Railway rail grinding machine

Abstract

The utility model relates to a rail waist polisher, including motor, drive positioning frame and transmission positioning frame, the upper end of transmission positioning frame is connected through pivot and is connected polishing wheel, the radius R1 of polishing wheel is not greater than the arc radius of rail lower jaw, transmission positioning frame side end fixedly connected sleeve pipe, the lower extreme of drive positioning frame is equipped with the positioning ring, and the end of motor is equipped with the axle sleeve connecting seat, and the axle sleeve connecting seat is connected with the positioning ring and is positioned, and the output shaft of motor passes through the axle sleeve connecting seat and rotates with drive wheel synchronous, the axis of polishing wheel and drive wheel is parallel and is connected with annular polishing abrasive belt, and the upper side end of drive positioning frame is equipped with connecting rod, and connecting rod and sleeve pipe are inserted and are matched with each other. The rail waist polisher is high in polishing efficiency and good in polishing effect, not only saves skylight time, improves operation quality, but also avoids the security hidden danger of quality.

Description

Technical Field

[0001] This utility model relates to a rail web grinding machine, belonging to the technical field of small machinery for railway engineering construction. Background Technology

[0002] Currently, railway line maintenance frequently involves bonding insulating steel plates, freezing steel plates, and welding rails. All of these processes require rust removal and grinding of the rail web. However, there are currently no specialized tools for rail web grinding; angle grinders with grinding discs are generally used. Because the grinding discs cannot be in close contact with the rail web, grinding is done bit by bit using only the edges of the discs. Furthermore, grinding the area around the sleeper bolts is particularly difficult, as the bolts must be protected from damage. Grinding one side of the rail web within the length of a steel plate using an angle grinder with grinding discs typically takes 20-30 minutes, which is quite time-consuming. Given the limited track maintenance windows, excessive grinding time inevitably affects the bonding time of the steel plates. If the bonded steel plates do not meet the temperature and time requirements for operation, it will inevitably lead to railway safety hazards due to the poor quality of the bonded steel plates. Currently, the main problems with using angle grinders to grind bonded steel plates are as follows:

[0003] 1. Low sanding efficiency: It takes a long time to sand the skylight, and it generally takes 20-30 minutes for a single person to sand the length of the clamping plate on one side.

[0004] 2. Poor polishing effect: The polished surface is uneven and has a "fish scale" pattern, and the lower jaw of the rail head is easily not polished thoroughly.

[0005] 3. Inconvenient to operate: When using the side of the grinding disc or a small curved surface for grinding, the angle needs to be controlled when using a handheld angle grinder.

[0006] 4. Grinding at the vertical bolt is difficult and easily damages the vertical bolt: The vertical bolt is close to the rail web, and the distance is less than the diameter of the grinding disc, making grinding at this point difficult and easily damaging the vertical bolt.

[0007] 5. High labor intensity: Workers need to squat or sit while working, and prolonged grinding will inevitably increase the labor intensity of the workers.

[0008] 6. Poor adhesive bonding quality can easily lead to quality hazards: If the grinding quality is poor and the grinding operation takes too long, the adhesive clamps will not have enough time to solidify. If the line is opened in a hurry, the train will vibrate the unsolidified adhesive clamps when it passes over them, causing quality and safety hazards.

[0009] 7. Potential for personal injury and fire hazards: Fragmentation of angle grinder discs can cause eye damage or ignite nearby flammable materials, potentially leading to a fire. Summary of the Invention

[0010] The technical problem to be solved by this utility model is to provide a rail waist grinding machine that has high grinding efficiency and good grinding effect, which not only saves maintenance window time and improves work quality, but also avoids safety hazards caused by quality issues.

[0011] To solve the above problems, the specific technical solution of this utility model is as follows: A rail web grinding machine includes a motor, a drive positioning frame, and a transmission positioning frame; a grinding wheel is connected to the upper end of the transmission positioning frame via a rotating shaft, the radius R1 of the grinding wheel being no greater than the arc radius of the lower jaw of the rail; a sleeve is fixedly connected to the side end of the transmission positioning frame; a positioning ring is provided at the lower end of the drive positioning frame, and a bushing connecting seat is provided at the end of the motor, the bushing connecting seat being connected and positioned with the positioning ring, and the output shaft of the motor passing through the bushing connecting seat and rotating synchronously with the drive wheel; the axes of the grinding wheel and the drive wheel are parallel and are connected together by an annular grinding sand belt; a connecting rod is provided at the upper end of the drive positioning frame, and the connecting rod is inserted into the sleeve.

[0012] The connecting rod has a sliding groove in the middle, the top of the connecting rod is inserted into the sleeve, and a spring is provided in the inner cavity of the sleeve. The upper end of the spring is supported on the top surface of the sleeve, and the lower end is supported on the top surface of the connecting rod. A through hole is provided in the middle of the sleeve, and the connecting bolt passes through the through hole and the sliding groove in sequence to connect the connecting rod to the sleeve.

[0013] The abrasive belt is equipped with anti-detachment devices at both the top and bottom. The upper anti-detachment device is a horizontal anti-detachment wheel connected to the transmission positioning frame via a rotating shaft. The horizontal anti-detachment wheel is located below the abrasive wheel, and upper anti-detachment rims are provided on both sides of the horizontal anti-detachment wheel. The upper end of the abrasive belt is located between the two upper anti-detachment rims. The lower anti-detachment device is a lower anti-detachment rim provided on both sides of the drive wheel, and the lower end of the abrasive belt is located between the two lower anti-detachment rims. Alternatively, the anti-detachment device is an anti-detachment wheel symmetrically arranged at both ends of the front and rear surfaces of the transmission positioning frame and / or the drive positioning frame, with an anti-detachment cap with a diameter larger than the outer circumference of the anti-detachment wheel.

[0014] The transmission positioning frame is provided with handle connection holes on one or both sides, and the handle is connected and engaged with any one of the handle connection holes.

[0015] The grinding belt located on the drive wheel side has a U-shaped protective cover on its outer periphery. The bottom of the protective cover is connected and positioned to the positioning ring by several circumferentially distributed protective cover screws.

[0016] Protective adhesive tape is connected to the ends of the protective covers on both sides.

[0017] A limiting bolt is located directly below the positioning ring. The outer end of the limiting bolt is connected to a handle, and the inner end passes through the positioning ring and rests on the outer circumference of the bushing connecting seat.

[0018] The positioning ring has an opening, a sliding lower inclined surface on one side of the opening, a sliding upper inclined surface on the other side, and a sliding arc surface at the end. The adjusting and fastening bolt passes through the opening and is threaded to the positioning ring. After the adjusting and fastening bolt is tightened, the opening narrows and the sliding upper inclined surface moves along the sliding lower inclined surface.

[0019] The drive wheel has a raised arc-shaped structure with a central diameter larger than the diameters on both sides.

[0020] The drive positioning frame and the transmission positioning frame are connected on one side or symmetrically on both sides.

[0021] The rail web grinding machine of this application adopts the above structure and has the following advantages:

[0022] 1. High grinding efficiency: This rail web grinding machine uses a wider sanding belt, which can complete the full-section grinding from the lower jaw of the rail head to the rail web to the bottom of the rail in one go. The grinding width is the same as the width of the sanding belt. Grinding one side of the rail web within the length of the clamp plate only takes 2-3 minutes.

[0023] 2. Excellent grinding effect: This rail web grinding machine uses a flexible belt for grinding, which is in close horizontal contact with the rail head, rail web and rail bottom; the radius of the grinding wheel is not greater than the radius of the lower jaw arc of the rail head, and the lower jaw of the rail head is ground cleanly without any omissions.

