Polishing device for polishing lower jaw part of railhead

Abstract

The utility model provides a polishing device for polishing a lower jaw part of a railhead, which comprises a rack for connecting all parts; the polishing driving mechanism is movably connected to the rack; the polishing wheel is connected with the driving end of the polishing driving mechanism; the up-and-down moving mechanism is connected with the polishing driving mechanism and used for adjusting the up-and-down position of the polishing wheel; and the angle adjusting mechanism is connected with the grinding driving mechanism and used for adjusting the angle position of the grinding wheel. The polishing device for polishing the lower jaw part of the railhead can polish damage and fat edges of the lower jaw part of the railhead, stress of the railhead is reduced, safety of driving is guaranteed, and the service life of a steel rail is prolonged. And the height and angle of the polishing head can be adjusted through the up-down moving mechanism and the angle adjusting mechanism, so that polishing is more accurate.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the field of rail grinder, concretely relates to the polishing device for polishing rail head lower jaw part. BACKGROUND

[0002] With the development of railway transportation to high speed and heavy load, the wheel-rail contact stress on the rail surface is increasing, which leads to the rail head lower jaw part (i.e. the transition area of rail surface and rail waist) being prone to fish scale-like peeling and fat edge damage. According to statistics, the occurrence rate of rail lower jaw fat edge on heavy load line in China is as high as 72%, and this problem is more prominent on subway lines due to small radius curves. Practice shows that the rail head stress value can be increased by 37% if the lower jaw fat edge is not treated in time, which significantly shortens the service life of the rail.

[0003] The existing track maintenance technology mainly polishes the rail head side and top surface, such as CN202120880930.6 discloses a rail composite polishing device, which comprises an envelope polishing unit and a profiling polishing unit arranged below a rail polishing car. The envelope polishing unit comprises a first polishing grinding wheel for envelope polishing of the rail surface, and the first polishing grinding wheel adopts a cup-shaped grinding wheel. The profiling polishing unit comprises a second polishing grinding wheel for profile grinding of the rail surface, and the second polishing grinding wheel adopts a profiling grinding wheel. The utility model can solve the technical problems that the existing polishing device cannot simultaneously meet the requirements of large polishing and grinding amount, wide polishing angle range, high operation efficiency, good operation passability and the like. However, this technical solution can only polish the rail surface and the shoulder parts on both sides of the rail head. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the utility model provides a polishing device for polishing the rail head lower jaw part, which comprises:

[0005] A rack is used to connect various components;

[0006] A polishing driving mechanism is movably connected to the rack;

[0007] A polishing wheel is connected to the driving end of the polishing driving mechanism;

[0008] An up-down moving mechanism is connected to the polishing driving mechanism and is used to adjust the up-down position of the polishing wheel;

[0009] An angle adjusting mechanism is connected to the polishing driving mechanism and is used to adjust the angle position of the polishing wheel.

[0010] As an optional solution of the utility model technical scheme, the polishing wheel is a grinding wheel or a milling cutter disc.

[0011] As an optional solution of the utility model technical scheme, the polishing wheel is detachably connected to the driving end of the polishing driving mechanism.

[0012] As an optional scheme of the utility model technical scheme, the connecting frame is connected with the rack;

[0013] The support frame is used for supporting the polishing driving mechanism, and the support frame is connected with the connecting frame in an up-down sliding mode;

[0014] The screw rod assembly is connected with the support frame in a threaded mode.

[0015] As an optional scheme of the utility model technical scheme, one side of the connecting frame is connected with the rack in a rotating mode, and the other side is connected with the angle adjusting mechanism, and the angle adjusting mechanism comprises:

[0016] The worm wheel is connected with the connecting frame through the connecting shaft;

[0017] The worm is connected with the worm wheel in an engaging mode.

