CN103016435A - Valve for preventing hydraulic motor from reversing - Google Patents
Valve for preventing hydraulic motor from reversing Download PDFInfo
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- CN103016435A CN103016435A CN2012105776236A CN201210577623A CN103016435A CN 103016435 A CN103016435 A CN 103016435A CN 2012105776236 A CN2012105776236 A CN 2012105776236A CN 201210577623 A CN201210577623 A CN 201210577623A CN 103016435 A CN103016435 A CN 103016435A
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Abstract
The invention discloses a valve for preventing a hydraulic motor from reversing. The valve for preventing the hydraulic motor from reversing comprises a transition block. The transition block is provided with a first working port and a second working port which respectively correspond to an oil inlet and an oil outlet of the hydraulic motor; the transition block is provided with two installation cavities; a unit cushion valve is assembled in each installation cavity; the bottom wall of a first installation cavity and the bottom wall of a second installation cavity are respectively provided with a first connecting oil duct and a second connecting oil duct, wherein the first oil duct is used for enabling the first installation cavity to be communicated with the first working port, and the second connecting oil duct is used for enabling the second installation cavity to be communicated with the second working port; a valve core assembly is arranged in each unit cushion valve; a drainage port controlled by the valve core assembly is arranged in the corresponding unit cushion valve; a first decompression channel and a second decompression channel are respectively arranged in the transition block, wherein the first decompression channel is used for communicating the first working port with the drainage port of a second unit cushion valve, and the second decompression channel is used for communicating the second working port with the drainage port of a first unit cushion valve; the first unit cushion valve and the second unit cushion valve are used for absorbing and balancing hydraulic fluctuation shocks of the first working port and the second working port through the up-and-down motions of the internal valve core assemblies.
Description
Technical field
The present invention relates to technical field of hydraulic in the engineering machinery, especially be applied to eliminate or prevent in the engineering machinery a kind of control valve of the hydraulic shock that hydraulic rotary motor inertia brings, specifically a kind of oil hydraulic motor reversible valve that prevents.
Background technique
The compression shock that hydraulic rotary motor brings owing to inertia in the process that stops on the engineering machinery and pressure surge meeting cause oil hydraulic motor positive and negative alternately rotation of moment, the positive and negative alternately rotation of this moment can cause suddenly sudden change of system's hydraulic pressure fluctuation, thereby greatly reduce the rotating manoeuvring performance of engineering machinery, even may damage other hydraulic unit of system, cause machine life to shorten.In the prior art, people generally adopt the rotary motor relief valve to limit rotary system, the effect of the buffering overflow that the rotary motor relief valve plays within the specific limits, but relief valve is difficult to again be added on the hydraulic rotary motor actuator port, therefore can not eliminate better, the compression shock of absorption liquid pressure motor actuator port, guarantee that the main frame revolution reaches the stably effect of stopping.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, and provide structure to be bolted to gather, volume is little, on lightweight, the easy for installation and hydraulic rotary motor actuator port that can directly be added to, eliminate, a kind of oil hydraulic motor reversible valve that prevents of counter-rotating when the compression shock of absorption liquid pressure motor actuator port prevents that oil hydraulic motor from stopping.
The present invention solves the problems of the technologies described above the technological scheme that adopts: a kind of oil hydraulic motor reversible valve that prevents, comprise transition block, transition block is shaped with respectively directly corresponding equipped the first actuator port and the second actuator port with the oil hydraulic motor oil inlet and outlet, be shaped with side by side at least two installation cavitys on the transition block simultaneously, all be fitted with the unit trimmer valve in each installation cavity, the first installation cavity be connected the diapire of installation cavity and be shaped with respectively the first installation cavity and be communicated with first of the first actuator port and connect oil duct and be connected installation cavity and be communicated with second of the second actuator port and connect oil duct, slide in the unit trimmer valve and be provided with mangetic core assembly, and the unit trimmer valve is shaped with the drain tap that is subjected to mangetic core assembly control, be shaped with respectively in the transition block for being communicated with the first actuator port with the first pressure release passage of second unit trimmer valve drain tap with for the second pressure release passage that is communicated with the second actuator port and first module trimmer valve drain tap, first module trimmer valve and second unit trimmer valve absorb by moving up and down of inner spool assembly and the hydraulic pressure fluctuation of balance the first actuator port and the second actuator port is impacted.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned unit trimmer valve comprises valve body, mangetic core assembly and locking screw plug, mangetic core assembly slides and to be fitted in the valve pocket that valve body is shaped with, the spiral seal of locking screw plug is locked on the upper accent of valve pocket, this locking screw plug is set with rubber seal, be shaped with the valve body outside thread on the valve body, assembly cavity is shaped with the internal thread suitable with the valve body outside thread, and unit trimmer valve spiral is fitted in the installation cavity, and cover is furnished with rubber gasket on the unit trimmer valve.
