CN108412830A - A kind of hydraulic motor automatic variable valve - Google Patents
A kind of hydraulic motor automatic variable valve Download PDFInfo
- Publication number
- CN108412830A CN108412830A CN201810420641.0A CN201810420641A CN108412830A CN 108412830 A CN108412830 A CN 108412830A CN 201810420641 A CN201810420641 A CN 201810420641A CN 108412830 A CN108412830 A CN 108412830A
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- CN
- China
- Prior art keywords
- variable
- oil
- cavity
- valve
- control spool
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- Pending
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Classifications
-
- 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
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a kind of hydraulic motor automatic variable valves, wherein, including valve body, the high-voltage oil cavity being connected by through hole and core cavity are set in valve body, variable oil circuit control Variable Control spool moves in core cavity, realize high-voltage oil cavity and variable oil communication, system high pressure oil entering variable oil circuit in high-voltage oil cavity realizes motor Variable Control, when load excessive, under the control spool cooperation that automatically resets, system high pressure oil pushes Variable Control spool to reset, and cutoff high oil pocket is connected to variable oil circuit.The conversion that high low speed is realized in the case of Exceed load realizes that track drive equipment is automatically converted to low-speed big work status, avoids causing the system failure because of Exceed load, lead to system failure to realize the power output of large torque.
Description
Technical field
The present invention relates to hydraulic motor field, and in particular to a kind of automatic variable valve.
Background technology
Currently, traditional hydraulic motor control generally uses throttle valve throttle grverning, a large amount of energy may be both caused in this way
Amount loss, and speed governing cannot adjust immediately, and structural volume is also bigger after assembling, and piping connection is complicated, each connector and
Sealing between pipeline is also more fragile, while also increasing manufacturing cost.
Therefore, the prior art also needs to be further improved and develop.
Invention content
The purpose of the invention is to provide a kind of new-type hydraulic motor Exceed load automatic return valve, it is intended to solve super
The problem of more loading and causing the system failure, lead to system failure.
Used technical solution is：
A kind of hydraulic motor automatic variable valve, wherein including valve body, the height being connected by through hole is set in valve body
Pumping cavity and core cavity, the valve body is interior to be arranged variable oil circuit connection core cavity, is provided in the core cavity for controlling high-voltage oil cavity
With the Variable Control spool of variable oil circuit break-make, the variable control valve in-core is provided with for making Variable Control spool in motor
The control spool that automatically resets to automatically reset when Exceed load, variable oil circuit control Variable Control spool moves in core cavity, real
Showing high-voltage oil cavity and variable oil communication, the system high pressure oil entering variable oil circuit in high-voltage oil cavity realizes motor Variable Control,
When load excessive, under the control spool cooperation that automatically resets, system high pressure oil pushes Variable Control spool to reset, cutoff high oil
Chamber is connected to variable oil circuit.
The hydraulic motor automatic variable valve, wherein be arranged for realizing system height in the high-voltage oil cavity of the valve body
The check valve that pressure oil irreversibly delivers, the check valve are set on valve seat, and told valve seat is fixed on valve body.
The hydraulic motor automatic variable valve, wherein the high-voltage oil cavity and variable oil circuit are located at core cavity both sides,
The Variable Control spool includes stem, is set to the spring base of stem one end and is fixed on spring base for auxiliary variable control
The spring of valve core reset processed, the stem correspond to the load hole being provided on the end face of spring for putting spring, the stem column
It is provided with the radial through-hole for being connected to high-voltage oil cavity and variable oil circuit with it.
The hydraulic motor automatic variable valve, wherein the stem of the Variable Control spool is provided with axially distributed
The core bore for loading the control spool that automatically resets, corresponding automatically reset controls spool and is provided with bunker in the stem, institute
Core bore one end connection bunker is stated, other end connection carries hole, and the radial through-hole passes through bunker to run through stem.
The hydraulic motor automatic variable valve, wherein the variable oil circuit includes that connection core cavity end becomes for pushing
The first branch of control valve core movement, the first grease chamber of corresponding through hole setting, the second grease chamber being connected to the first grease chamber and
The second branch of the second grease chamber and variable piston is connected, hydraulic oil is pushed away by the change gauge hatch entering variable oil circuit of the first branch
Dynamic variable control valve moves in core cavity, and through hole and the first grease chamber are connected to eventually by radial through-hole, make system high pressure oil into
Enter the first grease chamber and the second branch is entered by the second grease chamber and eventually arrive at variable piston, completes Variable Control.
The hydraulic motor automatic variable valve, wherein the core cavity is by the cavity being arranged on valve body and setting logical
The screw plug at chamber both ends is formed, and the spring base corresponds to one end screw plug setting, is provided with for putting spring on the screw plug end face
The shallow slot of seat.
The hydraulic motor automatic variable valve, wherein the control spool one end that automatically resets is held on spring base, another
It holds towards bunker.
The hydraulic motor automatic variable valve, wherein to the end of the Variable Control spool of the dependent variable oil circuit first branch
Annular groove is set in portion, and the annular groove is around Variable Control spool end set.
Advantageous effect：The present invention provides a kind of hydraulic motor automatic variable valve, hydraulic motor in high speed operation state,
Hair is encountered when pressure increases suddenly, and under the action of the pressure of internal load, motor is automatically adjusted to low-speed big work
State completes the automatic high speed of hydraulic motor to the handoff procedure of low speed, preferably protects the Hydraulic Elements in hydraulic system, real
The normal operation of each different operating points of equipment is showed.
Description of the drawings
Fig. 1 is a kind of diagrammatic cross-section of hydraulic motor automatic variable valve of the specific embodiment of the invention.
Fig. 2 is a kind of another diagrammatic cross-section of hydraulic motor automatic variable valve of the specific embodiment of the invention.
Fig. 3 is a kind of DD of hydraulic motor automatic variable valve of the specific embodiment of the invention to diagrammatic cross-section.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.
A kind of hydraulic motor automatic variable valve as shown in Figure 1, wherein including valve body 100, be arranged in valve body by passing through
The high-voltage oil cavity 300 and core cavity 400 that through-hole 200 is connected, the interior 500 connection core cavity 400 of setting variable oil circuit of the valve body are described
The Variable Control spool 410 for controlling high-voltage oil cavity and variable oil circuit break-make is provided in core cavity, in the variable control valve
It is provided with the control spool 420 that automatically resets for making Variable Control spool automatically reset in motor Exceed load, variable oil
Road control Variable Control spool moves in core cavity, realizes high-voltage oil cavity and variable oil communication, and the system in high-voltage oil cavity is high
Pressure oil entering variable oil circuit realizes motor Variable Control, when load excessive, in the case where the control spool 410 that automatically resets coordinates, and system
High pressure oil pushes Variable Control spool to reset, and cutoff high oil pocket is connected to variable oil circuit.
The check valve 310 that setting irreversibly delivers for realizing system high pressure oil in the high-voltage oil cavity of the valve body, the list
It is set on valve seat 320 to valve, told valve seat is fixed on valve body.Check valve, which is fluid, to be flowed along water inlet, water outlet
Medium can not but flow back, and oil stream reverse flow is prevented in hydraulic system.
The high-voltage oil cavity and variable oil circuit are located at core cavity both sides, and the Variable Control spool 410 includes stem
411, it is set to the spring base 412 of stem one end and is fixed on the spring on spring base for auxiliary variable control valve core reset
413, the stem corresponds to the load hole being provided on the end face of spring for putting spring, is provided with and is used on the stem shaft
It is connected to the radial through-hole 414 of high-voltage oil cavity and variable oil circuit.
The stem 411 of the Variable Control spool is provided with axially distributed controls spool for loading to automatically reset
Core bore, the corresponding control spool that automatically resets is provided with bunker in the stem, and the control spool one end that automatically resets is held in spring
On seat, the other end is towards bunker.Described core bore one end is connected to bunker, and other end connection carries hole, and the radial through-hole 414 passes through oil
Stem is run through in storehouse.
Variable oil circuit as shown in Figure 1, Figure 2 and Figure 3 includes 400 end of connection core cavity for pushing Variable Control spool
The first branchs of 410 movements, the first grease chamber 511 of corresponding through hole setting, the second grease chamber 512 being connected to the first grease chamber and
Connect the second branch of the second grease chamber and variable piston 513, the change gauge hatch 514 entering variable oil that hydraulic oil passes through the first branch
Road pushes variable control valve to be moved in core cavity, and through hole 200 and the first grease chamber are connected to eventually by radial through-hole 414, make be
System high pressure oil, which enters the first grease chamber and enters the second branch by the second grease chamber, eventually arrives at variable piston, completes Variable Control, right
Annular groove 430 is set on the end of the Variable Control spool of the dependent variable oil circuit first branch, and the annular groove is around Variable Control spool
End set.
The core cavity is formed by the cavity being arranged on valve body and the screw plug 600 being arranged at cavity both ends with screw plug 700,
The spring base 412 corresponds to one end screw plug 600 and is arranged, and the shallow slot for putting spring seat is provided on the screw plug end face.Screw plug
For blocking the pipeline opening being not frequently used, good airproof performance prevents the oil leakage in motor from causing equipment damage, causes safe thing
Therefore.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (8)
1. a kind of hydraulic motor automatic variable valve, which is characterized in that be connected by through hole in valve body including valve body, setting
High-voltage oil cavity and core cavity, variable oil circuit connection core cavity is set in the valve body, is provided in the core cavity for controlling high pressure
The Variable Control spool of oil pocket and variable oil circuit break-make, the variable control valve in-core are provided with for making Variable Control spool exist
The control spool that automatically resets to automatically reset when motor Exceed load, variable oil circuit control Variable Control spool move in core cavity
It is dynamic, realize high-voltage oil cavity and variable oil communication, the system high pressure oil entering variable oil circuit in high-voltage oil cavity realizes motor variable
Control, when load excessive, under the control spool cooperation that automatically resets, system high pressure oil pushes Variable Control spool to reset, cut-out
High-voltage oil cavity is connected to variable oil circuit.
2. hydraulic motor automatic variable valve according to claim 1, which is characterized in that set in the high-voltage oil cavity of the valve body
The check valve irreversibly delivered for realizing system high pressure oil is set, the check valve is set on valve seat, and told valve seat is fixed on valve
On body.
3. hydraulic motor automatic variable valve according to claim 1, which is characterized in that the high-voltage oil cavity and variable oil circuit
Core cavity both sides are located at, the Variable Control spool includes stem, is set to the spring base of stem one end and is fixed on spring
Spring on seat for auxiliary variable control valve core reset, the stem are corresponded to and are provided with for putting spring on the end face of spring
Load hole, the radial through-hole for being connected to high-voltage oil cavity and variable oil circuit is provided on the stem shaft.
4. hydraulic motor automatic variable valve according to claim 3, which is characterized in that the stem of the Variable Control spool
It is provided with the axially distributed core bore for loading the control spool that automatically resets, the control valve that automatically resets is corresponded in the stem
Core is provided with bunker, and described core bore one end is connected to bunker, and other end connection carries hole, and the radial through-hole passes through bunker to run through core
Column.
5. hydraulic motor automatic variable valve according to claim 1, which is characterized in that the variable oil circuit includes connection core
The first grease chamber and the first grease chamber of the first branch, corresponding through hole setting that chamber end is used to that Variable Control spool to be pushed to move
Second grease chamber of connection and the second branch for connecting the second grease chamber and variable piston, the variable oil that hydraulic oil passes through the first branch
Mouth entering variable oil circuit, pushes variable control valve to be moved in core cavity, and through hole and the first oil are connected to eventually by radial through-hole
Room makes system high pressure oil enter the first grease chamber and enter the second branch by the second grease chamber and eventually arrives at variable piston, completes variable
Control.
6. hydraulic motor automatic variable valve according to claim 3, which is characterized in that the core cavity is by being arranged on valve body
Cavity and the screw plug that is arranged at cavity both ends formed, the spring base corresponds to one end screw plug setting, is set on the screw plug end face
It is equipped with the shallow slot for putting spring seat.
7. hydraulic motor automatic variable valve according to claim 4, which is characterized in that automatically reset control spool one end top
It is held on spring base, the other end is towards bunker.
8. hydraulic motor automatic variable valve according to claim 5, which is characterized in that the dependent variable oil circuit first branch
Annular groove is set on the end of Variable Control spool, and the annular groove is around Variable Control spool end set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420641.0A CN108412830A (en) | 2018-05-04 | 2018-05-04 | A kind of hydraulic motor automatic variable valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420641.0A CN108412830A (en) | 2018-05-04 | 2018-05-04 | A kind of hydraulic motor automatic variable valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108412830A true CN108412830A (en) | 2018-08-17 |
Family
ID=63137776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810420641.0A Pending CN108412830A (en) | 2018-05-04 | 2018-05-04 | A kind of hydraulic motor automatic variable valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108412830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410377A (en) * | 2019-09-03 | 2019-11-05 | 力源液压（苏州）有限公司 | A kind of device realizing outside control and high pressure and automatically controlling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405710A (en) * | 2014-11-14 | 2015-03-11 | 重庆红江机械有限责任公司 | Constant pressure valve for controlling pressure and flow of variable plunger pump |
| CN105650050A (en) * | 2016-04-11 | 2016-06-08 | 青岛力克川液压机械有限公司 | Overload automatic resetting valve of hydraulic motor |
| CN208169229U (en) * | 2018-05-04 | 2018-11-30 | 青岛力克川液压机械有限公司 | A kind of hydraulic motor automatic variable valve |
-
2018
- 2018-05-04 CN CN201810420641.0A patent/CN108412830A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405710A (en) * | 2014-11-14 | 2015-03-11 | 重庆红江机械有限责任公司 | Constant pressure valve for controlling pressure and flow of variable plunger pump |
| CN105650050A (en) * | 2016-04-11 | 2016-06-08 | 青岛力克川液压机械有限公司 | Overload automatic resetting valve of hydraulic motor |
| CN208169229U (en) * | 2018-05-04 | 2018-11-30 | 青岛力克川液压机械有限公司 | A kind of hydraulic motor automatic variable valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410377A (en) * | 2019-09-03 | 2019-11-05 | 力源液压（苏州）有限公司 | A kind of device realizing outside control and high pressure and automatically controlling |
| CN110410377B (en) * | 2019-09-03 | 2024-05-24 | 苏州力源液压有限公司 | Device for realizing external control and high-voltage automatic control |
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