Guide wheel installation structure

Abstract

The present invention provides a guide wheel installation structure, including an eccentric shaft, a guide wheel, and a guide wheel seat suitable for being arranged on a bogie of a suspended vehicle, wherein the eccentric shaft includes a first shaft body and a second shaft body which are integrally formed and have axes parallel to each other, the first shaft body is rotatably connected to the guide wheel, the second shaft body is plug-fitted with the guide wheel seat, and the second shaft body and the guide wheel seat are suitable for relative movement in the axial direction of the guide wheel seat. The present invention installs the guide wheel on the guide wheel seat by setting an eccentric shaft, so that the lateral wheelbase of the guide wheel is suitable for adjustment, so as to compensate for the wear of the guide wheel, and the eccentric shaft and the guide wheel seat are independently set, with a simple structure and good interchangeability, which improves the convenience of the later maintenance of the guide wheel installation structure; moreover, the second shaft body and the guide wheel seat are suitable for relative movement in the axial direction of the guide wheel seat, which reduces the influence of the change of the suspension air gap on the guide wheel, thereby extending the scrap cycle of the guide wheel and reducing the replacement frequency of the guide wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical devices, and in particular to a guide wheel mounting structure. Background Art

[0002] At present, for suspended vehicles such as magnetic suspension vehicles, the guide wheels are prone to shaking up and down due to the change of the suspension air gap during driving, which makes the guide wheels easy to wear and shortens the scrap cycle of the guide wheels. In order to deal with the wear of the guide wheels, suspended vehicles generally use a telescopic structure to adjust the lateral wheelbase of the guide wheels, but the telescopic structure is complex, the production cost is high, and it is not conducive to the later maintenance of the bogie. Summary of the invention

[0003] The problem solved by the present invention is: how to provide a guide wheel installation structure to reduce the influence of the change of the suspension air gap on the guide wheel and simplify the structure for adjusting the lateral wheel track of the guide wheel.

[0004] In order to solve the above problems, the present invention provides a guide wheel mounting structure, including an eccentric shaft, a guide wheel and a guide wheel seat suitable for being arranged on a bogie of a suspended vehicle, the eccentric shaft includes a first shaft body and a second shaft body which are integrally formed and have axes parallel to each other, the first shaft body is rotatably connected to the guide wheel, the second shaft body is plug-fitted to the guide wheel seat, and the second shaft body and the guide wheel seat are suitable for relative movement in the axial direction of the guide wheel seat.

[0005] Optionally, the guide wheel mounting structure also includes a second limiting structure, and the end of the second shaft away from the first shaft passes through the guide wheel seat and extends out; the second limiting structure is suitable for being arranged at the end of the second shaft away from the first shaft, and is suitable for limiting the relative displacement of the eccentric shaft and the guide wheel seat.

[0006] Optionally, the second shaft body includes a second shaft body and a key structure protruding from the second shaft body, and a key slot matching the key structure is provided on the inner side wall of the guide wheel seat, and the key structure is plugged into the key slot; and the extension directions of the key structure and the key slot are parallel to the axial direction of the key slot, and the key structure is suitable for moving in the key slot along the extension direction of the key slot.

[0007] Optionally, the guide wheel mounting structure also includes an elastic reset structure, and a ring-shaped protrusion structure is protruded on the inner wall of the end of the guide wheel seat away from the first shaft body; the elastic reset structure is suitable for being arranged in the guide wheel seat and between the key structure and the protrusion structure, and the elastic reset structure is suitable for limiting the relative displacement of the key structure and the protrusion structure.

[0008] Optionally, the elastic reset structure is a spring, and the spring is suitable for being sleeved on the second shaft body.

[0009] Optionally, the guide wheel mounting structure further includes a bearing, and the bearing is suitable for being arranged between the first shaft body and the guide wheel, and the first shaft body and the guide wheel are rotatably connected via the bearing.

[0010] Optionally, the guide wheel mounting structure also includes a first limiting structure, which includes a first locking nut; the first shaft body includes a first shaft body and a first limiting portion, the first limiting portion is protruding on the side wall at one end where the first shaft body is connected to the second shaft body, and the first locking nut is threadedly connected to the first shaft body at one end of the first shaft body away from the second shaft body; the guide wheel and the bearing are suitable for being arranged between the first locking nut and the first limiting portion.

[0011] Optionally, the guide wheel mounting structure also includes a sealing assembly, which includes a first sealing structure suitable for being arranged between the first locking nut and the guide wheel and a second sealing structure suitable for being arranged between the first limiting portion and the guide wheel; one end of the guide wheel facing the first locking nut is sealedly connected to the first shaft body through the first sealing structure; one end of the guide wheel facing the first limiting portion is sealedly connected to the first shaft body through the second sealing structure.

[0012] Optionally, the guide wheel mounting structure also includes an end cover suitable for being arranged between the guide wheel seat and the second limiting structure, the end cover includes an end cover body and a first plug-in portion protruding from the end cover body, the first plug-in portion is suitable for plugging and cooperating with the guide wheel seat, and the end cover body is suitable for being connected to the guide wheel seat via fasteners.

[0013] Optionally, the second limiting structure includes a limiting plate and a second locking nut, and a second annular groove is provided at one end of the second shaft body away from the first shaft body, and the limiting plate is locked on the second shaft body at the second groove through the second locking nut.

[0014] Compared with the prior art, the present invention has the following beneficial effects: by arranging an eccentric shaft to mount the guide wheel on the guide wheel seat, it is convenient to adjust the lateral track of the guide wheel, and it is also convenient to adjust the distance from the axis of the guide wheel to the inner wall of the box-type track. On the one hand, compared with the prior art in which the lateral track of the guide wheel is adjusted by arranging a complex telescopic structure, the eccentric shaft has a simple structure and low production cost, and the eccentric shaft and the guide wheel seat are independently arranged with good interchangeability (the eccentric shaft and other components are easy to replace), which improves the convenience of later maintenance of the guide wheel installation structure, simplifies the structure of the bogie, reduces the production cost of the bogie, and improves the convenience of later maintenance of the bogie, and makes the bogie with the guide wheel installation structure suitable for Box-type tracks of different specifications; on the other hand, it is convenient to adjust the pressure of the guide wheel on the inner wall of the box-type track to adjust the size of the rolling friction of the guide wheel on the inner wall of the box-type track, thereby ensuring that the guide wheel can provide a stable guiding function while avoiding the guide wheel from hindering the running of the bogie on the box-type track; on the other hand, it is convenient to compensate for the wear of the guide wheel, extend the scrap cycle of the guide wheel, and reduce the replacement frequency of the guide wheel. That is to say, after the guide wheel is worn, by increasing the lateral wheelbase of the guide wheel to shorten the distance from the axis of the guide wheel to the inner wall of the box-type track, the guide wheel can be guaranteed to be in stable contact with the inner wall of the box-type track, thereby ensuring that the worn guide wheel can still provide a stable guiding function for the running of the bogie in the box-type track. Moreover, the second shaft and the guide wheel seat are suitable for relative movement in the axial direction of the guide wheel seat, so that the eccentric shaft and the guide wheel are suitable for moving up and down relative to the guide wheel seat (or bogie). In this way, when the bogie (guide wheel seat) of the magnetic levitation suspension vehicle shakes up and down due to changes in the suspension air gap, the height of the guide wheel relative to the ground remains unchanged or changes slightly, thereby avoiding the situation where the guide wheel is easily worn due to frequent up and down movement of the guide wheel seat. The guide wheel is suitable for coping with changes in the suspension air gap caused by changes in the load of the magnetic levitation suspension vehicle itself or changes in the slope of the box track, thereby reducing the wear of the guide wheel, extending the scrap cycle of the guide wheel, and reducing the replacement frequency of the guide wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of the guide wheel installation structure in an embodiment of the present invention;

[0016] Figure 2 A cross-sectional view of the guide wheel installation structure in another embodiment of the present invention;

[0017] Figure 3 It is a structural schematic diagram of an eccentric shaft in an embodiment of the present invention;

[0018] Figure 4 is a cross-sectional view of an eccentric shaft in an embodiment of the present invention;

[0019] Figure 5 It is a cross-sectional view of the guide wheel seat in the embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-eccentric shaft, 11-first shaft body, 111-first shaft body, 112-first limiting portion, 1121-fourth plug-in portion, 1122-fourth slot, 113-first groove, 114-oil channel, 115-oil cup, 12-second shaft body, 121-second shaft body, 122-key structure, 123-second groove; 2-guide wheel; 3-guide wheel seat, 31-key groove, 32-protruding structure, 33-mounting seat, 34-first slot; 4-second limiting structure, 41-limiting plate, 42-second locking nut; 5-spring; 6-bearing, 61-rolling element; 7-first limiting structure, 71-first locking nut, 72-gasket, 73-locking ring; 8-sealing assembly, 81-first sealing structure, 811-first oil retaining ring, 8111-third plug-in part, 8112-third slot, 812-first labyrinth ring, 8121-second plug-in part, 8122-second slot, 82-second sealing structure, 821-second oil retaining ring, 8211-fifth plug-in part, 8212-fifth slot; 9-end cover, 91-end cover body, 92-first plug-in part. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] It should be noted that, in the coordinate axis Z axis provided herein, the positive direction of the Z axis represents the upper side, and the reverse direction of the Z axis represents the lower side. At the same time, it should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0024] Combination Figure 1-Figure 5 As shown, an embodiment of the present invention provides a guide wheel mounting structure, including an eccentric shaft 1, a guide wheel 2 and a guide wheel seat 3 suitable for being arranged on a bogie of a suspended vehicle, the eccentric shaft 1 includes a first shaft body 11 and a second shaft body 12 which are integrally formed and have axes parallel to each other, the first shaft body 11 is rotatably connected to the guide wheel 2, the second shaft body 12 is plug-fitted with the guide wheel seat 3, and the second shaft body 12 and the guide wheel seat 3 are suitable for relative movement in the axial direction of the guide wheel seat 3.

[0025] In this embodiment, the guide wheel mounting structure is suitable for machinery with guidance requirements, such as the bogie of a magnetic levitation suspension vehicle. For example, when the guide wheel mounting structure is arranged on the bogie of the magnetic levitation suspension vehicle, the guide wheel mounting structure is used to provide guidance for the bogie to travel in the box-type track of the magnetic levitation suspension vehicle and to enhance the stability of the guide wheel 2 when it is installed on the bogie, so that the guide wheel mounting structure can provide a stable and reliable guidance for the bogie to travel in the box-type track, thereby ensuring the stability and reliability of the driving of the magnetic levitation suspension vehicle. Specifically, the guide wheel mounting structure is arranged on the bogie of the suspension vehicle through the guide wheel seat 3 to ensure the stability of the connection between the guide wheel mounting structure and the bogie. The eccentric shaft 1 includes an integrally formed first shaft body 11 and a second shaft body 12, and the guide wheel seat 3 is provided with a vertical (i.e., along the guide wheel seat 3). Figure 1The eccentric shaft 1 is vertically inserted into the guide groove of the guide wheel seat 3 through the second shaft body 12; the guide wheel 2 of the guide wheel mounting structure is installed on the first shaft body 11 of the eccentric shaft 1 to provide guidance for the running of the bogie in the box-type track and avoid direct contact between the bogie and the inner wall of the box-type track. And the axis of the first shaft body 11 and the axis of the second shaft body 12 are parallel to each other, that is, the vertical distance (eccentricity of the eccentric shaft 1) S between the axis of the first shaft body 11 and the axis of the second shaft body 12 is greater than 0, so that the lateral distance (that is, the direction perpendicular to the length direction of the box-type track and parallel to the horizontal plane) from the first shaft body 11 to the bogie can be adjusted by adjusting the relative position of the eccentric shaft 1 and the guide wheel seat 3 (that is, adjusting the relative position of the first shaft body 11 and the guide wheel seat 3 by rotating the eccentric shaft 1 around the axis of the second shaft body 12), thereby adjusting the lateral track of the guide wheel 2 (that is, adjusting the spacing between the two groups of guide wheels 2 arranged along the transverse direction of the bogie), and also adjusting the distance from the axis of the guide wheel 2 to the inner side wall of the box-type track. On the one hand, the spacing between the two groups of guide wheels 2 arranged at the lateral ends of the bogie (preferably, a group of guide wheel mounting structures are provided at both lateral ends of the bogie) It is suitable for adjustment, so that the bogie with the guide wheel installation structure is suitable for box-type rails of different specifications; on the other hand, it is convenient to adjust the pressure of the guide wheel 2 on the inner wall of the box-type rail to adjust the rolling friction of the guide wheel 2 on the inner wall of the box-type rail, so as to ensure that the guide wheel 2 provides a stable guiding function while avoiding the guide wheel 2 from hindering the bogie from running on the box-type rail; on the other hand, it is convenient to compensate for the wear of the guide wheel 2, extend the scrap cycle of the guide wheel 2, and reduce the replacement frequency of the guide wheel 2. That is to say, after the guide wheel 2 is worn, by increasing the lateral wheelbase of the guide wheel 2 to reduce the distance from the axis of the guide wheel 2 to the inner wall of the box-type rail, the guide wheel 2 can be ensured to be in stable contact with the inner wall of the box-type rail, so as to ensure that the worn guide wheel 2 can still provide a stable guiding function for the bogie running in the box-type rail. In addition, the first shaft body 11 is rotatably connected with the guide wheel 2 to ensure that the guide wheel 2 rolls smoothly on the inner wall of the box-type rail. The second shaft 12 is plugged into the guide wheel seat 3, and the guide wheel seat 3 is suitable for limiting the rotation of the eccentric shaft 1 (described later) to ensure that the lateral distance from the axis of the guide wheel 2 to the bogie remains constant, thereby ensuring the stability of the bogie in the box-type track. In addition, the second shaft 12 and the guide wheel seat 3 are suitable for relative movement in the axial direction of the guide wheel seat 3, that is, the second shaft 12 and the guide wheel seat 3 are suitable for relative movement in the vertical direction (that is, Figure 1That is to say, the eccentric shaft 1 and the guide wheel 2 are suitable for moving up and down relative to the guide wheel seat 3 (or bogie). In this way, when the bogie (guide wheel seat 3) of the magnetic levitation suspension vehicle shakes up and down due to the change of the suspension air gap, the height of the guide wheel 2 relative to the ground remains unchanged or changes slightly, thereby avoiding the guide wheel 2 being easily worn due to frequent up and down movement of the guide wheel seat 3. The guide wheel 2 is suitable for coping with the change of the suspension air gap caused by the change of the load of the magnetic levitation suspension vehicle itself or the change of the slope of the box track, thereby reducing the wear of the guide wheel 2, extending the scrap cycle of the guide wheel 2, and reducing the replacement frequency of the guide wheel 2.

[0026] In this way, the guide wheel mounting structure is provided with an eccentric shaft 1 to mount the guide wheel 2 on the guide wheel seat 3, thereby facilitating the adjustment of the lateral track of the guide wheel 2, and also facilitating the adjustment of the distance from the axis of the guide wheel 2 to the inner wall of the box-type track. On the one hand, compared with the prior art in which the lateral track of the guide wheel is adjusted by providing a complex telescopic structure, the eccentric shaft 1 has a simple structure and a low manufacturing cost, and the eccentric shaft 1 and the guide wheel seat 3 are independently provided with good interchangeability (the eccentric shaft 1 and other components are easy to replace), which improves the convenience of the later maintenance of the guide wheel mounting structure, simplifies the structure of the bogie, reduces the manufacturing cost of the bogie, improves the convenience of the later maintenance of the bogie, and makes the bogie with the guide wheel mounting structure suitable for Box-type tracks of different specifications; on the other hand, it is convenient to adjust the pressure of the guide wheel 2 on the inner wall of the box-type track to adjust the rolling friction of the guide wheel 2 on the inner wall of the box-type track, thereby ensuring that the guide wheel 2 provides a stable guiding function while avoiding the guide wheel 2 from hindering the running of the bogie on the box-type track; on the other hand, it is convenient to compensate for the wear of the guide wheel 2, extend the scrap cycle of the guide wheel 2, and reduce the replacement frequency of the guide wheel 2. That is to say, after the guide wheel 2 is worn, the distance from the axis of the guide wheel 2 to the inner wall of the box-type track can be reduced to ensure the stable contact between the guide wheel 2 and the inner wall of the box-type track, thereby ensuring that the worn guide wheel 2 can still provide a stable guiding function for the running of the bogie in the box-type track. Moreover, the second shaft 12 and the guide wheel seat 3 are suitable for relative movement in the axial direction of the guide wheel seat 3, so that the eccentric shaft 1 and the guide wheel 2 are suitable for moving up and down relative to the guide wheel seat 3 (or bogie). In this way, when the bogie (guide wheel seat 3) of the magnetic levitation suspension vehicle shakes up and down due to changes in the suspension air gap, the height of the guide wheel 2 relative to the ground remains unchanged or changes slightly, thereby avoiding the situation where the guide wheel 2 is easily worn due to frequent up and down movement of the guide wheel seat 3, and making the guide wheel 2 suitable for coping with changes in the suspension air gap caused by changes in the load of the magnetic levitation suspension vehicle itself or changes in the slope of the box track, thereby reducing the wear of the guide wheel 2, extending the scrap cycle of the guide wheel 2, and reducing the replacement frequency of the guide wheel 2.

[0027] Optionally, the guide wheel 2 may be arranged above the guide wheel seat 3 or below the guide wheel seat 3 .

[0028] Optionally, combined Figure 1 , Figure 2 As shown, the guide wheel mounting structure also includes a second limiting structure 4, and the end of the second shaft 12 away from the first shaft 11 passes through the guide wheel seat 3 and extends out; the second limiting structure 4 is suitable for being arranged at the end of the second shaft 12 away from the first shaft 11, and is suitable for limiting the relative displacement of the eccentric shaft 1 and the guide wheel seat 3.

[0029] In this embodiment, the guide wheel 2 is arranged above the guide wheel seat 3, and the lower end of the second shaft body 12 (that is, the second shaft body 12 is located at Figure 2 The end opposite to the Z axis) downward (i.e. Figure 2 The second limiting structure 4 of the guide wheel mounting structure is arranged at the lower end of the second shaft body 12 and is located below the guide wheel seat 3, and is used to limit the relative displacement of the second shaft body 12 and the guide wheel seat 3, thereby limiting the relative displacement of the eccentric shaft 1 and the guide wheel seat 3, that is, limiting the distance between the guide wheel seat 3 and the second limiting structure 4 within a certain range, so that the eccentric shaft 1 can reciprocate along the axis of the guide wheel seat 3 through the second shaft body 12, while preventing the eccentric shaft 1 from detaching from the guide wheel seat 3, thereby ensuring the stable connection between the eccentric shaft 1 and the guide wheel seat 3.

[0030] Optionally, combined Figure 1-Figure 5 As shown, the second shaft body 12 includes a second shaft body 121 and a key structure 122. The second shaft body 12 includes the second shaft body 121 and the key structure 122 protruding from the second shaft body 121. A key groove 31 matching the key structure 122 is provided on the inner side wall of the guide wheel seat 3. The key structure 122 is plugged into the key groove 31. The extension directions of the key structure 122 and the key groove 31 are parallel to the axial direction of the key groove 31. The key structure 122 is suitable for moving in the key groove 31 along the extension direction of the key groove 31.

[0031] In the present embodiment, the guide wheel seat 3 is a cylindrical structure with openings at the top and bottom, and a key structure 122 is protruding from the side wall of the part of the second shaft body 121 of the second shaft body 12 that passes through the guide wheel seat 3 (the second shaft body 22 is preferably protruding on the side wall of the second shaft body 121 along the radial direction of the second shaft body 121), and a key groove 31 suitable for plugging and cooperating with the key structure 122 is provided on the inner side wall of the guide wheel seat 3 (that is, the groove wall of the guide groove of the guide wheel seat 3). The extension directions of the key structure 122 and the key slot 31 are parallel to the axial direction of the key slot 31, that is, the extension directions of the key structure 122 and the key slot 31 are parallel to the vertical direction. In this way, on the one hand, it is convenient to insert the eccentric shaft 1 into the guide wheel seat 3 along the vertical direction to complete the installation of the eccentric shaft 1 on the guide wheel seat 3, and make the second shaft body 12 (eccentric shaft 1) suitable for moving up and down relative to the guide wheel seat 3, so that the guide wheel 2 is suitable for moving up and down relative to the bogie; on the other hand, the key structure 122 and the key slot 31 are parallel to the axial direction of the second shaft body 121. On the one hand, the key structure 122 and the key slot 31 have a certain length in the linear direction, which increases the contact area between the key structure 122 and the key slot 31 wall, and improves the stability of the plug-in cooperation between the key structure 122 and the key slot 31; on the other hand, the key structure 122 and the key slot 31 are mutually limited to limit the relative rotation of the guide wheel seat 3 and the second shaft body 12 around the axis of the second shaft body 12, ensuring that the lateral distance from the axis of the guide wheel 2 to the bogie is stable, thereby ensuring the stability of the bogie running in the box-type track; on the other hand, the key slot 31 wall plays a role in the second shaft body 12 in the horizontal plane (i.e., perpendicular to Figure 1 The limiting effect on the plane of the Z axis in the middle) is to prevent the eccentric shaft 1 from moving in the horizontal direction (i.e., parallel to the horizontal plane, and perpendicular to the Figure 1 The eccentric shaft 1 and the guide wheel seat 3 are shaken in the direction of the center Z axis to improve the stability of the connection between the eccentric shaft 1 and the guide wheel seat 3.

[0032] In some embodiments, the key structure 122 is preferably a spline structure, that is, an external spline is provided on the second shaft body 121, and an internal spline is provided on the inner wall of the guide wheel seat 3. The internal spline on the inner wall of the guide wheel seat 3 constitutes a key groove 31 to be plugged into and matched with the external spline on the second shaft body 121 to form a spline connection.

[0033] Optionally, combined Figure 1-Figure 5 As shown, the guide wheel mounting structure also includes an elastic reset structure, and an annular protrusion structure 32 is protruded on the inner wall of the guide wheel seat 3 at one end away from the first shaft body 11; the elastic reset structure is suitable for being arranged in the guide wheel seat 3 and between the key structure 122 and the protrusion structure 32, and the elastic reset structure is suitable for limiting the relative displacement of the key structure 122 and the protrusion structure 32.

[0034] Based on the fact that the guide wheel 2 is arranged above the guide wheel seat 3, in this embodiment, the elastic reset structure is arranged in the guide wheel seat 3 and is located between the guide wheel seat 3 and the second shaft body 121, and is used to connect or abut the guide wheel seat 3 and the second shaft body 121, and the elastic reset structure is elastic, so as to attenuate the vibration and impact of the guide wheel seat 3 and the eccentric shaft 1 during the relative movement, reduce the wear of the guide wheel seat 3 and the eccentric shaft 1, and improve the service life of the guide wheel installation structure. Moreover, the eccentric shaft 1 limits the relative displacement of the key structure 122 and the protrusion structure 32 through the elastic reset structure, so as to ensure that the second shaft body 12 and the guide wheel seat 3 are suitable for relative movement in the axial direction of the guide wheel seat 3, while avoiding excessive upward or downward movement of the second shaft body 12 relative to the guide wheel seat 3. Moreover, the lower end of the guide wheel seat 3 (that is, the guide wheel seat 3 is located at Figure 5 The inner side wall of the second shaft body 121 (the end opposite to the middle Z axis) is provided with a ring-shaped protrusion structure 32, and the lower end of the second shaft body 121 (that is, the second shaft body 121 is located at Figure 4 The end in the opposite direction of the middle Z axis) passes through the area surrounded by the protruding structure 32 (i.e., the inner circle of the protruding structure 32) and extends downward through the guide wheel seat 3. In the vertical direction, the elastic reset structure is located between the key structure 122 and the protruding structure 32. On the one hand, the elastic reset structure is prevented from affecting the plug-in fit between the key structure 122 and the key slot 31; on the other hand, the lower end of the key structure 122 (i.e., the key structure 122 is located at Figure 4 The end in the opposite direction of the middle Z axis) and the upper end of the protruding structure 32 (that is, the protruding structure 32 is located at Figure 5 The end in the positive direction of the middle Z axis) plays a limiting role on the elastic reset structure to prevent the elastic reset structure from escaping upward or downward from the guide wheel seat 3.

[0035] Optionally, combined Figure 1-Figure 5 As shown, the elastic reset structure is a spring 5 , and the spring 5 is suitable for being sleeved on the second shaft body 121 .

[0036] In this embodiment, the elastic reset structure is a spring 5, which is suitable for being sleeved on the second shaft body 121 to ensure the stability of the connection between the spring 5 and the second shaft body 121. The spring 5 is located between the key structure 122 and the protruding structure 32, and the key structure 122 and the protruding structure 32 limit the spring 5 in the vertical direction to prevent the spring 5 from slipping out of the guide wheel seat 3 upward or downward. Moreover, the upper and lower ends of the spring 5 can be respectively connected to the second shaft body 121 and the guide wheel seat 3, or the upper and lower ends of the spring 5 can be respectively abutted against the lower end of the guide wheel seat 3 and the upper end of the protruding structure 32.

[0037] Optionally, combined Figure 1 , Figure 2 As shown, the guide wheel installation structure also includes a bearing 6 , which is suitable for being arranged between the first shaft body 11 and the guide wheel 2 , and the first shaft body 11 and the guide wheel 2 are rotatably connected via the bearing 6 .

[0038] In this embodiment, the bearing 6 of the guide wheel mounting structure is arranged between the first shaft 11 and the guide wheel 2, so as to realize the rotational connection between the guide wheel 2 and the first shaft 11, and to improve the smoothness and stability of the rotational connection between the guide wheel 2 and the first shaft 11.

[0039] Optionally, combined Figure 1-Figure 4 As shown, the first shaft body 11 is provided with an oil passage 114 at the axial center position for lubricating the bearing 6. Specifically, the oil inlet of the oil passage 114 is provided at the upper end of the first shaft body 11, and the oil outlet of the oil passage 114 is provided at the bearing 6; the lubricating oil is injected into the bearing 6 through the oil passage 114 to lubricate the rolling element 61 (such as cylindrical rollers, tapered rollers, etc.) of the bearing 6. An oil cup 115 is provided at the oil inlet of the oil passage 114 to facilitate adding lubricating oil to the oil passage 114.

[0040] Optionally, combined Figure 1 , Figure 2 As shown, the guide wheel mounting structure also includes a first limiting structure 7, which includes a first locking nut 71; the first shaft body 11 includes a first shaft body 111 and a first limiting portion 112, the first limiting portion 112 is protruding on the side wall at one end where the first shaft body 111 is connected to the second shaft body 12, and the first locking nut 71 is threadedly connected to the first shaft body 111 at one end of the first shaft body 111 away from the second shaft body 12; the guide wheel 2 and the bearing 6 are suitable for being arranged between the first locking nut 71 and the first limiting portion 112.

[0041] In this embodiment, a first limiting portion 112 is convexly provided on the side wall at one end where the first shaft body 111 is connected to the second shaft body 12, and the first locking nut 71 of the first limiting structure 7 is suitable for being threadedly connected to the first shaft body 111 at the upper end of the first shaft body 111. The guide wheel 2 and the bearing 6 are suitable for being arranged between the first locking nut 71 and the first limiting portion 112, that is, the first locking nut 71 and the first limiting portion 112 are suitable for limiting the guide wheel 2 and the bearing 6 to prevent the guide wheel 2 and the bearing 6 from moving up and down on the first shaft body 111, thereby ensuring the stability of the rotational connection between the guide wheel 2 and the first shaft body 111 through the bearing 6.

[0042] Optionally, a first annular groove 113 is provided at the upper end of the first shaft body 111 , and the first locking nut 71 is threadedly connected to the first shaft body 111 at the first groove 113 .

[0043] Optionally, combined Figure 1-Figure 4As shown, the guide wheel mounting structure also includes a sealing assembly 8, which includes a first sealing structure 81 suitable for being arranged between the first locking nut 71 and the guide wheel 2, and a second sealing structure 82 suitable for being arranged between the first limiting portion 112 and the guide wheel 2; one end of the guide wheel 2 facing the first locking nut 71 is sealedly connected to the first shaft body 111 through the first sealing structure 81; one end of the guide wheel 2 facing the first limiting portion 112 is sealedly connected to the first shaft body 111 through the second sealing structure 82.

[0044] In this embodiment, the upper end of the guide wheel 2 is sealed and connected to the first shaft body 111 through the first sealing structure 81, and the lower end of the guide wheel 2 is sealed and connected to the first shaft body 111 through the second sealing structure 82. The first sealing structure 81 includes a first oil slinger 811 and a first labyrinth ring 812, both of which are annular, and the first labyrinth ring 812 is connected to the upper end of the guide wheel 2 through a fastener, the first oil slinger 811 is sleeved on the first shaft body 111 and is suitable for rotating around the first shaft body 111, and the first oil slinger 811 is located between the first labyrinth ring 812 and the first shaft body 111 and connects the first labyrinth ring 812 and the first shaft body 111. Specifically, the upper end of the first labyrinth ring 812 is provided with a second annular plug-in portion 8121 and a second slot 8122, and the lower end of the first oil deflector ring 811 is provided with a third annular plug-in portion 8111 and a third slot 8112. The second plug-in portion 8121 is plug-fitted with the third slot 8112, and the third plug-in portion 8111 is plug-fitted with the second slot 8122. On the one hand, while ensuring the stable connection between the first oil deflector ring 811 and the first labyrinth ring 812, a labyrinth seal is formed between the first oil deflector ring 811 and the first labyrinth ring 812, thereby ensuring the stability of the sealed connection between the upper end of the guide wheel 2 and the first shaft body 111; on the other hand, the first oil deflector ring 811 and the first labyrinth ring 812 are suitable for relative rotation, thereby ensuring the smoothness of the rotational connection between the guide wheel 2 and the first shaft body 111 through the bearing 6. The second sealing structure 82 includes a second oil deflector ring 821, which is suitable for being arranged between the guide wheel 2 and the first limiting portion 112, and the second oil deflector ring 821 is suitable for being plugged into and matched with the first limiting portion 112, and connected to the lower end of the guide wheel 2 through fasteners. Specifically, the upper end of the first limiting portion 112 is provided with a fourth annular plug-in portion 1121 and a fourth slot 1122, and the lower end of the second oil deflector ring 821 is provided with a fifth annular plug-in portion 8211 and a fifth slot 8212. The fourth plug-in portion 1121 is plug-fitted with the fifth slot 8212, and the fifth plug-in portion 8211 is plug-fitted with the fourth slot 1122. On the one hand, while ensuring the stable connection between the second oil deflector ring 821 and the first limiting portion 112, a labyrinth seal is formed between the second oil deflector ring 821 and the first limiting portion 112, thereby ensuring the stability of the sealed connection between the lower end of the guide wheel 2 and the first limiting portion 112; on the other hand, the second oil deflector ring 821 and the first limiting portion 112 are suitable for relative rotation, thereby ensuring the smoothness of the rotational connection between the guide wheel 2 and the first shaft body 111 through the bearing 6.

[0045] Optionally, the first limiting structure 7 further includes a gasket 72 and a locking ring 73. The first locking nut 71, the gasket 72 and the locking ring 73 are sequentially arranged at the upper end of the first shaft body 11 from top to bottom. Based on the first groove 113 being arranged at the upper end of the first shaft body 111, the locking ring 73 is used to limit the bottom of the first groove 113 in the vertical direction and the upper end face of the first oil retaining ring 811 to be in the same plane, thereby ensuring the stability of the sealing connection between the upper end of the guide wheel 2 and the first shaft body 111 through the first sealing structure 81.

[0046] Optionally, combined Figure 1-Figure 5 As shown, the guide wheel mounting structure also includes an end cover 9 suitable for being arranged between the guide wheel seat 3 and the second limiting structure 4, the end cover 9 includes an end cover body 91 and a first plug-in portion 92 protruding from the end cover body 91, the first plug-in portion 92 is suitable for plugging and matching with the guide wheel seat 3, and the end cover body 91 is suitable for being connected to the guide wheel seat 3 through fasteners.

[0047] Since the guide wheel 2 is arranged above the guide wheel seat 3, in this embodiment, the lower end of the guide wheel seat 3 is provided with an end cover 9. The first plug-in portion 92 of the end cover 9 is arranged at the upper end of the end cover body 91, and the end cover body 91 is connected to the lower end of the guide wheel seat 3 by a fastener, and the first plug-in portion 92 is inserted into the first slot 34 formed by the lower end of the protruding structure 32 and the inner side wall of the guide wheel seat 3, and the first plug-in portion 92 cooperates with the first slot 34 to improve the stability of the connection between the end cover 9 and the guide wheel seat 3. Moreover, the end cover body 91 and the first plug-in portion 92 are both annular, so as to be sleeved on the second shaft body 121, and to facilitate the second shaft body 121 to pass through the end cover 9. In addition, the area enclosed by the end cover 9 (i.e., the inner ring of the end cover 9) is in clearance fit with the second shaft body 121. On the one hand, it is convenient for the end cover 9 to cooperate with the second limiting structure 4 to limit the relative displacement of the second shaft body 12 and the guide wheel seat 3; on the other hand, the inner ring side wall of the end cover 9 and the groove wall of the key groove 31 play a role in limiting the second shaft body 12 on the horizontal plane, so as to prevent the eccentric shaft 1 from shaking in the horizontal direction, and further improve the stability of the connection between the eccentric shaft 1 and the guide wheel seat 3. In this way, by setting the end cover 9, the inside of the guide wheel seat 3 at the lower end of the guide wheel seat 3 can be dustproof, waterproof, anti-corrosion and protective, that is, the end cover 9 can play a role in dustproof, waterproof, anti-corrosion and protective for the plug-in fit of the spring 5 and the key structure 122 and the key groove 31, thereby improving the stability and reliability of the guide wheel installation structure.

[0048] Optionally, combined Figure 1 , Figure 2 As shown, the second limiting structure 4 includes a limiting plate 41 and a second locking nut 42. A second annular groove 123 is provided at one end of the second shaft body 121 away from the first shaft body 11. The limiting plate 41 is locked on the second shaft body 121 at the second groove 123 through the second locking nut 42.

[0049] Based on the guide wheel 2 being arranged above the guide wheel seat 3, in this embodiment, a second annular groove 123 is provided at the lower end of the second shaft body 121, and the limiting plate 41 is locked on the second shaft body 121 at the second groove 123 by the second locking nut 42 to ensure the stability of the connection between the second limiting structure 4 and the second shaft body 121. In some embodiments, a fastening glue is added between the second locking nut 42 and the second shaft body 121 to further improve the stability of the connection between the second limiting structure 4 and the second shaft body 121.

[0050] Optionally, combined Figure 1 , Figure 2 and Figure 5 As shown, the lower end of the guide wheel seat 3 is provided with a mounting seat 33 perpendicular to the axis of the guide wheel seat 3, and the guide wheel seat 3 is used to connect the bogie. The mounting seat 33 is an annular plate structure to increase the connection area between the mounting seat 33 and the bogie, thereby improving the stability of the connection between the guide wheel seat 3 and the bogie. Moreover, the mounting seat 33 can be connected to the bogie through a fastener, or the mounting seat 33 can be connected to the bogie by welding.

[0051] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A guide wheel installation structure, characterized in that: The invention comprises an eccentric shaft (1), a guide wheel (2), and a guide wheel seat (3) suitable for being arranged on a bogie of a magnetic suspension vehicle, wherein the eccentric shaft (1) comprises a first shaft body (11) and a second shaft body (12) which are integrally formed and have axes parallel to each other, the first shaft body (11) is rotatably connected to the guide wheel (2), the second shaft body (12) is plug-fitted to the guide wheel seat (3), and the second shaft body (12) and the guide wheel seat (3) are suitable for relative movement in the axial direction of the guide wheel seat (3); The guide wheel mounting structure further comprises a second limiting structure (4); an end of the second shaft (12) away from the first shaft (11) passes through the guide wheel seat (3) and extends out; the second limiting structure (4) is suitable for being arranged at an end of the second shaft (12) away from the first shaft (11), and is suitable for limiting the relative displacement between the eccentric shaft (1) and the guide wheel seat (3); The second shaft body (12) comprises a second shaft body (121) and a key structure (122) protruding from the second shaft body (121); a key groove (31) matching the key structure (122) is provided on the inner side wall of the guide wheel seat (3); the key structure (122) and the key groove (31) are plug-fitted; and the extension directions of the key structure (122) and the key groove (31) are both parallel to the axial direction of the key groove (31); the key structure (122) is suitable for moving in the key groove (31) along the extension direction of the key groove (31); The first shaft (11) is provided with an oil passage (114) at the axis center; A mounting seat (33) for connecting to the bogie is provided at the lower end of the guide wheel seat (3).

2. The guide wheel installation structure according to claim 1, characterized in that: The invention also comprises an elastic reset structure, wherein an annular protrusion structure (32) is convexly provided on the inner side wall of one end of the guide wheel seat (3) away from the first shaft body (11); the elastic reset structure is suitable for being arranged in the guide wheel seat (3) and between the key structure (122) and the protrusion structure (32), and the elastic reset structure is suitable for limiting the relative displacement between the key structure (122) and the protrusion structure (32).

3. The guide wheel installation structure according to claim 2, characterized in that: The elastic reset structure is a spring (5), and the spring (5) is suitable for being sleeved on the second shaft body (121).

4. The guide wheel installation structure according to any one of claims 1 to 3, characterized in that: It also comprises a bearing (6), wherein the bearing (6) is suitable for being arranged between the first shaft body (11) and the guide wheel (2), and the first shaft body (11) and the guide wheel (2) are rotatably connected via the bearing (6).

5. The guide wheel installation structure according to claim 4, characterized in that: The invention also comprises a first limiting structure (7), wherein the first limiting structure (7) comprises a first locking nut (71); the first shaft body (11) comprises a first shaft body (111) and a first limiting portion (112), wherein the first limiting portion (112) is protrudingly arranged on a side wall at an end where the first shaft body (111) is connected to the second shaft body (12), and the first locking nut (71) is threadedly connected to the first shaft body (111) at an end of the first shaft body (111) away from the second shaft body (12); and the guide wheel (2) and the bearing (6) are adapted to be arranged between the first locking nut (71) and the first limiting portion (112).

6. The guide wheel mounting structure according to claim 5, characterized in that: The invention also comprises a sealing assembly (8), wherein the sealing assembly (8) comprises a first sealing structure (81) suitable for being arranged between the first locking nut (71) and the guide wheel (2), and a second sealing structure (82) suitable for being arranged between the first limiting portion (112) and the guide wheel (2); an end of the guide wheel (2) facing the first locking nut (71) is sealedly connected to the first shaft body (111) through the first sealing structure (81); and an end of the guide wheel (2) facing the first limiting portion (112) is sealedly connected to the first shaft body (111) through the second sealing structure (82).

7. The guide wheel mounting structure according to claim 6, characterized in that: The invention also comprises an end cover (9) suitable for being arranged between the guide wheel seat (3) and the second limiting structure (4), the end cover (9) comprising an end cover body (91) and a first plug-in portion (92) protruding from the end cover body (91), the first plug-in portion (92) being suitable for plugging and cooperating with the guide wheel seat (3), and the end cover body (91) being suitable for being connected to the guide wheel seat (3) via a fastener.

8. The guide wheel installation structure according to any one of claims 1 to 3, characterized in that: The second limiting structure (4) comprises a limiting plate (41) and a second locking nut (42); an annular second groove (123) is provided at one end of the second shaft body (121) away from the first shaft body (11); the limiting plate (41) is locked on the second shaft body (121) at the second groove (123) via the second locking nut (42).

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