Grinding device and steel rail milling and grinding vehicle

Abstract

The embodiment of the invention provides a grinding device and a steel rail milling and grinding vehicle, the grinding device comprises a mounting frame, a rotating shaft assembly is arranged at the transverse center of the mounting frame, the two axial ends of the rotating shaft assembly are used for being fixed to a vehicle frame, and the mounting frame can rotate around the rotating shaft assembly; the two vertical moving frames are oppositely arranged along the two transverse ends of the mounting frame, and any vertical moving frame can reciprocate in the transverse direction relative to the mounting frame; a grinding wheel polishing device is arranged at the bottom of any vertical moving frame, and the grinding wheel polishing device can reciprocate in the vertical direction relative to the vertical moving frame; the profile angle detection and control device is connected with the mounting rack, the top of the profile angle detection and control device is connected with the frame, and the profile angle detection and control device can drive the mounting rack to rotate around the rotating shaft assembly. The profile angle detection and control device detects the vertical position of the device relative to the left steel rail and the right steel rail and drives the mounting frame to rotate around the rotating shaft assembly so as to adjust the grinding angle and position and ensure the accuracy of the grinding process.

Description

Technical Field

[0001] The present application relates to the technical field of rail maintenance equipment, and in particular to a grinding device and a rail milling and grinding vehicle. Background Art

[0002] Rail maintenance is a key component of rail maintenance, extending rail service life, effectively improving wheel-rail contact, and ensuring train safety. Existing rail maintenance machinery is primarily categorized as milling and grinding machines, rail milling machines, face grinding machines, rapid grinding machines, and circumferential tangent grinding machines. Milling and grinding machines employ milling and grinding, or milling and grinding with flap wheel polishing, while rail milling machines employ milling and fine milling, or milling and flap wheel polishing. Both types of machines perform rail profile shaping. Face grinding machines utilize grinding wheels for face grinding, using multiple grinding head angles to create different patterns to customize rail profiles. Circumferential tangent grinding machines utilize grinding wheels for circumferential tangent grinding. Like face grinding machines, they utilize multiple grinding head angles to create different patterns to customize rail profiles. Rapid grinding machines utilize passive grinding, offering limited rail profile customization capabilities but limited profile repair capabilities. Each type of machine has its own unique approach to rail corrugation improvement, but all meet the needs of rail maintenance. Milling and grinding machines and rail milling machines are used for severe defects, end face grinding machines and circumferential tangent grinding machines are used for moderate and mild defects, and fast grinding machines are used for mild defects and lines with better rail profiles. Summary of the Invention

[0003] The present application provides a grinding device and a rail milling vehicle to solve the problems of poor milling profile fitting and low rail maintenance accuracy of existing milling vehicles. A second object of the present application is to provide a rail milling vehicle including the above-mentioned grinding device.

[0004] In order to achieve the above objectives, this application provides the following technical solutions: A grinding device comprising: A mounting frame, wherein a rotating shaft assembly is provided at the transverse center thereof, wherein both axial ends of the rotating shaft assembly are used to be fixed to the vehicle frame, and the mounting frame is capable of rotating around the rotating shaft assembly; Two vertical moving frames are arranged opposite to each other along the lateral ends of the mounting frame, and any one of the vertical moving frames can reciprocate in the lateral direction relative to the mounting frame; a grinding wheel grinding device is provided below any one of the vertical moving frames, and the grinding wheel grinding device can reciprocate in the vertical direction relative to the vertical moving frame; The profile angle detection and control device is connected to the mounting frame and has its top connected to the vehicle frame. It is used to detect the vertical position of the device relative to the left and right rails and can drive the mounting frame to rotate around the rotating shaft assembly.

[0005] Optionally, it also includes: A transverse drive assembly, one end of which is connected to the vertical movement frame, and the other end of which is connected to the mounting frame; The transverse guide assembly is arranged laterally along the mounting frame, and the vertical frame is slidably connected to the transverse guide assembly and moves along the transverse guide assembly under the drive of the transverse drive assembly.

[0006] Optionally, it also includes: A vertical drive assembly, one end of which is connected to the vertical moving frame, and the other end of which is connected to the grinding wheel grinding device; The vertical guide assembly is arranged vertically along the vertical frame. The grinding wheel grinding device is slidably connected to the vertical guide assembly and moves along the vertical guide assembly under the drive of the vertical driving assembly.

[0007] Optionally, any of the vertical shift racks further comprises: A rail support assembly is located at the longitudinal front end of the vertical moving frame and is capable of reciprocating vertically on the vertical moving frame; The rail leaning assembly includes a bracket, and a rail top positioning wheel assembly and a rail side positioning assembly located on the bracket. The rail top positioning wheel assembly is used to position with the top surface of the rail, and the rail side positioning assembly is used to position with the side of the rail. The rail side positioning assembly can move vertically and laterally relative to the bracket.

