Railway steel rail polishing device

Abstract

The invention relates to a railway steel rail polishing device. Polishing after traditional steel rail welding mainly depends on manual handheld grinding machine operation, time and labor are wasted, the operation environment is severe, and occupational diseases of workers are easily caused. The device comprises two fixed arms which symmetrically wrap the two sides of a steel rail, the tops of the two fixed arms are hinged to each other, and containing grooves are formed in the sides, making contact with the steel rail, of the fixed arms; the limiting device is connected to the hinged position of the top of the fixing arm in a sleeving mode, and a power assembly is arranged on the limiting device and engaged with the grinding belt; the grinding belt is annular, surrounds the peripheries of the fixed arm and the limiter, and is arranged in a containing groove in the inner side of the fixed arm in a penetrating mode to be tightly attached to the steel rail; and the multiple abutting assemblies are arranged in the containing grooves of the fixed arms correspondingly and abut against the side, away from the steel rail, of the grinding belt. According to the automatic polishing device, manpower consumption is reduced, automatic polishing is achieved, dust falling can be conducted, and therefore sanitation of the polishing environment is guaranteed, and harm to workers is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail maintenance, in particular to a railway rail polishing device. BACKGROUND

[0002] In the field of railway engineering, rail welding is the core process of component seamless line, but the weld area formed after welding often has problems such as welding bump, misalignment and thick edge (i.e. surface roughness) due to material difference, thermal stress concentration and other reasons, which directly affects the smoothness and safety of train operation.

[0003] Traditional rail polishing after welding mainly relies on manual operation of a handheld grinder, but manual polishing requires repeated adjustment of tool angle and pressure, and single weld treatment takes more than 10 minutes, which is time-consuming and labor-intensive, and the operating environment is poor (high temperature, dust, noise), which is easy to cause occupational diseases of workers.

[0004] Therefore, there is an urgent need for a railway rail polishing device that saves time and labor and avoids harm to workers. SUMMARY

[0005] The purpose of the present application is to provide a railway rail polishing device to at least solve the problem of time-consuming and labor-intensive manual polishing of current railway rails and the harm to workers.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0007] The railway rail polishing device comprises

[0008] Two fixed arms are symmetrically covered on both sides of the rail, the top of the two fixed arms is hinged to each other, and a containing groove is formed on the side of the fixed arm in contact with the rail;

[0009] A limiter is sleeved at the top of the fixed arm hinge, a power assembly is arranged on the limiter, and the power assembly is engaged with the polishing belt;

[0010] The polishing belt is annular, the polishing belt is wrapped around the outer periphery of the fixed arm and the limiter, and is tightly fitted in the containing groove on the inner side of the fixed arm and the rail;

[0011] The abutting assembly is provided with a plurality of abutting assemblies, which are arranged in the containing groove of the fixed arm and abut on the side of the polishing belt away from the rail.

[0012] Further, the top end and the bottom end of the containing groove are provided with an opening, and the inner side wall of the containing groove at the abutting assembly is provided with a slide respectively, and a plurality of nozzles are arranged on the inner side wall of the containing groove.

[0013] Further, a limiting groove is arranged at the bottom of the limiting device, and a letting groove is arranged at the top of the limiting device.

[0014] Further, the power assembly comprises a power motor and a driving gear, the power motor is arranged inside the limiting device, the driving gear is coaxially arranged on the output shaft of the power motor, and the driving gear is located in the letting groove.

[0015] Further, the polishing belt comprises a flexible supporting layer and a sanding belt, the flexible supporting layer is provided with an annular tooth groove which is engaged with the driving gear, and the sanding belt is arranged outside the flexible supporting layer.

[0016] Further, the abutting assembly comprises a middle shaft, a plurality of limiting sheets, a plurality of limiting shafts, a plurality of first springs and a fixing shaft, the limiting sheets are respectively arranged at both ends of the middle shaft, the middle shaft and the limiting sheets are sleeved on the fixing shaft, the fixing shaft is arranged in the limiting shaft at both ends, the limiting shaft is arranged on the side of the limiting sheet away from the middle shaft, and one end of the first spring is connected with the limiting shaft and the other end is connected with the inner wall of the slide.

