Polishing head positioning mechanism for steel rail finishing and polishing equipment

Abstract

The utility model relates to the technical field of railway maintenance machinery, in particular to a grinding head positioning mechanism for steel rail finishing and grinding equipment, which is characterized in that every two grinding head positioning mechanisms form a group and are respectively arranged at the front end and the rear end of each row of grinding heads on the steel rail finishing and grinding equipment; the two grinding head positioning mechanisms each comprise a position adjusting support connected with the steel rail finishing and grinding equipment, a laser emitter is installed on the position adjusting support at one end, a laser detector is installed on the position adjusting support at the other end, and the preset operation position of the grinding head is located on a laser line emitted by the laser emitter. The positions of the laser transmitter and the laser detector are adjusted through the position adjusting support, then the preset operation position of each grinding head can be adjusted and confirmed, it is guaranteed that the distances between the grinding heads and the steel rail are the same during grinding work, and the grinding quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of railway maintenance machinery technology, specifically a grinding head positioning mechanism for rail finishing and grinding equipment. Background Technology

[0002] When railway rails are subjected to a certain degree of rolling pressure, their profile changes, the contact geometry between the wheelset and the rail deteriorates, impairing the smoothness of operation and the service life of the rails. Therefore, since the speed increase of my country's railways, the railway department has attached great importance to the profile grinding of railway rails. Existing technology, such as the intelligent rail trimming and grinding equipment described in application number CN202010150742.8, consists of a traveling vehicle, a profile detection system, a mileage system, a grinding swing arm mechanism, a microcontroller, a PLC control system, and an electrical control cabinet. After the vehicle enters the grinding work area, it detects the rail profile in real time during its movement. The PLC control system automatically adjusts the position and posture of each grinding swing arm mechanism according to the data provided by the microcontroller, and performs grinding according to the preset rail profile.

[0003] After long-term use, it has been found that existing rail trimming and grinding equipment has the following problems: After long-term use, wear of the grinding heads will cause changes in the thickness and diameter of each grinding head, resulting in uneven distances between the grinding heads and the rails during grinding operations. This leads to uneven rail grinding and cannot guarantee grinding quality. Therefore, a grinding head positioning mechanism for rail trimming and grinding equipment is needed to overcome the processing errors caused by wear of the grinding heads. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a grinding head positioning mechanism for rail trimming and grinding equipment that provides a unified setting standard for adjusting the position of each grinding head, ensuring that each grinding head is at the same distance from the rail during grinding operations, thereby guaranteeing grinding quality.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A grinding head positioning mechanism for rail finishing and grinding equipment is provided. The grinding head positioning mechanisms are arranged in pairs and are respectively set at the front and rear ends of each row of grinding heads on the rail finishing and grinding equipment. Each grinding head positioning mechanism includes an adjustment bracket connected to the rail finishing and grinding equipment. A laser emitter is installed on the adjustment bracket at one end, and a laser detector is installed on the adjustment bracket at the other end. The preset working position of the grinding head is located on the laser line emitted by the laser emitter.

[0007] Compared with the prior art, the present utility model adopting the above technical solution has the following outstanding features:

[0008] By adjusting the position of the laser emitter and laser detector using the adjustment bracket, the preset working position of each grinding head can be adjusted and confirmed, ensuring that the distance between each grinding head and the rail is the same during grinding, thus guaranteeing the grinding quality.

[0009] As a preferred embodiment, a further technical solution of this utility model is:

[0010] Preferably, the adjustment bracket includes a connecting seat connected to the rail trimming and grinding equipment. The connecting seat is provided with a first slide block, and the first slide block is provided with a first slide groove. The first slide groove is arranged longitudinally, and a first slider is slidably connected in the first slide groove. A laser emitter or laser detector is connected to the first slider. The connecting seat is also provided with a drive cylinder. The output end of the drive cylinder passes through the connecting seat and is connected to the first slider to drive the first slider to slide up and down along the first slide groove. The height of the laser emitter or laser detector can be adjusted by the drive cylinder. The first slide groove and the first slider play a limiting role to ensure that the slider slides up and down along the first slide groove.

