阅读说明：本技术 钢轨磨削系统及钢轨铣磨车 (Steel rail grinding system and steel rail milling and grinding vehicle ) 是由 宋文明 曹佐权 蔡昌胜 王世海 李明 陶桐 于 2020-05-14 设计创作，主要内容包括：本申请实施例提供一种钢轨磨削系统及钢轨铣磨车,所述钢轨磨削系统用于对待磨削钢轨进行磨削作业；所述钢轨磨削系统包括：磨削装置和整修装置；所述磨削装置包括：砂轮和用于驱动砂轮旋转的砂轮驱动组件；所述整修装置包括：整修刀具和用于驱动整修刀具沿砂轮径向方向移动的刀具进给组件；当整修刀具朝向砂轮移动至与砂轮的外圆周面接触后对砂轮的外圆周面进行整修；所述整修刀具中用于与砂轮接触的整修面形状与待磨削钢轨轨头的外表面形状一致。本申请实施例提供的钢轨磨削系统及钢轨铣磨车,能够在进行磨削作业之前对砂轮进行整修,使其适应钢轨轨头的外表面形状,提高磨削质量。(The embodiment of the application provides a steel rail grinding system and a steel rail milling and grinding vehicle, wherein the steel rail grinding system is used for grinding a steel rail to be ground; the rail grinding system includes: a grinding device and a truing device; the grinding device includes: the grinding wheel and a grinding wheel driving component are used for driving the grinding wheel to rotate; the refurbishing apparatus comprising: a dressing tool and a tool feed assembly for driving the dressing tool to move in a radial direction of the grinding wheel; when the trimming cutter moves towards the grinding wheel to be in contact with the outer circumferential surface of the grinding wheel, trimming the outer circumferential surface of the grinding wheel; the shape of a truing surface of the truing tool, which is used for being in contact with the grinding wheel, is consistent with the shape of the outer surface of the rail head of the steel rail to be ground. The steel rail grinding system and the steel rail milling and grinding vehicle provided by the embodiment of the application can be used for truing the grinding wheel before grinding operation, so that the grinding wheel adapts to the shape of the outer surface of a steel rail head, and the grinding quality is improved.)

1. A rail grinding system is used for grinding a rail to be ground; it is characterized by comprising: a grinding device and a truing device;

the grinding device includes: the grinding wheel and a grinding wheel driving component are used for driving the grinding wheel to rotate;

the refurbishing apparatus comprising: a dressing tool and a tool feed assembly for driving the dressing tool to move in a radial direction of the grinding wheel; when the trimming cutter moves towards the grinding wheel to be in contact with the outer circumferential surface of the grinding wheel, trimming the outer circumferential surface of the grinding wheel; the shape of a truing surface of the truing tool, which is used for being in contact with the grinding wheel, is consistent with the shape of the outer surface of the rail head of the steel rail to be ground.

2. A rail grinding system as defined in claim 1 further comprising: the grinding wheel protective cover is arranged on the grinding device; the grinding wheel protective cover is covered outside the grinding wheel; the cutter feeding assembly is arranged on the grinding wheel protective cover.

3. A rail grinding system as defined in claim 2 wherein said truing means further comprises: a tool moving assembly and a guide assembly;

the guide assembly includes: the first guide structure is arranged on the grinding wheel protective cover; the second guide structure is connected with the first guide structure and can slide relative to the first guide structure;

the cutter feeding assembly and the cutter moving assembly are respectively connected with the second guide structure, and the cutter feeding assembly is used for driving the second guide structure to slide and driving the cutter moving assembly to move along the radial direction of the grinding wheel.

4. A rail grinding system as defined in claim 3 wherein said tool moving assembly includes:

the guide pillar mounting seat is connected with the second guide structure;

the guide seat is connected with the grinding wheel protective cover; the guide seat is provided with a guide hole;

a tool mounting seat, the outer end part of which is provided with the dressing tool;

the guide post is movably arranged in the guide hole in a penetrating way; one end of the guide post is connected with the guide post mounting seat, and the other end of the guide post is connected with the inner side end of the cutter mounting seat.