[0024] 3. Lightweight and easy to use and carry. The motor and body of this machine are made of aluminum alloy and plastic, the frame is made of aluminum alloy, and the wheels are made of nylon. The whole machine is lightweight, and the operator can hold it with one hand or operate it with two hands, which is convenient and labor-saving.

[0025] 4. Adjustable angle: The drive positioning frame can be rotated to adjust the angle between the grinding wheel and the machine body, making grinding convenient.

[0026] 5. Simple operation: The grinding operation only requires the operator to make the grinding wheel horizontal and close to the grinding surface, and slide it up and down at the rail web and back and forth at the lower jaw and rail bottom to complete the grinding.

[0027] 6. Saves skylight maintenance time: Strip unit grinding has a large grinding area, and grinding a single steel rail can save 20 minutes of skylight maintenance time.

[0028] 7. Improve work quality and avoid safety hazards caused by quality issues. Because the grinding operation saves time during the skylight hours, the adhesive bonding of the splices can meet the temperature curing time requirements within the skylight hours before the line is opened. The adhesive bonding quality of the splices is good, and there are no quality and safety hazards after the line is opened.

[0029] 8. Reduced labor intensity: This rail web grinding machine is lightweight and the working time is greatly shortened, thereby greatly reducing the labor intensity of the operators.

[0030] 9. Minimal Personal Safety Risk: This rail web grinder uses a flexible belt, preventing splintering and injury. The machine is equipped with a safety guard and adhesive safety belt to prevent belt slippage and hand injuries. The belt rotates clockwise, and grinding debris is thrown downwards towards the ballast, posing no risk to workers' eyes.

[0031] 10. No damage to sleeper bolts: When grinding the sleeper bolts, the machine grinds the bottom of the rail vertically. Gradually adjust the angle of holding the machine to a horizontal to an upward tilt to grind the rail web and lower jaw without damaging the sleeper bolts.

[0032] 11. No fire hazard: Because the sanding belt rotates clockwise from top to bottom, the grinding debris splashes downwards towards the bottom of the rail and the ballast, eliminating the fire hazard.

[0033] 12. The handheld dual-column wide-band rail grinder has high power, wide sanding band, and fast grinding speed; the handheld single-column narrow-band rail grinder is lightweight, has an adjustable frame angle, and is easy to use. The dual-column wide-band rail grinder can be used for the first pass of large-area rapid grinding, while the single-column narrow-band rail grinder can be used for the second pass to refine details and to grind areas that were not thoroughly ground in the first pass of the dual-column wide-band rail grinder. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main structure of the single-column narrow-strip rail grinding machine in Embodiment 1.

[0035] Figure 2 This is a front view of the transmission positioning frame of the single-column narrow-strip rail grinding machine in Embodiment 1.

[0036] Figure 3 for Figure 2 AA sectional view.

[0037] Figure 4 This is a front view of the drive positioning frame of the single-column narrow-strip rail grinding machine in Embodiment 1.

[0038] Figure 5 This is a side view of the drive positioning frame of the single-column narrow-strip rail grinding machine in Embodiment 1.

[0039] Figure 6 This is a schematic diagram of the belt drive connection structure for grinding sanders.

[0040] Figure 7 This is a schematic diagram of the connection structure between the motor and the drive wheel.

[0041] Figure 8 This is a schematic diagram of the main structure of the dual-column wide-rail grinding machine in Example 2.

[0042] Figure 9 This is a front view of the transmission positioning frame of the double-column wide-rail grinding machine in Example 2.

[0043] Figure 10 This is a front view of the drive positioning frame of the double-column wide-rail grinding machine in Embodiment 2.

[0044] Figure 11 for Figure 10 AA sectional view.

[0045] Figure 12 for Figure 10 BB cross-sectional view.

[0046] Figure 13 This is a schematic diagram of the unit grinding operation area of ​​the grinding machine of this application.

