A grinding device for grooved rails

Abstract

The present invention discloses a grinding device for grooved rails, which relates to the field of rail maintenance and includes a vehicle frame, a lateral positioning device, a driving device, a grinding device, and a lifting device. The lateral positioning devices are installed on both sides of the vehicle frame, and the driving device is used to drive the lateral positioning device to work. The lateral positioning device is driven by the driving device to work, and the middle part of the grooved rail is clamped between two positioning wheels, so that the lateral rapid positioning of the grinding head can be achieved. The grinding head that fits the rail groove and the grinding disc that fits the top surface of the rail can move along the rail under the constraint of the lateral positioning device, and the weld overlay layer can be quickly ground, so that the weld overlay layer and the rail groove can have a smooth transition; the lifting grinding head can divide the weld overlay layer area into several depths for gradual in-depth grinding, and the lifting part adopts a screw rod with a driving shaft and a sleeve for use. Compared with lifting the entire grinding device as a whole, the power consumed is less, which is suitable for endurance grinding in remote sections.

Description

Technical Field

[0001] The invention belongs to the field of track maintenance, and in particular relates to a grinding device for grooved rails. Background Art

[0002] The grooves of grooved rails can protect wheels and prevent vehicles from derailing. Traditional turnouts are equipped with guardrails to prevent wheels from hitting the tip of the center rail in the harmful space of the fork center. To allow vehicles to pass safely, most of them are milled and added to the base rail. The distance between the guardrail and the working edge is smaller than the groove, and the guardrails have smooth transition surfaces at both ends. This reduces the width of the base rail groove and can prevent vehicles from derailing. However, this process is complex to process, and is not conducive to later maintenance after installation, and is inconvenient to disassemble and assemble.

[0003] Now a technology to replace the guardrail has been developed. After using welding surfacing technology, surfacing can be performed on the inner side of the rail lip. The surfacing layer can reduce the width of the rail groove so that the rail groove width can meet the requirements when the vehicle passes the switch, thus playing the role of rail guard. In daily line operation, rail wear is inevitable and needs timely maintenance. When it is found that the groove width cannot play a protective role, this technology can be used for surfacing and then polishing to meet daily use.

[0004] Because the weld overlay layer is located in the rail groove, there is currently no suitable grinding device for this structure. This part can only be polished manually or with a small handheld grinder. Manual grinding is inefficient. Even with a small grinder, it still requires considerable manpower and is easily affected by human factors, which can affect the grinding effect and quality. Summary of the Invention

[0005] The present invention discloses a grinding device for grooved rails, so as to solve the problems mentioned in the above background technology.

[0006] A grinding device for grooved rails, comprising a frame, a lateral positioning device, a driving device, a grinding device and a lifting device.

[0007] Lateral positioning devices are installed on both sides of the frame. The lateral positioning devices are used to clamp the middle part of the grooved rail and slide on the side walls of the middle part of the grooved rail to achieve lateral positioning of the grinding device. The driving device is used to drive the lateral positioning device to work. The grinding device is used to grind the top surface of the grooved rail and its rail groove. The lifting device is used to drive the grinding device to rise and fall, thereby performing distributed grinding on the surfacing layer in the rail groove.

[0008] Preferably, two running wheels are rotatably connected to the front and rear sides of the bottom of the frame, and a top plate is provided on the top of the frame, and a handle is fixedly connected to the top plate.

[0009] Preferably, the lateral positioning device includes: a fixed plate, a wheel frame, a screw rod and a synchronous wheel. The fixed plate is fixedly connected to the side wall of the vehicle frame, the outer wall of the wheel frame is fixedly connected to a support rod, the outer end of the support rod passes through the fixed plate and is slidably connected to the fixed plate, the outer end of the support rod is also provided with a stop block, one end of the screw rod is fixedly connected to the wheel frame, and the other end thereof passes through the fixed plate and is threadedly connected to the synchronous wheel. The synchronous wheel is rotatably connected to the fixed plate, and the inner wall of the wheel frame is rotatably connected to two positioning wheels.

[0010] Preferably, the rotation directions of the screws 1 in the two lateral positioning devices are opposite.

[0011] Preferably, the driving device includes a driving motor and a rotating shaft. The driving motor is fixedly connected to the frame, and its output shaft is fixedly connected to a driving gear. The rotating shaft is provided with a driven gear meshing with the driving gear. The rotating shaft is rotatably connected to the frame. Synchronous wheels 2 are provided at both ends of the rotating shaft. The synchronous wheel 2 on the same side is connected to the synchronous wheel 1 through a synchronous belt.

