Skid supporting device

Abstract

The utility model relates to the technical field of maglev trains, and provides a supporting skid device which comprises a main body seat, a sliding seat and a sliding seat, the buffer units are arranged on the upper end face of the main body seat at intervals in the length direction of the main body seat; the heat insulation friction units are adjacently arranged on the lower end face of the main body seat in the length direction of the main body seat, each heat insulation friction unit comprises a heat insulation plate and a friction block which are stacked, and each heat insulation plate is located between the corresponding friction block and the main body seat; wherein the heat insulation friction unit is fixed on the main body seat through a plurality of flat head screws. The skid device can solve the problems that an existing skid device is low in horizontal bearing capacity and prone to deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation trains, in particular to a supporting skid device for magnetic levitation vehicles. Background Art

[0002] The support skid is installed on the bottom of the maglev vehicle and plays an indispensable role in the safe braking, landing braking, and parking braking of the high-maglev vehicle. With the continuous development of maglev train technology, the structure of the support skid has also made great progress. However, the technical solutions currently used in maglev trains have the following problems:

[0003] (1) The main body, heat shield, and friction block are connected together by countersunk screws. The end of the countersunk screw is in direct contact with the friction block, resulting in a small contact area and low strength of the friction block. This makes it impossible to apply a large preload force to the countersunk screw, which results in a low upper limit of the horizontal load transmitted from the friction block to the main body through the countersunk screw. At the same time, when the suspension function of the magnetic levitation vehicle suspension frame fails, a lot of heat will be generated when the friction block of the supporting skid device contacts and rubs against the track surface. The direct contact between the end of the countersunk screw and the friction block will result in a large amount of heat being transferred to the countersunk screw. Excessive temperature of the countersunk screw may cause its mechanical properties to deteriorate, which may easily lead to the countersunk screw breaking or deformation.

[0004] (2) The end friction block is made of metal material, and there is no heat insulation plate between the end friction block and the main body seat. When the suspension function of the magnetic levitation vehicle suspension frame fails and the supporting slide device contacts and rubs against the track surface, the heat generated by the friction between the end friction block of the supporting slide device and the track surface will be directly transferred to the main body seat. The main body seat is made of metal, which may cause the mechanical properties of the main body seat to deteriorate due to excessive temperature. The main body seat is prone to deformation when it is subjected to a large load.

[0005] (3) There is no gap between the bent edge of the main seat and the friction block. The heat generated by the friction between the friction block of the supporting slide device and the track surface is easily transferred to the main seat, which may cause the mechanical properties of the main seat to deteriorate due to excessive temperature. The main seat is prone to deformation when it is subjected to a large load.

[0006] Therefore, the current technical solution of the support skid device for magnetic levitation vehicles needs to be further improved and perfected. Utility Model Content

[0007] The purpose of the utility model is to provide a supporting skid device to solve the problems of low horizontal bearing capacity and easy deformation of the existing skid devices.

[0008] The above technical objectives of the present invention are mainly achieved through the following technical means:

[0009] The utility model provides a supporting slide device, which includes:

[0010] Main seat;

[0011] A plurality of buffer units are arranged on the upper end surface of the main body seat at intervals along the length direction of the main body seat;

[0012] A plurality of heat-insulating friction units are arranged adjacent to the lower end surface of the main body seat along the length direction of the main body seat, the heat-insulating friction units include a heat-insulating plate and a friction block stacked together, and the heat-insulating plate is located between the friction block and the main body seat;

[0013] Wherein, the heat-insulating friction unit is fixed on the main body seat by a plurality of flat-head screws.

[0014] In a preferred embodiment of the present invention, both sides of the main seat have bending wings bent from the upper end surface toward the lower end surface, and a gap is formed between the bending wings and the friction block.

[0015] In a preferred embodiment of the present invention, the width of the gap is 0.5 mm-1 mm.

[0016] In a preferred embodiment of the present invention, the buffer unit includes at least one group of disc springs, each group of the disc springs is connected to the main body seat through a limiting column, the limiting column includes a first sleeve and a screw, the first sleeve is passed through the central axis of the disc spring, one end of the screw is clamped on the lower end surface of the main body seat, and the other end of the screw passes through the main body seat and the first sleeve and is threadedly connected with a nut.

[0017] In a preferred embodiment of the present invention, the buffer unit includes a plurality of groups of disc springs, and each group of disc springs is arranged at intervals along the width direction of the main body seat;

[0018] In a preferred embodiment of the present invention, a first washer is provided on the screw rod, and the first washer is located between the nut and the disc spring; a second washer is provided on the first sleeve, and the second washer is connected to the top of the disc spring.

[0019] In a preferred embodiment of the present invention, a dustproof ring is further provided on the upper end surface of the main body seat, and the dustproof ring is sleeved on the circumferential outer side of the buffer unit.

[0020] In a preferred embodiment of the present invention, a screw mounting hole is provided on the friction block, the head of the flat head screw is arranged in the screw mounting hole, and the shank of the flat head screw passes through the friction block, the heat insulation plate and the main seat in sequence and is threadedly connected with a nut.

[0021] In a preferred embodiment of the present invention, a washer is provided on the shank of the flat head screw, and the washer is located between the head of the flat head screw and the bottom of the screw mounting hole.

[0022] In a preferred embodiment of the present invention, a second sleeve is further provided on the shank of the flat head screw, and the second sleeve is located between the main body and the nut.

[0023] In a preferred embodiment of the present invention, each of the heat insulation plates includes two first heat insulation plates located at both ends of the main body seat, and a plurality of second heat insulation plates located between the two first heat insulation plates; each of the friction blocks includes two first friction blocks located at both ends of the main body seat, and a plurality of second friction blocks located between the two first friction blocks.

[0024] In a preferred embodiment of the present invention, each of the heat-insulating friction units is connected to the main body seat via four hexagonal flat head screws distributed in a rectangular shape.

[0025] Compared with the prior art, the technical solution described in this utility model has the following characteristics and advantages:

[0026] 1. The main seat, heat shield and friction block are connected together by flat head screws. A gasket is provided between the head of the flat head screw and the friction block. This can not only increase the contact area to reduce the compressive stress on the friction block caused by the pre-tightening force of the flat head screw, but also reduce the heat transfer speed between the friction block and the flat head screw, thereby preventing the main seat from being deformed due to high temperature.

[0027] 2. The first friction block structure is adopted at both ends of the main seat, and a first heat insulation plate is provided between the first friction block and the main seat. The first friction block, the first heat insulation plate and the main seat are connected together by four flat head screws distributed in a rectangular shape. The overall structure is firmly connected and has high impact resistance. The heat generated by the friction between the first friction block and the track surface will not be directly transferred to the main seat, thereby avoiding deformation of the main seat due to high temperature.

[0028] 3. A gap is provided between the friction block and the bent wing on the edge of the main seat to prevent the heat generated by the friction between the friction block and the track surface from being directly transferred to the main seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportional dimensions of the components in the drawings are for illustrative purposes only and are intended to facilitate understanding of the present invention. They are not intended to limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art, guided by the present invention, may select various possible shapes and proportional dimensions to implement the present invention, depending on the specific circumstances.

[0031] Figure 1 This is a schematic structural diagram of the supporting slide device of the utility model;

[0032] Figure 2 This is a partial cross-sectional structural diagram of the supporting slide device of the utility model;

[0033] Figure 3 This is a partial cross-sectional structural diagram of the supporting slide device of the utility model;

[0034] Figure 4 This is a schematic structural diagram of the first heat insulation board of the present invention;

[0035] Figure 5 This is a schematic structural diagram of the second heat insulation board of the present invention;

[0036] Figure 6 This is a schematic structural diagram of the first friction block of the present invention;

[0037] Figure 7 This is another structural schematic diagram of the first friction block of the present invention;

[0038] Figure 8 This is a schematic structural diagram of the second friction block of the present invention.

[0039] Description of reference numerals:

[0040] 10. Main body; 11. Connecting ring; 12. Bending wing; 13. Rivet;

[0041] 20. Buffer unit; 21. Disc spring; 22. First sleeve; 23. Screw; 24. Connecting block; 25. First nut; 26. First washer; 27. Second washer; 28. Dust seal;

[0042] 30. Heat-insulating friction unit; 31. Heat-insulating plate; 311. First heat-insulating plate; 312. Second heat-insulating plate; 32. Friction block; 321. First friction block; 322. Second friction block; 323. Screw mounting hole; 33. Flat head screw; 34. Second nut; 35. Gasket; 36. Second sleeve. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0044] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] like Figure 1 and Figure 2 As shown, the utility model provides a supporting slide device, which includes: a main body seat 10; a plurality of buffer units 20, which are arranged on the upper end surface of the main body seat 10 at intervals along the length direction of the main body seat 10; a plurality of heat-insulating friction units 30, which are arranged adjacent to the lower end surface of the main body seat 10 along the length direction of the main body seat 10, and the heat-insulating friction units 30 include stacked heat-insulating plates 31 and friction blocks 32, and the heat-insulating plates 31 are located between the friction blocks 32 and the main body seat 10; wherein, each heat-insulating friction unit 30 is fixed to the main body seat 10 by a plurality of flat-head screws 33.

[0047] The supporting slide device described in the present invention is connected together by a flat head screw 33 between the main seat 10, the heat insulation plate 31 and the friction block 32, which can not only increase the contact area to reduce the compressive stress generated by the pre-tightening force of the flat head screw 33 on the friction block 32, but also reduce the heat transfer speed between the friction block 32 and the flat head screw 33, thereby avoiding deformation of the main seat 10 due to high temperature.

[0048] The supporting slide device described in the present invention sets the heat insulation plate 31 between the main seat 10 and the friction block 32. The overall structure is firmly connected and has high impact resistance. Under the action of the heat insulation plate 31, the heat generated by the friction between the friction block 32 and the track surface will not be directly transferred to the main seat 10, thereby avoiding deformation of the main seat 10 due to high temperature.

[0049] The specific structure of each part of the supporting slide device of the present invention, as well as the position and connection relationship between the parts will be described in detail below.

[0050] The support sled assembly of the present invention comprises a main body 10, which serves as a structural support and connects the other components together. In this embodiment, the main body 10 is a long metal plate, with connecting rings 11 connected to each end via multiple rivets 13. Bend wings 12 are formed at the edges of the long metal plate.

[0051] A buffer unit 20 is fixed to the upper end surface of the main body base 10, and a heat-insulating friction unit 30 is fixed to the lower end surface of the main body base 10. The buffer unit 20 provides the support sled assembly with improved impact cushioning capabilities and can be implemented using conventional elastic members in the prior art, such as springs and disc springs. The heat-insulating friction unit 30 comprises a stacked heat-insulating plate 31 and friction blocks 32. The friction braking during vehicle landing is shared by the multiple friction blocks 32, which provide the support sled assembly with improved friction braking capabilities. The heat-insulating plate 31 is positioned between the friction blocks 32 and the main body base 10 to isolate the heat generated by friction braking and reduce the amount of heat transferred from the friction blocks 32 to the main body base 10.

[0052] Further, such as Figure 1 As shown, to further enhance the buffering capacity of the supporting sled assembly, multiple buffer units 20 are installed at intervals along the length of the main base 10 on its upper end surface. To further enhance the friction braking capability of the supporting sled assembly, multiple heat-insulating friction units 30 are positioned adjacent to each other along the length of the main base 10. Specifically, the friction blocks 32 provided on the lower end surface of the main base 10 are split structures. These multiple split friction blocks 32 are arranged along the length of the main base 10. Compared to a single friction block 32, the split structure can withstand more heat generated by friction braking. Furthermore, the split friction blocks 32 allow for partial replacement of damaged friction blocks 32, which is economical.

[0053] Furthermore, the friction block 32 is made of a material that is resistant to high temperature, wear, impact and has good mechanical properties, such as carbon-ceramic (C / C-SiC) composite materials, wear-resistant powder metallurgy materials, etc.; the heat insulation plate 31 can be made of a non-metallic material with low thermal conductivity.

[0054] The structure and technical effects of the preferred embodiment of the supporting slide device of the present invention will be further described below.

[0055] According to one embodiment of the present invention, Figure 1 As shown, the bent wings 12 on both sides of the main base 10 are bent from the upper end surface to the lower end surface, and a gap is formed between the bent wings 12 and the friction block 32. The setting of the gap can prevent the heat generated by the friction between the friction block 32 and the track surface from being directly transferred to the main base 10.

[0056] Furthermore, the width of the gap reserved between the bending wing 12 and the friction block 32 is 0.5 mm to 1 mm.

[0057] According to one embodiment of the present invention, the buffer unit 20 includes at least one group of disc springs 21, and multiple groups of disc springs 21 are arranged at intervals along the width direction of the main base 10; each group of disc springs 21 is connected to the main base 10 through a limiting column, and the limiting column includes a first sleeve 22 and a screw 23. The first sleeve 22 is passed through the central axis of the disc spring 21, and one end of the screw 23 is clamped on the lower end surface of the main base 10. The other end of the screw 23 passes through the main base 10 and the first sleeve 22 and is threadedly connected to the first nut 25.

[0058] Specifically, such as Figure 2 and Figure 3 As shown, each set of disc springs 21 is composed of a plurality of stacked spring sheets, each of which has a through-hole at the center thereof, for fixing the disc springs 21 to the upper end face of the main body 10. A screw hole is provided on the main body 10, and a connecting block 24 is provided at a position on the lower end face of the main body 10 corresponding to the screw hole. The connecting block 24 also has a through-hole corresponding to the screw hole. One end of the screw 23 passes through the through-hole and the screw hole, with its head resting on the connecting block 24. The end of the screw 23 passes through the connecting block 24 and the main body 10 and extends to one side of the upper end face of the main body 10. The first sleeve 22 is sleeved on the screw 23, and the disc spring 21 is sleeved on the first sleeve 22. The end of the screw 23 is threadedly connected with a first nut 25. Grooves are formed between two adjacent heat-insulating friction units 30 . After the heat-insulating friction units 30 are fixed to the main body 10 by flat-head screws 33 , the connecting blocks 24 are located in the grooves.

[0059] Further, such as Figure 2 and Figure 3 As shown, a first washer 26 is provided on the screw rod 23 and is located between the first nut 25 and the disc spring 21. A second washer 27 is provided on the first sleeve 22 and is connected to the top of the disc spring 21. The first washer 26 is used to limit the disc spring 21, and the second washer 27 is connected to the spring leaf at the top of the disc spring 21, so that the top of the disc spring 21 is a flat surface.

[0060] According to one embodiment of the present invention, Figure 1 and Figure 2 As shown, a dust ring 28 is also provided on the upper end surface of the main body 10. The dust ring 28 is mounted on the circumferential outer side of the buffer unit 20. The dust ring 28 is mounted radially around the disc spring 21 to prevent external dust from entering and affecting the operation of the disc spring 21. The dust ring 28 can be made of an elastic material, such as rubber.

[0061] According to one embodiment of the present invention, Figure 2 and Figure 3 As shown, a screw mounting hole 323 is provided on the friction block 32, and the head of the flat head screw 33 is arranged in the screw mounting hole 323. The nail rod of the flat head screw 33 passes through the friction block 32, the heat insulation plate 31 and the main seat 10 in sequence and is threadedly connected to the second nut 34.

[0062] Further, such as Figure 3 As shown, a washer 35 is provided on the shank of the grub screw 33. The washer 35 is located between the head of the grub screw 33 and the bottom of the screw mounting hole 323. The provision of the washer 35 not only increases the contact area to reduce the compressive stress exerted on the friction block 32 by the pre-tightening force of the grub screw 33, but also reduces the heat transfer rate between the friction block 32 and the grub screw 33.

[0063] Further, such as Figure 3 As shown, a second sleeve 36 is also provided on the shank of the flat head screw 33 , and the second sleeve 36 is located between the main body 10 and the second nut 34 .

[0064] According to one embodiment of the present invention, Figure 2 、 Figures 4 to 8 As shown, each heat insulation plate 31 includes two first heat insulation plates 311 located at both ends of the main body seat 10, and multiple second heat insulation plates 312 located between the two first heat insulation plates 311; each friction block 32 includes two first friction blocks 321 located at both ends of the main body seat 10, and multiple second friction blocks 322 located between the two first friction blocks 321.

[0065] Specifically, the shapes of the two first heat insulation plates 311 and the two first friction blocks 321 match the shapes of the two ends of the main body seat 10; the multiple second heat insulation plates 312 and the multiple second friction blocks 322 are all rectangular in shape.

[0066] Further, such as Figure 1 、 Figures 4 to 8As shown, each heat-insulating friction unit 30 is connected to the main base 10 via four hexagon socket flat head screws 33 arranged in a rectangular pattern. Specifically, a first heat-insulating plate 311 and a first friction block 321, which are positioned opposite and stacked one above the other, are connected to the main base 10 via four hexagon socket flat head screws 33; a second heat-insulating plate 312 and a second friction block 322, which are positioned opposite and stacked one above the other, are also connected to the main base 10 via four hexagon socket flat head screws 33.

[0067] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A supporting slide device, characterized in that: include: Main body seat (10); A plurality of buffer units (20) are arranged on the upper end surface of the main body seat (10) at intervals along the length direction of the main body seat (10); A plurality of heat-insulating friction units (30) are arranged adjacent to the lower end surface of the main body seat (10) along the length direction of the main body seat (10), the heat-insulating friction units (30) comprising a heat-insulating plate (31) and a friction block (32) stacked on each other, the heat-insulating plate (31) being located between the friction block (32) and the main body seat (10); Wherein, each of the heat-insulating friction units (30) is fixed on the main body seat (10) via a plurality of flat-head screws (33).

2. The support slide device according to claim 1, characterized in that: Both sides of the main body seat (10) are provided with bending wings (12) bent from the upper end surface toward the lower end surface, and a gap is formed between the bending wings (12) and the friction block (32).

3. The support slide device according to claim 2, characterized in that: The width of the gap is 0.5 mm to 1 mm.

4. The support slide device according to claim 1, characterized in that: The buffer unit (20) includes at least one group of disc springs (21), each group of the disc springs (21) is connected to the main body (10) through a limiting column, and the limiting column includes a first sleeve (22) and a screw (23), the first sleeve (22) is passed through the central axis of the disc spring (21), one end of the screw (23) is clamped on the lower end surface of the main body (10), and the other end of the screw (23) passes through the main body (10) and the first sleeve (22) and is threadedly connected to a nut.

5. The support slide device according to claim 4, characterized in that: The buffer unit (20) includes a plurality of groups of disc springs (21), and each group of disc springs (21) is arranged at intervals along the width direction of the main body seat (10).

6. The support slide device according to claim 4, characterized in that: A first washer (26) is provided on the screw rod (23), and the first washer (26) is located between the nut and the disc spring (21); a second washer (27) is provided on the first sleeve (22), and the second washer (27) is connected to the top of the disc spring (21).

7. The support skid device according to any one of claims 1, 4 or 6, characterized in that: A dustproof ring (28) is also provided on the upper end surface of the main body seat (10), and the dustproof ring (28) is sleeved on the circumferential outer side of the buffer unit (20).

8. The support slide device according to claim 1, characterized in that: A screw mounting hole (323) is provided on the friction block (32), the head of the flat head screw (33) is arranged in the screw mounting hole (323), and the shank of the flat head screw (33) passes through the friction block (32), the heat insulation plate (31) and the main body seat (10) in sequence and is then threadedly connected with a nut.

9. The support slide device according to claim 8, characterized in that: A washer (35) is provided on the shank of the flat head screw (33), and the washer (35) is located between the head of the flat head screw (33) and the bottom of the screw mounting hole (323).

10. The support slide device according to claim 8, characterized in that: A second sleeve (36) is also provided on the shank of the flat head screw (33), and the second sleeve (36) is located between the main body seat (10) and the nut.

11. The support slide device according to claim 1, characterized in that: Each of the heat insulation plates (31) includes two first heat insulation plates (311) located at both ends of the main body seat (10), and a plurality of second heat insulation plates (312) located between the two first heat insulation plates (311); each of the friction blocks (32) includes two first friction blocks (321) located at both ends of the main body seat (10), and a plurality of second friction blocks (322) located between the two first friction blocks (321).

12. The support skid device according to claim 1 or 11, characterized in that: Each of the heat-insulating friction units (30) is connected to the main body seat (10) via four hexagonal flat head screws (33) distributed in a rectangular shape.

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