CN210565466U - Hydrostatic support guide sleeve assembly and hydraulic cylinder with same - Google Patents
Hydrostatic support guide sleeve assembly and hydraulic cylinder with same Download PDFInfo
- Publication number
- CN210565466U CN210565466U CN201921026314.3U CN201921026314U CN210565466U CN 210565466 U CN210565466 U CN 210565466U CN 201921026314 U CN201921026314 U CN 201921026314U CN 210565466 U CN210565466 U CN 210565466U
- Authority
- CN
- China
- Prior art keywords
- guide sleeve
- oil
- sleeve body
- static pressure
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model provides a uide bushing subassembly is supported to static pressure and pneumatic cylinder that has it, the uide bushing subassembly is supported to static pressure includes: the guide sleeve comprises a guide sleeve body, wherein the guide sleeve body is formed into a columnar shape, a guide channel which is communicated along the axial direction of the guide sleeve body is limited in the guide sleeve body, at least one groove communicated with the guide channel is formed in the outer wall surface of the guide sleeve body, and the guide sleeve body is provided with an oil inlet communicated with the groove and an oil drainage port communicated with the guide channel; the pressing block is arranged on the outer wall surface of the guide sleeve body and is matched with the corresponding groove to limit a static pressure oil chamber; and the throttle valve is arranged in the static pressure oil chamber to control the flow of the static pressure oil chamber and the guide channel. According to the utility model discloses static pressure supports uide bushing subassembly not only can reduce the friction between uide bushing body and the piston rod, realizes the low friction, improves anti unbalance loading ability, simple structure moreover, and the commonality is strong, the batch production of being convenient for.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field especially relates to a hydrostatic pressure supports uide bushing subassembly and has its pneumatic cylinder.
Background
In the prior art, the common guide sleeve adopts a low-friction sealing ring and a guide structure to meet the requirement of low friction, wherein the sealing material is filled with tetrafluoro, the guide structure adopts welded copper, an embedded copper sleeve or a nylon sleeve and the like, the structure has high friction force and poor unbalance loading resistance, the high-frequency use is easy to generate abrasion due to heating to cause leakage, and the frequency response is low. In addition, according to the hydrostatic bearing principle, the oil with a certain flow passes through the throttle valve (fixed throttle orifice) firstly, and then enters the oil cushion cavity (variable throttle orifice), the throttle valve and the oil cushion cavity are structurally designed in a split mode, the oil cushion cavity is designed in an inner hole of the guide sleeve, 4 or 6 throttle valves corresponding to the external connection of 4 or 6 oil passages are separated (the quantity corresponds to the hydrostatic oil cavity), the overall structure is complex, the pipeline arrangement is complex, the occupied space is large, batch production is not suitable, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a static pressure supports uide bushing subassembly, simple structure not only, the production of being convenient for can realize the low friction moreover, improves anti unbalance loading ability.
The utility model also provides a pneumatic cylinder.
According to the utility model discloses static pressure support uide bushing subassembly of first aspect embodiment, include: the guide sleeve comprises a guide sleeve body, wherein the guide sleeve body is formed into a columnar shape, a guide channel which is communicated along the axial direction of the guide sleeve body is limited in the guide sleeve body, at least one groove communicated with the guide channel is formed in the outer wall surface of the guide sleeve body, and the guide sleeve body is provided with an oil inlet communicated with the groove and an oil drainage port communicated with the guide channel; the pressing block is arranged on the outer wall surface of the guide sleeve body and is matched with the corresponding groove to limit a static pressure oil chamber; at least one throttle valve installed in the static pressure oil chamber to control flow rates of the static pressure oil chamber and the guide passage.
According to the utility model discloses static pressure supports uide bushing subassembly, through with integrated on the uide bushing body of choke valve, static pressure grease chamber etc. this static pressure supports uide bushing subassembly not only can reduce the friction between uide bushing body and the piston rod, realizes the low friction, improves anti unbalance loading ability, simple structure moreover, the manufacturability is good, and the commonality is strong, the batch production of being convenient for.
According to the utility model discloses hydrostatic support uide bushing subassembly can also have following additional technical characteristics.
According to the utility model discloses an embodiment, the outer wall of the relative both sides of uide bushing body is equipped with one respectively the recess, the briquetting is two, two the briquetting is two with two the recess is injectd two respectively the static pressure grease chamber.
