Hand-push type single-side steel rail web grinding machine

Abstract

The invention relates to a hand-push type single-side steel rail web grinding machine. Comprising an inverted-L-shaped main machine frame, a movable side top plate, a handle push rod, an open motor inner box, a T-shaped vertical sliding plate, a large torsion steering engine, a pneumatic ejector rod, a convex edge rail wheel, a rail jaw holding wheel, an electric grinding main machine, a force unloading lateral pull handle, a shock absorber, an L-shaped piece, an output shaft stabilizing flange, a fixed gear, an arc-shaped rack, a bent lever fixing base, an arc bent lever, a bent lever sliding block base, a bent lever inner wheel and a fixed shaft bearing. The inner box is provided with an inner box fixed rotating shaft, an ejector rod support, a small guide rail, a small sliding block and a side ejector plate. The electric grinding main machine is controlled to swing up and down around the fixed circle center, the grinding wheel can reach any position of the rail web and is basically perpendicular to the rail web grinding face all the time, the whole device is convenient to assemble and disassemble, easy and labor-saving to operate, high in working efficiency, light and convenient to carry, the construction efficiency can be greatly improved, and the labor intensity of workers is relieved. And the device is very suitable for on-site steel rail web polishing construction.

Description

Technical Field

[0001] The invention belongs to the technical field of rail grinding construction, and particularly relates to a hand-pushed single-side rail web grinding machine. Background Art

[0002] Rail grinding is an important process required both before and after rail welding. Common rail grinding includes rail head grinding, rail bottom grinding, and rail web grinding. During factory welding operations, large welding equipment is generally used, and a pipeline-type auxiliary automation device is equipped before and after welding. The grinding processes at the three positions can be completed by automated equipment on the production line, with a high degree of automation. During on-site welding construction of rails, however, it is not possible to use the large-scale automated welding and auxiliary process equipment used in factory welding. On-site grinding generally can only be completed manually, that is, workers hold a grinding wheel grinder to complete the grinding of the rail head, rail bottom, and rail web. In some areas, a small profiling rail head grinding machine is used for rail head grinding, and its grinding efficiency is better than that of general manual grinding. There is currently no ready-made equipment or technology for rail bottom and rail web grinding, especially for on-site rail web grinding. The reason is that the positions of the rail web and rail bottom are relatively special. The rail web is the part sandwiched between the rail head and the rail bottom. From the cross-section, the rail head and rail bottom protrude outward, and the rail web becomes the concave part inside. Therefore, it is very difficult to avoid interference from the rail head and rail bottom during rail web grinding. Another reason is that the surface of the rail web is not a standard plane, and the two side surfaces of the rail web are symmetric variable-curvature surfaces. This makes it necessary for the rail web grinding to adapt to the curvature changes at different positions of the rail web, thus greatly increasing the technical difficulty of grinding. Currently, all on-site grinding of the rail web is done manually with a hand-held grinding wheel. Generally, workers need to grind the surface of about 50 cm on both sides of the weld. It is necessary to completely remove the rust layer to expose the bright base metal. The grinding process is time-consuming and laborious, and the grinding quality varies unevenly with different personnel operations. In severe cases, it will significantly affect the welding quality, resulting in defects such as lack of fusion or porosity at the rail web. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a hand-pushed single-side rail web grinding machine to solve the problem that current on-site rail web grinding must be done manually and there is no automatic or semi-automatic rail web grinding equipment.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A hand-pushed single-sided rail waist grinding machine, comprising an inverted L-shaped main frame, a movable side top plate, a handrail push rod, an open motor inner box, a T-shaped vertical slide plate, a large torsion servo, a pneumatic ejector rod, a convex-edge track wheel, a rail jaw clamping wheel, an electric grinding main machine, a force-relieving side pull handle, a shock absorber, an L-shaped part, an output shaft stabilizing flange, a fixed gear, an arc-shaped rack, a curved lever fixing seat, an arc-shaped curved lever, a curved lever slider seat, a curved lever inner wheel, a fixed-axis bearing, an inner box fixed rotating shaft, a push rod support, a small guide rail, a small slider and a side top plate top clamp;

[0006] One side of the inverted L-shaped main frame is connected to the movable side top plate through a shaft. The inverted L-shaped main frame is connected to the convex-edge track wheel through two wheel shafts below this side. A rail jaw clamping wheel is installed on the clamping wheel shaft at the end of the movable side top plate. The movable side top plate is connected to the side top plate top clamp through a shaft. The push rod foot of the handrail push rod is fixed to the upper surface of the upper table plate of the main frame of the inverted L-shaped main frame;

[0007] Both sides of the U-shaped side extension plate on the other side of the inverted L-shaped main frame are fixedly connected to two pneumatic ejector rods through a push rod support. The end of the telescopic rod of the pneumatic ejector rod is connected to the shock absorber. Above the two shock absorbers, they are respectively connected to the two ends of the force-relieving side pull handle through fixed holes. Below the two shock absorbers, they are connected to the two T-shaped vertical slide plates on the left and right through L-shaped parts. Small guide rails are respectively arranged on both sides below the U-shaped side extension plate of the inverted L-shaped main frame. The T-shaped vertical slide plate is fixed to the small slider through a small slider fixing hole. The two T-shaped vertical slide plates are slidably connected to the small guide rails on both sides through the small sliders;

