Guide rail assembly and transport system
By designing grooves and sub-flow channels in the guide rail assembly to form an air film, the problem of poor stability of the slider during the guide rail movement is solved, the stability and centering performance of the slider are improved, and the overall stability of the transportation system is enhanced .
Patent Information
- Application Number
- CN202420083894.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-12
AI Technical Summary
During the movement of the guide rail, the slider is prone to swing horizontally in the direction perpendicular to the extension of the guide rail, resulting in poor motion stability.
A guide rail assembly is designed, wherein the guide rail has a groove, the slider has an insertion portion and a secondary flow channel, and an air film is formed in the gap to reduce friction, and the sliding member is prevented from colliding with the groove side wall through the air film, thereby improving stability.
Effectively alleviate the horizontal swing of the slider, improve the movement stability and centering performance of the slider, reduce friction between the guide rail components, and enhance the operating stability of the transportation system.
Smart Images
Figure CN222225141U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of transportation technology, and in particular to a guide rail assembly and a transportation system. Background Art
[0002] The working principle of the air-floating guide rail is based on the principle of gas compression and discharge. By compressing the gas and injecting it into the guide rail, a gas layer is formed, which generates gas buoyancy between the guide rail and the transported object, thereby realizing the suspension and movement of the object on the guide rail.
[0003] In the related art, the guide rail assembly may include a guide rail and a slider, and the slider moves on the guide rail along the extension direction of the guide rail. By filling the gap between the slider and the guide rail with high pressure gas to form an air film in the gap, the air film can support the slider to float, thereby achieving the purpose of non-contact suspension between the slider and the guide rail, and reducing the friction between the slider and the guide rail.
[0004] However, during the movement of the slider relative to the guide rail, the slider tends to swing horizontally along a direction perpendicular to the extension direction of the guide rail, thereby causing poor movement stability of the slider. Utility Model Content
[0005] In view of at least one of the above technical problems, an embodiment of the present application provides a guide rail assembly and a transportation system, which can alleviate the horizontal swinging of the sliding member along the extension direction perpendicular to the guide rail, thereby improving the movement stability of the sliding member and improving the operation stability of the transportation system.
[0006] The embodiments of the present application provide the following technical solutions:
[0007] The first aspect of the embodiment of the present application provides a guide rail assembly, including a plurality of guide rails and a plurality of sliding members, the plurality of guide rails and the plurality of sliding members are arranged one by one, and each guide rail extends in a preset direction. In the corresponding guide rails and sliding members, the sliding member moves in a preset direction relative to the guide rail, the guide rail has a groove, the groove extends in a preset direction, the notch of the groove is located on the top surface of the guide rail, and the sliding member has an insertion portion, and the insertion portion is inserted in the groove. The groove includes a first groove side wall and a second groove side wall spaced along the groove width direction of the groove, and a secondary flow channel is arranged in the insertion portion, the secondary flow channel is used to communicate with a gas medium source, the secondary flow channel includes a first secondary flow channel and a second secondary flow channel, the outlet of the first secondary flow channel faces the first groove side wall, and the outlet of the second secondary flow channel faces the second groove side wall. When the guide rail assembly is in a working state, the pressure of the gas medium at the outlet of the first secondary flow channel is equal to the pressure of the gas medium at the outlet of the second secondary flow channel.
[0008] The guide rail assembly provided in the embodiment of the present application includes a plurality of guide rails and a plurality of sliding members, the plurality of guide rails and the plurality of sliding members are arranged one by one, and each guide rail extends in a preset direction. In the corresponding guide rails and sliding members, the sliding member moves in a preset direction relative to the guide rail, the guide rail has a groove, the groove extends in a preset direction, the notch of the groove is located on the top surface of the guide rail, the sliding member has an insertion portion, and the insertion portion is inserted in the groove; the groove includes a first groove side wall and a second groove side wall spaced apart in the groove width direction of the groove, a secondary flow channel is arranged in the insertion portion, the secondary flow channel is used to communicate with a gas medium source, the secondary flow channel includes a first secondary flow channel and a second secondary flow channel, the outlet of the first secondary flow channel faces the first groove side wall, and the outlet of the second secondary flow channel faces the second groove side wall. A first gap is formed between the first groove side wall and the insertion portion, and a second gap is formed between the second groove side wall and the insertion portion. With such arrangement, the gas medium output from the outlet of the first secondary flow channel can form an air film in the first gap, which is conducive to maintaining the first gap greater than 0, so that there is no contact between the first groove side wall and the insertion part, and the friction between the insertion part and the first groove side wall can be reduced. The gas medium output from the outlet of the second secondary flow channel can form an air film in the second gap, which is conducive to maintaining the second gap greater than 0, so that there is no contact between the second groove side wall and the insertion part, and the friction between the insertion part and the second groove side wall can be reduced. During the movement of the sliding part, if the sliding part is disturbed by imbalance or misalignment, the air film can hinder the movement of the sliding part toward the groove side wall of the groove, alleviate the mutual collision between the sliding part and the groove side wall of the groove, and alleviate the horizontal swing of the sliding part along the extension direction perpendicular to the guide rail, thereby improving the movement stability of the sliding part. In addition, when the guide rail assembly is in working state, the pressure of the gas medium at the outlet of the first secondary flow channel is equal to the pressure of the gas medium at the outlet of the second secondary flow channel, which is conducive to reducing the difference between the width of the first gap and the width of the second gap, so that the width of the first gap is close to the width of the second gap (or the same), thereby improving the centering performance of the sliding member. During the movement of the sliding member, since the width of the first gap is close to the width of the second gap, the widths of the first gap and the second gap are both large, even if the sliding member swings horizontally along the extension direction perpendicular to the guide rail, the sliding member is not easy to collide with the groove side wall of the groove, thereby further alleviating the collision between the sliding member and the groove side wall of the groove, and further improving the movement stability of the sliding member.
[0009] In a possible embodiment, in the corresponding guide rail and sliding member, a support member is provided on the bottom wall of the groove, and the support member extends in a preset direction. Along the groove width direction of the groove, the support member includes a first outer wall and a second outer wall arranged at intervals, the first outer wall faces the first groove side wall, and the second outer wall faces the second groove side wall. The insertion portion includes a first sub-insertion portion and a second sub-insertion portion arranged at intervals, the first sub-insertion portion is located between the first groove side wall and the first outer wall, and the second sub-insertion portion is located between the second groove side wall and the second outer wall. The secondary flow channel also includes a third secondary flow channel and a fourth secondary flow channel, the first secondary flow channel and the third secondary flow channel are both located in the first sub-insertion portion, the second secondary flow channel and the fourth secondary flow channel are both located in the second sub-insertion portion, the outlet of the third secondary flow channel faces the first outer wall, and the outlet of the fourth secondary flow channel faces the second outer wall. When the guide rail assembly is in working state, the pressure of the gas medium at the outlet of the third secondary flow channel and the fourth secondary flow channel is less than the pressure of the gas medium at the outlet of the first secondary flow channel.
[0010] In a possible embodiment, in the same sliding part, the first sub-runner and the second sub-runner are connected to each other. The first sub-runner includes a plurality of first sub-runners, the second sub-runner includes a plurality of second sub-runners, the plurality of first sub-runners and the plurality of second sub-runners are arranged at intervals along the groove depth direction of the groove, the plurality of first sub-runners and the plurality of second sub-runners are arranged one by one, the first sub-runners and the corresponding second sub-runners have the same horizontal height and the same opening size, the direction from the inlet to the outlet of the first sub-runner is the same as the direction from the first outer wall to the first groove side wall, and the direction from the inlet to the outlet of the second sub-runner is the same as the direction from the second outer wall to the second groove side wall.
[0011] In a possible embodiment, in the same sliding part, the third sub-flow channel and the fourth sub-flow channel are connected, the third sub-flow channel includes a plurality of third sub-flow channels, the fourth sub-flow channel includes a plurality of fourth sub-flow channels, the plurality of third sub-flow channels and the plurality of fourth sub-flow channels are arranged at intervals along the groove depth direction of the groove, the plurality of third sub-flow channels and the plurality of fourth sub-flow channels are arranged one by one, the third sub-flow channels and the corresponding fourth sub-flow channels have the same horizontal height, the direction from the inlet to the outlet of the third sub-flow channel is the same as the direction from the first groove side wall to the first outer wall, and the direction from the inlet to the outlet of the fourth sub-flow channel is the same as the direction from the second groove side wall to the second outer wall.
[0012] In a possible implementation manner, the ratio of the outlet area of the third and fourth sub-sub-channels to the outlet area of the first sub-channel is in the range of 1 / 25-1 / 9.
[0013] In a possible embodiment, on the same sliding member, there is a main channel in the sliding member, the main channel includes a first main channel and a second main channel that are connected, the first main channel is connected to the first sub-channel and the third sub-channel, the second main channel is connected to the second sub-channel and the fourth sub-channel, and the first main channel and the second main channel are used to connect to a gas medium source.
[0014] In a possible implementation, on the same sliding member, the main channel includes a third main channel, the first main channel and the second main channel are connected through the third main channel, the secondary channel includes a plurality of fifth secondary channels, and the plurality of fifth secondary channels are all located in the sliding member between the first sub-insertion portion and the second sub-insertion portion. The outlets of the plurality of fifth secondary channels are all facing the top surface of the support member, and are spaced apart along the groove width direction of the groove.
[0015] In a possible embodiment, on the same sliding member, the sliding member includes a first sliding portion, a second sliding portion and a third sliding portion, and the first sliding portion and the third sliding portion are located at both ends of the second sliding portion along a preset direction. The main flow channel and the secondary flow channel are both located in the second sliding portion and penetrate the second sliding portion along a preset direction. The first sliding portion has a first air inlet hole and a second air inlet hole, and the first air inlet hole and the second air inlet hole penetrate the first sliding portion along a preset direction. The first air inlet hole is connected to the first main flow channel, and the second air inlet hole is connected to the second main flow channel. The first air inlet hole and the second air inlet hole are used to communicate with a gas medium source.
[0016] In a possible implementation manner, on the same sliding member, a sealing member is provided between at least one of the first sliding portion and the second sliding portion and between the third sliding portion and the second sliding portion.
[0017] It can be realized that the guide rail assembly includes a connecting member, the connecting member extends along the groove width direction of the groove, and the connecting member is connected to the top surface of each sliding member.
[0018] A second aspect of an embodiment of the present application provides a transport system, comprising a transport device and the guide rail assembly of the first aspect, wherein at least one of a connecting member and a sliding member of the guide rail assembly is connected to the transport device.
[0019] The transport system provided by the embodiment of the present application may include a guide rail assembly, the guide rail assembly includes a plurality of guide rails and a plurality of sliding members, the plurality of guide rails and the plurality of sliding members are arranged one by one, and each guide rail extends along a preset direction. In the corresponding guide rails and sliding members, the sliding member moves along a preset direction relative to the guide rail, the guide rail has a groove, the groove extends along a preset direction, the notch of the groove is located on the top surface of the guide rail, the sliding member has an insertion portion, and the insertion portion is inserted in the groove; the groove includes a first groove side wall and a second groove side wall arranged at intervals along the groove width direction of the groove, and a secondary flow channel is arranged in the insertion portion, the secondary flow channel is used to communicate with a gas medium source, the secondary flow channel includes a first secondary flow channel and a second secondary flow channel, the outlet of the first secondary flow channel faces the first groove side wall, and the outlet of the second secondary flow channel faces the second groove side wall. A first gap is formed between the first groove side wall and the insertion portion, and a second gap is formed between the second groove side wall and the insertion portion. With such arrangement, the gas medium output from the outlet of the first secondary flow channel can form an air film in the first gap, which is conducive to maintaining the first gap greater than 0, so that there is no contact between the first groove side wall and the insertion part, and the friction between the insertion part and the first groove side wall can be reduced. The gas medium output from the outlet of the second secondary flow channel can form an air film in the second gap, which is conducive to maintaining the second gap greater than 0, so that there is no contact between the second groove side wall and the insertion part, and the friction between the insertion part and the second groove side wall can be reduced. During the movement of the sliding part, if the sliding part is disturbed by imbalance or misalignment, the air film can hinder the movement of the sliding part toward the groove side wall of the groove, alleviate the mutual collision between the sliding part and the groove side wall of the groove, and alleviate the horizontal swing of the sliding part along the extension direction perpendicular to the guide rail, thereby improving the movement stability of the sliding part. In addition, when the guide rail assembly is in working state, the pressure of the gas medium at the outlet of the first secondary flow channel is equal to the pressure of the gas medium at the outlet of the second secondary flow channel, which is conducive to reducing the difference between the width of the first gap and the width of the second gap, so that the width of the first gap is close to the width of the second gap (or the same), thereby improving the centering performance of the sliding member. During the movement of the sliding member, since the width of the first gap is close to the width of the second gap, the widths of the first gap and the second gap are both large, even if the sliding member swings horizontally along the extension direction perpendicular to the guide rail, the sliding member is not easy to collide with the groove side wall of the groove, thereby further alleviating the collision between the sliding member and the groove side wall of the groove, and further improving the movement stability of the sliding member.
[0020] The construction of the present application as well as its other objects and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 A schematic diagram of the structure of the guide rail assembly provided in an embodiment of the present application;
[0023] Figure 2 A top view of the guide rail assembly provided in an embodiment of the present application;
[0024] Figure 3 A partial cross-sectional view of the guide rail assembly provided in an embodiment of the present application.
[0025] Description of reference numerals:
[0026] 100: guide rail assembly; 110: guide rail;
[0027] 120: groove; 120a: first sub-groove;
[0028] 120b: second sub-groove; 121: first groove sidewall;
[0029] 122: side wall of the second groove; 130: sliding member;
[0030] 130a: an insertion portion; 130b: a first sub-insertion portion;
[0031] 130c: second sub-insertion portion; 131: first sliding portion;
[0032] 132: second sliding part; 133: third sliding part;
[0033] 140: secondary flow channel; 141: first secondary flow channel;
[0034] 1411: first sub-channel; 142: second sub-channel;
[0035] 1422: second sub-channel; 143: third sub-channel;
[0036] 1433: the third sub-flow channel; 144: the fourth sub-flow channel;
[0037] 1444: fourth sub-flow channel; 145: fifth sub-flow channel;
[0038] 150: main flow channel; 151: first main flow channel;
[0039] 152: second main flow channel; 153: third main flow channel;
[0040] 160: support member; 161: first outer wall;
[0041] 162: second outer wall; 171: first air inlet;
[0042] 172: second air inlet hole; 181: first gap;
[0043] 182: second gap; 183: third gap;
[0044] 184: fourth gap; 191: first fixing member;
[0045] 192: second fixing member; 193: connecting member;
[0046] 194: Seals. DETAILED DESCRIPTION
[0047] In the related art, the guide rail assembly may include a guide rail and a slider, and the slider may move on the guide rail along the extension direction of the guide rail. The guide rail may have a groove, and the groove may extend along the extension direction of the guide rail, and the bottom of the slider may be inserted into the groove. By filling a high-pressure gas into the gap between the bottom surface of the slider and the bottom wall of the groove to form an air film in the gap, the air film may support the slider to float upward, thereby achieving the purpose of non-contact suspension between the slider and the guide rail, so as to reduce the friction between the slider and the guide rail.
[0048] Wherein, along the groove width direction of the groove, the slider may include a first surface and a second surface arranged at intervals, the groove may include a first groove side wall and a second groove side wall, the first surface may face the first groove side wall, and the second surface may face the second groove side wall. There is a first gap between the first surface and the first groove side wall, and there is a second gap between the second surface and the second groove side wall.
[0049] However, due to machining errors of both the slider and the guide rail, the difference between the width of the first gap and the width of the second gap is relatively large. For example, taking the first gap being smaller than the second gap as an example, the first gap may be smaller or even equal to 0. During the movement of the slider, for example, after the slider is disturbed by imbalance or misalignment, the slider may further move toward the side wall of the first groove, causing the side wall of the first groove and the first surface to collide with each other. Under the action of the disturbance and the collision, the slider will swing horizontally along the extension direction perpendicular to the guide rail, thereby making the movement stability of the slider poor and increasing the friction between the slider and the guide rail.
[0050] Based on at least one of the above technical problems, an embodiment of the present application provides a guide rail assembly and a transportation system, wherein the guide rail assembly includes a plurality of guide rails and a plurality of sliding members, wherein the plurality of guide rails and the plurality of sliding members are arranged one by one, and each guide rail extends along a preset direction. In the corresponding guide rails and sliding members, the sliding member moves relative to the guide rail along a preset direction, the guide rail has a groove, the groove extends along a preset direction, the notch of the groove is located on the top surface of the guide rail, the sliding member has an insertion portion, and the insertion portion is inserted in the groove; the groove includes a first groove side wall and a second groove side wall arranged at intervals along the groove width direction of the groove, and a secondary flow channel is arranged in the insertion portion, the secondary flow channel is used to communicate with a gas medium source, and the secondary flow channel includes a first secondary flow channel and a second secondary flow channel, the outlet of the first secondary flow channel faces the first groove side wall, and the outlet of the second secondary flow channel faces the second groove side wall. A first gap is formed between the first groove side wall and the insertion portion, and a second gap is formed between the second groove side wall and the insertion portion. With such arrangement, the gas medium output from the outlet of the first secondary flow channel can form an air film in the first gap, which is conducive to maintaining the first gap greater than 0, so that there is no contact between the first groove side wall and the insertion part, and the friction between the insertion part and the first groove side wall can be reduced. The gas medium output from the outlet of the second secondary flow channel can form an air film in the second gap, which is conducive to maintaining the second gap greater than 0, so that there is no contact between the second groove side wall and the insertion part, and the friction between the insertion part and the second groove side wall can be reduced. During the movement of the sliding part, if the sliding part is disturbed by imbalance or misalignment, the air film can hinder the movement of the sliding part toward the groove side wall of the groove, alleviate the mutual collision between the sliding part and the groove side wall of the groove, and alleviate the horizontal swing of the sliding part along the extension direction perpendicular to the guide rail, thereby improving the movement stability of the sliding part. In addition, when the guide rail assembly is in working state, the pressure of the gas medium at the outlet of the first secondary flow channel is equal to the pressure of the gas medium at the outlet of the second secondary flow channel, which is conducive to reducing the difference between the width of the first gap and the width of the second gap, so that the width of the first gap is close to the width of the second gap (or the same), thereby improving the centering performance of the sliding member. During the movement of the sliding member, since the width of the first gap is close to the width of the second gap, the widths of the first gap and the second gap are both large, even if the sliding member swings horizontally along the extension direction perpendicular to the guide rail, the sliding member is not easy to collide with the groove side wall of the groove, thereby further alleviating the collision between the sliding member and the groove side wall of the groove, and further improving the movement stability of the sliding member.
[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0052] The following will be combined Figure 1-Figure 3 The transportation system provided in the embodiment of the present application is described.
[0053] The embodiment of the present application provides a transport system, which may include a transport device and a guide rail assembly 100, and the guide rail assembly 100 may include at least one guide rail 110. When there are multiple guide rails 110, the multiple guide rails 110 may extend along a preset direction, that is, the extension direction of the guide rail 110. The multiple guide rails 110 may be arranged at intervals perpendicular to the preset direction.
[0054] In some embodiments, the transport device can move relative to the guide rail 110 along the extension direction of the guide rail 110. The transport device can be used to carry the object to be transported. The transport device moves on the guide rail 110 to transport the object to be transported to a desired location.
[0055] In some embodiments, the transport system can be used in measurement, lithography, machine tools and other fields.
[0056] The guide rail assembly 100 provided in an embodiment of the present application is described below.
[0057] The present application embodiment provides a guide rail assembly 100, see Figure 1 , the guide rail assembly 100 may include at least one guide rail 110 and at least one sliding member 130. In some embodiments, one guide rail 110 may be provided corresponding to at least one sliding member 130. The embodiment of the present application is described by taking the example that one guide rail 110 may be provided corresponding to one sliding member 130. When there are multiple guide rails 110 and multiple sliding members 130, the multiple guide rails 110 and the multiple sliding members 130 are provided in a one-to-one correspondence. The sliding member 130 may be movably provided on the corresponding guide rail 110 along a preset direction. For example, the guide rail 110 may include 2, 3, 4 or 5 or more. The embodiment of the present application is described by taking the example that the number of guide rails 110 and sliding members 130 are both 2.
[0058] In some embodiments, the two guide rails 110 may be a first guide rail and a second guide rail, and the two slide members 130 may be a first slide member and a second slide member. The first guide rail and the second guide rail may be parallel to each other, thereby ensuring that the distance between the first slide member and the second slide member does not change.
[0059] In some embodiments, when the guide rail assembly 100 is in operation, the gas medium may form an air film between the guide rail 110 and the corresponding sliding member 130 , and the air film may at least be used to support the sliding member 130 to float.
[0060] See also Figure 1 In some embodiments, the guide rail assembly 100 may include a connector 193, and the connector 193 may be connected to the two sliding members 130. For example, the connector 193 may be connected to the top surface of the sliding member 130, so as to avoid mutual interference between the connector 193 and the guide rail 110. For example, the connector 193 may extend along the width direction of the guide rail 110, and the two ends of the connector 193 are respectively connected to the two sliding members 130 to form a stable "H"-shaped overall structure. When one of the first sliding member and the second sliding member is disturbed along a preset direction and has a swinging tendency along a preset direction, the other of the first sliding member and the second sliding member restricts the swing through the connector, so as to alleviate the swing of the "H"-shaped overall structure along the preset direction, reduce the spatial motion error of the "H"-shaped overall structure caused by imbalance along the preset direction, and thus help improve the linear motion accuracy and stability of the "H"-shaped overall structure.
[0061] In some embodiments, see Figure 2 The connecting member 193 and the sliding member 130 may be connected via a second fixing member 192. At least one second fixing member 192 may be provided between the same sliding member 130 and the connecting member 193. For example, the second fixing member 192 may be a bolt.
[0062] In some embodiments, the connecting member 193 and the guide rail 110 may be perpendicular to each other, which may further ensure that the distance between the first sliding member and the second sliding member is the shortest.
[0063] In some embodiments, at least one of the connecting member 193 and the sliding member 130 may be connected to the transport device to support and drive the transport device to move.
[0064] The guide rail 110 and the corresponding sliding member 130 provided in the embodiment of the present application are described below.
[0065] See also Figure 1In the corresponding guide rail 110 and sliding member 130, the guide rail 110 may have a groove 120, the groove 120 may extend in a preset direction, and the groove width direction of the groove 120 may be the same as the width direction of the guide rail 110. The sliding member 130 may have an insertion portion 130a, and the insertion portion 130a may be inserted in the groove 120. The insertion portion 130a moves in the groove 120 relative to the guide rail 110 in a preset direction. For example, the notch of the groove 120 may be located on the top surface of the guide rail 110, so that the difficulty of inserting the insertion portion 130a into the groove 120 can be reduced.
[0066] In some embodiments, see Figure 1 and Figure 3 In the corresponding guide rail 110 and sliding member 130, the groove 120 may include a first groove side wall 121 and a second groove side wall 122 spaced apart along the groove width direction of the groove 120. A secondary flow channel 140 may be provided in the insertion portion 130a, and the secondary flow channel 140 may be used to communicate with an external gas medium source, and the gas medium source may be used to provide gas medium to the secondary flow channel 140. Among them, the gas medium source may not belong to the guide rail assembly and the transportation system.
[0067] In some embodiments, see Figure 1 and Figure 3, the secondary flow channel 140 may include a first secondary flow channel 141 and a second secondary flow channel 142, the outlet of the first secondary flow channel 141 may face the first groove side wall 121, the outlet of the second secondary flow channel 142 may face the second groove side wall 122, a first gap 181 is provided between the insertion portion 130a and the first groove side wall 121, and a second gap 182 is provided between the insertion portion 130a and the second groove side wall 122. In such a configuration, the gas medium output from the outlet of the first secondary flow channel 141 may form an air film in the first gap 181, and the air film is conducive to maintaining the first gap 181 greater than 0, so that there is no contact between the first groove side wall 121 and the insertion portion 130a, and the friction between the insertion portion 130a and the first groove side wall 121 can be reduced. The gas medium output from the outlet of the second secondary flow channel 142 can form an air film in the second gap 182, which is conducive to maintaining the second gap 182 greater than 0, so that there is no contact between the second groove side wall 122 and the insertion part 130a, and the friction between the insertion part 130a and the second groove side wall 122 can be reduced. During the movement of the sliding member 130, if the sliding member 130 is disturbed by imbalance or misalignment, the air film in the first gap 181 and the second gap 182 can hinder the sliding member 130 from moving toward the groove side wall (the first groove side wall 121 and / or the second groove side wall 122) of the groove 120, alleviate the mutual collision between the sliding member 130 and the groove side wall of the groove 120, and alleviate the horizontal swing of the sliding member 130 along the extension direction perpendicular to the guide rail 110, thereby improving the movement stability of the sliding member 130 and reducing the friction between the sliding member 130 and the guide rail 110.
[0068] In some embodiments, when the guide rail assembly 100 is in working state, the pressure of the gas medium at the outlet of the first secondary flow channel 141 is equal to the pressure of the gas medium at the outlet of the second secondary flow channel 142, so as to generate an air film with a self-balancing function in the first gap 181 and the second gap 182, so that the air films in the first gap 181 and the second gap 182 are consistent, which is beneficial to reduce the difference between the width of the first gap 181 and the width of the second gap 182, and can make the width of the first gap 181 and the width of the second gap 182 close to (or the same), so that the sliding member 130 has a self-centering function, so that the working performance of the guide rail assembly 100 is improved. During the movement of the sliding member 130, since the width of the first gap 181 and the width of the second gap 182 are close, the widths of the first gap 181 and the second gap 182 are both relatively large. Even if the sliding member 130 swings horizontally along the extension direction perpendicular to the guide rail 110, the sliding member 130 is not easy to collide with the side walls of the groove 120, thereby further alleviating the mutual collision between the sliding member 130 and the side walls of the groove 120 and further improving the movement stability of the sliding member 130.
[0069] In some embodiments, see Figure 1 and Figure 3 In the corresponding guide rail 110 and sliding member 130, a support member 160 may be provided on the groove bottom wall of the groove 120, and the support member 160 may extend along a preset direction. For example, when the guide rail assembly 100 is in a non-working state (no air film is formed between the sliding member 130 and the guide rail 110), the sliding member 130 may be in a stationary state, and at least one of the support member 160, the groove bottom wall of the first sub-groove 120a, the groove bottom wall of the second sub-groove 120b, the guide rail 110 at the first groove side wall 121, and the guide rail 110 at the second groove side wall 122 may contact the sliding member 130 to support the sliding member 130. After the support member 160 is provided in the groove 120 of the guide rail 110, the cross-sectional shape of the guide rail 110 along the direction perpendicular to the preset direction may be a symmetrical "E" shape.
[0070] In some embodiments, see Figure 1 and Figure 3 Along the groove width direction of the groove 120, the support member 160 may include a first outer wall 161 and a second outer wall 162 arranged at intervals, the first outer wall 161 faces the first groove side wall 121, and the second outer wall 162 faces the second groove side wall 122. A first sub-groove 120a may be formed between the first groove side wall 121 and the first outer wall 161, and a second sub-groove 120b may be formed between the second groove side wall 122 and the second outer wall 162. Along the groove width direction of the groove 120, the insertion portion 130a may include a first sub-insertion portion 130b and a second sub-insertion portion 130c arranged at intervals, and the first sub-insertion portion 130b may be located between the first groove side wall 121 and the first outer wall 161, that is, the first sub-insertion portion 130b is inserted into the first sub-groove 120a. The second sub-insertion portion 130 c may be located between the second groove sidewall 122 and the second outer wall 162 , that is, the second sub-insertion portion 130 c is inserted into the second sub-groove 120 b .
[0071] In some embodiments, see Figure 1 and Figure 3 The first secondary flow channel 141 may be located in the first sub-insertion portion 130b, and the outlet of the first secondary flow channel 141 may be located on the surface of the first sub-insertion portion 130b facing the first groove sidewall 121. The second secondary flow channel 142 may be located in the second sub-insertion portion 130c, and the outlet of the second secondary flow channel 142 may be located on the surface of the second sub-insertion portion 130c facing the second groove sidewall 122. A first gap 181 is formed between the first sub-insertion portion 130b and the first groove sidewall 121, and a second gap 182 is formed between the second sub-insertion portion 130c and the second groove sidewall 122.
[0072] In some embodiments, see Figure 1 and Figure 3, the secondary flow channel 140 may also include a third secondary flow channel 143 and a fourth secondary flow channel 144. The third secondary flow channel 143 may be located in the first sub-insertion portion 130b, and the fourth secondary flow channel 144 may be located in the second sub-insertion portion 130c. A third gap 183 is formed between the first sub-insertion portion 130b and the first outer wall 161, and a fourth gap 184 is formed between the second sub-insertion portion 130c and the second outer wall 162. The outlet of the third secondary flow channel 143 may face the first outer wall 161, and the gas medium output from the outlet of the third secondary flow channel 143 may form an air film in the third gap 183, which may reduce the friction between the insertion portion 130a and the first outer wall 161, and may also alleviate the horizontal swing of the sliding member 130 along the extension direction perpendicular to the guide rail 110, thereby improving the movement stability of the sliding member 130. The principle has been explained and will not be repeated. The outlet of the fourth secondary flow channel 144 can be toward the second outer wall 162, and the gas medium output from the outlet of the fourth secondary flow channel 144 can form an air film in the fourth gap 184, which can reduce the friction between the insertion portion 130a and the second outer wall 162, and can also alleviate the horizontal swing of the sliding member 130 along the extension direction perpendicular to the guide rail 110, thereby improving the movement stability of the sliding member 130. The principle has been explained and will not be repeated here.
[0073] In some embodiments, when the guide rail assembly 100 is in working state, the pressure of the gas medium at the outlet of the third secondary flow channel 143 and the fourth secondary flow channel 144 can be lower than the pressure of the gas medium at the outlet of the first secondary flow channel 141 (the second secondary flow channel 142), thereby reducing the influence of the third secondary flow channel 143 and the fourth secondary flow channel 144 on the centering performance of the sliding part 130.
[0074] The same sliding member 130 provided in the embodiment of the present application is described below.
[0075] In some embodiments, see Figure 1 and Figure 3 In the same sliding part 130, the first sub-flow channel 141 and the second sub-flow channel 142 can be connected to each other, the first sub-flow channel 141 can include a plurality of first sub-flow channels 1411, and the second sub-flow channel 142 can include a plurality of second sub-flow channels 1422. The plurality of first sub-flow channels 1411 and the plurality of second sub-flow channels 1422 can be arranged at intervals along the groove depth direction of the groove 120. The gas medium output from the outlets of the plurality of first sub-flow channels 1411 has a relatively uniform force on the first groove side wall 121, and the gas medium output from the outlets of the plurality of second sub-flow channels 1422 has a relatively uniform force on the second groove side wall 122.
[0076] In some embodiments, a plurality of first sub-sub-channels 1411 and a plurality of second sub-sub-channels 1422 may be provided in one-to-one correspondence. The horizontal heights of the first sub-channels 1411 and the corresponding second sub-channels 1422 may be the same, and the opening sizes may be the same, so as to facilitate the pressure of the gas medium at the outlet of the first sub-channels 1411 and the pressure of the gas medium at the outlet of the corresponding second sub-channels 1422 to be the same, so as to facilitate the total pressure of the gas medium at the outlet of the plurality of first sub-channels 1411 and the total pressure of the gas medium at the outlet of the plurality of second sub-channels 1422 to be the same, so as to facilitate the pressure of the gas medium at the outlet of the first sub-channel 141 to be equal to the pressure of the gas medium at the outlet of the second sub-channel 142, so as to enable the sliding member 130 to have a self-centering function.
[0077] In some embodiments, see Figure 3 The direction from the inlet to the outlet of the first sub-sub-channel 1411 is the same as the direction from the first outer wall 161 to the first groove side wall 121, so that the gas medium output from the outlet of the first sub-sub-channel 1411 is opposite to the first groove side wall 121, and the direction from the inlet to the outlet of the second sub-sub-channel 1422 is the same as the direction from the second outer wall 162 to the second groove side wall 122, so that the gas medium output from the outlet of the second sub-sub-channel 1422 is opposite to the second groove side wall 122, which can better alleviate the horizontal swing of the sliding part 130 along the extension direction perpendicular to the guide rail 110, and can also reduce the difficulty of preparing the first sub-sub-channel 1411 and the second sub-sub-channel 1422.
[0078] In some embodiments, see Figure 3 In the same sliding member 130, the third sub-flow channel 143 and the fourth sub-flow channel 144 may be connected. The third sub-flow channel 143 may include a plurality of third sub-flow channels 1433, and the fourth sub-flow channel 144 may include a plurality of fourth sub-flow channels 1444. The plurality of third sub-flow channels 1433 and the plurality of fourth sub-flow channels 1444 may be arranged at intervals along the groove depth direction of the groove 120. The gas medium outputted from the outlets of the plurality of third sub-flow channels 1433 exerts a relatively uniform force on the first outer wall 161, and the gas medium outputted from the outlets of the plurality of fourth sub-flow channels 1444 exerts a relatively uniform force on the second outer wall 162.
[0079] In some embodiments, multiple third sub-channels 1433 and multiple fourth sub-channels 1444 can be arranged in one-to-one correspondence, and the horizontal heights of the third sub-channels 1433 and the corresponding fourth sub-channels 1444 can be the same, thereby reducing the design difficulty of the third sub-channels 1433 and the fourth sub-channels 1444.
[0080] In some embodiments, the direction from the inlet to the outlet of the third sub-sub-channel 1433 can be the same as the direction from the first groove side wall 121 to the first outer wall 161, and the direction from the inlet to the outlet of the fourth sub-sub-channel 1444 can be the same as the direction from the second groove side wall 122 to the second outer wall 162, so that the gas medium output from the outlet of the third sub-sub-channel 1433 faces the first outer wall 161, and the gas medium output from the outlet of the fourth sub-sub-channel 1444 faces the second outer wall 162, which can better alleviate the horizontal swing of the sliding member 130 along the extension direction perpendicular to the guide rail 110, and can also reduce the difficulty of preparing the third sub-sub-channel 1433 and the fourth sub-sub-channel 1444.
[0081] In some embodiments, on the first sub-insertion portion 130b, a first sub-sub-channel 1411 and a third sub-sub-channel 1433 may be alternately arranged along the groove depth direction of the groove 120. On the second sub-insertion portion 130c, a second sub-sub-channel 1422 and a fourth sub-sub-channel 1444 may be alternately arranged along the groove depth direction of the groove 120.
[0082] In some embodiments, the ratio of the outlet area of the third and fourth sub-sub-channels 1433 and 1444 to the outlet area of the first sub-channel 1411 may be in the range of 1 / 25-1 / 9, thereby preventing the outlet areas of the third and fourth sub-channels 1433 and 1444 from being too small to form a stable air film, and preventing the outlet areas of the third and fourth sub-channels 1433 and 1444 from being too large to affect the centering performance of the sliding member 130. For example, the ratio may be 1 / 25, 1 / 16, 1 / 9, or any value between 1 / 25 and 1 / 9.
[0083] In some embodiments, see Figure 3 On the same sliding member 130, there may be a main channel 150 in the sliding member 130, and the main channel 150 may include a first main channel 151 and a second main channel 152 that are connected, the first main channel 151 may be connected to the first sub-channel 141 and the third sub-channel 143, the second main channel 152 may be connected to the second sub-channel 142 and the fourth sub-channel 144, the first main channel 151 and the second main channel 152 may be used to be connected to a gas medium source, so that the gas medium is input into the first sub-channel 141 and the third sub-channel 143 through the first main channel 151, and the gas medium is input into the second sub-channel 142 and the fourth sub-channel 144 through the second main channel 152.
[0084] In some embodiments, the main flow channel 150 may include a third main flow channel 153, and the first main flow channel 151 and the second main flow channel 152 may be connected through the third main flow channel 153. The secondary flow channel 140 may include a plurality of fifth secondary flow channels 145, and the plurality of fifth secondary flow channels 145 may be located in the sliding member 130 between the first sub-insertion portion 130b and the second sub-insertion portion 130c, and the outlet of each fifth secondary flow channel 145 may be oriented toward the top surface of the support member 160, so that an air film may be formed between the top surface of the support member 160 and the sliding member 130, and the air film between the sliding member 130 and the top surface of the support member 160 may prevent direct contact between the sliding member 130 and the top surface of the support member 160, thereby reducing the wear between the sliding member 130 and the guide rail 110, extending the service life of the guide rail assembly 100, and improving the running stability.
[0085] In some embodiments, the outlets of the plurality of secondary flow channels 140 may be arranged at intervals along the groove width direction of the groove 120, so that the gas medium outputted from the outlets of the plurality of secondary flow channels 140 exerts a relatively uniform force on the top surface of the support member 160. For example, the direction from the inlet to the outlet of the fifth secondary flow channel 145 may be vertically downward, so that the gas medium outputted from the outlet of the fifth secondary flow channel 145 faces the top surface of the support member 160.
[0086] In some embodiments, the number of any one of the first sub-channel 1411 , the second sub-channel 1422 , the third sub-channel 1433 , the fourth sub-channel 1444 , and the fifth sub-channel 145 may be 2, 3, 4, 5, or 6 or more.
[0087] Among them, the direction from the inlet to the outlet of the first main channel 151, the second main channel 152 and the fifth sub-channel 145 can be the direction of gravity, and the direction from the inlet to the outlet of the third main channel 153, the first sub-sub-channel 1411, the second sub-sub-channel 1422, the third sub-sub-channel 1433 and the fourth sub-sub-channel 1444 can be the horizontal direction.
[0088] In some embodiments, see Figure 1 and Figure 3, on the same sliding part 130, the sliding part 130 may include a first sliding part 131, a second sliding part 132 and a third sliding part 133, and the first sliding part 131 and the third sliding part may be located at both ends of the second sliding part 132 along a preset direction. The main flow channel 150 and the secondary flow channel 140 may both be located in the second sliding part 132, and the main flow channel 150 and the secondary flow channel 140 may penetrate the second sliding part 132 along a preset direction, thereby reducing the difficulty of preparing the main flow channel 150 and the secondary flow channel 140. The first sliding part 131 and the third sliding part 133 may shield the two ends of the main flow channel 150 and the secondary flow channel 140 along a preset direction to reduce the leakage of the gas medium. The first sliding part 131 may have a first air inlet 171 and a second air inlet 172, and the first air inlet 171 and the second air inlet 172 may penetrate the first sliding part 131 along a preset direction. The first air inlet 171 can be communicated with the first main channel 151, and the second air inlet 172 can be communicated with the second main channel 152. The first air inlet 171 and the second air inlet 172 are used to communicate with a gas medium source. The gas medium source provides the gas medium to the first main channel 151 through the first air inlet 171, and the gas medium source provides the gas medium to the second main channel 152 through the second air inlet 172. That is, the first air inlet 171 and the second air inlet 172 are input holes for the gas medium.
[0089] In some embodiments, see Figure 3 , on the same sliding member 130, the first sliding portion 131, the second sliding portion 132, and the third sliding portion 133 are all provided with an insertion portion 130a on one side of the groove bottom wall facing the groove 120. The first sub-flow channel 141, the second sub-flow channel 142, the third sub-flow channel 143, the fourth sub-flow channel 144, a part of the first main flow channel 151, and a part of the second main flow channel 152 can all be located on the insertion portion 130a of the second sliding portion 132. For example, the first sub-flow channel 141, the third sub-flow channel 143, and a part of the first main flow channel 151 can be located on the first sub-insertion portion 130b of the second sliding portion 132, and the first sub-flow channel 141 and the third sub-flow channel 143 are located on both sides of the first main flow channel 151. The second sub-flow channel 142 , the fourth sub-flow channel 144 and a portion of the second main flow channel 152 may be located on the second sub-interposition portion 130 c of the second sliding portion 132 , and the second sub-flow channel 142 and the fourth sub-flow channel 144 may be located on both sides of the second main flow channel 152 .
[0090] Among them, since the main channel 150, the secondary channel 140, the first air inlet hole 171 and the second air inlet hole 172 are all located on the sliding member 130 instead of the guide rail 110, the extension length of the sliding member 130 along the preset direction is much smaller than the extension length of the guide rail 110, thereby reducing the processing difficulty of the guide rail 110, the main channel 150, the secondary channel 140, the first air inlet hole 171 and the second air inlet hole 172.
[0091] In some embodiments, see Figure 1 On the same sliding member 130, the first sliding portion 131 and the second sliding portion 132 may be connected via at least one first fixing member 191, and / or the third sliding portion 133 and the second sliding portion 132 may be connected via at least one first fixing member 191. For example, the first fixing member 191 may be a bolt.
[0092] In some embodiments, on the same sliding member 130, a sealing member 194 may be provided between the first sliding portion 131 and the second sliding portion 132, so as to prevent the gas medium from leaking from the gap between the first sliding portion 131 and the second sliding portion 132, and improve the sealing performance of the first sliding portion 131 to the main channel 150 and the secondary channel 140. And / or, a sealing member 194 may be provided between the third sliding portion 133 and the second sliding portion 132, so as to prevent the gas medium from leaking from the gap between the third sliding portion 133 and the second sliding portion 132, and improve the sealing performance of the third sliding portion 133 to the main channel 150 and the secondary channel 140. For example, the sealing member 194 may be a metal sealing gasket, and the shape of the sealing member 194 may be adapted to the shape of the sliding member 130. For example, the sealing member 194 may be square. Among them, the first fixing member 191 may provide a preload force and ensure the sealing performance of the main channel 150 and the secondary channel 140.
[0093] The working process of the guide rail assembly 100 can be: Figure 1 and Figure 3After the high-pressure gas medium (i.e., working medium) is introduced into the sliding member 130 through the first air inlet hole 171 and the second air inlet hole 172, the gas medium flows through the first main channel 151 and the second main channel 152 respectively, and reaches the third main channel 153. The gas medium in the third main channel 153 flows to the multiple fifth sub-channels 145 respectively, and enters the gap between the second sliding part 132 and the top surface of the support member 160, forming the buoyancy of the supporting sliding member 130. At this time, the first sliding member floats directly above the first guide rail, and the second sliding member floats directly above the second guide rail. The first sliding member is not in direct contact with the first guide rail, and the second sliding member is not in direct contact with the second guide rail. The air film is used to indirectly transmit force to overcome the deadweight and workload, effectively reducing friction resistance and wear, and improving transmission efficiency. In addition, another part of the gas medium flows into the upper first sub-channel 1411, the upper third sub-channel 1433, the lower first sub-channel 1411, the lower third sub-channel 1433 on the left side, and the upper second sub-channel 1422, the upper fourth sub-channel 1444, the lower second sub-channel 1422, and the lower fourth sub-channel 1444 on the right side, so as to form an air film in the first gap 181, the second gap 182, the third gap 183, and the fourth gap 184, so as to provide a lateral balancing force for the sliding member 130, so as to achieve the purpose of self-centering of the sliding member 130 along the extension direction perpendicular to the guide rail 110.
[0094] It should be noted here that the numerical values and numerical ranges involved in the embodiments of the present application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.
[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A guide rail assembly, characterized in that: include: A plurality of guide rails and a plurality of sliding members, wherein the plurality of guide rails and the plurality of sliding members are arranged in one-to-one correspondence, and each of the guide rails extends along a preset direction; In the corresponding guide rail and the sliding member, the sliding member moves along the preset direction relative to the guide rail, the guide rail has a groove, the groove extends along the preset direction, the notch of the groove is located on the top surface of the guide rail, the sliding member has an insertion portion, and the insertion portion is inserted in the groove; the groove includes a first groove side wall and a second groove side wall arranged at intervals along the groove width direction of the groove, and a secondary flow channel is arranged in the insertion portion, and the secondary flow channel is used to communicate with a gas medium source, the secondary flow channel includes a first secondary flow channel and a second secondary flow channel, the outlet of the first secondary flow channel faces the first groove side wall, and the outlet of the second secondary flow channel faces the second groove side wall, and when the guide rail assembly is in a working state, the pressure of the gas medium at the outlet of the first secondary flow channel is equal to the pressure of the gas medium at the outlet of the second secondary flow channel.
2. The guide rail assembly according to claim 1, characterized in that: In the corresponding guide rail and the sliding member, a support member is arranged on the bottom wall of the groove, the support member extends along the preset direction, and along the groove width direction of the groove, the support member includes a first outer wall and a second outer wall arranged at intervals, the first outer wall faces the first groove side wall, the second outer wall faces the second groove side wall, the insertion portion includes a first sub-insertion portion and a second sub-insertion portion arranged at intervals, the first sub-insertion portion is located between the first groove side wall and the first outer wall, and the second sub-insertion portion is located between the second groove side wall and the second outer wall; The secondary flow channel further includes a third secondary flow channel and a fourth secondary flow channel, the first secondary flow channel and the third secondary flow channel are both located in the first sub-insertion portion, the second secondary flow channel and the fourth secondary flow channel are both located in the second sub-insertion portion, the outlet of the third secondary flow channel faces the first outer wall, and the outlet of the fourth secondary flow channel faces the second outer wall; When the guide rail assembly is in a working state, the pressure of the gas medium at the outlets of the third secondary flow channel and the fourth secondary flow channel is lower than the pressure of the gas medium at the outlet of the first secondary flow channel.
3. The guide rail assembly according to claim 2, characterized in that: In the same sliding member, the first secondary flow channel and the second secondary flow channel are connected to each other; The first sub-flow channel includes a plurality of first sub-flow channels, and the second sub-flow channel includes a plurality of second sub-flow channels. The plurality of first sub-flow channels and the plurality of second sub-flow channels are arranged at intervals along the groove depth direction of the groove. The plurality of first sub-flow channels and the plurality of second sub-flow channels are arranged one by one. The first sub-flow channels and the corresponding second sub-flow channels have the same horizontal height and the same opening size. The direction from the inlet to the outlet of the first sub-flow channel is the same as the direction from the first outer wall to the first groove side wall, and the direction from the inlet to the outlet of the second sub-flow channel is the same as the direction from the second outer wall to the second groove side wall.
4. The guide rail assembly according to claim 3, characterized in that: In the same sliding part, the third sub-flow channel and the fourth sub-flow channel are connected, the third sub-flow channel includes a plurality of third sub-flow channels, and the fourth sub-flow channel includes a plurality of fourth sub-flow channels, the plurality of third sub-flow channels and the plurality of fourth sub-flow channels are arranged at intervals along the groove depth direction of the groove, the plurality of third sub-flow channels and the plurality of fourth sub-flow channels are arranged one by one, the third sub-flow channels and the corresponding fourth sub-flow channels have the same horizontal height, the direction from the inlet to the outlet of the third sub-flow channel is the same as the direction from the first groove side wall to the first outer wall, and the direction from the inlet to the outlet of the fourth sub-flow channel is the same as the direction from the second groove side wall to the second outer wall.
5. The guide rail assembly according to claim 4, characterized in that: The ratio of the outlet area of the third and fourth sub-sub-flow channels to the outlet area of the first sub-sub-flow channel is in the range of 1 / 25-1 / 9.
6. The guide rail assembly according to any one of claims 2 to 5, characterized in that: On the same sliding part, there is a main channel in the sliding part, and the main channel includes a first main channel and a second main channel that are connected. The first main channel is connected to the first secondary channel and the third secondary channel, and the second main channel is connected to the second secondary channel and the fourth secondary channel. The first main channel and the second main channel are used to connect to the gas medium source.
7. The guide rail assembly according to claim 6, characterized in that: On the same sliding member, the main channel includes a third main channel, the first main channel and the second main channel are connected through the third main channel, and the secondary channel includes a plurality of fifth secondary channels, and the plurality of fifth secondary channels are all located in the sliding member between the first sub-insertion portion and the second sub-insertion portion; The outlets of the plurality of fifth secondary flow channels are all oriented toward the top surface of the support member and are spaced apart along the groove width direction of the groove.
8. The guide rail assembly according to claim 6, characterized in that: On the same sliding member, the sliding member includes a first sliding portion, a second sliding portion and a third sliding portion, and the first sliding portion and the third sliding portion are located at two ends of the second sliding portion along the preset direction; The main flow channel and the secondary flow channel are both located in the second sliding part and penetrate the second sliding part along the preset direction. The first sliding part has a first air inlet hole and a second air inlet hole. The first air inlet hole and the second air inlet hole penetrate the first sliding part along the preset direction. The first air inlet hole is connected to the first main flow channel, and the second air inlet hole is connected to the second main flow channel. The first air inlet hole and the second air inlet hole are used to connect to the gas medium source.
9. The guide rail assembly according to claim 8, characterized in that: On the same sliding member, a sealing member is provided at least one of between the first sliding portion and the second sliding portion and between the third sliding portion and the second sliding portion; And / or, the guide rail assembly includes a connecting member, the connecting member extends along the groove width direction of the groove, and the connecting member is connected to the top surface of each sliding member.
10. A transportation system, characterized in that: include: A transport device and a guide rail assembly as described in any one of claims 1 to 9, wherein at least one of a connecting member and a sliding member of the guide rail assembly is connected to the transport device.