[0047] Figure 14 This is a schematic diagram of the single-pass grinding direction of the grinding machine of this application. Detailed Implementation Example 1

[0048] A single-column narrow-strip rail grinding machine, such as Figures 1 to 5 As shown, it includes a motor 1, a drive positioning frame 14, and a transmission positioning frame 13; the drive positioning frame 14 and the transmission positioning frame 13 are connected on one side; a grinding wheel 8 is connected to the upper end of the transmission positioning frame 13 via a rotating shaft, and the radius R1 of the grinding wheel 8 is not greater than the arc radius of the lower jaw 33 of the rail; a sleeve 10 is fixedly connected to the side end of the transmission positioning frame 13; a positioning ring 20 is provided at the lower end of the drive positioning frame 14, and a bushing connecting seat 2 is provided at the end of the motor 1. The bushing connecting seat 2 is connected and positioned with the positioning ring 20, and the output shaft of the motor 1 passes through the bushing connecting seat 2 and rotates synchronously with the drive wheel 4; the axes of the grinding wheel 8 and the drive wheel 4 are parallel and are connected together to an annular grinding sand belt 9; as shown Figure 7 As shown, the wheel surface of the drive wheel 4 is a raised arc-shaped structure with a middle diameter larger than the diameters on both sides, which increases the tension in the middle part of the sanding belt 9, prevents the sanding belt 9 from shifting laterally on the drive wheel 4, and prevents the sanding belt from rubbing against the wheel rim 5 of the drive wheel 4; the upper end of the drive positioning frame 14 is provided with a connecting rod 19, which is rotatably inserted into the sleeve 10.

[0049] The connecting rod 19 has a sliding groove 31 in the middle. The top of the connecting rod 19 is inserted into the sleeve 10. A spring 16 is provided in the inner cavity of the sleeve 10. The upper end of the spring 16 is supported on the top surface of the sleeve 10, and the lower end is supported on the top surface of the connecting rod 19. A through hole is provided in the middle of the sleeve 10. The connecting bolt 15 passes through the through hole and the sliding groove 31 in sequence to connect the connecting rod 19 to the sleeve 10.

[0050] The abrasive belt 9 is equipped with anti-detachment devices at both the top and bottom; the upper anti-detachment device is a horizontal anti-detachment wheel 6 connected to the transmission positioning frame 13 via a rotating shaft, such as... Figure 6As shown; the horizontal anti-detachment wheel 6 is located below the grinding wheel 8, and upper anti-detachment rims 7 are respectively provided on both sides of the horizontal anti-detachment wheel 6, with the upper end of the grinding belt 9 located between the two upper anti-detachment rims 7; the lower anti-detachment device is that lower anti-detachment rims 5 are respectively provided on both sides of the drive wheel 4, with the lower end of the grinding belt 9 located between the two lower anti-detachment rims 5; or the anti-detachment device is that anti-detachment wheels 36 are symmetrically arranged at both ends of the front and rear surfaces of the transmission positioning frame 13 and / or the drive positioning frame 14, and the outer circumference of the anti-detachment wheel 36 is provided with an anti-detachment cap 37 larger than the diameter, such as Figure 1 and Figure 3 As shown, in this embodiment, the transmission positioning frame 13 is equipped with an anti-detachment wheel 36, and the drive wheel 4 is equipped with lower anti-detachment wheel rims 5 on both sides, so as to ensure that the sanding belt 9 does not come off during the sanding process.

[0051] The transmission positioning frame 13 is provided with handle connection holes 17 on one or both sides, and the handle 18 is connected and engaged with any one of the handle connection holes 17.

[0052] like Figure 4 As shown, a U-shaped protective cover 29 is provided on the outer periphery of the abrasive belt 9 located on the side of the drive wheel 4. The bottom of the protective cover 29 is connected and positioned to the positioning ring 20 by several circumferentially distributed protective cover screws 28. Protective adhesive tape 30 is connected to the ends of the protective covers 29 on both sides. On the one hand, the protective cover 29 effectively blocks iron filings from flying; on the other hand, the protective adhesive tape 30 can effectively connect and fix the two wings of the U-shaped protective cover 29, preventing the opening from being too large and affecting the grinding operation.