5. A rail grinding system as claimed in claim 4 wherein the pilot holes are circular holes, the number of the pilot holes is two, and the center lines of the two pilot holes are parallel and extend in the radial direction of the grinding wheel; the guide posts are cylindrical, and the number of the guide posts is two, and the two guide posts are respectively inserted into one guide hole;

one end of the two guide columns far away from the trimming cutter is connected to the guide column mounting seat, and the other ends of the two guide columns are connected to the cutter mounting seat.

6. A rail grinding system as defined in claim 3 wherein said tool feed assembly includes:

the screw rod is provided with an external thread;

the hand wheel is fixedly connected with one end of the screw rod;

the handle is connected with the hand wheel;

the screw rod fixing seat is fixed on the first guide structure; the screw rod fixing seat is provided with a screw rod through hole;

the threaded sleeve is arranged in the screw rod through hole; the thread sleeve is provided with an internal thread which is matched with the external thread of the screw rod;

the screw rod connecting seat is fixed on the second guide structure; the screw rod connecting seat is provided with a screw rod connecting hole, and the other end of the screw rod is connected with the nut after penetrating through the screw rod connecting hole.

7. A rail grinding system as defined in claim 3 wherein said tool feed assembly includes: the pneumatic driving device comprises a pneumatic driving cylinder and a driving rod, wherein one end of the driving rod is connected with the pneumatic driving cylinder, and the other end of the driving rod is connected with a cutter moving assembly.

8. A rail grinding system as defined in claim 3 wherein said tool feed assembly includes: the cutter moving device comprises a hydraulic driving cylinder and a driving rod, wherein one end of the driving rod is connected with the hydraulic driving cylinder, and the other end of the driving rod is connected with a cutter moving assembly.

9. A rail grinding system as defined in claim 3 wherein said first guide assembly includes: a slide rail and a slide rail fixing member; the slide rail fixing piece is fixed on the grinding wheel protective cover; the sliding rail is arranged on the sliding rail fixing part and extends along the radial direction of the grinding wheel;

the second guide assembly includes: a slider and a mounting plate; the sliding block is arranged on the sliding rail in a sliding manner; the slider is arranged on one side surface of the mounting plate, and the cutter feeding assembly and the cutter moving assembly are arranged on the other side surface of the mounting plate.

10. A rail grinding system as defined in claim 1 further comprising: and the stroke protection mechanism is arranged on the trimming device and used for detecting whether the trimming cutter moves in place or not.

11. A rail grinding system as defined in claim 10 wherein said travel protection mechanism includes: the device comprises a travel switch for triggering the position operation after the trimming cutter moves to a limited position, a limiting block for limiting the movement of the trimming cutter, and a position sensor for detecting the movement position of the trimming cutter.

12. A rail grinding system as claimed in claim 3 wherein the centre line of rotation of the grinding wheel is parallel to the plane formed by the top faces of the two rails; the grinding wheel protective cover comprises: a fixed shield and a movable shield;

the fixed protective cover is arranged on the grinding device, and a linear guide structure is arranged between the fixed protective cover and the movable protective cover so that the movable protective cover can move in the vertical direction relative to the fixed protective cover; the cutter feeding assembly drives the cutter moving assembly to move above the outer circumferential surface of the grinding wheel along the center direction of the grinding wheel.

13. A rail grinding system as defined in claim 2 wherein said grinding wheel drive assembly includes: the main shaft mounting seat, the main shaft driving piece and the main shaft;

the main shaft is arranged on the main shaft mounting seat and is rotationally connected with the main shaft mounting seat; one end of the main shaft is connected with the grinding wheel, and the other end of the main shaft is connected with the main shaft driving part.

14. A rail grinding system as defined in claim 13 wherein the spindle drive includes: the driving wheel, the driven wheel, the belt and the driving motor;

the axes of the driving wheel and the driven wheel are parallel, the belt is arranged on the driving wheel and the driven wheel, and the driving motor is connected with the driving wheel and used for driving the driving wheel to rotate.

