CN217253587U

CN217253587U - Laser remanufacturing and repairing system for wheel pair rim and tread of train

Info

Publication number: CN217253587U
Application number: CN202220352711.5U
Authority: CN
Inventors: 侯兴强; 成巍; 董世运; 李文龙; 高秋玲; 宋汝晖
Original assignee: Laser Institute of Shandong Academy of Science
Current assignee: Laser Institute of Shandong Academy of Science
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-08-23
Anticipated expiration: 2032-02-22

Abstract

The utility model relates to the technical field of laser remanufacturing and repairing, in particular to a laser remanufacturing and repairing system for a wheel pair rim and a tread of a train, which comprises a wheel pair repairing platform, wherein the wheel pair repairing platform is a bracket structure bearing a wheel pair, and one side of the wheel pair repairing platform is provided with a movable trolley; and the movable trolley is provided with a mechanical arm, a laser and a powder feeding system. The utility model has the advantages that: the wheel pair can be fixed by the distance between the two ends of the wheel pair machining platform, and the bearings at the two ends play a certain role in reducing friction force, so that the rotation of the wheel pair is assisted. The servo motor can rotate under the control of the control system, and wheel sets with different abrasion can be better repaired. The arm can be better satisfy the motion requirement when laser cladding, and the terminal arm is again installed to the laser cladding head simultaneously, can follow the arm motion, cladding rim and tread. The laser cladding head adopts coaxial powder feeding, and the material powder and the laser are on the same axis, so that the laser cladding head is better adapted to the change of the scanning direction.

Description

Laser remanufacturing and repairing system for wheel pair rim and tread of train

Technical Field

The utility model relates to a laser refabrication restoration technical field, in particular to train wheel pair rim and tread laser refabrication restoration system.

Background

The wheel set is one of the key parts in the running part of the train, bears great static load and dynamic load and is also subjected to vertical and horizontal acting forces of rail joints, turnouts, line irregularity and the like, so that the wheel set is an important part with concentrated stress and severe working conditions. Wheel wear and cracking are important factors in damage or failure of train wheelsets. At present, after a train wheel set is damaged or fails, the train wheel set is usually repaired in a rotary repairing and processing mode. For example, when the wheel is peeled off or worn and damaged, the wheel is repaired by a spin repair method. The service life of the repaired wheel is short due to the fact that the wheel rotary repair amount is large. And the wheel is seriously damaged by cracks and the like, and only a method of replacing a new part is adopted, so that the railway transportation cost is relatively high. Therefore, a novel wheel set repairing method with low cost and high quality is needed.

The laser cladding technology is characterized in that the surface of a coated substrate is provided with a selectable coating material in different filling modes, the surface of the substrate and a thin layer are simultaneously melted through laser irradiation, and a surface coating which has extremely low dilution degree and is metallurgically combined with the substrate material is formed after rapid solidification, so that the process methods of wear resistance, corrosion resistance, heat resistance, oxidation resistance, electrical property and the like of the surface of the substrate material are obviously improved.

Therefore, the laser remanufacturing and repairing system for the wheel pair rim and the tread of the train is designed to solve the problems.

Disclosure of Invention

The utility model discloses a remedy not enough among the prior art, provide a train wheel pair rim and tread laser reproduction repair system.

The utility model provides a train wheel set rim and tread laser refabrication repair system, includes wheel set repair platform, its characterized in that:

the wheel set repairing platform is a support structure bearing a wheel set, and a movable trolley is arranged on one side of the wheel set repairing platform; and the movable trolley is provided with a mechanical arm, a laser and a powder feeding system.

Further, for better realization the utility model discloses, platform is restoreed to wheel pair includes the mounting bracket, is fixed with servo motor on the mounting bracket, and servo motor's motor shaft passes through the drive wheel pair of motor gear and wheel pair gear and rotates, the both ends of wheel pair are passed through the bearing and are rotated and connect on the mounting bracket.

Furtherly, for better realization the utility model discloses, the one end accessible lead screw horizontal slip of mounting bracket is convenient for install the wheel pair in the bearing.

