CN221896889U - Restrictor and hydrostatic guideway - Google Patents

Abstract

The application discloses a throttle and a hydrostatic guideway. The restrictor includes a body member and a membrane member. The main body part comprises a first main body part, a second main body part, a third main body part and a fourth main body part, wherein the second main body part and the fourth main body part are respectively arranged at two opposite sides of the third main body part, and the first main body part is covered at one side of the second main body part, which is away from the third main body part; the film component comprises a first film piece and a second film piece, wherein the first film piece is arranged between the second main body part and the third main body part and forms a first adjusting cavity with the third main body part in a surrounding manner, the first film piece forms a first voltage stabilizing cavity with the second main body part in a surrounding manner, the second film piece is arranged between the third main body part and the fourth main body part and forms a second adjusting cavity with the third main body part in a surrounding manner, and the second film piece forms a second voltage stabilizing cavity with the fourth main body part in a surrounding manner. The application can solve the problem that the side-mounted throttle in the prior art can only control a single oil cavity.

Description

Restrictor and hydrostatic guideway

Technical Field

The application relates to the technical field of hydrostatic pressure, in particular to a restrictor and a hydrostatic guideway.

Background

The thin film feedback throttle is equivalent to a control part in a hydrostatic system, and mainly has the function of controlling the thickness of an oil film, so that the oil film has self-adaptive compensation characteristic to adapt to the change of load, and is the most core part in the hydrostatic system.

At present, the common thin film feedback throttler is mainly of a side-mounted type and a series type. The side-mounted thin film feedback throttler has the advantages that the throttler is closer to an oil cavity, is less influenced by the compressibility of lubricating oil and has high response speed, and the single throttler can only control a single oil cavity, and when the number of the oil cavities is large, the number of throttlers is also large, so that the internal oil way of a hydrostatic guideway slider is complex, and the surface of the hydrostatic guideway slider does not have sufficient space for arranging the throttlers; the series thin film feedback throttler has the advantages that a plurality of throttlers are connected in series for use, a plurality of oil cavities can be controlled simultaneously, and the thin film feedback throttler has the disadvantages that the distance between the throttlers and the oil cavities is far, the influence of the compressibility of lubricating oil is large, and the response speed is slow.

Disclosure of utility model

The application mainly aims to provide a throttle and a hydrostatic guideway, which are used for solving the problem that a side-mounted throttle in the prior art can only control a single oil cavity.

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

The main body part comprises a first main body part, a second main body part, a third main body part and a fourth main body part, the second main body part and the fourth main body part are respectively arranged on two opposite sides of the third main body part, a first cavity is formed in one side, close to the third main body part, of the second main body part, a first throttling boss is arranged in the center of the first cavity, a first oil outlet channel is formed in the first throttling boss, the first oil outlet channel extends from the surface of the first throttling boss to one side, far away from the third main body part, of the second main body part, a first oil liquid channel is formed in one side, far away from the third main body part, of the second main body part, a first throttling hole, a second throttling hole and a first oil inlet hole are formed in the second main body part, one side, far away from the third main body part, a second oil outlet channel communicated with the first oil outlet channel is formed in the first main body part, a second throttling hole is formed in the second main body part, a second main body part is formed in the second main body part, far away from the second throttling hole is formed in the second main body part, a third main body part is formed in the side, far away from the second throttling hole is formed in the second main body part, a fourth main body part is formed in the second main body part, one side, far away from the second throttling hole is formed in the second main body part, and one side, far away from the third main body part is far away from the third oil inlet hole is formed in the second main body part;

The film component comprises a first film piece and a second film piece, wherein the first film piece is arranged between the second main body part and the third main body part and surrounds the third main body part to form a first adjusting cavity, the first film piece and the second main body part surround to form a first voltage stabilizing cavity, the second film piece is arranged between the third main body part and the fourth main body part and surrounds the third main body part to form a second adjusting cavity, and the second film piece and the fourth main body part surround to form a second voltage stabilizing cavity;

The two ends of the first throttling hole are respectively communicated with the first oil inlet hole and the first regulating cavity, and the two ends of the second throttling hole are respectively communicated with the first oil liquid channel and the first pressure stabilizing cavity;

And two ends of the third throttling hole are respectively communicated with the second oil inlet hole and the second regulating cavity, and two ends of the fourth throttling hole are respectively communicated with the second oil liquid channel and the second pressure stabilizing cavity.

Further, a fourth oil outlet channel is further arranged on the throttle, the fourth oil outlet channel is communicated with the second main body part, the third main body part and the fourth main body part and is communicated with the second oil outlet channel, and a port of one end, far away from the second oil outlet channel, of the fourth oil outlet channel is located on the end face, deviating from the third main body part, of the fourth main body part.

Further, the second oil outlet channel comprises a first connecting section, a second connecting section and a circulating section, wherein the first connecting section and the second connecting section extend along the thickness direction of the first main body part, the circulating section extends from the outer edge of the first main body part towards the inner side of the first main body part and is communicated with the first connecting section and the second connecting section, and one end, close to the outer edge of the first main body part, of the circulating section is provided with a jackscrew.

Further, the first oil liquid channel comprises 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, the flow area of the first annular channel section is larger than that of the second annular channel section, the first annular channel section is communicated with the first oil inlet hole, the first regulating cavity, the first throttling hole, the second throttling hole and the first pressure stabilizing cavity, and the second annular channel is communicated with the second throttling hole and the first oil outlet channel;

The second oil liquid channel comprises a third annular channel section and a fourth annular channel section, the third annular channel section and the fourth annular channel section are coaxially arranged, the flow area of the third annular channel section is larger than that of the fourth annular channel section, the third annular channel section is communicated with the second oil inlet hole, the second adjusting cavity, the third throttling hole, the fourth throttling hole and the second pressure stabilizing cavity, and the fourth annular channel section is communicated with the fourth throttling hole and the third oil outlet channel.

Further, an oil inlet channel is further arranged on the throttle, the oil inlet channel is communicated with the second main body part, the third main body part and the fourth main body part, and the oil inlet channel is communicated with the first throttle hole, the first oil inlet hole, the second oil inlet hole and the third throttle hole.

Further, the two opposite sides of the third main body part are provided with a first pre-pressing boss matched with the first cavity and a second pre-pressing boss matched with the second cavity, the first pre-pressing boss is used for applying pressure towards the second main body part to the first film piece, and the second pre-pressing boss is used for applying pressure towards the fourth main body part to the second film piece.

Further, the end face of the first pre-pressing boss is provided with a first annular groove, the first annular groove is used for supplying oil to flow into the first adjusting cavity from the first oil inlet, the end face of the second pre-pressing boss is provided with a second annular groove, and the second annular groove is used for supplying oil to flow into the second adjusting cavity from the second oil inlet.

Further, the throttle further comprises a sealing ring, and the sealing ring is arranged between the first main body part and the second main body part, between the second main body part and the third main body part, between the third main body part and the fourth main body part and on one side, deviating from the third main body part, of the fourth main body part.

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

On the other hand, the application also provides a hydrostatic guideway, which comprises the restrictor.

In the application, when the throttle is actually used, after hydraulic oil is introduced into the throttle, the hydraulic oil enters the throttle from a third throttle, the hydraulic oil entering the throttle is divided into four strands of oil, and the first strand of oil flows from the third throttle to a second oil channel, flows from the second oil channel to a fourth throttle, then enters a second pressure stabilizing cavity and flows from the second oil channel to a third oil outlet channel; the second oil flows from the third throttling hole to the second oil inlet hole and enters the second regulating cavity from the second oil inlet hole; the third oil flows from the third throttling hole to the first oil inlet hole and enters the first regulating cavity from the first oil inlet hole; the fourth oil flows from the third throttle hole to the first throttle hole, flows from the first throttle hole to the first oil channel, flows from the first oil channel to the second throttle hole and then enters the first pressure stabilizing cavity, and flows from the first oil channel to the first oil outlet channel, and because the second oil outlet channel is communicated with the first oil outlet channel, the fourth oil also flows from the first oil outlet channel to the second oil outlet channel.

