CN222768124U - Quick dismounting device for grinding wheel - Google Patents

Abstract

The application discloses a grinding wheel quick dismounting device which comprises a lower connecting disc, an upper mounting plate arranged on the lower connecting disc and a support disc arranged between the upper mounting plate and the lower connecting disc. The grinding wheel is accommodated between the upper mounting plate and the support disc, and the screw rod penetrates through the lower connecting disc. The supporting plate is rotatably arranged at the end part of the screw rod, and the screw rod can rotate relative to the lower connecting plate and perform lifting movement. The application can solve the technical problems of high operation difficulty, high labor intensity and low efficiency of the existing grinding wheel dismounting device.

Description

Quick dismounting device for grinding wheel

Technical Field

The application relates to the technical field of railway engineering machinery, in particular to a grinding wheel quick dismounting device applied to steel rail grinding.

Background

In the running process of the train, the steel rail is in a severe working environment for a long time, and the rail surface condition is continuously deteriorated and the rail head is deformed due to multiple reasons such as power action, natural environment, the quality of the steel rail and the like, so that the defects of wave abrasion, fat edge, flaking, rail surface scale and the like are generated, and the running safety is influenced. The rail polishing operation can remove the surface irregularity of the rail and restore the rail head to the original design requirement, thereby realizing the effective improvement of the wheel-rail relationship, slowing down the development of the surface defect of the rail, improving the surface smoothness of the rail and prolonging the service life of the rail.

The main grinding tool of the rail grinding wagon is a grinding wheel arranged on a grinding unit, and the grinding operation needs to be frequently replaced because the grinding wheel is a vulnerable and consumable part. At present, the replacement operation of the grinding wheel of the steel rail grinding wagon basically adopts a manual mode, and operators need to replace the grinding wheel in a narrow space or a trench under the wagon. And a part of operators lift the grinding wheel by a single hand, and simultaneously complete the installation and the disassembly of the grinding wheel fastening screw. And the other part of operators adopt double collaboration, one person lifts the grinding wheel, and the other person completes the disassembly of the grinding wheel fastening screw. However, as the weight of the grinding wheel is about 10kg, the grinding wheel is very laborious to disassemble and assemble, the labor intensity of personnel is high, the efficiency is low, and the effective acting time of the rail grinding wagon is seriously reduced.

In summary, the existing grinding wheel dismounting mode mainly has the following technical defects:

1) The tool for replacing the special grinding wheel is not needed, and the operation difficulty is high;

2) The grinding wheel is manually lifted, so that the labor intensity is high, the safety risk is high, and the grinding wheel is easy to smash;

3) The construction replacement is carried out by matching multiple persons;

4) The hole site can be aligned only by repeated times, so that the operation efficiency is low;

5) The device does not have an adaptive adjustment function, and the working range is very limited.

Therefore, the portable grinding wheel quick assembly disassembly device with a light and efficient structure is designed, and has very important significance for reducing labor intensity and improving operation efficiency and operation safety.

Disclosure of utility model

Therefore, the application aims to provide a quick grinding wheel dismounting device, which solves the technical problems of high operation difficulty, high labor intensity and low efficiency of the existing grinding wheel dismounting device.

In order to achieve the aim of the utility model, the utility model particularly provides a technical scheme of a grinding wheel quick dismounting device, which comprises a lower connecting disc, an upper mounting plate arranged on the lower connecting disc and a support disc arranged between the upper mounting plate and the lower connecting disc. The grinding wheel is accommodated between the upper mounting plate and the support plate, and the screw rod penetrates through the lower connecting plate. The supporting plate is rotatably arranged at the end part of the screw rod, and the screw rod can rotate relative to the lower connecting plate and perform lifting movement. When the grinding wheel is required to be installed, the grinding wheel is placed on the supporting disc, the screw rod is rotated to enable the supporting disc to ascend relative to the lower connecting disc until the grinding wheel is fastened between the upper mounting plate and the supporting disc, and then the grinding wheel is installed. When the grinding wheel needs to be disassembled, the supporting plate is enabled to ascend relative to the lower connecting plate by rotating the screw rod until the supporting plate abuts against the grinding wheel, then the grinding wheel is disassembled, the supporting plate is enabled to descend relative to the upper mounting plate by rotating the screw rod in the opposite direction until the grinding wheel falls down to the lower connecting plate, and the disassembly of the grinding wheel is completed.

