outer side of the fixing sleeve; a second O-shaped seal ring and a second check ring are arranged in the middle of the fixing sleeve; a rod seat and a connecting sleeve are arranged in the fixing sleeve; one end of the rod seat is connected with one end of the connecting sleeve through a fourth O-shaped seal ring; a third check ring and a third O-shaped seal ring are arranged between the fixing sleeve and the connecting sleeve; a valve seat is arranged at the other end of the connecting sleeve and is connected with one end of a spring seat through a controlling cone valve core; the other end of the spring seat is connected with a plug screw through a guide rod; the plug screw is connected with the other end of the rod seat through a fifth O-shaped ring; and springs are arranged on the spring seats. The utility model has the characteristics of lower internal leakage, lower pressure run-out, good on/off features and the like.
Description
Technical field
The utility model relates to a kind of excavator motor relief valve, belongs to the hydrovalve field.
Background technique
The excavator motor is mainly used in controlling the Maximum operating pressure of motor with relief valve, voltage stabilizing, protection motor safety.Due to complex structure, machining accuracy and the manufacturability of part are had relatively high expectations with relief valve for the excavator motor of prior art, in let out larger, skewness easily occurs in pilot valve, cause pressure surge larger, affect the stability of relief valve, open and shut characteristic is also relatively poor simultaneously.
Summary of the invention
The purpose of this utility model is to solve the excavator motor with the problem of letting out in relief valve greatly, pressure surge is large, open and shut characteristic is poor, provides to let out the excavator motor relief valve little, that pressure oscillation is little, open and shut characteristic is good in a kind of.
in order to achieve the above object, the utility model provides a kind of excavator motor relief valve, it is characterized in that, comprise fixed cover, the front end in the fixed cover outside is provided with the first back-up ring and the first O-ring seals, be provided with the second O-ring seals and the second back-up ring in the middle of it, be provided with pole socket and connecting sleeve in fixed cover, connect by the 4th O-ring seals between one end of pole socket and an end of connecting sleeve, be provided with the 3rd back-up ring and the 3rd O-ring seals between fixed cover and connecting sleeve, the other end of connecting sleeve is provided with valve seat, valve seat is connected with an end of spring seat by controlling poppet valve core, the other end of spring seat is connected with plug screw by guide rod, plug screw is connected with the other end of pole socket by the 5th O shape circle, spring seat is provided with spring.
preferably, the intracavity posterior end of described valve seat is connected with the front end of controlling poppet valve core, controlling the rear end of poppet valve core is located in the inner chamber front end of spring seat, the intracavity posterior end of spring seat is complementary with the front end of establishing guide rod in the inner, the rear end of guide rod and the inner chamber of pole socket are complementary, the front end of pole socket is located in the intracavity posterior end of connecting sleeve, and the front end of pole socket and the inner chamber of connecting sleeve are complementary, the rear end of pole socket is connected with the rear end of fixed cover, the rear end of pole socket is connected with plug screw by the 5th O shape circle, connecting sleeve is located at the inner chamber front end of fixed cover, and the inner chamber front end of connecting sleeve and fixed cover is complementary, guide rod is connected with the other end of spring by packing ring.
Preferably, described connecting sleeve (2) is provided with at least two oil return endoporus (T).
The utility model compact structure, adopt navigation designing between crest line sealing and each component to make that internal leakage reduces, open and shut characteristic is good, noise is little, range of regulation is large, have simultaneously that override pressure is little, pressure oscillation is little, be subjected to the little characteristics of motor pressure influence of fluctuations, thereby guaranteed the operating life of motor and the stationarity of excavator system integral body.
Description of drawings
Fig. 1 is the structural representation that a kind of excavator motor is used relief valve.