[0017] Further, the middle shaft is sleeved with a pressurizing assembly, the pressurizing assembly comprises a plurality of ring sheets, a plurality of elastic sheets and two sleeve pipes, the ring sheets are spaced apart and sleeved on the middle shaft, the elastic sheets are uniformly distributed along the outer periphery of the middle shaft, the elastic sheets are connected between the ring sheets, the middle part of the elastic sheet is bent away from the middle shaft, and the sleeve pipe is abutted between the ring sheet and the limiting sheet.

[0018] Further, a plurality of limiting humidifying assemblies are arranged at both sides of the polishing belt in the accommodating groove, the limiting humidifying assembly comprises a straight pipe, a limiting sleeve and a plurality of water control beads, the straight pipe is arranged on the inner wall of the accommodating groove, one end away from the inner wall is provided with a sealing, the water control bead is embedded in the side wall of the straight pipe, the water control bead is in communication with the inside of the straight pipe, the limiting sleeve is sleeved on the outer periphery of the straight pipe, the limiting sleeve is abutted with the water control bead, and the limiting sleeve is rotationally connected with the straight pipe through the water control bead.

[0019] Further, the limiting humidifying assembly is connected with a water supply assembly, the water supply assembly comprises a water tank, a water pump and a water inlet pipe, the water inlet of the water pump is in communication with the inside of the water tank, one end of the water inlet pipe is in communication with the water outlet of the water pump, and the other end is arranged outside the fixing arm.

[0020] Further, an outer side of one of the fixed arms is provided with a pressing assembly, the pressing assembly comprises a pressing rod, a pressing roller and a torsion spring, one end of the pressing rod is arranged in the outer wall of the fixed arm and is rotationally connected with the fixed arm, the other end of the pressing rod is located at the side of the polishing belt away from the fixed arm, the pressing roller is sleeved on the pressing rod, the torsion spring is sleeved on the pressing rod, and one end of the torsion spring is connected with the pressing rod and the other end of the torsion spring is connected with the fixed arm.

[0021] Compared with the prior art, the beneficial effects of the present application are as follows:

[0022] The present application provides a railway rail polishing device, by the mutual articulation of two fixed arms, the inner side of the fixed arm is attached to the welding area of the rail, under the limiting action of the abutting assembly on the polishing belt, the polishing belt only abuts the surface of the rail, the power assembly drives the polishing belt, thereby realizing the annular high-speed displacement of the polishing belt and polishing the welding area of the rail, the pressurizing assembly improves the regional polishing pressure of the polishing belt, which facilitates the polishing belt to better adapt to the polishing force of different areas, the limiting and humidifying assembly and the water supply assembly can reduce dust during the polishing process, and can also cooperate with the polishing belt to increase the fineness of polishing the surface of the rail, the pressing assembly can tighten the polishing belt and improve the stability of annular polishing of the polishing belt, thereby ensuring the driving efficiency of the power assembly on the polishing belt, the present application not only saves labor consumption, but also realizes automatic polishing, without the need for manual polishing, saving time and effort, and making the polishing more uniform, the dust is limited by the covering of the fixed arm and the dust reduction of the limiting and humidifying assembly, thereby ensuring the hygiene of the polishing environment and avoiding harm to the workers' bodies. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings of embodiments according to these drawings without creative labor.

[0024] Figure 1 is a structural schematic diagram of the present application;

[0025] Figure 2 is a structural schematic diagram of the limiting device;

[0026] Figure 3 is a structural schematic diagram of the internal structure of the fixed arm;

[0027] Figure 4 is a front view of the present application;

[0028] Figure 5 is a structural diagram of the abutting assembly;

[0029] Figure 6 is a structural diagram of the pressing assembly on the abutting assembly;

[0030] Figure 7 is an exploded structural diagram of the power assembly;

[0031] Figure 8 is an exploded structural diagram of the polishing belt;

[0032] Figure 9 is an exploded structural diagram of the limiting humidifying assembly;

[0033] Figure 10 is a structural diagram of the water supply assembly;

[0034] Figure 11 is a structural diagram of the water control bead;

[0035] Figure 12 is a structural diagram of the downward pressing assembly;

[0036] In the figure, the following are identified:

[0037] 1-steel rail,

[0038] 2-fixed arm, 21-receiving groove, 22-guiding roller, 23-slide, 24-nozzle,

[0039] 3-limiter, 31-limiting groove, 32-power assembly, 321-power motor, 322-driving gear, 323-annular tooth groove,

[0040] 4-polishing belt, 41-flexible support layer, 42-sandpaper belt,

[0041] 5-abutting assembly, 51-middle shaft, 52-limiting sheet, 53-limiting shaft, 54-first spring,

[0042] 6-pressing assembly, 61-ring sheet, 62-elastic sheet, 63-sleeve,

[0043] 7-limiting humidifying assembly, 71-straight pipe, 72-limiting sleeve, 73-water control bead, 731-groove,

[0044] 8-water supply assembly, 81-water tank, 82-water pump, 83-water inlet pipe,

[0045] 9-downward pressing assembly, 91-downward pressing rod, 92-downward pressing roller, 93-torsional spring. DETAILED DESCRIPTION

[0046] For the purpose of promoting the understanding of the present application, the present application will be described in further detail below with reference to the drawings. In the drawings, preferred embodiments of the present application are shown. However, the present application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0047] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] Embodiment:

[0050] As Figure 1 shown, the embodiment provides a railway rail polishing device, which comprises two fixed arms 2, a position limiter 3, a power assembly 32, a polishing belt 4, eight abutting assemblies 5, a pressurizing assembly 6, four position-limiting humidifying assemblies 7, a water supply assembly 8 and a pressing assembly 9. The railway rail polishing device not only can save labor consumption, but also can realize automatic polishing, so that the polishing is more uniform.

[0051] Specifically, the shape of the fixed arm 2 is consistent with the shape of one side of the steel rail 1, and the two fixed arms 2 are symmetrically wrapped on both sides of the steel rail 1. The inner side of each fixed arm 2 is fitted with the outer contour of the steel rail 1, so that the inner side of the fixed arm 2 is attached to the welding area of the steel rail 1. The top of the two fixed arms 2 is hinged to each other. By covering the fixed arm 2, the dust in the polishing process is limited, thereby ensuring the hygiene of the polishing environment.

[0052] Among them, as Figure 3As shown, the side of the fixed arm 2 in contact with the rail 1 is provided with a receiving groove 21 accommodating the polishing belt 4, the top end and the bottom end of the receiving groove 21 are provided with openings to meet the penetration and displacement of the polishing belt 4, and the two opposite inner side walls of the receiving groove 21 at the abutting assembly 5 are respectively provided with a sliding channel 23 accommodating the sliding of the abutting assembly 5, and the inner side wall of the receiving groove 21 is respectively provided with a plurality of spray ports 24, and the outer wall of the fixed arm 2 is provided with a plurality of water inlet holes.

[0053] As shown in Figure 4 , the position where the outer side of the fixed arm 2 is in contact with the polishing belt 4 and the polishing belt 4 turns is fixed with a guide roller 22 rotationally connected with the fixed arm 2, and the polishing belt 4 is located on the side away from the fixed arm 2 to avoid direct contact between the polishing belt 4 and the fixed arm 2.

[0054] Specifically, as shown in Figure 2 , the stopper 3 is a block structure, which is sleeved at the top hinged portion of the fixed arm 2 to limit the opening and closing of the two fixed arms 2.

[0055] Among them, the bottom of the stopper 3 is provided with a limiting groove 31, the limiting groove 31 is sleeved on the hinged shaft of the two fixed arms 2, the size of the limiting groove 31 is matched with the size of the hinged shaft of the two fixed arms 2, so that the stopper 3 limits the hinged opening and closing of the two fixed arms 2, thereby playing a role of fixing the two fixed arms 2, and the top of the stopper 3 is provided with a let-in groove along the width direction of the rail 1.

[0056] Specifically, the power assembly 32 is arranged on the stopper 3, and the power assembly 32 is engaged with the polishing belt 4 for driving the polishing belt 4 to displace in a ring shape.

[0057] As shown in Figure 7 , the power assembly 32 includes a power motor 321 and a driving gear 322, the power motor 321 is arranged inside the stopper 3, the driving gear 322 is coaxially arranged on the output shaft of the power motor 321, and the driving gear 322 is located in the let-in groove, the upper part of the driving gear 322 is exposed outside the let-in groove, and the power assembly 32 is located at the top of the device, so as to increase the contact range of the power assembly 32 and the polishing belt 4, guarantee the engagement area of the driving gear 322 and the polishing belt 4, and further improve the stability of the ring-shaped displacement of the polishing belt 4.