Further, for better realization the utility model discloses, the shaft of servo motor and wheel pair is through a gear and two can assemble half-gear connection, and servo motor's motor shaft fixed mounting motor gear, the wheel pair gear that two nested half-gears of epaxial detachable were assembled, and the rubber pad has been inlayed with shaft laminating department to the wheel pair gear.

Furtherly, for better realization the utility model discloses, the end of arm is installed laser cladding head, makes laser cladding head change position and direction through control system control arm.

Further, for better realization the utility model discloses, the laser output power of laser instrument is 3500w, and laser wavelength is 1064nm, and the focus is 150 mm.

The utility model has the advantages that:

the distance between the two ends of the wheel set machining platform can fix the wheel set, and the bearings at the two ends play a certain role in reducing friction force, so that the rotation of the wheel set is assisted. The servo motor can rotate under the control of the control system, and wheel sets with different abrasion can be better repaired. The six-degree-of-freedom mechanical arm adopted by the system can better meet the movement requirement during laser cladding, and meanwhile, the laser cladding head is arranged at the tail end of the mechanical arm and can move along with the mechanical arm to clad the rim and the tread. The laser cladding head adopts coaxial powder feeding, and the material powder and the laser are on the same axis, so that the laser cladding head is better adapted to the change of the scanning direction. Compared with turning, the physical and chemical properties of the surface of the wheel set after laser cladding, such as wear resistance, corrosion resistance, heat resistance, oxidation resistance, electrical characteristics and the like, are greatly enhanced, and the service life of the repaired wheel set can be prolonged. The repair device can automatically complete laser cladding through control of the control system, and the laser power, cladding powder and wheel set rotating speed can be adjusted, so that the repair device can better adapt to wheel sets with different wear degrees, and the repair quality is greatly improved.

Drawings

Fig. 1 is a laser cladding flow chart of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a side view of the wheelset machining platform of the present invention;

fig. 4 is a schematic view of a partial structure of the present invention;

fig. 5 is a gear diagram of the junction between the motor and the wheel axle of the present invention.

In the figure, the position of the upper end of the main shaft,

1. the device comprises a mechanical arm, 2, a laser, 3, a powder feeding system, 4, a movable trolley, 5, a wheel pair repairing platform, 6, a servo motor, 7, a motor gear, 8, a wheel pair gear, 9 and a bearing.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the product of the present invention is usually placed in when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 1-5 show a specific embodiment of the present invention, which is a laser remanufacturing and repairing system for wheel pair flanges and treads.

As shown in fig. 1, in the laser remanufacturing and repairing system for the wheel set rim and the tread of the train, the wheel set to be repaired is installed on a wheel set machining platform, a motor drives the wheel set to rotate at a set speed, a laser cladding head aligns to the wheel set rim or the tread to be repaired, and a control system controls a cladding system to carry out laser cladding according to set parameters.

As shown in fig. 2-5, the present embodiment is composed of a laser cladding head, a mechanical arm, a laser, a powder feeding system, a movable trolley, a wheel set repairing platform, a servo motor, a motor gear, a wheel set gear, and a bearing. The mechanical arm, the laser and the powder feeding system are arranged on the trolley, the wheel pair processing platform is the same as a fixed wheel pair, the motor is controlled by the control system to drive the wheel pairs to rotate through the two connecting gears, and the bearings at the two ends assist the wheel pairs to rotate.

Specifically, the wheel pair is preprocessed before cladding, the using condition of the wheel pair is detected, and the internal and external damage conditions of the wheel rim and the tread of the wheel pair are detected through ultrasonic flaw detection and dye flaw detection. If the interior of the wheel set is seriously damaged, the wheel set is directly scrapped and cannot be repaired. And under the condition that the wheel set can be repaired, polishing the wheel rim or the tread of the wheel set to be repaired, and removing peaks, burrs and other projections on the surfaces of the wheel rim and the tread until the surfaces are smooth.