[0053] like Figure 5 As shown, a limiting bolt 27 is provided directly below the positioning ring 20. The outer end of the limiting bolt 27 is connected to a handle 18, and the inner end passes through the positioning ring 20 and rests against the outer circumference of the bushing connecting seat 2. The positioning ring 20 has an opening 21. One side of the positioning ring 20 located at the opening 21 has a sliding lower inclined surface 22, and the other side has a sliding upper inclined surface 23. The end is a sliding arc surface 24. The adjusting fastening bolt 25 passes through the opening 21 and is threadedly connected to the positioning ring 20. After the adjusting fastening bolt 25 is tightened, the opening 21 narrows and the sliding upper inclined surface 23 moves along the sliding lower inclined surface 22. When the limiting bolt 27 and the adjusting fastening bolt 25 are loosened, the bushing connecting seat 2 can rotate within the positioning ring 20 to adjust the grinding angle. After adjustment, the limiting bolt 27 and the adjusting fastening bolt 25 are tightened to ensure that the bushing connecting seat 2 can rotate relative to the positioning ring 20 without relative rotation. Example 2

[0054] A dual-column wide-rail grinding machine, such as Figures 8 to 12As shown, it includes a motor 1, a drive positioning frame 14, and a transmission positioning frame 13; the drive positioning frame 14 and the transmission positioning frame 13 are connected symmetrically on both sides. Because the symmetrical connection structure on both sides is more stable, a wider abrasive belt 9 can be used compared to Embodiment 1, thus resulting in higher work efficiency.

[0055] The connection structure between its drive positioning frame 14 and transmission positioning frame 13 is the same as that in Embodiment 1.

[0056] The difference is that in Embodiment 2, the bushing connecting seat 2 structure is cancelled, the transmission positioning frame 13 adopts an H-type structure, the transmission shaft of the motor 1 is seated on both sides of the drive positioning frame 14 through bearings, and the motor 1 is connected to one side of the drive positioning frame 14 by bolts. The drive wheel 4 is located at the lower part of the drive positioning frame 14, thereby ensuring the smoothness of transmission.

[0057] To ensure that the rail web grinding machine can be easily operated by hand, handles 18 are installed in at least two locations via handle connection holes 17.

[0058] like Figure 13 and Figure 14 As shown, during the grinding operation of the rail web grinding machine in the above two embodiments, the rail web grinding machine is kept horizontal, and the grinding wheel 8 is closely attached to the lower jaw 33, rail web 34, and rail bottom 35 of the rail. The angle is adjusted by the handle 18 so that the grinding roller 8 and the grinding belt 9 are seamlessly attached to the lower jaw 33, rail web 34, and rail bottom 35 of the rail. The grinding belt 9 is driven to rotate at high speed by the power of a small motor to grind away the rust and residual glue at the lower jaw 33, rail web 34, and rail bottom 35 of the rail.

[0059] When installing or replacing the sanding belt 9, open the protective adhesive tape 30, press the transmission positioning frame 13, the distance between the transmission positioning frame 13 and the drive positioning frame 14 becomes smaller, and install the sanding belt 9 into place from the outside of the transmission positioning frame 13 and the drive positioning frame 14.

Claims

1. A rail web grinding machine, characterized in that: It includes a motor (1), a drive positioning frame (14), and a transmission positioning frame (13); a grinding wheel (8) is connected to the upper end of the transmission positioning frame (13) via a rotating shaft, and the radius R1 of the grinding wheel (8) is not greater than the arc radius of the lower jaw (33) of the rail; a sleeve (10) is fixedly connected to the side end of the transmission positioning frame (13); a positioning ring (20) is provided at the lower end of the drive positioning frame (14), and a bushing connecting seat (2) is provided at the end of the motor (1). The bushing connecting seat (2) is connected and positioned with the positioning ring (20), and the output shaft of the motor (1) passes through the bushing connecting seat (2) and rotates synchronously with the drive wheel (4); the axes of the grinding wheel (8) and the drive wheel (4) are parallel and are connected together by an annular grinding sand belt (9); a connecting rod (19) is provided at the upper end of the drive positioning frame (14), and the connecting rod (19) is inserted and engaged with the sleeve (10).

