CN212270553U - Steel rail profiling grinding machine - Google Patents

Abstract

The invention provides a rail profiling sander, comprising: a frame for connecting or arranging or providing support for the various devices of the rail profiling sander; a power supply for supplying power to the device in the rail profile grinding machine; the abrasive belt grinding device is used for grinding the steel rail, is connected to the machine frame and comprises a driving wheel, a contact wheel and an abrasive belt; the deflection device is used for driving the steel rail profiling grinding machine to deflect around the steel rail and comprises two limiting wheels which are coaxially arranged and have different diameters; and a power supply device for supplying power to the driving wheel of the belt sanding device. According to the invention, the abrasive belt is used as a grinding tool, and the abrasive belt and the steel rail are in flexible contact when grinding operation is carried out due to the characteristics of the contact wheel rubber layer and the abrasive belt, so that the influence of the vibration of the grinding machine on the surface layer of the steel rail is reduced, and the grinding quality is improved; meanwhile, two-section deflection is arranged, so that the whole steel rail profile range can be polished; the direct current motor and the battery are used for driving, the weight is light, the noise is low, and the environment is protected.

Description

Steel rail profiling grinding machine

Technical Field

The utility model relates to a railway maintenance machinery technical field especially relates to rail profile modeling polisher.

Background

According to the detection requirements of the steel rail of the line, the requirements on the size and the surface flatness of the welded joint of the steel rail are generally high, so that the welding seam (or the welding part) needs to be polished. In the prior art, a steel rail grinding wheel welding line grinding machine is adopted to grind a welding line. However, the prior rail grinding wheel weld joint grinding machine has the following defects: (1) an internal combustion engine is used as a drive, so that the vibration is large in the polishing process, and the polishing quality of the surface of the steel rail is influenced; meanwhile, the noise is large, the dust is large, the tail gas emission is serious, the environmental pollution is caused, and the body health of workers is seriously influenced, and (2) the grinding is carried out by adopting a grinding wheel, the grinding content is monotonous, the sparks are sprayed in the circumferential direction, and the safety is poor.

In addition, due to the existence of the welding line, the existing grinding machine is easy to cause the guide wheel to jump (due to the unsmooth welding line) when the existing grinding machine walks through the welding line and nearby, so that the grinding surface is unsmooth, the damage of the grinding wheel is easier to cause, and the safety of operators is further influenced.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a rail profile modeling polisher to the realization utilizes the abrasive band to carry out effectual polishing to the rail welding seam, avoids the welding seam to the influence of the quality of polishing.

In order to achieve the above object, the present invention provides a rail copying grinder, comprising a frame for connecting or arranging or supporting each device of the rail copying grinder; a power supply for supplying power to the device in the rail profile grinding machine; the abrasive belt grinding device is used for grinding the steel rail, is connected to the machine frame and comprises a driving wheel, a contact wheel and an abrasive belt; the deflection device is used for driving the steel rail profiling grinding machine to deflect around the steel rail and comprises two limiting wheels which are coaxially arranged and have different diameters; and a power supply device for supplying power to the driving wheel of the belt sanding device.

Further, the frame includes a middle plate, and an upper plate provided on an upper portion of the middle plate and side plates provided on both sides of the middle plate.

Furthermore, the frame also comprises a handrail rod which is approximately in an inverted U shape, and two ends of the handrail rod are respectively positioned at the outer sides of the side plates of the frame.

Furthermore, the deflection device also comprises a swing shaft bracket and a swing guide groove, wherein the inner side limit wheel and the outer side limit wheel are arranged on two sides of one end of the swing shaft bracket through limit wheel shafts, the swing shaft bracket is arranged on the rack through a swing shaft, one end of the swing guide groove is arranged on the rack, and the other end of the swing guide groove is connected with the handrail.

The tensioning mechanism comprises a spring, a spring seat, a spring sleeve and a tensioning pull rod, wherein the spring seat is mounted on the machine frame, one side of the spring sleeve is connected to the spring seat through the spring, the other side of the spring sleeve is mounted on the contact wheel, one end of the tensioning pull rod is mounted on the spring sleeve, and the other end of the tensioning pull rod is mounted on an eccentric wheel located on the spring seat.

The device comprises a rack, a contact wheel carrier device and a control device, wherein the contact wheel carrier device comprises a vertical linear guide rail slider, a first slider connecting plate, a second slider connecting plate, a horizontal linear guide rail slider and a contact wheel shaft, the vertical linear guide rail slider is slidably arranged on the first slider connecting plate, the horizontal linear guide rail slider is slidably arranged on the second slider connecting plate, one end of the first slider connecting plate is connected with the rack, and the other end of the first slider connecting plate is connected with the contact wheel shaft through the second slider connecting plate and the horizontal linear guide rail slider.

Further, the contact wheel shaft is connected with the contact wheel.

Further comprises a lifting device which comprises a screw sleeve, a screw nut, a screw head and a hand wheel,

wherein, the upper surface at the frame is installed to the lead screw cover, and screw nut links to each other with the lead screw cover, lead screw and screw nut cooperation, the one end of lead screw head is connected with the lead screw, and the other end links to each other with contact wheel frame.

Further, the rail profile grinding machine can realize a two-stage deflection mode of a deflection device and a handrail descending, wherein the deflection range of the deflection device is 0-30 degrees on one side, and the deflection range of the handrail descending is 30-90 degrees on one side.

Further, the power supply device includes a rechargeable battery.

According to the above-mentioned technical scheme that the embodiment of the utility model provides, the utility model discloses rail profile modeling polisher adopts the abrasive band as grinding tool to the motor adopts chargeable lithium cell to supply power for the motor as the power supply, and the rubber layer of contact wheel and abrasive band self characteristic make abrasive band and rail be the flexonics when the operation of polishing, can reduce the polisher vibration to the influence of the quality of polishing, have improved the operating efficiency of polishing simultaneously, have alleviateed operator intensity of labour. Meanwhile, two-section deflection is arranged, and the longitudinal position of the contact wheel is adjusted through the lifting hand wheel, so that the whole steel rail profile range can be polished.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Figure 1 shows an overall view (front) of a rail profiling sander of an embodiment of the present invention.

Figure 2 shows an overall view (back) of a rail profiling sander of an embodiment of the present invention.

Fig. 3 is a diagram showing a structure of a belt sanding device of a rail copying grinder according to an embodiment of the present invention.

Fig. 4 is a diagram showing the structure of the tension mechanism of the rail copying grinder according to the embodiment of the present invention.

Fig. 5 is a view showing the structure of a deflector of a rail copying grinder according to an embodiment of the present invention.

Figure 6 shows a schematic view of two deflection stages of a rail profiling sander of an embodiment of the present invention.

Fig. 7 is a diagram showing a structure of a lifting device of a rail copying grinder according to an embodiment of the present invention.

Fig. 8 is a view showing the structure of a contact carriage device of a rail grinding machine according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or 5 intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be given by way of example only with reference to the accompanying drawings, and the embodiments are not limited thereto.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

An embodiment of the utility model provides a rail profile modeling polisher, mainly used polish in order to eliminate or alleviate wearing and tearing to the rail, especially effectively polish rail seam welding treatment back weld zone to reduce the welding seam to the influence of rail profile modeling polisher. The size of the rail copying grinder, as a whole, needs to be extended in the direction in which the rail extends (hereinafter simply referred to as "rail direction"). For example, as described in detail below, the frame extends in the direction of the rails and within its extension is located a belt sander apparatus. Further, in order to facilitate miniaturization of the rail copying grinders, the length of the rail copying grinders extending parallel to the rail direction (longitudinal direction) is longer than the length of the rail copying grinders extending perpendicular to the rail direction (lateral or horizontal direction). And a deflection device extending along the direction of the steel rail is connected in front of and/or behind the frame. The utility model discloses a rail profile modeling polisher is arranged along the direction that the rail extends on the whole, can polish to a rail in two parallel rails on the railway.

The utility model provides a rail profile modeling polisher includes: the device comprises a frame, an electric power supply device, a belt sanding device, a deflection device and a power supply device. In a further embodiment, the utility model provides a rail profile modeling polisher still includes elevating gear. Wherein the frame is used for directly or indirectly arranging, carrying, connecting, supporting or mounting the power supply device, the belt sander device, the deflection device, the power supply device and the lifting device.

The above-described devices, mechanisms, elements, components, and the like will be described in detail below.

< frame >

The frame 1 serves to carry and guide the rail grinding machine along the rail. The various devices, mechanisms, elements, components, etc. of the rail profiling sander are arranged, supported, connected, mounted, directly or indirectly, to the frame 1.

The configuration and shape of the frame 1 are not limited, and may be configured, for example, in a rectangular shape, a linear beam shape, or the like, as long as it has sufficient strength and can support other devices.

In the exemplary embodiment, the frame 1 is a plate structure, and includes a middle plate 111, and an upper plate 112 disposed at an upper portion of the middle plate 111 and side plates 113 and 114 disposed at both sides of the middle plate 111. The upper plate 112 may be constructed in a zigzag shape, for example, the upper plate 112 may be composed of 3 segments in which the heights of both sides (low plate) are lower than the height of the middle (high plate). The power supply means, power supply means and lifting means are preferably arranged on the upper plate 112. The belt sander is preferably arranged on the front side of the middle plate 111 and between the side plates 113 and 114, as shown in fig. 1. The contact carriage means connecting the lifting device with the belt sanding device is preferably arranged at the rear side of the middle plate 111 or through the middle plate 111 and also between the side plates 113 and 114. The running wheel carriage 2a and the deflection means are preferably arranged outside the side plates 113 and 114. The traveling wheel frame 2a is suspended from, for example, a lower plate on both sides of the upper plate 112. The number of the traveling wheel frames 2a is not limited, and may be, for example, 2 as shown in the figure, and the traveling wheel frames are respectively located at the front and rear end portions of the frame 1.

In order to facilitate the running of the rail copying grinder on the rail, a moving mechanism, such as a guide wheel 2, is arranged on the frame 1. The guide wheel 2 can be mounted on a walking wheel frame 2a under the frame 1. The number of guide wheels is not limited. The guide wheel 2 can facilitate the whole grinding machine to walk on the steel rail in the grinding process.

In order to operate the steel rail profiling sander conveniently, a handrail 3 is arranged on the rack 1. The grab bar 3 may be connected to the frame 1 by welding or the like. In the case where a subsequent deflector is provided, at least one of the two ends of the handrail 3 can also be connected to the swing pedestal 28 of the deflector by means of, for example, welding or the like. The handrail 3 has a substantially inverted U-shape. When the rail copying grinder is operated, an operator can operate the forward/backward movement of the rail copying grinder by putting his hand on the grab bar 3.

Handles 4 may also be provided at the front and rear ends of the frame 1, as best shown in figure 1, to facilitate handling of the rail profiling sander. The handle 4 may be directly connected to the frame 1 or to the lower panel of the upper panel 112 by welding or the like.

An insulator (not shown) may be provided between the guide wheel 2 and the frame 1 to prevent static electricity or the like caused by friction between the guide wheel and the rail from interfering with other devices or elements of the rail copying grinder or the like.

< Power supply device >

The power supply device is used for supplying power to one or more of various devices, mechanisms, elements and components in the rail profiling sander. For example, the power supply device supplies power to the power supply device 5 that operates the drive wheels 24 (described later) of the belt sander.

