CN110594226B - Hydraulic damping control structure - Google Patents
Hydraulic damping control structure Download PDFInfo
- Publication number
- CN110594226B CN110594226B CN201910917365.3A CN201910917365A CN110594226B CN 110594226 B CN110594226 B CN 110594226B CN 201910917365 A CN201910917365 A CN 201910917365A CN 110594226 B CN110594226 B CN 110594226B
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- valve core
- section
- cone
- cone valve
- valve
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- 238000013016 damping Methods 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a hydraulic damping control structure, relate to hydraulic component technical field, which comprises a valve body, the connector, the end cover, the valve barrel, the spool, the cone disk seat, cone valve core and spring, be provided with the centre bore in the valve body, the one end of spool is opened there is cone valve core mounting hole, the cone valve seat is provided with the uide bushing, cone valve core one end is provided with guide bar and sealed terminal surface, cone valve core guide bar slidable stretches into cone valve seat uide bushing, it has the oil circuit hole with cone valve core mounting hole intercommunication of predetermineeing quantity to open on the cone disk seat, form the switch valve port between cone valve core's the sealed terminal surface and the cone valve seat, be provided with the spring between cone valve core and the cone valve core mounting hole, end cover fixed connection is in the one end of valve body, it has the control oil inlet of spool control chamber and the control chamber intercommunication with the spool, be provided with the hydraulic fluid outlet with the connector internal cavity intercommunication, the cavity in the connector communicates with the throttle through-hole, this kind of hydraulic damping control structure has quick response and quick stable performance simultaneously.
Description
Technical field:
the invention relates to the technical field of hydraulic elements, in particular to a hydraulic damping control structure.
The background technology is as follows:
The hydraulic transmission control system is widely applied to various fields of industrial production as a key link, determines the working performance of various equipment, and various functional hydraulic valves are core technologies, and various damping networks and damping control technologies are souls of various hydraulic valves, and determine key performance indexes such as responsiveness, stability and the like of the hydraulic valves. The existing hydraulic valve damping control technology which is widely applied is fixed type bidirectional damping, has fixed throttle small holes and a liquid flow bidirectional damping mode, has a simple structure, but cannot enable a hydraulic pressure valve to have quick response and quick stability, and seriously affects the pressure control performance of a hydraulic system.
The invention comprises the following steps:
in order to solve the technical problems, the invention provides a hydraulic damping control structure which can simultaneously have quick response and quick and stable performance.
The invention is realized by the following technical scheme:
The hydraulic damping control structure is characterized by comprising a valve body, a connecting body, an end cover, a slide valve sleeve, a slide valve core, a cone valve seat, a cone valve core and a spring, wherein a central hole is formed in the valve body, the slide valve sleeve comprises an A section and a B section, the inner diameter of the B section is larger than that of the A section, the slide valve core comprises a C section and a D section, the C section is in clearance fit with the A section, the D section is in clearance fit with the B section, a damping control containing cavity is formed between the D section and the A section in the sliding process of the slide valve core, a throttling through hole is formed at one end of the B section close to the A section, a cone valve core mounting hole is formed at one end of the slide valve core, a guide sleeve is arranged at one end of the cone valve core, a guide rod and a sealing end face are arranged at one end of the cone valve core, the guide rod of the cone valve core slidably stretches into the guide sleeve of the cone valve seat, an oil path hole communicated with the cone valve core mounting hole is formed on the cone valve seat, the cone valve seat is fixedly arranged at the tail end of the D section of the slide valve core, a switch valve port is formed between the sealing end face of the cone valve core and the cone valve seat, a damping containing cavity is fixedly connected with the end cover and the valve core, the end cover is fixedly connected with the valve core and the valve core, and the valve core is connected with the inner cavity is fixedly connected with the valve core through the end cover, and the valve body is connected with the control cavity.
In another aspect of the invention, a limiting step is arranged on one side of the central hole, and a positioning shoulder is arranged on the outer wall of the sliding valve sleeve and is clamped at the limiting step.
In another aspect of the invention, both the side and end faces of the slide valve sleeve are provided with seals, forming a sealing band where the slide valve sleeve contacts the central bore.
In another aspect of the invention, a groove is formed at one end of the cone valve seat, which is close to the slide valve core, the groove is communicated with the oil path hole, a chamfer is formed on the cone valve core, and a tip end of the groove formed on the cone valve seat is detachably clamped on the chamfer of the cone valve core.
In another aspect of the present invention, the oil passage hole on the cone valve seat is inclined toward the central axis direction of the cone valve core.
The beneficial effects of the invention are as follows: the hydraulic damping control structure has the advantages of quick response and quick stability.
Description of the drawings:
FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present invention.
Fig. 2 is a cross-sectional view showing the structure of comparative example 1 of the present invention.
Fig. 3 is a cross-sectional view showing the structure of comparative example 2 of the present invention.
In the accompanying drawings: 1. valve body, 2, connector, 3, end cover, 4, slide valve pocket, 401, A section, 402, B section, 5, slide valve core, 501, C section, 502, D section, 6, cone valve seat, 7, cone valve core, 8, spring, 9, slide valve core control cavity, 10, control oil inlet, 11, valve pocket II, 12, cone valve core II, 13, spring II, 14, force adjustment mechanism II, 15, valve pocket III, 16, cone valve core III, 17, spring III, 18, force adjustment mechanism III, 16, throttle through hole.
The specific embodiment is as follows:
Embodiments of the present invention will be further described with reference to the accompanying drawings and examples:
In the description of the present invention, it should be understood that the description of indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
The utility model provides a hydraulic damping control structure, as shown in FIG. 1, including valve body 1, connector 2, end cover 3, slide valve sleeve 4, slide valve core 5, cone valve seat 6, cone valve core 7 and spring 8, be provided with the centre bore in the valve body 1, slide valve sleeve 4 includes A section 401 and B section 402, B section 402 internal diameter is greater than A section 401, slide valve core 5 includes C section 501 and D section 502, C section 501 and A section 401 clearance fit, D section 502 and B section 402 clearance fit, D section 502 detachably card is in A section 401 tip, slide valve core 5 can slide in slide valve sleeve 4, forms damping control appearance chamber in the slip in-process of slide valve core 5 between D section 502 and the A section 401. The one end that section B402 is close to section A401 is opened there is throttle through-hole 16, fluid can flow in and flow out through the throttle through-hole, open the one end of spool 5 has the cone valve core mounting hole, cone valve seat 6 is provided with uide bushing and seal line, cone valve core 7 one end is provided with guide bar and sealed terminal surface, cone valve core 7 uide bar slidably stretches into cone valve seat 6 uide bushing, cone valve core 7 can be through the internal motion of uide bushing at the cone valve core mounting hole of spool 5, open the oil circuit hole that has predetermineeing quantity and cone valve core mounting hole intercommunication on the cone valve seat 6, fluid can get into damping control appearance chamber through the oil circuit hole, cone valve seat 6 is in the same place through D section 502 end-to-end connection of screw and spool 5, simultaneously connect the face and be coated with the sealing gum, form the switch valve port between cone valve core 7 and the cone valve core mounting hole, be provided with spring 8 between cone valve core 7 and the seal end face of cone valve core 7, spring 8 guarantees that cone valve core 7 closes reliably. The end cover 3 is fixedly connected to one end of the valve body 1, and a spool control cavity 9 and a control oil inlet 10 communicated with the spool control cavity are formed in the end cover 3, and the control oil inlet is used for connecting control oil into the spool control cavity. The front end of the C section 501 of the spool 5 is communicated with the spool control cavity, in this embodiment, the C section 501 of the spool 5 extends into the spool control cavity, the other end of the valve body 1 is fixed with the connecting body 2, a cavity is arranged in the connecting body 2, an oil drain port communicated with the inner cavity of the connecting body 2 is arranged on the connecting body 2, and the oil drain port is simultaneously communicated with an oil tank. The cavity in the connecting body 2 is communicated with the damping control cavity through a throttling hole. One side of the central hole is provided with a limiting step, the limiting step and the valve body 1 are of an integrated structure, the outer wall of the sliding valve sleeve 4 is provided with a positioning shoulder, the positioning shoulder and the sliding valve sleeve 4 are of an integrated structure, the positioning shoulder is clamped at the limiting step, and the sliding valve sleeve 4 is installed in the central hole from one end of the valve body 1 until the positioning shoulder of the sliding valve sleeve 4 contacts with the limiting step of the central hole during installation. The side and end surfaces of the slide valve sleeve 4 are provided with sealing elements, and a sealing band is formed at the contact position of the slide valve sleeve 4 and the central hole. The cone valve seat 6 is close to one end of the slide valve core 5 and is provided with a groove, the groove is communicated with the oil way hole, the cone valve core 7 is provided with a chamfer, and the tip end of the groove formed on the cone valve seat 6 is detachably clamped on the chamfer of the cone valve core 7 to form a sealing line. The oil passage hole in the cone valve seat 6 is inclined toward the central axis direction of the cone valve core 7.
The working process of the hydraulic damping control structure is as follows: after the hydraulic damping control structure is assembled, control oil enters a control cavity of the spool through an oil inlet of an end cover 3 to push the spool 5 to move leftwards (taking the azimuth of figure 1 as an example), at the moment, the damping control cavity forms negative pressure, a cone valve core 7 moves rightwards, a switch valve port is opened, oil in an oil tank enters the damping control cavity through an oil path hole of a cone valve seat 6 and the switch valve port to compensate the negative pressure, the movement resistance of the spool 5 is reduced, the spool 5 moves quickly, and the response speed of the spool 5 is improved; when the slide valve core 5 moves rightwards, the cone valve core 7 closes the valve port under the action of the spring 8 and oil, the oil in the damping control cavity is discharged through the throttling through hole on the side surface of the slide valve sleeve 4, and the movement resistance of the slide valve core 5 is generated due to the damping effect of the throttling through hole, so that the movement of the slide valve core 5 is slowed down, the vibration of the slide valve core 5 is restrained, and the movement stability of the slide valve core 5 is improved. Therefore, the hydraulic damping control structure has both rapid response and rapid and stable performance.
Comparative example 1
As shown in fig. 2, the overflow valve is of a direct-acting cone valve structure, the inclined surface of a cone valve core II 12 is directly pressed on a sealing line of an inner hole of a valve sleeve II 11, the other end of the cone valve core II 12 is connected with one end of a spring II 13, the other end of the spring II 13 is connected with a force adjusting mechanism II 14, the valve core of the overflow valve is not damped, opening and closing movements of the overflow valve are fast, vibration is easy to generate, and the pressure of a hydraulic system is unstable.
Comparative example 2
As shown in fig. 3, compared with comparative example 1, the conical valve core iii 16 and the valve sleeve iii 15 in the structure of comparative example 2 are added with a section of cylindrical mating surface, and the mating is a clearance fit, which plays a damping role in the opening and closing movements of the conical valve core iii 16, and the opening and closing movements of the conical valve core iii 16 are slower, so that the pressure of the hydraulic system can generate larger pressure overshoot, and accidents can occur in serious cases.
In summary, the above embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made by the claims of the present invention shall fall within the scope of the present invention.
Claims (5)
1. A hydraulic damping control structure is characterized by comprising a valve body (1), a connecting body (2), an end cover (3), a sliding valve sleeve (4), a sliding valve core (5), a conical valve seat (6), a conical valve core (7) and a spring (8), wherein a central hole is formed in the valve body (1), the sliding valve sleeve (4) comprises an A section (401) and a B section (402), the inner diameter of the B section (402) is larger than that of the A section (401), the sliding valve core (5) comprises a C section (501) and a D section (502), the C section (501) is in clearance fit with the A section (401), the D section (502) is in clearance fit with the B section (402), a damping control cavity is formed between the D section (502) and the A section (401) in the sliding process of the sliding valve core (5), one end of the B section (402) close to the A section (401) is provided with a throttling through hole (16), one end of the sliding valve core (5) is provided with a conical valve core mounting hole, one end of the conical valve seat (6) is provided with a guide sleeve, one end of the sliding valve core (7) is provided with a guide rod and the guide rod (7) is in clearance fit with the guide rod (6) and the guide rod (6) is fixedly connected with the guide valve seat (6), a switch valve port is formed between the sealing end face of the cone valve core (7) and the cone valve seat (6), a spring (8) is arranged between the cone valve core (7) and the cone valve core mounting hole, an end cover (3) is fixedly connected to one end of the valve body (1), a slide valve core control cavity and a control oil inlet communicated with the slide valve core control cavity are formed in the end cover (3), the front end of a C section (501) of the slide valve core (5) is communicated with the slide valve core control cavity, the other end of the valve body (1) is fixed with the connecting body (2), a cavity is formed in the connecting body (2), an oil drain port communicated with the inner cavity of the connecting body (2) is arranged on the connecting body (2), and the cavity in the connecting body (2) is communicated with the damping control cavity through a throttling hole.
2. The hydraulic damping control structure according to claim 1, characterized in that a limiting step is arranged on one side of the central hole, and a positioning shoulder is arranged on the outer wall of the sliding valve sleeve (4), and the positioning shoulder is clamped at the limiting step.
3. A hydraulic damping control structure according to claim 1, characterized in that the side and end surfaces of the slide valve sleeve (4) are provided with sealing elements, and that a sealing band is formed at the contact of the slide valve sleeve (4) with the central bore.
4. A hydraulic damping control structure according to claim 1 or 2, characterized in that the conical valve seat (6) is provided with a groove at one end close to the spool (5), the groove is communicated with the oil passage hole, the conical valve core (7) is provided with a chamfer, and the tip of the groove formed on the conical valve seat (6) is detachably clamped on the chamfer of the conical valve core (7).
5. A hydraulic damping control structure according to claim 1, wherein the oil passage hole in the cone valve seat (6) is inclined toward the central axis of the cone valve core (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917365.3A CN110594226B (en) | 2019-09-26 | 2019-09-26 | Hydraulic damping control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917365.3A CN110594226B (en) | 2019-09-26 | 2019-09-26 | Hydraulic damping control structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594226A CN110594226A (en) | 2019-12-20 |
| CN110594226B true CN110594226B (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910917365.3A Active CN110594226B (en) | 2019-09-26 | 2019-09-26 | Hydraulic damping control structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN110594226B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2268673A1 (en) * | 1974-04-26 | 1975-11-21 | Bosch Gmbh Robert | Stabilised control valve for trailer brakes - with pressure compensating faces and flow restriction valves |
| JPH08135840A (en) * | 1994-11-10 | 1996-05-31 | Kawasaki Heavy Ind Ltd | Hydraulically operated valve |
| CN105805073A (en) * | 2016-05-29 | 2016-07-27 | 浙江大学 | Cartridge overflow valve main valve with directional damper |
| CN107387284A (en) * | 2017-08-23 | 2017-11-24 | 无锡威孚高科技集团股份有限公司 | Negative pressure damping formula flow-limiting valve |
| CN107654695A (en) * | 2017-09-22 | 2018-02-02 | 台州市国人温控卫浴设备有限公司 | A kind of stainless steel sliding sleeve constant temperature valve core |
| CN210623242U (en) * | 2019-09-26 | 2020-05-26 | 山东泰丰智能控制股份有限公司 | Hydraulic damping control structure |
-
2019
- 2019-09-26 CN CN201910917365.3A patent/CN110594226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2268673A1 (en) * | 1974-04-26 | 1975-11-21 | Bosch Gmbh Robert | Stabilised control valve for trailer brakes - with pressure compensating faces and flow restriction valves |
| JPH08135840A (en) * | 1994-11-10 | 1996-05-31 | Kawasaki Heavy Ind Ltd | Hydraulically operated valve |
| CN105805073A (en) * | 2016-05-29 | 2016-07-27 | 浙江大学 | Cartridge overflow valve main valve with directional damper |
| CN107387284A (en) * | 2017-08-23 | 2017-11-24 | 无锡威孚高科技集团股份有限公司 | Negative pressure damping formula flow-limiting valve |
| CN107654695A (en) * | 2017-09-22 | 2018-02-02 | 台州市国人温控卫浴设备有限公司 | A kind of stainless steel sliding sleeve constant temperature valve core |
| CN210623242U (en) * | 2019-09-26 | 2020-05-26 | 山东泰丰智能控制股份有限公司 | Hydraulic damping control structure |
Non-Patent Citations (1)
| Title |
|---|
| 锥阀加载端的阻尼减振技术研究;刘桓龙;季晓伟;柯坚;肖鹏;;液压气动与密封;20160815(第08期);全文 * |
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| Publication number | Publication date |
|---|---|
| CN110594226A (en) | 2019-12-20 |
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