2. The rail web grinding machine according to claim 1, characterized in that: The connecting rod (19) has a sliding groove (31) in the middle. The top of the connecting rod (19) is inserted into the sleeve (10). A spring (16) is provided in the inner cavity of the sleeve (10). The upper end of the spring (16) is supported on the top surface of the sleeve (10), and the lower end is supported on the top surface of the connecting rod (19). A through hole is provided in the middle of the sleeve (10). The connecting bolt (15) passes through the through hole and the sliding groove (31) in sequence to connect the connecting rod (19) with the sleeve (10).

3. The rail web grinding machine according to claim 1, characterized in that: The abrasive belt (9) is provided with anti-detachment devices at the top and bottom respectively; the upper anti-detachment device is a horizontal anti-detachment wheel (6) connected to the transmission positioning frame (13) by a rotating shaft. The horizontal anti-detachment wheel (6) is located below the abrasive wheel (8), and upper anti-detachment wheel rims (7) are provided on both sides of the horizontal anti-detachment wheel (6). The upper end of the abrasive belt (9) is located between the two upper anti-detachment wheel rims (7); the lower anti-detachment device is a lower anti-detachment wheel rim (5) provided on both sides of the drive wheel (4). The lower end of the abrasive belt (9) is located between the two lower anti-detachment wheel rims (5); or the anti-detachment device is an anti-detachment wheel (36) symmetrically provided at both ends of the front and rear surfaces of the transmission positioning frame (13) and / or the drive positioning frame (14). The outer circumference of the anti-detachment wheel (36) is provided with an anti-detachment cap (37) larger than the diameter.

4. The rail web grinding machine according to claim 1, characterized in that: The transmission positioning frame (13) is provided with handle connection holes (17) on one or both sides, and the handle (18) is connected and cooperated with any one of the handle connection holes (17).

5. The rail web grinding machine according to claim 1, characterized in that: A U-shaped protective cover (29) is provided on the outer periphery of the sanding belt (9) located on the side of the drive wheel (4). The bottom of the protective cover (29) is connected and positioned to the positioning ring (20) by several circumferentially distributed protective cover screws (28).

6. The rail web grinding machine according to claim 5, characterized in that: Protective adhesive tape (30) is connected to the ends of the protective covers (29) on both sides.

7. The rail web grinding machine according to claim 1, characterized in that: A limiting bolt (27) is provided directly below the positioning ring (20). The outer end of the limiting bolt (27) is connected to the handle (18), and the inner end passes through the positioning ring (20) and rests on the outer circumference of the bushing connecting seat (2).

8. The rail web grinding machine according to claim 1, characterized in that: The positioning ring (20) has an opening (21). The positioning ring (20) has a sliding lower inclined surface (22) on one side of the opening (21) and a sliding upper inclined surface (23) on the other side. The end is a sliding arc surface (24). The adjusting fastening bolt (25) passes through the opening (21) and is threaded to the positioning ring (20). After the adjusting fastening bolt (25) is tightened, the opening (21) shrinks and the sliding upper inclined surface (23) moves along the sliding lower inclined surface (22).

9. The rail web grinding machine according to claim 1, characterized in that: The surface of the drive wheel (4) is a raised arc-shaped structure with a central diameter larger than the diameters on both sides.

10. The rail web grinding machine according to claim 1, characterized in that: The drive positioning frame (14) and the transmission positioning frame (13) are connected on one side or symmetrically on both sides.

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