15. A rail grinding system as claimed in claim 1, 2 or 13 further comprising: the device comprises a base, a movable slide carriage, a vertical guide device and a horizontal guide device; the base is arranged on the steel rail milling and grinding vehicle;

the moving slide carriage is connected with the base through a horizontal guide device so that the moving slide carriage can move in the horizontal direction relative to the base;

the grinding device is connected to the moving carriage via vertical guides so that the grinding device can be moved in the vertical direction relative to the moving carriage.

16. A rail grinding system as claimed in claim 1 wherein said grinding means and dressing means are each two in number, one dressing means for dressing a grinding wheel in one grinding means; the two grinding devices are arranged symmetrically along the transverse direction and are used for grinding the two steel rails.

17. A rail milling and grinding vehicle is characterized by comprising: a rail grinding system as claimed in any one of claims 1 to 16.

Technical Field

The application relates to a railway maintenance technology, in particular to a steel rail grinding system and a steel rail milling and grinding vehicle.

Background

The rail vehicle is an important traffic tie connecting cities, is gradually a main vehicle in the cities, and is also a main carrier for realizing goods transportation. Wheels of the rail vehicle travel along the rails, the rails bear all loads of the rail vehicle, contact fatigue occurs on the surfaces of the rails, and various damages occur. A rail milling and grinding vehicle is a novel rail on-line repairing device, a milling device and a grinding device are arranged on the rail milling and grinding vehicle, and damages on the surface of a rail are removed correspondingly by adopting a circumferential milling and circumferential grinding mode. In the operation process, firstly, the milling device is adopted to mill the steel rail on line, then the grinding wheel in the grinding device rotates at high speed to grind the surface of the steel rail, the milling cutter trace remained on the surface of the steel rail after the milling operation is removed, the smoothness and the surface quality of the steel rail are further improved, and the noise of the wheel rail is reduced.

Because the outer arc surface of the new grinding wheel is not matched with the outline shape of the outer surface of the rail head of the steel rail, only a small sharp part of the outer arc surface of the grinding wheel is contacted with the rail head of the steel rail to participate in grinding in the initial operation stage. With the continuous grinding operation, the outer arc surface of the grinding wheel is continuously worn and gradually matched with the outer surface shape of the rail head of the steel rail, and then the grinding wheel can envelop the rail head of the steel rail to achieve an effective grinding effect. The outer surface of the steel rail at the present time has a trace which is as long as tens of meters, has a width deviating from the correct light band range of the steel rail, has a depth larger than the ideal grinding depth and extends longitudinally along the surface of the steel rail, so that the longitudinal smoothness precision and the transverse profile precision of the steel rail do not reach the standard, even the surface of the steel rail is seriously bluing, and the service life of the steel rail is influenced.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides a steel rail grinding system and a steel rail milling and grinding vehicle.

The embodiment of the first aspect of the application provides a steel rail grinding system, which is used for grinding a steel rail to be ground; the method comprises the following steps: a grinding device and a truing device;

the grinding device includes: the grinding wheel and a grinding wheel driving component are used for driving the grinding wheel to rotate;

the refurbishing apparatus comprising: a dressing tool and a tool feed assembly for driving the dressing tool to move in a radial direction of the grinding wheel; when the trimming cutter moves towards the grinding wheel to be in contact with the outer circumferential surface of the grinding wheel, trimming the outer circumferential surface of the grinding wheel; the shape of a truing surface of the truing tool, which is used for being in contact with the grinding wheel, is consistent with the shape of the outer surface of the rail head of the steel rail to be ground.

The embodiment of the second aspect of this application provides a rail milling and grinding car includes: a rail grinding system as described above.

