CN202971414U - Buffer device preventing inertia reversion and swing of motor - Google Patents
Buffer device preventing inertia reversion and swing of motor Download PDFInfo
- Publication number
- CN202971414U CN202971414U CN 201220569729 CN201220569729U CN202971414U CN 202971414 U CN202971414 U CN 202971414U CN 201220569729 CN201220569729 CN 201220569729 CN 201220569729 U CN201220569729 U CN 201220569729U CN 202971414 U CN202971414 U CN 202971414U
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Abstract
The utility model relates to a buffer device preventing inertia reversion and swing of a motor. The buffer device comprises an anti-reversion valve body, an anti-reversion valve A and an anti-reversion valve B, wherein the anti-reversion valve A and the anti-reversion valve B are arranged on the anti-reversion valve body; an oil hole 1 and an oil hole i in the anti-reversion valve body are communicated with a motor oil port B; an oil duct h on the anti-reversion valve body is communicated with the oil hole i; an oil duct n on the anti-reversion valve body is communicated with an oil hole o; the anti-reversion valve A and the anti-reversion valve B share the same structure; and four working oil ports of the anti-reversion valve A and the anti-reversion valve B are only required to be communicated with an oil inlet and an oil outlet of the motor. The buffer device solves the technical problems that the hydraulic motor has reversion and swing when the hydraulic motor is switched to a shutdown state from a high-pressure working state. As the buffer device is added to an oil inlet/outlet way of the hydraulic motor, the reversion and swing are avoided.
Description
Technical field
The utility model relates to a kind of damping device required when switching to state of rest for the larger oil hydraulic motor of inertia load by working state.
Background technique
when oil hydraulic motor is switched to when quitting work state by the high-pressure work state, the oil inlet and outlet of motor is all controlled spool and is cut off, but because the effect of inertia of load can make oil hydraulic motor be rotated further, and then the oil channel sealing chamber of connecting fluid pressure motor oil inlet and outlet can produce pressure and changes, namely the original oil channel sealing chamber that connects filler opening becomes the low pressure seal chamber because volume increases, and the oil channel sealing chamber that originally connected oil outlet reduces to become high-pressure sealing chamber due to volume, will make like this motor produce and reverse phenomenon, and then because making the pressure of two Seal cages, reverse changes again, form the re-reversal state that swings back and forth, this state not only can produce a large amount of harmful heats and cause motor life to reduce, and possibly because of this misoperation cause danger accident of oil hydraulic motor.
Summary of the invention
switched to by the high-pressure work state and easily occur when quitting work state reversing and the technical problem of dancing in order to solve existing oil hydraulic motor, the utility model provides a kind of damping device that prevents that motor inertia from reversing and swinging, add a damping device on the oil inlet and outlet oil circuit of oil hydraulic motor, when oil hydraulic motor is switched to when quitting work state by the high-pressure work state, this damping device makes the high low pressure Seal cage of connecting fluid pressure motor oil inlet and outlet can have the connection of short time, the fluid in such two chambeies just can be at short notice by high-pressure spray to low pressure, reach the pressure balance consistent state, thereby reverse and dancing have been solved.
Technical solution of the present utility model:
prevent the damping device that motor inertia reverses and swings, its special way is: comprise the anti-reverse valve body and be arranged on anti-reverse rotary valve A15 and anti-reverse rotary valve B27 on the anti-reverse valve body, be provided with oilhole q24 on described anti-reverse valve body, oilhole o21, oilhole l18, oilhole i14, oil duct h13 and oil duct n20, described oilhole q24, oilhole o21 all communicates with motor hydraulic fluid port A, described oilhole l180 and oilhole i14 all communicate with motor hydraulic fluid port B, described oil duct h13 communicates with oilhole i14, described oil duct n20 communicates with oilhole o21