According to the utility model discloses an embodiment, this internal being equipped with of uide bushing the oil blanket chamber that link up in the thickness direction of uide bushing body, every the static pressure grease chamber is respectively through two the oil blanket chamber with direction passageway intercommunication, every the outer end in oil blanket chamber is equipped with one respectively the choke valve.
According to the utility model discloses an embodiment, with same two of static pressure grease chamber intercommunication the outer end in oil pad chamber is close to each other and the inner is kept away from each other.
According to the utility model discloses an embodiment, the diapire of recess is equipped with the orientation the axle center of uide bushing body sunken and with the mounting groove of the outer end intercommunication in oil blanket chamber, the choke valve passes through the fix with screw in the mounting groove.
According to the utility model discloses an embodiment, the oil inlet is established the one end of uide bushing body and edge the axial extension of uide bushing body, the uide bushing body is equipped with the oil circuit, the static pressure grease chamber passes through the oil circuit with the oil inlet intercommunication.
According to the utility model discloses an embodiment, the oil circuit forms to the V font, the apex angle department of oil circuit with the oil inlet intercommunication, two free ends of oil circuit respectively with static pressure grease chamber intercommunication.
According to the utility model discloses an embodiment, the oil circuit with the oil blanket chamber is in stagger in the axial of uide bushing body.
According to the utility model discloses an embodiment, the draining mouth is established on the outer wall of uide bushing body, the draining mouth is followed the radial extension of uide bushing body and with the direction passageway intercommunication.
According to the utility model discloses hydraulic cylinder of second aspect embodiment includes the hydrostatic support uide bushing subassembly of above-mentioned embodiment.
Drawings
Fig. 1 is an axial cross-sectional view of a hydrostatic support guide sleeve assembly according to an embodiment of the present invention;
FIG. 2 is a partial axial cross-sectional view of a hydrostatic support guide sleeve assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a hydrostatic support guide sleeve assembly according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line M-M of FIG. 2;
FIG. 5 is a cross-sectional view taken along line N-N of FIG. 2;
fig. 6 is a partially enlarged view of a in fig. 5.
Reference numerals:
a hydrostatic support guide sleeve assembly 100; a guide sleeve body 10; a static pressure oil chamber 11; an oil pad chamber 12; an oil inlet 13; an oil drain port 14; briquetting 20; a throttle valve 30; a throttle static seal 40; a high pressure seal 50; a dust ring 60; a rod seal 70.
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 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 exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, 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 otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The hydrostatic support guide bush assembly 100 according to an embodiment of the present invention will be described first in detail with reference to the drawings.
As shown in fig. 1 to 6, a static pressure support guide sleeve assembly 100 according to an embodiment of the present invention includes a guide sleeve body 10, at least one pressing block 20, and at least one throttle valve 30.
Specifically, the guide sleeve body 10 is formed into a column shape, a guide channel penetrating along the axial direction of the guide sleeve body 10 is defined in the guide sleeve body 10, at least one groove communicated with the guide channel is formed in the outer wall surface of the guide sleeve body 10, the guide sleeve body 10 is provided with an oil inlet 13 communicated with the groove and an oil drainage port 14 communicated with the guide channel, the pressing block 20 is arranged on the outer wall surface of the guide sleeve body 10 and is matched with the corresponding groove to define the static pressure oil chamber 11, and the throttle valve 30 is installed in the static pressure oil chamber 11 to control the flow of the static pressure oil chamber 11 and the guide channel.
In other words, the hydrostatic support pilot sleeve assembly 100 is mainly composed of the pilot sleeve body 10, at least one pressure block 20, and at least one throttle valve 30. The guide sleeve body 10 is formed into a column shape, a guide channel is limited in the guide sleeve body 10, at least one groove is formed in the outer arm surface of the guide sleeve body 10 and communicated with the guide channel, an oil inlet 13(PP port) and an oil drainage port 14(PR port) are further formed in the guide sleeve body 10, the pressing block 20 is matched with the groove to limit the static pressure oil chamber 11, the oil inlet 13 is communicated with the static pressure oil chamber 11, the oil drainage port 14 is communicated with the guide channel, the throttling valve 30 is installed in the static pressure oil chamber 11, no external piping or additional shunt valve is needed, the structure is simple, and the throttling valve is a fixed throttling valve and used for controlling the flow of the static pressure oil.
Furthermore, an oil sealing surface is formed between the guide sleeve body 10 and the piston rod, in the working process, static pressure oil enters the oil inlet 13 and is distributed to the static pressure oil chamber 11, then the oil passes through the oil sealing surface and drains to the oil drainage port 14 through the adjustment and control of the throttle valve 30, the oil drainage port 14 is directly communicated with the oil tank, therefore, the piston rod is suspended in the center of the guide sleeve body 10 through the static pressure oil, a circulating surface oil film is filled between the piston rod and the guide sleeve body 10 to enable the piston rod and the guide sleeve body to be separated from each other and not to be in direct contact, the oil film is used for balancing external loads acting on the piston rod, the piston rod is ensured to be kept in a full-liquid friction state with the guide sleeve body 10 in the working state of linear motion, and the performance that the hydraulic cylinder has low-friction. When the piston rod is subjected to a transverse load, the gap between the guide passage of the guide sleeve body 10 and the piston rod is expanded on the side on which the transverse force acts, so that more bearing lubricating oil flows away, when the oil amount flowing away in unit time is larger than the oil amount led in from the throttle valve 30, the pressure on the side on which the piston rod is stressed is reduced, meanwhile, the pressure on the opposite side is increased due to the fact that the gap is reduced, the piston rod is forced to return to the center of the guide sleeve body 10 again due to the difference of the pressures on the two sides, low friction is achieved, and the anti-unbalance loading capacity is improved.
From this, according to the utility model discloses guide sleeve subassembly 100 is supported to static pressure, through with choke valve 30, static pressure grease chamber 11 etc. integrated on uide bushing body 10, this guide sleeve subassembly 100 is supported to static pressure not only can reduce the friction between uide bushing body 10 and the piston rod, realizes the low friction, improves anti unbalance loading ability, simple structure moreover, and the manufacturability is good, and the commonality is strong, the batch production of being convenient for.
According to some specific embodiments of the utility model, the outer wall of the relative both sides of uide bushing body 10 is equipped with a recess respectively, and briquetting 20 is two, and two static pressure grease chambeies 11 are injectd respectively with two recesses to two briquetting 20.
That is to say, set up two static pressure grease chambeies 11 respectively at the relative both sides outer wall of uide bushing body 10, simple structure, the oil circuit is arranged rationally, is convenient for batch processing and production.
Preferably, an oil pad cavity 12 penetrating in the thickness direction of the guide sleeve body 10 is arranged in the guide sleeve body 10, each static pressure oil chamber 11 is communicated with the guide channel through two oil pad cavities 12, and a throttle valve 30 is arranged at the outer end of each oil pad cavity 12.
Specifically, two throttles 30 may be disposed in each static pressure oil chamber 11, each throttle 30 corresponds to one oil pad chamber 12 to control the flow rate of oil in each oil pad chamber 12, so as to facilitate adjustment, and the number of the oil pad chambers 12 may also be set to six according to specific needs.
In one embodiment of the present invention, the outer ends of the two oil pad chambers 12 communicating with the same hydrostatic oil chamber 11 are close to each other and the inner ends are far away from each other.
Specifically, the oil pad cavities 12 are arranged in the guide sleeve body 10 and form a long-strip-shaped channel, one end of each two oil pad cavities 12 is respectively communicated with two throttle valves 30 in one static pressure oil chamber 11, the other end of each two oil pad cavities 12 is respectively communicated with the guide channel, and the two oil pad cavities 12 corresponding to one static pressure oil chamber 11 are respectively far away from each other from one end to the other end.
According to the utility model discloses an embodiment, the diapire of recess is equipped with towards the axle center of uide bushing body 10 sunken and with the mounting groove of the outer end intercommunication in oil pad chamber 12, and choke valve 30 passes through the fix with screw in the mounting groove.
Particularly, the diapire of every recess is equipped with two mounting grooves respectively, and choke valve 30 installs in the mounting groove, and the one end of bolt links to each other with choke valve 30, and the other end is stopped briquetting 20 and is towards the internal face on one side of the recess, and the structure is firm, avoids choke valve 30 not hard up in the mounting groove.
According to the utility model discloses a still another embodiment, oil inlet 13 is established in the one end of uide bushing body 10 and along the axial extension of uide bushing body 10, is equipped with the oil circuit in the uide bushing body 10, and static pressure grease chamber 11 passes through the oil circuit and communicates with oil inlet 13. Preferably, the oil path is formed in a V shape, the vertex angle of the oil path is communicated with the oil inlet 13, and two free ends of the oil path are respectively communicated with the static pressure oil chamber 11.
In other words, the oil inlet 13 may be disposed at one end of the guide sleeve body 10 and extend along the axial direction of the guide sleeve body 10, oil paths are respectively disposed between the oil inlet 13 and the two static pressure oil chambers 11, one ends of the two oil paths are respectively communicated with the corresponding static pressure oil chambers 11, and the other ends of the two oil paths are respectively communicated with the oil inlet 13, so as to facilitate oil distribution, and the guide sleeve body 10 is simple in structure and convenient to process.
Optionally, the oil path and the oil cushion cavity 12 are staggered in the axial direction of the guide sleeve body 10, that is, the oil path and the oil cushion cavity 12 are not in the same plane, which is convenient for processing.
The utility model discloses an in the embodiment, draining port 14 is established on the outer wall of uide bushing body 10, draining port 14 along the uide bushing body 10 radially extend and with the direction passageway intercommunication, draining port 14 directly communicates the oil tank, the draining of being convenient for.
It should be noted that the hydrostatic support pilot assembly 100 further includes a throttle static seal 40, a high pressure seal 50, a wiper ring 60, and a rod seal 70. Specifically, the throttle static seal 40 is provided in the circumferential direction of the throttle valve 30 to function as a seal. The inner wall surface of the guide sleeve body 10 adjacent to one end is provided with a first mounting groove extending along the circumferential direction, and the high-pressure sealing element 50 is arranged in the first mounting groove to play a sealing role. The inner wall surface of the guide sleeve body 10 adjacent to the other end is provided with a second mounting groove extending along the circumferential direction, the dust ring 60 is arranged in the second mounting groove, and the dust ring 60 can be used for preventing dust and muddy water from entering the oil cylinder. There is the third mounting groove that extends along its circumference on the internal wall face of uide bushing body 10, and the third mounting groove is established between first mounting groove and second mounting groove, and pole seal 70 is established in the second mounting groove, and pole seal 70 can prevent that fluid from leaking outward. The static pressure block 20 is connected with the guide sleeve body 10 through bolts, so that the installation and the disassembly are convenient.
In summary, according to the utility model discloses a static pressure supports uide bushing subassembly 100, through with choke valve 30, static pressure grease chamber 11 etc. integrated on uide bushing body 10, this static pressure supports uide bushing subassembly 100 not only can reduce the friction between uide bushing body 10 and the piston rod, realizes the low friction, improves anti unbalance loading ability, simple structure moreover, the manufacturability is good, and the commonality is strong, the batch production of being convenient for.
According to the utility model discloses the pneumatic cylinder includes the static pressure according to above-mentioned embodiment and supports uide bushing subassembly 100, because according to the utility model discloses the static pressure of above-mentioned embodiment supports uide bushing subassembly 100 and has above-mentioned technological effect, consequently, according to the utility model discloses the pneumatic cylinder also has corresponding technological effect, realizes the low friction, improves anti unbalance loading ability, simple structure moreover, and the manufacturability is good, and the commonality is strong, the batch production of being convenient for.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A hydrostatic support guide sleeve assembly, comprising:
the guide sleeve comprises a guide sleeve body, wherein the guide sleeve body is formed into a columnar shape, a guide channel which is communicated along the axial direction of the guide sleeve body is limited in the guide sleeve body, at least one groove communicated with the guide channel is formed in the outer wall surface of the guide sleeve body, and the guide sleeve body is provided with an oil inlet communicated with the groove and an oil drainage port communicated with the guide channel;
the pressing block is arranged on the outer wall surface of the guide sleeve body and is matched with the corresponding groove to limit a static pressure oil chamber;
at least one throttle valve installed in the static pressure oil chamber to control flow rates of the static pressure oil chamber and the guide passage.
2. The hydrostatic support guide sleeve assembly of claim 1, wherein the guide sleeve body is provided with two grooves on the outer wall surfaces of opposite sides thereof, and the two pressing blocks and the two grooves define two hydrostatic oil chambers respectively.
3. The hydrostatic support guide sleeve assembly according to claim 1 or 2, wherein an oil pad cavity penetrating in a thickness direction of the guide sleeve body is formed in the guide sleeve body, each hydrostatic oil chamber is communicated with the guide passage through two oil pad cavities, and one throttle valve is formed at an outer end of each oil pad cavity.
4. The hydrostatic support guide sleeve assembly of claim 3, wherein the outer ends of two oil pad chambers communicating with the same hydrostatic oil chamber are closer to each other and the inner ends are further from each other.
5. The hydrostatic support guide sleeve assembly of claim 3, wherein the bottom wall of the groove is provided with a mounting groove recessed toward the axial center of the guide sleeve body and communicating with the outer end of the oil pad chamber, and the throttle valve is fixed in the mounting groove by a screw.
6. The hydrostatic support guide sleeve assembly of claim 3, wherein the oil inlet is formed at one end of the guide sleeve body and extends in the axial direction of the guide sleeve body, the guide sleeve body is provided with an oil passage, and the hydrostatic oil chamber is communicated with the oil inlet through the oil passage.
7. The hydrostatic support guide sleeve assembly of claim 6, wherein the oil path is formed in a V shape, the top corner of the oil path is communicated with the oil inlet, and two free ends of the oil path are respectively communicated with the hydrostatic oil chamber.
8. The hydrostatic support pilot sleeve assembly of claim 6, wherein the oil passage is offset from the oil pad cavity in an axial direction of the pilot sleeve body.
9. The hydrostatic support guide sleeve assembly of claim 1, wherein the drain port is provided in an outer wall surface of the guide sleeve body, the drain port extending radially of the guide sleeve body and communicating with the guide passage.
10. A hydraulic cylinder comprising the hydrostatic support pilot assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921026314.3U CN210565466U (en) | 2019-07-03 | 2019-07-03 | Hydrostatic support guide sleeve assembly and hydraulic cylinder with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921026314.3U CN210565466U (en) | 2019-07-03 | 2019-07-03 | Hydrostatic support guide sleeve assembly and hydraulic cylinder with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210565466U true CN210565466U (en) | 2020-05-19 |
Family
ID=70641890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921026314.3U Active CN210565466U (en) | 2019-07-03 | 2019-07-03 | Hydrostatic support guide sleeve assembly and hydraulic cylinder with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210565466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958558A (en) * | 2021-10-19 | 2022-01-21 | 武汉科技大学 | Hydrostatic support hydraulic cylinder guide sleeve |
-
2019
- 2019-07-03 CN CN201921026314.3U patent/CN210565466U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958558A (en) * | 2021-10-19 | 2022-01-21 | 武汉科技大学 | Hydrostatic support hydraulic cylinder guide sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2728301A (en) | Gear pump | |
| US2312941A (en) | Rotary valve | |
| CN110273887B (en) | Servo actuator | |
| CN202432002U (en) | High-pressure difference V-shaped regulating ball valve | |
| CN210565466U (en) | Hydrostatic support guide sleeve assembly and hydraulic cylinder with same | |
| US7261030B2 (en) | Method and system for improving stability of hydraulic systems with load sense | |
| EP3603452B1 (en) | Supporting feet for a household appliance and household appliance including the same | |
| CN103133446B (en) | Valve rod of multi-path valve and multi-path valve with valve rod | |
| US20220161872A1 (en) | Spring-damper system | |
| GB2428276A (en) | Pilot controlled check valve | |
| US20060096816A1 (en) | Fluid flow regulation of a vehicle shock absorber/damper | |
| CN104632755A (en) | Anti-unbalance-loading overloading servo hydraulic cylinder | |
| CN212959640U (en) | Hydro-pneumatic spring | |
| IT8322210A1 (en) | RADIAL PISTON PUMP FOR THE DISPENSING OF SLIDING VEHICLES, IN PARTICULAR HYDRAULIC LIQUIDS | |
| CN101392840B (en) | Valve | |
| US3215160A (en) | Valve | |
| CN111089050A (en) | Bidirectional gear motor pump | |
| CN104776078A (en) | Distributor with automatic restoring function for tractor | |
| CN108708952B (en) | Built-in prepressing adjustable single-side film throttling static pressure screw pair | |
| CN109538563B (en) | Balance valve | |
| CN109185498B (en) | Proportional balance valve | |
| CN111473080A (en) | Hydro-pneumatic spring | |
| CN209875595U (en) | Pilot-operated type static-difference-free pressure reducing valve | |
| CN219622973U (en) | Variable motor pressure control valve | |
| CN101761517B (en) | Electromagnetic priority valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |