CN106217277A - Flexible abrasive grinding wheel, the grinding attachment with this emery wheel and rail milling car - Google Patents

Abstract

The invention relates to the technical field of mechanical manufacturing equipment, in particular to a flexible grinding wheel for forming the outer contour of a rail, a grinding device with the grinding wheel, and a rail milling and grinding vehicle. The flexible grinding wheel includes a flange and a plurality of shaped grinding wheel blocks, the plurality of shaped grinding wheel blocks are evenly distributed on the outer circumference of the flange, and each shaped grinding wheel block is located on the same rotation plane as the flange, each The formed grinding wheel blocks are respectively connected to the flange plate through the reset mechanism, so that each formed grinding wheel block can move along the direction perpendicular to the axis of the flange plate. When the flexible grinding wheel is used for grinding, it can effectively avoid the Insufficiency and the existence of rail joints lead to the large deformation of the rails when the wheels pass by, which affects the grinding discontinuity, and the grinding amount is too large or too small. Even under road conditions such as poor smoothness and rail joints, it can also meet the quality requirements for rail profile grinding.

Description

Flexible grinding wheel, grinding device with the grinding wheel, and rail milling and grinding car

technical field

The invention relates to the technical field of mechanical manufacturing equipment, in particular to a flexible grinding wheel for forming the outer contour of a rail, a grinding device with the grinding wheel, and a rail milling and grinding vehicle.

Background technique

The development of the trend of high-speed and heavy-duty railways has aggravated the deterioration of the line rails, seriously affecting the service life of the rails and the safety and stability of train operation. In recent years, rail milling and grinding vehicles have gradually become the main equipment for track repair, and the grinding device is the core working part of rail milling and grinding vehicles, and its performance directly determines the effect of milling and grinding vehicles on rail repair.

For traditional rail milling and grinding vehicles, the grinding device adopts a whole-piece grinding wheel structure, and the grinding amount of the grinding wheel is between 0.05mm and 0.2mm each time. In industrial and mining operations such as rail joints, the upper and lower deformation of the rail is large, and the traditional grinding wheel is used for grinding, which is prone to excessive or too small grinding, which cannot meet the quality requirements of rail outer profile grinding.

Contents of the invention

(1) Technical problems to be solved

The technical problem to be solved by the present invention is to provide a flexible grinding wheel, a grinding device with the grinding wheel, and a rail milling and grinding car, even if the track sleepers are not solid, the rails are severely worn, the smoothness is poor, and there are rail joints, etc. Under road conditions, it can also meet the quality requirements of rail profile grinding.

(2) Technical solution

In order to solve the above technical problems, the present invention provides a flexible grinding wheel, which is characterized in that it includes a flange and a plurality of shaped grinding wheel blocks, and the plurality of shaped grinding wheel blocks are uniformly distributed on the outer circumference of the flange above, and each of the formed grinding wheel blocks is located on the same rotation plane as the flange; each of the formed grinding wheel blocks is connected to the flange through a reset mechanism, so that each of the formed grinding wheel blocks can Move in a direction perpendicular to the axis of the flange.

Further, the return mechanism includes a return spring, and each of the formed grinding wheel blocks is connected to the flange through the return spring.

Further, the reset mechanism includes a reset pressure block, and each of the shaped grinding wheel blocks is respectively connected to a return spring through a reset pressure block.

Further, a plurality of guide grooves are evenly distributed on the outer circumference of the flange, and each set of reset mechanisms is correspondingly arranged in each of the guide grooves, so that each of the formed grinding wheel blocks can The direction of the axis of the flange moves.

Further, a cover plate is also included, and the cover plate is fixed on at least one side of the flange.

Further, the cover plate and the flange are fixedly connected by screws.

Further, the diameter of the flexible grinding wheel is 600mm-800mm.

Further, the number of the shaped grinding wheel blocks is 8-16.

The present invention also provides a grinding device, comprising the above-mentioned flexible grinding wheel.

The present invention also provides a rail milling and grinding vehicle, including the above-mentioned grinding device.

(3) Beneficial effects

The above-mentioned technical solution of the present invention has the following beneficial effects: the flexible grinding wheel of this embodiment includes a flange and a plurality of shaped grinding wheel blocks, the plurality of shaped grinding wheel blocks are evenly distributed on the outer circumference of the flange, and each shaped grinding wheel The blocks are located on the same rotation plane as the flange, and each formed grinding wheel block is connected to the flange through a reset mechanism, so that each formed grinding wheel block can move in a direction perpendicular to the axis of the flange. Each formed grinding wheel block is movably connected to the outside of the flange, so that it forms a flexible grinding disc. When the flexible grinding wheel is used for grinding, it can effectively avoid the wheel The large deformation of the upper and lower sides of the rail will affect the grinding discontinuity, and the grinding amount will be too large or too small, so as to ensure that even under the road conditions such as unsolid track sleepers, serious rail wear, poor smoothness, and rail joints, etc. , It can also meet the quality requirements of rail profile grinding.

Description of drawings

Fig. 1 is the structural representation of the flexible grinding wheel of the embodiment of the present invention;

Fig. 2 is the front view of the flexible grinding wheel of the embodiment of the present invention;

FIG. 3 is a cross-sectional view along the B direction of FIG. 2 .

Among them, 1. flange plate; 2. forming grinding wheel block; 3. reset pressing block; 4. return spring; 5. cover plate; 6. reset mechanism.

detailed description

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

In the description of the present invention, unless otherwise specified, "plurality" means two or more. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" etc. is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the present invention.

As shown in FIG. 1 , the diameter of the flexible grinding wheel provided by this embodiment is preferably 600mm-800mm, so as to be suitable for rail grinding conditions. The flexible grinding wheel includes a flange 1 and a plurality of shaped grinding wheel blocks 2, the plurality of shaped grinding wheel blocks 2 are evenly distributed on the outer circumference of the flange 1, and each shaped grinding wheel block 2 is located at the same position as the flange 1. on the rotating plane to ensure that the rotation stability of the grinding wheel is high enough during the grinding process; each forming grinding wheel block 2 is connected to the flange plate 1 through a reset mechanism 6, so that each forming grinding wheel block 2 can move along a direction perpendicular to the The direction of the axis of the flange plate 1 moves, and the reset mechanism 6 is used to make each formed grinding wheel block 2 movably connected to the outside of the flange plate 1, so that it forms a flexible grinding plate. When the rail contacts the grinding wheel, the formed grinding wheel block 2 The elastic movement of the shape ensures the close contact between the grinding wheel and the rail, so as to effectively avoid the large deformation of the rail up and down when the wheel passes by due to the inadequacy of the rail sleepers and the existence of the rail joints, which will affect the discontinuous grinding and the excessive grinding. The problem of large or too small, so as to ensure that the quality requirements of rail profile grinding can be met even under road conditions such as unsolid track sleepers, severe rail wear, poor smoothness, and rail joints.

In order to ensure that the elastic movement of each formed grinding wheel block 2 is more reliable, and can be elastically compressed and accurately reset according to the shape of the rail during grinding, the reset mechanism 6 preferably includes a return spring 4, and each formed grinding wheel block 2 passes through the return spring 4 respectively. It is connected with the flange 1; in addition to using the return spring 4, other existing mechanisms that can provide elastic compression and return for the formed grinding wheel block 2, such as hydraulic pistons, can also be used.

In order to ensure that the formed grinding wheel block 2 performs elastic compression and reset movement, the return spring 4 can withstand the formed grinding wheel block 2 all the time. The preferred reset mechanism 6 also includes a reset pressing block 3, and each forming grinding wheel block 2 passes through the reset pressing block 3 and the pressing block 3 respectively. The return spring 4 is connected, and the return spring 4 is used to press the reset block, so as to ensure that the return spring 4 always bears on the formed grinding wheel block 2, ensuring that the flange 1 and the formed grinding wheel block 2 are directly and reliably connected.

In order to ensure that each forming grinding wheel block 2 can move elastically on the outer circumference of the flange 1 through a reset mechanism 6 respectively, and its movement direction is perpendicular to the axial direction of the flange 1, preferably on the outer circumference of the flange 1 A plurality of guide grooves are evenly distributed, and each group of reset mechanisms 6 is correspondingly arranged in each guide groove, so that each forming grinding wheel block 2 can move along a direction perpendicular to the axis of the flange 1; it also includes a cover plate 5, a cover The plate 5 is fixed on at least one side of the flange 1, preferably the cover plate 5 and the flange 1 are fixedly connected by a screw to ensure that the cover plate 5 is reliably installed on the flange plate 1, and the cover plate 5 is used to make the guide groove The internal reset mechanism 6 can only move back and forth in the guide groove, so as to ensure that the formed grinding wheel block 2 is always in the axial movement perpendicular to the flange 1, and further ensure that all the formed grinding wheel blocks 2 are in the same arc when moving On the shaped rotation plane, during the start-up process of the grinding wheel rotation, avoid damage to the shaped grinding wheel block 2 caused by centrifugal force.

In this embodiment, the number of formed grinding wheel blocks 2 is multiple, preferably 8 to 16, and more preferably 12, so that the formed grinding wheel blocks 2 can be reasonably closely contacted with the outer edge of the rail, thereby facilitating grinding; The outer circumference of the disc 1 is provided with a plurality of guide grooves, the number of the guide grooves is equal to the number of the formed grinding wheel blocks 2, and the length direction of the guide grooves is arranged in a divergent manner along the axial direction perpendicular to the flange 1, each A return spring 4 is correspondingly connected in the guide groove, and the pop-up end of each return spring 4 is connected by a return pressure block 3 and withstands a formed grinding wheel block 2; a cover plate 5 is fixed on one side of the flange 1 , The side surfaces of each guide groove are closed by the cover plate 5, so that the return spring 4 in each guide groove can only move forward and backward along the length direction of the guide groove.

To sum up, the flexible grinding wheel of this embodiment includes a flange 1 and a plurality of shaped grinding wheel blocks 2, the plurality of shaped grinding wheel blocks 2 are evenly distributed on the outer circumference of the flange 1, and each shaped grinding wheel block 2 is connected to The flange plate 1 is located on the same rotation plane, and each formed grinding wheel block 2 is connected to the flange plate 1 through a reset mechanism 6, so that each formed grinding wheel block 2 can move in a direction perpendicular to the axis of the flange plate 1, The resetting mechanism 6 is used to make each forming grinding wheel block 2 movably connected to the outside of the flange 1, so that it forms a flexible grinding disc. The existence of gaps will lead to the large deformation of the rail when the wheel passes by, which will affect the grinding discontinuity, and the problem that the grinding amount will be too large or too small, so as to ensure that even if the line sleepers are not solid, the rail wear is serious, the smoothness is poor and there are Under road conditions such as rail joints, it can also meet the quality requirements of rail profile grinding.

The embodiments of the present invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications as are suited to the particular use.

Claims (10)

1. a flexible abrasive grinding wheel, it is characterised in that include ring flange and multiple forming grinding wheel block, multiple described forming grinding wheels Block is distributed on the excircle of described ring flange, and each described forming grinding wheel block is all positioned at same rotational plane with ring flange On；Each described forming grinding wheel block is connected with described ring flange by resetting-mechanism respectively, so that each described forming grinding wheel block All can move along the direction being perpendicular to described ring flange axis.

Flexible abrasive grinding wheel the most according to claim 1, it is characterised in that described resetting-mechanism includes back-moving spring, often Individual described forming grinding wheel block is connected with ring flange by back-moving spring respectively.

Flexible abrasive grinding wheel the most according to claim 2, it is characterised in that described resetting-mechanism includes reset briquetting, often Individual described forming grinding wheel block is connected with back-moving spring by reset briquetting respectively.

4. according to the flexible abrasive grinding wheel according to any one of claim 1-3, it is characterised in that the excircle of described ring flange On be evenly equipped with multiple gathering sill, each organize described resetting-mechanism and be correspondingly arranged in each described gathering sill, so that each described one-tenth Abrasive wheel block all can move along the direction being perpendicular to described ring flange axis.

5. according to the flexible abrasive grinding wheel according to any one of claim 1-3, it is characterised in that also include cover plate, described lid Plate is fixed at least side of described ring flange.

Flexible abrasive grinding wheel the most according to claim 5, it is characterised in that pass through screw rod between described cover plate and ring flange Fixing connection.

7. according to the flexible abrasive grinding wheel according to any one of claim 1-3, it is characterised in that this flexibility abrasive grinding wheel straight Footpath is 600mm～800mm.

8. according to the flexible abrasive grinding wheel according to any one of claim 1-3, it is characterised in that the number of described forming grinding wheel block Amount is 8～16.

9. a grinding attachment, it is characterised in that include the flexible abrasive grinding wheel as according to any one of claim 1-8.

10. a rail milling car, it is characterised in that include grinding attachment as claimed in claim 9.