Described anti-reverse rotary valve A15 and anti-reverse rotary valve B27 structure are identical, and include valve pocket 5, be successively set on spring g12, spool 25, steel ball 8, piston sleeve 3 and plug screw 1 in valve pocket 5,
the end of described spring g12 is fixed on the anti-reverse valve body, its the other end is fixed on spool 25, be provided with the steel ball installation cavity between described spool 25 and piston sleeve 3, described steel ball 8 is arranged in the steel ball installation cavity, be provided with piston 2 and oil duct b in described piston sleeve 3, one end of described steel ball installation cavity communicates with spool oil duct 11 in being arranged on spool 25 and steel ball 8 can sealed valve core oil duct 11, the other end of described steel ball installation cavity communicates with oil duct b6, described oil duct b6 is parallel with the center line of steel ball installation cavity and do not overlap, the other end of described oil duct b6 communicates with an end of piston 2, the other end of described piston 2 acts on plug screw 1, described piston 2 matches with piston sleeve 3,
One end of described piston sleeve 3 matches with valve pocket 5, be provided with spring eye between the other end of described piston sleeve 3 and valve pocket 5, described spring a4 is arranged in spring eye, the end of described spring a4 acts on valve pocket 5, the other end of described spring a4 acts on piston sleeve 3, and described spool 25, valve pocket 5 and piston sleeve 3 surround oil pocket e10, is provided with circular groove on described valve pocket 5, described circular groove communicates with oilhole q24
On described valve pocket 5, be provided with oil duct c7, oil duct d9 and damping hole 22, the end of described oil duct c7 communicates with the middle part of oil duct d9, the other end of described oil duct c7 is communicated with spring eye, the end of described oil duct d9 communicates with oil pocket e10, the other end of described oil duct d9 communicates with cannelure, between described spool 25 and valve pocket 5, be provided with damping oil pocket 23, described oil duct h13 communicates with damping oil pocket 23 by damping hole 22, described valve pocket 5 is provided with place and the end face seal of anti-reverse valve body of cannelure, described oil duct h13 communicates with spool oil duct 11
The oilhole 18 of described anti-reverse rotary valve B27 communicates with the circular groove of anti-reverse rotary valve A15, and the spool oil duct 11 of anti-reverse rotary valve A15 communicates with oil duct n20, and described oil duct n20 communicates with the damping oil pocket 23 of anti-reverse rotary valve A15 by damping hole 22.
Above-mentioned anti-reverse rotary valve A15 and anti-reverse rotary valve B27 are arranged on the both sides of anti-reverse valve body and are oppositely arranged.The utility model has advantages of:
1, effectively improve the functional reliability of oil hydraulic motor.Compression shock when the utility model can reduce oil hydraulic motor and switches to braking state by working state prevents from that motor from producing to reverse and dancing, effectively improves the functional reliability of oil hydraulic motor.
2, simple and compact for structure, easy to connect.Only need 4 actuator ports of the present utility model are connected with corresponding motor oil inlet and outlet and get final product.
Description of drawings
Fig. 1 is the buffer unit structure sketch that prevents that motor inertia from reversing and swinging;
Fig. 2 is the damping device interface schema that prevents that motor inertia from reversing and swinging;
Wherein reference character is: 1-plug screw, 2-piston, 3-piston sleeve, 4-spring a, 5-valve pocket, 6-oil duct b, 7-oil duct c, 8-steel ball, 9-oil duct d, 10-oil pocket e, 11-spool oil duct, 12-spring g, 13-oil duct h, 14-oilhole i, 15-check valve A, 16-oil pocket j, 17-oil duct k, 18-oilhole l, 19-oil duct m, 20-oil duct n, 21-oilhole o, 22-damping hole, 23-damping oil pocket, 24-oilhole q, 25-spool, 26-oil pocket r, 27-check valve B, 28-spring eye, 29-steel ball installation cavity, 30-circular groove.