After wheel set pretreatment is finished, a wheel set to be repaired is installed on a wheel set repairing machining table, firstly, one section of the machining table moves outwards through a lead screw to enlarge the distance between the two ends, after a wheel shaft is aligned to one end of the machining table, the movable other end moves inwards through the lead screw until the two ends of the wheel shaft are clamped, and the two ends of the machining table are fixed. Then install the rubber gasket on the shaft, and then fix two semicircle gears on the rubber gasket, two semicircle gear clamping fixation are a circular gear, and this gear teeth and the gear teeth meshing on the base motor can make the motor rotation drive gear rotate and then drive the wheel pair and rotate on the mounting bracket.

The arm will melt under control system's control that the covering head aims at the wheel to the tread (here also can be the rim, even the shaft all can), and the powder feeding device adopts coaxial powder feeding mode to send material powder to the material surface, and wherein the powder element composition in the powder feeding device is: 0.1% -0.17% of carbon, 3% -6% of manganese, 6% -9% of chromium, 0.17% -0.36% of silicon, 2.75% -3.15% of nickel, less than 0.03% of copper and the balance of iron, simultaneously, the laser emitted by the laser is transmitted to a cladding head through an optical fiber, the output power of the laser is 3500w, the laser wavelength is 1064nm, the focal length is 150mm, the defocusing amount is adjusted, a processing point is located at a position 5mm below a focus, the diameter of a light spot is 5mm, the mixed material is cladded on the surface of a wheel set tread by the laser, the mechanical arm drives the laser cladding head to move along the direction of the wheel set (if the tread rim is cladded, the laser cladding head moves up and down), and meanwhile, the servo motor is controlled by a control system to rotate at a certain rotating speed, so that the laser remanufacturing of the whole wheel set can be completed. After the whole process is finished, detecting the cladding effect of the wheel set, and if the wheel set is qualified, continuing to use the wheel set; if not, re-detecting and cladding again until qualified.

Finally, the above description is only a preferred embodiment and not intended to limit the scope of the present invention, and any equivalent embodiments may be changed or modified by those skilled in the art to apply the same changes or modifications to the above disclosed technical content to other fields, but all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence still belong to the technical scope of the present invention.

Claims

1. The utility model provides a train wheel set rim and tread laser refabrication repair system, includes wheel set repair platform (5), its characterized in that:

the wheel set repairing platform (5) is a support structure bearing wheel sets, and one side of the wheel set repairing platform (5) is provided with a movable trolley (4); the movable trolley (4) is provided with a mechanical arm (1), a laser (2) and a powder feeding system (3).

2. The train wheel set rim and tread laser remanufacturing and repairing system according to claim 1, wherein:

platform (5) are restoreed to wheel pair includes the mounting bracket, is fixed with servo motor (6) on the mounting bracket, and the motor shaft of servo motor (6) passes through motor gear (7) and the drive wheel pair of wheel pair gear (8) and rotates, the both ends of wheel pair are passed through bearing (9) and are rotated the connection on the mounting bracket.

3. The train wheel set rim and tread laser remanufacturing and repairing system according to claim 2, wherein:

one end of the mounting rack can slide left and right through the screw rod, so that the wheel pair is conveniently mounted in the bearing (9).

4. The train wheel set rim and tread laser remanufacturing and repairing system according to claim 2, wherein:

the servo motor (6) is connected with the wheel shaft of the wheel pair through a gear and two assembled half gears, a motor gear (7) is fixedly installed on the motor shaft of the servo motor (6), the wheel pair gear (8) assembled by the two half gears is detachably nested on the wheel shaft, and a rubber pad is embedded at the joint of the wheel pair gear (8) and the wheel shaft.

5. The train wheel set rim and tread laser remanufacturing and repairing system according to claim 1, wherein:

the tail end of the mechanical arm (1) is provided with a laser cladding head, and the mechanical arm (1) is controlled by a control system to change the position and direction of the laser cladding head.

6. The train wheel set rim and tread laser remanufacturing and repairing system according to claim 1, wherein:

the laser output power of the laser (2) is 3500w, the laser wavelength is 1064nm, and the focal length is 150 mm.