[0012] Preferably, the grinding device includes a drive shaft, a sleeve and a grinding motor, the top of the drive shaft is fixedly connected to a grinding disc, the bottom of the grinding disc is provided with a grinding head, the drive shaft is provided with a spline, the sleeve is rotatably connected to the frame, and a spline groove for the spline to slide is provided at the center, a pulley is provided on the top of the sleeve, the grinding motor is fixedly connected to the frame, and its output shaft is also provided with a pulley, and the two pulleys are connected by a belt.

[0013] Preferably, the grinding head is a rotating body, and its cross section fits the rail groove, and a diamond powder layer is attached to the outer surface of the grinding head.

[0014] Preferably, the lifting device includes a lifting motor and a screw rod 2, the lifting motor is fixedly connected to the frame, the output shaft of the lifting motor is fixedly connected to a synchronous wheel 3, the screw rod 2 is threadedly connected to the top plate, and a synchronous wheel 4 is provided at the bottom thereof, the synchronous wheel 4 is rotatably connected to the drive shaft, and the synchronous wheel 3 and the synchronous wheel 4 are connected by a synchronous belt.

[0015] The advantages of the present invention are:

[0016] The lateral positioning device is driven by a driving device, and the middle part of the grooved rail is clamped between two positioning wheels, which can realize the lateral rapid positioning of the grinding head, avoiding the grinding deviation caused by the hand-held grinder and the damage to the original rail groove;

[0017] The grinding head that fits the rail groove and the grinding disc that fits the top surface of the rail can move along the rail under the constraint of the lateral positioning device to grind the cladding layer, which can achieve rapid grinding of the cladding layer, so that the cladding layer and the rail groove can have a smooth transition;

[0018] The liftable grinding head can divide the weld overlay area into several depths for gradual in-depth grinding, avoiding the situation where the weld overlay is too large and the grinding resistance is too high. The lifting part uses a screw rod in conjunction with a drive shaft and a sleeve. Compared with lifting the entire grinding device as a whole, it consumes less electricity, is suitable for endurance grinding in remote sections, and can also greatly reduce the size and weight of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the present invention when it works

[0020] Figure 2 for Figure 1 Front view after hiding the handle;

[0021] Figure 3 Schematic diagram of the structures at the bottom of the frame;

[0022] Figure 4 Schematic diagram of the internal structures of the frame;

[0023] Figure 5 This is a partial structural diagram of the grinding device.

[0024] In the figure: 1, frame; 11, running wheels; 12, top plate; 13, handle;

[0025] 2. Lateral positioning device; 21. Fixing plate; 22. Wheel frame; 23. Screw rod 1; 24. Synchronous wheel 1; 25. Support rod; 26. Stop block; 27. Positioning wheel;

[0026] 3. Driving device; 31. Driving motor; 32. Rotating shaft; 33. Driving gear; 34. Driven gear; 35. Synchronous gear 2;

[0027] 4. Grinding device; 41. Drive shaft; 42. Sleeve; 421. Spline groove; 43. Grinding motor; 44. Grinding disc; 45. Grinding head; 46. Pulley;

[0028] 5. Lifting device; 51. Lifting motor; 52. Screw rod 2; 53. Synchronous wheel 3; 54. Synchronous wheel 4; 6. Grooved rail. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1 to 5 As shown, a grinding device 4 for a grooved rail 6 includes a frame 1, a lateral positioning device 2, a driving device 3, a grinding device 4 and a lifting device 5.

[0031] A lateral positioning device 2 is installed on both sides of the frame 1. The lateral positioning device 2 is used to clamp the middle part of the grooved rail 6 and slide on the side wall of the middle part of the grooved rail 6 to achieve lateral positioning of the grinding device 4. The driving device 3 is used to drive the lateral positioning device 2 to work. The grinding device 4 is used to grind the top surface of the grooved rail 6 and its rail groove. The lifting device 5 is used to drive the grinding device 4 to rise and fall, thereby performing distributed grinding on the surfacing layer in the rail groove.

[0032] In this embodiment, two running wheels 11 are rotatably connected to the front and rear sides of the bottom of the frame 1 , and a top plate 12 is provided on the top of the frame 1 , to which a handle 13 is fixedly connected.

[0033] In this embodiment, the lateral positioning device 2 comprises a fixed plate 21, a wheel frame 22, a screw rod 23, and a synchronous wheel 24. The fixed plate 21 is fixedly connected to the side wall of the vehicle frame 1. A support rod 25 is fixedly connected to the outer wall of the wheel frame 22. The outer end of the support rod 25 passes through the fixed plate 21 and is slidably connected to the fixed plate 21. The outer end of the support rod 25 is also provided with a stopper 26. One end of the screw rod 23 is fixedly connected to the wheel frame 22, and the other end passes through the fixed plate 21 and is threadedly connected to the synchronous wheel 24. The screw rods 23 in the two lateral positioning devices 2 rotate in opposite directions. When the synchronous wheel 24 rotates, the two screw rods 23 can be moved inward. The synchronous wheel 24 is rotatably connected to the fixed plate 21. Two positioning wheels 27 are rotatably connected to the inner wall of the wheel frame 22.

[0034] In this embodiment, the driving device 3 includes a driving motor 31 and a rotating shaft 32. The driving motor 31 is fixedly connected to the frame 1, and its output shaft is fixedly connected to a driving gear 33. The rotating shaft 32 is provided with a driven gear 34 that meshes with the driving gear 33. The rotating shaft 32 is rotatably connected to the frame 1. Both ends of the rotating shaft 32 are provided with a synchronous wheel 2 35. The synchronous wheel 2 35 on the same side is connected to the synchronous wheel 1 24 through a synchronous belt.

[0035] In this embodiment, the grinding device 4 includes a drive shaft 41, a sleeve 42 and a grinding motor 43. The top of the drive shaft 41 is fixedly connected to a grinding disc 44, and the bottom of the grinding disc 44 is provided with a grinding head 45. The drive shaft 41 is provided with a spline. The sleeve 42 is rotatably connected to the frame 1, and a spline groove 421 for the spline to slide is provided at the center. The sleeve 42 rotates, and since the sleeve 42 and the drive shaft 41 are matched with the spline and the spline groove 421, the drive shaft 41 will also rotate. A pulley 46 is provided at the top of the sleeve 42, and the grinding motor 43 is fixedly connected to the frame 1, and its output shaft is also provided with a pulley 46. The two pulleys 46 are connected by a belt.

[0036] In this embodiment, the grinding head 45 is a rotating body, and its cross section fits the rail groove.

[0037] In this embodiment, the lifting device 5 includes a lifting motor 51 and a screw rod 2 52. The lifting motor 51 is fixedly connected to the frame 1. The output shaft of the lifting motor 51 is fixedly connected to a synchronous wheel 3 53. The screw rod 2 52 is threadedly connected to the top plate 12, and a synchronous wheel 4 54 is provided at the bottom thereof. When the screw rod 2 52 rotates forward, the screw rod 2 52 itself moves downward, and vice versa. The synchronous wheel 4 54 is rotationally connected to the drive shaft 41, and the synchronous wheel 3 53 and the synchronous wheel 4 54 are connected through a synchronous belt.

[0038] Working process and principle:

[0039] Initially, the grinding head 45 is located at the highest position, and the two positioning frames are in a state of being separated. At this time, the spacing between the positioning wheels 27 on different sides is large, and the track can be placed in the middle position.

[0040] The vehicle frame 1 is placed on the track so that the traveling wheel 11 contacts the track, and then the driving motor 31 is turned on. The driving motor 31 starts to drive the driven gear 34 through the driving gear 33, so that the rotating shaft 32 rotates, and the rotating shaft 32 drives the two synchronous wheels 35 to rotate, and the synchronous wheel 2 35 drives the synchronous wheel 1 24 to rotate on the fixed plate 21.

[0041] Because synchronous wheel 1 24 is threadedly connected to screw 1 23 , and the two screws 1 23 rotate in opposite directions, when synchronous wheel 1 24 rotates, it can cause the two screws 1 23 to move inward, thereby moving the two wheel frames 22 closer to the side walls of the middle of the track. The center of the track is clamped by positioning wheel 27, and the drive motor 31 is turned off after clamping. Support rod 25 is used to ensure that the wheel frames 22 can slide smoothly.

[0042] When the two positioning wheels 27 clamp the middle of the track, the grinding head 45 is now facing the track groove, and then the grinding motor 43 can be started. The grinding motor 43 transmits power to the sleeve 42 through two pulleys 46, and the sleeve 42 rotates. Since the sleeve 42 and the drive shaft 41 are matched with the spline and the spline groove 421, the drive shaft 41 will also rotate.

[0043] The second screw 52 remains stationary when the lifting motor 51 is turned off, so the drive shaft 41 can be maintained at a certain height.

[0044] As the lifting motor 51 starts, the synchronous wheel 3 53 drives the synchronous wheel 4 54 to rotate forward, and the synchronous wheel 4 54 drives the screw 2 52 to rotate. Since the screw 2 52 is threadedly connected to the top plate 12, when the screw 2 52 rotates forward, the screw 2 52 itself will move downward, thereby driving the drive rod to move downward in the sleeve.

[0045] Since the weld buildup layer is thick and deep, the driving rod can be moved down to a certain depth first, and the weld buildup layer of the depth can be preliminarily polished. While polishing, the handle 13 is used to push the vehicle body forward. The positioning wheel 27 and the walking wheel 11 can ensure that the vehicle body can move normally. After polishing, the lifting device 5 is used to make the driving shaft 41 continue to descend to a depth and polish again, so that the weld buildup layer can be polished several times, reducing the resistance and difficulty during polishing.

[0046] The grinding disc 44 can grind the weld overlay overflowing from the top surface of the rail.

[0047] After the grinding is completed, the grinding motor 43 is reversed and started, so that the drive shaft 41 rises, driving the grinding head 45 and the grinding disc 44 to reset, and then the drive motor 31 is started again to reverse, so that the two screws 23 are mutually displaced, and the wheel frame 22 is away from the track, and then the car body can be removed from the track.

[0048] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A grinding device for grooved rails, characterized by: The invention comprises a vehicle frame (1), a lateral positioning device (2), a driving device (3), a grinding device (4) and a lifting device (5), wherein the lateral positioning device (2) is installed on both sides of the vehicle frame (1), the lateral positioning device (2) is used to clamp the middle part of the groove rail (6) and slide on the side wall of the middle part of the groove rail (6) to realize the lateral positioning of the grinding device (4), the driving device (3) is used to drive the lateral positioning device (2) to work, the grinding device (4) is used to grind the top surface of the groove rail (6) and its rail groove, and the lifting device (5) is used to drive the grinding device (4) to move up and down, thereby performing distributed grinding on the surfacing layer in the rail groove; The grinding device (4) includes a driving shaft (41), a sleeve (42) and a grinding motor (43), the top of the driving shaft (41) is fixedly connected to a grinding disc (44), the bottom of the grinding disc (44) is provided with a grinding head (45), the driving shaft (41) is provided with a spline, the sleeve (42) is rotatably connected to the vehicle frame (1), and a spline groove (421) for the spline to slide is provided at the center thereof, a pulley (46) is provided at the top of the sleeve (42), the grinding motor (43) is fixedly connected to the vehicle frame (1), and its output shaft is also provided with a pulley (46), and the two pulleys (46) are connected by a belt; The lifting device (5) includes a lifting motor (51) and a second screw (52), wherein the lifting motor (51) is fixedly connected to the vehicle frame (1), and the output shaft of the lifting motor (51) is fixedly connected to a third synchronous wheel (53), the second screw (52) is threadedly connected to the top plate (12), and a fourth synchronous wheel (54) is provided at the bottom thereof, the fourth synchronous wheel (54) is rotationally connected to the drive shaft (41), and the third synchronous wheel (53) and the fourth synchronous wheel (54) are connected via a synchronous belt.

2. A grinding device for grooved rails according to claim 1, characterized in that: Two running wheels (11) are rotatably connected to the front and rear sides of the bottom of the vehicle frame (1). A top plate (12) is provided on the top of the vehicle frame (1), and a handle (13) is fixedly connected to the top plate (12).

3. The grinding device for grooved rails according to claim 1, characterized in that: The lateral positioning device (2) comprises: a fixed plate (21), a wheel frame (22), a screw rod (23) and a synchronous wheel (24), wherein the fixed plate (21) is fixedly connected to the side wall of the vehicle frame (1), and the outer wall of the wheel frame (22) is fixedly connected to a support rod (25), the outer end of the support rod (25) passes through the fixed plate (21) and is slidably connected to the fixed plate (21), and the outer end of the support rod (25) is also provided with a stopper (26), one end of the screw rod (23) is fixedly connected to the wheel frame (22), and the other end thereof passes through the fixed plate (21) and is threadedly connected to the synchronous wheel (24), the synchronous wheel (24) is rotatably connected to the fixed plate (21), and the inner wall of the wheel frame (22) is rotatably connected to two positioning wheels (27).

4. The grinding device for grooved rails according to claim 3, characterized in that: The rotation directions of the screw 1 (23) in the two lateral positioning devices (2) are opposite.

5. The grinding device for grooved rails according to claim 1, characterized in that: The driving device (3) includes a driving motor (31) and a rotating shaft (32). The driving motor (31) is fixedly connected to the vehicle frame (1), and its output shaft is fixedly connected to a driving gear (33). The rotating shaft (32) is provided with a driven gear (34) meshing with the driving gear (33). The rotating shaft (32) is rotatably connected to the vehicle frame (1). Both ends of the rotating shaft (32) are provided with a second synchronous wheel (35). The second synchronous wheel (35) on the same side is connected to the first synchronous wheel (24) through a synchronous belt.

6. The grinding device for grooved rails according to claim 1, characterized in that: The grinding head (45) is a rotating body, and its cross section fits the rail groove.

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