CN221896889U - Throttle and static pressure guide - Google Patents

Abstract

The present application discloses a throttle and a static pressure guide rail. The throttle includes a main body component and a film component. The main body component includes a first main body, a second main body, a third main body and a fourth main body, the second main body and the fourth main body are respectively arranged on two opposite sides of the third main body, and the first main body is covered on the side of the second main body away from the third main body; the film component includes a first film sheet and a second film sheet, the first film sheet is arranged between the second main body and the third main body and is surrounded by the third main body to form a first regulating chamber, the first film sheet and the second main body are surrounded by a first pressure-stabilizing chamber, the second film sheet is arranged between the third main body and the fourth main body and is surrounded by the third main body to form a second regulating chamber, and the second film sheet and the fourth main body are surrounded by a second pressure-stabilizing chamber. The present application can solve the problem that the side-mounted throttle in the prior art can only control a single oil chamber.

Description

Throttle and static pressure guide

Technical Field

The present application relates to the field of liquid hydrostatic technology, and in particular to a throttle and a hydrostatic guide rail.

Background Art

The diaphragm feedback throttle is equivalent to the control part in the liquid static pressure system. Its main function is to control the thickness of the oil film so that the oil film has adaptive compensation characteristics to adapt to changes in load. It is the most core component in the static pressure system.

At present, the common diaphragm feedback throttles are mainly side-mounted and series-mounted. Among them, the advantage of the side-mounted diaphragm feedback throttle is that the throttle is close to the oil chamber, is less affected by the compressibility of the lubricating oil, and has a fast response speed, while the disadvantage is that a single throttle can only control a single oil chamber. When the number of oil chambers is large, the number of throttles required is also large, which leads to a complex internal oil circuit of the hydrostatic guide slider and insufficient space on the surface of the hydrostatic guide slider to arrange the throttle; the advantage of the series-mounted diaphragm feedback throttle is that multiple throttles are used in series to control multiple oil chambers at the same time, while the disadvantage is that the throttle is far away from the oil chamber, is greatly affected by the compressibility of the lubricating oil, and has a slow response speed.

Utility Model Content

The main purpose of the present application is to provide a throttle and a static pressure guide rail to solve the problem that the side-mounted throttle in the prior art can only control a single oil chamber.

According to one aspect of the present application, a throttle is provided, comprising:

A main body component, the main body component includes a first main body portion, a second main body portion, a third main body portion and a fourth main body portion, the second main body portion and the fourth main body portion are respectively arranged on two opposite sides of the third main body portion, a first cavity is arranged on a side of the second main body portion close to the third main body portion, a first throttling boss is arranged at the center of the first cavity, a first oil outlet channel is arranged on the first throttling boss, the first oil outlet channel extends from the surface of the first throttling boss to a side of the second main body portion away from the third main body portion, a first oil channel is arranged on a side of the second main body portion away from the third main body portion, and a first throttling hole, a second throttling hole and a first oil channel are also arranged on the second main body portion an oil inlet hole, the first main body is covered on a side of the second main body away from the third main body, and the first main body is provided with a second oil outlet channel connected with the first oil outlet channel, the fourth main body is provided with a second cavity on a side close to the third main body, a second throttling boss is provided at the center of the second cavity, a third oil outlet channel is provided on the second throttling boss, the third oil outlet channel extends from the surface of the second throttling boss to a side of the fourth main body away from the third main body, a second oil channel is provided on a side of the fourth main body away from the third main body, and the fourth main body is further provided with a third throttling hole, a fourth throttling hole and a second oil inlet hole;

A film component, the film component comprising a first film sheet and a second film sheet, the first film sheet is arranged between the second main body portion and the third main body portion and is surrounded by the third main body portion to form a first regulating cavity, the first film sheet and the second main body portion are surrounded by a first pressure-stabilizing cavity, the second film sheet is arranged between the third main body portion and the fourth main body portion and is surrounded by the third main body portion to form a second regulating cavity, and the second film sheet and the fourth main body portion are surrounded by a second pressure-stabilizing cavity;

Wherein, two ends of the first throttle hole are respectively connected to the first oil inlet hole and the first regulating chamber, and two ends of the second throttle hole are respectively connected to the first oil channel and the first pressure stabilizing chamber;

Two ends of the third throttle hole are respectively communicated with the second oil inlet hole and the second regulating chamber, and two ends of the fourth throttle hole are respectively communicated with the second oil channel and the second pressure stabilizing chamber.

Furthermore, a fourth oil outlet channel is provided on the throttle, and the fourth oil outlet channel is provided through the second main body, the third main body and the fourth main body, and is connected with the second oil outlet channel, and a port of the fourth oil outlet channel at one end away from the second oil outlet channel is located on the end face of the fourth main body away from the third main body.

Furthermore, the second oil outlet channel includes a first connecting section, a second connecting section and a flow section, the first connecting section and the second connecting section both extend along the thickness direction of the first main body, the flow section extends from the outer edge of the first main body toward the inner side of the first main body and is connected with the first connecting section and the second connecting section, and a top screw is provided at one end of the flow section close to the outer edge of the first main body.

