Steel rail welding rib grinding machine

Abstract

The invention relates to a steel rail welding rib grinding machine which comprises a moving frame, a first grinding assembly, a first displacement assembly, a second grinding assembly and a second displacement assembly. The movable frame can be erected on a steel rail and can be fixed on the steel rail; the first displacement assembly and the second displacement assembly are installed on the moving frame. The moving end of the first displacement assembly is connected with the first grinding assembly and used for driving the first grinding assembly to move along the X-axis, the Y-axis and the Z-axis. The moving end of the second displacement assembly is connected with the second grinding assembly and used for driving the second grinding assembly to move along the X-axis, the Y-axis and the Z-axis. The first grinding assembly and the second grinding assembly are used for grinding welding ribs on the two opposite sides of the steel rail correspondingly, and the first grinding assembly and the second grinding assembly move in the same direction when grinding around the steel rail. The grinding efficiency and grinding quality are improved, the labor cost is saved, the labor intensity is reduced, the adaptability to the working environment is improved, and the consistency of the contours of the ground welding ribs is higher; and the first polishing assembly and the second polishing assembly can be independently used for polishing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail welding reinforcement polishing, and particularly relates to a rail welding reinforcement polishing machine. BACKGROUND

[0002] In the field of railway construction and maintenance, the welding reinforcement polishing process after rail welding is crucial. High-quality polishing not only improves the appearance of the rail surface, but also effectively reduces defects and stress concentration at the weld, greatly enhances the weld strength, and ensures the safety and stability of train operation. Especially for high-speed rail, the polishing quality directly affects the performance of the train.

[0003] Although manual rail welding reinforcement polishing machines have the advantages of low cost and high flexibility, they are limited by the "manual-dominated" operation mode and have inherent defects in precision control, work efficiency, labor intensity, etc. The precision stability is poor and depends on the operation experience. The profile consistency is insufficient: the surface roughness of the welding reinforcement polished by different operators differs greatly (the Ra value fluctuation range is 6.3-25 mu m), which is difficult to meet the precise polishing demand of high-speed rail lines (requiring Ra≤3.2 mu m). The work efficiency is low, the auxiliary working hours account for a high proportion, and it is not suitable for batch construction. The labor intensity is large, and the occupational health risk is prominent, such as fatigue accumulation of handheld operation, vibration and noise hazards, dust exposure risk, etc. The adaptability to complex working conditions is limited, such as limited high-altitude and narrow-space operation, low-temperature and extreme environment efficiency. The above problems need to be solved. SUMMARY

[0004] The present application discloses a rail welding reinforcement polishing machine, which aims to solve the technical problems existing in the prior art.

[0005] The present application adopts the following technical solutions:

[0006] The present application provides a rail welding reinforcement polishing machine, which comprises a moving frame, a first polishing assembly, a first displacement assembly, a second polishing assembly and a second displacement assembly. The moving frame can be erected on the rail and fixed on the rail. The first displacement assembly and the second displacement assembly are respectively installed on the moving frame. The moving end of the first displacement assembly is connected to the first polishing assembly for driving the first polishing assembly to move along the XYZ axis. The moving end of the second displacement assembly is connected to the second polishing assembly for driving the second polishing assembly to move along the XYZ axis. The first polishing assembly and the second polishing assembly are respectively used for polishing the welding reinforcement on the opposite sides of the rail, and the moving directions of the first polishing assembly and the second polishing assembly are the same when polishing around the rail.

[0007] In the rail weld grinding machine of the present invention, the first grinding assembly includes a first mounting frame, a first driving assembly, a first grinding piece and a first force measuring element; the first mounting frame is fixedly mounted on the movable end of the first displacement assembly; the first driving assembly is mounted on the first mounting frame and is used to drive the first grinding piece; one side of the first grinding piece is hinged to the first mounting frame, and the rotation direction is perpendicular to the extension direction of the rail, and the other side is fixed to the first mounting frame through the first force measuring element; the first force measuring element is used to measure the force between the first grinding piece and the rail when the first grinding piece grinds the rail head, rail waist and rail bottom of the rail.

[0008] In the rail weld grinding machine of the present invention, the first drive assembly is a belt-driven drive assembly; the first grinding piece is a grinding belt, which is wound on the first drive assembly, and the part of the grinding belt that is in contact with the first grinding roller of the first drive assembly is the grinding part, and the part of the grinding part that is in contact with the first grinding roller is greater than or equal to half of the circumference of the first grinding roller.

[0009] In the rail weld grinding machine of the present invention, the first grinding assembly further includes a first cooling fan; the first cooling fan is used to cool the first grinding piece.

[0010] In the rail weld grinding machine of the present invention, the second grinding assembly includes a second mounting frame, a second drive assembly, a second grinding piece and a second force measuring element; the second mounting frame is fixedly mounted on the movable end of the second displacement assembly; the second drive assembly is mounted on the second mounting frame for driving the second grinding piece; one side of the second grinding piece is hinged to the second mounting frame, with the rotation direction perpendicular to the extension direction of the rail, and the other side is fixed to the second mounting frame through the second force measuring element; the second force measuring element is used to measure the force between the second grinding piece and the rail when the second grinding piece grinds the rail head, rail waist and rail bottom of the rail.

