CN211547120U - Steel rail online milling device capable of adjusting angle of milling head - Google Patents

Abstract

The utility model relates to a can adjust rail online milling process device of milling head angle, including the toolframe, the toolframe is connected and is milled drive arrangement, the milling head is still equipped with to the toolframe lower extreme, the toolframe right side is passed through the ring flange and is fixed in the rotation drive axle, the rotation drive axle is installed in the axle box, install the turbine on the rotation drive axle, angle adjustment servo driver is equipped with at axle box top, the worm through the installation of angle adjustment servo driver rotation drive output, it is rotatory around the vertical revolving axle parallel with the rail extending direction to drive turbine and rotation drive axle through the rotation of worm, with the adjustment of the real-time angle of realization milling head. The utility model discloses can adjust milling head angle in real time, can be rotatory with the milling head to side or top surface in order to make things convenient for the maintenance.

Description

Steel rail online milling device capable of adjusting angle of milling head

Technical Field

The utility model relates to a railway maintenance of equipment especially relates to a can adjust rail on-line milling process device of milling head angle.

Background

In recent years, subway rail traffic in China develops rapidly, and the problem of surface damage of steel rails begins to be more and more prominent along with increase of transportation capacity and improvement of running speed, wherein common damage comprises rolling contact fatigue cracks of the steel rails, corrugation and side grinding of the steel rails at the upper ends of curves. If the surface damage of the steel rail cannot be timely and effectively repaired, the driving safety and the service life of the steel rail are seriously influenced.

In order to ensure the safety, stability and comfort of train operation, improve the contact relationship between the wheel and the rail, reduce the noise of train operation, prolong the service life of the rail and slow down the expansion speed of the surface damage of the rail, the surface damage of the rail must be eliminated by adopting a quick and efficient movable online renovation technology, and the good outline and smoothness of the rail are recovered.

At present, the on-line steel rail renovation technology comprises three types of steel rail grinding, steel rail milling and grinding and steel rail milling.

The prior steel rail online milling operation vehicle (called rail milling vehicle for short) comprises two processes of rough milling and finish milling, wherein a circumferential milling technology is firstly adopted to longitudinally mill the surface of a steel rail to complete the rough milling process, and then an end face milling technology is adopted to finish milling the surface of the steel rail after rough milling, so that the rail milling vehicle has high operation efficiency, is suitable for eliminating fat edges or plastic deformation of a gauge angle and an outer side angle, has less operation preparation work, does not need to remove equipment beside the rail, and has small pollution to air and noise in the rail milling operation compared with a steel rail grinding vehicle.

However, in the finish milling device adopted by the prior rail milling vehicle, because an end face milling mode is adopted, and the cutter head is arranged at the lower part of the vehicle body, great inconvenience is caused to the replacement and maintenance of the cutter head due to the influence of space; in addition, because the angle of the milling head can not be adjusted during milling operation, asymmetric and personalized milling can not be realized, and the current finish milling device adopts a hydraulic oil cylinder to perform displacement positioning control, so that the positioning precision is low.

In summary, there is an urgent need for an online rail milling device capable of adjusting the angle of a milling head, which not only saves the maintenance space by the rotation of the milling head, but also can make up for the technical defects of the existing finish milling device; the steel rail multi-angle individualized milling device has the advantages that the steel rail multi-angle individualized milling can be realized, the steel rail damage or defect can be completely repaired by completely adopting a mode of combining rough milling and finish milling, and the potential advantage that a plurality of sets of finish milling devices are adopted to replace rough milling working devices is achieved.

