阅读说明：本技术 一种钢轨打磨单元 (Steel rail polishing unit ) 是由 罗旦 王�华 郭平 余高翔 张东方 于 2019-11-25 设计创作，主要内容包括：本发明公开了一种钢轨打磨单元,横移机构一端与导套安装板上的气缸安装座连接,另一端安装于导柱安装座上。两个打磨单元架彼此相对设置并固定于导套安装板下部,打磨电机设置于两个打磨单元架之间。打磨单元架通过偏转销轴与导柱下连接座连接。打磨单元架中设置有偏转机构,偏转机构一端与打磨单元架固定,另一端通过连接块带动偏转销轴。导柱上连接座布置于打磨电机上部,导柱上、下连接座之间设置有下压导柱。下压导柱上套设有下压导套,下压导套固定于打磨电机外部。下压机构一端固定于导柱下连接座或导柱上连接座,另一端与下压导套连接。本发明能够解决现有钢轨打磨单元结构设计不合理,动作的精确性不足,打磨包络角度受限的技术问题。(The invention discloses a steel rail polishing unit, wherein one end of a transverse moving mechanism is connected with a cylinder mounting seat on a guide sleeve mounting plate, and the other end of the transverse moving mechanism is mounted on a guide pillar mounting seat. Two unit framves of polishing set up and are fixed in guide pin bushing mounting panel lower part each other relatively, and the motor of polishing sets up between two unit framves of polishing. The polishing unit frame is connected with the lower connecting seat of the guide pillar through a deflection pin shaft. A deflection mechanism is arranged in the polishing unit frame, one end of the deflection mechanism is fixed with the polishing unit frame, and the other end of the deflection mechanism drives a deflection pin shaft through a connecting block. The connecting seat is arranged on the upper portion of the polishing motor on the guide pillar, and a pressing guide pillar is arranged between the upper connecting seat and the lower connecting seat of the guide pillar. The downward pressing guide sleeve is sleeved on the downward pressing guide pillar and fixed outside the polishing motor. One end of the pressing mechanism is fixed on the lower guide pillar connecting seat or the upper guide pillar connecting seat, and the other end of the pressing mechanism is connected with the pressing guide sleeve. The invention can solve the technical problems of unreasonable structural design, insufficient action accuracy and limited grinding enveloping angle of the conventional steel rail grinding unit.)

1. A rail grinding unit, comprising: the guide sleeve polishing device comprises a guide sleeve mounting plate (1), a guide post upper connecting seat (2), a polishing unit frame (4), a guide post lower connecting seat (5), a transverse guide post (9), a transverse moving mechanism (11), a guide post mounting seat (12), a pressing mechanism (14) and a polishing motor (16); the two guide post mounting seats (12) are arranged opposite to each other and fixed on a frame (30) of the polishing trolley, and the transverse guide post (9) is connected between the two guide post mounting seats (12); the transverse guide pillar (9) is sleeved with a transverse guide sleeve (10), and the transverse guide sleeve (10) is simultaneously fixed on the guide sleeve mounting plate (1); one end of the transverse moving mechanism (11) is connected with a cylinder mounting seat (20) on the guide sleeve mounting plate (1), and the other end of the transverse moving mechanism is mounted on the guide pillar mounting seat (12); the two hollow polishing unit frames (4) are arranged opposite to each other and fixed at the lower part of the guide sleeve mounting plate (1), and the polishing motor (16) is arranged between the two polishing unit frames (4); the lower guide post connecting seat (5) is movably connected between the two polishing unit frames (4) through a deflection pin shaft (7); a deflection mechanism (3) is arranged in the polishing unit frame (4), one end of the deflection mechanism (3) is fixed with the polishing unit frame (4), and the other end drives a deflection pin shaft (7) through a connecting block (17); the guide post upper connecting seat (2) is arranged at the upper part of the polishing motor (16), and a downward pressing guide post (15) is arranged between the guide post upper connecting seat (2) and the guide post lower connecting seat (5); a lower pressing guide sleeve (13) is sleeved on the lower pressing guide post (15), and the lower pressing guide sleeve (13) is fixed outside the polishing motor (16); one end of the pressing mechanism (14) is fixed on the guide post lower connecting seat (5) or the guide post upper connecting seat (2), and the other end is connected with the pressing guide sleeve (13).

2. A rail grinding unit according to claim 1, wherein: the steel rail polishing unit (100) further comprises a grinding wheel connecting disc (6) and a polishing grinding wheel (8), the grinding wheel connecting disc (6) is connected with a rotating shaft of a polishing motor (16), and the polishing grinding wheel (8) is fixed on the grinding wheel connecting disc (6).