The power supply device includes an electrical box 6 and a battery box 7, which are respectively mounted on the rack 1. In the exemplary embodiment, the electrical box 6 and the battery box 7 are mounted on the upper plate 112, respectively. As shown, the electrical box 6 is located on the high board and the battery box 7 is located on the bottom board.

Alternatively, the electrical box 6 and the battery box 7 may also be integrated into one box.

< Power supply device >

The power supply device is supplied with power from the electric power supply device and supplies power to a drive wheel 24 described later.

As an example, the power supply means is a motor 5, which is mounted directly on the frame 1 (upper plate 112) or on a motor bracket fixed on the frame 1.

< sanding apparatus with abrasive belt >

Figure 3 shows a schematic view of a belt sander arrangement of a rail profiling sander. As shown in fig. 3, the belt sander comprises a contact wheel 23, a drive wheel 24 and a sanding belt 27.

The contact wheel 23 is used for contacting the rail and is mounted on the contact wheel shaft 17 of a contact wheel carrier device (described later).

The drive wheel 24 is arranged to receive power from the motor 5 for rotation and thereby rotate the abrasive belt 27. The driving wheel 24 is provided with a driving wheel axle 25 and a driving wheel axle seat 26. The driving wheel 24 is mounted on a driving wheel bearing 26 through a driving wheel shaft 25, and the other end of the driving wheel shaft 25 is connected with the motor 5 through a timing belt to obtain a driving force. The drive wheel bearing blocks 26 are mounted on the machine frame 1.

The abrasive belt 27 is wound around the outer circumference of the driving wheel 24 and the contact wheel 23 to form a circulating closed loop. During operation of the rail profiling sander, the abrasive belt 27 continues to feed into contact with the rail. A rubber layer is provided on the contact wheel 23. The rubber layer and the abrasive belt have the characteristic of enabling the abrasive belt to be in flexible contact with the steel rail. This can reduce the influence of polisher vibration to the quality of polishing, improves the operating efficiency of polishing simultaneously. After the sanding belt 27 is worn, the sanding belt 27 can be replaced.

To adjust the tension of the sanding belt 27, a tensioning mechanism can be provided, which is used to adjust the distance between the drive wheel 24 and the tensioning wheel 23. A schematic of the tensioning mechanism is shown in figure 4. The tensioning mechanism comprises a spring seat 18, a spring sleeve 19, a tensioning pull rod 20 and an eccentric 21. The tensioning mechanism may also include a tensioning wrench 22 for ease of operation by the operator. The spring is mounted between the spring seat 18 and the spring sleeve 19. The spring receptacle 18 is mounted on the machine frame 1 (middle plate) so as to be rotatable about a projecting stub on the spring receptacle 18 but fixed relative to a drive wheel 24, and the other side of the spring sleeve 19 is mounted on a contact wheel 23 (in the case of a contact wheel carrier arrangement described below, the other side of the spring sleeve 19 is mounted on the contact wheel axle 17). In operation, the spring pushes the spring sleeve 19 to create tension to move the contact wheel 23 toward or away from the drive wheel 24.

The tensioning rod 20 is mounted at one end on the spring sleeve 19 and at the other end on the eccentric shaft of the eccentric 21. The tensioning wrench 22 is connected to the eccentric 21 via an eccentric shaft which is inserted into the shaft hole of the limit stub shaft of the spring seat 18. The operator can thus adjust the tensioning force of the contact wheel by operating the tensioning wrench 22.

When the abrasive belt 27 is replaced, the tensioning wrench 22 is pulled to drive the eccentric wheel 21 to pull the tensioning pull rod 20, the spring sleeve 19 extrudes the spring, and the tensioning force is removed.