The Chinese patent with the patent number ZL201510283194.5 discloses a finish milling device of a movable steel rail milling vehicle, which comprises at least one cutter frame (1), wherein the cutter frame (1) is connected with a milling driving device (2), the lower end of the cutter frame (1) is also provided with a milling head (3), the output end of the milling driving device (2) is connected with a driving shaft of the milling head (3) through a mechanical transmission device, one side of the cutter frame (1) is also connected with a hydraulic driving vertical moving and positioning device (4) and a group of electric horizontal moving and positioning devices (5), each group of hydraulic driving vertical moving and positioning devices (4) is connected with the electric horizontal moving and positioning device (5), and the electric horizontal moving and positioning devices (5) are used for positioning the horizontal position of a milling cutter. The finish milling device of the movable steel rail milling vehicle provided by the invention not only can be used for carrying out secondary fine rail shape trimming on a roughly milled steel rail, has good repairing effect and high operating efficiency, does not use a polishing mode to carry out secondary trimming on the steel rail, and has small environmental pollution, but also is convenient for replacing the milling cutter frame and the blades thereof because the cutter frame can rotate around the rotating shaft. However, the angle of the milling head cannot be adjusted during the milling operation, and the asymmetric and personalized milling processing cannot be realized. Thus, improvements are still needed.

Chinese patent No. ZL201180006924.7 discloses a device (1) for reworking a running surface (17) of a rail head (2) by machining, comprising a frame (5) guided along the rail head (2), wherein two machining tools are supported on both sides of the rail head (2). Two machining tools can be rotationally driven in opposite directions and can be placed against a running surface (17) at the end faces of the machining tools. In order to create advantageous machining conditions, the machining tool is designed as a face milling cutter (11), the rotational axis (12) of which extends on a common plane (13) and the cutting areas of which overlap one another transversely to the longitudinal direction of the rail head (2), and the two face milling cutters (11) are connected to a common rotary drive (9) by means of a transmission gearbox (10). However, the angle of the milling head cannot be adjusted during the milling operation, and the asymmetric and personalized milling processing cannot be realized. Thus, improvements are still needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can adjust the online milling process device of rail of milling head angle, mainly used for accomplishing the milling rail car finish milling this process, be used for making up domestic technological blank, the cutter is changed more conveniently, namely rotate the milling head to the angle of being convenient for operate when needing to carry on the maintenance of milling cutter dish and change, if rotate 90 degrees the cutter dish towards the automobile body outside, thus is convenient for operate; milling at different angles can be realized, and the milling operation quality is better.

The utility model discloses well regulation: the direction parallel to the steel rail is longitudinal, the direction vertical to the steel rail is transverse, and the gravity direction is vertical; one side of the operation direction of the mobile subway steel rail on-line milling vehicle is right, and the other side is left.

The utility model discloses a can adjust rail on-line milling process device of milling head angle, including at least one toolframe, this toolframe connects and mills drive arrangement, the toolframe lower extreme still is equipped with the milling head, the output of milling drive arrangement passes through mechanical transmission and the drive shaft of milling head is connected, in order to drive the rotation of the milling cutter dish on the milling head; one side of the cutter frame is also connected to a rotary driving shaft for adjusting the angle through a flange plate, and the integral rotation of the cutter frame is realized through the rotation of the rotary driving shaft, so that the angle adjustment of the milling head is realized; the rotary driving shaft for realizing the angle adjustment of the milling head rotates around a longitudinal rotary central shaft in the parallel direction of the steel rail; the rotary driving shaft for adjusting the angle is installed in a shaft box body; the shaft box body can be driven by a hydraulic oil cylinder to move vertically to realize the actions of cutter lowering and cutter retracting; the shaft box body is also provided with a positioning sliding shoe; the positioning sliding shoe realizes vertical displacement through a transmission mode that a vertical screw rod rotates to drive a vertical nut seat to move; the rotation of the vertical screw rod is realized by a vertical servo driver, namely a servo motor or a hydraulic motor; after the positioning sliding shoe is vertically displaced, the vertical position difference between the positioning sliding shoe and the milling cutter is ensured, and milling feeding is realized when the vertical position of the milling cutter is lower than that of the positioning sliding shoe; the milling feeding is realized by controlling the vertical position difference between the positioning sliding shoe and the milling cutter; the axle box body is arranged on a slide carriage seat which can transversely move on the slide rail; the transverse movement of the slide carriage seat is realized by a transmission mode that a transverse screw rod rotates to drive a transverse nut seat to move; the rotation of the transverse screw rod is driven by a transverse servo driver, namely a servo motor or a hydraulic motor; the transverse movement amount of the slide carriage seat is controlled by a transverse profiling following device; the realization of the control of the transverse movement amount of the slide carriage seat ensures the stability of the transverse position of the milling cutter on the top surface of the steel rail when in work; the steel rail online milling device is arranged on a rail milling vehicle, and the angle of a milling head can be adjusted at any time during operation, so that different angle parts of a steel rail head can be milled.

Preferably, the rotary driving shaft for tool changing maintenance is driven in a worm gear and worm mode, a worm gear is mounted on the rotary driving shaft, the worm gear is driven to rotate through a servo motor or a hydraulic motor, and the worm gear is driven to rotate so as to rotate the rotary driving shaft for tool changing maintenance.

In any of the above solutions, it is preferable that the number of the tool holders is two.

In any of the above solutions, it is preferable that the tool holders are symmetrically arranged on the transverse central axis of the connecting beam.

In any of the above schemes, preferably, each group of milling heads includes a main shaft box body, the tail end of the main shaft box body is connected with two meshed rotary end face milling cutter discs through connecting shafts, a speed reducer is installed at the other end of the main shaft box body, and a motor or a hydraulic motor is installed at the input end of the speed reducer and used for driving the milling cutter discs to rotate.

In any of the above aspects, the reduction gear is preferably a planetary reduction gear.

In any of the above aspects, the face milling cutter disc preferably has a diameter dimension of between 150mm and 350 mm.

In any of the above aspects, preferably, the milling drive device drives the two face milling cutter discs in the same milling head group to respectively rotate in the axial direction and in opposite directions during operation.

In any of the above solutions, it is preferable that the milling drive device can also drive only a single cutter head to mill the rail head of the rail from various angles during operation.

In any of the above schemes, preferably, the left side of the axle box body includes a U-shaped cavity, and the U-shaped cavity space is used for installation of the positioning skid shoe.

In any of the above solutions, preferably, the positioning shoe is mounted on the axle box body by two vertical slide rails.

In any of the above schemes, preferably, the axle box body is mounted on the carriage through two vertical slide rails, and the vertical sliding displacement of the axle box body is driven through at least one vertically mounted hydraulic oil cylinder.

In any of the above schemes, preferably, the vertically installed hydraulic cylinder is installed with the large cavity above, the cavity lug seat of the cylinder is fixed on the carriage saddle, and the piston rod end is fixed on the axle box body.

In any of the above aspects, preferably, the saddle is mounted on the chassis by at least two transverse slide rails.

In any of the above schemes, preferably, the base frame is provided with a screw nut, the screw nut is directly and fixedly connected with the carriage seat through a bolt, and the nut drives the carriage seat to realize transverse sliding displacement on the slide rail through the rotation of the screw rod.

In any of the above schemes, preferably, the rear side of the milling head comprises a suction nozzle for absorbing scrap iron generated in the process of milling the steel rail by the milling head and sending the scrap iron into a scrap suction pipe connected to an outlet of the suction nozzle; the scrap iron sucking pipe is used for conveying scrap iron to the scrap iron storage device.

Compared with the prior art, the utility model beneficial effect be:

(1) the angle of a milling head of the steel rail online milling device can be adjusted in real time, and the milling head can rotate around a longitudinal rotating shaft parallel to the extending direction of the steel rail to realize the real-time angle adjustment of the milling head;

(2) by adjusting the angle of the milling head, two milling cutter discs can be used simultaneously or one milling cutter disc can be used independently to mill any angle of the rail head of the steel rail so as to eliminate surface diseases;

(3) because the milling head can rotate, can just rotate the milling head to side or top surface when needs overhaul the milling cutter dish, conveniently overhaul the operation to practice thrift and overhaul the space.

(4) The transverse and vertical displacement of the device is realized by adopting a screw rolling lead screw and nut transmission mode, and the milling feeding amount is realized by controlling the vertical displacement difference of the milling head and the positioning sliding shoe.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the steel rail online milling device capable of adjusting the angle of the milling head according to the present invention.

Fig. 2 is a schematic structural diagram of a preferred embodiment of a tool holder in the embodiment of fig. 1 of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the present invention.

Fig. 3 is a schematic structural view of a preferred embodiment of the axle box body in the embodiment shown in fig. 1 of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the present invention.

Fig. 4 is a schematic view of the internal structure of a preferred embodiment of the axle box body in the embodiment shown in fig. 1 of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the present invention.

Fig. 5 is a schematic structural view of the chassis in the embodiment shown in fig. 1 of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the present invention.

Fig. 6 is a schematic diagram of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the embodiment shown in fig. 1, in the state of tool replacement and maintenance.

Fig. 7 is a schematic diagram of the steel rail on-line milling device capable of adjusting the angle of the milling head according to the embodiment shown in fig. 1, which is used for milling steel rails at different angles.

Description of reference numerals:

1, a tool rest; 2, a shaft box body; 3, positioning a sliding shoe; 4, a bottom frame; 5, a slide carriage seat; 6, steel rails; 7 sleepers; 101 milling driving device; 102 milling a head; 103 suction nozzle; 104 a flange plate; 105 a milling cutter disc; 106 an auxiliary driver; 107 a main driver; 108 a reducer; 109 a main shaft box body; 201 angular adjustment servo driver; 202 a turbine; 203 rotating the drive shaft; 204 worm; 301 vertical servo driver; 302 vertical screw rod; 303 vertical nut seats; 401 lateral servo driver; 402 a transverse screw rod; 403 transverse nut seat; 404 a transverse slide rail; 501, vertical sliding rails; 502 hydraulic cylinder.

Detailed Description

The utility model discloses well regulation: the direction parallel to the steel rail is longitudinal, the direction vertical to the steel rail is transverse, and the gravity direction is vertical; one side of the operation direction of the mobile subway steel rail on-line milling vehicle is right, and the other side is left.

The following describes in detail a preferred technical solution of the rail on-line milling device capable of adjusting the angle of the milling head with reference to fig. 1 to 7:

example 1: a steel rail online milling device capable of adjusting the angle of a milling head is shown in figure 1 and comprises two tool holders 1, wherein the tool holders 1 are connected with a milling driving device 101, and the lower ends of the tool holders 1 are provided with the milling head 102 and a suction nozzle 103; the right side of the cutter frame 1 is connected to a rotary driving shaft 203 for adjusting the angle of the milling head 102 through a flange 104, and the angle of the milling head 102 can be adjusted in real time through the rotation of the driving shaft 203; a driving shaft 203 for adjusting the angle of the milling head 102 is installed in the shaft housing 2; the axle box body 2 is arranged on a vertical slide rail 501 of the slide carriage seat 5 and can be driven by a hydraulic oil cylinder 502 to move vertically; the shaft box body 2 is also provided with a positioning sliding shoe 3; the positioning sliding shoe 3 is fixed with the vertical nut seat 303 through a bolt; the positioning sliding shoe 3 realizes vertical displacement through a transmission mode that the vertical screw rod 302 rotates to drive the vertical nut seat 303 to move; the rotation of the vertical screw rod 302 is realized by a vertical servo driver 301; after the positioning sliding shoe 3 vertically moves, the vertical position difference between the positioning sliding shoe 3 and the milling cutter disc 105 is ensured, and milling feeding is realized when the vertical position of the milling cutter disc 105 is lower than that of the positioning sliding shoe 3; the milling feed is realized by controlling the vertical position difference between the positioning slide shoe 3 and the milling cutter disc 105.

In this embodiment, the output end of the milling driving device 101 is connected to the driving shaft of the milling head 102 through the main shaft housing 109 to drive the milling head 105 of the milling head 102 to rotate.

In this embodiment, the milling driving device 101 includes a main driver 107 and an auxiliary driver 106, wherein the main driver 107 is connected to the main spindle housing 109 through a reducer 108, and the auxiliary driver 106 is directly mounted on the main spindle housing 109.

As shown in fig. 4, in the present embodiment, the rotation of the rotary driving shaft 203 is achieved by rotating the worm 204 through the angle adjustment servo driver 201, so as to drive the worm wheel 202 to rotate, and the worm wheel 202 is fixedly connected to the rotary driving shaft 203.

As shown in fig. 5, in the present embodiment, the carriage base 5 is mounted on the lateral slide rails 404 of the underframe 4; the slide carriage seat 5 and the transverse nut seat 403 are fixed together through bolts; the transverse movement of the slide carriage seat 5 is realized by a transmission mode that the transverse screw rod 402 rotates to drive the transverse nut seat 403 to move; the rotation of the transverse screw 402 is driven by a transverse servo driver 401 to realize the transverse movement of the carriage 5 on the base frame 4.

As shown in fig. 6, the milling head 102 is rotated to the side surface or the top surface by rotating the driving shaft 203, so that the maintenance space is increased, and the milling cutter disk 105 is conveniently maintained and replaced.

As shown in fig. 7, the milling head 102 is rotated to an arbitrary angle by rotating the drive shaft 203, and any desired portion of the rail head of the rail 6 is milled by only one milling cutter.

In this embodiment, the outer diameter of the milling cutter disc 105 is preferably 150mm to 350 mm.

In this embodiment, the online steel rail milling device is fixed on a frame of a rail milling vehicle through a bottom frame 4.

Example 2: the utility model provides a rail on-line milling process device that can adjust milling head angle, is the same as embodiment 1, the difference lies in: the rotation driving shaft 203 for adjusting the angle is rotationally driven by means of a cylinder push rod.

Example 3: the utility model provides a rail on-line milling process device that can adjust milling head angle, is the same as embodiment 1, the difference lies in: the rotation driving shaft 203 for adjusting the angle is rotationally driven in a rack and pinion transmission manner.

The utility model discloses a theory of operation: during operation, an engine or a contact net (a third rail) provides power, the slide carriage seat 5 is driven to move transversely through the rotation of a screw rod, the hydraulic oil cylinder 502 moves vertically to place the end face milling cutter disc 105 at a preset position, a main transmission device of the steel rail milling device is started, the milling head 102 is adjusted to a required angle through the rotary driving shaft 203 according to a target profile, then the milling cutter disc 105 is fed vertically through the positioning sliding shoe 3 after reaching a rated rotating speed until the vertical positions of the milling cutter disc 105 and the positioning sliding shoe 3 are exactly the same, the electric horizontal movement and positioning device controls the horizontal movement of the milling cutter, the milling operation can be carried out until the milling cutter disc 105 is just attached to the inner side of the steel rail 6, at the moment, the milling rail vehicle advances at a set speed, and the top surface, the track moment angle and the working edge of the steel rail 6 are simultaneously milled by using the milling cutter arranged on the end, the surface damage of the steel rail 6 is eliminated, the surface of the rail head of the steel rail 6 can be milled and formed once, and the surface of the rail head can be milled and processed for the second time. The milled iron pieces are sucked by the suction nozzle 103 and conveyed to a designated place.

The utility model discloses not only can carry out meticulous rail shape once more to the rail that the rough milling had maintained, repair effectually, the operating efficiency is high, and environmental pollution is little, moreover because the milling cutter head can be rotatory around longitudinal rotary axle, realizes that the multi-angle mills to it is more convenient to economize on space messenger milling cutter dish and blade change.

The above embodiments are merely preferred embodiments, wherein the components and the connection relations involved are not limited to the above embodiments, and the arrangement and the connection relations of the components in the preferred embodiments may be arbitrarily arranged and combined to form a complete technical solution.

