CN113235334A - Steel rail polishing unit - Google Patents

Abstract

The invention discloses a steel rail polishing unit.A polishing unit frame is movably arranged on a transverse guide post, and a first rotating arm and a second rotating arm are both arranged in a rotating arm hole at the lower part of the polishing unit frame through a deflecting shaft. Two lifting guide pillars are respectively arranged on the first rotating arm and the second rotating arm, the grinding motor is arranged on the motor mounting back plate, and the grinding wheel is arranged on a shaft of the grinding motor. The lifting guide sleeve is arranged on the motor mounting back plate, and a component formed by the polishing motor and the motor mounting back plate is movably arranged on the lifting guide pillar through the lifting guide sleeve. The guide pillar fixing beam is installed at the upper end of the lifting guide pillar, and the lifting driving connecting seat is installed on the motor installation back plate. One end of the lifting driving mechanism is arranged on the lifting driving connecting seat, and the other end of the lifting driving mechanism is arranged on the guide pillar fixing beam. One end of the deflection driving mechanism is arranged on the polishing unit frame, and the other end of the deflection driving mechanism is arranged on the second rotating arm. The invention can solve the technical problems of small deflection angle range, large volume, complex structure and difficult installation and maintenance of the existing polishing unit.

Description

Steel rail polishing unit

Technical Field

The invention relates to the technical field of rail engineering machinery, in particular to a polishing unit applied to a polishing device of a steel rail polishing vehicle.

Background

The grinding device is an actuating mechanism for steel rail grinding operation, is also a key component and a core operation structure of the steel rail grinding wagon, and has important position and function on the grinding wagon. Meanwhile, the polishing action, quality, efficiency, coverage of the steel rail polishing angle, the advancement of the polishing process and the like required by the polishing car are finally reflected by the polishing device. While the grinding device usually comprises a plurality of grinding units, the existing rail grinding device generally comprises 6, 8, 10 and other grinding units. The most central part of the grinding trolley is the grinding unit, and the grinding wheel of the grinding unit directly acts on the steel rail to realize the grinding operation, so the reasonability of the mechanism design of the grinding unit and the accuracy of the action are very important.

At present, rail grinding trucks used at home and abroad mainly adopt the following grinding units in structural forms.

The first rail grinding wagon consists of 6 grinding carriages, each having 4 grinding units. Wherein, two grinding motors have been arranged to every unit, and every motor is installed between two guide pillar guide pin bushings, thereby drives the motor up-and-down motion through the push down hydro-cylinder and realizes the operation of polishing, thereby the deflection axle and the bearing installation cooperation in addition, thereby the unit of polishing that two motors are constituteed drives the unit frame of polishing by a deflection hydro-cylinder and realizes wholly deflecting. The defects are mainly as follows:

(1) only a pressing and deflecting mechanism is arranged, and a transverse moving mechanism is not arranged, so that the grinding of the turnout line cannot be carried out;

(2) two grinding motors are arranged on the same unit frame, the integral grinding enveloping angle is limited, and the full coverage of the profile can be formed only by grinding for many times;

(3) each grinding motor is arranged between two guide pillars and guide sleeves, the resistance is large, the constant-power grinding control reaction is lagged, the stress of the motor is unbalanced, and the rigidity of the whole structure of the grinding unit is relatively weak.

The second type of steel rail grinding wagon adopts a grinding wagon grinding unit with a parallelogram mechanism pneumatic pressing structural design. The polishing unit in the form adopts a non-guide type pressing structure, and the polishing unit comprises two polishing motors, two groups of deflection oil cylinders, a beam frame and the like. In the prior art, patents CN102758390B, CN203729166U, CN203729167U and CN203729169U all relate to this type of sharpening unit. The defects are mainly as follows:

(1) the polishing unit has a complex and heavy structure, and the coverage range of the deflection angle of the motor is small;

(2) the frame structure is complex, and the maintenance of the motor is very difficult;

(3) the polishing motor is a motor with a fan, and under a severe polishing operation environment, the polishing motor is easy to enter dust and scrap iron to be damaged;

(4) the polishing unit is not designed with a transverse moving mechanism.