[0011] In the rail weld grinding machine of the present invention, the second drive assembly is a belt-driven drive assembly; the second grinding piece is a grinding belt, which is wound on the second drive assembly, and the part of the grinding belt that is in contact with the second grinding roller of the second drive assembly is the grinding part, and the part of the grinding part that is in contact with the second grinding roller is greater than or equal to half of the circumference of the second grinding roller.

[0012] In the rail weld grinding machine of the present invention, the second grinding assembly further includes a second cooling fan; the second cooling fan is used to cool the second grinding piece.

[0013] In the rail welding reinforcement polisher, a housing and a third fan are further included; the housing is arranged on the first polishing assembly, the first displacement assembly, the second polishing assembly and the second displacement assembly, and the bottom is of an open structure for polishing debris; and the third fan is arranged on the housing and sends air into the housing through an air inlet on the housing.

[0014] In the rail welding reinforcement polisher, the moving frame includes a frame, a first walking wheel and a first clamping assembly; the frame has the first polishing assembly, the first displacement assembly, the second polishing assembly and the second displacement assembly mounted on the top, and the first walking wheel and the first clamping assembly mounted on the bottom; the first walking wheel is used to roll on the rail head of the rail for polishing; and the first clamping assembly is used to clamp the side of the rail head of the rail for polishing to fix the position of the frame.

[0015] In the rail welding reinforcement polisher, a temperature measuring element is further included; the temperature measuring element is used to measure the temperature of the first polishing assembly and the second polishing assembly.

[0016] The technical scheme adopted by the present application can achieve the following beneficial effects:

[0017] The present application mainly provides a rail welding reinforcement polisher, which polishes the welding reinforcement on both sides of the rail by the first polishing assembly and the second polishing assembly respectively, can improve the polishing efficiency, and realizes the mechanization of polishing by moving the first polishing assembly by the first displacement assembly and moving the second polishing assembly by the second displacement assembly, improves the polishing efficiency and quality, saves labor cost and reduces labor intensity, improves the adaptability to the working environment, and the profile consistency of the polished welding reinforcement is higher, and the same polishing direction can be used for polishing, that is, the two sides of the rail are not polished at the same time, which avoids the influence of the excessively high polishing temperature on the polishing quality and the strength of the rail; the moving frame is arranged on the rail to be polished on site for polishing, which is more flexible in operation and facilitates continuous polishing of the welding reinforcement at different positions; and the first polishing assembly and the second polishing assembly can polish separately. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows, which form a part of the present application. The schematic embodiments of the present application and the description and explanation thereof do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a three-dimensional structure schematic view of a rail welding reinforcement polisher of the present application.

[0020] Figure 2This is a schematic diagram of the main structure of a rail weld grinding machine according to the present invention;

[0021] Figure 3 This is a second schematic diagram of the three-dimensional structure of a rail weld grinding machine according to the present invention;

[0022] Figure 4 Schematic diagram of force analysis when the first grinding member and the second grinding member of the present invention grind the top surface of the rail head;

[0023] Figure 5 This is a schematic diagram of force analysis when the first grinding member and the second grinding member of the present invention grind the side of the rail;

[0024] Figure 6 Schematic diagram of force analysis when the first grinding member and the second grinding member of the present invention grind the rail bottom;

[0025] Figure 7 It is a structural schematic diagram of the first grinding roller of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the second grinding roller of the present invention;

[0027] Figure 9 is a schematic diagram of the three-dimensional structure of the first clamping assembly of the present invention;

[0028] Figure 10 This is a schematic diagram of the main structure of the first clamping assembly of the present invention;

[0029] Figure 11 A schematic diagram of the grinding tracks of the first grinding member and the second grinding member of the present invention;

[0030] Figure 12 Schematic diagram of the grinding circuits of the first grinding member and the second grinding member of the present invention.

[0031] Description of reference numerals:

[0032] 1. mobile frame; 11. frame; 12. first walking wheel; 13. first clamping assembly; 131. first main body; 1311. first accommodating groove; 1312. first accommodating recess; 132. first clamping plate; 1321. first through hole; 133. first tightening bolt; 134. first enclosing strip; 135. first guide rod; 14. auxiliary correction assembly; 141. crossbar; 142. second walking wheel; 143. second clamping assembly; 2. first polishing assembly; 21. first mounting frame; 221. first mounting plate; 222. first support; 22. first driving assembly; 221. first motor; 222. first driving roller; 223. first driven roller; 224. first polishing roller; 2241. first cylindrical body; 2242. first protection structure; 225. first tensioning wheel; 23. first polishing piece; 24. first force measuring element; 25. first cooling fan; 3. first displacement assembly; 4. second polishing assembly; 41. second mounting frame; 421. second mounting plate; 422. second support; 42. second driving assembly; 421. second motor; 422. second driving roller; 423. second driven roller; 424. second polishing roller; 4241. second cylindrical body; 4242. second protection structure; 425. second tensioning wheel; 43. second polishing piece; 44. second force measuring element; 45. second cooling fan; 5. second displacement assembly; 6. housing; 7. third fan; 8. temperature measuring element; 9 polishing track confirming assembly; 10. controller. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in conjunction with specific embodiments of the present application and corresponding drawings. In the description of the present application, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the context clearly indicates otherwise.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be magnetic connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. 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. In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three or more, etc., unless otherwise explicitly specified and limited.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0036] To solve the problems in the prior art, the embodiments of the present application provide a rail welding rib polisher.