Further, the grinding wheel is fixed on the grinding wheel connecting disc through a connecting bolt, a stop block is arranged on the grinding wheel connecting disc, and a positioning hole for limiting the stop block is formed in the upper mounting plate.

Further, a hand-held anti-rotation rod is arranged on the lower connecting disc and used for preventing the dismounting device from rotating when the grinding wheel is dismounted or mounted.

Further, a limiting block is further arranged on the lower connecting disc and used for limiting the grinding wheel.

Further, an end cover is arranged on the supporting disc, and a bearing is arranged between the screw and the supporting disc.

Furthermore, the bearing adopts an angular contact ball bearing.

Further, a rotating rod is arranged at the other end of the screw rod.

Further, the lower connecting disc is provided with a thread sleeve, and the screw is provided with external threads which are opposite to the internal threads of the thread sleeve in screwing direction.

Furthermore, a trapezoidal thread matching structure is adopted between the screw rod and the thread sleeve.

Furthermore, the lower connecting disc and the supporting disc are of disc-shaped structures, the supporting disc is concentrically provided with a grinding wheel bottom supporting surface and an inner circle positioning surface, and quick centering of the grinding wheel is realized through the grinding wheel bottom supporting surface and the inner circle positioning surface.

Further, the upper mounting plate is provided with an arc-shaped slot which can be fast matched with the top arc of the grinding wheel connecting disc, so that the grinding wheel fast dismounting device can be fast aligned and positioned with the grinding wheel and the grinding wheel connecting disc.

By implementing the technical scheme of the quick grinding wheel dismounting device provided by the application, the quick grinding wheel dismounting device has the following beneficial effects:

(1) The grinding wheel quick dismounting device adopts the hanging bearing structure, is light and simple to mount, can realize quick mounting and dismounting of the grinding wheel, does not need to hold the grinding wheel by a hand when the grinding wheel is replaced by a single person, greatly reduces labor intensity, and avoids the safety risk of dropping and crushing the grinding wheel;

(2) According to the quick grinding wheel dismounting device, the hand anti-rotation structure is adopted, so that the grinding wheel can be prevented from rotating automatically when the bolts are dismounted when a single person replaces the grinding wheel, the grinding wheel can be replaced efficiently, and meanwhile, the quick centering and positioning of the grinding wheel and the connecting disc can be realized;

(3) The grinding wheel quick dismounting device has the advantages of light and handy whole structure, adjustable height, complete functions, good portability and strong adaptability, avoids the defects of complex structure, heavy weight and the like of the traditional grinding wheel quick dismounting device, and is more convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application, from which other embodiments can be obtained for a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of a construction of an embodiment of a grinding wheel quick assembly disassembly apparatus according to the present application;

FIG. 2 is a schematic view of a grinding wheel quick assembly disassembly device according to an embodiment of the present application in another view;

FIG. 3 is a schematic cross-sectional view of an embodiment of the grinding wheel quick assembly disassembly device of the present application;

FIG. 4 is a schematic cross-sectional view of an embodiment of the grinding wheel quick assembly disassembly device according to the present application in another view;

FIG. 5 is a schematic perspective view of a grinding wheel quick assembly disassembly device according to an embodiment of the application;

FIG. 6 is a schematic top view of one embodiment of the grinding wheel quick assembly disassembly apparatus of the present application;

FIG. 7 is a schematic view of a mounting structure of a grinding wheel and a specific embodiment of the grinding wheel quick assembly disassembly device of the present application;

In the figure, the device comprises a 1-upper mounting plate, a 2-connecting rod, a 3-hand anti-rotation rod, a 4-lower connecting disc, a 5-limiting block, a 6-supporting disc, a 7-end cover, an 8-screw rod, a 9-rotation rod, a 10-bearing, an 11-thread bush, a 12-polishing unit, a 13-grinding wheel connecting disc, a 14-grinding wheel, a 15-stop block, a 16-connecting bolt, a 17-positioning hole, a 18-grinding wheel bottom supporting surface, a 19-inner circle positioning surface, a 20-circular arc-shaped groove and a 100-grinding wheel quick dismounting device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1 to 7, a specific embodiment of the grinding wheel quick assembly-disassembly device according to the present application is provided, and the present application will be further described with reference to the accompanying drawings and the specific embodiment.

Example 1

As shown in fig. 1 to 7, an embodiment of the grinding wheel quick assembly disassembly device of the present application specifically includes a lower connection disc 4, an upper mounting plate 1 disposed on the lower connection disc 4, and a support disc 6 disposed between the upper mounting plate 1 and the lower connection disc 4. The upper mounting plate 1 and the lower connecting disc 4 are connected through the connecting rod 2, the grinding wheel 14 is accommodated between the upper mounting plate 1 and the supporting disc 6, and the screw rod 8 penetrates through the lower connecting disc 4. The support plate 6 is rotatably provided at an end of the screw 8, and the screw 8 can rotate and perform a lifting movement with respect to the lower connection plate 4. When the grinding wheel 14 needs to be mounted, the grinding wheel 14 of the grinding unit 12 is placed on the supporting disc 6, the screw rod 8 is rotated to enable the supporting disc 6 to ascend relative to the lower connecting disc 4 until the grinding wheel 14 is fastened between the upper mounting plate 1 and the supporting disc 6, and then the grinding wheel 14 is mounted. When the grinding wheel 14 needs to be disassembled, the screw rod 8 is rotated to enable the supporting disc 6 to ascend relative to the lower connecting disc 4 until the supporting disc 6 abuts against the grinding wheel 14, then the grinding wheel 14 is disassembled, the screw rod 8 is rotated in the opposite direction to enable the supporting disc 6 to descend relative to the upper mounting plate 1 until the grinding wheel 14 falls down to the lower connecting disc 4, and the disassembly of the grinding wheel 14 is completed.

The grinding wheel 14 is fixed on the grinding wheel connecting disc 13 through a connecting bolt 16, a stop block 15 is arranged on the grinding wheel connecting disc 13, and a positioning hole 17 for limiting the stop block 15 is arranged on the upper mounting plate 1. The grinding wheel quick assembly disassembly device 100 can be directly hung on the top surface of the grinding wheel connecting disc 13, and limit matching is carried out through two symmetrical positioning holes 17 on the top surface of the grinding wheel quick assembly disassembly device 100 and stop block connecting bolts 16 of the grinding wheel connecting disc 13. The lower connecting disc 4 is provided with a hand anti-rotation rod 3, which is used for preventing the grinding wheel quick dismounting device 100 from rotating when the grinding wheel 14 is dismounted or mounted, and the hand anti-rotation rod 3 can be replaced by a rotary wheel disc. The lower connecting disc 4 is also provided with a limiting block 5, and the limiting block 5 is used for limiting the grinding wheel 14.

The end cover 7 is arranged on the support disc 6, the bearing 10 is arranged between the screw rod 8 and the support disc 6, the bearing 10 is preferably an angular contact ball bearing, and the angular contact ball bearing is replaced by a radial thrust bearing or a set of radial bearing and thrust bearing assembly. The other end of the screw rod 8 is provided with a rotating rod 9. The lower connecting disc 4 is provided with a thread bush 11, and the screw rod 8 is provided with an external thread which has the opposite screwing direction with the internal thread of the thread bush 11. The screw rod 8 and the thread bush 11 are matched by adopting trapezoidal threads, which is more beneficial to connection and power transmission. Wherein, the upper mounting plate 1, the connecting rod 2, the hand-held anti-rotation rod 3, the lower connecting disc 4 and the thread bush 11 are preferably connected together in a welding mode. The screw and thread bush rotation lifting structure can be replaced by a worm turbine lifting structure. When the worm wheel is adopted to rotate, the inner ring of the worm wheel is of a threaded structure and is equivalent to a nut of the screw rod, and the worm wheel is matched with the screw rod, so that the screw rod is driven to move up and down, and the transmission of movement is realized. The lower connecting disc 4 and the supporting disc 6 are of disc-shaped structures, the supporting disc 6 is concentrically provided with a grinding wheel bottom supporting surface 18 and an inner circle positioning surface 19, and quick centering of the grinding wheel 14 is achieved through the grinding wheel bottom supporting surface 18 and the inner circle positioning surface 19.

The upper mounting plate 1 is provided with a circular arc-shaped slot 20, and the circular arc-shaped slot 20 can be fast matched with the top circular arc of the grinding wheel connecting disc 13, so that the grinding wheel fast dismounting device 100, the grinding wheel 14 and the grinding wheel connecting disc 13 can be fast centered and positioned. The structural members of the grinding wheel quick assembly disassembly device 100 are all of lightweight structural design, a plurality of lightening holes are formed, and the whole device is very convenient to carry and use.

The grinding wheel quick assembly disassembly device 100 described in embodiment 1 avoids complex operation of fixing on a steel rail in the traditional design, and avoids heavy inconvenient carrying and use of motor driving in the traditional design, so that 10kg of grinding wheel is not required to be held by a hand when the grinding wheel is replaced by a single person, the labor intensity is greatly reduced, and the safety risk of dropping and smashing the grinding wheel is avoided. The grinding wheel quick assembly disassembly device 100 fully utilizes the structural characteristics of the grinding unit 12 and the grinding wheel connecting disc 13, is light in weight, portable and easy to operate, and can prevent the self-rotation behavior of the grinding wheel and effectively replace the grinding wheel when the grinding wheel is replaced by a single person. The grinding wheel quick assembly disassembly device 100 adopts suspended installation, is light and simple in installation, can realize quick installation and removal, and is light in structure, complete in function, very portable and easy to operate. The grinding wheel quick assembly disassembly device 100 has a centering function, can realize quick positioning and centering of the grinding wheel and the connecting disc, is provided with a set of convenient lifting device, is adjustable in height and high in adaptability, is provided with a set of rotating device, and can realize quick positioning between the grinding wheel and the connecting disc. The grinding wheel quick assembly disassembly device 100 does not need equipment such as motor drive to cooperate, avoids the defects of complex structure, lower portability and higher manufacturing price of products, can be widely popularized and used, and has very broad market prospect.

Example 2

An embodiment of a method for quickly disassembling and assembling a grinding wheel based on the device of the embodiment 1 specifically comprises the following steps:

When the old grinding wheel 14 needs to be disassembled, the rotating rod 9 is rotated clockwise, the screw rod 8 moves upwards along the threaded sleeve 11 in the vertical direction until the supporting disc 6 is propped into the inner circular ring of the grinding wheel 14 and cannot rise any more, and at the moment, the load of the grinding wheel 14 is completely borne by the supporting disc 6. Since the grinding wheel connection disc 13 and the grinding wheel 14 are fastened and connected by the (grinding wheel) connecting bolt 16. If the connecting bolt 16 is directly unscrewed, the grinding wheel 14 and the connecting disc 13 are rotated together. At the moment, the hand-held anti-rotation rod 3 is held (fixed) by one hand, and the connecting bolt 16 on the grinding wheel connecting disc 13 is unscrewed by the other hand. Three connecting bolts 16 are sequentially unscrewed along the circumferential surface of the grinding wheel 14, and thus the separation of the grinding wheel 14 from the grinding wheel connecting disc 13 is completed. Then the rotating rod 9 is rotated in the opposite direction (anticlockwise) so that the screw rod 8 moves downwards in the vertical direction along the threaded sleeve 11, the rotating rod 9 is continuously rotated until the lower end face of the grinding wheel 14 falls to the upper plane of the lower connecting disc 4, the end cover 7 falls into the lower connecting disc 4, and the grinding wheel 14 can be horizontally pushed out of the grinding wheel quick assembly disassembly device 100.

The method for quickly disassembling and assembling the grinding wheel described in the embodiment 2 further comprises the following steps:

When the old grinding wheel 14 is taken down and a new grinding wheel 14 needs to be installed, the grinding wheel 14 is placed on the upper plane of the lower connecting disc 4, the grinding wheel 14 is pushed horizontally to the circle center of the lower connecting disc 4 until the outer annular surface of the grinding wheel 14 is blocked and limited by the limiting block 5, and then the rotating rod 9 is rotated clockwise until the supporting disc 6 abuts against the grinding wheel 14 and finally rises to be in contact with the grinding wheel connecting disc 13. Since the stopper 15 is provided on the grinding wheel connection pad 13, when the upper end face of the grinding wheel 14 is misaligned with the stopper 15, the grinding wheel connection pad 13 is rotated by fine adjustment until the stopper 15 on the grinding wheel connection pad 13 and the upper end face of the grinding wheel 14 are aligned with each other, and then the rotation lever 9 is continued to be rotated so that the support pad 6 rises until the upper end face of the grinding wheel 14 abuts against and is attached to the lower end face of the grinding wheel connection pad 13. Due to the design of the bearing 10, when the rotating rod 9 is rotated, the screw rod 8 is synchronously rotated and ascends, but the supporting disc 6 is not rotated, and the structural design is convenient for the matching installation between the grinding wheel 14 and the grinding wheel connecting disc 13. Furthermore, the support disk 6 is provided with a grinding wheel bottom support surface 18 and an inner ring positioning surface 19, by means of which a rapid centering of the grinding wheel 14 can be achieved.

When the grinding wheel quick assembly disassembly device 100 needs to be installed, the grinding wheel quick assembly disassembly device 100 is integrally hung on the top surface of the grinding wheel connecting disc 13, and the lower plane of the upper mounting plate 1 is attached to the top surface of the grinding wheel connecting disc 13. In the hanging process, the circular arc grooves 20 are firstly matched and centered with the circular arc surface at the top of the grinding wheel connecting disc 13, then the positioning holes 17 are matched with the stop blocks 15 on the grinding wheel connecting disc 13 in a positioning way, and the upper mounting plate 1 is prevented from being rotated relatively in the subsequent use process, so that the upper mounting plate 1 and the grinding wheel connecting disc 13 keep synchronous movement. When the quick grinding wheel dismounting device 100 needs to be taken down, the quick grinding wheel dismounting device 100 is lifted upwards by a certain distance along the vertical direction, the lower plane of the upper mounting plate 1 is separated from the protruding height of the upper plane stop block 15 of the grinding wheel connecting disc 13, and then the whole quick grinding wheel dismounting device 100 is separated from the lateral whole.

In the description of the present application, it will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the application, which is defined by the claims, but rather by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or dimensional adjustments, which would otherwise be apparent to those skilled in the art, would be made without departing from the spirit and scope of the application.

By implementing the technical scheme of the grinding wheel quick dismounting device described in the specific embodiment of the application, the following technical effects can be achieved:

(1) The quick grinding wheel dismounting device described in the specific embodiment of the application adopts a hanging bearing structure, is light and simple to mount, can realize quick mounting and dismounting of the grinding wheel, does not need to hold the grinding wheel by a hand when the grinding wheel is replaced by a single person, greatly reduces labor intensity, and avoids the safety risk of dropping and crushing the grinding wheel;

(2) The quick grinding wheel dismounting device described in the specific embodiment of the application adopts the hand anti-rotation structure, can prevent the grinding wheel from rotating automatically when the bolts are dismounted when the grinding wheel is replaced by a single person, can replace the grinding wheel efficiently, and can realize quick centering and positioning of the grinding wheel and the connecting disc;

(3) The grinding wheel quick assembly disassembly device described by the embodiment of the application has the advantages of light and handy whole structure, adjustable height, complete functions, good portability and strong adaptability, avoids the defects of complex structure, heavy weight and the like of the traditional grinding wheel quick assembly disassembly device, and is more convenient to use.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are referred to each other.