According to the technical scheme provided by the embodiment of the application, a grinding device and a dressing device are arranged, wherein the grinding device comprises a grinding wheel and a grinding wheel driving component for driving the grinding wheel to rotate; the repairing device comprises a repairing cutter and a cutter feeding assembly for driving the repairing cutter to move along the radial direction of the grinding wheel, the shape of the repairing surface of the repairing cutter is consistent with the shape of the outer surface of the rail head of the steel rail to be ground, and in the moving process of the repairing cutter, the outer circumferential surface of the grinding wheel is repaired to be capable of coating the rail head of the steel rail, so that the rail head of the steel rail is effectively ground, and the service life of the steel rail is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a front view of a grinding apparatus and a truing apparatus in a rail grinding system according to an embodiment of the present application;

FIG. 2 is a front view of a truing apparatus in a rail grinding system according to an embodiment of the present application;

FIG. 3 is a front view of a grinding device in a rail grinding system according to an embodiment of the present disclosure;

FIG. 4 is a left side view of a grinding apparatus and a truing apparatus of a rail grinding system according to an embodiment of the present application;

FIG. 5 is an enlarged view of area A of FIG. 4;

FIG. 6 is a front view of a tool moving assembly of the rail grinding system provided by an embodiment of the present application;

FIG. 7 is a left side view of a tool moving assembly of the rail grinding system provided by an embodiment of the present application;

fig. 8 is a schematic structural diagram of a rail grinding system provided by the embodiment of the application and used for grinding rails on two sides.

Reference numerals:

1-a grinding device; 11-a grinding wheel; 12-a spindle mount; 13-a main shaft drive; 14-a main shaft; 15-grinding wheel fixing seat;

2-a refurbishing device; 21-a dressing tool; 221-a slide rail; 222-a slide mount; 223-a slider; 224-a mounting plate; 231-a screw rod; 232-hand wheel; 233-handle; 234-screw rod fixing seat; 235-a threaded sleeve; 236-a lead screw connection seat; 237-nut; 241-guide pillar mounting seats; 242-a guide seat; 243-tool mounting seat; 244-guide posts;

3-grinding wheel protective cover;

4-steel rail.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The embodiment provides a rail grinding system, which can be applied to a rail milling and grinding vehicle to grind rails. The rail milling and grinding vehicle may include a milling system for performing a milling operation on the rail and a grinding system for performing a grinding operation on the rail. The milling system can adopt the technical means existing in the field, and the embodiment does not need to be explained in detail and does not limit the implementation mode. The present embodiment will be described specifically only with respect to the structure relating to the operation of the grinding system.

The grinding system comprises a grinding wheel used for carrying out grinding processing on the steel rail so as to enable the shape of the rail head of the steel rail to meet the requirement. The steel rail grinding system provided by the embodiment can be used for repairing the grinding wheel, so that the grinding wheel is adaptive to the outer surface shape of the steel rail head, and the grinding effect is improved.

Fig. 1 is a front view of a grinding device and a truing device in a rail grinding system according to an embodiment of the present application, fig. 2 is a front view of a truing device in a rail grinding system according to an embodiment of the present application, fig. 3 is a front view of a grinding device in a rail grinding system according to an embodiment of the present application, fig. 4 is a left side view of a grinding device and a truing device in a rail grinding system according to an embodiment of the present application, and fig. 5 is an enlarged view of a region a in fig. 4. As shown in fig. 1 to 5, the rail grinding system according to the present embodiment includes: a grinding device 1 and a dressing device 2.

The grinding device 1 comprises a grinding wheel 11 and a grinding wheel driving assembly, wherein the grinding wheel driving assembly is used for driving the grinding wheel 11 to rotate.

The truing apparatus 2 includes: a dressing tool 21 and a tool feed assembly for driving the dressing tool 21 to move in a radial direction of the grinding wheel 11, and dressing the outer circumferential surface of the grinding wheel 11 after moving toward the grinding wheel 11 to contact the outer circumferential surface of the grinding wheel 11. The shape of the truing face of the truing tool 21 for contact with the grinding wheel 11 corresponds to the shape of the outer surface of the rail head of the rail to be ground.