[0037] As shown in Figure 1 and Figure 2 , a rail welding rib polisher comprises a moving frame 1, a first polishing assembly 2, a first displacement assembly 3, a second polishing assembly 4 and a second displacement assembly 5; the moving frame 1 can be erected on a rail and can move along and be fixed on the rail; the first displacement assembly 3 and the second displacement assembly 5 are respectively installed on the moving frame 1; a moving end of the first displacement assembly 3 is connected with the first polishing assembly 2 for driving the first polishing assembly 2 to move along XYZ axes; a moving end of the second displacement assembly 5 is connected with the second polishing assembly 4 for driving the second polishing assembly 4 to move along XYZ axes; the first polishing assembly 2 and the second polishing assembly 4 are respectively used for polishing welding ribs on opposite sides of the rail, and the moving directions of the first polishing assembly 2 and the second polishing assembly 4 are the same when polishing around the rail. Wherein, the X direction is the direction close to or away from the rail (i.e. the rail width direction), the Y direction is the direction along the rail extension, and the Z direction is the rail height direction.

[0038] The rail welding rib polisher of the present application can improve the polishing efficiency based on the first polishing assembly 2 and the second polishing assembly 4 respectively polishing the welding ribs on both sides of the rail, and realizes the mechanization of polishing, improves the polishing efficiency and quality, saves the labor cost and reduces the labor intensity, improves the adaptability to the working environment, and the profile consistency of the polished welding rib is higher. The first polishing assembly 2 and the second polishing assembly 4 can be operated simultaneously, or a single one can work, and can be polished in the same polishing direction, i.e. not simultaneously polishing the two opposite sides of the rail, avoiding the influence of the too high polishing temperature on the polishing quality and the rail strength. The moving frame 1 is erected on the rail to be polished on site for polishing, which is more flexible in operation and facilitates continuous polishing of the welding rib at different positions. And the first polishing assembly 2 and the second polishing assembly 4 can polish separately.

[0039] In some preferred embodiments, as shown in Figure 12 , one of the first polishing assembly 2 and the second polishing assembly 4 starts polishing from the rail head, and the other starts polishing from the rail bottom, and both move in the same direction around the rail section, such as clockwise or counterclockwise.

[0040] In some preferred embodiments, the first grinding assembly 2 and the second grinding assembly 4 each grind one half of the rail along the centerline of the cross section; thus, the grinding feed is avoided to be affected by grinding the rail head top surface and the rail bottom to more than half of the position.

[0041] In some preferred embodiments, as shown in Figure 11 the first grinding assembly 2 and the second grinding assembly 4 are moved along the direction of the weld extending direction, and are also moved towards the direction of the rail extending direction, i.e. the moving track is generally in the shape of a broken line, so as to improve the utilization of the first grinding assembly 2 and the second grinding assembly 4.

[0042] In some preferred embodiments, as shown in Figure 1 and Figure 3 the grinding track confirmation assembly 9 and the controller 10 are further included; the grinding track confirmation assembly 9 is used to obtain the profile of the weld to be ground and the profile of the rail, and the controller 10 is connected to the grinding track confirmation assembly 9 and the first displacement assembly 3 and the second displacement assembly 5, and is used to obtain the grinding track according to the profile of the weld to be ground, the profile of the rail and the requirement of the grinding (for example, the weld is required to be 0.3mm higher than the surface of the rail, and the grinding track is 0.3mm outwardly expanded from the profile of the rail), and control the first displacement assembly 3 and the second displacement assembly 5 to move; specifically, the grinding track confirmation assembly 9 is a laser range finder; the first laser range finder 91 is arranged opposite to the side surface of the rail, and is used to measure the profile of the weld of the rail waist and the rail bottom and the rail, and the second laser range finder 92 is inclined downwardly, and is used to measure the profile of the weld of the rail head top surface and the rail, and after grinding, the grinding track confirmation assembly 9 is used to measure the distance between the weld and the rail profile after grinding again to determine whether the requirement is met, and if not, the grinding is performed again until the requirement is met.