3. A rail grinding unit according to claim 1 or 2, wherein: the two transverse guide posts (9) are parallel to each other and symmetrically connected between the two guide post mounting seats (12), and the transverse moving mechanism (11) is arranged between the two transverse guide posts (9); the guide sleeve mounting plate (1) can be directly driven by the movement of the transverse moving mechanism (11), and then the transverse moving guide sleeve (10) is driven to move on the transverse moving guide pillar (9), and finally the polishing motor (16) is driven to move by the polishing unit frame (4), so that polishing of different positions on the surface of the steel rail (50) is realized.

4. A rail grinding unit according to claim 3, wherein: the polishing unit frame (4) comprises two unit plates (23) which are parallel to each other and arranged oppositely, a bolt shaft sleeve (18) is arranged on each unit plate (23), and the two unit plates (23) are fastened in the bolt shaft sleeve (18) through bolts (21) to realize connection and fixation.

5. A rail grinding unit according to claim 1, 2 or 4, wherein: the two deflection mechanisms (3) are respectively arranged in the two polishing unit frames (4), one end of the connecting block (17) is hinged with one end of the deflection mechanism (3), and the other end of the connecting block is fixedly connected with the deflection pin shaft (7); the deflection mechanism (3) drives the deflection pin shaft (7) through the connecting block (17), and then drives the grinding motor (16) to move through the guide pillar lower connecting seat (5), the guide pillar upper connecting seat (2), the lower guide pillar (15) and the lower guide sleeve (13), so that deflection control of the grinding motor (16) is realized.

6. A rail grinding unit according to claim 5, wherein: four pressing guide posts (15) are symmetrically arranged on the periphery of the polishing motor (16) along the center, and two pressing mechanisms (14) are respectively arranged on two opposite sides of the polishing motor (16) and located between the two pressing guide posts (15); the lower end of the pressing mechanism (14) is fixed on the guide post lower connecting seat (5), and the upper end of the pressing mechanism (14) is connected with the pressing guide sleeve (13); the pressing guide sleeve (13) is driven to move on the pressing guide post (15) through the up-and-down movement of the pressing mechanism (14), so that the grinding motor (16) can move up and down, and the grinding and non-grinding state lifting of the surface of the steel rail (50) can be completed.

7. A rail grinding unit according to claim 5, wherein: two downward pressing guide posts (15) are arranged on one side of the polishing motor (16) which moves transversely along the polishing unit frame (4), and a downward pressing mechanism (14) is arranged between the two downward pressing guide posts (15); the other side of the polishing motor (16) which transversely moves along the polishing unit frame (4) is provided with a back connecting plate (22), and the back connecting plate (22) is respectively connected with the guide post upper connecting seat (2) and the guide post lower connecting seat (5); the lower end of the pressing mechanism (14) is fixed on the guide post lower connecting seat (5), and the upper end of the pressing mechanism (14) is connected with the pressing guide sleeve (13); the pressing guide sleeve (13) is driven to move on the pressing guide post (15) through the up-and-down movement of the pressing mechanism (14), so that the grinding motor (16) can move up and down, and the grinding and non-grinding state lifting of the surface of the steel rail (50) can be completed.

8. A rail grinding unit according to claim 1, 2, 4, 6 or 7 wherein: the polishing unit frame (4) is provided with a shaft hole (24), a deflection shaft fixing seat (19) is fixed in the shaft hole (24), and the deflection pin shaft (7) is hinged in the deflection shaft fixing seat (19); one end of the connecting block (17) is fixedly connected with a shaft body (72) of the deflection pin shaft (7), and a shaft neck (71) of the deflection pin shaft (7) is fixedly connected with the lower guide pillar connecting seat (5).

9. A rail grinding unit according to claim 8, wherein: the shaft neck (71) of the deflection pin shaft (7) adopts a square pin head structure and is press-mounted in a square hole of the guide pillar lower connecting seat (5) in an interference manner; the shaft body (72) of the deflection pin shaft (7) is of a cylindrical structure, the part of the deflection pin shaft, which is fixed with the connecting block (17), is of a flat square structure, and the shaft tail (73) of the deflection pin shaft (7) is of a concentric cylindrical structure with the diameter smaller than that of the shaft body (72).

10. A rail grinding unit according to claim 1, 2, 4, 6, 7 or 9 wherein: the deflection mechanism (3) adopts a deflection oil cylinder, the transverse moving mechanism (11) adopts a transverse moving air cylinder, and the pressing mechanism (14) adopts a pressing oil cylinder.

11. A rail grinding unit according to claim 10, wherein: the grinding motor (16) adopts an aluminum shell fan-free motor structure.

12. A rail grinding unit according to claim 1, 2, 4, 6, 7, 9 or 11 wherein: the deflection mechanism (3) adopts a deflection oil cylinder with a displacement sensor mechanism.

Technical Field

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

Background

The grinding trolley is an actuating mechanism for grinding operation, is also a key component and a core operation structure of the steel rail grinding train, and has important position and function on the grinding train. Meanwhile, the grinding action, quality, efficiency, the advancement of the grinding process and the like required by the grinding train are finally embodied by the grinding trolley. The most central part of the grinding trolley is the grinding unit, and the grinding unit directly acts on the steel rail to realize grinding operation, so that the structural design, the reasonability and the action accuracy of the grinding unit are very important.

At present, the steel rail grinding wagon used in China mainly comprises the following grinding units in structural forms.

The first is a PGM-48 type sander grinding unit. According to the polishing unit with the structure, each polishing trolley is provided with four polishing units, two polishing motors are arranged in each polishing unit, each motor is installed between two guide pillars and guide sleeves, and the polishing operation is realized by driving the motors to move up and down through the pressing oil cylinder. In addition, the deflection shaft is matched with the bearing in an installing mode, and a polishing unit consisting of two motors drives a polishing unit frame through a deflection oil cylinder so as to realize integral deflection. 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 rail surface can be formed only by grinding for many times;

(3) each grinding motor is arranged between the two guide columns and the guide sleeve, the stress of the motors is unbalanced, and the rigidity of the whole structure of the grinding unit is relatively weak;

(4) the polishing unit is driven by a deflection oil cylinder, so that the stress on the left side and the right side of the polishing unit is unbalanced easily.

The second type is a grinding unit of the grinding wagon which adopts a parallelogram mechanism pneumatic pressing structure 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, four 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;

(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.

Disclosure of Invention

In view of the above, the present invention provides a rail grinding unit to solve the technical problems of unreasonable structural design, insufficient precision of operation, and limited grinding enveloping angle of the conventional rail 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 pin bushing mounting panel, guide pillar upper junction seat, the unit frame of polishing, guide pillar lower junction seat, sideslip guide pillar, sideslip mechanism, guide pillar mount pad, push down mechanism and the motor of polishing. The two guide pillar mounting seats are arranged opposite to each other and fixed on a frame of the polishing trolley, and the transverse guide pillar is connected between the two guide pillar mounting seats. The transverse guide pillar is sleeved with a transverse guide sleeve, and the transverse guide sleeve is fixed on the guide sleeve mounting plate simultaneously. One end of the transverse moving mechanism is connected with the air cylinder mounting seat on the guide sleeve mounting plate, and the other end of the transverse moving mechanism is mounted on the guide pillar mounting seat. Two polishing unit frames with hollow interiors are arranged oppositely and fixed at the lower part of the guide sleeve mounting plate, and the polishing motor is arranged between the two polishing unit frames. And the lower connecting seat of the guide post is movably connected between the two polishing unit frames through a deflection pin shaft. And a deflection mechanism is arranged in the polishing unit frame, one end of the deflection mechanism is fixed with the polishing unit frame, and the other end of the deflection mechanism drives a deflection pin shaft through a connecting block. The upper guide pillar connecting seat is arranged on the upper portion of the polishing motor, and a pressing guide pillar is arranged between the upper guide pillar connecting seat and the lower guide pillar connecting seat. The pressing guide post is sleeved with a pressing guide sleeve, and the pressing guide sleeve is fixed outside the polishing motor. One end of the pressing mechanism is fixed on the lower guide pillar connecting seat or the upper guide pillar connecting seat, and the other end of the pressing mechanism is connected with the pressing guide sleeve.

Further, the steel rail polishing unit further comprises a grinding wheel connecting disc and a polishing grinding wheel, the grinding wheel connecting disc is connected with a rotating shaft of the polishing motor, and the polishing grinding wheel is fixed on the grinding wheel connecting disc.

Furthermore, the two transverse moving guide posts are parallel to each other and symmetrically connected between the two guide post mounting seats, and the transverse moving mechanism is arranged between the two transverse moving guide posts. The guide sleeve mounting plate can be directly driven by the movement of the transverse moving mechanism, so that the transverse moving guide sleeve is driven to move on the transverse moving guide pillar, and finally, the polishing motor is driven by the polishing unit frame to move, so that polishing of different positions on the surface of the steel rail is realized.

Furthermore, the polishing unit frame comprises two unit plates which are parallel to each other and are arranged oppositely, a bolt shaft sleeve is arranged on each unit plate, and the two unit plates are fastened in the bolt shaft sleeve through bolts to realize connection and fixation.

Furthermore, two deflection mechanisms are respectively arranged in the two polishing unit frames, one end of the connecting block is hinged with one end of each deflection mechanism, and the other end of the connecting block is fixedly connected with the deflection pin shaft. The deflection mechanism drives the deflection hinge pin through the connecting block, and then drives the polishing motor to move through the lower guide pillar connecting seat, the upper guide pillar connecting seat, the lower guide pillar and the lower guide sleeve, so that deflection control of the polishing motor is realized.

Furthermore, four pressing guide pillars are symmetrically arranged on the periphery of the polishing motor along the center, and two pressing mechanisms are respectively arranged on two opposite sides of the polishing motor and located between the two pressing guide pillars. The lower end of the pressing mechanism is fixed on the guide pillar lower connecting seat, and the upper end of the pressing mechanism is connected with the pressing guide sleeve. The up-and-down movement of the pressing mechanism drives the pressing guide sleeve to move on the pressing guide post, so that the grinding motor can move up and down, and the grinding and non-grinding of the surface of the steel rail can be completed.

Furthermore, one side of the polishing motor, which moves transversely along the polishing unit frame, is provided with two downward pressing guide pillars, and the downward pressing mechanism is arranged between the two downward pressing guide pillars. The polishing motor is provided with a back connecting plate along the other side of the transverse movement of the polishing unit frame, and the back connecting plate is connected with the guide pillar upper connecting seat and the guide pillar lower connecting seat respectively. The lower end of the pressing mechanism is fixed on the guide pillar lower connecting seat, and the upper end of the pressing mechanism is connected with the pressing guide sleeve. The up-and-down movement of the pressing mechanism drives the pressing guide sleeve to move on the pressing guide post, so that the grinding motor can move up and down, and the grinding and non-grinding of the surface of the steel rail can be completed.

Furthermore, a shaft hole is formed in the polishing unit frame, a deflection shaft fixing seat is fixed in the shaft hole, and the deflection hinge pin is hinged in the deflection shaft fixing seat. One end of the connecting block is fixedly connected with the shaft body of the deflection pin shaft, and the shaft neck of the deflection pin shaft is fixedly connected with the lower guide pillar connecting seat.

Furthermore, the shaft neck of the deflection pin shaft adopts a square pin head structure and is press-mounted in a square hole of the guide pillar lower connecting seat in an interference manner. The shaft body of the deflection pin shaft is of a cylindrical structure, the part of the deflection pin shaft fixed with the connecting block is of a flat square structure, and the shaft tail of the deflection pin shaft is of a concentric cylindrical structure with the diameter smaller than that of the shaft body.

Furthermore, the deflection mechanism adopts a deflection oil cylinder, the transverse moving mechanism adopts a transverse moving air cylinder, and the pressing mechanism adopts a pressing oil cylinder.

Furthermore, the grinding motor adopts an aluminum shell fanless motor structure.

Furthermore, the deflection mechanism adopts a deflection oil cylinder with a displacement sensor mechanism.

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 steel rail polishing unit comprises the transverse moving mechanism, the pressing mechanism and the deflection mechanism, is reasonable in structural design, high in action accuracy, unlimited in overall polishing envelope angle and capable of forming full coverage of a rail surface;

(2) according to the rail polishing unit, the four parallel guide pillars and the double-pressing-down oil cylinder mechanism are adopted, and compared with the original double-guide pillar and single-oil cylinder mechanism, the technical problems that the traditional polishing unit and a motor are too large in vibration, unbalanced in two-point stress and lower in structural rigidity can be effectively solved;

(3) according to the steel rail polishing unit, the deflection mechanism adopts a structure that the double deflection oil cylinders are provided with the displacement sensors, so that the angle deflection is more stable, the response speed is higher, and meanwhile, the risk of failure of the single deflection rotating shaft oil cylinder can be effectively avoided;

(4) according to the steel rail polishing unit, the interference press-fitting design of the square hole of the deflection pin shaft is adopted, so that the vibration of a motor caused by the problem of clearance in the traditional bearing installation mode can be effectively avoided, and the polishing quality can be greatly improved;

(5) compared with a transverse oil cylinder mode, the rail polishing unit has better flexibility and stronger rail falling prevention capability by adopting the transverse air cylinder design, can stabilize the running of a vehicle, and can effectively improve the rail polishing quality while realizing the large-range coverage of the polishing angle;

(6) according to the steel rail polishing unit, the polishing motor is designed in an aluminum shell without a fan, so that the lightweight design of the polishing unit can be realized, meanwhile, the influence of iron dust on the motor can be effectively avoided, and the service life of the motor is prolonged;

(7) the rail polishing unit disclosed by the invention adopts an open structural design, and the maintenance performance of the polishing unit and the polishing motor 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 perspective view of one embodiment of a rail grinding unit according to the present invention;

FIG. 2 is a schematic perspective view of an embodiment of a rail grinding unit according to the present invention from another perspective;

FIG. 3 is a schematic perspective view of a rail grinding unit according to an embodiment of the present invention from a third perspective;

FIG. 4 is a schematic view of the internal structure of a grinding unit carrier in one embodiment of the rail grinding unit of the present invention;

FIG. 5 is a schematic cross-sectional view of the joint of the deflector pin in an embodiment of the rail grinding unit of the present invention;

FIG. 6 is a schematic perspective view of a deflector pin according to an embodiment of the rail grinding unit of the present invention;

FIG. 7 is a schematic perspective view of another embodiment of a rail grinding unit according to the present invention;

FIG. 8 is a schematic perspective view of a third embodiment of a rail grinding unit according to the present invention from a rear perspective;

FIG. 9 is a schematic illustration of the mounting arrangement of one embodiment of the rail grinding unit of the present invention;

in the figure: 1-guide bush mounting plate, 2-guide bush upper connecting seat, 3-deflection mechanism, 4-grinding unit holder, 5-guide bush lower connecting seat, 6-grinding wheel connecting plate, 7-deflection pin, 71-journal, 72-shaft body, 73-shaft tail, 8-grinding wheel, 9-transverse guide bush, 10-transverse guide bush, 11-transverse mechanism, 12-guide bush mounting seat, 13-press guide bush, 14-press mechanism, 15-press guide bush, 16-grinding motor, 17-connecting block, 18-bolt shaft sleeve, 19-deflection shaft fixing seat, 20-cylinder mounting seat, 21-bolt, 22-back connecting plate, 23-unit plate, 24-shaft hole, 30-carriage, 40-running wheel, 50-rail, 100-rail grinding unit.

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 9 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 9, an embodiment of a rail grinding unit 100, the rail grinding unit 100, specifically includes: the device comprises a guide sleeve mounting plate 1, a guide post upper connecting seat 2, a deflection mechanism 3, a polishing unit frame 4, a guide post lower connecting seat 5, a deflection pin 7, a transverse guide post 9, a transverse guide sleeve 10, a transverse mechanism 11, a guide post mounting seat 12, a lower guide sleeve 13, a lower pressing mechanism 14, a lower pressing guide post 15, a polishing motor 16 and a connecting block 17. The two guide post mounting seats 12 are arranged opposite to each other and fixed on a frame 30 of the polishing trolley, and the transverse guide post 9 is connected between the two guide post mounting seats 12. The transverse guide pillar 9 is sleeved with a transverse guide sleeve 10, and the transverse guide sleeve 10 is fixed on the guide sleeve mounting plate 1. One end of the traversing mechanism 11 is connected with the cylinder mounting seat 20 on the guide sleeve mounting plate 1, and the other end is mounted on the guide pillar mounting seat 12. Two polishing unit frames 4 with hollow interiors are arranged opposite to each other and fixed at the lower part of the guide bush mounting plate 1, and a polishing motor 16 is arranged between the two polishing unit frames 4. The polishing unit frames 4 are connected with the guide pillar lower connecting seats 5 through the deflection pin shafts 7 (the guide pillar lower connecting seats 5 are movably connected between the bottoms of the two polishing unit frames 4 through the deflection pin shafts 7). The polishing unit frame 4 is internally provided with a deflection mechanism 3, one end of the deflection mechanism 3 is fixed with the polishing unit frame 4, and the other end of the deflection mechanism drives a deflection pin 7 through a connecting block 17. The guide post upper connecting seat 2 is arranged on the upper portion of the polishing motor 16, and a pressing guide post 15 is arranged between the guide post upper connecting seat 2 and the guide post lower connecting seat 5. The lower pressing guide sleeve 13 is sleeved on the lower pressing guide post 15, and the lower pressing guide sleeve 13 is fixed outside the polishing motor 16. One end of the pressing mechanism 14 is fixed to the guide post lower connecting seat 5 (as shown in fig. 7, one end of the pressing mechanism 14 can also be fixed to the guide post upper connecting seat 2, and it should be noted that the problem of dust and iron dust accumulation and pollution caused by the upside-down mounting of the pressing mechanism 14 at this time), and the other end is connected with the pressing guide sleeve 13 (the polishing motor 16 is connected with the bolt hole on the pressing guide sleeve 13 through the bolt, so that the up-and-down movement of the pressing mechanism 14 directly drives the pressing guide sleeve 13 to move on the pressing guide post 15, thereby realizing the up-and-down movement of the polishing. The steel rail polishing unit 100 further comprises a grinding wheel connecting disc 6 and a polishing grinding wheel 8, the grinding wheel connecting disc 6 is connected with a rotating shaft of the polishing motor 16, and the polishing grinding wheel 8 is fixed on the grinding wheel connecting disc 6. The rail grinding unit 100 according to the embodiment of the present invention is provided with a traversing, pressing and deflecting mechanism, and can grind the main line of the rail, the switch, and other lines.

As shown in fig. 1, two traverse guide posts 9 are further connected in parallel and symmetrically between two guide post mounting seats 12, and a traverse mechanism 11 is disposed between the two traverse guide posts 9. The guide sleeve mounting plate 1 can be directly driven by the movement of the transverse moving mechanism 11, so that the transverse moving guide sleeve 10 is driven to move on the transverse moving guide post 9 along the L direction shown in the attached drawing 1, and finally the polishing motor 16 is driven to move through the polishing unit frame 4, so that the polishing of different positions on the surface of the steel rail 50 is realized. As a preferred embodiment of the present invention, the traverse mechanism 11 employs a traverse cylinder. Compare in sideslip hydro-cylinder form, the structural design flexibility of sideslip cylinder is stronger, has stronger anti-falling rail ability, can stabilize vehicle and walk, when realizing the angle of polishing covering on a large scale, can effectively promote the rail quality of polishing.

The polishing unit frame 4 further comprises two unit plates 23 which are parallel to each other and are arranged oppositely, a bolt shaft sleeve 18 is arranged on each unit plate 23, the two unit plates 23 are fastened in the bolt shaft sleeve 18 through bolts 21 to be connected and fixed, the connection is stable and deformation-free in this way, and the design of a polishing unit frame welding tool is avoided, as shown in the attached drawing 4. The two deflection mechanisms 3 are respectively arranged in the two polishing unit frames 4, one end of the connecting block 17 is hinged with one end of the deflection mechanism 3, and the other end of the connecting block is fixedly connected with the deflection pin shaft 7. The deflection mechanism 3 drives the deflection pin 7 through the connecting block 17, and then drives the grinding motor 16 to move along the W direction shown in the attached drawing 1 through the guide pillar lower connecting seat 5, the guide pillar upper connecting seat 2, the lower pressing guide pillar 15 and the lower pressing guide sleeve 13, so that the deflection control of the grinding motor 16 is realized. As a preferred embodiment of the present invention, the deflection mechanism 3 further employs a deflection cylinder with a displacement sensor mechanism, so that the angular deflection is more stable, the response speed is faster, and the risk of failure of the single-deflection-shaft cylinder can be effectively avoided. It should be noted that, one deflection oil cylinder may be adopted, and the problem of synchronization of two deflection oil cylinders does not need to be considered when one deflection oil cylinder is driven, but the deflection stress of the rail grinding unit is more balanced when the two deflection oil cylinders are driven.

In this embodiment, four pressing guide posts 15 are further symmetrically arranged on the periphery of the grinding motor 16 along the center, and two pressing mechanisms 14 are respectively arranged on two opposite sides of the grinding motor 16 and between the two pressing guide posts 15. The lower end of the pressing mechanism 14 is fixed on the guide post lower connecting seat 5, and the upper end of the pressing mechanism 14 is connected with the pressing guide sleeve 13. The up-and-down movement of the pressing mechanism 14 drives the pressing guide sleeve 13 to move on the pressing guide post 15 along the direction H as shown in fig. 1, so that the grinding motor 16 moves up and down to complete the grinding and non-grinding lifting of the surface of the steel rail 50. As a preferred embodiment of the present invention, the pressing mechanism 14 further employs a pressing cylinder. This embodiment adopts the structural design of four parallel guide pillars, two push down hydro-cylinders, can effectively solve traditional rail unit of polishing and the motor vibration of polishing too big, the lower technical problem of structural rigidity, can promote the quality of polishing betterly.

As another embodiment of the present invention, unlike the design of the four parallel guide post and double push-down cylinder structure, the two push-down guide posts 15 on the back of the rail grinding unit 100 are replaced with a connecting plate structure (i.e., the back connecting plate 22) to be used as a position for installing the motor junction box. The back connecting plate 22 is connected with the guide post upper connecting seat 2 and the guide post lower connecting seat 5 through bolts respectively, only two downward pressing guide posts 15 are adopted on the front side, and a downward pressing oil cylinder is arranged between the two downward pressing guide posts 15, so that the position for installing the motor junction box can be reserved on the back side. As shown in fig. 8, two hold-down guide posts 15 are further provided at a side of the traverse of the grinding motor 16 along the grinding unit frame 4, and the hold-down mechanism 14 is provided between the two hold-down guide posts 15. The lower end of the pressing mechanism 14 is fixed on the guide post lower connecting seat 5, and the upper end of the pressing mechanism 14 is connected with the pressing guide sleeve 13. The up-and-down movement of the pressing mechanism 14 drives the pressing guide sleeves 13 to move on the two pressing guide pillars 15, so that the grinding motor 16 moves up and down, and the grinding and non-grinding of the surface of the steel rail 50 are completed. The other side of the polishing motor 16, which moves transversely along the polishing unit frame 4, is provided with a back connecting plate 22, and the back connecting plate 22 is connected with the guide pillar upper connecting seat 2 and the guide pillar lower connecting seat 5 respectively. The lower mounting seat of the pressing oil cylinder 14 is fixed on the guide post lower connecting seat 5, so that the lower end of the pressing mechanism 14 is fixedly connected with the guide post lower connecting seat 5. The upper end of the pressing mechanism 14 is connected with the pressing guide sleeve 13. Connecting seat 2, connecting seat 5 under the guide pillar, push down guide pillar 15 on the guide pillar to and back connecting plate 22 link firmly together, drive through the up-and-down motion of pushing down mechanism 14 and push down guide pin bushing 13 and follow the motion as shown in the H direction of attached figure 1 on pushing down guide pillar 15 to realize polishing motor 16 reciprocate, in order to accomplish the promotion to the polishing and the non-state of polishing on the rail surface. As a preferred embodiment of the present invention, the pressing mechanism 14 further employs a pressing cylinder.

As shown in fig. 5, the grinding unit frame 4 is provided with a shaft hole 24, the deflection shaft fixing seat 19 is fixed in the shaft hole 24, and the deflection pin 7 is hinged in the deflection shaft fixing seat 19. One end of the connecting block 17 is fixedly connected with a shaft body 72 of the deflection pin 7, and a shaft neck 71 of the deflection pin 7 is fixedly connected with the lower guide pillar connecting seat 5. As shown in fig. 6, the shaft neck 71 of the deflection pin 7 is formed by a square pin head structure and is press-fitted into a (square) mounting hole of the guide post lower connecting seat 5 by interference (other pin head structures may be used to limit the rotation of the pin head in the mounting hole). The shaft body 72 of the deflecting pin 7 is a cylindrical structure, the part of the deflecting pin 7 fixed with the connecting block 17 adopts a flat square structure (other structures can also be adopted to limit the deflecting pin 7 to rotate in a hole fixed with the connecting block 17), and the shaft tail 73 of the deflecting pin 7 adopts a concentric cylindrical structure with a diameter smaller than that of the shaft body 72. The deflecting pin 7 can be fixed by adopting a nut-washer, rivet, pin and other connection modes. In the conventional steel rail grinding unit, the deflection shaft is basically connected and deflected by using a bearing, but the connection between the bearing and the deflection shaft always has a gap of more than two wires, and the gap can amplify the vibration effect during grinding to influence the grinding quality. According to the rail grinding unit described in the specific embodiment of the invention, a deflection pin shaft 7 with a square pin head is adopted instead of a deflection bearing, the guide pillar lower connecting seat 5 is also provided with a square hole, and the deflection pin shaft 7 with the square pin head is pressed into the square hole of the guide pillar lower connecting seat 5 in a small and excessive manner, so that the connection gap is avoided, the vibration problem caused by the structure installation gap during grinding is further controlled, and the grinding quality influence caused by vibration is effectively avoided.

Traditional rail unit of polishing, the purpose of the design of motor area fan of polishing is in order to accelerate motor cooling, but because take the fan to adsorb into thereby leading to the motor of polishing inefficacy of a large amount of dust iron fillings of polishing very easily. In the embodiment of the invention, the grinding motor 16 adopts an aluminum shell fanless motor structure, so that the lightweight design of the steel rail grinding unit is effectively realized, the self-cooling effect of the grinding motor is better due to the self-structural design of the grinding motor, the influence of scrap iron and dust on the grinding motor is effectively avoided, and the service life of the grinding motor is greatly prolonged.

The rail grinding unit 100 described in the embodiment of the present invention adopts an open structural design, and when the grinding motor 16 needs to be maintained and replaced, the grinding motor 16 can be detached and maintained only by deflecting the grinding motor 16 to a certain angle toward the outer side of the rail and then removing the connecting seat 2 on the guide post, thereby realizing the rapid and convenient maintenance of the grinding motor.

It should be particularly noted that, on the basis of reasonable structural design and arrangement and reliable process machining and assembly, the two, three or four pressing guide posts 15 and the four pressing guide sleeves 13 can be selected, the stress is most balanced when the four pressing guide posts are selected (but the problem of motion synchronism needs to be solved), and the motor junction box can be conveniently installed when the two pressing guide posts are selected (but the problem of stress balance needs to be solved). Although the transverse moving cylinder can be replaced by a transverse moving oil cylinder or a transverse moving electric cylinder, and the pressing oil cylinder and the deflecting oil cylinder can be replaced by an air cylinder or an electric cylinder, the whole polishing operation effect is inferior to the preferable technical scheme provided by the above specific embodiment of the invention.

The specific embodiment of the invention provides a novel grinding unit device structure of a steel rail grinding wagon, which has the design of a pressing mechanism, a deflecting mechanism and a traversing mechanism, can meet the grinding requirement of a railway main line, and can also be used for grinding turnouts; the posture of the polishing motor can be independently controlled, the polishing angle range is wide, the arrangement is flexible, and the full coverage of the rail surface can be formed; the parallel guide pillar and the pressing oil cylinder structure can effectively solve the technical problems of low rigidity, poor stability and the like of the traditional steel rail polishing unit; the deflection structure design effectively controls the vibration problem caused by the structure installation clearance during grinding, and avoids the influence of vibration on the grinding quality of the steel rail.

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 comprises the transverse moving mechanism, the pressing mechanism and the deflecting mechanism, has reasonable structural design and high action accuracy, is not limited by the whole polishing envelope angle, and can form full coverage of a rail surface;

(2) the steel rail polishing unit described in the specific embodiment of the invention adopts four parallel guide pillars and a double-pressing oil cylinder mechanism, and compared with the original double-guide pillar and single-oil cylinder mechanism, the steel rail polishing unit can effectively solve the technical problems that the traditional polishing unit and a motor have overlarge vibration, unbalanced two-point stress and lower structural rigidity;

(3) according to the steel rail polishing unit described in the specific embodiment of the invention, the deflection mechanism adopts a structure that the double deflection oil cylinders are provided with the displacement sensors, so that the angle deflection is more stable, the response speed is higher, and meanwhile, the risk of failure of the oil cylinder with the single deflection shaft can be effectively avoided;

(4) according to the steel rail polishing unit described in the specific embodiment of the invention, the deflection pin shaft square hole interference press-fitting design is adopted, so that the motor vibration caused by the gap problem in the traditional bearing installation mode can be effectively avoided, and the polishing quality can be greatly improved;

(5) the rail polishing unit described in the specific embodiment of the invention adopts the design of the transverse moving cylinder, has better flexibility and stronger rail falling prevention capability compared with a transverse moving oil cylinder mode, can stabilize the running of a vehicle, and can effectively improve the rail polishing quality while realizing large-range coverage of a polishing angle;

(6) according to the steel rail polishing unit described in the specific embodiment of the invention, the polishing motor adopts an aluminum shell fan-free design, so that the light weight design of the polishing unit can be realized, meanwhile, the influence of iron dust on the motor can be effectively avoided, and the service life of the motor is prolonged;

(7) the rail grinding unit described in the specific embodiment of the invention adopts an open structural design, and can effectively improve the maintenance performance of the grinding unit and the grinding motor.

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.