Before the rail is ground, the grinding wheel 11 is dressed by the dressing device 2. First, the grinding wheel 11 is driven to rotate by the grinding wheel drive assembly. Then the trimming cutter 21 is driven to move by the cutter feeding assembly, trimming is started when the trimming cutter 21 moves to be in contact with the outer circumferential surface of the grinding wheel 11, and the outer circumferential surface of the grinding wheel 11 is trimmed to be matched with the shape of the outer surface of the rail head of the steel rail along with the moving process of the trimming cutter 21, so that the grinding wheel 11 can be coated on the rail head of the steel rail.

According to the technical scheme provided by the embodiment, a grinding device and a dressing device are arranged on a vehicle body, wherein the grinding device comprises a grinding wheel and a grinding wheel driving component for driving the grinding wheel to rotate; the repairing device comprises a repairing cutter and a cutter feeding assembly for driving the repairing cutter to move along the radial direction of the grinding wheel, the shape of the repairing surface of the repairing cutter is consistent with the shape of the outer surface of the rail head of the steel rail to be ground, and in the moving process of the repairing cutter, the outer circumferential surface of the grinding wheel is repaired to be capable of coating the rail head of the steel rail, so that the rail head of the steel rail is effectively ground, and the service life of the steel rail is prolonged.

On the basis of the technical scheme, the embodiment optimizes the truing device and the grinding device in the rail milling and grinding vehicle and describes the implementation mode in detail.

As shown in fig. 1 and 3, the grinding wheel drive assembly includes: a spindle mount 12, a spindle drive 13 and a spindle 14. Wherein the spindle mount 12 and the spindle driver 13 may be provided on the vehicle body. The main shaft 14 is installed on the main shaft installation seat 12, the main shaft 14 is rotatably connected with the main shaft installation seat 12, a bearing is arranged between the main shaft 14 and the main shaft installation seat 12, one end of the main shaft 14 is connected with the grinding wheel 11, and the other end of the main shaft 14 is connected with the main shaft driving part 13.

The present embodiment provides an implementation of the spindle driver 13: taking the view angles of fig. 1 and 3 as an example, the rotation center line of the grinding wheel 11 is in the horizontal direction. The spindle drive 13 includes: driving wheel, follow driving wheel, belt and driving motor. The axes of the driving wheel and the driven wheel are parallel, the belt is sleeved on the driving wheel and the driven wheel, the driving motor is connected with the driving wheel, and the driven wheel is connected with the right end of the main shaft 14. The driving motor drives the driving wheel to rotate, and the driven wheel is driven to rotate through the belt, so that the main shaft 14 is driven to rotate. The drive motor may also be replaced by a hydraulic motor.

The left end of the spindle 14 is connected to the grinding wheel 11. Specifically, the grinding wheel 11 may be fixed to the spindle 14 by using a grinding wheel fixing seat 15 disposed at the left end of the spindle 14, and for example, the grinding wheel 11 may be fixed by passing through the grinding wheel fixing seat 15, the grinding wheel 11, and the spindle 14 in sequence through bolts.

Further, a wheel guard 3 is provided on the grinding device 1 to cover the outside of the grinding wheel 11 to protect the grinding wheel 11 in rotation. Specifically, the wheel guard 3 is fixed to the spindle attachment 12, and may be fixed to the spindle attachment 12 by a fastening member such as a bolt or a screw, or may be fixed to the spindle attachment 12 by welding.

The embodiment further provides a specific implementation manner of the grinding wheel protective cover 3: the grinding wheel guard 3 includes: the protective device comprises a fixed protective cover and a movable protective cover, wherein the fixed protective cover is arranged on the grinding device, particularly on the main shaft mounting base 12 and can be fixed on the main shaft mounting base 12 in a bolt, screw or welding mode. The movable shield may be disposed on the fixed shield to extend in a vertical direction.

A linear guide structure is arranged between the fixed protective cover and the movable protective cover so as to enable the fixed protective cover and the movable protective cover to move relatively in the vertical direction. For example: the fixed protective cover is provided with a linear slide rail, the movable protective cover is provided with a slide block, and the slide block and the linear slide rail are matched to slide to enable the movable protective cover to move up and down along the vertical direction relative to the fixed protective cover.