[0011] Preferably, a first scale is longitudinally provided on the first slide block; used to adjust the height at which the laser emitter or laser detector is installed.

[0012] Preferably, the first slider is provided with a second slide block, the second slide block has a fan-shaped structure, and the second slide block is provided with a second slide groove, the second slide groove has an arc-shaped structure; it also includes a mounting base for mounting a laser emitter or laser detector, the mounting base is provided with a second slider adapted to the second slide groove, and the mounting base is slidably connected in the second slide groove through the second slider; the second slide block is provided with a drive motor, the output end of the drive motor is connected to an adjusting rod, and the other end of the adjusting rod is connected to the mounting base; the tilt angle of the laser emitter or laser detector can be adjusted by the drive motor, and the second slide groove and the second slider play a limiting role to ensure sliding along the second slide groove.

[0013] Preferably, an angle gauge is provided on the second slide block along the second slide groove; used to adjust the tilt angle for installing the laser emitter or laser detector.

[0014] Preferably, the mounting base is equipped with a tilt sensor for adjusting the tilt angle at which the laser emitter or laser detector is mounted. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation of the grinding head positioning mechanism in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the grinding head positioning mechanism in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the other side of the grinding head positioning mechanism in this embodiment of the utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Walking vehicle; 2. Connecting seat; 3. First slide block; 301. First slide groove; 4. Drive cylinder; 5. First slider; 6. Second slide block; 601. Second slide groove; 7. Drive motor; 8. Adjusting rod; 9. Second slider; 10. Mounting seat; 11. Laser emitter; 12. Laser detector; 13. Swing arm; 14. Grinding head. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The purpose of this description is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0020] like Figure 1 to Figure 3 As shown, the grinding head positioning mechanism for the rail trimming and grinding equipment provided in this embodiment is installed on the rail trimming and grinding equipment in the traveling vehicle 1. The grinding head 14 positioning mechanisms are arranged in pairs, and are respectively set at the front and rear ends of each row of grinding heads 14 on the rail trimming and grinding equipment. Both positioning mechanisms include adjustment brackets connected to the frame of the rail trimming and grinding equipment. A laser emitter 11 is installed on the adjustment bracket at one end, and a laser detector 12 for receiving the laser emitted by the laser emitter 11 is installed on the adjustment bracket at the other end. The preset working position of the grinding head 14 is located on the laser line emitted by the laser emitter 11.

[0021] In operation, the positions of the grinding heads 14 are adjusted one by one. The laser emitter 11 emits a laser beam that hits the laser detector 12. The first grinding head 14 is lowered by swinging the swing arm 13. After the grinding head 14 contacts the laser and blocks it, the laser detector 12 can no longer detect the laser signal, confirming this position as the preset working position. Then, the swing arm 13 swings to raise the grinding head 14 and lowers the second one. The same process is repeated for the first grinding head 14, adjusting the second grinding head 14 to the preset working position. This process is repeated to find the preset working positions of the grinding heads 14 on both sides. This allows for the adjustment and confirmation of the preset working position of each grinding head 14, ensuring that the distance between each grinding head 14 and the rail is the same during grinding, thus guaranteeing grinding quality.

[0022] Preferably, the positioning bracket includes a connecting seat 2 connected to the rail trimming and grinding equipment. A first slide 3 is provided on the connecting seat 2. A first slide groove 301 is provided on the first slide 3. The first slide groove 301 is arranged longitudinally. A first slider 5 is slidably connected in the first slide groove 301. A laser emitter 11 or a laser detector 12 is connected to the first slider 5. The connecting seat 2 is also provided with a driving cylinder 4. The output end of the driving cylinder 4 passes through the connecting seat 2 and is connected to the first slider 5 to drive the first slider 5 to slide up and down along the first slide groove 301.