[0058] Specifically, the polishing belt 4 is in a ring shape, the polishing belt 4 is wrapped around the outer periphery of the fixed arm 2 and the stopper 3, and is penetrated into the receiving groove 21 in the inner side of the fixed arm 2 and closely attached to the rail 1, and the outer polishing belt 4 is in a triangular shape, as shown in Figure 8 , the polishing belt 4 includes a flexible support layer 41 and a sanding belt 42.

[0059] The flexible support layer 41 guarantees the support strength of the grinding belt 4 as a whole. In the embodiment, the flexible support layer 41 is a rubber material annular belt, and a metal wire mesh is arranged inside the flexible support layer 41 as a support keel to guarantee the overall strength of the flexible support layer 41. A plurality of tooth grooves are arranged on the flexible support layer 41 in a spaced manner, and the tooth grooves are uniformly distributed to form an annular tooth groove 323, and the annular tooth groove 323 is meshed with the driving gear 322.

[0060] The abrasive belt 42 is fixedly connected to the outer side of the flexible support layer 41, and the abrasive belt 42 provides a grinding work area, and further improves the service life of the grinding belt 4 as a whole. In the embodiment, the abrasive belt 42 is a zirconia alumina abrasive belt, so as to guarantee the grinding efficiency of the welding area of the steel rail 1.

[0061] Under the output of the power motor 321, the driving gear 322 is driven to rotate and is continuously meshed with the annular tooth groove 323, so as to drive the grinding belt 4 to move at a high speed in a ring shape.

[0062] Specifically, the abutting assembly 5 is arranged at the waist part and the arc-shaped turning area of the bottom part in the accommodating groove 21 of the fixed arm 2 respectively. Each fixed arm 2 is provided with four abutting assemblies 5, and the abutting assembly 5 is located on the side of the grinding belt 4 away from the steel rail 1. Under the limiting action of the abutting assembly 5 on the grinding belt 4, the grinding belt 4 is abutted to the surface of the steel rail 1, so that the grinding belt 4 stably grinds the welding area of the steel rail 1 in the process of displacement, as shown in the figure. Figure 5 As shown in the figure, the abutting assembly 5 comprises a middle shaft 51, two limiting sheets 52, two limiting shafts 53, two first springs 54 and a fixed shaft.

[0063] The middle shaft 51 is in a cylindrical shape, and the middle shaft 51 plays a role of abutting and limiting the grinding belt 4, so as to guarantee the abutting grinding of the grinding belt 4 and the profile of the steel rail 1.

[0064] The limiting sheet 52 is in a cylindrical shape, and is integrally arranged at both ends of the middle shaft 51 respectively. A through hole is integrally and internally penetrated in the middle shaft 51 and the limiting sheet 52, and the diameter of the limiting sheet 52 is greater than the diameter of the middle shaft 51. In the process of rotation of the middle shaft 51 and the limiting sheet 52 with the grinding belt 4, the limiting sheets 52 on both sides limit the displacement of the grinding belt 4 along the length direction of the middle shaft 51, so as to guarantee the stability of the ring-shaped displacement of the grinding belt 4.

[0065] The limiting shaft 53 is in the shape of a hollow cylinder, and is open at one end close to the limiting sheet 52. The diameter of the limiting shaft 53 is smaller than the diameter of the central shaft 51, and is also smaller than the width of the sliding channel 23. The limiting shaft 53 is arranged at the side of the limiting sheet 52 away from the central shaft 51, and is located in the sliding channel 23 of the accommodating groove 21. The two ends of the fixing shaft are welded to the inside of the limiting shaft 53. The central shaft 51 and the limiting sheet 52 are sleeved on the fixing shaft, and are coaxially arranged with the limiting shaft 53. The limiting sheet 52 is in close contact with the limiting shaft 53, so that the central shaft 51 and the limiting sheet 52 can rotate around the fixing shaft with the polishing belt 4.

[0066] One end of the first spring 54 is fixedly attached to the annular side wall of the limiting shaft 53, and the other end is fixedly attached to the inner side wall of the sliding channel 23 away from the edge of the fixing arm 2. The elastic force of the first spring 54 provides a pressing force for the limiting shaft 53. The first spring 54 always drives the limiting shaft 53 to slide towards the rail 1, so that the central shaft 51 in the middle drives the polishing belt 4 to always abut against the surface of the rail 1, thereby ensuring the stable abutment of the polishing belt 4 against the rail 1 and the polishing efficiency of the polishing belt 4 on the rail 1.

[0067] Due to the different flatness of each welded area of the rail 1, in order to make the polishing process of the polishing belt 4 more targeted, a pressing assembly 6 is sleeved on the central shaft 51, as shown in Figure 6 The pressing assembly 6 includes two ring sheets 61, a plurality of elastic sheets 62, and two sleeve pipes 63. The ring sheets 61 are spaced apart and sleeved on the central shaft 51. The elastic sheets 62 are evenly distributed along the outer periphery of the central shaft 51, and the two ends of each elastic sheet 62 are fixedly attached to the ring sheets 61. The middle part of each elastic sheet 62 is bent away from the central shaft 51. During the polishing process, the elastic sheets 62 are elastically deformed under the extrusion of the polishing belt 4. Due to the memory property of the elastic sheets 62, the elastic sheets 62 will return to their original shape, thereby exerting an extrusion force on the abutting polishing belt 4 through the elastic sheets 62, further increasing the abutting pressure of the polishing belt 4 on the key area, and increasing the polishing force. The greater the elastic deformation of the elastic sheets 62, the greater the extrusion force, and the better the polishing effect. The ring sheets 61 and the limiting sheet 52 are respectively abutted by the sleeve pipes 63, which are sleeved on the central shaft 51, thereby limiting the sliding of the ring sheets 61 and the elastic sheets 62 along the length direction of the central shaft 51. For a specific area, the elastic deformation of the elastic sheets 62 is applied to the polishing belt 4 through the pressing assembly 6, thereby ensuring the abutting pressure of the abutting area, and increasing the regional polishing pressure, so that the polishing belt 4 is more suitable for different areas of the polishing force.

[0068] In this embodiment, since the grinding belt 4 will generate debris during the process of annular operation, in order to reduce dust during the grinding process, two limiting and humidifying assemblies 7 are arranged in the containing groove 21 of each fixed arm 2 and located at the top area of the rail 1, and the limiting and humidifying assemblies 7 are arranged on both sides of the grinding belt 4, as shown in Figure 9 The limiting and humidifying assembly 7 includes a straight pipe 71, a limiting sleeve 72 and a plurality of water control beads 73, the inside of the straight pipe 71 is a hollow structure, the straight pipe 71 is vertically arranged on the inner wall of the containing groove 21, the upper end of the straight pipe 71 is welded and fixed with the bottom wall of the containing groove 21, and the upper end is open, the lower end of the straight pipe 71 away from the bottom wall is sealed, a plurality of mounting holes are horizontally and annularly arranged on the side wall of the straight pipe 71, the water control beads 73 are respectively embedded in the mounting holes of the side wall of the straight pipe 71, the water control beads 73 are rotationally connected with the straight pipe 71, and the water control beads 73 are in communication with the inside of the straight pipe 71, the limiting sleeve 72 is sleeved on the outer periphery of the straight pipe 71, the inner wall of the limiting sleeve 72 abuts against the water control beads 73, the limiting sleeve 72 is rotationally connected with the straight pipe 71 through the water control beads 73, and the outer wall of the limiting sleeve 72 is tightly attached to the edge of the grinding belt 4, thereby limiting the grinding belt 4.

[0069] Since the limiting sleeve 72 is located on both sides of the grinding belt 4, the limiting sleeve 72 rotates during the displacement of the grinding belt 4, the limiting sleeve 72 drives the water control beads 73 to rotate, and the water control beads 73 overflow with the water source from the water supply assembly 8, so that the water source drops on the surface of the rail 1, thereby inhibiting the dust.

[0070] As shown in Figure 11 , a plurality of grooves 731 are arranged on the periphery of the water control bead 73, and the grooves 731 store water during the rotation of the water control bead 73, thereby improving the efficiency of water dripping.

[0071] The inside of the fixed arm 2 is provided with a water channel in communication with the open end of the straight pipe 71, and the limiting and humidifying assembly 7 is connected with a water supply assembly 8 for supplying water to the inside of the straight pipe 71, so as to ensure sufficient supply of water during the grinding process, as shown in Figure 10 The water supply assembly 8 includes a water tank 81, a water pump 82 and a water inlet pipe 83, the water inlet of the water pump 82 is in communication with the inside of the water tank 81, one end of the water inlet pipe 83 is in communication with the water outlet of the water pump 82, and the other end is installed in the water inlet hole of the outer wall of the fixed arm 2 and in communication with the water channel in the fixed arm 2.

[0072] With the opening of the water pump 82, the water source enters the straight pipe 71 through the water inlet pipe 83 and the water path, the polishing belt 4 drives the limiting sleeve 72 to rotate around the straight pipe 71, the limiting sleeve 72 drives the water control bead 73 to rotate, the water control bead 73 drives the water source in the straight pipe 71 to drip, and as the amount of dripping water source increases, it will seep into the gap between the polishing belt 4 and the surface of the steel rail 1, which not only can adsorb dust in the air, but also can increase the polishing degree of the polishing belt 4 on the surface of the steel rail 1.

[0073] In the embodiment, the side walls of the fixed arm 2 accommodating groove 21 are respectively spaced apart to be provided with a plurality of spray ports 24 which are in communication with the internal water path of the fixed arm 2, so that in the process of rotating the polishing belt 4, the water source sprayed by the spray port 24 can reduce dust on the side of the polishing belt 4 and the steel rail 1, increase the spraying range of the water source, further improve the dust reduction efficiency, ensure the hygiene of the polishing environment, avoid harm to the worker's body, and further improve the fineness of the polishing area.

[0074] In the embodiment, in order to improve the running efficiency of the polishing belt 4, the outer side of one fixed arm 2 is provided with a pressing assembly 9 which presses the polishing belt 4 and drives the polishing belt 4 to be taut, as shown in Figure 12 The pressing assembly 9 includes a pressing rod 91, a pressing roller 92 and a torsional spring 93.

[0075] Specifically, the pressing rod 91 includes a fixed section, an extension section in the middle and a pressing section, the extension section is connected between the fixed section and the pressing section, the fixed section is bent and arranged at one end of the extension section, the end of the fixed section away from the extension section is inserted into the outer wall of the fixed arm 2 and is rotationally connected with the fixed arm 2, and the pressing section is bent and arranged at the end of the extension section away from the fixed section, and the pressing section is located on the side of the polishing belt 4 away from the fixed arm 2.

[0076] The pressing roller 92 is sleeved on the pressing section of the pressing rod 91 and can rotate around the pressing section, and the pressing roller 92 abuts against the surface of the polishing belt 4.

[0077] The torsional spring 93 is sleeved on the fixed section of the pressing rod 91, one end of the torsional spring 93 is connected with the fixed section, the other end is connected with the fixed arm 2, under the elastic force of the torsional spring 93, the pressing roller 92 is pressed in the direction of the polishing belt 4, thereby driving the polishing belt 4 to be taut, improving the stability of the annular polishing of the polishing belt 4, and further ensuring the driving efficiency of the power assembly 32 on the polishing belt 4.

[0078] The above application of specific examples to the present application is only used to help understand the present application and does not limit the present application. For the skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A rail grinding apparatus, characterised in that: The polishing device comprises Two fixed arms (2) are symmetrically arranged on both sides of the steel rail (1), and the top of the two fixed arms (2) are hingedly connected to each other, and a containing groove (21) is formed on the side of the fixed arm (2) in contact with the steel rail (1); A position limiter (3) is sleeved on the top of the hinged connection of the fixed arm (2), and a power assembly (32) is arranged on the position limiter (3), and the power assembly (32) is engaged with the polishing belt (4); The polishing belt (4) is annular, and the polishing belt (4) is arranged around the outer periphery of the fixed arm (2) and the position limiter (3), and is arranged in the containing groove (21) on the inner side of the fixed arm (2) and is in close contact with the steel rail (1); A plurality of abutting assemblies (5) are arranged in the containing groove (21) of the fixed arm (2) and abut on the side of the polishing belt (4) away from the steel rail (1).