[0008] Optionally, any of the rail-supporting components further comprises: A rail-supported vertical drive assembly, one end of which is connected to the vertical moving frame and the other end of which is connected to the bracket; The rail-supporting vertical movement guide assembly comprises a rail-supporting vertical guide column and a rail-supporting guide sleeve. The rail-supporting vertical guide column is arranged on the bracket, the rail-supporting guide sleeve is arranged on the vertical movement frame, and the rail-supporting guide sleeve is fitted on the rail-supporting vertical guide column.

[0009] Optionally, the profile angle detection and control device includes: A support, the upper part of which is connected to the frame; A servo drive assembly and a transmission assembly, wherein the bottom of the servo drive assembly is provided with a sensor for detecting the angle of the rail profile, and the top movable end is connected to the transmission assembly, the transmission assembly is connected to the bracket, and the transmission assembly is connected to the mounting frame. Driven by the servo drive assembly, the mounting frame is driven to rotate around the rotating shaft assembly.

[0010] Optionally, any of the vertical shift racks further comprises: The rail leaning assembly downward position detection assembly is located on the vertical shift frame and above the rail leaning assembly, and is used to detect the downward position of the rail leaning assembly.

[0011] Optionally, any of the vertical shift racks further comprises: A vertical position detection component is located on the vertical movement frame and is used to detect the vertical position of the grinding wheel grinding device.

[0012] Optionally, the grinding wheel grinding device includes: The box body comprises a grinding wheel drive assembly, a mounting bracket, a grinding wheel and a grinding wheel lower cover, wherein the grinding wheel drive assembly drives the grinding wheel to rotate to grind the rail; the grinding wheel lower cover is slidably connected to the box body; A mounting bracket is fixed to the box body and connected to the vertical drive assembly, and drives the box body to move vertically relative to the vertical moving frame through the vertical drive assembly; The grinding wheel lower cover mounting guide is located on the box body, the grinding wheel lower cover is connected to the grinding wheel lower cover mounting guide, and the grinding wheel lower cover is slidably connected to the box body through the grinding wheel lower mounting guide; the support plate is located on the rail assembly, and the top is used to support the grinding wheel lower cover.

[0013] The present application also provides a rail milling and grinding vehicle, comprising a vehicle body and a grinding device as described in any one of the above embodiments, wherein the grinding device is located on the vehicle body.

[0014] The grinding device provided in the embodiment of the present application includes: a mounting frame, a rotating shaft assembly is sleeved on the transverse center line of which, the axial ends of the rotating shaft assembly are used to be fixed to the frame, and the mounting frame can rotate around the rotating shaft assembly; two vertical moving frames are arranged opposite to each other along the transverse ends of the mounting frame, and any vertical moving frame can move back and forth laterally relative to the mounting frame; a grinding wheel grinding device is provided at the bottom of any vertical moving frame, and the grinding wheel grinding device can move back and forth vertically relative to the vertical moving frame; a profile angle detection and control device is connected to the mounting frame and the top is connected to the frame, for detecting the vertical position of the device relative to the left and right rails, and can drive the mounting frame to rotate around the rotating shaft assembly.

[0015] Compared with the prior art, the grinding device and rail milling machine provided in the embodiments of the present application have the following technical effects: In the present application, a rotating shaft assembly is provided at the transverse center of the mounting frame, and the axial ends of the rotating shaft assembly are fixed to the vehicle frame. The mounting frame can rotate around the rotating shaft assembly, and the vertical moving frame can move laterally on the mounting frame to adapt to rails of different widths, thereby improving the versatility of the device; at the same time, the grinding wheel grinding device can move back and forth vertically to adjust the grinding depth and angle to adapt to different grinding requirements; the profile angle detection and control device detects the current profile of the rail and drives the mounting frame to rotate around the rotating shaft assembly to adjust the grinding angle and position to ensure the accuracy of the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 A schematic diagram of the exploded structure of a grinding device provided in an embodiment of the present application; Figure 2 A schematic diagram of the main structure of a grinding device provided in an embodiment of the present application; Figure 3 A schematic diagram of the assembly structure of the profile angle detection and control device provided in an embodiment of the present application; Figure 4 A schematic structural diagram of a rail support assembly provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of the vertical shifting frame provided in an embodiment of the present application; Figure 6 A schematic structural diagram of a grinding wheel grinding device provided in an embodiment of the present application; Figure 7 for Figure 6 Schematic diagram of the rear view structure; Figure 8 This is a schematic diagram of the top view of the grinding wheel grinding device provided in an embodiment of the present application.

