阅读说明：本技术 一种砂轮磨损可修复装置 (Grinding wheel abrasion repairable device ) 是由 张辽 于 2019-11-28 设计创作，主要内容包括：一种砂轮磨损可修复装置,包括装置主体,所述装置主体内下端设有左右滑动腔,所述左右滑动腔左右两壁之间可转动的设有大螺纹杆,所述大螺纹杆外圆面螺纹连接有可相对所述左右滑动腔内壁左右滑动的左右滑动块,所述左右滑动块内上端设有开口向上的上下滑动腔,所述上下滑动腔左右两壁之间可转动的设有小螺纹杆,所述小螺纹杆左右两端螺纹连接有可相对所述小螺纹杆内壁左右滑动的大滑块,两侧所述大滑块上端铰链连接有支撑杆,所述上下滑动腔内壁上端可上下滑动的设有上下滑动块,本发明通过轨道电机的三种不同模式实现对修复销的上下及左右移动,从而能高效的对磨损后的砂轮进行修整,提高资源的利用率,减少损耗。(A grinding wheel abrasion repairable device comprises a device main body, wherein a left-right sliding cavity is arranged at the lower end in the device main body, a large threaded rod is rotatably arranged between the left wall and the right wall of the left-right sliding cavity, a left sliding block and a right sliding block which can slide left and right relative to the inner wall of the left-right sliding cavity are in threaded connection with the outer circular surface of the large threaded rod, an upper-lower sliding cavity with an upward opening is arranged at the upper end in the left-right sliding block, a small threaded rod is rotatably arranged between the left wall and the right wall of the upper-lower sliding cavity, a large sliding block which can slide left and right relative to the inner wall of the small threaded rod is in threaded connection with the left end and the right end of the small threaded rod, supporting rods are in hinged connection with the upper ends of the large sliding blocks at two sides, and an upper-lower sliding block is arranged at the upper end of, the utilization rate of resources is improved, and the loss is reduced.)

1. A grinding wheel abrasion repairable device comprises a device main body, wherein a left-right sliding cavity is arranged at the lower end in the device main body, a large threaded rod is rotatably arranged between the left wall and the right wall of the left-right sliding cavity, a left sliding block and a right sliding block which can slide left and right relative to the inner wall of the left-right sliding cavity are in threaded connection with the outer circular surface of the large threaded rod, an up-down sliding cavity with an upward opening is arranged at the upper end in the left-right sliding cavity, a small threaded rod is rotatably arranged between the left wall and the right wall of the up-down sliding cavity, a large sliding block which can slide left and right relative to the inner wall of the small threaded rod is in threaded connection with the left end and the right end of the small threaded rod, supporting rods are in hinged connection with the upper ends of the large sliding blocks at two sides, an up-down sliding block is arranged at the upper end of the inner, the center of the upper end of the upper sliding block is fixedly provided with a fixed block, the center of the upper end of the fixed block is fixedly provided with a repairing pin, the large sliding block moves left and right to drive the small sliding block to move left and right so as to drive the upper sliding block and the lower sliding block to move up and down, and therefore the repairing pin is driven to move up and down to repair the abraded grinding wheel.

2. A wheel wear repairable device according to claim 1, wherein: the grinding wheel comprises an upper sliding cavity, a lower sliding cavity, a grinding wheel cavity, a spring cavity, a left sliding shaft, a right fixed disc, a spring, a main rotating shaft, a starting motor, a main rotating shaft, a grinding wheel, a left fixed disc, a right fixed disc, a spring, a main rotating shaft, a left fixed disc, a starting motor and a grinding wheel, wherein the upper wall of the upper sliding cavity is communicated with the working cavity, the upper wall of the working cavity is communicated with the grinding wheel cavity, the right wall of the grinding wheel cavity is provided with the left sliding shaft which can slide left and right, the left fixed disc is fixedly provided with the left fixed disc, the right end of the starting motor is in power connection with the left end of the main rotating shaft, and the right end of the left fixed disc is fixedly provided with the grinding wheel which surrounds.

3. A wheel wear repairable device according to claim 1, wherein: two walls intercommunication have the apron chamber about the working chamber, but apron intracavity wall horizontal slip be equipped with extend to apron in the working chamber, both sides the fixed rack that is equipped with of apron lower extreme, apron chamber lower wall right-hand member intercommunication has the gear chamber, rotatable gear shaft that is equipped with between the preceding back wall in gear chamber, the outer disc of gear shaft is fixed and is equipped with the gear, the gear with rack and pinion meshing between the rack.