[0008] The inner side wall of the T-shaped vertical slide plate is connected to the arc-shaped curved lever through a curved lever fixing seat. The electric grinding main machine is fixed in the open motor inner box through a main motor fixing frame. Curved lever slider seats and inner box fixed rotating shafts are symmetrically installed on both outer walls of the open motor inner box. The curved lever inner wheels fixedly arranged on the curved lever slider seats can catch the arc-shaped curved lever on the same side and are in rolling connection with it. The other end of the inner box fixed rotating shaft is rotationally connected to the T-shaped vertical slide plate on the same side through a fixed-axis bearing;

[0009] One of the T-shaped vertical slide plates is fixedly connected to the large torsion servo through a servo fixing hole. The output shaft of the large torsion servo extends out from the servo output shaft hole on the T-shaped vertical slide plate, and its end is fixedly connected to the fixed gear through a pin hole. The middle section of the output shaft of the large torsion servo passes through the bearing in the output shaft stabilizing flange. The output shaft stabilizing flange is concentrically fixed with the servo output shaft hole. An arc-shaped rack is fixed on the outer wall of the open motor inner box on the same side. The output shaft of the large torsion servo drives the fixed gear to mesh with the arc-shaped rack for transmission, so that the open motor inner box rotates and swings upward or downward along the arc-shaped curved lever with the inner box fixed rotating shaft as the center;

[0010] When the convex-edge track wheel is placed on the steel rail, the rail jaw clamping wheel can reach the rail jaw on one side of the steel rail. Under the thrust of the pneumatic ejector rod, the grinding wheel of the electric grinding main unit can be pushed against the web of the steel rail on the other side. The electric grinding main unit can swing up and down around the fixed inner box rotating shaft, so that the grinding surface of the grinding wheel can be adjusted up and down to the required grinding position.

[0011] To better implement the present invention, further optimization is made to the above structure. The output shaft of the electric grinding main unit points horizontally to the web surface of the rail, and the power is transmitted to the horizontally installed grinding wheel through bevel gears inside it. During grinding, the outer cylindrical surface of the grinding wheel rubs against the web surface of the rail.

[0012] To better implement the present invention, further optimization is made to the above structure. The convex-edge track wheel installed under the inverted L-shaped main frame is placed on the rail head of the steel rail, which plays a supporting role for the grinding machine. The rail jaw clamping wheel installed inside the movable side top plate is tightly pressed against the lower edge of the rail jaw during operation, which plays a locking role for the steel rail. Since the center of gravity of the grinding machine is on one side of the U-shaped side extension plate of the inverted L-shaped main frame, the lateral self-weight of the grinding machine is converted into a locking force at the rail jaw clamping wheel through the support point at the rail head position, so that the grinding machine is automatically locked on the steel rail. At the same time, the grinding wheel is pushed against the web of the rail by the pneumatic ejector rod.

[0013] To better implement the present invention, further optimization is made to the above structure. The end of the telescopic rod of the pneumatic ejector rod is connected to the piston end of the shock absorber. The inside of the shock absorber is a spring, and the shock absorber housing is connected to the T-shaped vertical slide plate. The pneumatic ejector rod and the shock absorber are connected in series in a tightly clamped manner. When the grinding wheel encounters uneven surfaces and generates lateral displacement or high-speed bouncing, it will be transmitted to the T-shaped vertical slide plate through the series-connected and tightly clamped connection, and the T-shaped vertical slide plate will slide back and forth along the small guide rail. The connected shock absorber and pneumatic ejector rod will also be stressed and expand and contract together. When the pneumatic ejector rod is compressed, the jacking force remains unchanged, and the vibration generated when the grinding wheel encounters uneven surfaces is absorbed by the shock absorber.

[0014] To better implement the present invention, further optimization is made to the above structure. The curved lever slider seats are fixed on the symmetric two sides of the outer wall of the open motor inner box. There are two rows of thin shafts protruding upward on the curved lever slider seats, with 3 in one row and 2 in the other row, and they are arranged along a certain arc. The curved lever inner wheels are respectively installed on the thin shafts. The arc-shaped curved lever can pass through the space formed by these two rows of curved lever inner wheels and be clamped, so that the open motor inner box rotates and swings upward or downward along the arc-shaped curved lever with the fixed inner box rotating shaft as the center.

[0015] To better implement the present invention, further optimization is made to the above structure. The vertical distance between the axis of the fixed rotating shaft of the inner box and the axis of the grinding wheel is 17 cm. The variation range of the radius of the grinding wheel during the grinding process is 2 - 6 cm. When the open motor inner box rotates and swings up and down with the fixed rotating shaft of the inner box as the center, the rotation radius range of the grinding wheel and the entire electric grinding main machine is 19 - 23 cm. The radius of curvature of the web section is 20 cm, so that the radius dimensions of the two are kept consistent, enabling the grinding wheel to be perpendicular to the local surface of the web when grinding different positions of the web.

[0016] To better implement the present invention, further optimization is made to the above structure. The large torsion servo motor is fixed to the outside of the T-shaped vertical slide plate on the left side. The end of the output shaft of the large torsion servo motor is fixed to the fixed gear. The middle section of the output shaft of the large torsion servo motor passes through the bearing in the output shaft stabilizing flange. The fixed gear is in close engagement with the arc-shaped rack fixed to the outer wall of the open motor inner box on the same side. When the output shaft of the large torsion servo motor rotates, it drives the fixed gear to rotate together, driving the engaged arc-shaped rack to swing up and down, and further driving the electric grinding main machine in the open motor inner box to rotate up or down along the fixed rotating shaft of the inner box.