[0017] The following are marked in the accompanying drawings: Mounting frame 1, rotating shaft assembly 2, vertical shift frame 3, grinding wheel grinding device 4, profile angle detection and control device 5, lateral drive assembly 6, lateral guide assembly 7, vertical drive assembly 8, vertical guide assembly 9, rail support assembly 10, rail support assembly downward pressure position detection assembly 11, vertical position detection assembly 12, lateral position sensor 13; Bracket 101, rail top positioning wheel assembly 102, rail side positioning assembly 103, rail vertical drive assembly 104, rail vertical guide assembly 105, rail vertical guide column 1051, rail guide sleeve 1052; Box 41, grinding wheel drive assembly 42, grinding wheel 43, grinding wheel lower cover 44, mounting bracket 45, support plate 46, grinding wheel lower cover mounting guide 47; Support 51, servo drive assembly 52, transmission assembly 53; Vertical movement cylinder 81 and balancing cylinder 82. DETAILED DESCRIPTION

[0018] The embodiment of the present invention discloses a grinding device and a rail milling and grinding vehicle, which are used to solve the problems of poor profile fitting effect after milling and low rail maintenance accuracy of the existing milling and grinding vehicles.

[0019] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0020] See also Figure 1-8 , Figure 1 A schematic diagram of the exploded structure of a grinding device provided in an embodiment of the present application; Figure 2 A schematic diagram of the main structure of a grinding device provided in an embodiment of the present application; Figure 3 A schematic diagram of the assembly structure of the profile angle detection and control device provided in an embodiment of the present application; Figure 4 A schematic structural diagram of a rail support assembly provided in an embodiment of the present application; Figure 5 A schematic structural diagram of a vertical shift frame provided in an embodiment of the present application; Figure 6 A schematic structural diagram of a grinding wheel grinding device provided in an embodiment of the present application; Figure 7 for Figure 6 Schematic diagram of the rear view structure; Figure 8 This is a schematic diagram of the top view of the grinding wheel grinding device provided in an embodiment of the present application.

[0021] In a specific embodiment, the grinding device provided by the present application includes a mounting frame 1, a rotating shaft assembly 2 is sleeved on the transverse centerline of the mounting frame, and the axial ends of the rotating shaft assembly 2 are used to be fixed to the frame, and the mounting frame 1 can rotate around the rotating shaft assembly 2; Two vertical moving frames 3 are arranged opposite to each other along the lateral ends of the mounting frame 1, and each vertical moving frame 3 can reciprocate laterally relative to the mounting frame 1; a grinding wheel grinding device 4 is provided at the bottom of each vertical moving frame 3, and the grinding wheel grinding device 4 can reciprocate vertically relative to the vertical moving frame 3; The profile angle detection and control device 5 is connected to the mounting frame 1 and the top is connected to the vehicle frame. It is used to detect the vertical position of the device relative to the left and right rails and can drive the mounting frame 1 to rotate around the shaft assembly 2.

[0022] A rotating shaft assembly 2 is provided at the transverse center of the mounting frame 1. The rotating shaft assembly 2 includes two oppositely arranged rotating seats, each of which is provided with a joint bearing fixedly connected to the mounting frame 1. The top of the rotating seat is fixed to the vehicle frame. The two joint bearings are collinear and form the axis of rotation of the mounting frame 1. The mounting frame 1 is provided with a rectangular frame structure. Two vertical moving frames 3 are provided at the lateral ends of the mounting frame 1. The vertical moving frames 3 are used to carry the grinding wheel grinding device 4 and allow it to move back and forth in the transverse and vertical directions. Specifically, any vertical moving frame 3 can move back and forth in the transverse direction relative to the mounting frame 1 to accommodate rails of different widths. A grinding wheel grinding device 4 is provided below the vertical moving frame 3, which can move back and forth in the vertical direction relative to the vertical moving frame 3 to adjust the grinding depth and angle. The top of the profile angle detection and control device 5 is connected to the vehicle frame, and the bottom is provided with a device for detecting the profile angle of the rail, which is used to detect the vertical position of the device relative to the left and right rails. According to the detection results, the mounting frame 1 is driven to rotate around the rotating shaft assembly 2 to adjust the grinding angle and position to ensure the accuracy of the grinding process; so that the composition formed by the line connecting the cross section of the rail and the top surface of the rail is consistent with the composition formed by the line connecting the cross section of the rail and the top surface of the rail by the milling device, so as to ensure the accuracy and consistency of the milling and grinding operations and improve the quality and efficiency of rail repair. The profile angle detection and control device 5 may include an image sensor, an infrared sensor, an ultrasonic sensor or other types of sensors, as long as they can detect the distance between the top surface of the rail and the device.

