CN108825818B - Anti-slip control valve for non-road vehicle - Google Patents

Anti-slip control valve for non-road vehicle Download PDF

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Publication number
CN108825818B
CN108825818B CN201810983595.5A CN201810983595A CN108825818B CN 108825818 B CN108825818 B CN 108825818B CN 201810983595 A CN201810983595 A CN 201810983595A CN 108825818 B CN108825818 B CN 108825818B
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valve
hole
flow
port
valve body
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CN108825818A (en
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不公告发明人
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LIXIN VALVE GROUP Co.,Ltd.
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Lixin Valve Group Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K8/00—Arrangement or mounting of propulsion units not provided for in one of the preceding main groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The invention provides an anti-skid control valve for a non-road vehicle, comprising: the valve comprises a valve body, a reversing valve core, a left end cover, a right end cover, a spring, a valve sleeve, a left flow valve core, a first left spring seat, a second left spring seat, a first left retaining ring, a second left retaining ring, a left spring, a right flow valve core, a first right spring seat, a second right spring seat, a first right retaining ring, a second right retaining ring and a right spring. The anti-slip control valve for the non-road vehicle provided by the embodiment of the invention has the advantages of reasonable and simple structure and high cost performance.

Description

Anti-slip control valve for non-road vehicle
Technical Field
The present invention relates to a hydraulic valve, and in particular to an anti-skid control valve for off-road vehicles.
Background
Non-road machines with three-track or three-tire traveling devices, such as cement slip form pavers, mostly adopt hydraulic motors to drive the traveling. During construction, if the road conditions are uneven, a certain crawler belt or a tire will be in a suspended state, the simple parallel walking hydraulic driving system enables a hydraulic motor on the suspended walking device to be in a short circuit on a hydraulic oil road, the walking device slips, the pressure of the whole walking hydraulic system drops instantly, and the cement slip form paver cannot walk normally. If the oil inlet and outlet amount of a hydraulic motor which is positioned on a suspended crawler belt or a tire is controlled by adopting the flow dividing and collecting valve, the problem that a certain walking device cannot walk due to suspension can be solved, but when the cement slip form paver turns with a small radius, the walking device on the outer side controlled by the flow dividing and collecting valve can drag and rotate, and the cement slip form paver cannot walk normally.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide an anti-skid control valve for off-road vehicles that is structurally sound, simple and cost effective.
An anti-skid control valve for off-road vehicles according to an embodiment of the present invention includes:
the valve body, link up about having on the valve body the first valve body through-hole of valve body and being located link up about and above the first valve body through-hole the second valve body through-hole of valve body, first valve body through-flow groove, second valve body through-flow groove and third valve body through-flow groove from a left side to right interval arrangement have on the internal perisporium of first valve body through-hole, have on the internal perisporium of second valve body through-hole from a left side to right interval arrangement fourth valve body through-flow groove, fifth valve body through-flow groove and sixth valve body through-flow groove, have on the valve body and communicate the first runner of first valve body through-flow groove with fourth valve body through-flow groove, communicate the second runner of second valve body through-flow groove with fifth valve body through-flow groove and communicate the third runner of third valve body through-flow groove with the sixth valve body through-flow groove, still have on the lateral wall of valve body first hydraulic fluid port, The first oil port is communicated with the second valve body through flow groove, the second oil port is communicated with the fourth valve body through flow groove, and the third oil port is communicated with the sixth valve body through flow groove;
the reversing valve core is arranged in the first valve body through hole in a left-right moving mode and is provided with a first reversing valve core blind hole with a left opening and a second reversing valve core blind hole with a right opening;
the left end cover is arranged on the left side surface of the valve body and is used for respectively sealing the left opening of the first valve body through hole and the left opening of the second valve body through hole, and a fourth oil port is formed in the left side surface of the left end cover and is communicated with the left opening of the first valve body through hole;
the right end cover is arranged on the right side surface of the valve body and is used for respectively sealing a right opening of the first valve body through hole and a right opening of the second valve body through hole, and a fifth oil port is formed in the right side surface of the right end cover and is communicated with the right opening of the first valve body through hole;
the spring is arranged in the through hole of the first valve body and positioned on the left surface of the reversing valve core, the left end of the spring abuts against the left end cover, the right end of the spring extends into the blind hole of the first reversing valve core to abut against the reversing valve core, and the spring normally pushes the reversing valve core to the right so that the right end of the reversing valve core abuts against the right end cover;
the valve barrel, the valve barrel can be controlled and is established in the second valve body through-hole with moving, link up the valve barrel through-hole of valve barrel about having on the valve barrel, the intercommunication has on the lateral wall of valve barrel the first valve barrel through-hole and the second valve barrel through-hole, the intercommunication of interval arrangement about the valve barrel through-hole and the intercommunication of fifth valve body through-hole about the valve barrel through-hole and the third valve body through-hole and the fourth valve barrel through-hole of interval arrangement about the valve barrel through-hole, first valve barrel through-hole with the second valve barrel through-hole usually with the fourth valve body through-hole intercommunication, the third valve body through-hole with the fourth valve barrel through-hole usually with the sixth valve body through-hole intercommunication, the fifth valve barrel through-hole and the sixth valve barrel through-hole of interval arrangement about having on the valve barrel through-hole, the left end of valve barrel through-hole has left hole enlargement hole section and the right-end of valve barrel, the left hole expanding section is located on the left surface of the through hole of the first valve sleeve, the right hole expanding section is located on the right surface of the through hole of the fourth valve sleeve, a left feedback cavity is defined between the left end surface of the valve sleeve and the left end cover in the through hole of the second valve body, and a right feedback cavity is defined between the right end surface of the valve sleeve and the right end cover;
the left flow valve core is arranged in the valve sleeve through hole in a left-right moving mode, the left flow valve core is provided with a first blind hole with a left opening, a left flow valve core through groove is formed in the side wall of the left flow valve core, a first through hole for communicating the left flow valve core through groove with the first blind hole is formed in the left flow valve core through groove, the left end of the left flow valve core is provided with a left reducing section matched with the left expanding hole section, and a first throttling hole for communicating the valve sleeve through groove with the first blind hole is formed in the side wall of the right end of the left flow valve core;
the first left spring seat is sleeved on the left reducing section;
the second left spring seat is sleeved on the left reducing section and is positioned on the left surface of the first left spring seat;
the first left retainer ring is fixedly arranged on the left expanding hole section and is positioned on the left surface of the second left spring seat;
the second left retainer ring is fixedly arranged on the left reducing section and is positioned on the left surface of the second left spring seat;
the left spring is sleeved on the left reducing section, the right end of the left spring abuts against the first left spring seat so that the right end face of the first left spring seat always abuts against the step face of the left reducing section and the step face of the left expanding hole section, the left end of the left spring abuts against the second left spring seat so that the left end face of the second left spring seat always abuts against the first left retainer ring and the second left retainer ring, and at the moment, the left flow valve core through-flow groove is located between the first valve sleeve through-flow hole and the second valve sleeve through-flow hole and is closed by the valve sleeve;
the right flow valve core is arranged in the valve sleeve through hole in a left-right moving mode and is positioned on the right side of the left flow valve core, the right flow valve core is provided with a second blind hole with a right opening, a right flow valve core through groove is formed in the side wall of the right flow valve core, a second through hole for communicating the right flow valve core through groove with the second blind hole is formed in the right flow valve core through groove, the right end of the right flow valve core is provided with a right reducing section matched with the right expanding hole section, and a second throttling hole for communicating the valve sleeve through groove with the second blind hole is formed in the side wall of the left end of the right flow valve core;
the first right spring seat is sleeved on the right reducing section;
the second right spring seat is sleeved on the right reducing section and is positioned on the right surface of the first right spring seat;
the first right retainer ring is fixedly arranged on the right expanding hole section and is positioned on the right surface of the second right spring seat;
the second right retainer ring is fixedly arranged on the right reducing section and is positioned on the left surface of the second right spring seat;
the right spring is sleeved on the right reducing section, the left end of the right spring abuts against the first right spring seat so that the left end face of the first right spring seat always abuts against the step face of the right reducing section and the step face of the right expanding hole section, the right end of the right spring abuts against the second right spring seat so that the right end face of the second right spring seat always abuts against the first right retainer ring and the second right retainer ring, and at the moment, the right flow valve core through-flow groove is positioned between the third valve sleeve through-flow hole and the fourth valve sleeve through-flow hole and is closed by the valve sleeve;
the diverter spool is switchable between a first position and a second position.
Advantageously, when the direction change valve core is in the first position, the elastic force of the spring is greater than the pressure from the fifth oil port, and the spring pushes the direction change valve core to the right to make the right end of the direction change valve core abut against the right end cover, and at the moment, the direction change valve core makes the first valve body through flow groove, the second valve body through flow groove and the third valve body through flow groove communicate.
Advantageously, when the direction change valve spool is in the second position, the spring force of the spring is less than the pressure from the fifth port, and the direction change valve spool moves leftward to compress the spring, at which time the direction change valve spool disconnects the first valve body flow passage from the second valve body flow passage and disconnects the second valve body flow passage from the third valve body flow passage.
Advantageously, if oil flows from the first port to the second port and from the first port to the third port, the left flow valve core moves to the left with respect to the valve housing and the right flow valve core moves to the right with respect to the valve housing.
Advantageously, if the pressure of the second port is greater than the pressure of the third port, the valve sleeve moves rightward relative to the valve body until the flow from the first port to the second port is equal to the flow from the first port to the third port.
Advantageously, if the pressure of the second port is lower than the pressure of the third port, the valve sleeve moves leftwards relative to the valve body until the flow from the first port to the second port is equal to the flow from the first port to the third port.
Advantageously, if oil flows from the second port to the first port and from the third port to the first port, the left flow valve spool moves to the right with respect to the valve housing and the right flow valve spool moves to the left with respect to the valve housing.
Advantageously, if the pressure of the second port is greater than the pressure of the third port, the valve sleeve moves rightwards relative to the valve body until the flow of the second port from the third port to the first port is equal to the flow of the second port from the third port to the first port.
Advantageously, if the pressure of the second port is lower than the pressure of the third port, the valve sleeve moves leftwards relative to the valve body until the flow rate of the second port from the third port to the first port is equal to the flow rate of the second port from the third port to the first port.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a block diagram of an anti-skid control valve for off-road vehicles in a free wheel control state according to an embodiment of the present invention;
FIG. 2 is a block diagram of a flow equalization valve assembly for an anti-skid control valve for off-road vehicles according to an embodiment of the present invention;
FIG. 3 is a hydraulic schematic of an anti-skid control valve for an off-road vehicle according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an application scenario of an anti-skid control valve for an off-road vehicle according to an embodiment of the present invention;
FIG. 5 is another block diagram of an anti-skid control valve for an off-road vehicle in one position of anti-skid control according to an embodiment of the present invention;
FIG. 6 is another block diagram of an anti-slip control valve for an off-road vehicle in another position of anti-slip control according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An anti-slip control valve for an off-road vehicle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, an anti-slip control valve for an off-road vehicle according to an embodiment of the present invention includes: the valve comprises a valve body 2, a reversing valve core 6, a left end cover 1a, a right end cover 1b, a spring 7, a valve sleeve 5, a left flow valve core 4a, a first left spring seat 9a, a second left spring seat 9b, a first left retainer ring 8a, a second left retainer ring 8b, a left spring 3a, a right flow valve core 4b, a first right spring seat 9c, a second right spring seat 9d, a first right retainer ring 8c, a second right retainer ring 8d and a right spring 3 b.
Specifically, the valve body 2 has a first valve body through hole penetrating the valve body 2 in the left-right direction and a second valve body through hole positioned above the first valve body through hole and penetrating the valve body 2 in the left-right direction. The inner peripheral wall of the first valve body through hole is provided with a first valve body through flow groove 201, a second valve body through flow groove 202 and a third valve body through flow groove 203 which are arranged from left to right at intervals. The inner peripheral wall of the second valve body through hole is provided with a fourth valve body through flow groove 204, a fifth valve body through flow groove 205 and a sixth valve body through flow groove 206 which are arranged at intervals from left to right. The valve body 2 has a first flow passage 207 for communicating the first valve body flow passage 201 with the fourth valve body flow passage 204, a second flow passage 208 for communicating the second valve body flow passage 202 with the fifth valve body flow passage 205, and a third flow passage 209 for communicating the third valve body flow passage 203 with the sixth valve body flow passage 206. The side wall of the valve body 2 is further provided with a first oil port P, a second oil port a and a third oil port B, the first oil port P is communicated with the second valve body through flow groove 202, the second oil port a is communicated with the fourth valve body through flow groove 204, and the third oil port B is communicated with the sixth valve body through flow groove 206.
The reversing valve core 6 is arranged in the first valve body through hole in a left-right moving mode, and a first reversing valve core blind hole with a left opening and a second reversing valve core blind hole with a right opening are formed in the reversing valve core 6.
The left end cover 1a is arranged on the left side surface of the valve body 2 and used for respectively sealing the left opening of the first valve body through hole and the left opening of the second valve body through hole, a fourth oil port T is arranged on the left side surface of the left end cover 1a, and the fourth oil port T is communicated with the left opening of the first valve body through hole.
The right end cover 1b is arranged on the right side face of the valve body 2 and used for respectively sealing the right opening of the first valve body through hole and the right opening of the second valve body through hole, a fifth oil port X is formed in the right side face of the right end cover 1b and communicated with the right opening of the first valve body through hole.
The spring 7 is arranged in the through hole of the first valve body and is positioned on the left surface of the reversing valve core 6, the left end of the spring 7 is abutted against the left end cover 1a, the right end of the spring 7 extends into the blind hole of the first reversing valve core to be abutted against the reversing valve core 6, and the spring 7 normally pushes the reversing valve core 6 to the right so that the right end of the reversing valve core 6 is abutted against the right end cover 1 b.
Valve barrel 5 is established with moving about in the second valve body through-hole, has the valve barrel through-hole that link up valve barrel 5 about on the valve barrel 5, has the intercommunication on the lateral wall of valve barrel 5 the valve barrel through-hole just controls the first valve barrel through-hole 51 and the second valve barrel through-hole 52 of interval arrangement, the valve barrel through-hole groove 501 of intercommunication fifth valve body through-hole groove 205 and the intercommunication the third valve body through-hole 53 and the fourth valve barrel through-hole 54 of interval arrangement about the valve barrel through-hole. The first and second valve housing flow openings 51 and 52 are in communication with a fourth valve body flow opening 204, the third and fourth valve housing flow openings 53 and 54 are in communication with a sixth valve body flow opening 206, and the valve housing flow opening 501 has a fifth and sixth valve housing flow opening 55 and 56 spaced left and right. The left end of the valve sleeve through hole is provided with a left diameter-expanding hole section, the right end of the valve sleeve through hole is provided with a right diameter-expanding hole section, the left diameter-expanding hole section is located on the left side of the first valve sleeve through hole 51, and the right diameter-expanding hole section is located on the right side of the fourth valve sleeve through hole 54. In the second valve body through hole, a left feedback cavity 2a is defined between the left end surface of the valve sleeve 5 and the left end cover 7a, and a right feedback cavity 2b is defined between the right end surface of the valve sleeve 5 and the right end cover 7 b.
The left flow valve core 4a is arranged in the valve sleeve through hole in a left-right moving mode, the left flow valve core 4a is provided with a first blind hole 4a2 with a left opening, the side wall of the left flow valve core 4a is provided with a left flow valve core through hole 4a4, the left flow valve core through hole 4a4 is provided with a first through hole 4a3 for communicating the left flow valve core through hole 4a4 with the first blind hole 4a2, the left end of the left flow valve core 4a is provided with a left reducing section matched with the left expanding hole section, and the side wall of the right end of the left flow valve core 4a is provided with a first throttling hole 4a1 for communicating the valve sleeve through hole 501 with the first blind hole 4a 2.
And a first left spring seat 9a is sleeved on the left reducing section.
And the second left spring seat 9b is sleeved on the left reducing section and is positioned on the left surface of the first left spring seat 9 a.
And the first left retainer ring 8a is fixedly arranged on the left expanding hole section and is positioned on the left surface of the second left spring seat 9 b.
And a second left retainer ring 8b is fixedly arranged on the left reducing section and is positioned on the left surface of the second left spring seat 9 b.
The left spring 3a is sleeved on the left reducing section, the right end of the left spring 3a abuts against the first left spring seat 9a so that the right end face of the first left spring seat 9a always abuts against the step face of the left reducing section and the step face of the left expanding hole section, and the left end of the left spring 3a abuts against the second left spring seat 9b so that the left end face of the second left spring seat 9b always abuts against the first left retainer ring 8a and the second left retainer ring 8 b. At this time, the left flow valve core through-flow slot 4a4 is located between the first and second valve sleeve through- flow holes 51 and 52 and is closed by valve sleeve 5.
The right flow valve core 4b is arranged in the valve sleeve through hole in a manner of moving left and right and is positioned at the right side of the left flow valve core 4 a. The right flow valve core 4b is provided with a second blind hole 4b2 with a right opening, the side wall of the right flow valve core 4b is provided with a right flow valve core through groove 4b4, the right flow valve core through groove 4b4 is provided with a second through hole 4b3 for communicating the right flow valve core through groove 4b4 and the second blind hole 4b2, the right end of the right flow valve core 4b is provided with a right reducing section matched with the right expanding hole section, and the side wall of the left end of the right flow valve core 4b is provided with a second throttling hole 4b1 for communicating the valve sleeve through groove 501 and the second blind hole 4b 2.
And a first right spring seat 9c is sleeved on the right reducing section.
And the second right spring seat 9d is sleeved on the right reducing section and is positioned on the right surface of the first right spring seat 9 c.
And the first right retainer ring 8c is fixedly arranged on the right diameter-expanding hole section and is positioned on the right surface of the second right spring seat 9 d.
And a second right retainer ring 8d is fixedly arranged on the right reducing section and is positioned on the right surface of the second right spring seat 9 d.
The right spring 3b is sleeved on the right reducing section, the left end of the right spring 3b abuts against the first right spring seat 9c so that the left end face of the first right spring seat 9c always abuts against the step face of the right reducing section and the step face of the right expanding hole section, and the right end of the right spring 3b abuts against the second right spring seat 9d so that the right end face of the second right spring seat 9d always abuts against the first right retainer ring 8c and the second right retainer ring 8 d. At this time, the right flow valve core flow passage 4b4 is located between the third and fourth valve sleeve flow openings 53 and 54 and is closed by the valve sleeve 5.
The diverter spool 6 is switchable between a first position and a second position.
More specifically, when the direction change valve core 6 is in the first position, the elastic force of the spring 7 is greater than the pressure from the fifth port X, and the spring 7 pushes the direction change valve core 6 to the right so that the right end of the direction change valve core 6 abuts against the right end cap 1b, at this time, the direction change valve core 6 communicates the first valve body through flow groove 201, the second valve body through flow groove 202, and the third valve body through flow groove 203. That is, the anti-slip control valve for an off-road vehicle according to the embodiment of the present invention has a "free wheel" function at this time.
When the direction change valve spool 6 is in the second position, the elastic force of the spring 7 is smaller than the pressure from the fifth port X, and the direction change valve spool 6 moves leftward to compress the spring 7, at this time, the direction change valve spool 6 disconnects the first valve body flow passage 201 from the second valve body flow passage 202 and disconnects the second valve body flow passage 202 from the third valve body flow passage 203. That is, the anti-slip control valve for the off-road vehicle according to the embodiment of the present invention has the "anti-slip" function at this time.
When the valve is in the anti-slip function, if the oil flows from the first port P to the second port a and from the first port P to the third port B, the left flow valve core 4a moves leftward relative to the valve sleeve 5 and the right flow valve core 4B moves rightward relative to the valve sleeve 5. If the pressure of the second port a is greater than the pressure of the third port B, the valve sleeve 5 moves rightward relative to the valve body 2 until the flow from the first port P to the second port a is equal to the flow from the first port P to the third port B. If the pressure of the second port a is less than the pressure of the third port B, the valve sleeve 5 moves leftward relative to the valve body 2 until the flow rate from the first port P to the second port a is equal to the flow rate from the first port P to the third port B.
When the valve is in the anti-slip function, if the oil flows from the second port a to the first port P and from the third port B to the first port P, the left flow valve core 4a moves rightward relative to the valve sleeve 5 and the right flow valve core 4B moves leftward relative to the valve sleeve 5. If the pressure of the second port a is greater than the pressure of the third port B, the valve sleeve 5 moves rightward relative to the valve body 2 until the flow from the second port a to the first port P is equal to the flow from the third port to the first port. If the pressure of the second port a is lower than the pressure of the third port B, the valve sleeve 5 moves leftward relative to the valve body 2 until the flow from the second port a to the first port P is equal to the flow from the third port B to the first port P.
In other words, the anti-slip control valve for off-road vehicles according to the embodiment of the present invention includes a valve body 2, a direction switching valve spool 6, a spring 7, a left end cap 1a, a right end cap 1b, and a flow equalization valve assembly.
The flow equalizing valve assembly comprises a valve sleeve 5, a left flow valve core 4a, a first left spring seat 9a, a second left spring seat 9b, a left spring 3a, a first left retainer ring 8a, a second left retainer ring 8b, a right flow valve core 4b, a first right spring seat 9c, a second right spring seat 9d, a right spring 3b, a first right retainer ring 8c and a second right retainer ring 8 d.
As shown in fig. 4, in application, the first port P and one port of the first traveling motor 12 are connected to one port of the bidirectional closed hydraulic pump 10, the second port a and the third port B of the present invention are respectively connected to one ports of the second traveling motor 13 and the third traveling motor 14, and the other ports of the first traveling motor 12, the second traveling motor 13 and the third traveling motor 14 are connected to the other port of the bidirectional closed hydraulic pump 10. The fifth oil port X of the invention is communicated with the outlet of the control pump 11, and the fourth oil port T directly returns to the oil tank.
The invention has two functions of 'free wheel' and 'anti-slip'. The method comprises the following specific steps:
(1) when the non-road machine turns before entering a small-radius curve, the fifth oil port X is not supplied with oil or is in a lower pressure state, the reversing valve core 6 works at the position shown in fig. 1 under the action of the spring 7, and at the moment, the second oil port a is directly communicated with the first oil port P through the fourth valve body through flow groove 204, the first flow channel 207 and the first valve body through flow groove 201; the third port B is directly communicated with the first port P through a sixth valve body through flow groove 206, a third flow passage 209, and a third valve body through flow groove 203. No matter how the bidirectional closed hydraulic pump 10 turns, the first oil port P is directly communicated with the second oil port a and the third oil port B, so that the second traveling motor 13 and the third traveling motor 14 are in a free wheel state, the bidirectional closed hydraulic pump 10 provides flow according to the rotating speeds of the first traveling motor 12, the second traveling motor 13 and the third traveling motor 14, and the traveling motor on the outer side cannot drag and rotate.
(2) When the non-road machine walks under a severe working condition and one of the second walking motor 13 and the third walking motor 14 corresponding to the walking device is in a suspended state, the pressure of the fifth oil port X is controlled to rise, and the reversing valve core 6 is pushed to reverse to the position shown in the figures 5 and 6, so that the anti-slip function is realized. The method comprises the following specific steps:
after the reversing valve core 6 moves to the left end position, the communication between the first oil port P and the first valve body through flow groove 201 and the communication between the first oil port P and the third valve body through flow groove 203 are cut off, and the oil of the first oil port P can only be communicated with the second oil port a and the third oil port B through the flow balance valve assembly.
If the bidirectional closed hydraulic pump 10 is in the forward rotation state that is the state of outputting the oil to the first port P, the oil of the first port P passes through the second flow passage 208, the fifth valve housing through-flow hole 55 and the sixth valve housing through-flow hole 56 and then enters the inner cavity of the valve housing 5, then the flow is divided into 2 paths, and the path enters a second oil port A after passing through a first throttling hole 4a1, a first blind hole 4a2, a first through flow hole 4a3, a left flow valve core through flow groove 4a4, a first valve sleeve through flow hole 51 and a second valve sleeve through flow hole 52, because the first throttle orifice 4a1 has a pressure difference between its front and rear sides, i.e., between the first port P and the left feedback chamber 2a, this pressure difference pushes the left flow spool 4a to move leftward against the action of the left spring 3a to the position shown in fig. 5, at which the second sleeve through-hole 52 is covered, and the first blind hole 4a2 can only communicate with the first sleeve through-hole 51 through the left flow spool through-groove 4a 4; the other path enters the third port B through the second throttle hole 4B1, the second blind hole 4B2, the second through-flow hole 4B3, the right flow valve core through-flow groove 4B4, the third valve sleeve through-flow hole 53 and the fourth valve sleeve through-flow hole 54, because the second throttle hole 4B1 acts to make a pressure difference before and after it, that is, a pressure difference exists between the first port P and the right feedback chamber 2B, the pressure difference pushes the right flow valve core 4B to move to the right to the position shown in fig. 5 against the action of the right spring 3B, at this time, the third valve sleeve through-flow hole 53 is covered, and the second blind hole 4B2 can only communicate with the fourth valve sleeve through-flow hole 54 through the right flow valve core through-flow groove 4B 4. At this time, if a slipping condition occurs, that is, one port of the second port a and the third port B has a lower load, if the pressure of the third port B is significantly lower than the pressure of the second port a, the pressure of the left feedback chamber 2a is greater than the pressure of the right feedback chamber 2B, the valve sleeve 5 moves rightward under the pressure difference between the left feedback chamber 2a and the right feedback chamber 2B, so that the communication area between the fourth valve sleeve through hole 54 and the fifth valve body through flow groove 205 is reduced, until the pressures of the left feedback chamber 2a and the right feedback chamber 2B are equal to reach a balanced state, and because the diameters of the first throttle hole 4a1 and the second throttle hole 4B1 are equal, the pressure difference between the front and the back of the first throttle hole 4a1 and the second throttle hole 4B1 is equal, the flow rates of the second port a and the third port B are equal, and the flow rate of the first port P cannot completely flow into the third port B to cause a slipping condition in the third traveling motor, the second travel motor 13 always has a flow rate flowing in to drive the travel. If the pressure of the second port A is obviously lower than that of the third port B, the working principle is similar.
If the bidirectional closed hydraulic pump 10 is in reverse rotation, that is, when the oil in the second oil port a and the oil in the third oil port B flow into the first oil port P, as shown in fig. 6, due to the action of the first throttle hole 4a1, a pressure difference exists between the left feedback chamber 2a and the first oil port P, the left flow valve core 4a moves to the right under the action of the pressure difference to close the first valve sleeve through hole 51, and the oil in the second oil port a can only be communicated with the left flow valve core through hole 4a4 through the second valve sleeve through hole 52; similarly, due to the action of the second orifice 4B1, a pressure difference exists between the right feedback chamber 2B and the first port P, the right flow valve core 4B moves to the right under the action of the pressure difference to close the fourth valve sleeve through-hole 54, and the oil of the third port B can only be communicated with the left flow valve core through-hole 4B4 through the third valve sleeve through-hole 53; at this time, if a slipping condition occurs, the corresponding port pressure is also high due to the large flow rate of the slipping traveling motor, and if the pressure of the third port B is significantly lower than the pressure of the second port a, the pressure of the left feedback chamber 2a is greater than the pressure of the right feedback chamber 2B, the valve sleeve 5 moves to the right under the pressure difference between the left feedback chamber 2a and the right feedback chamber 2B, so that the communication area between the second valve sleeve through hole 52 and the third valve body flow passage 203 is reduced, the flow rate flowing into the left feedback chamber 2a is reduced, the pressure of the left feedback chamber 2a is reduced, until the pressures of the left feedback chamber 2a and the right feedback chamber 2B are equal to reach a balanced state, and because the diameters of the first throttle hole 4a1 and the second throttle hole 4B1 are equal, the pressure difference between the first throttle hole 4a1 and the second throttle hole 4B1 is equal, the flow rates flowing into the first port P from the second port a and the third port B are equal, the flow will not flow into the second oil port a completely and enter the second traveling motor 13 to cause a slip condition, and the third traveling motor 14 always has the flow to flow into the driving traveling. If the pressure of the second port A is obviously lower than that of the third port B, the working principle is similar.
In conclusion, the invention can realize two functions of 'free wheel' and 'anti-slip' control, can realize the random switching of 2 functions through the fifth oil port X, has convenient control, can realize the anti-slip function and can prevent the dragging phenomenon of turning through the free wheel function, and has reasonable and simple structure and high cost performance.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments without departing from the scope of the present invention.

Claims (9)

1. An anti-skid control valve for an off-road vehicle, comprising:
the valve body, link up about having on the valve body the first valve body through-hole of valve body and being located link up about and above the first valve body through-hole the second valve body through-hole of valve body, first valve body through-flow groove, second valve body through-flow groove and third valve body through-flow groove from a left side to right interval arrangement have on the internal perisporium of first valve body through-hole, have on the internal perisporium of second valve body through-hole from a left side to right interval arrangement fourth valve body through-flow groove, fifth valve body through-flow groove and sixth valve body through-flow groove, have on the valve body and communicate the first runner of first valve body through-flow groove with fourth valve body through-flow groove, communicate the second runner of second valve body through-flow groove with fifth valve body through-flow groove and communicate the third runner of third valve body through-flow groove with the sixth valve body through-flow groove, still have on the lateral wall of valve body first hydraulic fluid port, The first oil port is communicated with the second valve body through flow groove, the second oil port is communicated with the fourth valve body through flow groove, and the third oil port is communicated with the sixth valve body through flow groove;
the reversing valve core is arranged in the first valve body through hole in a left-right moving mode and is provided with a first reversing valve core blind hole with a left opening and a second reversing valve core blind hole with a right opening;
the left end cover is arranged on the left side surface of the valve body and is used for respectively sealing the left opening of the first valve body through hole and the left opening of the second valve body through hole, and a fourth oil port is formed in the left side surface of the left end cover and is communicated with the left opening of the first valve body through hole;
the right end cover is arranged on the right side surface of the valve body and is used for respectively sealing a right opening of the first valve body through hole and a right opening of the second valve body through hole, and a fifth oil port is formed in the right side surface of the right end cover and is communicated with the right opening of the first valve body through hole;
the spring is arranged in the through hole of the first valve body and positioned on the left surface of the reversing valve core, the left end of the spring abuts against the left end cover, the right end of the spring extends into the blind hole of the first reversing valve core to abut against the reversing valve core, and the spring normally pushes the reversing valve core to the right so that the right end of the reversing valve core abuts against the right end cover;
the valve barrel, the valve barrel can be controlled and is established in the second valve body through-hole with moving, link up the valve barrel through-hole of valve barrel about having on the valve barrel, the intercommunication has on the lateral wall of valve barrel the first valve barrel through-hole and the second valve barrel through-hole, the intercommunication of interval arrangement about the valve barrel through-hole and the intercommunication of fifth valve body through-hole about the valve barrel through-hole and the third valve body through-hole and the fourth valve barrel through-hole of interval arrangement about the valve barrel through-hole, first valve barrel through-hole with the second valve barrel through-hole usually with the fourth valve body through-hole intercommunication, the third valve body through-hole with the fourth valve barrel through-hole usually with the sixth valve body through-hole intercommunication, the fifth valve barrel through-hole and the sixth valve barrel through-hole of interval arrangement about having on the valve barrel through-hole, the left end of valve barrel through-hole has left hole enlargement hole section and the right-end of valve barrel, the left hole expanding section is located on the left surface of the through hole of the first valve sleeve, the right hole expanding section is located on the right surface of the through hole of the fourth valve sleeve, a left feedback cavity is defined between the left end surface of the valve sleeve and the left end cover in the through hole of the second valve body, and a right feedback cavity is defined between the right end surface of the valve sleeve and the right end cover;
the left flow valve core is arranged in the valve sleeve through hole in a left-right moving mode, the left flow valve core is provided with a first blind hole with a left opening, a left flow valve core through groove is formed in the side wall of the left flow valve core, a first through hole for communicating the left flow valve core through groove with the first blind hole is formed in the left flow valve core through groove, the left end of the left flow valve core is provided with a left reducing section matched with the left expanding hole section, and a first throttling hole for communicating the valve sleeve through groove with the first blind hole is formed in the side wall of the right end of the left flow valve core;
the first left spring seat is sleeved on the left reducing section;
the second left spring seat is sleeved on the left reducing section and is positioned on the left surface of the first left spring seat;
the first left retainer ring is fixedly arranged on the left expanding hole section and is positioned on the left surface of the second left spring seat;
the second left retainer ring is fixedly arranged on the left reducing section and is positioned on the left surface of the second left spring seat;
the left spring is sleeved on the left reducing section, the right end of the left spring abuts against the first left spring seat so that the right end face of the first left spring seat always abuts against the step face of the left reducing section and the step face of the left expanding hole section, the left end of the left spring abuts against the second left spring seat so that the left end face of the second left spring seat always abuts against the first left retainer ring and the second left retainer ring, and at the moment, the left flow valve core through-flow groove is located between the first valve sleeve through-flow hole and the second valve sleeve through-flow hole and is closed by the valve sleeve;
the right flow valve core is arranged in the valve sleeve through hole in a left-right moving mode and is positioned on the right side of the left flow valve core, the right flow valve core is provided with a second blind hole with a right opening, a right flow valve core through groove is formed in the side wall of the right flow valve core, a second through hole for communicating the right flow valve core through groove with the second blind hole is formed in the right flow valve core through groove, the right end of the right flow valve core is provided with a right reducing section matched with the right expanding hole section, and a second throttling hole for communicating the valve sleeve through groove with the second blind hole is formed in the side wall of the left end of the right flow valve core;
the first right spring seat is sleeved on the right reducing section;
the second right spring seat is sleeved on the right reducing section and is positioned on the right surface of the first right spring seat;
the first right retainer ring is fixedly arranged on the right expanding hole section and is positioned on the right surface of the second right spring seat;
the second right retainer ring is fixedly arranged on the right reducing section and is positioned on the left surface of the second right spring seat;
the right spring is sleeved on the right reducing section, the left end of the right spring abuts against the first right spring seat so that the left end face of the first right spring seat always abuts against the step face of the right reducing section and the step face of the right expanding hole section, the right end of the right spring abuts against the second right spring seat so that the right end face of the second right spring seat always abuts against the first right retainer ring and the second right retainer ring, and at the moment, the right flow valve core through-flow groove is positioned between the third valve sleeve through-flow hole and the fourth valve sleeve through-flow hole and is closed by the valve sleeve;
the diverter spool is switchable between a first position and a second position.
2. The anti-skid control valve for an off-road vehicle of claim 1, wherein when the diverter spool is in the first position, the spring force of the spring is greater than the pressure from the fifth port, the spring urges the diverter spool to the right to place the right end of the diverter spool against the right end cap, at which time the diverter spool places the first, second and third valve body vent slots in communication.
3. The anti-skid control valve for an off-road vehicle of claim 1, wherein when the diverter spool is in the second position, the spring force of the spring is less than the pressure from the fifth port, the diverter spool moves to the left to compress the spring, at which time the diverter spool disconnects the first valve body vent slot from the second valve body vent slot and disconnects the second valve body vent slot from the third valve body vent slot.
4. The anti-skid control valve for an off-road vehicle of claim 3, wherein the left flow valve spool moves to the left with respect to the valve housing and the right flow valve spool moves to the right with respect to the valve housing if oil flows from the first port to the second port and from the first port to the third port.
5. The anti-skid control valve for an off-road vehicle of claim 4, wherein if the pressure of the second port is greater than the pressure of the third port, the valve sleeve moves rightward relative to the valve body until the flow from the first port to the second port is equal to the flow from the first port to the third port.
6. The anti-skid control valve for an off-road vehicle of claim 4, wherein if the pressure of the second port is less than the pressure of the third port, the valve sleeve moves leftward relative to the valve body until the flow from the first port to the second port is equal to the flow from the first port to the third port.
7. The anti-skid control valve for an off-road vehicle of claim 3, wherein if oil flows from the second port to the first port and from the third port to the first port, the left flow spool moves to the right with respect to the valve housing and the right flow spool moves to the left with respect to the valve body.
8. The anti-skid control valve for an off-road vehicle of claim 7, wherein if the pressure of the second port is greater than the pressure of the third port, the valve sleeve moves rightward relative to the valve body until the flow from the second port to the first port is equal to the flow from the third port to the first port.
9. The anti-skid control valve for an off-road vehicle of claim 7, wherein if the pressure of the second port is less than the pressure of the third port, the valve sleeve moves leftward relative to the valve body until the flow from the second port to the first port is equal to the flow from the third port to the first port.
CN201810983595.5A 2018-08-27 2018-08-27 Anti-slip control valve for non-road vehicle Active CN108825818B (en)

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US3414017A (en) * 1966-09-06 1968-12-03 Commercial Shearing Fluid control valves
US4276896A (en) * 1979-11-05 1981-07-07 Deere & Company Flow control valve assembly with integrated torque and flow divider control
DE19536553A1 (en) * 1995-09-30 1997-04-03 Eckehart Schulze Electro-hydraulic control valve arrangement
CN103062147B (en) * 2013-01-24 2015-06-03 中联重科股份有限公司 Hydraulic-control throttling valve, balance valve, engineering machine and hydraulic system for controlling winch
CN205331509U (en) * 2015-12-31 2016-06-22 比亚迪股份有限公司 A vehicle that is used for control valve of vehicle and has it

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Effective date of registration: 20200316

Address after: 325102 Zhoushan Road, Dong'ou Industrial Zone, Oubei City New District, Yongjia County, Wenzhou City, Zhejiang Province

Applicant after: LIXIN VALVE GROUP Co.,Ltd.

Address before: 523000 Dongguan City, Guangdong Province, Songshan Lake High-tech Industrial Development Zone Headquarters, No. 2, No. 1 District, No. 2, No. 201

Applicant before: DONGGUAN HAITE PAWO HYDRAULIC TECHNOLOGY Co.,Ltd.

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Denomination of invention: An anti slip control valve for non road vehicles

Effective date of registration: 20230620

Granted publication date: 20200424

Pledgee: Agricultural Bank of China Limited Yongjia County sub branch

Pledgor: LIXIN VALVE GROUP CO.,LTD.

Registration number: Y2023330001238