[0043] In some preferred embodiments, as shown in Figure 2 and Figure 3As shown, the first polishing assembly 2 comprises a first mounting frame 21, a first driving assembly 22, a first polishing piece 23 and a first force measuring element 24; the first mounting frame 21 is fixed to the moving end of the first displacement assembly 3; the first driving assembly 22 is installed on the first mounting frame 21 and used to drive the first polishing piece 23; one side of the first polishing piece 23 is hinged to the first mounting frame 21 and the rotating direction is perpendicular to the extending direction of the steel rail; the other side of the first polishing piece 23 is fixed to the first mounting frame 21 through the first force measuring element 24; specifically, the first polishing piece 23 is connected to the measuring end of the first force measuring element 24, and the first force measuring element 24 is fixed on the first mounting frame 21; the first force measuring element 24 is used to measure the force between the first polishing piece 23 and the steel rail when the first polishing piece 23 polishes the rail head, rail waist and rail bottom of the steel rail; based on the measurement of the force when the first force measuring element 24 polishes, the feed amount of the first displacement assembly 3 can be adjusted based on the measurement value to ensure that the force is within a suitable range, avoid that the force is too large to cause damage to the driving equipment of the first polishing piece 23, and the force is too small to affect the polishing efficiency; the specific force range can be determined according to the working conditions and is not limited here.

[0044] Preferably, as Figures 4-6 shown, the first force measuring element 24 is a tension and compression force sensor, and is hinged on one side of the first polishing piece 23 and is fixed on the other side through the first force measuring element 24, so that a measurement value can be generated during the polishing operation when the first polishing piece 23 polishes the rail head, rail waist and rail bottom of the steel rail; when polishing the top surface of the rail head, the first force measuring element 24 is subjected to tension; when polishing the side surface (including the side surface of the rail head and the rail waist) and the rail bottom of the steel rail, the first force measuring element 24 is subjected to compression, thereby realizing measurement of the force during the entire polishing process by a single measuring element, and the structure is simple; the same measuring element is used for measurement, and deviation caused by different measuring elements can be avoided, so that the measurement is more accurate.

[0045] Preferably, the first polishing piece 23 can be a polishing wheel type (polishing roller) polishing device or a polishing belt type polishing device; the surface (roller surface) or belt surface faces the welding rib.

[0046] Further preferably, as Figure 2As shown, the first driving assembly 22 is a belt driving assembly; the first polishing member 23 is a polishing belt, which is arranged around the first driving assembly 22, and the part of the polishing belt adhering to the first polishing roller 224 of the first driving assembly 22 is a polishing part, and the part of the polishing part adhering to the first polishing roller 224 is greater than or equal to half of the circumference of the first polishing roller 224; based on the adoption of the polishing belt, the polishing position of the polishing belt can be cooled, and the polishing quality can be ensured; the polishing belt is arranged around at least half of the roller surface of the first polishing roller 224, and thus the polishing belt on the top, bottom and side of the first polishing roller 224 facing the rail serves as a polishing part, and the polishing belt on one polishing roller can realize the polishing of the rail head, rail waist and rail bottom.

[0047] Further preferably, as shown in Figure 7 As shown, the first polishing roller 224 comprises a first cylindrical body 2241 and a first protection structure 2242; the first protection structure 2242 is arranged at both ends of the first cylindrical body 2241 and protrudes in the radial direction from the circumferential surface of the first cylindrical body 2241 and is higher than the polishing belt. Optionally, the first protection structure 2242 is an annular flange integrally formed at both ends of the side surface of the first cylindrical body 2241, and the first protection structure 2242 is higher than the surface of the polishing belt, which is used to ensure that the polishing belt does not polish the rail structure except the welding ribs; optionally, the first protection structure 2242 is higher than 0.3 mm, and can also be other sizes, which are determined according to the polishing requirements.

[0048] Further preferably, the first protection structure 2242 is a disc-shaped structure coaxially arranged with the first cylindrical body 2241 and can rotate relative to the first cylindrical body 2241, i.e., is arranged parallel to the end surface of the first cylindrical body 2241; based on this, the first protection structure 2242 does not rotate with the first cylindrical body 2241, but rolls along the surface of the rail, and thus the wear of the first protection structure 2242 when it contacts the surface of the rail can be reduced, and the limiting effect can be ensured.

[0049] Preferably, as shown in Figures 4-6 As shown, the polishing belt corresponds to the top, bottom and side facing the rail of the first polishing roller 224, which is a polishing part for polishing, wherein the top is used for polishing the rail bottom, the bottom is used for polishing the rail head, and the side facing the rail is used for polishing the rail waist.

[0050] Preferably, the first heat dissipation fan 25 is arranged inside the annular polishing belt, and the air outlet direction is away from the position where the first polishing member 23 contacts the rail, and the first heat dissipation fan 25 is used to cool the polishing belt to avoid the influence of the high temperature of the polishing belt on the polishing effect; and the polishing debris on the polishing belt can be blown off, and the normal work of the polishing track confirmation assembly 9 can be ensured.

[0051] Preferably, as shown in Figure 2 andFigure 3 As shown, the first mounting frame 21 comprises a first mounting plate 211 and a first support 212; the first support 212 is hingedly connected to the first mounting plate 211 at one side, and connected to the first mounting plate 211 at the other side through the first force measuring element 24; the first driving assembly 22 comprises a first motor 221, a first driving roller 222, a plurality of first driven rollers 223 and a first grinding roller 224; the first motor 221 and the plurality of first driven rollers 223 are mounted on the first mounting plate 211; the first driving roller 222 is connected to the rotating shaft of the first motor 221; the first grinding roller 224 is mounted on the first support 212; the grinding belt is wound around the first driving roller 222, the plurality of first driven rollers 223 and the first grinding roller 224, and the grinding belts on both sides of the first grinding roller 224 are parallel, and the grinding belt corresponding to the first grinding roller 224 is the grinding part.