The tool feeding assembly can be arranged on other structures of the grinding device, and also can be arranged on the grinding wheel protective cover 3. In this embodiment, the tool feeding assembly is mounted on the grinding wheel guard 3, specifically on the stationary guard, so that the tool feeding assembly drives the dressing tool to move in the center direction of the grinding wheel. The cutter feeding assembly is positioned above the grinding wheel 11, drives the trimming cutter to move downwards to trim the grinding wheel 11, and moves upwards to return to the initial position after trimming. The rotation center line of the grinding wheel is parallel to the plane formed by the top surfaces of the two steel rail rails.

The tool feeding assembly described above can be implemented in a number of ways, for example: the tool feeding assembly comprises: a drive cylinder and a drive rod on which a dressing tool 21 is mounted. The driving cylinder pushes the driving rod to move linearly and drives the trimming cutter 21 to move up and down. The driving cylinder can be a hydraulic driving cylinder or a pneumatic driving cylinder. For the pneumatic drive cylinder, a drive rod is used, one end of which is connected to the pneumatic drive cylinder and the other end of which is connected to the dressing tool 21. For the hydraulic driving cylinder, one end of a driving rod is connected with the hydraulic driving cylinder, and the other end of the driving rod is connected with a trimming cutter.

Alternatively, the tool feeding assembly may also use the principle of a screw and nut combination to drive the movement of the truing tool 21. For example: the nut is fixed, the feed screw is rotated relative to the nut and a feed amount is generated in the axial direction, thereby driving the dressing tool 21 to move.

The present embodiment provides a way of dressing tool movement: the truing apparatus 2 includes: a tool feed assembly, a guide assembly and a tool moving assembly provided with a dressing tool. The cutter feeding assembly drives the cutter moving assembly to move through the guide assembly.

Wherein, the direction subassembly includes: the grinding wheel protection device comprises a first guide structure and a second guide structure, wherein the first guide structure is arranged on the grinding wheel protection cover 3, and the second guide structure is connected with the first guide structure and can slide relative to the first guide structure. The cutter feeding assembly and the cutter moving assembly are respectively connected with the second guide structure, and the cutter feeding assembly is used for driving the second guide structure to slide and driving the cutter moving assembly to move along the radial direction of the grinding wheel.

A specific implementation manner is as follows: the first guide assembly includes: a slide rail 221 and a slide rail fixing member 222. The rail fixing member 222 is fixed to the wheel guard 3, specifically, to the movable guard. The shape of the slide rail fixing member 222 is not limited, and for example, a triangle shape in the drawing of the present embodiment may be adopted. The slide rail 221 is provided on the slide rail fixing member 222 to extend in the radial direction of the grinding wheel 11, specifically, in the vertical direction.

The second guide assembly includes: a slider 223 and a mounting plate 224. The slider 223 is disposed on the slide rail 221 and can slide along the slide rail 221. The slider 223 is disposed on one side surface of the mounting plate 224, the left side surface as viewed in fig. 4 and 5; the tool feeding assembly and the tool moving assembly are disposed on the other side surface of the mounting plate 224, the right side surface as viewed in fig. 4 and 5.

The present embodiment provides an implementation of a tool feeding assembly:

as shown in fig. 4 and 5, the tool feeding assembly includes: the screw rod 231, the hand wheel 232, the handle 233, the screw rod fixing seat 234, the threaded sleeve 235 and the screw rod connecting seat 236. The screw rod 231 is provided with external threads, the top end of the screw rod 231 is connected with the hand wheel 232, the hand wheel 232 is provided with a handle 233, the hand wheel 232 is driven to rotate through the handle 233, and then the screw rod 231 is driven to rotate.

The lead screw retaining bracket 234 is secured to the first guide structure, specifically the rail retaining member 222. The screw rod fixing seat 234 is provided with a through hole, and the threaded sleeve 235 is arranged in the through hole. The threaded sleeve 235 is internally threaded, and the lead screw 231 can pass through the threaded sleeve 235 and be threadedly engaged with the threaded sleeve 235. The threaded sleeve 235 and the slide fastener 222 are stationary, and the lead screw 231 moves downward while rotating.

The screw attachment base 236 is secured to the second guide structure, and in particular to the mounting plate 224, as shown on the right side surface of the mounting plate 224 in fig. 4 and 5. The lead screw connecting seat 236 is provided with a lead screw connecting hole, and the bottom end of the lead screw 231 is connected with the nut 237 after passing through the lead screw connecting hole. The lead screw 231 and the nut 237 are fixed together in a threaded fit and rotate synchronously. The lead screw 231 and the lead screw connecting seat 236 rotate relatively, and the lead screw 231 and the nut 237 are matched to drive the lead screw connecting seat 236 to move synchronously in the process of moving up and down of the lead screw 231.

For the tool moving assembly, the embodiment also provides a specific implementation manner:

fig. 6 is a front view of a tool moving assembly in the rail grinding system according to the embodiment of the present application, and fig. 7 is a left side view of the tool moving assembly in the rail grinding system according to the embodiment of the present application. As shown in fig. 4 to 7, the tool moving assembly includes: guide post mount 241, guide mount 242, tool mount 243, and guide post 244.

Wherein the guide post mounting base 241 is connected to the second guiding structure, specifically fixed to the right side surface of the mounting plate 224. The guide seat 242 is provided on the wheel guard 3, in particular fixed on the mobile guard. The guide base 242 is provided with a guide hole for the guide post 244 to pass through, and the center line of the guide hole extends in the vertical direction. The guide post 244 is disposed in the guide hole and can move relative to the guide seat 242. The top end of the guide post 244 is fixedly connected to the guide post mounting base 241, the bottom end is fixedly connected to the inner end of the cutter mounting base 243, and the outer end of the cutter mounting base 243 is provided with the dressing cutter 21.

The guiding holes are round holes, the number of the guiding holes is two, and the central lines of the two guiding holes are parallel and extend along the vertical direction. The guide posts 244 are cylindrical, and the number of the guide posts is two, and each guide post is inserted into one guide hole. One end of the two guide posts 244 remote from the truing tool 21 is connected to the guide post mount 241, and the other end of the two guide posts 244 is connected to the tool mount 243.

The trimming cutter 21 consists of n independent cutters, wherein n is a natural number and is more than or equal to 1 and less than or equal to 10. The cross section appearance after N cutters combination is unanimous with rail railhead cross section profile. The dressing tool 21 may be fixed to the tool mounting base 243 by a fastener such as a screw, a bolt, or the like, or may be welded to the tool mounting base 243. The tool may be made of diamond, cubic boron nitride or other superhard tool materials.

The working process of the grinding device 1 and the dressing device 2 is as follows:

first, the spindle driver 13 is activated to rotate the grinding wheel 11 via the spindle 14. Then, the hand wheel 232 is rotated by the handle 233 to drive the screw rod 231 to rotate, and the screw rod 231 moves downward while rotating, so as to apply a downward thrust to the screw rod connecting seat 236, and further push the sliding block 223 to slide downward relative to the sliding rail 221. The mounting plate 224 moves synchronously with the slider 221 to drive the guide post mounting base 241 to move the guide post 244, the cutter mounting base 243 and the dressing cutter 21 downwards, and in the process of moving downwards, the dressing cutter 21 contacts with the outer circumferential surface of the grinding wheel 11 and dresses the grinding wheel 11.

After finishing the trimming, the handwheel 232 is rotated reversely to drive the lead screw 231 to rotate reversely and move upwards, so as to apply an upward pulling force to the lead screw connecting seat 236, and further pull the sliding block 223 to slide upwards relative to the sliding rail 221. The mounting plate 224 moves synchronously with the slide block 221, and drives the guide post mounting seat 241 to move the guide post 244, the cutter mounting seat 243 and the dressing cutter 21 upwards, so that the dressing cutter 21 is separated from the grinding wheel 11.