< deflecting device >

Fig. 5 is a view showing a structure of a deflector of the rail copying grinder. The deflection device is used for driving the steel rail profiling grinding machine to deflect around a steel rail and comprises a swing shaft frame 28, an inner side limiting wheel 29, an outer side limiting wheel 30 and a swing guide groove 31. The deflecting device also includes a positioning handle 32 for facilitating operation by the operator. The inner limiting wheel 29 and the outer limiting wheel 30 are mounted on both sides of one end of the swing shaft frame 28 through limiting wheel shafts, are coaxially arranged, and the distance between the two wheels is about the width of one steel rail. To accommodate rails of different widths, the spacing axle is adjustable in length, thereby allowing the distance between the inboard spacing wheel 29 and the outboard spacing wheel 30 to be adjusted. The diameter of the inboard stop wheel 29 is smaller than the diameter of the outboard stop wheel 30 and this difference in diameters helps to keep the rail profile grinding machine from falling over when deflected by 60 degrees. For example, the diameter of the lateral stop wheel 30 is 2 times the diameter of the medial stop wheel 29.

Two swing shaft brackets 28 are arranged at the front position and the rear position of the frame and are connected by the hand rail 3. The other side of the swing shaft bracket 28 is connected with a swing shaft installed on the machine frame 1, the swing shaft is installed on the machine frame 1, and the machine frame 1 can rotate around the swing shaft bracket 28. One end of the swing guide groove 31 is arranged on a swing ear of the frame 1, and the other end is connected with the handrail 3 through a positioning handle 32. By rotating the positioning handle 32, the position of the swing guide groove 31 can be changed relative to the handrail 3, thereby causing the rail profile grinding machine to rotate along the rail as a whole.

Figure 6 shows a two-stage deflection diagram of a rail profiling sander. As shown, the rail profile sander travels normally perpendicular to the rail (case a). When deflection is required, the positioning handle 32 is rotated to deflect the rail profile grinding machine within 30 degrees (first deflection, case B). In the case where the rail profile grinding machine is at a deflection angle of 30 degrees, the hand lever 3 can be operated to continue the deflection of the rail profile grinding machine to a deflection angle in the range of 30 to 90 degrees (shown in case C). The rail grinding profile does not fall over due to deflection because of the force applied by the operator and the different configuration of the inboard limiting wheel 29 and the outboard limiting wheel 30.

< lifting device >

Figure 7 shows a schematic view of the lifting device of the rail profiling sander. The lifting device comprises a screw sleeve 8, a screw nut 9, a screw 10, a screw head 11 and a hand wheel 12. The lead screw housing 8 is mounted on the upper plate 112 of the frame 1. Lead screw nut 9 passes through the screw and links to each other with lead screw cover 8, and lead screw 10 and the cooperation of lead screw nut 9 drive lead screw 10 through hand wheel 12 and rotate the lift that realizes the device, and 11 one end of lead screw head is connected with lead screw 10 through the pin, and the other end links to each other with abrasive band grinding device. When a contact carriage device described later is provided, the other end of the screw head 11 is connected to the slider connecting plate 14.

< contact carriage device >

Fig. 8 is a view showing a structure of a contact carriage device of the rail grinding machine. As shown, the contact carriage arrangement includes a vertical linear guide slider 13, slider connection plates 14, 15', a horizontal linear guide slider 15 and a contact axle 17. The vertical linear guide slider 13 is slidably mounted on a slider attachment plate 14. The horizontal linear guide slider 15 is slidably mounted on a slider attachment plate 18. One end of the slide block connecting plate 14 is connected with the frame 1, and the other end is connected with the contact wheel shaft 17 through a slide block connecting plate 15' and a horizontal linear guide rail slide block 15, so that the contact wheel shaft 17 can freely move in the direction vertical to the shaft plane. The contact wheel carrier device also comprises a press plug 16. The upper part of the slide block connecting plate 14 is connected with the screw head 11 and is limited by a press plug 16.

To sum up, the utility model discloses rail profile modeling polisher is through walking wheel along the rail walking, and elevating gear control abrasive band is polished a head height, sets up the abrasive band among the abrasive band is polished a head device and is polished the rail profile shape as grinding means.

The steel rail profiling sander of the embodiment of the utility model adopts the abrasive belt as a sanding tool, and the rubber layer of the contact wheel and the self characteristic of the abrasive belt make the abrasive belt and the steel rail flexibly contact during sanding operation, thereby reducing the influence of sander vibration on the surface layer of the steel rail and improving the sanding quality; meanwhile, two-section deflection is arranged, so that the whole steel rail profile range can be polished; the steel rail profiling sander is driven by the direct current motor and the battery, light in weight, low in noise and more environment-friendly, and meanwhile, is simple in structure and convenient to operate and maintain.

Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.

Those of ordinary skill in the art will understand that: the components in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A rail profiling sander, comprising:

a frame for connecting or arranging or providing support for the various devices of the rail profiling sander;

a power supply for supplying power to the device in the rail profile grinding machine;

the abrasive belt grinding device is used for grinding the steel rail, is connected to the machine frame and comprises a driving wheel, a contact wheel and an abrasive belt;

the deflection device is used for driving the steel rail profiling grinding machine to deflect around the steel rail and comprises two limiting wheels which are coaxially arranged and have different diameters; and

and the power supply device is used for supplying power to the driving wheel of the belt sanding device.

2. A rail profiling sander as set forth in claim 1, wherein the frame comprises a central panel, and an upper panel disposed on top of the central panel and side panels disposed on either side of the central panel.

3. The rail profiling sander of claim 1 wherein the frame further comprises a grab bar having an inverted U-shape with each end located outside a side panel of the frame.

4. A rail profiling sander according to claim 3, wherein the deflecting means further comprises a swing pedestal and a swing guide channel,

wherein the inner side limiting wheel and the outer side limiting wheel are arranged on two sides of one end of the swinging shaft bracket through a limiting wheel shaft, the swinging shaft bracket is arranged on the machine frame through a swinging shaft,

wherein, swing guide slot one end is installed in the frame, and the other end links to each other with the handrail.

5. A rail profiling sander as set forth in claim 1, further comprising a tensioning mechanism for adjusting the tension of the contact wheel, comprising a spring, a spring seat, a spring sleeve and a tensioning tension rod,

the spring seat is installed on the machine frame, one side of the spring sleeve is connected to the spring seat through a spring, the other side of the spring sleeve is installed on the contact wheel, one end of the tensioning pull rod is installed on the spring sleeve, and the other end of the tensioning pull rod is installed on an eccentric wheel located on the spring seat.

6. A rail profiling sander as set forth in claim 1, further comprising contact carriage means comprising a vertical linear guide slide, a first slide attachment plate, a second slide attachment plate, a horizontal linear guide slide, and a contact axle,

the vertical linear guide rail sliding block is slidably arranged on a first sliding block connecting plate, the horizontal linear guide rail sliding block is slidably arranged on a second sliding block connecting plate, one end of the first sliding block connecting plate is connected with the rack, and the other end of the first sliding block connecting plate is connected with the contact wheel shaft through the second sliding block connecting plate and the horizontal linear guide rail sliding block.

7. A rail profiling sander as set forth in claim 6, wherein the contact wheel shaft is connected to the contact wheel.

8. The rail profiling sander according to claim 6, further comprising a lifting device comprising a screw housing, a screw nut, a screw head, and a hand wheel,

wherein, the upper surface at the frame is installed to the lead screw cover, and screw nut links to each other with the lead screw cover, lead screw and screw nut cooperation, the one end of lead screw head is connected with the lead screw, and the other end links to each other with contact wheel frame.

9. A rail profiling sander according to claim 3, wherein the rail profiling sander is capable of a two-stage deflection mode in which the deflection means and the grab bar are lowered, wherein the deflection means has a deflection range of 0 ° to 30 ° on a single side and the deflection range of 30 ° to 90 ° on a single side for the grab bar to be lowered.

10. A rail profiling sander as set forth in claim 1, wherein the power supply means comprises a rechargeable battery.

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