Further, the first oil channel includes a first annular channel section and a second annular channel section, the first annular channel section and the second annular channel section are coaxially arranged, and the flow area of the first annular channel section is larger than the flow area of the second annular channel section, wherein the first annular channel section is connected with the first oil inlet hole, the first regulating chamber, the first throttle hole, the second throttle hole and the first pressure stabilizing chamber, and the second annular channel is connected with the second throttle hole and the first oil outlet channel;

The second oil channel includes a third annular channel segment and a fourth annular channel segment, the third annular channel segment and the fourth annular channel segment are coaxially arranged, and the flow area of the third annular channel segment is larger than the flow area of the fourth annular channel segment, wherein the third annular channel segment is connected to the second oil inlet hole, the second regulating chamber, the third throttling hole, the fourth throttling hole and the second pressure stabilizing chamber, and the fourth annular channel segment is connected to the fourth throttling hole and the third oil outlet channel.

Furthermore, an oil inlet channel is also provided on the throttle, and the oil inlet channel is provided through the second main body, the third main body and the fourth main body, and the oil inlet channel is connected to the first throttling hole, the first oil inlet hole, the second oil inlet hole and the third throttling hole.

Furthermore, a first pre-stressing boss adapted to the first cavity and a second pre-stressing boss adapted to the second cavity are provided on opposite sides of the third main body portion, the first pre-stressing boss is used to apply pressure to the first film sheet toward the second main body portion, and the second pre-stressing boss is used to apply pressure to the second film sheet toward the fourth main body portion.

Furthermore, the end surface of the first pre-pressure boss is provided with a first annular groove, and the first annular groove is used to supply oil liquid from the first oil inlet hole to the first regulating chamber, and the end surface of the second pre-pressure boss is provided with a second annular groove, and the second annular groove is used to supply oil liquid from the second oil inlet hole to the second regulating chamber.

Furthermore, the throttle also includes a sealing ring, which is arranged between the first main body and the second main body, between the second main body and the third main body, between the third main body and the fourth main body, and on a side of the fourth main body away from the third main body.

Furthermore, the first main body portion, the second main body portion, the third main body portion and the fourth main body portion are all fixedly connected by bolts.

On the other hand, the present application also provides a hydrostatic guide rail, which includes the above-mentioned throttle.

In the present application, when the throttle is actually used, after the hydraulic oil is passed into the throttle, the hydraulic oil enters the throttle from the third throttle hole. After entering the throttle, the hydraulic oil is divided into four streams of oil. The first stream of oil flows from the third throttle hole to the second oil channel, and flows from the second oil channel to the fourth throttle port and then enters the second pressure stabilizing chamber, and flows from the second oil channel to the third oil outlet channel; the second stream of oil flows from the third throttle hole to the second oil inlet hole, and enters the second regulating chamber from the second oil inlet hole; the third stream of oil flows from the third throttle hole to the first oil inlet hole, and enters the first regulating chamber from the first oil inlet hole; the fourth stream of oil flows from the third throttle hole to the first throttle hole, and then flows from the first throttle hole to the first oil channel, and flows from the first oil channel to the second throttle port and then enters the first pressure stabilizing chamber, and flows from the first oil channel to the first oil outlet channel. Since the second oil outlet channel is connected to the first oil outlet channel, the fourth stream of oil will also flow from the first oil outlet channel into the second oil outlet channel.

When the throttle is not connected to a load, its pressure is 0. At this time, the oil pressure in the first pressure-stabilizing chamber is less than the oil pressure in the first regulating chamber, and the oil pressure in the second pressure-stabilizing chamber is less than the oil pressure in the second regulating chamber, so that the first diaphragm is bent and deformed toward the second main body, and the second diaphragm is bent and deformed toward the fourth main body, which results in the gap between the first diaphragm and the second main body, and the gap between the second diaphragm and the fourth main body being 0, so that the throttle has only two hydraulic oils flowing out through the second oil outlet channel and the third oil outlet channel, and the hydraulic oil flow rate is small. When the total pressure of the throttle is 0, the pressure of the throttle is 0 ... When the oil outlet is connected to a load, the oil pressure in the first pressure-stabilizing chamber is greater than the oil pressure in the first regulating chamber, and the oil pressure in the second pressure-stabilizing chamber is greater than the oil pressure in the second regulating chamber, so that the first diaphragm and the second diaphragm are both bent and deformed toward the third main body, thereby increasing the gap between the first diaphragm and the second main body, and between the second diaphragm and the fourth main body. At this time, the hydraulic oil in the first pressure-stabilizing chamber can flow into the second oil outlet channel through the first oil outlet channel, and then flow out from the second oil outlet channel, while the hydraulic oil in the second pressure-stabilizing chamber can flow out through the third oil outlet channel, and the hydraulic oil flow rate is relatively large.

That is to say, compared with the structure of the throttle in the prior art that can only control a single oil chamber, the throttle of the present application arranges the second main body and the fourth main body in a mirrored manner to achieve the synchronous use of the two throttles, with a compact structure and small space occupation, and a second oil outlet channel is added in the throttle, so that the hydraulic oil can flow out from the second oil outlet channel and the third oil outlet channel after flowing in from the third throttle hole, and finally the throttle can control two static pressure oil chambers at the same time. At the same time, by controlling the two pressure stabilizing chambers and two regulating chambers in the throttle, the oil outlet flow of the hydraulic oil can be controlled, thereby controlling the oil film thickness.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 is a cross-sectional view of a throttle disclosed in an embodiment of the present application;

FIG2 is a schematic diagram of the structure of the throttle disclosed in the embodiment of the present application;

FIG3 is a schematic diagram of the structural decomposition of the throttle disclosed in the embodiment of the present application;

FIG4 is a schematic structural diagram of the second main body portion disclosed in an embodiment of the present application at a first viewing angle;

FIG5 is a schematic structural diagram of the second main body portion disclosed in the embodiment of the present application at a second viewing angle;

FIG6 is a front view of the third main body portion disclosed in the embodiment of the present application;

FIG7 is a schematic structural diagram of the third main body portion disclosed in the embodiment of the present application at a first viewing angle;

FIG8 is a schematic structural diagram of the third main body portion disclosed in the embodiment of the present application at a second viewing angle;

FIG9 is a schematic structural diagram of a fourth main body portion disclosed in an embodiment of the present application at a first viewing angle;

FIG10 is a schematic structural diagram of the fourth main body portion disclosed in the embodiment of the present application at a second viewing angle;

FIG. 11 is a schematic diagram of the assembly of the throttle and the static pressure guide rail disclosed in the embodiment of the present application.

The above drawings include the following reference numerals:

10. Main body; 11. First main body; 111. Second oil outlet channel; 1111. First connecting section; 1112. Second connecting section; 1113. Circulation section; 12. Second main body; 121. First cavity; 122. First throttling boss; 123. First oil outlet channel; 124. First oil channel; 1241. First annular channel section; 1242. Second annular channel section; 125. First throttling hole; 126. Second throttling hole; 127. First oil inlet hole; 13, third main body; 131, first pre-compression boss; 1311, first annular groove; 132, second pre-compression boss; 1321, second annular groove; 14, fourth main body; 141, second cavity; 142, second throttling boss; 143, third oil outlet channel; 144, second oil channel; 1441, third annular channel section; 1442, fourth annular channel section; 145, third throttling hole; 146, fourth throttling hole; 147, second oil inlet hole;

20. Film component; 21. First film sheet; 211. First regulating chamber; 212. First pressure stabilizing chamber; 22. Second film sheet; 221. Second regulating chamber; 222. Second pressure stabilizing chamber;

30. Fourth oil outlet channel; 40. Top screw; 50. Oil inlet channel; 60. Sealing ring; 70. Bolt; 80. Hydrostatic guide rail.

DETAILED DESCRIPTION

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and/or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and/or combinations thereof.

Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

As mentioned in the background technology, the existing side-mounted diaphragm feedback throttle is a single-piece throttle, which can only control a single oil chamber. When the number of oil chambers is large, the number of throttles required is also large, which easily leads to a complex internal oil circuit of the hydrostatic guide slider, and there is not enough space on the surface of the hydrostatic guide slider to arrange the throttle. Therefore, in order to solve the problem that the side-mounted diaphragm feedback throttle can only control a single oil chamber, the inventor of the present application has designed a new type of throttle, which will be introduced in detail below.

It should be noted that, in the present application, the thickness direction of the first main body portion 11 is the direction indicated by the letter A in FIG. 1 .

1 to 11 , the present application provides a throttle, which includes a main body component 10 and a film component 20 .

The main body part 10 includes a first main body part 11, a second main body part 12, a third main body part 13 and a fourth main body part 14, the second main body part 12 and the fourth main body part 14 are respectively arranged on two opposite sides of the third main body part 13, a first cavity 121 is arranged on one side of the second main body part 12 close to the third main body part 13, a first throttling boss 122 is arranged in the center of the first cavity 121, a first oil outlet channel 123 is arranged on the first throttling boss 122, the first oil outlet channel 123 extends from the surface of the first throttling boss 122 to the side of the second main body part 12 away from the third main body part 13, a first oil channel 124 is arranged on the side of the second main body part 12 away from the third main body part 13, and a first throttling hole 125, a second throttling hole 126 and a first inlet The oil hole 127, the first main body 11 is covered on the side of the second main body 12 away from the third main body 13, and the first main body 11 is provided with a second oil outlet channel 111 connected with the first oil outlet channel 123, and the fourth main body 14 is provided with a second cavity 141 on the side close to the third main body 13, and a second throttling boss 142 is provided in the center of the second cavity 141, and a third oil outlet channel 143 is provided on the second throttling boss 142. The third oil outlet channel 143 extends from the surface of the second throttling boss 142 to the side of the fourth main body 14 away from the third main body 13, and a second oil channel 144 is provided on the side of the fourth main body 14 away from the third main body 13. The fourth main body 14 is also provided with a third throttling hole 145, a fourth throttling hole 146 and a second oil inlet hole 147.