[0018] As an optional scheme of the utility model technical scheme, the angle adjusting mechanism further comprises:

[0019] The angle marking mechanism is provided with an arc-shaped groove, and is provided with an angle mark on the arc-shaped groove;

[0020] The locking mechanism is fixedly arranged relative to the rack, and a locking part of the locking mechanism is connected with the arc-shaped groove of the angle marking mechanism in a sliding mode.

[0021] As an optional scheme of the utility model technical scheme, the outer side of the polishing wheel is provided with a protective cover.

[0022] As an optional scheme of the utility model technical scheme, the protective cover is provided with an adjusting groove, the outer side of the driving end of the polishing driving mechanism is provided with a fixing shell, and the fixing shell is connected with an adjusting screw relative to the position of the adjusting groove.

[0023] As an optional scheme of the utility model technical scheme, the rack is connected with a traveling wheel.

[0024] The utility model has the advantages of:

[0025] The polishing device for polishing the rail head lower jaw part can polish the damage and the fat edge of the rail head lower jaw part, reduces the stress of the rail head, guarantees the safety of the train running and improves the service life of the steel rail; the height and the angle of the polishing head can be adjusted through the up-down moving mechanism and the angle adjusting mechanism, so that the polishing is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic view of the utility model embodiment;

[0027] Figure 2is a structure diagram of another view angle after removing the steel rail and the angle adjusting mechanism shell.

[0028] Figure 3 is Figure 2 structure diagram of another view angle after removing the steel rail and the angle adjusting mechanism shell.

[0029] wherein:

[0030] 100 - rack;

[0031] 10 - polishing drive mechanism;

[0032] 20 - polishing wheel;

[0033] 30 - up and down moving mechanism; 31 - connecting frame; 32 - supporting frame; 33 - screw assembly;

[0034] 40 - angle adjusting mechanism; 41 - worm wheel; 42 - worm; 43 - angle identification mechanism; 44 - locking mechanism;

[0035] 50 - protective cover; 51 - adjusting groove

[0036] 60 - fixed shell;

[0037] 70 - walking wheel. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0039] As Figures 1-2 , the polishing device for polishing the rail head lower jaw part, comprising: rack 100, polishing drive mechanism 10, polishing wheel 20, up and down moving mechanism 30 and angle adjusting mechanism 40. Wherein: the rack 100 is used for connecting each component, the rack 100 is connected with walking wheel 70, and the movement of the polishing device is facilitated; the polishing drive mechanism 10 is movably connected on the rack 100; the polishing wheel 20 is connected with the driving end of the polishing drive mechanism 10; the up and down moving mechanism 30 is connected with the polishing drive mechanism 10, and is used for adjusting the up and down position of the polishing wheel 20; the angle adjusting mechanism 40 is connected with the polishing drive mechanism 10, and is used for adjusting the angle position of the polishing wheel 20.

[0040] Specifically, the grinding wheel 20 can be a milling cutter, the grinding drive mechanism 10 is a motor drive mechanism, the grinding wheel 20 is detachably connected with the grinding drive mechanism 10, and when the track surface and the shoulder need to be ground, the grinding wheel can be replaced, and then the height and angle of the grinding wheel can be adjusted. The outer side of the grinding wheel 20 is provided with a protective cover 50, the protective cover 50 is provided with an adjusting groove 51, the outer side of the driving end of the grinding drive mechanism 10 is provided with a fixed shell 60, and the position of the fixed shell 60 relative to the adjusting groove 51 is connected with an adjusting screw. When the protective cover 50 needs to be adjusted, the adjusting screw is loosened, the adjusting groove 51 on the protective cover 50 slides along the adjusting screw, and after reaching the appropriate position, the adjusting screw is tightened for fixation. When the protective cover 50 needs to be removed, the adjusting screw is only needed to be removed.