[0017] To better implement the present invention, further optimization is made to the above structure. The electric grinding main machine and the grinding wheel have two axial movements during the grinding operation, namely the forward and backward movement along the direction of the small guide rail and the up and down swinging movement with the fixed rotating shaft of the inner box as the center and along the arc-shaped lever.

[0018] To better implement the present invention, further optimization is made to the above structure. When the movable side top plate is pressed down from the open state to a specific angle, the side top plate latch will automatically snap into the position of the top pressing edge of the inverted L-shaped main frame, pressing the rail jaw clamping wheel tightly against the lower surface of the rail jaw of the rail.

[0019] To better implement the present invention, further optimization is made to the above structure. The two ends of the unloading side pull handle are loosely connected to the two shock absorbers, enabling the handle part of the unloading side pull handle to be lifted and pressed down at a certain angle. After pulling the unloading side pull handle outwards and gently pressing it down, the handle hook piece on the unloading side pull handle can be hooked to the outer side edge of the U-shaped side extension plate of the inverted L-shaped main frame, preventing the electric grinding main machine from returning to its original position and completely separating the grinding wheel from the rail.

[0020] To better implement the present invention, further optimization is made to the above structure. The hand push rod is a vertical short rod with a height of 50 cm, or the hand push rod is an obliquely extending long rod installed at a 45-degree angle with a length of 120 cm.

[0021] To better implement the present invention, further optimization is made to the above structure. The start-stop switch, up and down buttons, and speed regulation ring are integrated on one side handle of the hand push rod, which are used to control the start and stop of the motor, the up and down swing of the grinding wheel, and the rotation speed of the grinding wheel of the grinding machine.

[0022] The present invention has the following beneficial effects compared with the prior art:

[0023] At present, the grinding of the rail web on the online site still relies on manual grinding, and there is basically no automated technology that can be maturely applied, or automated or semi-automated rail web grinding equipment that can be widely promoted. The push-type single-sided rail web grinding machine provided by the present invention is a new type of portable special grinding equipment for the rail web, used for on-site rail web grinding construction, belonging to semi-automated grinding construction equipment. Its mechanical structure is designed compactly, the overall equipment is light and easy to carry, the operation and use are simple and convenient, and it has the advantages of simple and quick disassembly and assembly, simple and convenient operation, safe and labor-saving grinding, high construction efficiency, and can be applicable to various different types of rails. The structural design of the present invention adopts a balanced fixing method of two-point support and holding the rail on one side and pressing down the center of gravity on the opposite side; adopts a series connection and pressing method of a pneumatic ejector rod and a spring shock absorber, and at the same time cooperates with the design of a small guide rail to press the grinding wheel against the rail web, so that the pressing force of the grinding wheel during the grinding process always remains constant, and at the same time avoids high-frequency vibration; adopts the design of an arc-shaped curved bar guide rail and an arc-shaped rack to adapt to the arc of the rail web itself, controls the up and down swing of the electric grinding main body around a fixed center of the circle, so that the grinding wheel can reach any position of the rail web and the grinding wheel is always basically perpendicular to the grinding surface of the rail web. The overall equipment is convenient for installation and disassembly, simple and labor-saving in operation, convenient and safe in control, high in work efficiency, light in overall equipment and convenient to carry, which can greatly improve the construction efficiency, reduce the labor intensity of manual work, and is very suitable for on-site grinding construction of the rail web. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is a three-dimensional structural schematic diagram of the push-type single-sided rail web grinding machine of the present invention;

[0026] Figure 2 is Figure 1 an enlarged structural schematic diagram of the open motor inner box in

[0027] Figure 3 is one of the structural schematic diagrams of the inverted L-shaped main frame of the present invention;

[0028] Figure 4 is another structural schematic diagram of the inverted L-shaped main frame of the present invention;

[0029] Figure 5 is one of the structural schematic diagrams of the movable side top plate of the present invention;

[0030] Figure 6 It is the second schematic structural view of the movable side top plate in the present invention;

[0031] Figure 7 It is the side view of the movable side top plate in the present invention;

[0032] Figure 8 It is the schematic structural view of the handle push rod in the present invention;

[0033] Figure 9 It is the first schematic structural view of the open motor inner box and its fixed assembly components in the present invention;

[0034] Figure 10 It is the second schematic structural view of the open motor inner box and its fixed assembly components in the present invention;

[0035] Figure 11 It is the side view of the open motor inner box and its fixed assembly components in the present invention;

[0036] Figure 12 It is the schematic structural view of the T-shaped vertical slide plate and its fixed assembly components in the present invention;

[0037] Figure 13 It is the separate schematic structural view of the T-shaped vertical slide plate in the present invention;

[0038] Figure 14 It is the schematic structural view of the pneumatic ejector rod and its related mechanism in the present invention;

[0039] Figure 15 It is the schematic structural view of the grinding machine in the present invention when it is loosened on the rail;

[0040] Figure 16 It is the schematic structural view of the grinding machine in the present invention when it is clamped and fixed on the rail;

[0041] Figure 17 It is the schematic structural view of the grinding wheel of the grinding machine in the present invention when grinding the rail at the middle position of the rail web;

[0042] Figure 18 It is the schematic structural view of the grinding wheel of the grinding machine in the present invention when grinding the rail at the upper position of the rail web;

[0043] Figure 19 It is the schematic structural view of the grinding wheel of the grinding machine in the present invention when grinding the rail at the lower position of the rail web;

[0044] Figure 20 It is the three-dimensional schematic structural view of the grinding machine in the present invention placed on the rail.

[0045] In the figure:

[0046] 1. Inverted L-shaped main frame; 2. Movable side top plate; 3. Handle push rod; 4. Open motor inner box; 5. T-shaped vertical slide plate; 6. Large torsion servo; 7. Pneumatic ejector rod; 8. Convex-edge track wheel; 9. Rail jaw clamping wheel; 10. Fixed handle; 11. Movable handle; 12. Grinding wheel; 13. Electric grinding main machine; 14. Unloading side pull handle; 15. Shock absorber; 16. L-shaped part; 17. Output shaft stabilizing flange; 18. Fixed gear; 19. Arc-shaped rack; 20. Curved lever fixing seat; 21. Arc-shaped curved lever; 22. Curved lever slider seat; 23. Inner wheel of curved lever; 24. Fixed shaft bearing; 25. Fixed rotating shaft of inner box; 26. Ejector rod support; 27. Small guide rail; 28. Small slider; 29. Side top plate top clamp; 30. Top clamp dialing handle; 1-1. Upper table plate of frame; 1-2. U-shaped side extension plate; 1-3. Track wheel shaft; 1-4. Double top convex; 1-5. Tightening abutting edge; 1-6. Double shaft of side top plate; 1-7. Linkage groove; 2-1. Top clamp shaft; 2-2. Axle hole of side top plate; 2-3. Symmetrically inwardly folded pressing foot; 2-4. Clamping wheel shaft; 2-5. Double top platform; 3-1. Handle; 3-2. Push rod; 3-3. Push rod foot; 3-4. Rubber guard plate; 3-5. Start-stop switch; 3-6. Up-down button; 3-7. Speed regulation ring; 4-1. Fixed frame of main motor; 5-1. Output shaft hole of servo; 5-2. Fixed hole of servo; 5-3. Fixed hole of fixed rotating shaft; 5-4. Fixed hole of small slider; 5-5. Fixed hole of slider seat; 7-1. Telescopic rod; 14-1. Thin rod of handle; 14-2. Pull handle; 14-3. Hook piece of pull handle; 15-1. Upper connection of shock absorber; 15-2. Lower connection of shock absorber. Detailed implementation mode

[0047] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope protected by the present invention.

[0048] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0049] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Please refer to Figures 1 - 20 , a hand-pushed single-sided rail waist grinding machine provided by the present invention includes an inverted L-shaped main frame 1, a movable side top plate 2, a hand push rod 3, an open motor inner box 4, a T-shaped vertical slide plate 5, a large torque servo 6, a pneumatic ejector rod 7, a convex-edge track wheel 8, a rail jaw clamping wheel 9, an electric grinding main unit 13, a force-relieving side pull handle 14, a shock absorber 15, an L-shaped part 16, an output shaft stabilizing flange 17, a fixed gear 18, an arc-shaped rack 19, a curved lever fixing seat 20, an arc-shaped curved lever 21, a curved lever slider seat 22, a curved lever inner wheel 23, a fixed-axis bearing 24, an inner box fixed rotating shaft 25, a ejector rod support 26, a small guide rail 27, a small slider 28, and a side top plate top clamp 29 and other components.

[0051] One side of the inverted L-shaped main frame 1 is connected to the movable side top plate 2 through a side top plate double shaft 1-6, and the inverted L-shaped main frame 1 is connected to the convex-edge track wheel 8 through two track wheel shafts 1-3 below this side. A rail jaw clamping wheel 9 is installed on the clamping wheel shaft 2-4 at the end of the movable side top plate 2. The movable side top plate 2 is connected to the side top plate top clamp 29 through a top clamp shaft 2-1. The push rod foot 3-3 of the hand push rod 3 is fixed to the upper surface of the upper table plate 1-1 of the main frame of the inverted L-shaped main frame 1.

[0052] Both sides of the U-shaped side extension plate 1-2 on the other side of the inverted L-shaped main frame 1 are fixedly connected to two pneumatic ejector rods 7 through a ejector rod support 2-6. The end of the telescopic rod 7-1 of the pneumatic ejector rod 7 is connected to the shock absorber 15. The upper parts of the two shock absorbers 15 are respectively connected to the two ends of the force-relieving side pull handle 14 through fixing holes. The lower parts of the two shock absorbers 15 are connected to the two T-shaped vertical slide plates 5 on the left and right sides through an L-shaped part 16. Small guide rails 27 are respectively arranged and installed on both sides below the U-shaped side extension plate 1-2 of the inverted L-shaped main frame 1. The T-shaped vertical slide plate 5 is fixed to the small slider 28 through a small slider fixing hole 5-4. The two T-shaped vertical slide plates 5 are slidably connected to the small guide rails 27 on both sides through the small slider 28.

[0053] The inner wall of the T-shaped vertical slide plate 5 is connected to the arc-shaped curved bar 21 through the curved bar fixing seat 20. The electric grinding main machine 13 is fixed in the open motor inner box 4 through the main motor fixing bracket 4-1. Curved bar slider seats 22 and inner box fixed rotating shafts 25 are symmetrically installed on both outer walls of the open motor inner box 4. The curved bar inner wheel 23 fixedly arranged on the curved bar slider seat 22 can hold the arc-shaped curved bar 21 on the same side and is in rolling connection with it. The other end of the inner box fixed rotating shaft 25 is rotationally connected to the T-shaped vertical slide plate 5 on the same side through a fixed shaft bearing 24.

[0054] One side of the T-shaped vertical slide plate 5 is fixedly connected to the large torsion servo 6 through the servo fixing hole 5-2. The output shaft of the large torsion servo 6 extends out from the servo output shaft hole 5-1 on the T-shaped vertical slide plate 5, and its end is fixedly connected to the fixed gear 18 through a pin hole. The middle section of the output shaft of the large torsion servo 6 passes through the bearing in the output shaft stabilizing flange 17. The output shaft stabilizing flange 17 is concentrically fixed with the servo output shaft hole 5-1. An arc-shaped rack 19 is fixed on the outer wall of the open motor inner box 4 on the same side. The output shaft of the large torsion servo 6 drives the fixed gear 18 to mesh with the arc-shaped rack 19 for transmission, so that the open motor inner box 4 rotates and swings upward or downward along the arc-shaped curved bar 21 with the inner box fixed rotating shaft 25 as the center.

[0055] When the convex edge track wheel 8 is placed on the rail, the rail jaw clamping wheel 9 can reach the rail jaw on one side of the rail. Under the thrust of the pneumatic ejector rod 7, the grinding wheel 12 of the electric grinding main machine 13 can be pushed against the rail waist on the other side of the rail. The electric grinding main machine 13 can swing up and down around the inner box fixed rotating shaft 25, so that the grinding surface of the grinding wheel 12 can be adjusted up and down to the required grinding position.

[0056] When using this grinding machine, first quickly fix it to the rail through the locking mechanism of this grinding machine. At this time, the grinding wheel 12 abuts against the rail waist. The operator grabs the left and right handgrips 3-1 of the handgrip push rod 3 and presses the start-stop switch 3-5, then the grinding wheel 12 rotates at high speed. Rotating the speed regulating ring 3-7 can adjust the speed of the grinding wheel 12. At this time, hold the handgrip and push the grinding machine back and forth to grind the rail waist. During the grinding process, the up and down buttons 3-6 can be pressed to make the electric grinding main machine 13 swing up and down around the inner box fixed rotating shaft 25, so that the grinding surface of the grinding wheel 12 can be adjusted up and down to the required grinding position until the entire rail waist surface is ground.

[0057] The output shaft of the electric grinding main machine 13 points horizontally to the surface of the rail waist, and the power inside it is transmitted to the horizontally installed grinding wheel 12 through bevel gears. During grinding, the outer circumferential surface of the grinding wheel 12 rubs against the surface of the rail waist to produce a continuous grinding and removal effect.

[0058] The convex edge track wheels 8 installed below the inverted L-shaped main frame 1 are placed on the rail head of the steel rail, playing a supporting role for the grinding machine. The rail jaw clamping wheels 9 installed inside the movable side top plate 2 are tightly pressed against the lower edge of the rail jaw during operation, playing a locking role for the steel rail. Since the center of gravity of the grinding machine is on the side of the U-shaped side extension plate 1-2 of the inverted L-shaped main frame 1, the lateral gravity of the grinding machine itself is converted into the locking force at the rail jaw clamping wheels 9 through the support point at the rail head position, so that the grinding machine is automatically locked on the steel rail. At the same time, the grinding wheel 12 is pushed against the rail web by the pneumatic ejector rod 7, so that the rail jaw clamping wheels 9 will not be disengaged from the rail jaw position even when the grinding machine moves back and forth, thus making the grinding machine firmly fixed on the steel rail.

[0059] The end of the telescopic rod 7-1 of the pneumatic ejector rod 7 is connected to the piston end of the shock absorber 15. The inside of the shock absorber 15 is a spring, and the outer shell of the shock absorber 15 is connected to the T-shaped vertical slide plate 5. The grinding wheel 12 and the electric grinding main unit 13 are also connected and fixed to the T-shaped vertical slide plate 5 through mechanisms such as the open motor inner box 4, the arc-shaped lever 21, and the fixed-axis bearing 24. During the grinding operation, the pneumatic ejector rod 7 and the shock absorber 15 are connected in a series and tightly pressed manner. The lateral displacement or high-speed bounce generated when the grinding wheel 12 encounters an uneven surface will be transmitted to the T-shaped vertical slide plate 5 through the series and tight connection, and the T-shaped vertical slide plate 5 will slide back and forth along the small guide rail 27. The connected shock absorber 15 and pneumatic ejector rod 7 will also be stressed and telescoped together. When the pneumatic ejector rod 7 is compressed, the jacking force remains unchanged. Therefore, whether the position of the grinding wheel 12 changes or the diameter of the grinding wheel 12 changes significantly during grinding, the force that the grinding wheel 12 is pressed against the rail web surface remains unchanged. Even the vibration generated by the high-frequency bounce of the grinding wheel 12 on the uneven surface during high-speed rotation during the grinding process will be reduced and absorbed by the spring in the shock absorber 15.