Description of reference numerals
1 is valve seat, 2 is connecting sleeve, 3 for controlling poppet valve core, 4 is the first back-up ring, 5 is the first O-ring seals, 6 is spring seat, 7 is the 3rd back-up ring, 8 is the 3rd O-ring seals, 9 is spring, 10 is packing ring, 11 is the 4th O-ring seals, 12 is the second O-ring seals, 13 is the second back-up ring, 14 is fixed cover, 15 is guide rod, 16 is nut, 17 is pole socket, 18 is plug screw, 19 is the 5th O-ring seals, 20 is the first cylinder, 21 is the second cylinder, 22 is three cylindrical, 23 is the 4th cylinder, 24 is the 5th cylinder, 25 is the 6th cylinder, 26 is the 7th cylinder, 27 is the 8th cylinder, 28 is conical surface, T is spill port, P is oil inlet hole, e is the first damping hole, f is the second damping hole, g is the 3rd damping hole, m is the first Room, k is the second Room, h is the 3rd Room.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
The utility model is a kind of excavator motor relief valve, as shown in Figure 1, is the structural representation of a kind of excavator motor with relief valve.Control the rear end that poppet valve core 3 is positioned at valve seat 1 inner chamber, control the conical surface 28 and valve seat 1 inner chamber precision-fit of poppet valve core 3 front ends.Spring seat 6 is connected with the rear end of controlling poppet valve core 3, and an end of spring 9 is connected with spring seat 6, and the other end is connected with packing ring 10.The front end of guide rod 15 is arranged in spring seat 6 intracavity posterior ends, the first cylinder 20 and spring seat 6 inner chamber precision-fit of guide rod 15 front ends.Guide rod 15 is connected with packing ring 10, the second cylinder 21 and pole socket 17 inner chamber precision-fit in the middle of guide rod 15.Pole socket 17 front ends are embedded in connecting sleeve 2 intracavity posterior ends, and pole socket 17 front ends and connecting sleeve 2 inner chamber precision-fit.Cover has the 4th O-ring seals 11 between pole socket 17 outer peripheral surfaces and connecting sleeve 2 inwalls, is used for sealing.Pole socket 17 rear ends are threaded with fixed cover 14 rear ends, by nut 16 lockings.Cover has the 5th O-ring seals 19 between the conical surface of plug screw 18 outer peripheral surfaces and pole socket 17 rear ends, is used for sealing.Connecting sleeve 2 is embedded in fixed cover 14 inner chamber front ends, connecting sleeve 2 and fixed cover 14 inner chamber front end precision-fit.Between the inwall of the outer peripheral surface of connecting sleeve 2 and fixed cover 14, cover has the 3rd back-up ring 7 and the 3rd O-ring seals 8, is used for sealing.Have at least two radial equipartition spill port T on connecting sleeve 2, the front end sleeve in fixed cover 14 outsides has the first back-up ring 4 and the first O-ring seals 5, and its middle cover has the second O-ring seals 12 and the second back-up ring 13, is used for sealing.
In the present embodiment, have 2 groups of (totally 8) radial equipartition spill port T on connecting sleeve 2.
control cylinder and a conical surface 28 that poppet valve core 3 comprises three rank different-diameter sizes, wherein, the 4th cylinder 23 and the 6th cylinder 25 lay respectively at the two ends of controlling poppet valve core 3, the 4th cylinder 23 outsides connection conical surfaces 28, the conical surface 28 formation linear sealing that matches with the aperture conical surface of valve seat 1, conical surface 28 connects the 6th cylinder 25 by the 5th cylinder 24, the outside of the 6th cylinder 25 is guide surface, and use with the interior cylindrical hole precision-fit of spring seat 6, the 5th cylinder 24 and the interior cylindrical hole precision-fit of connecting sleeve 2, the indent inclined-plane is arranged between the 4th cylinder 23 and the 5th cylinder 24, the first damping hole e on the 6th cylinder 25 communicates with the inner chamber of controlling poppet valve core 3.
During use, control poppet valve core 3 under the effect of spring 9, oil inlet hole P and spill port T are separated, when set pressure and the 3rd Room h of the hydraulic coupling of oil inlet hole P and spring 9 act under the balanced action of the hydraulic coupling of controlling poppet valve core 3, control poppet valve core 3 and open rapidly, oil inlet hole P and spill port T are connected.Afterwards, rising due to the first Room m pressure, when the hydraulic coupling that acts on guide rod 15 during greater than spring 9 load, guide rod 15 begins to the right, and stroke moves, at this moment, be in oil in the second Room k between guide rod 15 and pole socket 17 by the interstitial row between guide rod 15 and pole socket 17 to the first Room m, guide rod 15 moves right simultaneously, the second Room k has played damping function, under above effect, guide rod 15 moves to the top of fixed cover 14 gradually, around here, the load of spring 9 slowly increases, and relief valve pressure raises slowly.The high pressure oil of oil inlet hole P is let out rapidly spill port T reposefully, thereby plays the purpose of protective system.
Claims (3)
1. excavator motor relief valve, it is characterized in that, comprise fixed cover (14), the front end in fixed cover (14) outside is provided with the first back-up ring (4) and the first O-ring seals (5), be provided with the second O-ring seals (12) and the second back-up ring (13) in the middle of it, be provided with pole socket (17) and connecting sleeve (2) in fixed cover (14), connect by the 4th O-ring seals (11) between one end of one end of pole socket (17) and connecting sleeve (2), be provided with the 3rd back-up ring (7) and the 3rd O-ring seals (8) between fixed cover (14) and connecting sleeve (2), the other end of connecting sleeve (2) is provided with valve seat (1), valve seat (1) is connected with an end of spring seat (6) by controlling poppet valve core (3), the other end of spring seat (6) is connected with plug screw (18) by guide rod (15), plug screw (18) is connected with the other end of pole socket (17) by the 5th O shape circle (19), spring seat (6) is provided with spring (9).