[0023] When in use, when the output end of the drive cylinder 4 is activated, the first slider 5 slides up and down in the first slide groove 301 to adjust the height of the laser emitter 11 or the laser detector 12. The stroke of the drive cylinder 4 can be controlled by the main controller, and a first scale is set longitudinally on the first slide block 3 to facilitate the staff to check the height of the laser emitter 11 or the laser detector 12.

[0024] The first slider 5 is provided with a second slide block 6, which has a fan-shaped structure and a second slide groove 601, which has an arc-shaped structure. It also includes a mounting base 10 for mounting the laser emitter 11 or the laser detector 12. The mounting base 10 is provided with a second slider 9 that is adapted to the second slide groove 601. The mounting base 10 is slidably connected to the second slide groove 601 through the second slider 9. The second slide block 6 is provided with a drive motor 7. The output end of the drive motor 7 is connected to an adjusting rod 8. The other end of the adjusting rod 8 is connected to the mounting base 10. The adjusting rod 8 is set perpendicular to the output end of the drive motor.

[0025] In use, the output end of the drive motor 7 rotates, which in turn drives the adjusting rod 8 to swing. The swinging of the adjusting rod 8 in turn drives the laser emitter 11 or the laser detector 12 to swing, thereby adjusting the tilt angle. When the laser emitter 11 or the laser detector 12 swings, the second slide groove 601 and the second slider 9 play a limiting role. The drive motor 7 can be rotated by the main controller, thereby controlling the tilt angle of the laser emitter 11 or the laser detector 12. Preferably, an angle gauge is provided on the second slide block 6 along the second slide groove 601 to facilitate the operator to confirm the rotation angle.

[0026] In addition to setting an angle ruler along the second slide groove 601 on the second slide block 6, an inclination sensor can also be set on the mounting base 10; the inclination sensor directly feeds back the tilt angle to the main controller, replacing manual confirmation of the action, and can also work with the drive motor 7 to adjust the angle.

[0027] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A grinding head positioning mechanism for a rail dressing grinder, characterised in that: The polishing head positioning mechanism is arranged in two groups at the front and rear ends of each column of polishing heads of the rail finishing and polishing equipment, and each polishing head positioning mechanism comprises a position adjusting bracket connected with the rail finishing and polishing equipment, a laser emitter is arranged on the position adjusting bracket at one end, and a laser detector is arranged on the position adjusting bracket at the other end, and the preset working position of the polishing head is located on the laser line emitted by the laser emitter.

2. A grinding head positioning mechanism for a rail dressing grinder as claimed in claim 1, characterised in that: The position adjusting bracket comprises a connecting seat connected with the rail finishing and polishing equipment, a first sliding seat is arranged on the connecting seat, a first sliding groove is arranged on the first sliding seat, the first sliding groove is longitudinally arranged, a first sliding block is slidably connected in the first sliding groove, and the laser emitter or the laser detector is connected to the first sliding block; a driving cylinder is further arranged on the connecting seat, an output end of the driving cylinder is connected with the first sliding block through the connecting seat, so as to drive the first sliding block to slide up and down along the first sliding groove.

3. A grinding head positioning mechanism for a rail dressing grinder as claimed in claim 2, characterised in that: A first scale is longitudinally arranged on the first sliding seat.

4. The grinding head positioning mechanism for a rail dressing grinder as defined in claim 2, wherein: A second sliding seat is arranged on the first sliding block, the second sliding seat has a fan-shaped structure, a second sliding groove is arranged on the second sliding seat, and the second sliding groove has an arc-shaped structure. Further comprising a mounting seat for mounting the laser emitter or the laser detector, a second sliding block adapted to the second sliding groove is arranged on the mounting seat, and the mounting seat is slidably connected in the second sliding groove through the second sliding block. A driving motor is arranged on the second sliding seat, an adjusting rod is connected to an output end of the driving motor, and the other end of the adjusting rod is connected to the mounting seat.

5. A grinding head positioning mechanism for a rail finishing grinder as defined in claim 4 wherein: An angle scale is arranged on the second sliding seat along the second sliding groove.

6. A grinding head positioning mechanism for a rail finishing grinder as defined in claim 4 wherein: An inclination sensor is arranged on the mounting seat.

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