[0052] Further preferably, a first tensioning wheel 225 is further included for maintaining the tension of the grinding belt.

[0053] Further preferably, the first support 212 is in L-shaped structure, the top end of the vertical side (Z-axis direction) is rotatably connected to the first mounting plate 211, the bottom end is connected to the first mounting plate 211 through the first force measuring element 24, and the first force measuring element 24 is towards the horizontal side of the L-shaped structure, and the end of the horizontal side is provided with the first grinding roller 224, and the horizontal side extends along the X-axis direction, so that the roller surface of the first grinding roller 224 faces the welding reinforcement to be ground. Thus, it is convenient to calculate the force between the first force measuring element 24, the first grinding roller 224 and the welding reinforcement (the calculation can be performed by measuring value and force analysis, and specific reference can be made to existing mechanical calculation data, which is not described herein), and the grinding belt between the first grinding roller 224 and the driven roller 223 can be prevented from contacting the welding reinforcement to be ground, so as to affect the grinding amount and further affect the grinding quality.

[0054] In some preferred embodiments, as shown in Figure 2 As shown, the first grinding assembly 2 further comprises a first cooling fan 25; the first cooling fan 25 is used for cooling the first grinding element 23. Preferably, the outflow direction of the first cooling fan 25 is away from the position where the first grinding assembly 2 contacts the rail; that is, the outflow direction is not directed to the grinding position, so as to avoid the scattered debris to cause environmental pollution.

[0055] In some preferred embodiments, as shown in Figure 2 and Figure 3As shown, the second polishing assembly 4 comprises a second mounting frame 41, a second driving assembly 42, a second polishing piece 43 and a second force measuring element 44; the second mounting frame 41 is fixed to the moving end of the second displacement assembly 5; the second driving assembly 42 is installed on the second mounting frame 41 and is used to drive the second polishing piece 43; one side of the second polishing piece 43 is hinged to the second mounting frame 41 and the rotation direction is perpendicular to the extending direction of the steel rail; the other side of the second polishing piece 43 is fixed to the second mounting frame 41 through the second force measuring element 44; specifically, the second polishing piece 43 is connected to the measuring end of the second force measuring element 44, and the second force measuring element 44 is fixed on the second mounting frame 41; the second force measuring element 44 is used to measure the force between the second polishing piece 43 and the steel rail when the second polishing piece 43 polishes the rail head, rail waist and rail bottom of the steel rail; based on the measurement of the force when the second force measuring element 44 polishes, the feed amount of the second displacement assembly 5 can be adjusted based on the measurement value to ensure that the force is within a suitable range, avoid damage to the driving equipment of the second polishing piece 43 due to excessive force, and avoid affecting the polishing efficiency due to insufficient force; the specific force range can be determined according to the working conditions and is not limited here.

[0056] Preferably, as Figures 4-6 shown, the second force measuring element 44 is a tension and compression force sensor, and is hinged on one side of the second polishing piece 43 and is fixed on the other side through the second force measuring element 44, so that a measurement value can be generated during the polishing operation when the second polishing piece 43 polishes the rail head, rail waist and rail bottom of the steel rail; when polishing the top surface of the rail head, the second force measuring element 44 is subjected to tension; when polishing the side surface (including the side surface of the rail head and the rail waist) and the rail bottom of the steel rail, the second force measuring element 44 is subjected to compression, thereby realizing measurement of the force during the entire polishing process by a single measuring element, and the structure is simple; the same measuring element is used for measurement, which can also avoid the deviation caused by different measuring elements, so that the measurement is more accurate.

[0057] Preferably, the second polishing piece 43 can be a polishing wheel type (polishing roller) polishing device or a polishing belt type polishing device; the surface (roller surface) or belt surface faces the welding bead.

[0058] Further preferably, as Figure 2As shown, the second driving assembly 42 is a belt driving assembly; the second polishing member 43 is a polishing belt, which is arranged around the second driving assembly 42, and the part of the polishing belt adhering to the second polishing roller 424 of the second driving assembly 42 is a polishing part, and the part of the polishing part adhering to the second polishing roller 424 is greater than or equal to half of the circumference of the second polishing roller 424; based on the adoption of the polishing belt, the polishing position of the polishing belt is cooled, and the polishing quality is ensured; the polishing belt is arranged around at least half of the roller surface of the second polishing roller 424, and thus the polishing belt on the top, bottom and side of the second polishing roller 424 facing the rail serves as a polishing part, and the polishing belt on one polishing roller can realize the polishing of the rail head, rail waist and rail bottom.

[0059] Further preferably, as shown in Figure 8 As shown, the second polishing roller 424 comprises a second cylindrical body 4241 and a second protection structure 4242; the second protection structure 4242 is arranged at both ends of the second cylindrical body 4241 and protrudes in the radial direction from the circumferential surface of the second cylindrical body 4241 and is higher than the polishing belt. Optionally, the second protection structure 4242 is an annular flange integrally formed at both ends of the side surface of the second cylindrical body 4241, and the second protection structure 4242 is higher than the surface of the polishing belt, which is used to ensure that the polishing belt does not polish the rail structure except the welding ribs; optionally, the second protection structure 4242 is higher than 0.3 mm, and can also be other sizes, which are determined according to the polishing requirements.

[0060] Further preferably, the second protection structure 4242 is a disc-shaped structure coaxially arranged with the second cylindrical body 4241 and can rotate relative to the second cylindrical body 4241, i.e. is arranged parallel to the end surface of the second cylindrical body 4241; based on this, the second protection structure 4242 does not rotate with the second cylindrical body 4241, but rolls along the surface of the rail, and thus the wear of the second protection structure 4242 when it contacts the surface of the rail is reduced, and the limiting effect is ensured.

[0061] Preferably, as shown in Figures 4-6 As shown, the polishing belt corresponds to the top, bottom and side of the second polishing roller 424 facing the rail, which is a polishing part, wherein the top is used for polishing the rail bottom, the bottom is used for polishing the rail head, and the side facing the rail is used for polishing the rail waist.

[0062] Preferably, it further comprises a second cooling fan 45 arranged inside the polishing belt, and the air outlet direction is away from the position where the second polishing member 43 contacts the rail, and the second cooling fan 45 is used to cool the polishing belt to avoid the influence of the high temperature of the polishing belt on the polishing effect; and the polishing debris on the polishing belt can be blown off, and the normal work of the polishing track confirmation assembly 9 can be ensured.

[0063] Preferably, as shown in Figure 2 andFigure 3 As shown, the second mounting frame 41 comprises a second mounting plate 411 and a second support 412; the second support 412 is hinged to the second mounting plate 411 at one side, and connected to the second mounting plate 411 at the other side through the second force measuring element 44; the second driving assembly 42 comprises a second motor 421, a second driving roller 422, a plurality of second driven rollers 423 and a second grinding roller 424; the second motor 421 and the plurality of second driven rollers 423 are mounted on the second mounting plate 411; the second driving roller 422 is connected to the rotating shaft of the second motor 421; the second grinding roller 424 is mounted on the second support 412; the grinding belt is wound around the second driving roller 422, the plurality of second driven rollers 423 and the second grinding roller 424, and the grinding belts on both sides of the second grinding roller 424 are parallel, and the grinding belt corresponding to the second grinding roller 424 is the grinding part.

[0064] Further preferably, a second tensioning wheel 425 is further included for maintaining the tension of the grinding belt.

[0065] Further preferably, the second support 412 is in L-shaped structure, the top end of the vertical side (Z-axis direction) is rotationally connected to the second mounting plate 411, the bottom end is connected to the second mounting plate 411 through the second force measuring element 44, and the second force measuring element 44 faces the horizontal side of the L-shaped structure, and the end of the horizontal side is provided with the second grinding roller 424, and the horizontal side extends along the X-axis direction, so that the roller surface of the second grinding roller 424 faces the welding reinforcement to be ground. Thus, it is convenient to calculate the force between the second force measuring element 44, the second grinding roller 424 and the welding reinforcement (the calculation can be performed by measuring value and force analysis, and specific reference can be made to existing mechanical calculation data, which will not be described herein), and the grinding belt between the second grinding roller 424 and the driven roller 423 can be prevented from contacting the welding reinforcement to be ground, so as to affect the grinding amount and further affect the grinding quality.

[0066] In some preferred embodiments, as shown in Figure 2 Further preferably, the second grinding assembly 4 further comprises a second cooling fan 45; the second cooling fan 45 is used for cooling the second grinding element 43. Preferably, the outflow direction of the second cooling fan 45 is away from the position where the second grinding assembly 4 contacts the rail; that is, the outflow direction is not directed to the grinding position, so as to avoid the scattered debris to cause environmental pollution.

[0067] In some preferred embodiments, as shown in Figure 1 Further preferably, the housing 6 is provided with an air inlet, and the third fan 7 is arranged in the housing 6 and sends air into the housing 6 through the air inlet.

[0068] Preferably, at least two third fans 7 are included; each third fan 7 is arranged corresponding to the first grinding assembly 2 and the second grinding assembly 4 respectively.

[0069] Further preferably, when the first heat dissipation fan 25 and the second heat dissipation fan 45 are arranged, the third fan 7 is arranged at a position higher than the first heat dissipation fan 25 and the second heat dissipation fan 45, so as to form an air flow between the third fan 7 and the bottom outlet of the housing 6, facilitating the discharge of the ground debris.

[0070] In some preferred embodiments, as shown in Figure 1 The moving frame 1 includes a frame 11, a first walking wheel 12 and a first clamping assembly 13; the frame 11 has the first grinding assembly 2, the first displacement assembly 3, the second grinding assembly 4 and the second displacement assembly 5 mounted on the top, and the first walking wheel 12 and the first clamping assembly 13 mounted on the bottom; the first walking wheel 12 is used to roll on the rail head of the steel rail for grinding operation; the first clamping assembly 13 is used to clamp the side of the rail head of the steel rail for grinding operation, so as to fix the position of the frame 11; based on the arrangement of the first walking wheel 12 and the first clamping assembly 13, the grinder can move along the steel rail to grind different welds, facilitating the operation on site (with the completed rail installed); meanwhile, the position is fixed in the way that the first clamping assembly 13 clamps the two sides of the rail head, which is more stable.

[0071] In some preferred embodiments, as shown in Figure 9 and Figure 10 The first clamping assembly 13 includes a first main body 131, a first clamping plate 132 and a first tightening bolt 133; the first main body 131 has a first accommodating through slot 1311; the first accommodating through slot 1311 is used to accommodate the rail head of the steel rail; the first clamping plate 132 is arranged inside the first accommodating through slot 1311, for example, the first accommodating through slot 1311 is a through slot with a square cross section, the first clamping plate 132 is arranged parallel to the slot wall, and the top can be movably connected to the inner wall of the first accommodating through slot 1311 by approaching or moving away from the inner wall of the first accommodating through slot 1311; one end of the first tightening bolt 133 penetrates through the first main body 131 and abuts against the first clamping plate 132, so that the first clamping plate 132 can abut against the rail head of the steel rail; when clamping the steel rail, the moving frame 1 is placed on the rail head, the rail head is located inside the first accommodating through slot 1311, the first clamping plate 132 is located on one side of the rail head, and the first tightening bolt 133 is tightened until the first clamping plate 132 clamps the rail head (in cooperation with the inner wall of the first accommodating through slot 1311 on the other side), so as to fix the position. Based on the cooperation of the first clamping plate 132 arranged movably and the first tightening bolt 133, the rail head can be clamped to adapt to different rail head shapes and track radii, and the clamping is more stable and has wider applicability.

[0072] Preferably, the inner wall of the first accommodating channel 1311 has a first accommodating recess 1312 for accommodating the first clamping plate 132; based on this, the width of the first accommodating channel 1311 can be reduced; when the mobile rack 1 is installed, the symmetry of the two sides (the first polishing assembly 2 and the first displacement assembly 3 and the second polishing assembly 4 and the second displacement assembly 5 are symmetrically arranged) is improved.

[0073] In some preferred embodiments, as shown in Figure 9 The first clamping assembly 13 further comprises a first enclosing strip 134 and a first guide rod 135; the first enclosing strip 134 is arranged at the top of the first clamping plate 132 and is fixed to the inner wall of the first accommodating channel 1311 at the end; one end of the first guide rod 135 is fixed to the inner wall of the first accommodating channel 1311 and the other end is arranged on the first enclosing strip 134; the first clamping plate 132 has a first through hole 1321; the first guide rod 135 is arranged in the first through hole 1321 and the first clamping plate 132 can move towards or away from the inner wall of the first accommodating channel 1311 along the first guide rod 135, thereby clamping the rail head; based on the first guide rod 135 guiding the moving direction of the first clamping plate 132, it is ensured that the first clamping plate 132 can clamp the side of the rail head, thereby ensuring the clamping area and the stability of clamping; and the arrangement of the first enclosing strip 134 can improve the stability of the installation of the first guide rod 135.

[0074] Preferably, the size of the first through hole 1321 is larger than the cross-sectional size of the first guide rod 135; based on this, the first clamping plate 132 can form different angles with the clamped side of the rail head to adapt to the clamping of rails with different radii; the size difference is greater than 1-3 mm.

[0075] Preferably, the first clamping assembly 13 comprises at least two first guide rods 135; the two first guide rods 135 are arranged in parallel and at intervals, so that the guiding is better.

[0076] Preferably, the bottom of the first clamping plate 132 is lower than the bottom of the rail head and is curved away from the inner wall of the first accommodating channel 1311 to form a shape limiting portion with the inner wall of the first accommodating channel 1311 on the other side; the width of the limiting portion is at least smaller than the maximum width of the rail head, so as to prevent the rail head from being separated from the first clamping assembly 13.

[0077] Preferably, the mobile rack 1 is made of aluminum alloy material to reduce the weight of the equipment and facilitate on-site installation and disassembly.

[0078] In some preferred embodiments, as shown in Figure 1As shown, the mobile frame 1 further comprises an auxiliary alignment assembly 14; one side of the auxiliary alignment assembly 14 is connected to the frame 11, and the other side can be mounted on the rail which is not in the grinding operation, and can move along the rail and be fixed on the rail; based on the setting of the auxiliary alignment assembly 14, the stability of the mobile frame 1 can be improved, especially for the rails at the turning of the railway, one side is high and the other side is low, the setting of the auxiliary alignment assembly 14 can ensure the stability of the frame 11 and prevent deflection, thereby ensuring the stability of the grinding effect.

[0079] In some preferred embodiments, the auxiliary alignment assembly 14 comprises a crossbar 141, a second walking wheel 142 and a second clamping assembly 143; one end of the crossbar 141 is connected to the frame 11, and the other end is above the rail which is not in the grinding operation, and is connected to the second walking wheel 142 and the second clamping assembly 143; the second walking wheel 142 is used for walking on the rail; the second clamping assembly 143 is used for clamping the rail head; based on this, the auxiliary alignment assembly 14 has simple structure and light weight, and is convenient to carry.

[0080] Preferably, the second clamping assembly 143 has the same structure as the first clamping assembly 13, which will not be described here.

[0081] In some preferred embodiments, a temperature measuring element 8 is further included; the temperature measuring element 8 is used for measuring the temperature of the first grinding assembly 2 and the second grinding assembly 4. For example, the temperature measuring element 8 is arranged in the ring surrounded by the grinding belt to measure the temperature of the grinding belt, thereby adjusting the air supply amount of the first cooling fan 25 and the second cooling fan 45 to avoid the influence of high temperature on the grinding effect.

[0082] In some preferred embodiments, as shown in Figure 1 and Figure 2 The first displacement assembly 3 and the second displacement assembly 5 can select existing XYZ displacement assemblies, for example, adopt a combination transmission mode of screw rod transmission and sliding block sliding rail, or other forms capable of realizing XYZ three-axis displacement.

[0083] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which all belong to the protection of the present application.

Claims

1. A rail tie bar grinder characterized by, The mobile frame, the first polishing assembly, the first displacement assembly, the second polishing assembly and the second displacement assembly are included. The mobile frame can be erected on the steel rail and can be fixed on the steel rail. The first displacement assembly and the second displacement assembly are respectively installed on the mobile frame. The moving end of the first displacement assembly is connected with the first polishing assembly, and is used to drive the first polishing assembly to move along the XYZ axis. The moving end of the second displacement assembly is connected with the second polishing assembly, and is used to drive the second polishing assembly to move along the XYZ axis. The first polishing assembly and the second polishing assembly are respectively used for polishing the welding ribs on the opposite sides of the steel rail, and the moving directions of the first polishing assembly and the second polishing assembly are the same when they polish around the steel rail.

2. The rail tie bar grinder of claim 1 wherein, The first polishing assembly includes a first mounting frame, a first driving assembly, a first polishing piece and a first force measuring element. The first mounting frame is fixed on the moving end of the first displacement assembly. The first driving assembly is installed on the first mounting frame and is used to drive the first polishing piece. One side of the first polishing piece is hinged to the first mounting frame, and the rotating direction is perpendicular to the extending direction of the steel rail, and the other side is fixed to the first mounting frame through the first force measuring element. The first force measuring element is used to measure the force between the first polishing piece and the steel rail when the first polishing piece polishes the rail head, rail waist and rail bottom of the steel rail.

3. The rail weld grinding machine according to claim 2, characterized in that: The first driving assembly is a belt drive type driving assembly. The first polishing piece is a polishing belt, which is arranged around the first driving assembly, and the part of the polishing belt that is attached to the first polishing roller of the first driving assembly is a polishing part. The part of the polishing part that is attached to the first polishing roller is greater than or equal to half the circumference of the first polishing roller.

4. The rail tie bar grinder of claim 2 wherein, The first polishing assembly further includes a first cooling fan. The first cooling fan is used to cool the first polishing piece.

5. The rail tie bar grinder of claim 1 wherein, The second polishing assembly includes a second mounting frame, a second driving assembly, a second polishing piece and a second force measuring element. The second mounting frame is fixed on the moving end of the second displacement assembly. The second driving assembly is installed on the second mounting frame and is used to drive the second polishing piece. One side of the second polishing piece is hinged to the second mounting frame, and the rotating direction is perpendicular to the extending direction of the steel rail, and the other side is fixed to the second mounting frame through the second force measuring element. The second force measuring element is used to measure the force between the second polishing piece and the steel rail when the second polishing piece polishes the rail head, rail waist and rail bottom of the steel rail.

6. The rail tie bar grinder of claim 5 wherein, The second driving assembly is a belt drive type driving assembly. The second polishing piece is a polishing belt, which is arranged around the second driving assembly, and the part of the polishing belt that is attached to the second polishing roller of the second driving assembly is a polishing part, and the part of the polishing part that is attached to the second polishing roller is greater than or equal to half the circumference of the second polishing roller.

7. The rail tie bar grinder of claim 5 wherein, The second polishing assembly further includes a second cooling fan. The second cooling fan is used to cool the second polishing piece.

8. The rail tie bar grinder of claim 1 wherein, Further including a housing and a third fan. The shell cover is arranged on the first polishing assembly, the first displacement assembly, the second polishing assembly and the second displacement assembly, and the bottom is an open structure for polishing debris; The third fan is arranged on the shell and sends air into the shell through the air inlet on the shell.

9. The rail tie bar grinder of claim 1 wherein, The moving frame comprises a frame, a first walking wheel and a first clamping assembly; The frame is provided with the first polishing assembly, the first displacement assembly, the second polishing assembly and the second displacement assembly at the top, and is provided with the first walking wheel and the first clamping assembly at the bottom; The first walking wheel is used for rolling on the rail head of the steel rail for polishing work; The first clamping assembly is used for clamping the side surface of the rail head of the steel rail for polishing work to fix the position of the frame.

10. The rail tie bar grinder of claim 1 wherein, A temperature measuring element is further included; the temperature measuring element is used for measuring the temperature of the first polishing assembly and the second polishing assembly.

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