The third rail grinding wagon has 8 grinding units that can be independently deflected per grinding unit. Each motor in the grinding unit can independently move transversely, lift and deflect and is controlled by hydraulic pressure. The pressing mechanism adopts the design of double guide columns and a single pressing oil cylinder, the deflection adopts two deflection oil cylinders, a deflection pin shaft is matched with a connecting block, and the transverse movement adopts a hydraulic driving mode. The defects are mainly as follows:

(1) the polishing motor is arranged between the two guide columns and the guide sleeve, the up-down sliding resistance is large, the unbalance loading is large, the lifting and falling response is slow, and the constant-power polishing control reaction is lagged;

(2) the deflection angle range of the polishing motor is small, the polishing unit is large in size, complex in structure, poor in space utilization, high in production difficulty and not easy to install, maintain and maintain;

(3) the polishing unit frame is assembled by splicing bolts, the structure and the installation are complex, the polishing motor is installed by guide pillars with fixed intervals, the verticality requirement of the distance between the upper guide pillar installation hole and the lower guide pillar installation hole and the junction surface of the guide pillars and the guide pillar installation holes is high, and the parallelism of the two guide pillars is difficult to guarantee; meanwhile, a certain height difference value needs to be ensured after the two guide pillars of the polishing unit are installed, and the guide pillar installation frame is high in processing difficulty and difficult to maintain;

(4) the deflection mechanism of the polishing unit adopts a double-oil-cylinder structure, so that the oil cylinders are easy to move asynchronously, and the deflection angle of the polishing unit is not accurately controlled.

Disclosure of Invention

In view of this, the present invention provides a rail grinding unit to solve the technical problems of small deflection angle range, large volume, complex structure and difficult installation, maintenance and repair of the existing grinding unit.

In order to achieve the above object, the present invention specifically provides a technical implementation scheme of a rail grinding unit, including: guide pillar fixed beam, the unit frame of polishing, lift actuating mechanism, grinding motor, motor installation backplate, lift guide pin bushing, lift drive connecting seat, deflection actuating mechanism, deflection axle, lift guide pillar, first rocking arm, emery wheel and the second rocking arm of polishing. The polishing unit frame is movably arranged on the transverse moving guide column, and the first rotating arm and the second rotating arm are arranged in a rotating arm hole in the lower portion of the polishing unit frame through deflection shafts. Two lifting guide pillars are respectively arranged on the first rotating arm and the second rotating arm, the polishing motor is arranged on the motor mounting back plate, and the polishing grinding wheel is arranged on a shaft of the polishing motor. The lifting guide sleeve is arranged on the motor mounting back plate, and a component formed by the polishing motor and the motor mounting back plate is movably arranged on the lifting guide pillar through the lifting guide sleeve. The guide post fixing beam is arranged at the upper end of the lifting guide post, and the lifting driving connecting seat is arranged on the motor mounting back plate. One end of the lifting driving mechanism is installed on the lifting driving connecting seat, and the other end of the lifting driving mechanism is installed on the guide pillar fixing beam. One end of the deflection driving mechanism is installed on the polishing unit frame, and the other end of the deflection driving mechanism is installed on the second rotating arm.

Furthermore, the steel rail polishing unit further comprises a transverse moving driving mechanism, the movable end of the transverse moving driving mechanism is installed on the polishing unit frame, and the fixed end of the transverse moving driving mechanism is installed on the transverse moving guide pillar installation frame. One end of the transverse moving guide column is connected to the transverse moving guide column mounting frame, the other end of the transverse moving guide column is connected to the transverse moving guide column outer beam, and the transverse moving driving mechanism can drive the polishing unit frame to move on the transverse moving guide column in a parallel mode.

Furthermore, the movable end of the lifting driving mechanism is installed on the lifting driving connecting seat, and the fixed end is installed on the guide pillar fixing beam through the lifting driving installing seat. The lifting guide sleeve can be driven to move on the lifting guide pillar through the lifting driving mechanism, so that the polishing motor is driven to move up and down on the lifting guide pillar.

Furthermore, the fixed end of the deflection driving mechanism is arranged on the polishing unit frame, and the movable end of the deflection driving mechanism is hinged to the second rotating arm. The deflection driving mechanism can drive the second rotating arm to rotate by taking the deflection shaft as a shaft, so that the grinding motor is driven to rotate around the deflection shaft, and the grinding wheel can deflect at different angle positions relative to the steel rail.

Furthermore, one end of the first rotating arm is connected to the lifting guide column, and the other end of the first rotating arm is hinged to a rotating arm hole in the lower portion of the arm support on one side through a deflection shaft.

Furthermore, the second rotating arm is of a V-shaped structure, the V-shaped lower part of the second rotating arm is hinged to a rotating arm hole in the lower part of the arm support on the other side through a deflection shaft, one end of the V-shaped upper part of the second rotating arm is connected to the lifting guide post, and the other end of the V-shaped upper part of the second rotating arm is connected to the movable end of the deflection driving mechanism.

Furthermore, the polishing unit frame comprises two arm supports which are parallel to each other, are arranged oppositely along the longitudinal direction and adopt a hollow crank arm structure, and each arm support comprises two ribbed plates which are parallel to each other and are arranged oppositely along the longitudinal direction and a transverse guide sleeve connected to the upper parts of the two ribbed plates. The polishing unit frame is movably arranged on the transverse guide pillar through the transverse guide sleeve.

Preferably, the rib plate and the transverse moving guide sleeve are of an integrated structure formed by machining after assembly and welding.

Further, the steel rail grinding unit further comprises a motor locking device arranged on the upper portion of the grinding unit frame, and when the grinding motor is in a high position and is not in a working state, the motor locking device limits the grinding motor not to fall down. The motor locking device comprises a locking mounting seat, a locking handle, a connecting pin, a locking hook and a locking spring. The locking mounting seat is fixed on the side portion of the arm support, one end of the locking handle penetrates through the locking mounting seat, and the other end of the locking handle is connected with the locking hook through a connecting pin. One end of the locking spring is connected to the locking mounting seat, and the other end of the locking spring is connected with the connecting pin. One end of the locking hook is fixed on the arm support in a locking mode, and the other end of the locking hook is connected to the motor mounting back plate.

Furthermore, the grinding wheel adopts a cup type grinding wheel structure, the grinding working surface of the grinding wheel is an end surface, and the lifting guide sleeve adopts a linear bearing structure.

Preferably, the lifting driving mechanism adopts a lifting cylinder, the deflection driving mechanism adopts a deflection oil cylinder, and the transverse moving driving mechanism adopts a transverse moving electric cylinder.

Further, the rail grinding unit can meet the grinding requirement that the grinding motor is used for grinding at any angle between 75 degrees of deflection towards the inner side of the rail and 30 degrees of deflection towards the outer side of the rail.

Through implementing the technical scheme of the steel rail grinding unit provided by the invention, the steel rail grinding unit has the following beneficial effects:

(1) the rail polishing unit has the design of a pressing, deflecting and traversing mechanism, has a large polishing angle range and a simple and reliable structure, can fully utilize effective space, meets the requirements of polishing motors with an inner deviation of 75 degrees and an outer deviation of 30 degrees, effectively solves the technical problems of small deflection angle range, large volume and complex structure of the conventional polishing unit, and can completely meet various requirements of rail polishing of railways;

(2) according to the steel rail polishing unit, the lifting motion structure in the form of the double parallel guide columns and the four sliding blocks is adopted, and the single-pressing driving mechanism is adopted, so that the technical problems that the traditional polishing unit is large in up-and-down sliding resistance, the driving mechanisms are asynchronous due to the adoption of the double lifting driving mechanisms, the angle control of the polishing unit is not accurate, and the polishing motor is inconvenient to replace are effectively solved, and the grinding stone is softer at the moment of contacting the steel rail;

(3) according to the steel rail polishing unit, the single-pressing driving mechanism is adopted, the polishing quality of a steel rail polishing initial stage can be ensured, the guide sleeve adopts the linear bearing, the effect between the pressing guide pillar and the guide sleeve is changed into rolling friction, the lifting resistance of a polishing motor is reduced, and the lifting and falling response speed and the integral falling point control precision of the polishing unit during constant-power polishing can be ensured;

(4) according to the rail polishing unit, the polishing unit frame is designed in an open structure, the polishing unit frame provided with the polishing motor can slide on the transverse guide pillar or integrally withdraw before the transverse guide pillar outer beam is not installed, so that the rail polishing unit is beneficial to integral maintenance, and meanwhile, the polishing motor can realize maintenance after transversely moving towards the outer side and deflecting towards the outer side for a certain angle, so that the maintenance performance of the whole polishing unit can be effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be derived by a person skilled in the art without inventive effort.

FIG. 1 is a schematic left side elevational view of one embodiment of a rail grinding unit of the present invention;

FIG. 2 is a rear elevational view in schematic form of one embodiment of the rail grinding unit of the present invention;

FIG. 3 is a right side elevational view of a schematic of the construction of one embodiment of the rail grinding unit of the present invention;

FIG. 4 is a front elevational view in schematic form of one embodiment of a rail grinding unit of the present invention;

FIG. 5 is a partially enlarged schematic view of portion A of FIG. 4;

FIG. 6 is a top schematic view of the structure of one embodiment of the rail grinding unit of the present invention;

FIG. 7 is a schematic perspective view of the configuration of one embodiment of a rail grinding unit of the present invention;

FIG. 8 is a schematic perspective view of a rail grinding unit in accordance with an embodiment of the present invention from another perspective;

FIG. 9 is a schematic view of a rail grinding unit with the grinding unit frame removed according to one embodiment of the present invention;

FIG. 10 is a schematic view of a rail grinding unit according to an embodiment of the present invention shown from another perspective with the grinding unit frame removed;

FIG. 11 is a schematic illustration of an installation configuration of one embodiment of a rail grinding unit of the present invention;

FIG. 12 is a schematic view of the mounting arrangement of one embodiment of the rail grinding unit of the present invention from another perspective;

FIG. 13 is a schematic view of the mounting arrangement of one embodiment of the rail grinding unit of the present invention from a further perspective;

FIG. 14 is a schematic view of a range of grinding angles for one embodiment of a rail grinding unit of the present invention;

in the figure: 1-a traverse guide post mounting rack, 2-a traverse guide post, 3-a guide post fixing beam, 4-a grinding unit rack, 5-a motor locking device, 6-a lifting drive mechanism, 7-a grinding motor, 8-a motor mounting back plate, 9-a lifting guide bush, 10-a lifting drive connection seat, 11-a deflection drive mechanism, 12-a deflection pin shaft, 13-a traverse guide post outer beam, 14-a lifting guide post, 15-a first turning arm, 16-a grinding wheel, 17-a second turning arm, 18-a traverse drive mechanism, 19-a first connection beam, 20-a traverse guide bush, 21-a motor junction box, 22-a locking mounting seat, 23-a locking handle, 24-a connection pin, 25-a locking hook, 26-a locking spring, 27-a lifting drive mounting seat, 28-outer shaft sleeve, 29-inner shaft sleeve, 30-stop washer, 31-nut, 40-arm support, 41-ribbed plate, 42-rotating arm hole, 43-second connecting beam and 50-steel rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring now to figures 1 to 14 of the drawings, there is shown an embodiment of a rail grinding unit according to the present invention, and the invention will be further described with reference to the drawings and the embodiment.

As shown in fig. 1 to 14, an embodiment of a rail grinding unit specifically includes: the grinding device comprises a guide post fixing beam 3, a grinding unit frame 4, a lifting driving mechanism 6, a grinding motor 7, a motor mounting back plate 8, a lifting guide sleeve 9, a lifting driving connecting seat 10, a deflection driving mechanism 11, a deflection shaft 12, a lifting guide post 14, a first rotating arm 15, a grinding wheel 16 and a second rotating arm 17. The polishing unit frame 4 is movably arranged on the transverse moving guide post 2, and the first rotating arm 15 and the second rotating arm 17 are both arranged on a rotating arm hole 42 at the lower part of the polishing unit frame 4 through a deflection shaft 12. Two lifting guide columns 14 are respectively arranged on a first rotating arm 15 and a second rotating arm 17, the grinding motor 7 can be arranged on the motor mounting back plate 8 through bolts, and a grinding wheel 16 is arranged on a shaft of the grinding motor 7. The motor mounting back plate 8 is good in machinability, so that the grinding motor 7 is easy to mount, overhaul and maintain. The lifting guide sleeve 9 can be mounted on the motor mounting back plate 8 through bolts, and the assembly composed of the grinding motor 7 and the motor mounting back plate 8 can be movably mounted on the lifting guide post 14 through the lifting guide sleeve 9 and can slide up and down (as shown in the directions of H in fig. 11, 12 and 13) along the lifting guide post 14. The guide post fixing beam 3 may be installed at the upper end of the lifting guide post 14 by means of a bolt, and the lifting driving connection seat 10 is installed on the motor installation back plate 8. One end of the lifting driving mechanism 6 is mounted on the lifting driving connecting seat 10, and the other end is mounted on the guide pillar fixing beam 3. The yaw drive mechanism 11 has one end mounted on the sharpening unit frame 4 and the other end mounted on the second swivel arm 17. The rail polishing unit further comprises a transverse moving driving mechanism 18, wherein the movable end of the transverse moving driving mechanism 18 is installed on the polishing unit frame 4, and the fixed end of the transverse moving driving mechanism 18 is installed on the transverse moving guide pillar installation frame 1. The sharpening unit holder 4 is moved in the transverse direction (direction indicated by L in fig. 11, 12 and 13) on the traverse guide post 2 by the traverse driving mechanism 18.

Wherein, grinding motor 7 specifically adopts aluminium system motor housing, has effectively realized the lightweight design of rail unit of polishing. Meanwhile, the grinding motor 7 is designed by a fanless motor, so that the service life of the motor is effectively prolonged. The rail grinding unit described in the embodiment is provided with a transverse moving mechanism, a pressing mechanism and a deflecting mechanism, and can grind the lines such as a rail main line, a turnout and the like. Simultaneously, the rail unit of polishing specifically adopts the vertical (lift) motion structure of two parallel guide pillars (being lift guide pillar 14) and four slider (being lift guide pin bushing 9) forms, singly pushes down actuating mechanism (being lift actuating mechanism), can effectively solve traditional unit of polishing and motor vibration too big, the lower technical problem of structural rigidity.

The grinding unit frame 4 further comprises two arm supports 40 which are parallel to each other and are arranged oppositely along the longitudinal direction and adopt a hollow crank arm structure, and a second connecting beam 43 is arranged between the two arm supports 40. The arm support 40 comprises two ribs 41 which are parallel to each other and are arranged oppositely along the longitudinal direction, and a traverse guide sleeve 20 which is connected to the upper parts of the two ribs 41. The polishing unit frame 4 is movably mounted on the transverse guide pillar 2 through a transverse guide sleeve 20, and two ends of the transverse guide sleeve 20 are connected with first connecting beams 19. Rib plate 41 and sideslip guide pin bushing 20 adopt the integrated type structure of equipment welding postforming, more can guarantee the machining precision, can solve current unit frame of polishing and adopt the bolt concatenation equipment mode, the technical defect that the structure is complicated, the installation is troublesome. The steel rail grinding unit described in the specific embodiment is simple and exquisite in structure, utilizes limited space to the maximum extent, and can meet the design requirement for miniaturization of the whole grinding unit. In addition, a motor junction box 21 is also provided on the front surface of the sanding motor 7.

The movable end of the lifting driving mechanism 6 is mounted on the lifting driving connecting base 10, and the fixed end is mounted on the guide pillar fixing beam 3 through the lifting driving mounting base 27. The lifting guide sleeve 9 can be driven to move on the lifting guide post 14 through the lifting driving mechanism 6, so that the polishing motor 7 is driven to move up and down on the lifting guide post 14. In this embodiment, specifically adopt single lift actuating mechanism, can solve and adopt two lift actuating mechanism easily to lead to actuating mechanism asynchronous, the unit angle control of polishing is not accurate to and inconvenient change polishing motor 7's technical defect. The fixed end of the deflection driving mechanism 11 is mounted on the grinding unit frame 4, and the movable end is hinged on the second rotating arm 17. The second rotating arm 17 can be driven by the deflection driving mechanism 11 to rotate around the deflection shaft 12, so that the grinding motor 7 is driven to rotate around the deflection shaft 12 in the direction shown as W in the attached drawings 11, 12 and 13, and the grinding wheel 16 can deflect relative to the steel rail at different angular positions. Meanwhile, under the coordination of the traverse driving mechanism 18, the rail grinding unit can realize that the grinding wheel 16 forms an optimal grinding position relative to the rail 50, and realize high-quality grinding of the rail 50. Wherein, the deflection driving mechanism 11 is provided with a displacement sensor mechanism, so that the angle deflection is more stable, the response speed is higher, and meanwhile, the risk that the driving mechanism is easy to lose efficacy due to the adoption of a single deflection driving mechanism can be effectively avoided. After the grinding motor 7 is installed, the included angle between the grinding wheel 16 and the steel rail 50 is controllable, and the splashing direction of high-temperature scrap iron under grinding can be effectively ensured to be controllable.

One end of the first rotating arm 15 is connected to the lifting guide post 14, and the other end is hinged and mounted in a rotating arm hole 42 at the lower part of the arm support 40 through the deflection shaft 12. The second rotating arm 17 further adopts a V-shaped structure, the V-shaped lower part of the second rotating arm 17 is hinged and installed in a rotating arm hole 42 at the lower part of the other side arm frame 40 through a deflection shaft 12, one end of the V-shaped upper part of the second rotating arm 17 is connected to the lifting guide post 14, and the other end of the V-shaped upper part is connected to the movable end of the deflection driving mechanism 11.

The grinding wheel 16 further adopts a cup type grinding wheel structure, the grinding working surface of the grinding wheel 16 is an end surface, and the lifting guide sleeve 9 further adopts a linear bearing (namely a rolling bearing) structure. Grinding motor 7 further adopts the elevation structure of guide pillar, guide pin bushing combination, and the guide pillar upper end interval is fixed knot structure, and the lower extreme is adjustable structure, and the guide pin bushing adopts the linear bearing structure for grinding motor 7 reciprocates more smoothly, ensures that constant power control is more effective in grinding motor 7 working process. The effect between guide pillar, guide pin bushing changes rolling friction into, and the guide pin bushing adopts linear bearing for the resistance of polishing motor 7 lift reduces, more can guarantee the reaction rate of constant power polishing and the control of the whole placement precision of the unit of polishing. The rail polishing unit described in this embodiment solves a series of technical defects that the existing polishing motor adopts a fixed-interval guide pillar installation mode, the requirement on the distance between upper and lower installation holes of the guide pillar is high, the verticality requirement on the bonding surfaces of the guide pillar and the guide pillar installation hole is high, the parallelism between two guide pillars is difficult to guarantee, the resistance is large and the unbalance loading is large in the up-down moving process, a certain height difference value needs to be guaranteed after the two guide pillars are installed, the machining difficulty of the guide pillar installation frame is large, and the maintenance is difficult.

As a preferred embodiment of the present invention, the lifting driving mechanism 6 further employs a lifting cylinder, which can effectively solve the technical problems of excessive vibration and low structural rigidity of the traditional polishing unit and motor. The deflection driving mechanism 11 further adopts a deflection oil cylinder which is provided with a high-precision displacement sensor, the angle deflection is stable and reliable, and the deflection angle is controlled by a built-in sensor of the oil cylinder, so that the angle deflection is more accurate. Sideslip actuating mechanism 18 further adopts the sideslip electric jar, and position control is more accurate, has better flexibility and stronger prevent falling the rail ability, can stabilize the vehicle and walk, can effectively promote the rail quality of polishing when realizing polishing the angle and covering on a large scale.

As shown in fig. 11, 12 and 13, two traverse guide posts 2 are mounted at one end on the traverse guide post outer beam 13 and at the other end through the traverse guide post mounting frame 1 and can be fixed on the traverse guide post mounting frame 1 by bolts, nuts or other means. One end of the transverse guide pillar 2 is connected to the transverse guide pillar mounting rack 1, and the other end is connected to the transverse guide pillar outer beam 13. Before the outer beam 13 of the transverse guide post is not installed, the polishing unit frame 4 provided with the polishing motor 7 can slide on the transverse guide post 2 or integrally withdraw, which is beneficial to the maintenance of the whole steel rail polishing unit. Meanwhile, the polishing motor 7 can be maintained after transversely moving towards the outer side and deflecting outwards for a certain angle.

As shown in fig. 7, the rail grinding unit further includes a motor locking device 5 disposed on the upper portion of the grinding unit frame 4, when the grinding motor 7 is at a high position and is not in a working state, the motor locking device 5 limits the grinding motor 7 from falling, so that the operation safety and the working reliability of the rail grinding unit can be effectively ensured. The motor locking device 5 includes a lock mounting seat 22, a lock handle 23, a connecting pin 24, a lock hook 25, and a lock spring 26. The locking installation seat 22 is fixed on the side of the arm support 40, one end of the locking handle 23 is arranged in the locking installation seat 22 in a penetrating way, and the other end is connected with the locking hook 25 through the connecting pin 24. The locking spring 26 is connected at one end to the locking mount 22 and at the other end to the connecting pin 24. One end of the locking hook 25 is fixed on the arm support 40 in a locking manner, and the other end is connected to the motor mounting back plate 8.

As shown in fig. 5, an inner bushing 29 is provided between the pivot shaft 12 and the second pivot arm 17, an outer bushing 28 is provided between the pivot shaft 12 and the rib 41, and the pivot shaft 12 is fixed by a lock washer 30 and a nut 31. A similar arrangement is provided between the other side of the pivot axis 12 and the first pivot arm 15, and the rib 41. All adopt bush structural design at the mounted position of deflection axle 12, the bush and deflection axle can be changed to the accessible after the bush wearing and tearing, can effectively prolong the life of polishing unit frame 4 when guaranteeing that polishing motor 7 steadily deflects.

As shown in fig. 14, the rail grinding unit can be used for grinding at any angle between 75 ° towards the inner side of the rail 50 and 30 ° towards the outer side of the rail 50 by the grinding motor 7.

In the present embodiment, the lifting drive mechanism 6, the deflecting drive mechanism 11, and the traverse drive mechanism 18 may be embodied as oil cylinders, air cylinders, or electric cylinders. The guide sleeve and guide column combined structure of the lifting guide column 14 and the lifting guide sleeve 9, and the transverse guide column 2 and the transverse guide sleeve 20 can also adopt alternative structures such as guide rail and slider combination, gear and rack combination and the like to realize the function of a moving pair. It should be particularly noted that, although the traverse moving cylinder or the traverse moving cylinder may be used instead of the traverse moving cylinder, the lifting cylinder may be used instead of the lifting cylinder or the lifting cylinder, and the deflection cylinder may be used instead of the deflection cylinder or the deflection electric cylinder, the overall polishing effect is inferior to the preferred technical solution provided by the above embodiments of the present invention.

By implementing the technical scheme of the steel rail grinding unit described in the specific embodiment of the invention, the following technical effects can be produced:

(1) the steel rail polishing unit described in the specific embodiment of the invention has the design of a pressing, deflecting and traversing mechanism, has a large polishing angle range and a simple and reliable structure, can fully utilize effective space, meets the requirements of a polishing motor for an inner deflection of 75 degrees and an outer deflection of 30 degrees, effectively solves the technical problems of small deflection angle range, large volume and complex structure of the existing polishing unit, and can completely meet various requirements of rail polishing;

(2) according to the steel rail polishing unit described in the specific embodiment of the invention, a lifting motion structure in the form of double parallel guide columns and four sliding blocks is adopted, and a single-pressing driving mechanism is adopted, so that the technical problems that the vertical sliding resistance of the traditional polishing unit is large, the driving mechanisms are asynchronous due to the adoption of double lifting driving mechanisms, the angle control of the polishing unit is not accurate, and the polishing motor is inconvenient to replace are effectively solved, and the moment when a grinding stone contacts the steel rail is softer;

(3) according to the steel rail polishing unit described in the specific embodiment of the invention, the single-pressing driving mechanism is adopted, the polishing quality of the steel rail in the initial polishing stage can be ensured, the guide sleeve adopts the linear bearing, and the action between the pressing guide pillar and the guide sleeve is changed into rolling friction, so that the lifting resistance of the polishing motor is reduced, and the lifting and falling response speed during constant-power polishing and the overall falling point control precision of the polishing unit can be ensured;

(4) according to the rail polishing unit described in the specific embodiment of the invention, the polishing unit frame is designed in an open structure, before the outer beam of the transverse guide pillar is not installed, the polishing unit frame provided with the polishing motor can slide on the transverse guide pillar or integrally withdraw from the transverse guide pillar, so that the rail polishing unit is beneficial to integral maintenance, and meanwhile, after the polishing motor transversely moves outwards and deflects outwards for a certain angle, the maintenance of the polishing motor can be realized, and the maintenance and maintenance performance of the whole polishing unit can be effectively improved.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (12)

1. A rail grinding unit, comprising: the device comprises a guide post fixing beam (3), a polishing unit frame (4), a lifting driving mechanism (6), a polishing motor (7), a motor mounting back plate (8), a lifting guide sleeve (9), a lifting driving connecting seat (10), a deflection driving mechanism (11), a deflection shaft (12), a lifting guide post (14), a first rotating arm (15), a polishing grinding wheel (16) and a second rotating arm (17); the polishing unit frame (4) is movably arranged on the transverse moving guide post (2), and the first rotating arm (15) and the second rotating arm (17) are both arranged on a rotating arm hole (42) at the lower part of the polishing unit frame (4) through a deflection shaft (12); two lifting guide columns (14) are respectively arranged on the first rotating arm (15) and the second rotating arm (17), the polishing motor (7) is arranged on a motor mounting back plate (8), and the polishing grinding wheel (16) is arranged on a shaft of the polishing motor (7); the lifting guide sleeve (9) is arranged on the motor mounting back plate (8), and a component consisting of the polishing motor (7) and the motor mounting back plate (8) is movably arranged on the lifting guide column (14) through the lifting guide sleeve (9); the guide post fixing beam (3) is arranged at the upper end of the lifting guide post (14), and the lifting driving connecting seat (10) is arranged on the motor mounting back plate (8); one end of the lifting driving mechanism (6) is arranged on the lifting driving connecting seat (10), and the other end of the lifting driving mechanism is arranged on the guide pillar fixing beam (3); one end of the deflection driving mechanism (11) is arranged on the grinding unit frame (4), and the other end is arranged on the second rotating arm (17).

2. A rail grinding unit according to claim 1, wherein: the polishing device is characterized by further comprising a transverse moving driving mechanism (18), wherein the movable end of the transverse moving driving mechanism (18) is installed on the polishing unit frame (4), and the fixed end of the transverse moving driving mechanism is installed on the transverse moving guide pillar installation frame (1); one end of the transverse moving guide post (2) is connected to the transverse moving guide post mounting frame (1), the other end of the transverse moving guide post is connected to the transverse moving guide post outer beam (13), and the polishing unit frame (4) can be driven to move on the transverse moving guide post (2) in a parallel mode through the transverse moving driving mechanism (18).

3. A rail grinding unit according to claim 2, wherein: the movable end of the lifting driving mechanism (6) is arranged on the lifting driving connecting seat (10), and the fixed end is arranged on the guide pillar fixing beam (3) through a lifting driving mounting seat (27); the lifting guide sleeve (9) can be driven to move on the lifting guide post (14) through the lifting driving mechanism (6), so that the grinding motor (7) is driven to move up and down on the lifting guide post (14).

4. A rail grinding unit according to claim 3, wherein: the fixed end of the deflection driving mechanism (11) is arranged on the polishing unit frame (4), and the movable end is hinged on the second rotating arm (17); the deflection driving mechanism (11) can drive the second rotating arm (17) to rotate by taking the deflection shaft (12) as an axis, so that the grinding motor (7) is driven to rotate around the deflection shaft (12), and the grinding wheel (16) can deflect at different angle positions relative to the steel rail (50).

5. A rail grinding unit according to claim 4, wherein: one end of the first rotating arm (15) is connected to the lifting guide post (14), and the other end of the first rotating arm is hinged to a rotating arm hole (42) at the lower part of the arm support (40) on one side through a deflection shaft (12).

6. A rail grinding unit according to claim 5, wherein: the second rotating arm (17) adopts a V-shaped structure, and the V-shaped lower part of the second rotating arm (17) is hinged and installed in a rotating arm hole (42) at the lower part of the arm support (40) at the other side through a deflection shaft (12); one end of the V-shaped upper part of the second rotating arm (17) is connected to the lifting guide column (14), and the other end of the V-shaped upper part is connected to the movable end of the deflection driving mechanism (11).

7. A rail grinding unit according to any one of claims 1 to 6, wherein: the polishing unit frame (4) comprises two arm supports (40) which are parallel to each other, are arranged oppositely along the longitudinal direction and adopt a hollow crank arm structure, and each arm support (40) comprises two ribbed plates (41) which are parallel to each other and are arranged oppositely along the longitudinal direction and a transverse guide sleeve (20) connected to the upper parts of the two ribbed plates (41); the polishing unit frame (4) is movably arranged on the transverse guide pillar (2) through a transverse guide sleeve (20).

8. A rail grinding unit according to claim 7, wherein: the polishing machine is characterized by further comprising a motor locking device (5) arranged on the upper portion of the polishing unit frame (4), and when the polishing motor (7) is in a high position and is not in a working state, the motor locking device (5) limits the polishing motor (7) from falling; the motor locking device (5) comprises a locking mounting seat (22), a locking handle (23), a connecting pin (24), a locking hook (25) and a locking spring (26); the locking mounting seat (22) is fixed on the side part of the arm support (40), one end of the locking handle (23) is arranged in the locking mounting seat (22) in a penetrating mode, and the other end of the locking handle is connected with the locking hook (25) through a connecting pin (24); one end of the locking spring (26) is connected to the locking mounting seat (22), and the other end of the locking spring is connected with the connecting pin (24); one end of the locking hook (25) is fixed on the arm support (40) in a locking mode, and the other end of the locking hook is connected to the motor mounting back plate (8).

9. A rail grinding unit according to claim 8, wherein: the rib plate (41) and the transverse guide sleeve (20) are of an integrated structure formed by machining after assembly and welding.

10. A rail grinding unit according to claim 1, 2, 3, 4, 5, 6, 8 or 9, wherein: the polishing grinding wheel (16) is of a cup type grinding wheel structure, the polishing working surface of the polishing grinding wheel (16) is an end surface, and the lifting guide sleeve (9) is of a linear bearing structure.

11. A rail grinding unit according to claim 10, wherein: the lifting driving mechanism (6) adopts a lifting cylinder, the deflection driving mechanism (11) adopts a deflection oil cylinder, and the transverse moving driving mechanism (18) adopts a transverse moving electric cylinder.

12. A rail grinding unit according to claim 1, 2, 3, 4, 5, 6, 8, 9 or 11 wherein: the rail grinding unit can meet the grinding requirement that the grinding motor (7) deflects 75 degrees towards the inner side of the rail (50) to deflect 30 degrees towards the outer side of the rail (50) at any angle.

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