[0041] The up-down moving mechanism 30 comprises a connecting frame 31, a supporting frame 32 and a screw rod assembly 32. The connecting frame 31 is connected with the rack 100. The supporting frame 32 is used for supporting the grinding drive mechanism 10, and is in sliding connection with the connecting frame 31. Specifically, a sliding groove can be arranged on the connecting frame 31, and a sliding block is arranged on the supporting frame 32 and in sliding connection with the sliding groove. The screw rod assembly 33 is in threaded connection with the supporting frame 32. By rotating the screw rod assembly 32, the supporting frame 32 with the grinding drive mechanism 10 and the grinding wheel 20 can be moved up and down. The power for rotating the screw rod assembly 33 can be artificial rotation or driving by a motor.

[0042] As shown in FIG. 1, Figure 3 One side of the connecting frame 31 is in rotary connection with the rack 100, and the other side is connected with the angle adjusting mechanism 40. The angle adjusting mechanism 40 comprises a worm wheel 41, a worm 42, an angle marking mechanism 43 and a locking mechanism 44. The center of the worm wheel 41 is connected with the connecting frame 31 through a connecting shaft. The worm 42 is in meshing connection with the worm wheel 41. By rotating the worm 42, the worm wheel 41 is rotated, and the connecting frame 31 is driven to rotate. The power for rotating the worm 42 can be artificial rotation or driving by a motor. The angle marking mechanism 43 is provided with an arc-shaped groove, and is provided with an angle mark thereon. The locking mechanism 44 is fixedly arranged relative to the rack 100. A locking portion of the locking mechanism 44 is in sliding connection with the arc-shaped groove of the angle marking mechanism 43. When the angle is adjusted to the required angle, the locking portion is engaged with the angle marking mechanism to be locked.

[0043] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A grinding device for grinding a rail head underjaw area, characterized by, The polishing device comprises: a frame (100) for connecting various components; a polishing drive mechanism (10) movably connected to the frame (100); a polishing wheel (20) connected to the driving end of the polishing drive mechanism (10); an up-down moving mechanism (30) connected to the polishing drive mechanism (10) for adjusting the up-down position of the polishing wheel (20); an angle adjusting mechanism (40) connected to the polishing drive mechanism (10) for adjusting the angle position of the polishing wheel (20).

2. The grinding device for grinding the rail head jaw portion according to claim 1, characterized by, The polishing wheel (20) is a grinding wheel or a milling cutter disc.

3. The grinding device for grinding the rail head jaw portion according to claim 1, characterized by, The polishing wheel (20) is detachably connected to the driving end of the polishing drive mechanism (10).

4. The grinding device for grinding the rail head jaw portion according to claim 1, characterized by, The up-down moving mechanism (30) comprises: a connecting frame (31) connected to the frame (100); a support frame (32) for supporting the polishing drive mechanism (10), the support frame (32) being slidably connected to the connecting frame (31); a screw rod assembly (33) threadedly connected to the support frame (32).

5. The grinding device for grinding the rail head jaw portion according to claim 4, characterized by, One side of the connecting frame (31) is rotatably connected to the frame (100), and the other side is connected to the angle adjusting mechanism (40), which comprises: a worm gear (41) with its center connected to the connecting frame (31) through a connecting shaft; a worm (42) meshingly connected to the worm gear (41).

6. The grinding device for grinding the rail head jaw portion according to claim 5, characterized by The angle adjusting mechanism (40) further comprises: an angle marking mechanism (43) provided with an arc-shaped slot and angle markings thereon; a locking mechanism (44) fixedly arranged relative to the frame (100), with its locking part slidably connected to the arc-shaped slot of the angle marking mechanism (43).

7. The grinding device for grinding the rail head jaw portion according to claim 1, characterized by, The outer side of the polishing wheel (20) is provided with a protective cover (50).

8. The grinding device for grinding the rail head jaw portion according to claim 7, characterized by, The protective cover (50) is provided with an adjusting slot (51), and the outer side of the driving end of the polishing drive mechanism (10) is provided with a fixing shell (60), which is connected to the adjusting screw relative to the position of the adjusting slot (51).

9. The grinding device for grinding the rail head jaw portion according to claim 1, characterized by, The frame (100) is connected with a walking wheel (70).

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