4. A wheel wear repairable device according to claim 1, wherein: the upper end of the left wall of the left-right sliding cavity is communicated with an upper compound cavity, the left end of the small threaded rod extends into the upper compound cavity and is fixedly provided with a first driven bevel gear, the left end of the lower wall of the upper compound cavity is rotatably provided with a first rotating shaft, the lower end of the outer circular surface of the first rotating shaft is fixedly provided with a first driving bevel gear, the first driving bevel gear is meshed with the first driven bevel gear through a bevel gear, the upper end of the first rotating shaft is fixedly provided with a first driven bevel gear, the inner lower end of the left wall of the left-right sliding cavity is provided with a lower compound cavity, the left end of the large threaded rod extends into the upper compound cavity and is fixedly provided with a second driven bevel gear, a second rotating shaft is rotatably arranged between the upper wall and the lower wall of the lower compound cavity, the lower end of the outer circular surface of the second rotating shaft is fixedly provided with a second driving bevel, the device is characterized in that a second driven helical gear is fixedly arranged at the upper end of the outer circular surface of the second rotating shaft, a left wall of the upper composite cavity is communicated with a driving gear cavity, the upper wall of the driving gear cavity is provided with a track motor rotating shaft in a vertically sliding mode, a driving helical gear is fixedly arranged at the lower end of the track motor rotating shaft, the driving helical gear can be meshed with the first driven helical gear and the helical gear between the second driven helical gears, a motor track is arranged in the upper wall of the device main body, a track motor is arranged on the upper wall of the motor track in a vertically sliding mode, and the upper end of the track motor rotating shaft extends into the motor track and is in dynamic connection with the lower end of the track motor.

5. A wheel wear repairable device according to claim 1, wherein: the upper end of the rear wall of the device main body is communicated with a first combined cavity, the front end of the upper wall of the first combined cavity is rotatably provided with a third rotating shaft, the lower end of the third rotating shaft is fixedly provided with a third driven helical gear, the third driven helical gear can be meshed with the driving helical gear, the upper end of the outer circular surface of the third rotating shaft is fixedly provided with a first driving belt pulley, the rear end of the upper wall of the first combined cavity is rotatably provided with a fourth rotating shaft, the upper end of the outer circular surface of the fourth rotating shaft is fixedly provided with a first driven belt pulley, a first belt is wound between the first driven belt pulley and the first driving belt pulley, the lower end of the fourth rotating shaft is fixedly provided with a third driving bevel gear, the right wall of the first combined cavity is rotatably provided with a fifth rotating shaft, the left end of the fifth rotating shaft is fixedly provided with a third driven bevel gear, and the third driven bevel gear, a second combined cavity is arranged in the right wall of the first combined cavity, the right end of a fifth rotating shaft extends into the second combined cavity and is fixedly provided with a fourth driving bevel gear, the rear wall of the second combined cavity is rotatably provided with a sixth rotating shaft, the front end of the sixth rotating shaft is fixedly provided with a fourth driven bevel gear, the fourth driven bevel gear is meshed with the fourth driving bevel gear through a bevel gear, the rear end of the outer circular surface of the sixth rotating shaft is fixedly provided with a driving straight gear, the rear end of the upper wall of the second combined cavity is communicated with a third combined cavity extending rightwards, the rear end of the gear rotating shaft on the left side extends into the third combined cavity and is fixedly provided with a driven straight gear, the driven straight gear is meshed with the driving straight gear, a second driving belt pulley is fixedly arranged on the front end of the outer circular surface of the gear rotating shaft on the left side, and a second driven belt pulley is fixedly arranged in the third combined cavity and is arranged on the, and a second belt is wound between the second driven belt pulley and the second driving belt pulley.

6. A wheel wear repairable device according to claim 1, wherein: the right end of the left sliding shaft and the right sliding shaft extend to the right end of the device main body and are fixedly provided with a driving plate.

Technical Field

The invention relates to the technical field of grinding, in particular to a grinding wheel abrasion repairable device.

Background

The grinding is a processing method for cutting off redundant materials on a workpiece by using an abrasive material and a grinding tool, the grinding processing method has various forms according to different process purposes and requirements, and in order to meet development requirements, the grinding technology develops towards precision, low roughness, high efficiency, high speed and automatic grinding. The grinding processing method has various forms, and mainly adopts grinding wheel to grind in production. The grinder can process materials with higher hardness, such as hardened steel, hard alloy and the like; brittle materials such as glass, granite, etc. can also be processed. The grinding machine can grind with high precision and small surface roughness, and can grind with high efficiency, such as strong grinding. In the grinding process, the grinding wheel is often accompanied by a lot of abrasion, and the abraded grinding wheel has serious influence on the grinding quality precision.