[0060] The curved lever slider seats 22 are fixed on the symmetric two sides of the outer wall of the open motor inner box 4. There are two rows of thin shafts protruding upward on the curved lever slider seats 22, three in one row and two in the other row, and they are arranged along a certain arc. The curvature of the outer contour of the curved lever inner wheel 23 is approximately the same as the column section diameter of the arc-shaped lever 21. The curved lever inner wheels 23 are respectively installed on these thin shafts. The arc-shaped lever 21 can pass through the space formed by these two rows of curved lever inner wheels 23 and be clamped. The function of this design is the same as that of a slider sliding on a guide rail and bearing the supporting force, enabling the open motor inner box 4 to rotate and swing upward or downward along the arc-shaped lever 21 with the inner box fixed rotation shaft 25 as the center.

[0061] The vertical distance between the axis of the inner box fixed rotating shaft 25 and the axis of the grinding wheel 12 is 17 cm. The variation range of the radius of the grinding wheel 12 during the grinding process is 2 - 6 cm. Therefore, when the open motor inner box 4 rotates and swings up and down with the inner box fixed rotating shaft 25 as the center, the rotation radius range of the grinding wheel 12 and the entire electric grinding main machine 13 is 19 - 23 cm, and the radius of curvature of the rail web cross-section is 20 cm. The two are basically the same. Such a design enables the grinding wheel 12 to be basically perpendicular to the local surface of the rail web when grinding different positions of the rail web.

[0062] In this embodiment, the large torque servo motor 6 is fixed to the outside of the T-shaped vertical slide plate 5 on the left side. The end of the output shaft of the large torque servo motor 6 is fixed to the fixed gear 18. The middle section of the output shaft of the large torque servo motor 6 passes through the bearing inside the output shaft stabilizing flange 17, thus playing a role in stabilizing the output shaft of the large torque servo motor 6. The fixed gear 18 is tightly engaged with the arc-shaped rack 19 fixed to the outer wall of the open motor inner box 4 on the same side. When the output shaft of the large torque servo motor 6 rotates, it drives the fixed gear 18 to rotate together, drives the engaged arc-shaped rack 19 to swing up and down, and further drives the electric grinding main machine 13 in the open motor inner box 4 to rotate upward or downward along the inner box fixed rotating shaft 25.

[0063] The electric grinding main machine 13 and the grinding wheel 12 have two axial movements simultaneously during the grinding operation, that is, the forward and backward movement along the direction of the small guide rail 27, and at the same time, they always bear a constant pressure pointing to the rail web, and the up and down swinging movement with the inner box fixed rotating shaft 25 as the center and along the arc-shaped lever 21. Such a design enables the grinding surface of the grinding wheel 12 to always have a pressure perpendicular to the grinding surface downward during the grinding operation, and at the same time, the grinding position of the grinding wheel 12 can be manually controlled so that the upper, middle, and lower parts of the rail web can all be ground.

[0064] When the movable side top plate 2 is pressed down from the open state to a specific angle, the side top plate top clamp 29 will automatically snap into the top pressing and abutting edge 1-5 position of the inverted L-shaped main frame 1, so that the rail jaw clamping wheel 9 tightly presses against the lower surface of the rail jaw of the rail, and the grinding machine is fixed to the rail; when you want to loosen the grinding machine from the rail, just gently press the top clamp lever 30 to make the side top plate top clamp 29 disengage from the top pressing and abutting edge 1-5 position, and the movable side top plate 2 will automatically bounce up under the action of the spring torque and open the rail jaw clamping wheel 9.

[0065] The two ends of the unloading side pull handle 14 are loosely connected to the two shock absorbers 15, so that the handle 14-2 of the unloading side pull handle 14 can be lifted and pressed down at a certain angle. After pulling the unloading side pull handle 14 outwards and gently pressing it down, the handle hook piece 14-3 on the unloading side pull handle 14 can be hung on the outer side edge of the U-shaped side extension plate 1-2 of the inverted L-shaped main frame 1, so that the electric grinding main machine 13 cannot return to its original position, and the grinding wheel 12 is completely separated from the rail, which is convenient for the installation or disassembly of the equipment.

[0066] The handle push rod 3 has two designs. First, the handle push rod 3 is a vertical short rod with a height of 50 cm. This height facilitates the operator to sit and operate the grinding machine, and perform rail waist grinding for a long time in a sitting position. In the other design, the handle push rod 3 is an obliquely extended long rod installed at a 45-degree angle, with a length of 120 cm. This long rod design is for facilitating the operator to stand and operate the grinding machine.

[0067] On one side handle of the handle push rod 3, a start-stop switch 3-5, up and down buttons 3-6, and a speed control ring 3-7 are integrated, which are used to control the motor start and stop, the up and down swing of the grinding wheel 12, and the rotation speed of the grinding wheel 12 of the grinding machine. Such a design enables the operator to complete all the controls of the grinding machine with one hand during the grinding operation. The rubber guard plate 3-4 of the handle push rod 3 plays a role in protecting the control switches and buttons and preventing accidental touch.