Embodiment
As shown in Figure 1, prevent the damping device that motor inertia reverses and swings, comprise the anti-reverse valve body and be arranged on two anti-reverse valve assemblys on the anti-reverse valve body, be provided with oilhole q24, oilhole o21, oilhole l18, oilhole i14, oil duct h13 and oil duct n20 on the anti-reverse valve body, oilhole q24, oilhole o21 all communicate with motor hydraulic fluid port A, and oilhole l18 and oilhole i14 all communicate with motor hydraulic fluid port B, and oil duct h13 communicates with oilhole i14, oil duct n20 communicates with oilhole o21
The anti-reverse valve assembly comprises valve pocket 5, is successively set on spring g12, spool 25, steel ball 8, piston sleeve 3 and plug screw 1 in valve pocket 5,
the end of spring g12 is fixed on the anti-reverse valve body, its the other end is fixed on spool 25, be provided with the steel ball installation cavity between spool 25 and piston sleeve 3, steel ball 8 is arranged in the steel ball installation cavity, be provided with piston 2 and oil duct b in piston sleeve 3, one end of steel ball installation cavity communicates with spool oil duct 11 in being arranged on spool 25 and steel ball 8 can sealed valve core oil duct 11, the other end of steel ball installation cavity communicates with oil duct b6, oil duct b6 is parallel with the center line of steel ball installation cavity and do not overlap, the other end of oil duct b6 communicates with an end of piston 2, the other end of piston 2 acts on plug screw 1, piston 2 matches with piston sleeve 3,
One end of piston sleeve 3 matches with valve pocket 5, be provided with spring eye between the other end of piston sleeve 3 and valve pocket 5, spring a4 is arranged in spring eye, the end of spring a4 acts on valve pocket 5, the other end of spring a4 acts on piston sleeve 3, and spool 25, valve pocket 5 and piston sleeve 3 surround oil pocket e10, are provided with circular groove on valve pocket 5, circular groove communicates with oilhole q24
Be provided with oil duct c7, oil duct d9 and damping hole 22 on valve pocket 5, the end of oil duct c7 communicates with oil duct d9, the other end of oil duct c7 is communicated with spring eye, the end of oil duct d9 communicates with oil pocket e10, and the other end of oil duct d9 communicates with circular groove, is provided with damping oil pocket 23 between spool 25 and valve pocket 5, oil duct h13 communicates with damping oil pocket 23 by damping hole 22, valve pocket 5 is provided with place and the end face seal of anti-reverse valve body of circular groove, and oil duct h13 communicates with spool oil duct 11
The utility model is simple and compact for structure, and is easy to connect.Only need will prevent that motor inertia from reversing and 4 actuator ports (as shown in Figure 2) of oscillation damping means, connect with corresponding motor oil inlet and outlet to get final product, and namely make oilhole o and oilhole q communicate with motor hydraulic fluid port A, and oilhole i and oilhole l communicate with motor hydraulic fluid port B.
Working principle of the present utility model:
Anti-reverse rotary valve is when the meta state, piston sleeve 3 is in left position and withstands piston 2 under the effect of spring a4, spool 25 also is in left position and withstands piston sleeve 3 under the effect of spring g12, the high-pressure work state reverses valve A when anti-and anti-reverse rotary valve B is the meta state when motor is in, piston sleeve 3 remained with spool 25 and contacted this moment, entered low pressure oil way without high pressure oil through anti-reverse rotary valve.be that filler opening and working state that motor hydraulic fluid port B is oil outlet are when switching to the braking halted state when oil hydraulic motor by motor hydraulic fluid port A, the oil inlet and outlet of motor is all controlled spool and is cut off, but because the effect of inertia of load can make oil hydraulic motor be rotated further, and then the oil channel sealing chamber of connecting fluid pressure motor oil inlet and outlet can produce pressure and changes, be that the oil channel sealing chamber of original connecting motor hydraulic fluid port A becomes the low pressure seal chamber because volume increases, and the oil channel sealing chamber of original connecting motor hydraulic fluid port B reduces to become high-pressure sealing chamber due to volume, the working state of anti-reverse rotary valve B is: the part high pressure oil is through oil-through hole i, oil duct h, the spool oil duct, steel ball 8, oil duct b enters oil pocket r, the spring force that the high pressure oil effect makes piston sleeve 3 overcome spring a moves right, and then spool 25 overcomes spring g under the effect of piston sleeve 3 spring force moves right, whole process piston sleeve 3 remains with spool 25 and contacts, enter the oil circuit at motor hydraulic fluid port A place through anti-reverse rotary valve B from motor hydraulic fluid port B without high pressure oil, when the motor inertia rotation is about to stop, pressure in oil pocket r descends gradually, thereby piston sleeve 3 is moved to the left under the spring-force driven dual of spring a, spool 25 is moved to the left under the effect of spring g, damping function due to damping hole 22, the movement of spool 25 produces time-lag action relative to moving of piston sleeve 3, therefore no longer keeping in touch with piston sleeve 3, spool 25 produces opening, make motor hydraulic fluid port B place oil circuit, by oilhole i, oil duct h, the spool oil duct, the opening of spool 25 and piston sleeve 3, oil duct d, circular groove 30, oilhole q communicates with motor hydraulic fluid port A place oil circuit, thereby the pressure of having realized the high low pressure Seal cage is consistent rapidly, make the pressure imbalance state that causes oil hydraulic motor to produce due to inertia load be eliminated, thereby reverse and dancing that motor produces due to inertia load have been solved.In like manner, when motor hydraulic fluid port B is that filler opening and motor hydraulic fluid port A are when being oil outlet, generation effect when anti-reverse rotary valve A can switch in working order, the pressure imbalance state that makes inertia load that motor is produced is eliminated, thereby has solved reverse and dancing that motor produces due to inertia load.