When the restrictor is not connected with a load, the pressure of the restrictor is 0, at the moment, the oil pressure of the first pressure stabilizing cavity is smaller than the oil pressure of the first regulating cavity, and the oil pressure of the second pressure stabilizing cavity is smaller than the oil pressure of the second regulating cavity, so that the first film sheet is bent and deformed towards the second main body part, the second film sheet is bent and deformed towards the fourth main body part, then a gap between the first film sheet and the second main body part and a gap between the second film sheet and the fourth main body part are 0, and the restrictor only has two paths of hydraulic oil flowing out through the second oil outlet channel and the third oil outlet channel, and the flow rate of the hydraulic oil is smaller; when the total oil outlet of the throttle is connected to a load, the oil pressure of the first pressure stabilizing cavity is larger than that of the first regulating cavity, and the oil pressure of the second pressure stabilizing cavity is larger than that of the second regulating cavity, so that the first thin film piece and the second thin film piece are bent and deformed towards the third main body part, gaps between the first thin film piece and the second main body part and between the second thin film piece and the fourth main body part are increased, at the moment, hydraulic oil in the first pressure stabilizing cavity can flow into the second oil outlet channel through the first oil outlet channel and then flows out of the second oil outlet channel, hydraulic oil in the second pressure stabilizing cavity can flow out of the second oil outlet channel through the third oil outlet channel, and the hydraulic oil flow is large.

That is, compared with the structure that the throttler in the prior art can only control a single oil cavity, the throttler provided by the application has the advantages that the second main body part and the fourth main body part are arranged in a mirror image mode, so that synchronous use of the two throttlers is realized, the structure is compact, the occupied space is small, and the second oil outlet channel is additionally arranged in the throttler, so that 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 throttler can control two static pressure oil cavities simultaneously. Meanwhile, the oil outlet flow of the hydraulic oil can be controlled by controlling the two pressure stabilizing cavities and the two regulating cavities in the throttle, so that the thickness of an oil film can be controlled.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a cross-sectional view of a restrictor disclosed in an embodiment of the present application;

FIG. 2 is a schematic diagram of a structure of a throttle according to an embodiment of the present application;

FIG. 3 is an exploded view of a throttle device according to an embodiment of the present application;

Fig. 4 is a schematic structural view of a second body portion according to an embodiment of the present application at a first viewing angle;

fig. 5 is a schematic structural view of a second body portion according to an embodiment of the present application at a second viewing angle;

FIG. 6 is a front view of a third body portion disclosed in an embodiment of the present application;

Fig. 7 is a schematic structural view of a third body portion according to an embodiment of the present application at a first viewing angle;

Fig. 8 is a schematic structural view of a third body portion according to an embodiment of the present application at a second view angle;

fig. 9 is a schematic structural view of a fourth body portion according to an embodiment of the present application at a first viewing angle;

Fig. 10 is a schematic structural view of a fourth body portion according to an embodiment of the present application at a second viewing angle;

FIG. 11 is a schematic illustration of an assembly of a restrictor with a hydrostatic rail in accordance with embodiments of the present application.

Wherein the above figures include the following reference numerals:

10. A body member; 11. a first body portion; 111. a second oil outlet passage; 1111. a first connection section; 1112. a second connection section; 1113. a flow-through section; 12. a second body portion; 121. a first cavity; 122. a first throttle boss; 123. a first oil outlet passage; 124. the first oil liquid channel; 1241. a first annular channel segment; 1242. a second annular channel segment; 125. a first orifice; 126. a second orifice; 127. a first oil inlet hole; 13. a third body portion; 131. a first pre-pressing boss; 1311. a first annular groove; 132. a second pre-pressing boss; 1321. a second annular groove; 14. a fourth body portion; 141. a second cavity; 142. a second throttle boss; 143. a third oil outlet passage; 144. a second oil passage; 1441. a third annular channel segment; 1442. a fourth annular channel segment; 145. a third orifice; 146. a fourth orifice; 147. a second oil inlet hole;

20. A film member; 21. a first sheet of film; 211. a first adjustment chamber; 212. a first voltage stabilizing cavity; 22. a second sheet of film; 221. a second regulation chamber; 222. a second voltage stabilizing cavity;

30. A fourth oil outlet passage; 40. a jackscrew; 50. an oil inlet passage; 60. a seal ring; 70. a bolt; 80. hydrostatic guideway.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As mentioned in the background art, the existing side-mounted thin film feedback throttler belongs to a single throttle, and can only control a single oil cavity, when the number of oil cavities is large, the number of throttlers is also large, the complexity of the oil path inside the hydrostatic guideway slider is easy to cause, and the throttle is not arranged on the surface of the hydrostatic guideway slider in sufficient space. Therefore, in order to solve the problem that the side-mounted thin film feedback restrictor can only control a single oil chamber, the inventor of the present application devised a novel restrictor, and the restrictor of the present application will be described in detail below.

In the present application, the thickness direction of the first body 11 is the direction indicated by the letter a in fig. 1.

Referring to fig. 1 to 11, the present application provides a throttle comprising a body part 10 and a membrane part 20.

The main body component 10 includes a first main body 11, a second main body 12, a third main body 13, and a fourth main body 14, the second main body 12 and the fourth main body 14 are disposed on two opposite sides of the third main body 13, a first cavity 121 is disposed on one side of the second main body 12 close to the third main body 13, a first throttling boss 122 is disposed in the center of the first cavity 121, a first oil outlet channel 123 is disposed on the first throttling boss 122, the first oil outlet channel 123 extends from the surface of the first throttling boss 122 to one side of the second main body 12 away from the third main body 13, a first oil channel 124 is disposed on one side of the second main body 12 away from the third main body 13, a first throttling hole 125, a second throttling hole 126, and a first oil inlet 127 are disposed on one side of the second main body 12 away from the third main body 13, a second oil outlet channel 111 is disposed on the center of the first main body 11, a first throttling boss 14 extends from one side of the second main body 12 away from the third main body 13 to one side of the second main body 12 away from the third throttling hole 142, a second throttling hole 142 is disposed on one side of the second main body 14 away from the third main body 14, a second throttling hole 142 is disposed on one side of the second main body 14 away from the third cavity 142, and a third throttling hole 142 is disposed on one side of the second main body 14, and a first throttling boss 143 is disposed on one side of the first throttling boss 11.

The thin film component 20 includes a first thin film piece 21 and a second thin film piece 22, the first thin film piece 21 is disposed between the second main body portion 12 and the third main body portion 13 and encloses with the third main body portion 13 to form a first adjusting cavity 211, the first thin film piece 21 encloses with the second main body portion 12 to form a first voltage stabilizing cavity 212, the second thin film piece 22 is disposed between the third main body portion 13 and the fourth main body portion 14 and encloses with the third main body portion 13 to form a second adjusting cavity 221, and the second thin film piece 22 encloses with the fourth main body portion 14 to form a second voltage stabilizing cavity 222.

Wherein, two ends of the first throttle hole 125 are respectively communicated with the first oil inlet hole 127 and the first regulating cavity 211, and two ends of the second throttle hole 126 are respectively communicated with the first oil channel 124 and the first pressure stabilizing cavity 212; both ends of the third orifice 145 communicate with the second oil inlet hole 147 and the second regulation chamber 221, respectively, and both ends of the fourth orifice 146 communicate with the second oil passage 144 and the second pressure stabilizing chamber 222, respectively.

As shown in fig. 1 to 3, in the present embodiment, the body member 10 includes a first body portion 11, a second body portion 12, a third body portion 13, and a fourth body portion 14, and the film member 20 includes a first film piece 21 and a second film piece 22. In the actual processing of the restrictor, the second main body 12 and the fourth main body 14 may be disposed on opposite sides of the third main body 13, the first main body 11 may be covered on a side of the second main body 12 facing away from the third main body 13, then the first thin film piece 21 may be disposed between the second main body 12 and the third main body 13, and the second thin film piece 22 may be disposed between the third main body 13 and the fourth main body 14, at this time, after the restrictor is connected to the hydrostatic guideway 80, the first oil channel 124 and the second oil channel 144 may be formed in a sealed state at the joint end surface, and at the same time, the first thin film piece 21 and the third main body 13 may form a first adjusting cavity 211 and form a first pressure stabilizing cavity 212 with the second main body 12, and the second thin film piece 22 forms a second adjusting cavity 221 with the third main body 13 and forms a second pressure stabilizing cavity 222 with the fourth main body 14. It will be appreciated that the second body portion 12 and the fourth body portion 14 in this embodiment are identical in structure and are symmetrically disposed at both ends of the third body portion 13 at the time of actual assembly.

When the restrictor is actually used, after hydraulic oil is introduced into the restrictor, the hydraulic oil enters the restrictor from the third orifice 145, the hydraulic oil entering the restrictor is divided into four strands of oil, and the first strand of oil flows from the third orifice 145 to the second oil channel 144, flows from the second oil channel 144 to the fourth orifice, then enters the second pressure stabilizing cavity 222, and flows from the second oil channel 144 to the third oil outlet channel 143; the second oil flows from the third orifice 145 to the second oil inlet hole 147, and enters the second regulation chamber 221 from the second oil inlet hole 147; the third oil flows from the third orifice 145 to the first oil inlet hole 127, and enters the first regulation chamber 211 from the first oil inlet hole 127; the fourth oil flows from the third orifice 145 to the first orifice 125, flows from the first orifice 125 to the first oil passage 124, flows from the first oil passage 124 to the second orifice, then enters the first surge tank 212, and flows from the first oil passage 124 to the first oil outlet passage 123, and also flows from the first oil outlet passage 123 to the second oil outlet passage 111 because the second oil outlet passage 111 communicates with the first oil outlet passage 123.

When the restrictor is not connected to a load, the pressure of the restrictor is 0, at this time, the oil pressure of the first pressure stabilizing chamber 212 is smaller than the oil pressure of the first regulating chamber 211, and the oil pressure of the second pressure stabilizing chamber 222 is smaller than the oil pressure of the second regulating chamber 221, so that the first thin film piece 21 is bent and deformed toward the second main body portion 12, and the second thin film piece 22 is bent and deformed toward the fourth main body portion 14, which in turn results in a gap between the first thin film piece 21 and the second main body portion 12 and a gap between the second thin film piece 22 and the fourth main body portion 14 being 0, so that the restrictor has only two paths of hydraulic oil flowing out through the second oil outlet passage 111 and the third oil outlet passage 143, and the flow rate of the hydraulic oil is small; when the total oil outlet of the restrictor is connected to a load, the oil pressure of the first pressure stabilizing chamber 212 is greater than the oil pressure of the first regulating chamber 211, and the oil pressure of the second pressure stabilizing chamber 222 is greater than the oil pressure of the second regulating chamber 221, so that the first thin film piece 21 and the second thin film piece 22 are bent and deformed towards the third main body portion 13, and then the gaps between the first thin film piece 21 and the second main body portion 12 and between the second thin film piece 22 and the fourth main body portion 14 are increased, at this time, the hydraulic oil in the first pressure stabilizing chamber 212 can flow into the second oil outlet passage 111 through the first oil outlet passage 123 and then flow out of the second oil outlet passage 111, and the hydraulic oil in the second pressure stabilizing chamber 222 can flow out through the third oil outlet passage 143, so that the hydraulic oil flow is large.

That is, compared with the structure that the restrictor can only control a single oil chamber in the prior art, the restrictor of the present embodiment adopts a mirror image manner to arrange the second main body portion 12 and the fourth main body portion 14, so as to realize synchronous use of two restrictors, has a compact structure and small occupied space, and the second oil outlet channel 111 is newly added in the restrictor, so that 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 orifice 145, and finally the restrictor can control two static pressure oil chambers simultaneously. Meanwhile, the oil outlet flow of the hydraulic oil can be controlled by controlling the two pressure stabilizing cavities and the two regulating cavities in the throttle, so that the thickness of an oil film can be controlled.

Further, referring to fig. 1, a fourth oil outlet channel 30 is further disposed on the restrictor in the present embodiment, the fourth oil outlet channel 30 is disposed through the second main body 12, the third main body 13 and the fourth main body 14 and is in communication with the second oil outlet channel 111, and a port of an end of the fourth oil outlet channel 30 away from the second oil outlet channel 111 is located on an end surface of the fourth main body 14 away from the third main body 13. Thus, when hydraulic oil flows in from the third orifice 145, it may flow from the first orifice 125 to the first oil passage 124, from the first oil passage 124 to the first oil outlet passage 123, from the first oil outlet passage 123 to the second oil outlet passage 111, and then from the fourth oil outlet passage 30. It can be seen that this embodiment includes two oil ways of third oil outlet channel 143 and fourth oil outlet channel 30, and the existence of two oil ways can control two static pressure oil chambers simultaneously, has compensatied the current restrictor and can only control the defect of single oil chamber, and simple structure, be convenient for equipment and processing.

Further, the second oil outlet passage 111 in the present embodiment includes 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 extend in the thickness direction of the first main body portion 11, the circulation section 1113 extends from the outer edge of the first main body portion 11 toward the inner side of the first main body portion 11 and communicates with the first connection section 1111 and the second connection section 1112, and one end of the circulation section 1113 near the outer edge of the first main body portion 11 is provided with a jackscrew 40. As can be seen from the description of fig. 1, the first connection section 1111 of the present embodiment communicates with the first oil outlet passage 123, and the second connection section 1112 communicates with the fourth oil outlet passage 30, so that when hydraulic oil flows out from the first oil outlet passage 123, hydraulic oil can flow to the circulation section 1113 via the first connection section 1111, and then flow out from the second connection section 1112 and flow into the fourth oil outlet passage 30, so as to achieve the flow of hydraulic oil in the restrictor. Meanwhile, the circulation segment 1113 in this embodiment extends from the outer edge of the first body portion 11 toward the inner side of the first body portion 11, which is more convenient for processing and production, and after processing, the port of the circulation segment 1113 at the outer edge of the first body portion 11 is sealed by the action of the jackscrew 40, so that oil can flow from the circulation segment 1113 into the second connection segment 1112 and then into the fourth oil outlet channel 30. Of course, in other embodiments of the present application, other sealing plugs may be used to seal the port of the flow section 1113 at the outer edge of the first body 11, and any other modification is within the scope of the present application.

Further, referring to fig. 5, the first oil passage 124 in the present embodiment includes 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 are coaxially disposed, and the flow area of the first annular passage section 1241 is larger than the flow area of the second annular passage section 1242, where the flow area is the cross-sections of the first annular passage section 1241 and the second annular passage section 1242. The arrangement is that the liquid resistance of the oil on the first annular channel section 1241 is lower, the liquid resistance on the second annular channel is higher, and the flow of the oil flowing out of the fourth oil outlet channel 30 is regulated by the liquid resistance, so that the thickness of an oil film on the hydrostatic guideway 80 is controlled.

Specifically, as shown in connection with fig. 1, the first annular passage section 1241 communicates with the first oil inlet hole 127, the first regulation chamber 211, the first throttle hole 125, the second throttle hole 126, and the first pressure stabilization chamber 212, and the second annular passage communicates with the second throttle hole 126 and the first oil discharge passage 123.

Further, referring to FIG. 10, the second oil passage 144 includes a third annular passage section 1441 and a fourth annular passage section 1442, the third annular passage section 1441 and the fourth annular passage section 1442 are coaxially disposed, and the flow area of the third annular passage section 1441 is larger than the flow area of the fourth annular passage section 1442, where the flow area is the cross-sections of the third annular passage section 1441 and the fourth annular passage section 1442. The arrangement is that the liquid resistance of the oil on the third annular channel section 1441 is lower, the liquid resistance on the fourth annular channel is higher, and the flow of the oil flowing out of the third oil outlet channel 143 is regulated according to the liquid resistance, so that the thickness of an oil film on the hydrostatic guideway 80 is controlled.

Specifically, as shown in connection with fig. 1, the third annular passage section 1441 communicates with the second oil inlet hole 147, the second regulation chamber 221, the third orifice 145, the fourth orifice 146, and the second pressure stabilization chamber 222, and the fourth annular passage section 1442 communicates with the fourth orifice 146 and the third oil discharge passage 143.

Alternatively, the first annular channel section 1241, the second annular channel section 1242, the third annular channel section 1441 and the fourth annular channel section 1442 in the present application may be circular annular channel sections, square annular channel sections, elliptical annular channel sections and the like, and fig. 5 and 10 of the present embodiment show the case when the first annular channel section 1241, the second annular channel section 1242, the third annular channel section 1441 and the fourth annular channel section 1442 are circular annular channel sections.

Further, in order to ensure that hydraulic oil can enter the first adjusting chamber 211, the first pressure stabilizing chamber 212, the second adjusting chamber 221 and the second pressure stabilizing chamber 222, the restrictor in this embodiment is further provided with an oil inlet channel 50, the oil inlet channel 50 is disposed through the second main body 12, the third main body 13 and the fourth main body 14, and the oil inlet channel 50 is communicated with the first orifice 125, the first oil inlet 127, the second oil inlet 147 and the third orifice 145, as shown in fig. 1. So configured, when hydraulic oil enters from the third orifice 145, it may flow from the third orifice 145 through the third annular passage section 1441, then into the fourth orifice 146, and enter into the second pressure stabilizing chamber 222 through the fourth orifice 146; the hydraulic oil may flow from the oil inlet passage 50 into the second oil inlet hole 147 and then into the second regulation chamber 221; the hydraulic oil can flow into the first oil inlet hole 127 from the oil inlet passage 50 and then flow into the first adjusting chamber 211; hydraulic oil may flow from the oil intake passage 50 to the first orifice 125, through the first annular passage section 1241, then into the second orifice 126, and from the second orifice 126 into the first plenum 212.

Further, as shown in fig. 6 to 8, the opposite sides of the third body portion 13 in the present embodiment are provided with a first pre-pressing boss 131 adapted to the first cavity 121 and a second pre-pressing boss 132 adapted to the second cavity 141, the first pre-pressing boss 131 being for applying a pressure to the first film piece 21 in the direction toward the second body portion 12, the second pre-pressing boss 132 being for applying a pressure to the second film piece 22 in the direction toward the fourth body portion 14. Specifically, the first pre-pressing boss 131 applies pressure to the first thin film piece 21 in the direction toward the second main body 12 so that the gap between the first thin film piece 21 and the second main body 12 is 0, and the second pre-pressing boss 132 applies pressure to the second thin film piece 22 in the direction toward the fourth main body 14 so that the gap between the second thin film piece 22 and the fourth main body 14 is 0, resulting in a restrictor having only two paths of hydraulic oil flowing out through the second oil outlet passage 111 and the third oil outlet passage 143, and at this time, the flow rate of hydraulic oil is small.

It will be appreciated that the first pre-pressing boss 131 and the second pre-pressing boss 132 in this embodiment have the same structure, and are symmetrically disposed on opposite sides of the third body portion 13 during actual machining.

Further, referring to fig. 7 to 8, the end surface of the first pre-pressing boss 131 in the present embodiment is provided with a first annular groove 1311, the first annular groove 1311 is for oil supply to flow from the first oil inlet hole 127 into the first regulation chamber 211, the end surface of the second pre-pressing boss 132 is provided with a second annular groove 1321, and the second annular groove 1321 is for oil supply to flow from the second oil inlet hole 147 into the second regulation chamber 221. It is understood that the first annular groove 1311 and the second annular groove 1321 in this embodiment have the same structure.

Specifically, the first annular groove 1311 and the second annular groove 1321 in the present application may be circular annular grooves, square annular grooves, elliptical annular grooves, or the like, and the case where the first annular groove 1311 and the second annular groove 1321 are circular annular grooves is shown in fig. 7 and 8 of the present embodiment.

In actual operation, the first film piece 21 will elastically deform in the first cavity 121 to adjust the oil flow in the first adjusting cavity 211 and the first pressure stabilizing cavity 212, and the second film piece 22 will elastically deform in the second cavity 141 to adjust the oil flow in the second adjusting cavity 221 and the second pressure stabilizing cavity 222. Specifically, the first adjusting cavity 211 and the first pressure stabilizing cavity 212 are internally provided with a first pre-pressing boss 131 and a first annular groove 1311 positioned at the end surface of the first pre-pressing boss 131, and the second adjusting cavity 221 and the second pressure stabilizing cavity 222 are internally provided with a second pre-pressing boss 132 and a second annular groove 1321 positioned at the end surface of the second pre-pressing boss 132, when the first film piece 21 deforms in the first cavity 121 and the second film piece 22 deforms in the second cavity 141, gaps between the first adjusting cavity 211 and the first pressure stabilizing cavity 212 and gaps between the second adjusting cavity 221 and the second pressure stabilizing cavity 222 can be respectively adjusted, and oil flow rates of the first adjusting cavity 211 and the second pressure stabilizing cavity 212 and the second pressure stabilizing cavity 222 can be adjusted.

Further, referring to fig. 3, the restrictor in the present embodiment further includes a seal ring 60, and the seal ring 60 is disposed between the first body portion 11 and the second body portion 12, between the second body portion 12 and the third body portion 13, between the third body portion 13 and the fourth body portion 14, and on a side of the fourth body portion 14 facing away from the third body portion 13. The seal ring 60 positioned between the first main body 11 and the second main body 12 is provided with a dodging hole and other structures for dodging the first oil liquid channel 124; the sealing ring 60 positioned between the second main body part 12 and the third main body part 13 is provided with structures such as avoidance holes for avoiding the first adjusting cavity 211 and the first pressure stabilizing cavity 212; the sealing ring 60 positioned between the third main body part 13 and the fourth main body part 14 is provided with structures such as avoidance holes for avoiding the second adjusting cavity 221 and the second pressure stabilizing cavity 222; the seal ring 60 positioned on the side of the fourth main body 14 away from the third main body 13 is provided with a relief hole for relieving the second oil passage 144. After the restrictor is assembled to the hydrostatic rail 80, gaps between the first body portion 11 and the second body portion 12, between the second body portion 12 and the third body portion 13, between the third body portion 13 and the fourth body portion 14, and between the fourth body portion 14 and the hydrostatic rail 80 can be sealed by the action of the seal ring 60.

Further, the first body 11, the second body 12, the third body 13 and the fourth body 14 in this embodiment are all 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 all directly and fixedly connected to the side surface of the hydrostatic guideway 80 through bolts 70, fig. 11 in this embodiment shows the situation when the bolts 70 are four, and fig. 11 shows the installation position of the restrictor, and the fourth main body 14 is in contact with the hydrostatic guideway 80 in this embodiment, so that the problems that the tandem type thin film feedback restrictor is far from the oil cavity, is greatly influenced by the compressibility of lubricating oil and has low response speed can be solved, besides, the restrictor is arranged according to the embodiment of the application, the problem that the single side-mounted thin film feedback restrictor can only control a single oil cavity, when the number of the oil cavities is large, the number of the restrictors is also large at the same time, so that the inner oil path of the hydrostatic guideway 80 is complex, and the surface of the hydrostatic guideway 80 has no sufficient space for arranging the restrictor can be solved.

According to the embodiment, the second main body part and the fourth main body part with the same structure are symmetrically arranged at the two ends of the third main body part, and the second oil outlet channel and the fourth oil outlet channel are additionally arranged, so that the defect that the side-mounted thin film feedback throttler can only control a single oil cavity, and the number of throttlers is required to be increased when the number of the oil cavities is increased, and the internal oil way of the hydrostatic guideway is complex is overcome. Meanwhile, the throttler is arranged on the side face of the hydrostatic guideway, so that the defect that the series thin film feedback throttler is far away from the oil cavity is overcome.

On the other hand, the embodiment of the application also provides a hydrostatic guideway which comprises the restrictor, and therefore, the hydrostatic guideway comprises all technical effects of the restrictor. Since the technical effects of the throttle have been described in detail in the foregoing, a detailed description thereof will be omitted.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should 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.