Among them, the film component 20 includes a first film sheet 21 and a second film sheet 22. The first film sheet 21 is arranged between the second main body 12 and the third main body 13 and is surrounded by the third main body 13 to form a first regulating cavity 211. The first film sheet 21 and the second main body 12 are surrounded by a first pressure-stabilizing cavity 212. The second film sheet 22 is arranged between the third main body 13 and the fourth main body 14 and is surrounded by the third main body 13 to form a second regulating cavity 221. The second film sheet 22 and the fourth main body 14 are surrounded by a second pressure-stabilizing cavity 222.

Among them, the two ends of the first throttle hole 125 are respectively connected to the first oil inlet hole 127 and the first regulating chamber 211, and the two ends of the second throttle hole 126 are respectively connected to the first oil channel 124 and the first pressure stabilizing chamber 212; the two ends of the third throttle hole 145 are respectively connected to the second oil inlet hole 147 and the second regulating chamber 221, and the two ends of the fourth throttle hole 146 are respectively connected to the second oil channel 144 and the second pressure stabilizing chamber 222.

As shown in FIGS. 1 to 3 , in this embodiment, the main body component 10 includes a first main body portion 11 , a second main body portion 12 , a third main body portion 13 and a fourth main body portion 14 , and the film component 20 includes a first film sheet 21 and a second film sheet 22 . When the throttle is actually processed, the second main body 12 and the fourth main body 14 can be arranged on the opposite sides of the third main body 13, and the first main body 11 can be covered on the side of the second main body 12 away from the third main body 13, and then the first film 21 is arranged between the second main body 12 and the third main body 13, and the second film 22 is arranged between the third main body 13 and the fourth main body 14. At this time, when the throttle is connected to the static pressure guide rail 80, a closed first oil channel 124 and a second oil channel 144 can be formed on the joint end surface. At the same time, the first film 21 and the third main body 13 are surrounded by a first regulating chamber 211, and are surrounded by a first pressure-stabilizing chamber 212 with the second main body 12, and the second film 22 and the third main body 13 are surrounded by a second regulating chamber 221, and are surrounded by a second pressure-stabilizing chamber 222 with the fourth main body 14. It can be understood that the second main body 12 and the fourth main body 14 in this embodiment have the same structure, and during actual assembly, the two are symmetrically arranged at two ends of the third main body 13 .

When the throttle is actually used, after the hydraulic oil is passed into the throttle, the hydraulic oil enters the throttle from the third throttle hole 145. After entering the throttle, the hydraulic oil is divided into four streams of oil. The first stream of oil flows from the third throttle hole 145 to the second oil channel 144, and flows from the second oil channel 144 to the fourth throttle port and then enters the second pressure stabilizing chamber 222, and flows from the second oil channel 144 to the third oil outlet channel 143; the second stream of oil flows from the third throttle hole 145 to the second oil inlet hole 147, and enters the second regulating chamber 221 from the second oil inlet hole 147; the third ...; the third stream of oil flows from the third throttle hole 145 to the second oil channel 144, and flows from the second oil channel 144 to the third oil outlet channel 143; the third stream of oil flows from the third throttle hole 145 to the second oil channel 144, and flows from the second oil channel 144 to the third oil outlet channel 143; the third stream The flow hole 145 flows to the first oil inlet hole 127, and enters the first regulating chamber 211 from the first oil inlet hole 127; the fourth oil flows from the third throttle hole 145 to the first throttle hole 125, and then flows from the first throttle hole 125 to the first oil channel 124, and flows from the first oil channel 124 to the second throttle port and then enters the first pressure stabilizing chamber 212, and flows from the first oil channel 124 to the first oil outlet channel 123. Since the second oil outlet channel 111 is connected to the first oil outlet channel 123, the fourth oil will also flow from the first oil outlet channel 123 into the second oil outlet channel 111.

When the throttle is not connected to a load, its pressure is 0. At this time, the oil pressure of the first pressure-stabilizing chamber 212 is less than the oil pressure of the first regulating chamber 211, and the oil pressure of the second pressure-stabilizing chamber 222 is less than the oil pressure of the second regulating chamber 221, so that the first diaphragm 21 is bent and deformed toward the second main body 12, and the second diaphragm 22 is bent and deformed toward the fourth main body 14, which results in the gap between the first diaphragm 21 and the second main body 12, and the gap between the second diaphragm 22 and the fourth main body 14 being 0, so that the throttle has only two hydraulic oils flowing out through the second oil outlet channel 111 and the third oil outlet channel 143, and the hydraulic oil flow rate is small; when the total oil outlet of the throttle is connected to When loaded, the oil pressure in the first pressure-stabilizing chamber 212 is greater than the oil pressure in the first regulating chamber 211, and the oil pressure in the second pressure-stabilizing chamber 222 is greater than the oil pressure in the second regulating chamber 221, so that the first diaphragm 21 and the second diaphragm 22 are both bent and deformed toward the third main body 13, thereby increasing the gap between the first diaphragm 21 and the second main body 12, and between the second diaphragm 22 and the fourth main body 14. At this time, the hydraulic oil in the first pressure-stabilizing chamber 212 can flow into the second oil outlet channel 111 through the first oil outlet channel 123, and then flow out from the second oil outlet channel 111, while the hydraulic oil in the second pressure-stabilizing chamber 222 can flow out through the third oil outlet channel 143, and the hydraulic oil flow rate is relatively large.

That is to say, compared with the structure of the throttle in the prior art that can only control a single oil chamber, the throttle of this embodiment arranges the second main body 12 and the fourth main body 14 in a mirror image manner to achieve the synchronous use of the two throttles, with a compact structure and small space occupation, and a second oil outlet channel 111 is added in the throttle, so that the hydraulic oil can flow out from the second oil outlet channel 111 and the third oil outlet channel 143 after flowing in from the third throttle hole 145, and finally the throttle can control two static pressure oil chambers at the same time. At the same time, by controlling the two pressure stabilizing chambers and two regulating chambers in the throttle, the oil outlet flow of the hydraulic oil can be controlled, thereby controlling the oil film thickness.

Further, as shown in FIG. 1 , the throttle in this embodiment is also provided with a fourth oil outlet channel 30, which is provided through the second main body 12, the third main body 13 and the fourth main body 14, and is connected with the second oil outlet channel 111, and the port of the fourth oil outlet channel 30 at one end away from the second oil outlet channel 111 is located on the end surface of the fourth main body 14 away from the third main body 13. In this way, when the hydraulic oil flows in from the third throttle hole 145, it can flow from the first throttle hole 125 to the first oil channel 124, and from the first oil channel 124 to the first oil outlet channel 123, and then from the first oil outlet channel 123 to the second oil outlet channel 111, and then flow out from the fourth oil outlet channel 30. It can be seen that this embodiment includes two oil circuits, the third oil outlet channel 143 and the fourth oil outlet channel 30. The existence of the two oil circuits can control two static pressure oil chambers at the same time, making up for the deficiency that the existing throttle can only control a single oil chamber, and the structure is simple, which is convenient for assembly and processing.

Further, the second oil outlet channel 111 in the present embodiment comprises a first connecting section 1111, a second connecting section 1112 and a circulation section 1113, the first connecting section 1111 and the second connecting section 1112 both extend along the thickness direction of the first main body 11, the circulation section 1113 extends from the outer edge of the first main body 11 toward the inner side of the first main body 11 and communicates with the first connecting section 1111 and the second connecting section 1112, and a top screw 40 is provided at one end of the circulation section 1113 close to the outer edge of the first main body 11. In combination with FIG. 1 , it can be seen that the first connecting section 1111 in the present embodiment is communicated with the first oil outlet channel 123, and the second connecting section 1112 is communicated with the fourth oil outlet channel 30, so that when the hydraulic oil flows out from the first oil outlet channel 123, it can flow to the circulation section 1113 via the first connecting section 1111, and then flow out from the second connecting section 1112 and flow into the fourth oil outlet channel 30, so as to realize the flow of the hydraulic oil in the throttle. At the same time, the flow section 1113 in this embodiment extends from the outer edge of the first main body 11 toward the inner side of the first main body 11, which is more convenient for processing and production. After the processing is completed, the port of the flow section 1113 located at the outer edge of the first main body 11 is sealed by the action of the top screw 40, so that the oil can flow from the flow section 1113 into the second connecting section 1112 and then into the fourth oil outlet channel 30. Of course, in other embodiments of the present application, other sealing plugs can also be used to seal the port of the flow section 1113 located at the outer edge of the first main body 11. As long as it is other deformation methods under the conception of the present application, they are all within the protection scope of the present application.

Further, referring to FIG5 , the first oil channel 124 in this embodiment includes a first annular channel section 1241 and a second annular channel section 1242, which are coaxially arranged, and the flow area of the first annular channel section 1241 is larger than the flow area of the second annular channel section 1242, where the flow area is the cross section of the first annular channel section 1241 and the second annular channel section 1242. Such arrangement is because the fluid resistance of the oil in the first annular channel section 1241 is relatively low, while the fluid resistance in the second annular channel is relatively high, and the oil flow rate out of the fourth oil outlet channel 30 is adjusted by the height of the fluid resistance, thereby controlling the thickness of the oil film on the static pressure guide rail 80.

Specifically, as shown in Figure 1, the first annular channel section 1241 is connected to the first oil inlet hole 127, the first regulating chamber 211, the first throttle hole 125, the second throttle hole 126 and the first pressure stabilizing chamber 212, and the second annular channel is connected to the second throttle hole 126 and the first oil outlet channel 123.

Further, as shown in FIG10 , the second oil channel 144 includes a third annular channel section 1441 and a fourth annular channel section 1442, which are coaxially arranged, and the flow area of the third annular channel section 1441 is larger than the flow area of the fourth annular channel section 1442, where the flow area is the cross section of the third annular channel section 1441 and the fourth annular channel section 1442. Such arrangement is because the fluid resistance of the oil in the third annular channel section 1441 is relatively low, while the fluid resistance in the fourth annular channel is relatively high, and the oil flow rate out of the third oil outlet channel 143 is adjusted by the height of the fluid resistance, thereby controlling the thickness of the oil film on the static pressure guide rail 80.

Specifically, as shown in Figure 1, the third annular channel section 1441 is connected to the second oil inlet hole 147, the second regulating chamber 221, the third throttling hole 145, the fourth throttling hole 146 and the second pressure stabilizing chamber 222, and the fourth annular channel section 1442 is connected to the fourth throttling hole 146 and the third oil outlet channel 143.

Optionally, the first annular channel segment 1241, the second annular channel segment 1242, the third annular channel segment 1441 and the fourth annular channel segment 1442 in the present application can be circular annular channel segments, or square annular channel segments, elliptical annular channel segments, etc. Figures 5 and 10 of this embodiment show the situation when the first annular channel segment 1241, the second annular channel segment 1242, the third annular channel segment 1441 and the fourth annular channel segment 1442 are circular annular channel segments.

Furthermore, in order to ensure that the hydraulic oil can enter the first regulating chamber 211, the first pressure-stabilizing chamber 212, the second regulating chamber 221 and the second pressure-stabilizing chamber 222, the throttle in this embodiment is also provided with an oil inlet channel 50, and the oil inlet channel 50 is arranged through the second main body 12, the third main body 13 and the fourth main body 14, and the oil inlet channel 50 is connected to the first throttling hole 125, the first oil inlet hole 127, the second oil inlet hole 147 and the third throttling hole 145, as shown in Figure 1. With such arrangement, when the hydraulic oil enters from the third throttle hole 145, it can flow from the third throttle hole 145 through the third annular channel section 1441 and then flow into the fourth throttle hole 146, and enter the second pressure-stabilizing chamber 222 through the fourth throttle hole 146; the hydraulic oil can flow from the oil inlet channel 50 into the second oil inlet hole 147 and then flow into the second regulating chamber 221; the hydraulic oil can flow from the oil inlet channel 50 into the first oil inlet hole 127 and then flow into the first regulating chamber 211; the hydraulic oil can flow from the oil inlet channel 50 to the first throttle hole 125, and then flow through the first annular channel section 1241, and then flow into the second throttle hole 126, and enter the first pressure-stabilizing chamber 212 from the second throttle hole 126.

Further, referring to FIGS. 6 to 8 , the third main body 13 in this embodiment is provided with a first pre-compression boss 131 adapted to the first cavity 121 and a second pre-compression boss 132 adapted to the second cavity 141 on opposite sides thereof. The first pre-compression boss 131 is used to apply pressure to the first film 21 in the direction of the second main body 12, and the second pre-compression boss 132 is used to apply pressure to the second film 22 in the direction of the fourth main body 14. Specifically, the first pre-compression boss 131 applies pressure to the first film 21 in the direction of the second main body 12 so that the gap between the first film 21 and the second main body 12 is 0, and the second pre-compression boss 132 applies pressure to the second film 22 in the direction of the fourth main body 14 so that the gap between the second film 22 and the fourth main body 14 is 0, thereby causing the throttle to have only two paths of hydraulic oil flowing out through the second oil outlet channel 111 and the third oil outlet channel 143, and the flow rate of the hydraulic oil at this time is relatively small.

It can be understood that the first pre-pressing boss 131 and the second pre-pressing boss 132 in this embodiment have the same structure. During actual processing, the two are symmetrically arranged on two opposite sides of the third main body 13 .

Further, referring to FIGS. 7 and 8 , the end surface of the first pre-compression boss 131 in this embodiment is provided with a first annular groove 1311, which is used to supply oil from the first oil inlet hole 127 to flow into the first regulating chamber 211, and the end surface of the second pre-compression boss 132 is provided with a second annular groove 1321, which is used to supply oil from the second oil inlet hole 147 to flow into the second regulating chamber 221. It can be understood that the structures of the first annular groove 1311 and the second annular groove 1321 in this embodiment are the same.

Specifically, the first annular groove 1311 and the second annular groove 1321 in the present application can be circular annular grooves, or square annular grooves, elliptical annular grooves, etc. Figures 7 and 8 of this embodiment show the situation when the first annular groove 1311 and the second annular groove 1321 are circular annular grooves.

During actual operation, the first diaphragm 21 will elastically deform in the first cavity 121 to adjust the oil flow in the first regulating cavity 211 and the first pressure-stabilizing cavity 212, while the second diaphragm 22 will elastically deform in the second cavity 141 to adjust the oil flow in the second regulating cavity 221 and the second pressure-stabilizing cavity 222. Specifically, the first regulating chamber 211 and the first pressure-stabilizing chamber 212 are provided with a first pre-stressing boss 131 and a first annular groove 1311 located on the end face of the first pre-stressing boss 131, while the second regulating chamber 221 and the second pressure-stabilizing chamber 222 are provided with a second pre-stressing boss 132 and a second annular groove 1321 located on the end face of the second pre-stressing boss 132. When the first diaphragm 21 is deformed in the first cavity 121 and the second diaphragm 22 is deformed in the second cavity 141, the gap between the first regulating chamber 211 and the first pressure-stabilizing chamber 212 and the gap in the second regulating chamber 221 and the second pressure-stabilizing chamber 222 can be adjusted respectively, thereby adjusting their oil flow.

Further, as shown in FIG3 , the throttle in the present embodiment further includes a sealing ring 60, and the sealing ring 60 is disposed between the first main body 11 and the second main body 12, between the second main body 12 and the third main body 13, between the third main body 13 and the fourth main body 14, and on the side of the fourth main body 14 away from the third main body 13. The sealing ring 60 between the first main body 11 and the second main body 12 is provided with a structure such as a circumvention hole for circumventing the first oil channel 124; the sealing ring 60 between the second main body 12 and the third main body 13 is provided with a structure such as a circumvention hole for circumventing the first regulating chamber 211 and the first pressure stabilizing chamber 212; the sealing ring 60 between the third main body 13 and the fourth main body 14 is provided with a structure such as a circumvention hole for circumventing the second regulating chamber 221 and the second pressure stabilizing chamber 222; and the sealing ring 60 on the side of the fourth main body 14 away from the third main body 13 is provided with a structure such as a circumvention hole for circumventing the second oil channel 144. After the throttle is assembled to the static pressure guide rail 80, the gaps between the first main body 11 and the second main body 12, between the second main body 12 and the third main body 13, between the third main body 13 and the fourth main body 14, and between the fourth main body 14 and the static pressure guide rail 80 can be sealed through the action of the sealing ring 60.

Further, the first main body 11, the second main body 12, the third main body 13 and the fourth main body 14 in this embodiment are fixedly connected by bolts 70. Specifically, the first main body 11, the second main body 12, the third main body 13 and the fourth main body 14 are directly fixedly connected to the side of the hydrostatic guide rail 80 by bolts 70. FIG. 11 in this embodiment shows the situation when there are four bolts 70, and FIG. 11 shows the installation position of the throttle. In this embodiment, the fourth main body 14 is in contact with the hydrostatic guide rail 80. Such a setting can solve the problem that the series-type diaphragm feedback throttle is far away from the oil cavity, is greatly affected by the compressibility of the lubricating oil, and has a slow response speed. In addition, the throttle is set according to the embodiment of the present application, which can also solve the problem that the side-mounted diaphragm feedback throttle can only control a single oil cavity. When the number of oil cavities is large, the number of throttles required is also large, which leads to the problem that the internal oil circuit of the hydrostatic guide rail 80 is complicated and there is not enough space on the surface of the hydrostatic guide rail 80 to arrange the throttle.

According to the above embodiments, the throttle of the present application symmetrically arranges the second main body and the fourth main body of the same structure at the two ends of the third main body, and adds the second oil outlet channel and the fourth oil outlet channel, which makes up for the shortcomings that the side-mounted film feedback throttle can only control a single oil chamber, and when the number of oil chambers is large, the number of throttles required is also large, which leads to the complexity of the internal oil circuit of the hydrostatic guide rail. At the same time, the present application installs the throttle on the side of the hydrostatic guide rail, which makes up for the shortcomings that the series film feedback throttle is far away from the oil chamber.

On the other hand, the embodiment of the present application further provides a hydrostatic guide rail, which includes the above-mentioned throttle, and thus, the hydrostatic guide rail includes all the technical effects of the above-mentioned throttle. Since the technical effects of the throttle have been described in detail above, they will not be repeated here.

For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A kind of throttle device, which is used for the throttle device, characterized by comprising the following steps:

The main body part (10), main body part (10) includes first main body part (11), second main body part (12), third main body part (13) and fourth main body part (14), second main body part (12) with fourth main body part (14) set up respectively in the both sides that are opposite of third main body part (13), one side that second main body part (12) is close to third main body part (13) is provided with first cavity (121), the center of first cavity (121) is provided with first throttle boss (122), be provided with first oil outlet channel (123) on the first throttle boss (122), first oil outlet channel (123) follow the surface of first throttle boss (122) extends to second main body part (12) face away from one side of third main body part (13), second main body part (12) face away from one side of third main body part (13) is provided with first fluid passageway (124), second main body part (12) are last to be provided with first orifice (125), second main body part (12) face away from first orifice (127) and first main body part (12) face away from first orifice (127), the first main body part (11) is provided with a second oil outlet channel (111) communicated with the first oil outlet channel (123), one side, close to the third main body part (13), of the fourth main body part (14) is provided with a second cavity (141), the center of the second cavity (141) is provided with a second throttling boss (142), the second throttling boss (142) is provided with a third oil outlet channel (143), the third oil outlet channel (143) extends from the surface of the second throttling boss (142) to one side, away from the third main body part (13), of the fourth main body part (14), one side, away from the third main body part (13), of the fourth main body part (14) is provided with a second oil liquid channel (144), and the fourth main body part (14) is also provided with a third throttling hole (145), a fourth throttling hole (146) and a second oil inlet hole (147);

The film component (20), the film component (20) comprises a first film piece (21) and a second film piece (22), the first film piece (21) is arranged between the second main body part (12) and the third main body part (13) and forms a first adjusting cavity (211) with the third main body part (13) in a surrounding mode, the first film piece (21) forms a first voltage stabilizing cavity (212) with the second main body part (12) in a surrounding mode, the second film piece (22) is arranged between the third main body part (13) and the fourth main body part (14) and forms a second adjusting cavity (221) with the third main body part (13) in a surrounding mode, and the second film piece (22) forms a second voltage stabilizing cavity (222) with the fourth main body part (14) in a surrounding mode.

Wherein, two ends of the first throttling hole (125) are respectively communicated with the first oil inlet hole (127) and the first regulating cavity (211), and two ends of the second throttling hole (126) are respectively communicated with the first oil liquid channel (124) and the first pressure stabilizing cavity (212);

Two ends of the third throttling hole (145) are respectively communicated with the second oil inlet hole (147) and the second regulating cavity (221), and two ends of the fourth throttling hole (146) are respectively communicated with the second oil liquid channel (144) and the second pressure stabilizing cavity (222).

2. The throttle according to claim 1, characterized in that a fourth oil outlet channel (30) is further arranged on the throttle, the fourth oil outlet channel (30) is arranged on the second main body part (12), the third main body part (13) and the fourth main body part (14) in a penetrating way and communicated with the second oil outlet channel (111), and a port of one end of the fourth oil outlet channel (30) far away from the second oil outlet channel (111) is positioned on the end face of the fourth main body part (14) far away from the third main body part (13).

3. The restrictor of claim 2, characterized in that the second oil outlet channel (111) comprises a first connection section (1111), a second connection section (1112) and a circulation section (1113), the first connection section (1111) and the second connection section (1112) each extending in the thickness direction of the first body portion (11), the circulation section (1113) extending from the outer edge of the first body portion (11) towards the inner side of the first body portion (11) and communicating with the first connection section (1111) and the second connection section (1112), and the end of the circulation section (1113) near the outer edge of the first body portion (11) being provided with a jackscrew (40).

4. The restrictor of claim 1, characterized in that the first oil passage (124) comprises a first annular passage section (1241) and a second annular passage section (1242), the first annular passage section (1241) and the second annular passage section (1242) being coaxially arranged, and the flow area of the first annular passage section (1241) being larger than the flow area of the second annular passage section (1242), wherein the first annular passage section (1241) communicates with the first oil inlet (127), the first regulating chamber (211), the first orifice (125), the second orifice (126) and the first pressure stabilizing chamber (212), and the second annular passage section (1242) communicates with the second orifice (126) and the first oil outlet passage (123);

The second oil liquid channel (144) comprises a third annular channel section (1441) and a fourth annular channel section (1442), the third annular channel section (1441) and the fourth annular channel section (1442) are coaxially arranged, the flow area of the third annular channel section (1441) is larger than that of the fourth annular channel section (1442), the third annular channel section (1441) is communicated with the second oil inlet hole (147), the second regulating cavity (221), the third orifice (145), the fourth orifice (146) and the second pressure stabilizing cavity (222), and the fourth annular channel section (1442) is communicated with the fourth orifice (146) and the third oil outlet channel (143).

5. The throttle according to claim 1, wherein an oil inlet passage (50) is further provided in the throttle, the oil inlet passage (50) is provided through the second main body portion (12), the third main body portion (13) and the fourth main body portion (14), and the oil inlet passage (50) communicates with the first orifice (125), the first oil inlet hole (127), the second oil inlet hole (147) and the third orifice (145).

6. The restrictor of claim 1 characterized in that the third body portion (13) is provided on opposite sides with a first pre-compression boss (131) adapted to the first cavity (121) and a second pre-compression boss (132) adapted to the second cavity (141), the first pre-compression boss (131) being adapted to apply a pressure to the first film piece (21) in the direction of the second body portion (12), the second pre-compression boss (132) being adapted to apply a pressure to the second film piece (22) in the direction of the fourth body portion (14).

7. The restrictor of claim 6, characterized in that the end face of the first pre-compression boss (131) is provided with a first annular groove (1311), the first annular groove (1311) being for oil feed from the first oil inlet hole (127) into the first adjustment chamber (211), the end face of the second pre-compression boss (132) being provided with a second annular groove (1321), the second annular groove (1321) being for oil feed from the second oil inlet hole (147) into the second adjustment chamber (221).

8. The throttle according to any one of claims 1 to 7, characterized in that the throttle further comprises a sealing ring (60), the sealing ring (60) being provided between the first body part (11) and the second body part (12), between the second body part (12) and the third body part (13), between the third body part (13) and the fourth body part (14), and on a side of the fourth body part (14) facing away from the third body part (13).

9. The throttle according to any one of claims 1 to 7, characterized in that the first body portion (11), the second body portion (12), the third body portion (13) and the fourth body portion (14) are all fixedly connected by means of bolts (70).

10. A hydrostatic rail (80), characterized in that the hydrostatic rail (80) comprises a throttle as claimed in any one of claims 1 to 9.