The above description is only of the preferred embodiment of the present application, and is not intended to limit the present application in any way. While the application has been described in terms of preferred embodiments, it is not intended to be limiting. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present application or equivalent embodiments using the method and technical solution disclosed above without departing from the spirit and technical solution of the present application. Therefore, any simple modification, equivalent substitution, equivalent variation and modification of the above embodiments according to the technical substance of the present application still fall within the scope of the technical solution of the present application, unless departing from the technical solution of the present application.

Claims (11)

1. A grinding wheel quick dismounting device is characterized by comprising a lower connecting disc (4), an upper mounting plate (1) arranged on the lower connecting disc (4) and a support disc (6) arranged between the upper mounting plate (1) and the lower connecting disc (4), wherein a grinding wheel (14) is accommodated between the upper mounting plate (1) and the support disc (6), a screw rod (8) penetrates through the lower connecting disc (4), the support disc (6) is rotatably arranged at the end part of the screw rod (8), and the screw rod (8) can rotate relative to the lower connecting disc (4) and can perform lifting movement.

2. The quick grinding wheel dismounting device as claimed in claim 1, wherein the grinding wheel (14) is fixed on the grinding wheel connecting disc (13) through a connecting bolt (16), a stop block (15) is arranged on the grinding wheel connecting disc (13), and a positioning hole (17) for limiting the stop block (15) is formed in the upper mounting plate (1).

3. The grinding wheel quick assembly disassembly device according to claim 2, wherein the lower connecting disc (4) is provided with a hand-held anti-rotation rod (3) for preventing the assembly disassembly device from rotating when the grinding wheel (14) is disassembled or assembled.

4. The grinding wheel quick assembly disassembly device according to claim 2 or 3, wherein a limiting block (5) is further arranged on the lower connecting disc (4), and the limiting block (5) is used for limiting the grinding wheel (14).

5. The grinding wheel quick assembly disassembly device according to claim 4, wherein the end cover (7) is arranged on the supporting disc (6), and a bearing (10) is arranged between the screw (8) and the supporting disc (6).

6. The quick grinding wheel dismounting device as set forth in claim 5, wherein the bearing (10) is an angular contact ball bearing.

7. The grinding wheel quick assembly disassembly device according to claim 1, 2, 3, 5 or 6, wherein a rotating rod (9) is arranged at the other end of the screw rod (8).

8. The quick grinding wheel dismounting device as set forth in claim 7, wherein the lower connecting disc (4) is provided with a threaded sleeve (11), and the screw (8) is provided with an external thread which is opposite to the internal thread of the threaded sleeve (11).

9. The quick grinding wheel dismounting device as claimed in claim 8, wherein a trapezoidal thread matching structure is adopted between the screw rod (8) and the thread sleeve (11).

10. The quick grinding wheel dismounting device as set forth in claim 1, 2, 3, 5, 6, 8 or 9, wherein the lower connecting disc (4) and the supporting disc (6) are both in disc-shaped structures, a grinding wheel bottom supporting surface (18) and an inner circle positioning surface (19) are concentrically arranged on the supporting disc (6), and quick centering of the grinding wheel (14) is achieved through the grinding wheel bottom supporting surface (18) and the inner circle positioning surface (19).

11. The quick grinding wheel dismounting device as set forth in claim 10, wherein the upper mounting plate (1) is provided with a circular arc-shaped slot (20), and the circular arc-shaped slot (20) can be quickly matched with the top circular arc of the grinding wheel connecting disc (13) to realize quick centering and positioning of the quick grinding wheel dismounting device (100) and the grinding wheel (14) and the grinding wheel connecting disc (13).