Disclosure of Invention

The technical problem is as follows:

in the grinding process, the grinding wheel is often accompanied by a lot of abrasion, and the abraded grinding wheel has a serious influence on the grinding quality precision.

In order to solve the problems, the embodiment designs a grinding wheel abrasion repairable device, which comprises a device main body, wherein a left-right sliding cavity is arranged at the lower end in the device main body, a large threaded rod is rotatably arranged between the left wall and the right wall of the left-right sliding cavity, a left sliding block and a right sliding block which can slide left and right relative to the inner wall of the left-right sliding cavity are connected on the outer circumferential surface of the large threaded rod in a threaded manner, an upper-lower sliding cavity with an upward opening is arranged at the upper end in the left-right sliding cavity, a small threaded rod is rotatably arranged between the left wall and the right wall of the upper-lower sliding cavity, a large sliding block which can slide left and right relative to the inner wall of the small threaded rod is connected on the left end and the right end of the small threaded rod in a threaded manner, a supporting rod is hinged at the upper end of the large sliding block at, the lower end of the small sliding block is hinged with the upper end of the supporting rod, a fixed block is fixedly arranged at the center of the upper end of the up-down sliding block, a repairing pin is fixedly arranged at the center of the upper end of the fixed block, and the large sliding block moves left and right to drive the small sliding block to move left and right so as to drive the up-down sliding block to move up and down, so that the repairing pin is driven to move up and down to repair.

Preferably, the upper wall of the upper and lower sliding cavity is communicated with a working cavity, the upper wall of the working cavity is communicated with a grinding wheel cavity, the right wall of the grinding wheel cavity is communicated with a spring cavity, the right wall of the spring cavity can slide left and right and is provided with a left sliding shaft extending into the grinding wheel cavity, a right fixing disc is fixedly arranged at the left end of the outer circular surface of the left sliding shaft and the right wall of the spring cavity, a spring is fixedly connected between the right end face of the right fixing disc and the right wall of the spring cavity, a main rotating shaft is rotatably arranged on the left wall of the grinding wheel cavity, a left fixing disc is fixedly arranged at the right end of the main rotating shaft, a starting motor is fixedly arranged in the left wall of the grinding wheel cavity, the right end of the starting motor is in power connection with the left end of the main rotating shaft, and.

Preferably, the left wall and the right wall of the working cavity are communicated with a cover plate cavity, the inner wall of the cover plate cavity can slide left and right and is provided with a cover plate extending into the working cavity, racks are fixedly arranged at the lower end of the cover plate, a gear cavity is communicated with the right end of the lower wall of the cover plate cavity, a gear rotating shaft is rotatably arranged between the front wall and the rear wall of the gear cavity, a gear is fixedly arranged on the outer circular surface of the gear rotating shaft, and the gear is meshed with the racks.

Preferably, the upper end of the left wall of the left-right sliding cavity is communicated with an upper compound cavity, the left end of the small threaded rod extends into the upper compound cavity and is fixedly provided with a first driven bevel gear, the left end of the lower wall of the upper compound cavity is rotatably provided with a first rotating shaft, the lower end of the outer circular surface of the first rotating shaft is fixedly provided with a first driving bevel gear, the first driving bevel gear is meshed with the first driven bevel gear through a bevel gear, the upper end of the first rotating shaft is fixedly provided with a first driven bevel gear, the inner lower end of the left wall of the left-right sliding cavity is provided with a lower compound cavity, the left end of the large threaded rod extends into the upper compound cavity and is fixedly provided with a second driven bevel gear, a second rotating shaft is rotatably arranged between the upper wall and the lower wall of the lower compound cavity, the lower end of the outer circular surface of the second rotating shaft is fixedly provided with a second driving bevel gear, the device is characterized in that a second driven helical gear is fixedly arranged at the upper end of the outer circular surface of the second rotating shaft, a left wall of the upper composite cavity is communicated with a driving gear cavity, the upper wall of the driving gear cavity is provided with a track motor rotating shaft in a vertically sliding mode, a driving helical gear is fixedly arranged at the lower end of the track motor rotating shaft, the driving helical gear can be meshed with the first driven helical gear and the helical gear between the second driven helical gears, a motor track is arranged in the upper wall of the device main body, a track motor is arranged on the upper wall of the motor track in a vertically sliding mode, and the upper end of the track motor rotating shaft extends into the motor track and is in dynamic connection with the lower end of the track motor.