Claims (2)
1. prevent the damping device that motor inertia reverses and swings, it is characterized in that: comprise the anti-reverse valve body and be arranged on anti-reverse rotary valve A(15 on the anti-reverse valve body) and anti-reverse rotary valve B(27), be provided with oilhole q(24 on described anti-reverse valve body), oilhole o(21), oilhole l(18), oilhole i(14), oil duct h(13) and oil duct n(20), described oilhole q(24), oilhole o(21) all communicate with motor hydraulic fluid port A, described oilhole l(18) and oilhole i(14) all communicate with motor hydraulic fluid port B, described oil duct h(13) with oilhole i(14) communicate, described oil duct n(20) with oilhole o(21) communicate,
Described anti-reverse rotary valve A(15) and anti-reverse rotary valve B(27) structure is identical, include valve pocket (5), be successively set on the spring g(12 in valve pocket (5)), spool (25), steel ball (8), piston sleeve (3) and plug screw (1),
described spring g(12) a end is fixed on the anti-reverse valve body, its the other end is fixed on spool (25), be provided with the steel ball installation cavity between described spool (25) and piston sleeve (3), described steel ball (8) is arranged in the steel ball installation cavity, be provided with piston (2) and oil duct b in described piston sleeve (3), one end of described steel ball installation cavity be arranged on that spool oil duct (11) in spool (25) communicates and steel ball (8) can sealed valve core oil duct (11), the other end of described steel ball installation cavity and oil duct b(6) communicate, described oil duct b(6) parallel with the center line of steel ball installation cavity and do not overlap, described oil duct b(6) the other end communicates with an end of piston (2), the other end of described piston (2) acts on plug screw (1), described piston (2) matches with piston sleeve (3),
One end of described piston bush (3) matches with valve pocket (5), between the other end of described piston bush (3) and valve pocket (5), be provided with spring eye, spring a(4) be arranged in spring eye, described spring a(4) a end acts on valve pocket (5), described spring a(4) the other end acts on piston bush (3), described spool (25), valve pocket (5) and piston bush (3) surround oil pocket e(10), described valve pocket is provided with cannelure on (5), described cannelure and oilhole q(24) communicate
described valve pocket is provided with oil duct c(7 on (5)), oil duct d(9) and damping hole (22), described oil duct c(7) a end and oil duct d(9) the middle part communicate, described oil duct c(7) the other end is communicated with spring eye, described oil duct d(9) a end and oil pocket e(10) communicate, described oil duct d(9) the other end communicates with circular groove, be provided with damping oil pocket (23) between described spool (25) and valve pocket (5), described oil duct h(13) communicate with damping oil pocket (23) by damping hole (22), described valve pocket (5) is provided with place and the end face seal of anti-reverse valve body of circular groove, described oil duct h(13) communicate with spool oil duct (11),
Described anti-reverse rotary valve B(27) oilhole (18) and anti-reverse rotary valve A(15) circular groove communicate, anti-reverse rotary valve A(15) spool oil duct (11) and oil duct n(20) communicate, described oil duct n(20) by damping hole (22) and anti-reverse rotary valve A(15) damping oil pocket (23) communicate.
2. the damping device that prevents that motor inertia from reversing and swing according to claim 1 is characterized in that: described anti-reverse rotary valve A(15) and anti-reverse rotary valve B(27) be arranged on the both sides of anti-reverse valve body and be oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569729 CN202971414U (en) | 2012-10-31 | 2012-10-31 | Buffer device preventing inertia reversion and swing of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569729 CN202971414U (en) | 2012-10-31 | 2012-10-31 | Buffer device preventing inertia reversion and swing of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971414U true CN202971414U (en) | 2013-06-05 |
Family
ID=48512498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569729 Expired - Lifetime CN202971414U (en) | 2012-10-31 | 2012-10-31 | Buffer device preventing inertia reversion and swing of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742486A (en) * | 2014-01-07 | 2014-04-23 | 龙工（上海）精工液压有限公司 | Anti-reversal valve for excavator rotary motor |
| CN105909585A (en) * | 2016-03-03 | 2016-08-31 | 杭州力龙液压有限公司 | Anti-swing valve |
-
2012
- 2012-10-31 CN CN 201220569729 patent/CN202971414U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742486A (en) * | 2014-01-07 | 2014-04-23 | 龙工（上海）精工液压有限公司 | Anti-reversal valve for excavator rotary motor |
| CN105909585A (en) * | 2016-03-03 | 2016-08-31 | 杭州力龙液压有限公司 | Anti-swing valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |