CN217143456U

CN217143456U - Grinding mechanism and track grinding equipment

Info

Publication number: CN217143456U
Application number: CN202220958728.5U
Authority: CN
Inventors: 唐建; 晏勇; 杨萌
Original assignee: Sichuan Klt Carbide Co ltd
Current assignee: Sichuan Klt Carbide Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-08-09
Anticipated expiration: 2032-04-24

Abstract

The application provides a polishing mechanism and track polishing equipment, wherein the polishing mechanism comprises a frame body and a polishing unit, the polishing unit comprises a polishing belt, a driving assembly and an adjusting assembly, the driving assembly is connected with the frame body, the polishing belt is connected with the driving assembly, and the driving assembly is used for driving the polishing belt to rotate; on the support body was located to the adjusting part, the adjusting part was used for with the area butt of polishing to adjust the crooked degree in area of polishing. Accurate adjustment of the polishing radian is achieved before polishing, the polishing quality of the rail is high, and the consistency is good. In addition, in the polishing process, the polishing angle and other adjustments are not needed to be carried out repeatedly, time and labor are saved, and efficiency is high. The bending degree of the grinding belt can be flexibly adjusted according to requirements, and the application range is wide.

Description

Grinding mechanism and track grinding equipment

Technical Field

The utility model relates to an equipment field of polishing particularly, relates to a grinding machanism and track equipment of polishing.

Background

At present, medium and low speed magnetic levitation, intercity light rail and subway generally use a third rail for power supply, the third rail can generate serious 'click' sound when a current-receiving boot passes due to production precision, construction precision of a roadbed and a connection mode, the sound is generated, the abrasion of the current-receiving boot is increased to cause arc discharge, huge noise is generated to cause reduction of vehicle running quality, the current solution is to polish a seam through a polisher manually, but the consistency of polishing cannot be guaranteed at the present stage to operate by experience because of pure manual polishing, and time, labor and efficiency are extremely low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grinding machanism and track equipment of polishing, it can improve the quality of polishing to labour saving and time saving, it is efficient.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a grinding mechanism, include:

the polishing unit comprises a polishing belt, a driving assembly and an adjusting assembly, the driving assembly is connected with the frame body, the polishing belt is connected with the driving assembly, and the driving assembly is used for driving the polishing belt to rotate; the adjusting component is arranged on the frame body and is used for abutting against the polishing belt so as to adjust the bending degree of the polishing belt.

In an optional embodiment, the adjusting assembly comprises a linear telescopic structure, the linear telescopic structure is arranged on the frame body, and the linear telescopic structure is used for abutting against the polishing belt so as to adjust the bending degree of the polishing belt.

In an optional embodiment, the linear telescopic structure comprises a mounting seat, a driving part, a driven part and an abutting part, the mounting seat is connected with the frame body, the driving part and the mounting seat are rotatably connected around a first axis, and the driving part and the mounting seat are relatively fixed in the extending direction of the first axis; the driven part is in threaded connection with the driving part, the driven part and the mounting seat are connected in a sliding mode in the extending direction of the first axis, and the driven part and the mounting seat are fixed relatively in the circumferential direction of the first axis; the driven piece is provided with a first inclined plane; the abutting piece is connected with the mounting seat in a sliding mode on a second axis, the abutting piece is provided with a second inclined surface, and the first inclined surface abuts against the second inclined surface; the abutting piece is used for abutting against the polishing belt; wherein the first axis and the second axis have an included angle.

In an alternative embodiment, the mounting seat is provided with a guide hole, and the abutting piece is slidably arranged in the guide hole in a penetrating mode.

In an alternative embodiment, the conditioning assembly is located within the area enclosed by the sanding belt.

In an optional embodiment, the grinding mechanism further comprises a tensioning assembly, the tensioning assembly comprises a driver, a swinging plate and a tensioning wheel, the driver is arranged on the frame body, the driver is rotatably connected with the swinging plate, the swinging plate is rotatably connected with the frame body, and the tensioning wheel is connected with the swinging plate; the driver is used for driving the swinging plate to rotate relative to the frame body so as to adjust the tightness of the grinding belt through the tensioning wheel.

In an alternative embodiment, the tensioning assembly further comprises a force-discharging member, the swinging plate being rotatably connected to the driver simultaneously with the force-discharging member about a predetermined axis.

In a second aspect, the utility model provides a track equipment of polishing, the track equipment of polishing includes:

the grinding mechanism of any one of the preceding embodiments, the base member is used for being connected with the track of waiting to polish, the support body with the base member slidable connects, the area of polishing is used for with the track butt of waiting to polish.

In an optional embodiment, the track grinding equipment further comprises a feeding control mechanism, wherein the feeding control mechanism comprises an elastic member, a push rod, an adjusting member and a switch unit, the push rod is slidably connected with the frame body, the adjusting member is slidably connected with the push rod in a lockable manner, and the elastic member is clamped between the adjusting member and the frame body and used for enabling the frame body to have a motion trend close to the track to be ground; the switch unit is connected to the frame body and the base body at the same time, the switch unit is provided with a first position and a second position which are mutually switched, and when the switch unit is located at the first position, the frame body can slide relative to the base body in the direction close to the rail to be polished; when the frame body is located at the second position, the movement of the frame body along the direction close to the rail to be polished is limited.

In an optional embodiment, the rail polishing device further comprises an over-polishing prevention mechanism, wherein the over-polishing prevention mechanism is connected with the frame body and used for abutting against the rail to be polished when polishing is completed so as to limit the polishing belt to be close to the rail to be polished, and therefore the polishing belt is prevented from being over-polished.

The embodiment of the utility model provides a beneficial effect is:

to sum up, the grinding machanism that this embodiment provided, during the use, the cooperation base member uses, with base member swing joint, the base member is installed on treating the track of polishing, make grinding mechanism on the polishing area with treat the track butt of polishing, then, according to required radian operation adjusting part of polishing, adjusting part can drive the motion of polishing area, adjust the degree of curvature in polishing area, thereby make the degree of curvature in polishing area correspond with the required radian of polishing of treating the track of polishing, so, realized the accurate adjustment of the radian of polishing promptly before polishing, orbital polishing quality is high, the uniformity is good. In addition, in the polishing process, the polishing angle and other adjustments are not needed to be carried out repeatedly, time and labor are saved, and efficiency is high. The bending degree of the grinding belt can be flexibly adjusted according to requirements, and the application range is wide.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a viewing angle of a rail grinding apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another view angle of the rail grinding apparatus according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of another view angle of the track grinding device according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an adjusting assembly according to an embodiment of the present invention.

Icon:

100-a substrate; 110-a substrate; 120-a clamping unit; 121-fixed splint; 122-a movable splint; 123-a first drive assembly; 200-a polishing mechanism; 210-a frame body; 220-a grinding unit; 221-grinding the belt; 222-a second drive assembly; 2221-drive sprocket set; 2222-a drive chain; 2223-drive roll; 2224-driven rollers; 223-an adjustment assembly; 2231-a mount; 2232-an active part; 2233-a follower; 22331 — a first bevel; 2234-an abutment; 22341-a second bevel; 230-a tension assembly; 231-a driver; 232-a swing plate; 233-fixed seat; 234-a tension wheel; 235-a force-relief member; 240-a drive motor; 300-a feed control mechanism; 310-an elastic member; 320-a push rod; 330-an adjusting member; 340-a switching unit; 341-eccentric wheel; 400-an anti-over-grinding mechanism; 410-adjusting rod; 420-limiting head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, the third rail needs to be polished before use, and in the prior art, the manual work is mainly used for polishing by using a polishing machine, so that the time and the labor are wasted, the efficiency is low, the polishing amount is controlled only by the operation experience of workers, the consistency is poor, and the polishing quality is poor.

In view of this, designers design a track polishing device, which can realize automatic polishing, and is time-saving, labor-saving and low in efficiency; and can adjust the volume of polishing according to the demand, the precision of polishing is high, and the accuracy is high, and the high quality, application scope is wide.

Referring to fig. 1-2, in the present embodiment, the track grinding apparatus includes a substrate 100, a grinding mechanism 200, a feed control mechanism 300, and an anti-over-grinding mechanism 400. The base body 100 is used for being positioned on a rail to be polished, the polishing mechanism 200 is connected with the base body 100 through the feeding control mechanism 300, and the feeding control mechanism 300 is used for providing external force to enable the polishing mechanism 200 to move relative to the base body 100, so that the polishing mechanism 200 is close to the rail to be polished, and the polishing mechanism 200 acts on the surface of the rail to be polished to automatically perform polishing operation. Prevent that mechanism 400 is worn to grind can adjust in advance according to the volume of polishing, and the restriction grinding machanism 200 is further treated the track of polishing and is polished when the volume of polishing satisfies the demands to play the effect of preventing to cross polishing, the security is high.

Referring to fig. 1, in the present embodiment, the base 100 includes a substrate 110 and two clamping units 120, the substrate 110 is a rectangular plate, and the substrate 110 has a front plate surface facing the rail to be polished. The two clamping units 120 are connected with the base plate 110 and at least partially protrude from the front panel, and the two clamping units 120 are used for clamping on a rail to be polished. Optionally, the clamping unit 120 includes a fixed clamp plate 121, a movable clamp plate 122 and a first driving assembly 123, the fixed clamp plate 121 is fixedly connected to the front panel, the movable clamp plate 122 is connected to the first driving assembly 123, the first driving assembly 123 is connected to the base plate 110, and the first driving assembly 123 is configured to drive the movable clamp plate 122 to be close to or away from the fixed clamp plate 121, so as to adjust a distance between the movable clamp plate 122 and the fixed clamp plate 121, and clamp the rail to be polished by using a combined action of the movable clamp plate 122 and the fixed clamp plate 121.

It should be appreciated that the first drive assembly 123 may be a pneumatic cylinder, a hydraulic cylinder, a lead screw drive, or an electric push rod 320, among others. The first driving assembly 123 drives the movable clamp plate 122 to slide relative to the fixed clamp plate 121 in the first direction, and the fixed clamp plate 121 and the movable clamp plate 122 of the same first driving assembly 123 are arranged opposite to each other in the first direction. The two first driving assemblies 123 are spaced apart in a second direction, and in this embodiment, the first direction and the second direction are perpendicular. Obviously, in other embodiments, the first direction and the second direction may also be at other angles than perpendicular, which are not zero.

Further, a side surface of the substrate 110 in the first direction is provided with a groove, and the groove is used for avoiding the polishing mechanism 200.

Referring to fig. 1 to 3, in the present embodiment, optionally, the grinding mechanism 200 includes a frame 210 and a grinding unit 220, and the grinding unit 220 is mounted on the frame 210. The frame body 210 is disposed at the position of the groove, and the frame body 210 is slidably connected with the substrate 110 in a third direction, wherein the first direction, the second direction and the third direction are pairwise perpendicular. And, the frame body 210 can drive the grinding unit 220 to protrude from the groove to abut against the rail to be ground when moving in the third direction with respect to the base plate 110.

It should be appreciated that the frame body 210 and the base plate 110 can be slidably connected by a guide rail, which can improve the firmness of the combination and the stability of the sliding of the two.

Optionally, the polishing unit 220 includes a polishing belt 221, a second driving assembly 222 and an adjusting assembly 223, the second driving assembly 222 is connected to the frame body 210, the polishing belt 221 is connected to the second driving assembly 222, and the second driving assembly 222 is configured to drive the polishing belt 221 to rotate; an adjustment assembly 223 is disposed on the frame 210 and located in the area enclosed by the sanding belt 221, the adjustment assembly 223 being configured to abut against the sanding belt 221 to adjust the degree of curvature of the sanding belt 221. The second driving assembly 222 includes a transmission sprocket set 2221, a transmission chain 2222, a driving roller 2223 and a driven roller 2224, the transmission sprocket set 2221 is disposed on the frame body 210, and the transmission chain 2222 is engaged with the transmission sprocket set 2221. The driving wheel and the driven roller 2224 are both rotatably disposed on the frame body 210, and the output shaft of the transmission chain wheel set 2221 is connected with the driving roller 2223. The sanding belt 221 is simultaneously tensioned over the drive roller 2223 and the driven roller 2224. The input shaft of the driving sprocket set 2221 is used for connecting with the driving motor 240, and the driving motor 240 may be disposed on the frame body 210 or on the base plate 110. Since the torque of the driving motor 240 is transmitted through the transmission chain 2222, even if the frame body 210 drives the transmission chain wheel set 2221 to displace relative to the base plate 110, the angle between the transmission chain 2222 and the output shaft of the driving motor 240 is changed in the horizontal plane, and interference is not generated, and normal transmission of power is not affected. In addition, a tension adjusting mechanism may be provided on the frame body 210 or the base plate 110 for adjusting the tension of the driving chain 2222.

Referring to fig. 3-4, optionally, the adjusting assembly 223 includes a linear telescopic structure disposed on the frame body 210, and the linear telescopic structure is used for abutting against the polishing belt 221 to adjust the bending degree of the polishing belt 221. In this embodiment, optionally, the linear telescopic structure includes a mounting seat 2231, a driving member 2232, a driven member 2233, and an abutting member 2234, the mounting seat 2231 is connected to the frame body 210, and the driving member 2232 is rotatably connected to the mounting seat 2231 around a first axis, and the two are relatively fixed in an extending direction of the first axis, for example, the driving member 2232 is rotatably connected to the mounting seat 2231 through a bearing. The driven member 2233 is screwed with the driving member 2232, and the driven member 2233 is slidably connected with the mounting block 2231 in the extending direction of the first axis, and the driven member 2233 and the mounting block 2231 are fixed relatively to each other in the circumferential direction of the first axis, for example, the driven member 2233 has a fitting surface which is a non-circular surface and is slidably fitted with the mounting block 2231. Meanwhile, the follower 2233 is provided with a first slope 22331. The mounting seat 2231 is provided with a guide hole, the abutting piece 2234 is arranged in the guide hole and is connected with the mounting seat 2231 in a sliding way on the second axis, the abutting piece 2234 is provided with a second inclined surface 22341, and the first inclined surface 22331 is abutted with the second inclined surface 22341; the abutting piece 2234 is used for abutting against the inner side surface of the polishing belt 221; wherein, the first axis and the second axis have an included angle. Furthermore, the first axis is parallel to a straight line of the second direction, and the second axis is parallel to a straight line of the third direction.

When the bending degree of the polishing belt 221 needs to be adjusted to adapt to polishing operations with different requirements, a tool such as a screwdriver can be used to be in transmission connection with the driving part 2232, and a force is applied to the screwdriver to drive the driving part 2232 to rotate, so that the driven part 2233 slides relative to the mounting seat 2231 in the second direction, the first inclined surface 22331 presses the second inclined surface 22341, the abutting part 2234 drives the polishing belt 221 to protrude outwards, and the bending degree of the polishing belt 221 is increased. Similarly, when the driving member 2232 is rotated reversely, the driven member 2233 moves relative to the mounting seat 2231, the first inclined surface 22331 moves away from the second inclined surface 22341, and the abutting member 2234 moves closer to the driven member 2233 under the restoring force of the sanding belt 221 itself, so that the degree of curvature of the sanding belt 221 is reduced. The degree of bending of the polishing belt 221 can be adjusted as needed, and the application range is wide.

Referring to fig. 3, in this embodiment, optionally, the polishing mechanism 200 further includes a tensioning assembly 230, the tensioning assembly 230 includes a driver 231, a swinging plate 232, a fixed seat 233 and a tensioning wheel 234, the driver 231 is disposed on the frame body 210, the driver 231 may be a linear expansion member such as an air cylinder, the driver 231 is rotatably connected to the swinging plate 232, the fixed seat 233 is fixed to the frame body 210, the swinging plate 232 is rotatably connected to the fixed seat 233, the tensioning wheel 234 is rotatably connected to the swinging plate 232, and the tensioning wheel 234 can abut against the polishing belt 221. The driver 231 is used for driving the swing plate 232 to rotate relative to the fixed seat 233, so as to adjust the tightness of the grinding belt 221 through the tension wheel 234. Because the tension wheel 234 is rotatably connected to the swing plate 232, the tension wheel 234 can be rotated by the sanding belt 221, so as to reduce the friction between the tension wheel 234 and the sanding belt 221 and reduce the wear.

Further, the tension assembly 230 further includes a force-releasing member 235, and the swinging plate 232 and the driver 231 are both rotatably connected to the force-releasing member 235 about a predetermined axis, which is parallel to the first axis. Thus, when the polishing belt 221 needs to be replaced, the force-releasing member 235 is applied to rotate the driver 231 and the swing plate 232 together and shorten the driver 231, so that the tensioning wheel 234 can be separated from the polishing belt 221, and the polishing belt 221 can be replaced after being loosened. For example, referring to fig. 3, with the perspective of fig. 3 as a reference direction, the force-releasing member 235 is pressed downward, the driver 231 retracts, the driver 231 and the swinging plate 232 rotate, so that the tension wheel 234 is separated from the inner wall surface of the sanding belt 221, thereby facilitating the replacement of the sanding belt 221.

Referring to fig. 2 and 3, in the present embodiment, the feeding control mechanism 300 includes an elastic member 310, a push rod 320, an adjusting member 330, and a switch unit 340, the push rod 320 is slidably connected to the frame 210, the adjusting member 330 is slidably connected to the push rod 320, for example, the adjusting member 330 is a nut, and is screwed outside the push rod 320, and the adjusting member 330 can move in the extending direction of the push rod 320 relative to the push rod 320 by rotating, and the threaded connection has a self-locking function, so that the adjusting member 330 is not easy to automatically slide after sliding to a set position, and has a stable structure. The elastic member 310 is clamped between the adjusting member 330 and the frame body 210 for enabling the frame body 210 to have a movement tendency close to the rail to be polished. The switch unit 340 is connected to the frame body 210 and the base body 100 at the same time, the switch unit 340 has a first position and a second position which are switched with each other, and when the switch unit is located at the first position, the frame body 210 can slide relative to the base body 100 in a direction close to the rail to be polished; in the second position, the frame 210 is restricted from moving in a direction adjacent to the track to be polished.

It should be understood that the elastic member 310 may be a spring.

Optionally, the switch unit 340 includes an eccentric 341, the eccentric 341 is rotatably connected to the frame body 210, and when the eccentric 341 is in the first position, the eccentric 341 is spaced apart from the base plate 110, and the frame body 210 is capable of sliding relative to the base plate 110. When the eccentric wheel 341 is in the second position, the eccentric wheel 341 abuts against the wear-resistant block on the base plate 110, so that the frame body 210 and the base plate 110 are in a relatively fixed state, and the base body 100 cannot approach the rail to be polished relative to the base plate 110 under the action of the elastic member 310. It should be understood that eccentric 341 may be driven in rotation by a motor. Meanwhile, the number of the eccentric wheels 341 can be set to be a plurality, and the positions of the base plate 110 and the frame body 210 can be controlled simultaneously by the plurality of eccentric wheels 341, so that the control is more stable and reliable.

In addition, the number of the elastic member 310, the push rod 320, and the adjusting member 330 may be provided in plurality.

Optionally, the over-grinding prevention mechanism 200 is connected to the frame 210, and is configured to abut against the rail to be ground when grinding is completed, so as to limit the grinding belt 221 from approaching the rail to be ground, and thus prevent the grinding belt 221 from over-grinding. Optionally, the over-grinding prevention mechanism 200 includes a limiting head 420 and an adjusting rod 410, the adjusting rod 410 is slidably connected to the frame body 210, the adjusting rod 410 can be fixed to the frame body 210 after sliding to a set position, and the limiting head 420 is fixedly connected to the adjusting rod 410. When adjusting pole 410 and sliding, can drive and adjust the head and slide for support body 210, adjust the distance between head and the base plate 110 promptly and polish the area 221 and polish the distance that the track back removed for base plate 110, polish the area 221 and polish and take 420 to all move along with support body 210 after finishing when polishing the area 221, and spacing head 420 supports and holds on waiting to polish the track, so, support body 210 can not be further near waiting to polish the track for base plate 110, realizes preventing the function of polishing.

It should be understood that the adjusting member 330 may be screw-coupled with the frame body 210.

In addition, prevent that grinding machanism 200 is also the mechanism that sets up the machine feed volume simultaneously, through the feed volume that sets up needs in advance according to the demand of polishing before polishing, can guarantee not by many polishing, improve the precision of polishing.

The track equipment of polishing that this embodiment provided, before the operation, according to required radian operation adjusting part 223 of polishing earlier, adjusting part 223 can drive the area 221 motion of polishing, adjusts the crooked degree of the area 221 of polishing to the crooked degree that makes the area 221 of polishing corresponds with the required radian of polishing of the track of waiting to polish, so, has realized the accurate adjustment of the radian of polishing promptly before polishing, orbital high quality of polishing, the uniformity is good. In addition, in the polishing process, the polishing angle and other adjustments are not needed to be carried out repeatedly, time and labor are saved, and efficiency is high. The bending degree of the grinding belt 221 can be flexibly adjusted according to requirements, and the application range is wide.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding mechanism, comprising:

2. The sharpening mechanism of claim 1, wherein:

the adjusting component comprises a linear telescopic structure, the linear telescopic structure is arranged on the frame body, and the linear telescopic structure is used for abutting against the polishing belt to adjust the bending degree of the polishing belt.

3. The sharpening mechanism of claim 2, wherein:

the linear telescopic structure comprises a mounting seat, a driving part, a driven part and a butting part, the mounting seat is connected with the frame body, the driving part and the mounting seat are rotatably connected around a first axis, and the driving part and the mounting seat are relatively fixed in the extension direction of the first axis; the driven part is in threaded connection with the driving part, the driven part and the mounting seat are connected in a sliding mode in the extending direction of the first axis, and the driven part and the mounting seat are fixed relatively in the circumferential direction of the first axis; the driven piece is provided with a first inclined plane; the abutting part is connected with the mounting seat in a sliding mode on a second axis, the abutting part is provided with a second inclined surface, and the first inclined surface abuts against the second inclined surface; the abutting piece is used for abutting against the polishing belt; wherein the first axis and the second axis have an included angle.

4. The sharpening mechanism of claim 3, wherein:

the mounting seat is provided with a guide hole, and the abutting piece is slidably arranged in the guide hole in a penetrating mode.

5. The sharpening mechanism as recited in any one of claims 1-4, wherein:

the adjusting assembly is located in an area surrounded by the grinding belt.

6. The sharpening mechanism as recited in any one of claims 1-4, wherein:

the grinding mechanism further comprises a tensioning assembly, the tensioning assembly comprises a driver, a swinging plate and a tensioning wheel, the driver is arranged on the frame body, the driver is rotatably connected with the swinging plate, the swinging plate is rotatably connected with the frame body, and the tensioning wheel is connected with the swinging plate; the driver is used for driving the swinging plate to rotate relative to the frame body so as to adjust the tightness of the grinding belt through the tensioning wheel.

7. The sharpening mechanism of claim 6, wherein:

the tensioning assembly further comprises a force unloading piece, and the swinging plate and the driver are simultaneously connected with the force unloading piece in a rotatable mode around a preset axis.

8. A rail grinding apparatus, comprising:

the grinding mechanism of any one of claims 1-7 and a base for connection with a rail to be ground, the frame body being slidably connected with the base, the grinding belt being for abutment with the rail to be ground.

9. The orbital sharpening apparatus of claim 8, wherein:

the rail grinding equipment further comprises a feeding control mechanism, the feeding control mechanism comprises an elastic piece, a push rod, an adjusting piece and a switch unit, the push rod is connected with the frame body in a sliding mode, the adjusting piece is connected with the push rod in a sliding mode in a lockable mode, and the elastic piece is clamped between the adjusting piece and the frame body and used for enabling the frame body to have a motion trend close to the rail to be ground; the switch unit is connected to the frame body and the base body at the same time, the switch unit is provided with a first position and a second position which are mutually switched, and when the switch unit is located at the first position, the frame body can slide relative to the base body in the direction close to the rail to be polished; when the frame body is located at the second position, the movement of the frame body along the direction close to the rail to be polished is limited.

10. The orbital sharpening apparatus of claim 8, wherein:

the rail polishing equipment further comprises an over-polishing prevention mechanism, wherein the over-polishing prevention mechanism is connected with the frame body and used for abutting against the rail to be polished when polishing is completed so as to limit the polishing belt to be close to the rail to be polished, and therefore the polishing belt is prevented from being over-polished.