The valve pocket of above-mentioned valve body is that axially the penetrating uuper valve chamber that from top to bottom is communicated with successively, valve-rod cavity and lower valve chamber form, lower valve chamber is shaped with radially throttle orifice, the valve-rod cavity expansion is shaped with annular channel, be shaped with the draining passage that tilts to be communicated with drain tap in this annular channel, be formed with between the lower, outer perimeter face of valve body and the perisporium of installation cavity and be communicated with the radially ring shaped oil passage of throttle orifice, and leave the gap oil duct that communicates with ring shaped oil passage between the diapire of the bottom face of valve body and installation cavity.
Above-mentioned mangetic core assembly comprises upper valve core and lower valve core and the valve ball that matches, lower valve core is installed in the lower valve chamber of valve body, and lower valve core is pressed with lower Returnning spring, one end apical grafting of this time Returnning spring is on the lower valve base of lower valve core, the diapire phase apical grafting of the other end and installation cavity, upper valve core is set with upper reset spring, one end apical grafting of this upper reset spring is on the upper valve base of upper valve core, the annular stop plane phase apical grafting of the other end bottom uuper valve chamber, upper valve core slip liquid sealing is fitted with push rod.
Above-mentioned upper valve core is comprised of the upper valve base on top and the upper valve rod of bottom, be shaped with the axially extended push rod of upper shed chamber in the upper valve base, push rod is installed in this push rod chamber and match with bottom surface, push rod chamber in the bottom of push rod is formed with hydraulic chamber, the top of push rod and locking screw plug phase apical grafting, the top end of upper valve rod is shaped with the upper valve rod cavity with the tapering inclined-plane, and is shaped with the axial upper valve core oil duct that is communicated with upper valve rod cavity and hydraulic chamber in the upper valve rod.
Above-mentioned lower valve core is comprised of lower valve base and lower valve rod, the inside of this lower valve core is shaped with the lower valve core oil duct of axial perforation lower valve base and lower valve rod, the end face periphery of lower valve rod matches with the tapering inclined-plane liquid sealing apical grafting of upper valve rod cavity, and being shaped with on the end face of lower valve rod with the upper valve rod cavity cooperates the arc cavity that consists of unidirectional valve pocket, valve ball to be fitted in the unidirectional valve pocket of upper valve rod and the formation of lower valve rod apical grafting.
Above-mentioned lower Returnning spring is sleeved on the annular guide column of lower valve base, and the annular top surface of lower valve base and valve body lower valve chamber are formed with lower buffer cell, and lower valve chamber radially throttle orifice is positioned at lower buffer cell.
Above-mentioned upper valve rod and lower valve rod apical grafting are in the valve-rod cavity of valve body, valve-rod cavity expands the load segment that the annular channel of making is positioned at lower valve rod, lower valve rod matches with annular channel and forms the draining chamber, is shaped with the auxiliary oil channel of axial connection draining passage and uuper valve chamber in the valve body.
Above-mentioned upper reset spring is inserted in the lower locating face that is fitted in upper valve base by upper valve rod, and pad is furnished with the adjusting pad on the lower locating face.
All be shaped with the annular oil storage tank of lubricate on above-mentioned lower valve rod and the side face of push rod.
Compared with prior art, the present invention is equipped with two unit trimmer valves in transition block, two unit trimmer valves cooperatively interact and utilize the pressure surge that moves up and down absorption liquid pressure motor oil inlet and outlet of valve body inner spool assembly, realize steadily stopping of oil hydraulic motor, prevent that oil hydraulic motor from braking when stopping owing to effect of inertia reverses.Advantage of the present invention is: structure is bolted and gathers, volume is little, lightweight, easy for installation and energy absorption system compression shock, prevents the oil hydraulic motor counter-rotating, improves the working life of system's hydraulic element and the manoeuvring performance of main frame.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of transition block among Fig. 1;
Fig. 3 is the structural representation of unit trimmer valve among Fig. 1;
Fig. 4 is the structural representation of valve body among Fig. 3;
Fig. 5 is the structural representation of mangetic core assembly among Fig. 3;
Fig. 6 is the structural representation of upper valve core among Fig. 5;
Fig. 7 is the structural representation of lower valve core among Fig. 5.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is to Figure 7 shows that structural representation of the present invention.
Reference character wherein is: the first actuator port A, first connects oil duct A1, the first pressure release passage A2, the second actuator port B, second connects oil duct B1, the second pressure release passage B2, ring shaped oil passage C, gap oil duct D, lower buffer cell E, unit trimmer valve F, first module trimmer valve F1, second unit trimmer valve F2, hydraulic chamber G, unidirectional valve pocket H, drain tap K, draining chamber M, annular oil storage tank N, transition block 1, internal thread 1a, the first installation cavity 11, the second installation cavity 12, valve body 2, valve body outside thread 2a, uuper valve chamber 21, annular stop plane 211, valve-rod cavity 22, annular channel 221, draining passage 222, lower valve chamber 23, throttle orifice 23a radially, auxiliary oil channel 24, mangetic core assembly 3, upper valve core 31, push rod chamber 31a, upper valve base 311, upper valve rod 312, upper valve rod cavity 313, axial upper valve core oil duct 314, valve ball 32, lower valve core 33, lower valve base 331, lower valve rod 332, lower valve core oil duct 333, arc cavity 334, annular guide column 335, upper reset spring 34, push rod 35, lower Returnning spring 36, regulate pad 37, locking screw plug 4, rubber seal 5, rubber gasket 6.
Extremely shown in Figure 7 such as Fig. 1, a kind of oil hydraulic motor reversible valve that prevents of the present invention, comprise transition block 1, transition block 1 is shaped with respectively directly corresponding equipped the first actuator port A and the second actuator port B with the oil hydraulic motor oil inlet and outlet, be shaped with side by side at least two installation cavitys on the transition block 1, all be fitted with unit trimmer valve F in each installation cavity, the first installation cavity 11 be connected the diapire of installation cavity 12 and be shaped with respectively the first installation cavity 11 and be communicated with first of the first actuator port A and connect oil duct A1 and be connected installation cavity 12 and be communicated with second of the second actuator port B and connect oil duct B1, slide in the unit trimmer valve F and be provided with mangetic core assembly 3, and unit trimmer valve F is shaped with the drain tap K that is subjected to mangetic core assembly 3 controls, transition block 1 interior being shaped with respectively for being communicated with the first actuator port A with the first pressure release passage A2 of second unit trimmer valve F2 drain tap K with for the second pressure release passage B2 that is communicated with the second actuator port B and first module trimmer valve F1 drain tap K, first module trimmer valve F1 and second unit trimmer valve F2 absorb by moving up and down of inner spool assembly 3 and the hydraulic pressure fluctuation of balance the first actuator port A and the second actuator port B is impacted.Hydraulic rotary motor effect owing to inertia in the process that stops can to cause oil hydraulic motor positive and negative alternately rotation of moment in the prior art, make the interior hydraulic pressure of hydraulic system suddenly lifting and positive and negative alternately impinge, this impact can cause the damage of system element, reduces the manoeuvring performance of machinery rotation.The present invention respectively superposes respectively by transition block 1 direct oil inlet and outlet at hydraulic rotary motor a unit trimmer valve F is installed, mangetic core assembly 3 in the range site trimmer valve F moving up and down when hydraulic shock absorbs a part of compression shock, the simultaneously motion of mangetic core assembly 3 and the oil inlet and outlet impact force of advancing balanced hydraulic rotary motor of upper step by the complementation of the first pressure release passage A2 in the transition block 1 and a small amount of draining of the second pressure release passage B2, realize the compression shock of elimination, absorption liquid pressure motor oil inlet and outlet, prevent from reversing when oil hydraulic motor from stopping.The present invention is simple for structure, and easy accessibility can directly be superimposed upon on the hydraulic rotary motor actuator port, eliminates the system pressure pulse, prevents the oil hydraulic motor counter-rotating, thereby improves the manoeuvring performance of system's hydraulic pressure component life and main frame.
For further optimizing product structure, among the embodiment, can find out in conjunction with Fig. 3 and Fig. 4, unit trimmer valve F comprises valve body 2, mangetic core assembly 3 and locking screw plug 4, mangetic core assembly 3 slides and is fitted in the valve pocket that valve body 2 is shaped with, 4 spiral seals of locking screw plug are locked on the upper accent of valve pocket, and this locking screw plug 4 is set with rubber seal 5, is shaped with valve body outside thread 2a on the valve body 2.As shown in Figure 2, the installation cavity of transition block 1 is shaped with the internal thread 1a suitable with valve body outside thread 2a, and unit trimmer valve F cooperates spiral to be fitted in the installation cavity by valve body outside thread 2a and internal thread 1a, and trimmer valve F upper cover in unit is furnished with rubber gasket 6.Unit trimmer valve F of the present invention is half buried installation, and its rear portion exposes the outside in transition block 1.Locking screw plug 4 also has the effect of regulating spool assembly 3 preload pressures simultaneously.
Among the embodiment, as shown in Figure 4, the valve pocket of valve body 2 is the axial penetrating uuper valve chamber 21 that from top to bottom is communicated with successively, valve-rod cavity 22 and lower valve chamber 23 form, lower valve chamber 23 is shaped with radially throttle orifice 23a, valve-rod cavity 22 expansions are shaped with annular channel 221, be shaped with the draining passage 222 that tilts to be communicated with drain tap K in this annular channel 221, as seen from Figure 1, unit trimmer valve F is when equipped with the installation cavity of transition block 1, be formed with between the lower, outer perimeter face of valve body 2 and the perisporium of installation cavity and be communicated with the radially ring shaped oil passage C of throttle orifice 23a, and leave the gap oil duct D that communicates with ring shaped oil passage C between the diapire of the bottom face of valve body 2 and installation cavity.
As shown in Figure 5, mangetic core assembly 3 of the present invention comprises upper valve core 31 and lower valve core 33 and the valve ball 32 that matches, lower valve core 33 is installed in the lower valve chamber 23 of valve body 2, and lower valve core 33 is pressed with lower Returnning spring 36, one end apical grafting of this time Returnning spring 36 is on the lower valve base 331 of lower valve core 33, the diapire phase apical grafting of the other end and installation cavity, upper valve core 31 is set with upper reset spring 34, one end apical grafting of this upper reset spring 34 is on the upper valve base 311 of upper valve core 31, the annular stop plane 211 phase apical graftings of the other end and uuper valve chamber 21 bottoms, upper valve core 31 slip liquid sealings are fitted with push rod 35.
Among the embodiment, as shown in Figure 6, upper valve core 31 is comprised of the upper valve base 311 on top and the upper valve rod 312 of bottom, be shaped with the axially extended push rod of upper shed chamber 31a in the upper valve base 311, push rod 35 is installed among the 31a of this push rod chamber and match with 31a bottom surface, push rod chamber in the bottom of push rod 35 is formed with hydraulic chamber G, the top of push rod 35 and locking screw plug 4 phase apical graftings, the top end of upper valve rod 312 is shaped with the upper valve rod cavity 313 with the tapering inclined-plane, and is shaped with the axial upper valve core oil duct 314 that is communicated with upper valve rod cavity 313 and hydraulic chamber G in the upper valve rod 312.Push rod 35 resembles a piston rod, and upper valve core 31 and lower valve core 33 promote to move down by the rigidity apical grafting of push rod 35 and locking screw plug 4 and the hydraulic pressure increase of hydraulic chamber G.
As shown in Figure 7, lower valve core 33 of the present invention is comprised of lower valve base 331 and lower valve rod 332, the inside of this lower valve core 33 is shaped with the lower valve core oil duct 333 of axial perforation lower valve base 331 and lower valve rod 332, the end face periphery of lower valve rod 332 matches with the tapering inclined-plane liquid sealing apical grafting of upper valve rod cavity 313, and being shaped with on the end face of lower valve rod 332 with upper valve rod cavity 313 cooperates the arc cavity 334 that consists of unidirectional valve pocket H, valve ball 32 to be fitted among the unidirectional valve pocket H of upper valve rod 312 and the formation of lower valve rod 332 apical graftings.
Among the embodiment, upper valve rod 312 and lower valve rod 332 apical graftings are in the valve-rod cavity 22 of valve body 2, the annular channel 221 that valve-rod cavity 22 expands system is positioned at the load segment of lower valve rod 332, lower valve rod 332 matches with annular channel 221 and forms draining chamber M, is shaped with the auxiliary oil channel 24 of axial connection draining passage 222 and uuper valve chamber 21 in the valve body 2.
Can see that from Fig. 1, Fig. 3 and Fig. 5 lower Returnning spring 36 is sleeved on the annular guide column 335 of lower valve base 331, the annular top surface of lower valve base 331 and valve body 2 lower valve chambers 23 are formed with lower buffer cell E, and lower valve chamber radially throttle orifice 23a is positioned at lower buffer cell E.The identical compression shock that can absorb the oil inlet and outlet of a part of hydraulic rotary motor with hydraulic chamber G of lower buffer cell E, when radially throttle orifice 23a can make lower valve core 33 upwards reset bounce-back under the effect of lower Returnning spring 36 simultaneously, because throttle orifice 23a throttling action radially, make the relative upper valve core of lower valve core 33 reset speeds 31 slow, thereby cause upper valve core 31 and lower valve core 33 of short duration separating, make hydraulic pressure warp beam among the hydraulic chamber G to upper valve core oil duct 314, unidirectional valve pocket H, draining chamber M, draining passage 222 flows out drain tap K, is flowing into the first actuator port A through the first pressure release passage A2 or is flowing into the second actuator port B through the second pressure release passage B2.
Such as Fig. 3 and shown in Figure 7, all be shaped with the annular oil storage tank N of lubricate on the side face of lower valve rod 332 and push rod 35.
Working principle of the present invention is: as shown in Figure 1, suppose that the first actuator port A and the second actuator port B are for being the actuator port of oil hydraulic motor, the first actuator port A is oil outlet, the second actuator port B is filler opening, when cutting off A, the B actuator port with oil hydraulic motor shut down into, oil hydraulic motor can remain in operation owing to inertia, this moment, oil hydraulic motor became the work of pump principle, correspondingly the A mouth becomes the pressure hydraulic fluid port, this moment, the compression shock of A mouth was very large, pressure oil connects oil duct A1 along first, lower valve core oil duct 333 is pushed valve ball 32 open and is entered hydraulic chamber G, overcome upper reset spring 34 and lower Returnning spring 36 promotion upper valve cores 31 to moving down, lower valve core 33 also with the movement of upper valve core 31 to moving down, the movement of upper valve core 31 can absorb a part of compression shock, when the A mouth pressure is got back to the active force that is lower than Returnning spring, upper valve core 31 and lower valve core 33 move up under the effect of upper reset spring 34 and lower Returnning spring 36 respectively, but because the fluid among the hydraulic chamber G of upper valve core 31 is discharged without throttle orifice, what therefore upper valve core 31 moved up is fast, and the oil that enters lower buffer cell E discharge will be through throttle orifice 23a radially, therefore lower valve core 33 speed of moving up are compared slow that upper valve core 31 moves, an of short duration separation process is arranged between upper valve core 31 and the lower valve core 33, this separation process meeting is so that the pressure oil of A mouth has a small amount of inflow B mouth, thereby eliminated the pressure surge of A mouth, the pressure of A mouth is steadily descended until oil hydraulic motor stops fully.
Claims (10)
1. one kind prevents the oil hydraulic motor reversible valve, comprise transition block (1), described transition block is shaped with respectively directly corresponding equipped the first actuator port (A) and the second actuator port (B) with the oil hydraulic motor oil inlet and outlet, it is characterized in that: described transition block is shaped with at least two installation cavitys on (1) side by side, all be fitted with unit trimmer valve (F) in each described installation cavity, described the first installation cavity (11) be connected the diapire of installation cavity (12) and be shaped with respectively the first installation cavity (11) and be communicated with first of the first actuator port (A) and connect the second connection oil duct (B1) that oil duct (A1) and the installation cavity (12) of being connected are communicated with the second actuator port (B), slide in the described unit trimmer valve (F) and be provided with mangetic core assembly (3), and unit trimmer valve (F) is shaped with the drain tap (K) that is subjected to mangetic core assembly (3) control, be shaped with respectively in the described transition block (1) for being communicated with the first actuator port (A) with first pressure release passage (A2) of second unit trimmer valve (F2) drain tap (K) with for being communicated with second pressure release passage (B2) of the second actuator port (B) with first module trimmer valve (F1) drain tap (K), described first module trimmer valve (F1) and second unit trimmer valve (F2) absorb by moving up and down of inner spool assembly (3) and the hydraulic pressure fluctuation of balance the first actuator port (A) and the second actuator port (B) is impacted.
2. a kind of oil hydraulic motor reversible valve that prevents according to claim 1, it is characterized in that: described unit trimmer valve (F) comprises valve body (2), mangetic core assembly (3) and locking screw plug (4), described mangetic core assembly (3) slides and to be fitted in the valve pocket that valve body (2) is shaped with, described locking screw plug (4) spiral seal is locked on the upper accent of valve pocket, this locking screw plug (4) is set with rubber seal (5), be shaped with valve body outside thread (2a) on the described valve body (2), described assembly cavity is shaped with the internal thread (1a) suitable with valve body outside thread (2a), described unit trimmer valve (F) spiral is fitted in the installation cavity, and the upper cover of unit trimmer valve (F) is furnished with rubber gasket (6).
3. a kind of oil hydraulic motor reversible valve that prevents according to claim 2, it is characterized in that: the valve pocket of described valve body (2) is the axial penetrating uuper valve chamber (21) that is communicated with successively from top to bottom, valve-rod cavity (22) and lower valve chamber (23) form, described lower valve chamber (23) is shaped with radially throttle orifice (23a), described valve-rod cavity (22) expansion is shaped with annular channel (221), be shaped with the draining passage (222) that tilts to be communicated with drain tap (K) in this annular channel (221), be formed with between the lower, outer perimeter face of described valve body (2) and the perisporium of installation cavity and be communicated with the radially ring shaped oil passage (C) of throttle orifice (23a), and leave the gap oil duct (D) that communicates with ring shaped oil passage (C) between the diapire of the bottom face of valve body (2) and installation cavity.
4. a kind of oil hydraulic motor reversible valve that prevents according to claim 3, it is characterized in that: described mangetic core assembly (3) comprises upper valve core (31) and lower valve core (33) and the valve ball (32) that matches, described lower valve core (33) is installed in the lower valve chamber (23) of valve body (2), and lower valve core (33) is pressed with lower Returnning spring (36), one end apical grafting of this time Returnning spring (36) is on the lower valve base (331) of lower valve core (33), the diapire phase apical grafting of the other end and installation cavity, described upper valve core (31) is set with upper reset spring (34), the one end apical grafting of this upper reset spring (34) is on the upper valve base (311) of upper valve core (31), annular stop plane (211) the phase apical grafting of the other end bottom uuper valve chamber (21), described upper valve core (31) slip liquid sealing is fitted with push rod (35).
5. a kind of oil hydraulic motor reversible valve that prevents according to claim 4, it is characterized in that: described upper valve core (31) is comprised of the upper valve base (311) on top and the upper valve rod (312) of bottom, be shaped with the axially extended push rod of upper shed chamber (31a) in the described upper valve base (311), described push rod (35) is installed in this push rod chamber (31a) and match with bottom surface, push rod chamber (31a) in the bottom of push rod (35) is formed with hydraulic chamber (G), the top of described push rod (35) and locking screw plug (4) phase apical grafting, the top end of described upper valve rod (312) is shaped with the upper valve rod cavity (313) with the tapering inclined-plane, and is shaped with the axial upper valve core oil duct (314) that is communicated with upper valve rod cavity (313) and hydraulic chamber (G) in the upper valve rod (312).
6. a kind of oil hydraulic motor reversible valve that prevents according to claim 5, it is characterized in that: described lower valve core (33) is comprised of lower valve base (331) and lower valve rod (332), the inside of this lower valve core (33) is shaped with the lower valve core oil duct (333) of axial perforation lower valve base (331) and lower valve rod (332), the end face periphery of described lower valve rod (332) matches with the tapering inclined-plane liquid sealing apical grafting of upper valve rod cavity (313), and being shaped with on the end face of lower valve rod (332) with upper valve rod cavity (313) cooperates the arc cavity (334) that consists of unidirectional valve pocket (H), described valve ball (32) to be fitted in the unidirectional valve pocket (H) of upper valve rod (312) and the formation of lower valve rod (332) apical grafting.
7. a kind of oil hydraulic motor reversible valve that prevents according to claim 6, it is characterized in that: described lower Returnning spring (36) is sleeved on the annular guide column (335) of lower valve base (331), the annular top surface of described lower valve base (331) and valve body (2) lower valve chamber (23) are formed with lower buffer cell (E), and described lower valve chamber radially throttle orifice (23a) is positioned at lower buffer cell (E).
8. a kind of oil hydraulic motor reversible valve that prevents according to claim 7, it is characterized in that: described upper valve rod (312) and lower valve rod (332) apical grafting are in the valve-rod cavity (22) of valve body (2), described valve-rod cavity (22) expands the load segment that the annular channel (221) of making is positioned at lower valve rod (332), described lower valve rod (332) matches with annular channel (221) and forms draining chamber (M), is shaped with the auxiliary oil channel (24) of axial connection draining passage (222) and uuper valve chamber (21) in the described valve body (2).
9. a kind of oil hydraulic motor reversible valve that prevents according to claim 8, it is characterized in that: described upper reset spring (34) is inserted in the lower locating face that is fitted in upper valve base (311) by upper valve rod (312), and pad is furnished with adjusting pad (37) on the described lower locating face.
10. a kind of oil hydraulic motor reversible valve that prevents according to claim 9 is characterized in that: the annular oil storage tank (N) that all is shaped with lubricate on the side face of described lower valve rod (332) and push rod (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577623.6A CN103016435B (en) | 2012-12-27 | 2012-12-27 | Valve for preventing hydraulic motor from reversing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577623.6A CN103016435B (en) | 2012-12-27 | 2012-12-27 | Valve for preventing hydraulic motor from reversing |
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| Publication Number | Publication Date |
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| CN103016435A true CN103016435A (en) | 2013-04-03 |
| CN103016435B CN103016435B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210577623.6A Active CN103016435B (en) | 2012-12-27 | 2012-12-27 | Valve for preventing hydraulic motor from reversing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321987A (en) * | 2013-06-17 | 2013-09-25 | 龙工（上海）精工液压有限公司 | Hydraulic motor buffer control mechanism |
| 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 |
| 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 |
| CN104595271A (en) * | 2015-01-29 | 2015-05-06 | 南京萨伯工业设计研究院有限公司 | Anti-swing control method suitable for bidirectional hydraulic loop |
| CN108571488A (en) * | 2017-03-13 | 2018-09-25 | 上海融德机电工程设备有限公司 | Pulsed hydraulic pressure divides synchronous valve |
| CN111336291A (en) * | 2018-12-19 | 2020-06-26 | 株式会社斗山 | Reverse rotation preventing valve of rotary motor for engineering equipment |
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| CN103321987A (en) * | 2013-06-17 | 2013-09-25 | 龙工（上海）精工液压有限公司 | Hydraulic motor buffer control mechanism |
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| 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 |
| CN104595271A (en) * | 2015-01-29 | 2015-05-06 | 南京萨伯工业设计研究院有限公司 | Anti-swing control method suitable for bidirectional hydraulic loop |
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| CN108571488B (en) * | 2017-03-13 | 2024-01-23 | 上海融德机电工程设备有限公司 | Pulse type hydraulic partial pressure synchronous valve |
| CN111336291A (en) * | 2018-12-19 | 2020-06-26 | 株式会社斗山 | Reverse rotation preventing valve of rotary motor for engineering equipment |
| CN111336291B (en) * | 2018-12-19 | 2022-03-29 | 股份公司摩拓乐 | Reverse rotation preventing valve of rotary motor for engineering equipment |
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Address after: Jiangbei District, Zhejiang city of Ningbo Province China 315021 Street No. 195 Patentee after: SAIKESI HYDRAULIC TECHNOLOGY CO., LTD. Address before: Jiangbei District, Zhejiang city of Ningbo Province China 315021 Street No. 195 Patentee before: Ningbo Wide Sky SKS Hydraulic Co., Ltd. |