2. The railway rail polishing device according to claim 1, wherein: The top end and the bottom end of the containing groove (21) are both provided with an opening, and the inner side wall of the containing groove (21) at the position of the abutting assembly (5) is provided with a slide (23), and a plurality of nozzles (24) are formed on the inner side wall of the containing groove (21).

3. The railway rail polishing device according to claim 1, wherein: The bottom of the position limiter (3) is provided with a limiting groove (31), and the top of the position limiter (3) is provided with a let-in groove.

4. The railway rail polishing device according to claim 3, wherein: The power assembly (32) comprises a power motor (321) and a driving gear (322), the power motor (321) is arranged in the position limiter (3), the driving gear (322) is coaxially arranged on the output shaft of the power motor (321), and the driving gear (322) is located in the let-in groove.

5. The railway rail polishing device according to claim 4, wherein: The polishing belt (4) comprises a flexible support layer (41) and a sanding belt (42), the flexible support layer (41) is provided with an annular tooth groove (323) which is engaged with the driving gear (322), and the sanding belt (42) is arranged on the outer side of the flexible support layer (41).

6. The railway rail polishing device according to claim 2, wherein: The abutting assembly (5) comprises a middle shaft (51), a plurality of limiting pieces (52), a plurality of limiting shafts (53), a plurality of first springs (54) and a fixed shaft, the limiting pieces (52) are arranged at both ends of the middle shaft (51), the middle shaft (51) and the limiting pieces (52) are sleeved on the fixed shaft, the fixed shaft is arranged in the limiting shaft (53) at both ends, the limiting shaft (53) is arranged on the side of the limiting piece (52) away from the middle shaft (51), and the first spring (54) is connected to the limiting shaft (53) at one end and connected to the inner wall of the slide (23) at the other end.

7. The rail grinding device of claim 6, wherein: a pressing assembly (6) is sleeved on the middle shaft (51), the pressing assembly (6) comprises a plurality of ring pieces (61), a plurality of elastic pieces (62) and two sleeve pipes (63), the ring pieces (61) are sleeved on the middle shaft (51) at intervals, the elastic pieces (62) are uniformly distributed along the outer periphery of the middle shaft (51), the elastic pieces (62) are connected between the ring pieces (61), the middle portions of the elastic pieces (62) are respectively bent away from the middle shaft (51), and the sleeve pipes (63) are respectively abutted between the ring pieces (61) and the limiting pieces (52).

8. The rail grinding device of claim 1, wherein: a plurality of limiting humidifying assemblies (7) are respectively arranged on both sides of the grinding belt (4) in the accommodating groove (21), the limiting humidifying assembly (7) comprises a straight pipe (71), a limiting sleeve (72) and a plurality of water control beads (73), the straight pipe (71) is arranged on the inner wall of the accommodating groove (21), one end away from the inner wall is closed, the water control beads (73) are embedded in the side wall of the straight pipe (71), the water control beads (73) are in communication with the inside of the straight pipe (71), the limiting sleeve (72) is sleeved on the outer periphery of the straight pipe (71), the limiting sleeve (72) is abutted with the water control beads (73), and the limiting sleeve (72) is rotationally connected with the straight pipe (71) through the water control beads (73).

9. The rail grinding device of claim 8, wherein: the limiting humidifying assembly (7) is connected with a water supply assembly (8), the water supply assembly (8) comprises a water tank (81), a water pump (82) and a water inlet pipe (83), the water inlet of the water pump (82) is in communication with the inside of the water tank (81), one end of the water inlet pipe (83) is in communication with the water outlet of the water pump (82), and the other end is arranged on the outside of the fixed arm (2).

10. The rail grinding device of claim 1, wherein: a pressing assembly (9) is arranged on the outside of one of the fixed arms (2), the pressing assembly (9) comprises a pressing rod (91), a pressing roller (92) and a torsional spring (93), one end of the pressing rod (91) is arranged through the outer wall of the fixed arm (2) and is rotationally connected with the fixed arm (2), the other end is located on the side of the grinding belt (4) away from the fixed arm (2), the pressing roller (92) is sleeved on the pressing rod (91), the torsional spring (93) is sleeved on the pressing rod (91), one end of the torsional spring (93) is connected with the pressing rod (91), and the other end is connected with the fixed arm (2).

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