Preferably, the upper end of the rear wall of the device main body is communicated with a first combined cavity, the front end of the upper wall of the first combined cavity is rotatably provided with a third rotating shaft, the lower end of the third rotating shaft is fixedly provided with a third driven helical gear, the third driven helical gear can be meshed with the driving helical gear, the upper end of the outer circular surface of the third rotating shaft is fixedly provided with a first driving belt pulley, the rear end of the upper wall of the first combined cavity is rotatably provided with a fourth rotating shaft, the upper end of the outer circular surface of the fourth rotating shaft is fixedly provided with a first driven belt pulley, a first belt is wound between the first driven belt pulley and the first driving belt pulley, the lower end of the fourth rotating shaft is fixedly provided with a third driving bevel gear, the right wall of the first combined cavity is rotatably provided with a fifth rotating shaft, the left end of the fifth rotating shaft is fixedly provided with a third driven bevel gear, and the third driven bevel gear is meshed, a second combined cavity is arranged in the right wall of the first combined cavity, the right end of a fifth rotating shaft extends into the second combined cavity and is fixedly provided with a fourth driving bevel gear, the rear wall of the second combined cavity is rotatably provided with a sixth rotating shaft, the front end of the sixth rotating shaft is fixedly provided with a fourth driven bevel gear, the fourth driven bevel gear is meshed with the fourth driving bevel gear through a bevel gear, the rear end of the outer circular surface of the sixth rotating shaft is fixedly provided with a driving straight gear, the rear end of the upper wall of the second combined cavity is communicated with a third combined cavity extending rightwards, the rear end of the gear rotating shaft on the left side extends into the third combined cavity and is fixedly provided with a driven straight gear, the driven straight gear is meshed with the driving straight gear, a second driving belt pulley is fixedly arranged on the front end of the outer circular surface of the gear rotating shaft on the left side, and a second driven belt pulley is fixedly arranged in the third combined cavity and is arranged on the, and a second belt is wound between the second driven belt pulley and the second driving belt pulley.

Preferably, the right end of the right and left slide shafts extends to the right end of the apparatus main body and a dial is fixedly provided.

The invention has the beneficial effects that: according to the invention, the repairing pin is moved up and down and left and right through three different modes of the track motor, so that the worn grinding wheel can be efficiently trimmed, the utilization rate of resources is improved, and the loss is reduced.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of a grinding wheel wear repairable device according to the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 2;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 3;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a grinding wheel abrasion repairable device, which is mainly applied to dressing an abraded grinding wheel, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to a grinding wheel abrasion repairable device, which comprises a device main body 11, wherein a left-right sliding cavity 44 is arranged at the inner lower end of the device main body 11, a large threaded rod 45 is rotatably arranged between the left wall and the right wall of the left-right sliding cavity 44, a left sliding block 43 capable of sliding left and right relative to the inner wall of the left-right sliding cavity 44 is connected with the outer circular surface of the large threaded rod 45 in a threaded manner, an upper-lower sliding cavity 70 with an upward opening is arranged at the inner upper end of the left-right sliding cavity 43, a small threaded rod 50 is rotatably arranged between the left wall and the right wall of the upper-lower sliding cavity 70, a large sliding block 42 capable of sliding left and right relative to the inner wall of the small threaded rod 50 is connected with the left-right end of the small threaded rod 50 in a threaded manner, a support rod 41 is hinged at the upper end of the large sliding blocks 42 at two sides, an upper-lower sliding block 39 is arranged, the lower end of the small sliding block 40 is hinged with the upper end of the supporting rod 41, the center of the upper end of the up-down sliding block 39 is fixedly provided with a fixed block 38, the center of the upper end of the fixed block 38 is fixedly provided with a repairing pin 37, the small sliding block 40 is driven to move left and right through the left and right movement of the large sliding block 42, so that the up-down sliding block 39 is driven to move up and down, and the repairing pin 37 is driven to move up and down to repair.

Beneficially, the upper wall of the up-down sliding cavity 70 is communicated with a working cavity 36, the upper wall of the working cavity 36 is communicated with a grinding wheel cavity 30, the right wall of the grinding wheel cavity 30 is communicated with a spring cavity 33, a left sliding shaft 35 and a right sliding shaft 35 which extend into the grinding wheel cavity 30 are arranged on the right wall of the spring cavity 33 in a left-right sliding manner, a right fixed disc 31 is fixedly arranged on the left end of the outer circular surface of the left sliding shaft 35, a spring 32 is fixedly connected between the right end surface of the right fixed disc 31 and the right wall of the spring cavity 33, a main rotating shaft 27 is rotatably arranged on the left wall of the grinding wheel cavity 30, a left fixed disc 28 is fixedly arranged on the right end of the main rotating shaft 27, a starting motor 26 is fixedly arranged in the left wall of the grinding wheel cavity 30, the right end of the starting motor 26 is in power connection with the left end of the main rotating shaft 27, and a.

Beneficially, the left wall and the right wall of the working chamber 36 are communicated with a cover plate chamber 21, the cover plate 24 extending into the working chamber 36 is arranged on the inner wall of the cover plate chamber 21 in a left-right sliding manner, racks 23 are fixedly arranged at the lower ends of the cover plates 24 on the two sides, a gear chamber 20 is communicated with the right end of the lower wall of the cover plate chamber 21, a gear rotating shaft 19 is rotatably arranged between the front wall and the rear wall of the gear chamber 20, a gear 18 is fixedly arranged on the outer circular surface of the gear rotating shaft 19, and the gear 18 is engaged with the racks 23.

Beneficially, the upper end of the left wall of the left-right sliding cavity 44 is communicated with an upper compound cavity 71, the left end of the small threaded rod 50 extends into the upper compound cavity 71 and is fixedly provided with a first driven bevel gear 49, the left end of the lower wall of the upper compound cavity 71 is rotatably provided with a first rotating shaft 14, the lower end of the outer circular surface of the first rotating shaft 14 is fixedly provided with a first driving bevel gear 13, the first driving bevel gear 13 is in bevel gear engagement with the first driven bevel gear 49, the upper end of the first rotating shaft 14 is fixedly provided with a first driven bevel gear 15, the inner lower end of the left wall of the left-right sliding cavity 44 is provided with a lower compound cavity 72, the left end of the large threaded rod 45 extends into the upper compound cavity 71 and is fixedly provided with a second driven bevel gear 46, a second rotating shaft 47 is rotatably provided between the upper wall and the lower wall of the lower compound cavity 72, the lower end of the outer circular surface of the second rotating, the device is characterized in that a second driving bevel gear 48 is meshed with a bevel gear between second driven bevel gears 46, a second driven bevel gear 73 is fixedly arranged at the upper end of the outer circular surface of a second rotating shaft 47, a left wall of an upper composite cavity 71 is communicated with a left wall of a lower composite cavity 72 to form a driving gear cavity 12, a track motor rotating shaft 17 is arranged on the upper wall of the driving gear cavity 12 in a vertically sliding manner, a driving bevel gear 16 is fixedly arranged at the lower end of the track motor rotating shaft 17, the driving bevel gear 16 is meshed with a bevel gear between a first driven bevel gear 15 and the second driven bevel gear 73, a motor track 22 is arranged in the upper wall of the device main body 11, a track motor 25 is arranged on the upper wall of the motor track 22 in a vertically sliding manner, and the upper end of the track motor rotating shaft 17 extends into the motor track 22 and is in power.

Beneficially, a first combining cavity 57 is communicated with the upper end of the rear wall of the device body 11, a third rotating shaft 53 is rotatably arranged at the front end of the upper wall of the first combining cavity 57, a third driven helical gear 51 is fixedly arranged at the lower end of the third rotating shaft 53, the third driven helical gear 51 can be engaged with the helical gear of the driving helical gear 16, a first driving pulley 74 is fixedly arranged at the upper end of the outer circular surface of the third rotating shaft 53, a fourth rotating shaft 54 is rotatably arranged at the rear end of the upper wall of the first combining cavity 57, a first driven pulley 55 is fixedly arranged at the upper end of the outer circular surface of the fourth rotating shaft 54, a first belt 52 is wound between the first driven pulley 55 and the first driving pulley 74, a third driving bevel gear 56 is fixedly arranged at the lower end of the fourth rotating shaft 54, a fifth rotating shaft 59 is rotatably arranged at the right wall of the first combining cavity 57, a third driven bevel gear 58 is fixedly arranged at the left, third driven bevel gear 58 with bevel gear meshing between third drive bevel gear 56, be equipped with second combination chamber 75 in the first combination chamber 57 right wall, fifth pivot 59 right-hand member extends to in the second combination chamber 75 and the fixed fourth drive bevel gear 60 that is equipped with, the rotatable sixth pivot 65 that is equipped with of second combination chamber 75 back wall, the fixed fourth driven bevel gear 61 that is equipped with in sixth pivot 65 front end, fourth driven bevel gear 61 with bevel gear meshing between the fourth drive bevel gear 60, the fixed driving spur gear 66 that is equipped with of sixth pivot 65 outer disc rear end, second combination chamber 75 upper wall rear end intercommunication has the third compound chamber 67 that extends to the right side, the left side the gear shaft 19 rear end extends to in the third compound chamber 67 and the fixed driven spur gear 64 that is equipped with, driven spur gear 64 with spur gear meshing between the driving spur gear 66, the left side gear shaft 19 excircle face front end is fixed and is equipped with second drive pulley 63, right side gear shaft 19 rear end extends to in the third compound chamber 67 and the fixed second driven pulley 68 that is equipped with, second driven pulley 68 with around being equipped with second belt 62 between the second drive pulley 63.

Advantageously, the right end of the right and left slide shafts 35 extends to the right end of the apparatus body 11 and is fixedly provided with a dial 34.

The following describes in detail the use steps of a wearable grinding wheel repairable device in the present text with reference to fig. 1 to 5:

in the initial state, the track motor 25 is at the uppermost end, i.e., the driving bevel gear 16 is engaged with the third driven bevel gear 51, and the first driving bevel gear 13 is engaged with the first driven bevel gear 49.

In operation, the starting motor 26 is started to drive the main rotating shaft 27 to rotate, drive the left fixing disk 28 to rotate, drive the grinding wheel 29 to rotate, start the track motor 25 to drive the track motor rotating shaft 17 to rotate, drive the driving bevel gear 16 to rotate, drive the third driven bevel gear 51 to rotate through bevel gear engagement, drive the third rotating shaft 53 to rotate, drive the first driving pulley 74 to rotate, drive the first driven pulley 55 to rotate through belt transmission, drive the fourth rotating shaft 54 to rotate, drive the third driving bevel gear 56 to rotate, drive the third driven bevel gear 58 to rotate through bevel gear engagement, drive the fifth rotating shaft 59 to rotate, drive the fourth driving bevel gear 60 to rotate, drive the fourth driven bevel gear 61 to rotate through bevel gear engagement, drive the sixth rotating shaft 65 to rotate, drive the driving spur gear 66 to rotate, drive the driven spur gear 64 to rotate through spur gear engagement, and drive the left side gear rotating shaft 19 to rotate, the second driving pulley 63 is driven to rotate, the second driven pulley 68 is driven to rotate through belt transmission, the right side gear rotating shaft 19 is driven to rotate, the two side gears 18 are driven to rotate, the rack 23 is driven to move towards the side away from the center through gear and rack meshing, so that the cover plate 24 is driven to move towards the side away from the center, at the moment, the track motor 25 stops rotating and moves downwards until the driving bevel gear 16 is meshed with the first driven bevel gear 15, at the moment, the track motor 25 is started to drive the track motor rotating shaft 17 to rotate, the driving bevel gear 16 is driven to rotate, the first driven bevel gear 15 is driven to rotate through bevel gear meshing, the first rotating shaft 14 is driven to rotate, the first driving bevel gear 13 is driven to rotate, the first driven bevel gear 49 is driven to rotate through bevel gear meshing, the small threaded rod 50 is driven to rotate, and the, the small sliding block 40 is driven to move towards one side close to the center through the hinged connection, so that the up-down sliding block 39 is driven to move upwards, the fixed block 38 is driven to move upwards, the repairing pin 37 is driven to move upwards to abut against the lower end of the outer circular surface of the grinding wheel 29, at the moment, the track motor 25 stops starting and moves downwards until the driving bevel gear 16 is meshed with the second driven bevel gear 73, at the moment, the track motor 25 is started again to drive the track motor rotating shaft 17 to rotate, the driving bevel gear 16 is driven to rotate, the second driven bevel gear 73 is driven to rotate through the bevel gear meshing, the second rotating shaft 47 is driven to rotate, the second driving bevel gear 48 is driven to rotate, the second driven bevel gear 46 is driven to rotate through the bevel gear meshing, the large threaded rod 45 is driven to rotate, the left-right sliding.

The invention has the beneficial effects that: according to the invention, the repairing pin is moved up and down and left and right through three different modes of the track motor, so that the worn grinding wheel can be efficiently trimmed, the utilization rate of resources is improved, and the loss is reduced.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.