[0068] The design of this patent is to solve the problem that on-site rail grinding on the line must be carried out manually. A single-sided rail waist grinding machine for rail waist grinding is designed. It adopts a balance fixing method of two-point support and locking the rail on one side and pressing down the center of gravity on the opposite side to fix the grinding machine on the rail; it adopts a series connection and tightening method of a pneumatic ejector rod 7 and a spring shock absorber 15, and at the same time cooperates with the design of a small guide rail to press the grinding wheel 12 tightly against the rail waist, so that even if the diameter of the grinding wheel 12 changes due to grinding consumption, the pressing force during the grinding process can still remain constant, and at the same time it can absorb the high-frequency vibration generated when the grinding wheel 12 bounces at high speed; it adopts the design of an arc-shaped curved bar 21 guide rail and an arc-shaped rack 19 to adapt to the arc of the rail waist itself, and controls the electric grinding main unit 13 to swing up and down around a fixed center of the circle, so that the grinding wheel 12 can reach any position of the rail waist and the grinding wheel 12 is always basically perpendicular to the grinding surface of the rail waist. This hand-pushed single-sided rail waist grinding machine is easy to install and disassemble, the grinding operation is simple and labor-saving, the control is convenient and safe, the overall equipment is light and easy to carry, and it is very suitable for on-site grinding construction of the rail waist.

[0069] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A hand-pushed single-sided rail web grinding machine, characterized in that: It includes an inverted L-shaped main frame, a movable side top plate, a handle push rod, an open motor inner box, a T-shaped vertical slide plate, a large torsion servo, a pneumatic ejector rod, a convex-edge track wheel, a rail jaw clamping wheel, an electric grinding main machine, a load-relieving side pull handle, a shock absorber, an L-shaped part, an output shaft stabilizing flange, a fixed gear, an arc-shaped rack, a curved lever fixing seat, an arc-shaped curved lever, a curved lever slider seat, a curved lever inner wheel, a fixed-axis bearing, an inner box fixed rotating shaft, an ejector rod support, a small guide rail, a small slider, and a side top plate top clamp; One side of the inverted L-shaped main frame is connected to the movable side top plate through a shaft. The inverted L-shaped main frame is connected to the convex-edge track wheel through two wheel shafts below this side. The rail jaw clamping wheel is installed on the clamping wheel shaft at the end of the movable side top plate. The movable side top plate is connected to the side top plate top clamp through a shaft. The push rod foot of the handle push rod is fixed to the upper surface of the upper table plate of the main frame of the inverted L-shaped main frame; Both sides of the U-shaped side extension plate on the other side of the inverted L-shaped main frame are fixedly connected to the two pneumatic ejector rods through ejector rod brackets. The end of the telescopic rod of the pneumatic ejector rod is connected to the shock absorber. Above the two shock absorbers, they are respectively connected to the two ends of the load-relieving side pull handle through fixing holes. Below the two shock absorbers, they are connected to the two T-shaped vertical slide plates on the left and right sides through the L-shaped parts. On both sides below the U-shaped side extension plate of the inverted L-shaped main frame, the small guide rails are respectively arranged and installed. The T-shaped vertical slide plate is fixed to the small slider through the small slider fixing hole. The two T-shaped vertical slide plates are slidably connected to the small guide rails on both sides through the small sliders; The inner side wall of the T-shaped vertical slide plate is connected to the arc-shaped curved lever through the curved lever fixing seat. The electric grinding main machine is fixed in the open motor inner box through the main motor fixing frame. The curved lever slider seat and the inner box fixed rotating shaft are symmetrically installed on the outer walls on both sides of the open motor inner box. The curved lever inner wheel fixedly arranged on the curved lever slider seat can be stuck to the arc-shaped curved lever on the same side and rollingly connected with it. The other end of the inner box fixed rotating shaft is rotationally connected to the T-shaped vertical slide plate on the same side through the fixed-axis bearing; One of the T-shaped vertical slide plates is fixedly connected to the large torsion servo through the servo fixing hole. The output shaft of the large torsion servo extends out from the servo output shaft hole on the T-shaped vertical slide plate, and its end is fixedly connected to the fixed gear through the pin hole. The middle section of the output shaft of the large torsion servo passes through the bearing in the output shaft stabilizing flange. The output shaft stabilizing flange is concentrically fixed with the servo output shaft hole. The arc-shaped rack is fixed to the outer wall of the open motor inner box on the same side. The output shaft of the large torsion servo drives the fixed gear to mesh with the arc-shaped rack for transmission, so that the open motor inner box rotates and swings upward or downward along the arc-shaped curved lever with the inner box fixed rotating shaft as the center; When the convex-edge track wheel is placed on the steel rail, the rail jaw clamping wheel can reach the rail jaw on one side of the steel rail. Under the thrust of the pneumatic ejector rod, the grinding wheel of the electric grinding main machine can be pushed against the rail waist on the other side of the steel rail. The electric grinding main machine can swing up and down around the inner box fixed rotating shaft, so that the grinding surface of the grinding wheel can be adjusted up and down to the required grinding position.

2. The hand-pushed single-sided rail web grinding machine according to claim 1, characterized in that: The output shaft of the electric grinding main machine points horizontally towards the surface of the rail web, and the power inside it is transmitted to the horizontally installed grinding wheel through bevel gears. During grinding, the outer circumferential surface of the grinding wheel rubs against the surface of the rail web.

