Abrasive belt grinding device and rail surface fine grinding machine

Abstract

The utility model relates to an abrasive belt grinding device and a rail surface refiner. The abrasive belt grinding device comprises a mounting plate, the polishing assembly is arranged on the mounting plate, and the polishing assembly comprises a driving wheel, a driven wheel and an abrasive belt arranged outside the driving wheel and the driven wheel in a sleeving mode; the tensioning wheel assembly is arranged on the mounting plate, the tensioning wheel assembly comprises a tensioning wheel movably connected with the mounting plate, the tensioning wheel is located between the driving wheel and the driven wheel, the tensioning wheel is located on the inner side of the abrasive belt, and the tensioning wheel abuts against the abrasive belt along the outer side of the abrasive belt; according to the steel rail polishing device, high temperature generated by the polishing assembly can be effectively dispersed, new scars formed by thermal expansion on the surface of the steel rail are reduced, and compression deformation on the steel rail is also reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of rail grinding equipment, and in particular to a belt grinding device and a rail surface fine grinding machine. Background Technology

[0002] Train rails subjected to long-term operation will suffer damage such as wear, fatigue cracks, and surface defects, requiring regular maintenance to eliminate this damage and extend the rail's lifespan. Traditional grinding equipment mostly uses internal combustion engines to drive grinding wheels. However, with societal development, the applicability of this traditional internal combustion engine-driven grinding method is decreasing. The main reasons are: firstly, the exhaust fumes and noise generated by the internal combustion engine will impact the surrounding environment; secondly, grinding wheels have poor heat dissipation performance, and the high temperatures generated during the grinding process will cause the rail to expand thermally. During grinding, the grinding wheel will grind away the expanded portion along with the rail, creating new scratches on the previously ground rail; thirdly, the high hardness of the grinding wheel will cause significant pressure and deformation on the rail during grinding, which may directly lead to deformation and dents in the rail head. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the high temperature generated by grinding with a grinding wheel in the prior art cannot be effectively dissipated, resulting in the thermal expansion part of the rail being ground away by the grinding wheel and causing new scratches. In this way, a belt grinding device and rail surface fine grinding machine are provided, which can effectively dissipate the high temperature generated by the grinding components, reduce the new scratches formed on the rail surface due to thermal expansion, and also reduce the pressure deformation on the rail.

[0004] To solve the above-mentioned technical problems, this utility model provides a belt sanding device, comprising,

[0005] Mounting plate;

[0006] A grinding assembly is disposed on the mounting plate, the grinding assembly including a drive wheel, a driven wheel, and a sanding belt sleeved on the drive wheel and the driven wheel;

[0007] A tensioning wheel assembly is disposed on the mounting plate. The tensioning wheel assembly includes a tensioning wheel movably connected to the mounting plate. The tensioning wheel is located between the driving wheel and the driven wheel, and the tensioning wheel is located inside the sanding belt. The tensioning wheel abuts against the sanding belt along the outer side of the sanding belt.

[0008] In one embodiment of the present invention, the tension wheel assembly further includes a tension swing arm rotatably connected to the mounting plate, and the rotation axis of the tension swing arm is parallel to the rotation axis of the drive wheel, and the tension wheel is connected to the tension swing arm.

[0009] In one embodiment of the present invention, the tensioning assembly further includes a tensioning screw and a tensioning spring. One end of the tensioning spring is connected to the mounting plate, and the other end of the tensioning spring is connected to the tensioning screw. The tensioning screw is threadedly connected to the tensioning swing arm.

[0010] In one embodiment of this utility model, one end of the tensioning swing arm is rotatably connected to the mounting plate, and the other end of the tensioning swing arm is provided with a handle and an adjusting plate. The adjusting plate is perpendicular to the mounting plate and is threadedly connected to the tensioning screw.

[0011] In one embodiment of this utility model, a belt offset assembly is further included, which includes a bolt and a swing member. The swing member includes a rotating plate and a connecting shaft perpendicularly connected to the rotating plate. The connecting shaft is coaxially connected to the tensioning wheel. The rotating plate is rotatably connected to the tensioning swing arm, and the rotation axis of the rotating plate is perpendicular to the rotation axis of the drive wheel. The bolt is threadedly connected to the tensioning swing arm, and the threaded end of the bolt abuts against the rotating plate.

[0012] In one embodiment of the present invention, a protective shell connected to the mounting plate is further included, the grinding assembly is located inside the protective shell, the bottom of the protective shell is provided with an opening, and the driven wheel and the sanding belt extend out of the opening.

[0013] In one embodiment of this utility model, the protective shell is further provided with a clearance opening, through which the bolt, the handle, and the adjusting plate extend out of the protective shell.

[0014] In one embodiment of the present invention, the mounting plate is provided with a first fixing sleeve and a second fixing sleeve, the first fixing sleeve and the second fixing sleeve being coaxially arranged.

[0015] In one embodiment of the present invention, a grinding motor is further included, which is disposed on the mounting plate, and the rotating shaft of the grinding motor is connected to the drive wheel.

[0016] In one embodiment of this utility model, abrasive particles are uniformly distributed on the outer surface of the abrasive belt.

[0017] To solve the above problems, a rail surface grinding machine is also provided, which includes the aforementioned belt grinding device. The rail surface grinding machine is provided with a connecting shaft, and the first fixed sleeve and the second fixed sleeve are both fixedly sleeved on the outside of the connecting shaft.

[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0019] The sanding belt grinding device described in this utility model uses a drive wheel and a driven wheel to drive the sanding belt to rotate at high speed to grind the rail. The sanding belt has a relatively long grinding cycle and travel path, which can transfer more of the high temperature generated during grinding to the air, effectively reducing the temperature of the grinding assembly and preventing the rail from being burned. The sanding belt has low hardness, so the pressure deformation on the rail is small during grinding, avoiding deformation of the rail and pitting on the rail surface. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the belt sanding device in a preferred embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of another abrasive belt grinding device is shown;

[0023] Figure 3 for Figure 1 The diagram shows the structure of the tensioner assembly of the belt abrasive grinding device.

[0024] Figure 4 for Figure 1 The exploded view of the belt sanding device shown includes a belt offset component.

[0025] Figure 5 for Figure 1 The diagram shows the structure of the second fixed sleeve of the belt abrasive grinding device.

[0026] Explanation of reference numerals in the accompanying drawings: 1. Mounting plate; 11. First connecting plate; 2. Drive wheel; 21. Tensioning wheel; 22. Sanding belt; 23. Driven wheel; 3. Tensioning wheel; 31. Tensioning swing arm; 311. Upper end; 312. Lower end; 313. Rectangular notch; 32. Tensioning screw; 33. Handle; 34. Tensioning spring; 35. Rotation shaft of the tensioning swing arm; 36. Spring hanging plate; 37. Adjusting plate; 38. Opening; 4. Bolt; 41. Threaded end of bolt; 42. Rotating plate; 43. Connecting shaft; 44. Through hole; 45. Rotation shaft of the swinging component; 46. Stacking plate; 5. Grinding motor; 6. Protective shell; 7. First fixing sleeve; 71. Second fixing sleeve; 72. Screw; 73. Screw; 74. Connecting arm; 75. Second connecting plate; 8. Reinforcing plate; 9. Control cabinet. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example

[0028] Reference Figure 1 and 3 As shown, in one embodiment of this utility model, a belt sanding device is disclosed, comprising:

[0029] Mounting plate 1;

[0030] A grinding assembly is disposed on one side of the mounting plate 1. The grinding assembly includes a drive wheel 2, a driven wheel 23, and a sanding belt 22 sleeved on the drive wheel 2 and the driven wheel 23. The drive wheel 2 and the driven wheel 23 support the sanding belt 22. The drive wheel 2 drives the sanding belt 22 and the driven wheel 23 to rotate. The high-speed rotation of the sanding belt 22 grinds the rail. The sanding belt 22 has a large grinding cycle and stroke, which can carry away the high temperature generated during grinding, so that the temperature of the sanding belt 22 can be kept in a low range. In addition, the hardness of the sanding belt 22 is relatively small, and the pressure deformation on the rail during grinding is small, which can avoid the formation of pits and deformation on the rail.

[0031] A tensioning wheel 21 assembly is disposed on the mounting plate 1. The tensioning wheel 21 assembly includes a tensioning wheel 21 movably connected to the mounting plate 1. The connecting shaft 43 of the tensioning wheel 21 is parallel to the rotation shaft of the driving wheel 2. The tensioning wheel 21 is located between the driving wheel 2 and the driven wheel 23, and the tensioning wheel 21 is located inside the sanding belt 22. When it is necessary to increase the tension of the sanding belt 22, the tensioning wheel 21 can be pushed along the outside of the sanding belt 22 to press against the sanding belt 22; conversely, pushing the tensioning wheel 21 along the inside of the sanding belt 22 can reduce the tension of the sanding belt 22 or disassemble and replace the sanding belt 22.

[0032] Reference Figure 3 As shown, due to the high tension of the sanding belt 22, in order to facilitate the operator to push the tensioning wheel 21, the tensioning wheel 21 assembly also includes a tensioning swing arm 31 rotatably connected to the mounting plate 1. The tensioning swing arm 31 can rotate at a certain angle, and the rotation axis 35 of the tensioning swing arm 31 is parallel to the rotation axis of the drive wheel 2. The tensioning wheel 21 is connected to the middle of the tensioning swing arm 31, and the tensioning wheel 21 can be moved to the outside or inside of the sanding belt 22 by pushing the tensioning swing arm 31 to swing.

[0033] Reference Figure 1 and 3As shown, in order to precisely control the swing angle of the tensioning arm 31 and prevent the tensioning arm 31 from swinging arbitrarily, the tensioning assembly also includes a tensioning screw 32 and a tensioning spring 34. The tensioning screw 32 and the tensioning spring 34 are disposed on the side of the mounting plate 1 opposite to the side with the grinding assembly. One end of the tensioning spring 34 is connected to the mounting plate 1, and the other end of the tensioning spring 34 is hooked to the tensioning screw 32. The tensioning screw 32 is threadedly connected to the tensioning arm 31. When the tensioning bolt 4 is tightened, the tensioning spring 34 extends and the elastic force increases; when the tensioning bolt 4 is loosened, the tensioning spring 34 shortens and the elastic force decreases. Tightening or loosening the tensioning bolt 4 can change the elastic force of the tensioning spring 34, thereby driving the tensioning arm 31 to swing. Furthermore, in order to facilitate the replacement of the tensioning spring 34, a spring hanging plate 36 is provided on the mounting plate 1, and one end of the tensioning spring 34 is hooked to the spring hanging plate 36.

[0034] Reference Figure 4 As shown, the lower end 312 of the tensioning swing arm 31 is rotatably connected to the mounting plate 1 via a rotating shaft 35. The upper end 311 of the tensioning swing arm 31 is provided with a handle 33 and an adjusting plate 37. The adjusting plate 37 is perpendicular to the mounting plate 1. The screw hole of the adjusting plate 37 is threadedly connected to the tensioning screw 32. The lever arm of the tensioning bolt 4 is small. When the tension of the sanding belt 22 is large, if the tensioning bolt 4 cannot be turned, the tensioning swing arm 31 can be rotated by pushing the handle 33 by hand, and then the tensioning bolt 4 can be turned.

[0035] Reference Figure 4 As shown, it also includes a sanding belt offset assembly, which is used to drive the sanding belt 22 to offset axially along the tension wheel 21, so as to make the sanding effect more uniform. The sanding belt offset assembly includes a bolt 4 and a swinging component. The swinging component includes a rotating plate 42 and a connecting shaft 43 perpendicularly connected to the rotating plate 42. The tension wheel 21 is coaxially fixedly sleeved on the connecting shaft 43. The rotating plate 42 is rotatably connected to the tensioning swing arm 31 through a rotating shaft 45, and the rotating shaft 45 of the rotating plate 42 is perpendicular to the rotating shaft of the drive wheel 2. The bolt 4 is threadedly connected to the tensioning swing arm 31, and the bolt 4... The threaded end 41 of the bolt 4 abuts against the rotating plate 42. When the bolt 4 is tightened, the threaded end 41 of the bolt 4 pushes the rotating plate 42 to rotate. The rotating shaft 45 drives the tensioning wheel 21 to swing and tilt outward of the sanding belt 22. At this time, the centripetal force on the sanding belt 22 from the tensioning wheel 21 increases, and the sanding belt 22 shifts inward of the tensioning wheel 21. Similarly, when the bolt 4 is loosened, under the action of the inward contraction force of the sanding belt 22, the swinging part will rotate in the opposite direction, and the tensioning wheel 21 will shift inward of the sanding belt 22. At this time, the centripetal force on the sanding belt 22 from the tensioning wheel 21 decreases, and the sanding belt 22 shifts outward of the tensioning wheel 21.

[0036] Reference Figure 4As shown, the tensioning swing arm 31 is further provided with a rectangular notch 313, and the rotating plate 42 is located in the rectangular notch 313 and matches the rectangular notch 313 in shape. The rectangular notch 313 is provided with a rotating shaft 45, which passes through the through hole 44 of the rotating plate 42. The tensioning swing arm 31 is also provided with a stacked plate 46 stacked on one side of the rectangular notch 313. The stacked plate 46 is provided with a screw hole facing the rectangular notch 313. The bolt 4 is threadedly connected to the screw hole and the threaded end 41 abuts against the rotating plate 42.

[0037] Reference Figure 1 As shown, in order to reduce sparks, a protective shell 6 is also included connected to one side of the mounting plate 1. The grinding assembly is located inside the protective shell 6. The bottom of the protective shell 6 is provided with an opening 38, and the driven wheel 23 and the sanding belt 22 extend out of the opening 38 to grind the rail.

[0038] Reference Figure 2 As shown, in order to facilitate manual operation by the operator, the protective shell 6 is also provided with three clearance openings, through which the bolt 4, the handle 33, and the adjusting plate 37 extend out of the protective shell 6.

[0039] Reference Figure 1 As shown, the mounting plate 1 is provided with a first fixing sleeve 7 and a second fixing sleeve 71. The first fixing sleeve 7 is fixed to the connecting arm 74 of the mounting plate 1 by screws 3, and the second fixing sleeve 71 is fixed to the first connecting plate 11 of the mounting plate 1 by screws 72. The first fixing sleeve 7 and the second fixing sleeve 71 are coaxially arranged. The first fixing sleeve 7 and the second fixing sleeve 71 are used to fix the grinding device to the fine grinding machine. Further, the second fixing sleeve 71 is provided with a second connecting plate 15, which is inserted into one side of the first connecting plate 11. The first connecting plate 11 and the second connecting plate 74 are also fixedly connected by the screws 72. In this way, when disassembling the grinding device, the connecting arm 74 is loosened by turning the screws 73, and the first connecting plate 11 is loosened by turning the screws 72. The first fixing sleeve 7 and the second fixing sleeve 71 do not need to be disassembled, which simplifies the operation steps.

[0040] Reference Figure 2 As shown, further, a reinforcing plate 8 is connected to the mounting plate 1, and the first fixing sleeve 7 and the second fixing sleeve 71 are fixedly connected to the reinforcing plate 8.

[0041] Reference Figure 1 As shown, it also includes a grinding motor 5 disposed on the mounting plate 1. The rotating shaft of the grinding motor 5 is connected to the drive wheel 2. Further, the drive wheel 2 is fitted onto the rotating shaft of the motor by a limiting sleeve.

[0042] Reference Figure 1As shown, the housing of the grinding motor 5 is equipped with a control cabinet 9, and the control cabinet 9 contains a controller for controlling the start and stop of the grinding motor 5.

[0043] Furthermore, the abrasive belt 22 has a uniformly distributed abrasive particles on its outer surface, which can uniformly abrade the steel rail. Example

[0044] To solve the above problems, a rail surface grinding machine is also provided, which includes the aforementioned sanding belt 22 grinding device. The rail surface grinding machine is provided with a connecting shaft, and the first fixed sleeve 7 and the second fixed sleeve 71 are both fixedly sleeved on the outside of the connecting shaft. The rail surface grinding machine includes a lithium battery that provides power to the grinding motor 5.

[0045] The working principle of the belt sanding device described in this utility model is as follows:

[0046] The first fixing sleeve 7 and the second fixing sleeve 71 are pre-fixed onto the precision grinding machine located on the rail. Then, the first connecting plate 11 is inserted from top to bottom onto one side of the second connecting plate 75, and the connecting arm 74 and the first fixing sleeve 7 are fixedly connected by screws 73. The first connecting plate 11 and the second connecting plate 75 are fixedly connected by screws 72, completing the assembly of the grinding device. Before grinding, the handle 33 is pulled to rotate the tensioning swing arm 31 to adjust the tension of the sanding belt 22. Finally, the tensioning screw 32 is tightened to fix the tensioning swing arm 31. After the grinding motor 5 is started, it drives the drive wheel 2 to rotate. The drive wheel 2 drives the sanding belt 22 and the driven wheel 23 to rotate. The precision grinding machine controls the grinding components to approach the rail to be ground, and the part of the sanding belt 22 extending out of the protective shell 6 is used to start grinding the rail. During the grinding process, when it is necessary to increase the tension... When adjusting the offset of the sanding belt 22 on the inner side of the tensioning wheel 21, the bolt 4 can be tightened, and the threaded end 41 can be used to push the rotating plate 42 and the connecting shaft 43 to rotate, so that the tensioning wheel 21 swings / tilts to the outer side of the sanding belt 22, increasing the centripetal force of the tensioning wheel 21 on the sanding belt 22, and the sanding belt 22 moves to the inner side of the tensioning wheel 21; conversely, when it is necessary to adjust the offset of the sanding belt 22 to the outer side of the tensioning wheel 21, the bolt 4 is loosened, and the tensioning wheel 21 gradually swings to the inner side of the sanding belt 22 under the push of the inward contraction force of the sanding belt 22, the centripetal force of the tensioning wheel 21 on the sanding belt 22 decreases, and the sanding belt 22 moves to the inner side of the tensioning wheel 21. When disassembling the grinding device, first tighten the screws 73 and 72, loosen the connecting arm 74 and the first connecting plate 11, and then pull the mounting plate 1 upward until the first connecting plate 11 is completely pulled away from the second connecting plate 75.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A belt abrasive grinding device, characterized in that, include, Mounting plate; A grinding assembly is disposed on the mounting plate, the grinding assembly including a drive wheel, a driven wheel, and a sanding belt sleeved on the drive wheel and the driven wheel; A tensioning wheel assembly is disposed on the mounting plate. The tensioning wheel assembly includes a tensioning wheel movably connected to the mounting plate. The tensioning wheel is located between the driving wheel and the driven wheel, and the tensioning wheel is located inside the sanding belt. The tensioning wheel abuts against the sanding belt along the outer side of the sanding belt. The tension wheel assembly further includes a tension swing arm rotatably connected to the mounting plate, and the rotation axis of the tension swing arm is parallel to the rotation axis of the drive wheel, and the tension wheel is connected to the tension swing arm; The tensioning assembly further includes a tensioning screw and a tensioning spring. One end of the tensioning spring is connected to the mounting plate, and the other end of the tensioning spring is connected to the tensioning screw. The tensioning screw is threadedly connected to the tensioning swing arm.

2. The belt sanding device according to claim 1, characterized in that, One end of the tensioning swing arm is rotatably connected to the mounting plate, and the other end of the tensioning swing arm is provided with a handle and an adjusting plate. The adjusting plate is perpendicular to the mounting plate and is threadedly connected to the tensioning screw.

3. The belt sanding device according to claim 2, characterized in that, It also includes a belt offset assembly, which includes a bolt and a swing element. The swing element includes a rotating plate and a connecting shaft perpendicularly connected to the rotating plate. The connecting shaft is coaxially connected to the tensioning wheel. The rotating plate is rotatably connected to the tensioning swing arm, and the rotation axis of the rotating plate is perpendicular to the rotation axis of the drive wheel. The bolt is threadedly connected to the tensioning swing arm, and the threaded end of the bolt abuts against the rotating plate.

4. The belt sanding device according to claim 3, characterized in that, It also includes a protective housing connected to the mounting plate, the grinding assembly being located inside the protective housing, the bottom of the protective housing having an opening, and the driven wheel and the sanding belt extending out of the opening.

5. The belt sanding device according to claim 4, characterized in that, The protective shell is also provided with a clearance opening, through which the bolt, the handle, and the adjusting plate extend out of the protective shell.

6. The belt sanding device according to claim 1, characterized in that, The mounting plate is provided with a first fixing sleeve and a second fixing sleeve, which are coaxially arranged.

7. The belt sanding device according to claim 1, characterized in that, It also includes a grinding motor mounted on the mounting plate, the rotating shaft of which is connected to the drive wheel.

8. A rail surface fine grinding machine, comprising a belt abrasive grinding device as described in any one of claims 1-7, characterized in that, The rail surface grinding machine is equipped with a connecting shaft, and the first fixed sleeve and the second fixed sleeve are both fixedly sleeved on the outside of the connecting shaft.

Images