2. a kind of excavator motor relief valve as claimed in claim 1, it is characterized in that, the intracavity posterior end of described valve seat (1) is connected with the front end of controlling poppet valve core (3), controlling the rear end of poppet valve core (3) is located in the inner chamber front end of spring seat (6), the intracavity posterior end of spring seat (6) is complementary with the front end of establishing guide rod (15) in the inner, the inner chamber of the rear end of guide rod (15) and pole socket (17) is complementary, the front end of pole socket (17) is located in the intracavity posterior end of connecting sleeve (2), and the inner chamber of the front end of pole socket (17) and connecting sleeve (2) is complementary, the rear end of pole socket (17) is connected with the rear end of fixed cover (14), the rear end of pole socket (17) is connected with plug screw (18) by the 5th O shape circle (19), connecting sleeve (2) is located at the inner chamber front end of fixed cover (14), and connecting sleeve (2) is complementary with the inner chamber front end of fixed cover (14), guide rod (15) is connected with the other end of spring (9) by packing ring (10).
3. a kind of excavator motor relief valve as claimed in claim 1 or 2, is characterized in that, described connecting sleeve (2) is provided with at least two oil return endoporus (T).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636368 CN203009428U (en) | 2012-11-27 | 2012-11-27 | Overflow valve for motor of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636368 CN203009428U (en) | 2012-11-27 | 2012-11-27 | Overflow valve for motor of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009428U true CN203009428U (en) | 2013-06-19 |
Family
ID=48601025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636368 Expired - Lifetime CN203009428U (en) | 2012-11-27 | 2012-11-27 | Overflow valve for motor of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009428U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697019A (en) * | 2013-12-27 | 2014-04-02 | 龙工（上海）精工液压有限公司 | Safety valve for motor of excavator |
| CN108547815A (en) * | 2018-05-25 | 2018-09-18 | 龙工（上海）精工液压有限公司 | Multifunctional rotating motor overflow valve |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
-
2012
- 2012-11-27 CN CN 201220636368 patent/CN203009428U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697019A (en) * | 2013-12-27 | 2014-04-02 | 龙工（上海）精工液压有限公司 | Safety valve for motor of excavator |
| CN108547815A (en) * | 2018-05-25 | 2018-09-18 | 龙工（上海）精工液压有限公司 | Multifunctional rotating motor overflow valve |
| CN109058208A (en) * | 2018-10-17 | 2018-12-21 | 邵玉刚 | A kind of buffer overflow valve |
| CN109058208B (en) * | 2018-10-17 | 2020-05-22 | 浙江奥诗柯流体控制股份有限公司 | Buffer overflow valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203009431U (en) | Cushion valve for excavator motor | |
| CN204186666U (en) | A kind of plug-in type load holding valve and hydraulic load retentive control system | |
| CN203670808U (en) | Pilot-operated relief valve | |
| WO2010005641A3 (en) | Pressure relief valves | |
| CN202252194U (en) | Overflow valve for excavator main control valve | |
| CN203009428U (en) | Overflow valve for motor of excavator | |
| CN104265716B (en) | A kind of super-pressure pilot operated compound relief valve | |
| CN106224607A (en) | A kind of screw thread high pressure inserted valve | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN103697019A (en) | Safety valve for motor of excavator | |
| CN102435431B (en) | Comprehensive test platform for valve used for mining hydraulic bracket | |
| CN203322413U (en) | Two-stage pressure unloading valve | |
| CN108167256A (en) | A kind of plug-in trimmer valve | |
| CN202360824U (en) | Novel bidirectional throttle valve | |
| CN105221514A (en) | A kind of integrated hydraulic cylinder with bidirection press safety protection | |
| CN204573403U (en) | One-way throttle pipe joint | |
| CN202597334U (en) | Buffering safety valve | |
| CN105402449A (en) | Hydraulically-controlled check valve | |
| CN103174693B (en) | Flow regeneration hydraulic lock valve device | |
| CN108413085B (en) | Pressure reducing one-way valve | |
| CN203098472U (en) | Direct-acting type overload oil-recharging valve | |
| CN203421244U (en) | Direct-acting pressure reduction valve | |
| CN110905880B8 (en) | Pressure compensation valve and valve core of cartridge valve hydraulic system | |
| CN205078535U (en) | Integrated pneumatic cylinder with two -way pressure safety protection | |
| CN205383306U (en) | Hydraulic one -way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |