CN103016435B - Valve for preventing hydraulic motor from reversing - Google Patents
Valve for preventing hydraulic motor from reversing Download PDFInfo
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- CN103016435B CN103016435B CN201210577623.6A CN201210577623A CN103016435B CN 103016435 B CN103016435 B CN 103016435B CN 201210577623 A CN201210577623 A CN 201210577623A CN 103016435 B CN103016435 B CN 103016435B
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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 engineering machinery, be especially applied in engineering machinery a kind of control valve of the hydraulic shock eliminated or prevent hydraulic rotary motor inertia from bringing, specifically one prevents oil hydraulic motor reversible valve.
Background technique
The compression shock that in engineering machinery, hydraulic rotary motor brings due to inertia in the process stopped and pressure surge can cause oil hydraulic motor moment positive and negatively alternately to rotate, this moment, positive and negative alternately rotation can cause the fluctuation of system hydraulic pressure suddenly to suddenly change, thus greatly reduce the pivotal manoeuvring performance of engineering machinery, even may damage other hydraulic unit of system, cause machine life to shorten.In prior art, people generally adopt rotary motor relief valve to limit rotary system, the effect of the buffering overflow that rotary motor relief valve plays within the specific limits, but relief valve is difficult to again be added on hydraulic rotary motor actuator port, therefore can not eliminate better, the compression shock of absorption liquid pressure motor actuator port, guarantee that main frame revolution reaches stable 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, lightweight, easy for installation and can directly be added on hydraulic rotary motor actuator port, eliminate, one that the compression shock of absorption liquid pressure motor actuator port reverses when preventing oil hydraulic motor from stopping prevent oil hydraulic motor reversible valve.
The present invention solves the problems of the technologies described above adopted technological scheme: one prevents oil hydraulic motor reversible valve, comprise transition block, transition block is shaped with respectively directly equipped first actuator port corresponding to oil hydraulic motor oil inlet and outlet and the second actuator port, transition block is shaped with at least two installation cavitys side by side simultaneously, unit trimmer valve is all fitted with in each installation cavity, what the first installation cavity and the diapire of the second installation cavity were shaped with that the first installation cavity is communicated with that first of the first actuator port is connected that oil duct and the second installation cavity be communicated with the second actuator port respectively second is connected oil duct, slide in unit trimmer valve and be provided with mangetic core assembly, and unit trimmer valve is shaped with the drain tap controlled by mangetic core assembly, be shaped with for being communicated with the first actuator port and the first pressure release passage of second unit trimmer valve drain tap and the second pressure release passage for being communicated with the second actuator port and first module trimmer valve drain tap in transition block respectively, first module trimmer valve and second unit trimmer valve are impacted by the hydraulic pressure fluctuation absorbing and balance the first actuator port and the second actuator port that moves up and down of inner spool assembly.
For optimizing technique scheme, the concrete measure taked also comprises:
Above-mentioned unit trimmer valve comprises valve body, mangetic core assembly and locking screw plug, mangetic core assembly slides and is fitted in 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, valve body is shaped with valve body outside thread, installation cavity is shaped with the internal thread suitable with valve body outside thread, and unit trimmer valve spiral is fitted in installation cavity, and on unit trimmer valve, cover is furnished with rubber gasket.
The valve pocket of above-mentioned valve body is that axially penetrating uuper valve chamber, valve-rod cavity and the lower valve chamber be from top to bottom communicated with successively forms, lower valve chamber is shaped with radial throttle orifice, valve-rod cavity expansion is shaped with annular channel, the drain path tilting to be communicated with drain tap is shaped with in this annular channel, be formed with the ring shaped oil passage being communicated with radial throttle orifice between the lower, outer perimeter face of valve body with the perisporium of installation cavity, and between the diapire of the bottom face of valve body and installation cavity, leave the gap oil duct communicated with ring shaped oil passage.
Above-mentioned mangetic core assembly comprises the upper valve core and lower valve core and valve ball that match, lower valve core is arranged in the lower valve chamber of valve body, and lower valve core is pressed with lower Returnning spring, one end apical grafting of this lower 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, annular stop plane phase apical grafting bottom the other end and uuper valve chamber, upper valve core slip liquid sealing is fitted with push rod.
Above-mentioned upper valve core is made up of the upper valve base on top and the upper valve rod of bottom, the axially extended push rod chamber of upper shed is shaped with in upper valve base, push rod is arranged in this push rod chamber and the bottom of push rod and matches with bottom surface, push rod chamber and be formed with hydraulic chamber, top and the locking screw plug phase apical grafting of push rod, the bottom end of upper valve rod is shaped with the upper valve rod cavity with tapering inclined-plane, and is shaped with the axially spool oil duct being communicated with upper valve rod cavity and hydraulic chamber in upper valve rod.
Above-mentioned lower valve core is made up 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 axially through 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 the end face of lower valve rod is shaped with and coordinates with upper valve rod cavity the arch shaped cavity forming unidirectional valve pocket, valve ball is 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 in the annular guide column of lower valve base, and annular top surface and the valve body lower valve chamber of lower valve base are formed with lower buffer cell, and the radial throttle orifice of lower valve chamber 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 made is positioned at lower valve rod, lower valve rod matches with annular channel and forms draining chamber, is shaped with the auxiliary oil channel being axially communicated with drain path and uuper valve chamber in valve body.
Above-mentioned upper reset spring is inserted in the lower locating face being fitted in upper valve base by upper valve rod, on lower locating face, pad is furnished with adjustment pad.
Above-mentioned lower valve rod and the side face of push rod are all shaped with the annular oil storage tank of lubricate.
Compared with prior art, the present invention is provided with two unit trimmer valves in transition block, two unit trimmer valves cooperatively interact and utilize the pressure surge moving up and down absorption liquid pressure motor oil inlet and outlet of valve body inner spool assembly, realize the steady stopping of oil hydraulic motor, prevent oil hydraulic motor from braking when stopping and reversing due to effect of inertia.Advantage of the present invention is: structure be bolted gather, volume is little, lightweight, easy for installation and can absorption system compression shock, prevent oil hydraulic motor from reverse, the working life of raising system hydraulic element and the manoeuvring performance of main frame.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of transition block in Fig. 1;
Fig. 3 is the structural representation of unit trimmer valve in Fig. 1;
Fig. 4 is the structural representation of valve body in Fig. 3;
Fig. 5 is the structural representation of mangetic core assembly in Fig. 3;
Fig. 6 is the structural representation of upper valve core in Fig. 5;
Fig. 7 is the structural representation of lower valve core in 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 is wherein: the first actuator port A, first connects oil duct A1, first pressure release passage A2, second actuator port B, second connects oil duct B1, 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, first installation cavity 11, 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, drain path 222, lower valve chamber 23, radial throttle orifice 23a, 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, axially spool oil duct 314, valve ball 32, lower valve core 33, lower valve base 331, lower valve rod 332, lower valve core oil duct 333, arch shaped 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.
As shown in Figures 1 to 7, one of the present invention prevents oil hydraulic motor reversible valve, comprise transition block 1, transition block 1 is shaped with respectively directly equipped first actuator port A and second actuator port B corresponding to oil hydraulic motor oil inlet and outlet, transition block 1 is shaped with at least two installation cavitys side by side, unit trimmer valve F is all fitted with in each installation cavity, what the first installation cavity 11 and the diapire of the second installation cavity 12 were shaped with that the first installation cavity 11 is communicated with that first of the first actuator port A is connected that oil duct A1 and the second installation cavity 12 be communicated with the second actuator port B respectively second is connected oil duct B1, slide in unit trimmer valve F and be provided with mangetic core assembly 3, and unit trimmer valve F is shaped with the drain tap K controlled by mangetic core assembly 3, be shaped with for being communicated with the first actuator port A and the first pressure release passage A2 of second unit trimmer valve F2 drain tap K and the second pressure release passage B2 for being communicated with the second actuator port B and first module trimmer valve F1 drain tap K in transition block 1 respectively, first module trimmer valve F1 and second unit trimmer valve F2 is impacted by the hydraulic pressure fluctuation absorbing and balance the first actuator port A and the second actuator port B that moves up and down of inner spool assembly 3.In prior art hydraulic rotary motor in the process stopped because the effect of inertia can cause oil hydraulic motor moment positive and negatively alternately to rotate, hydraulic pressure in hydraulic system is elevated suddenly 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 is directly respectively superposed respectively at the oil inlet and outlet of hydraulic rotary motor by transition block 1 and is provided with a unit trimmer valve F, mangetic core assembly 3 in range site trimmer valve F moving up and down when hydraulic shock absorbs a part of compression shock, simultaneously mangetic core assembly 3 motion and entered the oil inlet and outlet impact force of upper step balanced hydraulic rotary motor by the complementation of the first pressure release passage A2 in 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, reverse when preventing oil hydraulic motor from stopping.The present invention is simple for structure, easy accessibility, can directly be superimposed upon on hydraulic rotary motor actuator port, eliminates system pressure pulse, prevents oil hydraulic motor from reversing, thus improves the manoeuvring performance of system hydraulic pressure component life and main frame.
For optimizing product structure further, in embodiment, composition graphs 3 and Fig. 4 can find out, 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 valve pocket that valve body 2 is shaped with, the spiral seal of locking screw plug 4 is locked on the upper accent of valve pocket, and this locking screw plug 4 is set with rubber seal 5, valve body 2 is shaped with valve body outside thread 2a.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 coordinates spiral to be fitted in installation cavity by valve body outside thread 2a and internal thread 1a, and on unit trimmer valve F, cover is furnished with rubber gasket 6.Unit trimmer valve F of the present invention is half buried installation, the exposed outside in transition block 1, its rear portion.Locking screw plug 4 also has the effect of regulating spool assembly 3 preload pressure simultaneously.
In embodiment, as shown in Figure 4, the valve pocket of valve body 2 is the axial penetrating uuper valve chamber 21 be from top to bottom communicated with successively, valve-rod cavity 22 and lower valve chamber 23 form, lower valve chamber 23 is shaped with radial throttle orifice 23a, valve-rod cavity 22 expansion is shaped with annular channel 221, the drain path 222 tilting to be communicated with drain tap K is shaped with in this annular channel 221, as seen from Figure 1, unit trimmer valve F is when the installation cavity with transition block 1 is equipped with, the ring shaped oil passage C being communicated with radial throttle orifice 23a is formed between the lower, outer perimeter face of valve body 2 with the perisporium of installation cavity, and leave the gap oil duct D communicated with ring shaped oil passage C between the bottom face of valve body 2 and the diapire of installation cavity.
As shown in Figure 5, mangetic core assembly 3 of the present invention comprises the upper valve core 31 and lower valve core 33 and valve ball 32 that match, lower valve core 33 is arranged 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 lower 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, annular stop plane 211 phase apical grafting bottom the other end and uuper valve chamber 21, upper valve core 31 liquid sealing that slides is fitted with push rod 35.
In embodiment, as shown in Figure 6, upper valve core 31 is made up of the upper valve base 311 on top and the upper valve rod 312 of bottom, upper shed axially extended push rod chamber 31a is shaped with in upper valve base 311, push rod 35 is arranged in the 31a of this push rod chamber and the bottom of push rod 35 and matches with 31a bottom surface, push rod chamber and be formed with hydraulic chamber G, top and the locking screw plug 4 phase apical grafting of push rod 35, the bottom end of upper valve rod 312 is shaped with the upper valve rod cavity 313 with tapering inclined-plane, and is shaped with the axially spool oil duct 314 being communicated with upper valve rod cavity 313 and hydraulic chamber G in upper valve rod 312.Push rod 35 resembles a piston rod, and upper valve core 31 and lower valve core 33 increase promotion by push rod 35 with the rigidity apical grafting of locking screw plug 4 and the hydraulic pressure of hydraulic chamber G and move down.
As shown in Figure 7, lower valve core 33 of the present invention is made up 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 axially through 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 the end face of lower valve rod 332 is shaped with the arch shaped cavity 334 coordinating with upper valve rod cavity 313 and form unidirectional valve pocket H, valve ball 32 is fitted in the unidirectional valve pocket H of upper valve rod 312 and the formation of lower valve rod 332 apical grafting.
In embodiment, upper valve rod 312 and lower valve rod 332 apical grafting are in the valve-rod cavity 22 of valve body 2, valve-rod cavity 22 expands the load segment that the annular channel 221 made is positioned at 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 being axially communicated with drain path 222 and uuper valve chamber 21 in valve body 2.
Can see from Fig. 1, Fig. 3 and Fig. 5, lower Returnning spring 36 is sleeved in the annular guide column 335 of lower valve base 331, and annular top surface and valve body 2 lower valve chamber 23 of lower valve base 331 are formed with lower buffer cell E, and the radial throttle orifice 23a of lower valve chamber is positioned at lower buffer cell E.The lower buffer cell E compression shock that can absorb the oil inlet and outlet of a part of hydraulic rotary motor identical with hydraulic chamber G, simultaneously radial throttle orifice 23a can make lower valve core 33 upwards reset under the effect of lower Returnning spring 36 bounce-back time, due to radial throttle orifice 23a throttling action, make lower valve core 33 reset speed slow relative to upper valve core 31, thus cause upper valve core 31 and of short duration being separated of lower valve core 33, make hydraulic pressure in hydraulic chamber G through axially spool oil duct 314, unidirectional valve pocket H, draining chamber M, drain path 222 flows out drain tap K, flowing into the first actuator port A through the first pressure release passage A2 or flowing into the second actuator port B through the second pressure release passage B2.
Upper reset spring 34 of the present invention is inserted in the lower locating face being fitted in upper valve base 311 by upper valve rod 312, on lower locating face, pad is furnished with adjustment pad 37.
As shown in Figure 3 and Figure 7, the side face of lower valve rod 332 and push rod 35 is all shaped with the annular oil storage tank N of lubricate.
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 is the actuator port for oil hydraulic motor, first actuator port A is oil outlet, second actuator port B is filler opening, as cut-out A, B actuator port oil hydraulic motor is shut down into, oil hydraulic motor can remain in operation due to inertia, now oil hydraulic motor becomes the work of pump principle, correspondingly A mouth becomes pressure oil port, now the compression shock of A mouth is 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 promotes upper valve core 31 to moving down, lower valve core 33 also moves down with moving to of upper valve core 31, the movement of upper valve core 31 can absorb a part of compression shock, when A mouth pressure gets back to the active force lower than Returnning spring, upper valve core 31 and lower valve core 33 move up respectively under the effect of upper reset spring 34 and lower Returnning spring 36, but because the fluid in 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 discharge entering lower buffer cell E will through radial throttle orifice 23a, therefore lower valve core 33 speed of moving up compares the slow of upper valve core 31 movement, the separation process that one of short duration is had between upper valve core 31 and lower valve core 33, this separation process can make the pressure oil of A mouth have a small amount of inflow B mouth, thus eliminate the pressure surge of A mouth, the pressure of A mouth is steadily declined until oil hydraulic motor stops completely.
Claims (6)
1. one kind prevents oil hydraulic motor reversible valve, comprise transition block (1), described transition block is shaped with respectively directly equipped first actuator port (A) corresponding to oil hydraulic motor oil inlet and outlet and the second actuator port (B), it is characterized in that: described transition block (1) is shaped with at least two installation cavitys side by side, unit trimmer valve (F) is all fitted with in each described installation cavity, first installation cavity (11) and the diapire of the second installation cavity (12) are shaped with the first installation cavity (11) respectively and are communicated with first of the first actuator port (A) and are connected oil duct (A1) and are communicated with second of the second actuator port (B) with the second installation cavity (12) and are connected oil duct (B1), slide in 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) controlled by mangetic core assembly (3), be shaped with for being communicated with the first actuator port (A) and first pressure release passage (A2) of second unit trimmer valve (F2) drain tap (K) and the second pressure release passage (B2) for being communicated with the second actuator port (B) and first module trimmer valve (F1) drain tap (K) in described transition block (1) respectively, described first module trimmer valve (F1) and second unit trimmer valve (F2) are impacted by the hydraulic pressure fluctuation absorbing and balance the first actuator port (A) and the second actuator port (B) that moves up and down of inner spool assembly (3), 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 is fitted in 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), described valve body (2) is shaped with valve body outside thread (2a), described installation cavity is shaped with the internal thread (1a) suitable with valve body outside thread (2a), described unit trimmer valve (F) spiral is fitted in installation cavity, and the upper cover of unit trimmer valve (F) is furnished with rubber gasket (6), the valve pocket of described valve body (2) is the axial penetrating uuper valve chamber (21) be from top to bottom communicated with successively, valve-rod cavity (22) and lower valve chamber (23) composition, described lower valve chamber (23) is shaped with radial throttle orifice (23a), described valve-rod cavity (22) expansion is shaped with annular channel (221), the drain path (222) tilting to be communicated with drain tap (K) is shaped with in this annular channel (221), the ring shaped oil passage (C) being communicated with radial throttle orifice (23a) is formed between the lower, outer perimeter face of described valve body (2) with the perisporium of installation cavity, and leave the gap oil duct (D) communicated with ring shaped oil passage (C) between the bottom face of valve body (2) and the diapire of installation cavity, described mangetic core assembly (3) comprises the upper valve core (31) and lower valve core (33) and valve ball (32) that match, described lower valve core (33) is arranged 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 lower 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), 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 and uuper valve chamber (21) bottom, described upper valve core (31) slip liquid sealing is fitted with push rod (35), described upper valve core (31) is made up of the upper valve base (311) on top and the upper valve rod (312) of bottom, the axially extended push rod chamber (31a) of upper shed is shaped with in described upper valve base (311), described push rod (35) is arranged in this push rod chamber (31a) and the bottom of push rod (35) and matches with push rod chamber (31a) bottom surface and be formed with hydraulic chamber (G), top and locking screw plug (4) the phase apical grafting of described push rod (35), the bottom end of described upper valve rod (312) is shaped with the upper valve rod cavity (313) with tapering inclined-plane, and be shaped with the axially spool oil duct (314) being communicated with upper valve rod cavity (313) and hydraulic chamber (G) in upper valve rod (312), when oil hydraulic motor shuts down by cut-out first actuator port (A), the second actuator port (B), oil hydraulic motor can remain in operation due to inertia, now oil hydraulic motor becomes the work of pump principle, correspondingly the first actuator port (A) becomes pressure oil port, now the compression shock of the first actuator port (A) is very large, and pressure oil is pushed valve ball (32) open enter hydraulic chamber (G) along the first connection oil duct (A1), lower valve core oil duct (333).
2. one according to claim 1 prevents oil hydraulic motor reversible valve, it is characterized in that: described lower valve core (33) is made up 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 axially through 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 the end face of lower valve rod (332) is shaped with the arch shaped cavity (334) coordinating with upper valve rod cavity (313) and form unidirectional valve pocket (H), described valve ball (32) is fitted in the unidirectional valve pocket (H) of upper valve rod (312) and the formation of lower valve rod (332) apical grafting.
3. one according to claim 2 prevents oil hydraulic motor reversible valve, it is characterized in that: described lower Returnning spring (36) is sleeved in the annular guide column (335) of lower valve base (331), annular top surface and valve body (2) lower valve chamber (23) of described lower valve base (331) are formed with lower buffer cell (E), and the radial throttle orifice (23a) of described lower valve chamber (23) is positioned at lower buffer cell (E).
4. one according to claim 3 prevents oil hydraulic motor reversible valve, 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) made is positioned at lower valve rod (332), described lower valve rod (332) matches with annular channel (221) and forms draining chamber (M), the auxiliary oil channel (24) being axially communicated with drain path (222) and uuper valve chamber (21) is shaped with in described valve body (2).
5. one according to claim 4 prevents oil hydraulic motor reversible valve, it is characterized in that: described upper reset spring (34) is inserted in the lower locating face being fitted in upper valve base (311) by upper valve rod (312), on described lower locating face, pad is furnished with adjustment pad (37).
6. one according to claim 5 prevents oil hydraulic motor reversible valve, it is characterized in that: the annular oil storage tank (N) described lower valve rod (332) and the side face of push rod (35) being all shaped with lubricate.
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 CN103016435A (en) | 2013-04-03 |
| CN103016435B true 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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| 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 |
| 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 |
| KR102092481B1 (en) * | 2018-12-19 | 2020-04-20 | 주식회사 두산 | Reversing prevention valve for a construction vehicle |
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| CN201818576U (en) * | 2010-10-18 | 2011-05-04 | 印辉 | Two-stage pressure rotary cushion valve |
| CN202414994U (en) * | 2011-12-30 | 2012-09-05 | 宁波凯荣船用机械有限公司 | Hang-up buffering oil line for turning device of crane |
| CN202545393U (en) * | 2012-03-06 | 2012-11-21 | 沈阳中之杰流体控制系统有限公司 | Double-balanced brake control function valve bank of motor |
| CN203404149U (en) * | 2012-12-27 | 2014-01-22 | 宁波广天赛克思液压有限公司 | Valve for preventing inverted rotation of hydraulic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016435A (en) | 2013-04-03 |
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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. |