3. A hand-pushed single-sided rail web grinding machine according to claim 2, characterized in that: The convex-edge track wheel installed below the inverted L-shaped main frame is placed on the rail head of the rail, playing a supporting role for the grinding machine. The rail jaw clamping wheel installed inside the movable side top plate is tightly pressed against the lower edge of the rail jaw during operation, playing a locking role for the rail. Since the center of gravity of the grinding machine is on the side of the U-shaped side extension plate of the inverted L-shaped main frame, the lateral self-weight of the grinding machine is converted into a locking force at the rail jaw clamping wheel through the support point at the rail head position, so that the grinding machine is automatically locked on the rail. At the same time, the grinding wheel is pressed against the rail web under the action of the pneumatic ejector rod.

4. The hand-pushed single-sided rail web grinding machine according to claim 3, characterized in that: The end of the telescopic rod of the pneumatic ejector rod is connected to the piston end of the shock absorber. The inside of the shock absorber is a spring, and the shock absorber housing is connected to the T-shaped vertical sliding plate. The pneumatic ejector rod and the shock absorber are connected in series and tightly. Any lateral displacement or high-speed bounce generated when the grinding wheel encounters an uneven surface will be transmitted to the T-shaped vertical sliding plate through the series connection and tight connection, and the T-shaped vertical sliding plate will slide back and forth along the small guide rail. The connected shock absorber and pneumatic ejector rod will also be stressed and telescoped together. The top force of the pneumatic ejector rod remains unchanged when it is compressed, and the vibration generated when the grinding wheel encounters an uneven surface is absorbed by the shock absorber.

5. The one-sided rail web grinding machine pushed by hand according to claim 1, wherein: The curved lever slider seat is fixed on the outer walls on both sides of the open motor inner box symmetrically. There are two rows of thin shafts protruding upwards on the curved lever slider seat, with 3 in one row and 2 in the other row, and they are arranged along a certain arc. The curved lever inner wheels are respectively installed on the thin shafts. The arc-shaped curved lever can pass through the space formed by these two rows of curved lever inner wheels and be clamped, so that the open motor inner box rotates and swings upwards or downwards along the arc-shaped curved lever with the inner box fixed rotating shaft as the center.

6. The push-type single-sided rail web grinding machine according to claim 5, wherein: The vertical distance between the axis of the inner box fixed rotating shaft and the axis of the grinding wheel is 17 cm. The change range of the radius of the grinding wheel during the grinding process is 2 - 6 cm. When the open motor inner box rotates and swings up and down with the inner box fixed rotating shaft as the center, the rotation radius range of the grinding wheel and the electric grinding main machine as a whole is 19 - 23 cm. The radius of curvature of the rail web cross-section is 20 cm, so that their radius dimensions are consistent, enabling the grinding wheel to be perpendicular to the local surface of the rail web when grinding different positions of the rail web.

7. The push-type single-sided rail web grinding machine according to claim 6, wherein: The large torsion servo motor is fixed on the outside of the left T-shaped vertical sliding plate. The end of the output shaft of the large torsion servo motor is fixed to the fixed gear. The middle section of the output shaft of the large torsion servo motor passes through the bearing inside the output shaft stabilizing flange. The fixed gear is tightly engaged with the arc-shaped rack fixed to the outer wall of the open motor inner box on the same side. When the output shaft of the large torsion servo motor rotates, it drives the fixed gear to rotate together, driving the engaged arc-shaped rack to swing up and down, and further driving the electric grinding main machine in the open motor inner box to rotate up or down along the inner box fixed rotating shaft.

8. A hand-pushed single-sided rail web grinding machine according to claim 7, characterized in that: The electric grinding main machine and the grinding wheel have two axial movements simultaneously during the grinding operation, namely, the forward and backward movement along the direction of the small guide rail and the up-and-down swinging movement with the fixed rotation shaft of the inner box as the center and along the arc-shaped lever.

9. A push-type single-sided rail web grinding machine according to claim 7, characterized in that: When the movable side top plate is pressed down from the open state to a specific angle, the side top plate stopper will automatically snap into the position of the top pressing edge of the inverted L-shaped main frame, so that the rail jaw clamping wheel tightly presses against the lower surface of the rail jaw of the rail.

10. A hand-pushed single-sided rail web grinding machine according to claim 7, characterized in that: The two ends of the unloading side pull handle are loosely connected to the two shock absorbers, so that the handle part of the unloading side pull handle can be lifted and pressed down at a certain angle. After pulling the unloading side pull handle outwards and gently pressing it down, the handle hook piece on the unloading side pull handle can be hung on the outer side edge of the U-shaped side extension plate of the inverted L-shaped main frame, so that the electric grinding main machine cannot return to its original position and the grinding wheel is completely separated from the rail.

11. A hand - pushed single - side rail web grinding machine according to claim 1, characterized in that: The handle push rod is a vertical short rod with a height of 50 cm, or the handle push rod is an obliquely extending long rod installed at a 45-degree angle with a length of 120 cm.

12. A hand - pushed single - side rail web grinding machine according to claim 11, characterized in that: An on-off switch, up-and-down buttons and a speed regulating ring are integrated on one side handle of the handle push rod, which are used to control the starting and stopping of the motor, the up-and-down swinging of the grinding wheel and the rotation speed of the grinding wheel of the grinding machine.

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