Claims (10)

1. A steel rail online milling device capable of adjusting angles of a milling head comprises at least one cutter frame (1), wherein the cutter frame (1) is connected with a milling driving device (101), the lower end of the cutter frame (1) is also provided with the milling head (102) and a suction nozzle (103), and the steel rail online milling device is characterized in that the right side of the cutter frame (1) is fixed on a rotary driving shaft (203) for adjusting the angles of the milling head (102) through a flange (104), the rotary driving shaft (203) is installed in a shaft box body (2), a turbine (202) is installed on the rotary driving shaft (203), an angle adjustment servo driver (201) is installed at the top of the shaft box body (2), a worm (204) installed at the output end is rotationally driven through the angle adjustment servo driver (201), the rotation of the worm (204) drives the turbine (202) and the rotary driving shaft (203) to rotate around a longitudinal rotating shaft parallel to the, so as to realize the real-time angle adjustment of the milling head (102).

2. A steel rail online milling device capable of adjusting the angle of a milling head according to claim 1, characterized in that the rotary driving shaft (203) is driven by a worm wheel (202) and a worm (204) in a rotary mode instead of a cylinder push rod or a gear rack transmission mode.

3. The steel rail online milling device capable of adjusting the angle of the milling head as claimed in claim 1, wherein the shaft box body (2) is mounted on a vertical sliding rail (501) of the carriage seat (5), the shaft box body (2) is further mounted with a positioning sliding shoe (3), the positioning sliding shoe (3) is fixedly connected with a vertical nut seat (303) through a bolt, the vertical nut seat (303) is sleeved on a vertical screw rod (302), the vertical screw rod (302) is connected with a vertical servo driver (301), the milling depth is a vertical displacement of the positioning sliding shoe (3) driven by rotation of the vertical servo driver (301), milling feeding is realized when the vertical position of the positioning sliding shoe (3) is higher than the milling head (102), and the height position difference between the positioning sliding shoe (3) and the milling head (102) is a set milling depth.

4. A rail on-line milling device capable of adjusting the angle of a milling head according to claim 1, characterized in that the number of tool holders (1) is two.

5. A rail on-line milling device capable of adjusting the angle of a milling head according to claim 1, wherein the milling driving device (101) comprises a main driver (107) and an auxiliary driver (106), each group of milling heads (102) comprises a main shaft box body (109), the tail end of the main shaft box body (109) is connected with two meshed rotary end face milling cutter discs (105) through a connecting shaft, the main driver (107) is connected with the main shaft box body (109) through a speed reducer (108), and the auxiliary driver 106 is directly installed on the main shaft box body (109).

6. A rail on-line milling device capable of adjusting the angle of a milling head according to claim 5, characterized in that the outer diameter of the milling cutter disc (105) is 150mm-350 mm.

7. A rail on-line milling device capable of adjusting the angle of a milling head as claimed in claim 5, characterized in that the reducer (108) is a planetary reducer.

8. A rail on-line milling device capable of adjusting the angle of a milling head as claimed in claim 3, characterized in that the positioning slipper (3) is mounted on the axle box body (2) through two vertical sliding rails (501).

9. A rail on-line milling device capable of adjusting the angle of a milling head as claimed in claim 3, characterized in that the axle box (2) is mounted on the carriage base (5) by two vertical slide rails.

10. A steel rail online milling device capable of adjusting the angle of a milling head according to claim 3, which comprises a base frame (4), wherein a transverse servo driver (401), a transverse screw rod (402), a transverse nut seat (403) and a transverse slide rail (404) are mounted on the base frame (4), the transverse servo driver (401) is connected with the transverse screw rod (402), the transverse screw rod (402) is sleeved with the transverse nut seat (403), a slide carriage seat (5) is mounted on the transverse slide rail (404), and the slide carriage seat (5) is fixedly connected with the transverse nut seat (403) through bolts.

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