Further, a stroke guard mechanism may be employed to detect and stop the movement of the truing tool 21. The stroke protection mechanism may include: the limiting block, the travel switch, the position sensor and the like can be arranged on the grinding wheel protective cover 3, can also be arranged on the slide rail fixing piece 222 or can be arranged on other structures. The position sensor is used for detecting the moving in-place condition of the trimming cutter 21, the limiting block is used for limiting the moving of the trimming cutter 21, and the travel switch is used for triggering other operations after the trimming cutter 21 moves in place, such as triggering a hydraulic cylinder and stopping the operation of driving the trimming cutter to move forwards by the air cylinder. The travel switch and the displacement sensor are connected corresponding to the controller. During the process of truing the grinding wheel 11 by the truing tool 21, when the stroke protection mechanism detects that the truing of the grinding wheel profile is finished, the truing tool 21 can be moved away from the grinding wheel 11 to return to the initial position.

In another embodiment, the above-described finishing device 2 can also be arranged on a mobile protective cover.

The direction of movement of the finishing device 2 may also not be limited to the vertical direction, but may also be in the horizontal direction or at an angle to the horizontal direction.

The grinding wheel protective cover 3 is provided with a connecting hole and can also be provided with a joint for connecting with a cooling liquid pipe. When the temperature of the dressing tool 21 is too high to be cooled, a cooling liquid pipe is passed through the connection hole or connected to the joint to spray cold liquid to the tool for cooling.

On the basis of the technical scheme, the grinding device is also provided with a base, a movable slide carriage, a vertical guide device and a horizontal guide device. Wherein the base is provided on the vehicle body. The moving slide carriage is connected with the base through a horizontal guide device and can move relatively along the horizontal direction relative to the base. A main shaft mounting seat in the grinding device is connected with the movable slide carriage through a vertical guide device, so that the main shaft mounting seat can move in the vertical direction relative to the movable slide carriage. The main shaft mounting seat and the movable slide carriage can be driven by corresponding driving devices, and the driving devices can be driving motors, transmission mechanisms, hydraulic cylinders or air cylinders.

By adopting the scheme, the main shaft mounting seat and the movable slide carriage can move along the horizontal direction relative to the vehicle main body, the main shaft mounting seat can move along the vertical direction relative to the movable slide carriage, and the steel rail milling and grinding vehicle moves the movable slide carriage and the main shaft mounting seat respectively along the horizontal direction and the vertical direction through driving before grinding a steel rail, so that the grinding device is moved above a rail head of the steel rail.

The embodiment provides an implementation manner: the vertical guide device includes: the grinding device comprises a vertical sliding rail moving along the vertical direction and a vertical sliding block which is matched with the vertical sliding rail to slide relatively, wherein the vertical sliding rail is fixed on one side surface of the moving slide carriage, and the vertical sliding block is fixed on the grinding device 1.

The horizontal guide device includes: the horizontal sliding rail is fixed on the base, and the horizontal sliding block is fixed on the other side surface of the movable slide carriage.

Fig. 8 is a schematic structural diagram of a rail grinding system provided by the embodiment of the application and used for grinding rails on two sides. As shown in fig. 8, further, the grinding devices 1 and the truing devices 2 are each two in number, and one truing device 2 is used for truing one grinding device 1. The two grinding devices 1 are symmetrically arranged on the base along the transverse direction and are used for grinding the two steel rails 4, and the two grinding devices 1 are independent systems and independently finish grinding one steel rail 4. The two grinding devices 1 can grind the rails 4 on two sides simultaneously. The plane of the grinding wheel 11 forms a certain included angle with the steel rail 4 so as to better grind the outline of the steel rail 4.

The embodiment also provides a rail milling and grinding vehicle, which comprises more rail grinding systems provided in any one of the above contents, and has the same technical effects as the rail grinding systems.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.