[0023] In this embodiment, the profile angle detection and control device 5 includes: Support 51, used for fixing to the frame; The servo drive assembly 52 and the transmission assembly 53, the bottom of the servo drive assembly 52 is used to fit the rail, and the top movable end is connected to the transmission assembly 53, the transmission assembly 53 is connected to the bracket 101, and the transmission assembly 53 is connected to the mounting frame 1. Under the drive of the servo drive assembly 52, the mounting frame 1 is driven to rotate around the shaft assembly 2.

[0024] The support 51 is preferably located at the longitudinal front end of the mounting frame 1. It provides a mounting position for the transmission assembly 53. One end of the transmission assembly 53 is connected to the top of the servo drive assembly 52, and the other end is connected to the mounting frame 1. The bottom of the servo drive assembly 52 is designed to fit the rail profile. The servo drive assembly 52 is a high-precision motor drive system that provides precise position control and has a braking function, which can be applied promptly in the event of an abnormality, improving system safety. The transmission assembly 53 transmits the power of the servo drive assembly 52 to the mounting frame 1, driving it to rotate about the shaft assembly 2. One end of the transmission assembly 53 is connected to the top movable end of the servo drive assembly 52, and the other end is connected to the support 51 and the mounting frame 1. The servo drive assembly 52 can dynamically adjust according to the actual profile of the rail without manual intervention. Regardless of the degree of wear on the rail, the servo drive assembly 52 can adapt to different profile requirements by adjusting the angle of the mounting frame 1.

[0025] In an optional embodiment, the above-mentioned grinding device also includes a transverse driving assembly 6 and a transverse guiding assembly 7, one end of the transverse driving assembly 6 is connected to the vertical moving frame 3, and the other end is connected to the mounting frame 1; the transverse guiding assembly 7 is arranged along the transverse direction of the mounting frame 1, and the vertical moving frame 3 is slidably connected to the transverse guiding assembly 7, and moves along the transverse guiding assembly 7 under the drive of the transverse driving assembly 6.

[0026] The transverse drive assembly 6 is specifically one of a transverse cylinder, an oil cylinder or a hydraulic cylinder, preferably a transverse cylinder; the fixed end of the transverse drive assembly 6 is connected to one of the mounting frame 1 and the vertical frame 3, and the movable end of the transverse drive assembly 6 is connected to the other of the mounting frame 1 and the vertical frame 3, providing power for the lateral movement of the vertical frame 3 along the mounting frame 1. In other embodiments, the transverse drive assembly 6 can be set as a combination of a servo motor, a screw nut pair, and a gear rack pair. The transverse guide assembly 7 provides a stable sliding track for the vertical frame 3 to ensure that it remains stable during the transverse movement, and at the same time provides the necessary support for the vertical frame 3 to prevent it from shifting or shaking during the movement. In this embodiment, the transverse guide assembly 7 adopts a combination of two parallel guide rails and a transverse sliding sleeve. The guide rail is fixed on the mounting frame 1, the sliding sleeve is fixed on the vertical frame 3, and the sliding sleeve slides on the guide rail.

[0027] In another embodiment, the grinding device further comprises: A vertical drive assembly 8, one end of which is connected to the vertical moving frame 3, and the other end of which is connected to the grinding wheel grinding device 4; The vertical guide assembly 9 is arranged vertically along the vertical frame 3 , and the grinding wheel grinding device 4 is slidably connected to the vertical guide assembly 9 and moves along the vertical guide assembly 9 under the drive of the vertical drive assembly 8 .

[0028] The vertical drive assembly 8 can be one of an air cylinder, an oil cylinder or a hydraulic cylinder, preferably an air cylinder; the fixed end of the vertical drive assembly 8 is connected to one of the vertical frame 3 and the grinding wheel grinding device 4, and the movable end of the vertical drive assembly 8 is connected to the other of the vertical frame 3 and the grinding wheel grinding device 4, providing power for the vertical movement of the grinding wheel grinding device 4; in other embodiments, the vertical drive assembly 8 can also be configured as a combination of a servo motor and a kinematic pair. The vertical guide assembly provides a stable sliding track for the grinding wheel grinding device 4 to ensure that it remains stable during vertical movement, while providing necessary support for the grinding wheel grinding device 4. The vertical guide assembly 9 includes two parallel vertical guide rails and a vertical sliding sleeve. The guide rails extend vertically on the grinding wheel grinding device 4. The vertical guide rails are arranged on the grinding wheel grinding device 4. The vertical sliding sleeve is fixed on the vertical frame 3, and the vertical sliding sleeve slides on the vertical guide rails.

[0029] Optionally, any vertical shifting frame 3 further includes: The rail assembly 10 is located at the longitudinal front end of the vertical moving frame 3 and is capable of vertically reciprocating movement on the vertical moving frame 3; The rail support assembly 10 includes a bracket 101, and a rail top positioning wheel assembly 102 and a rail side positioning assembly 103 located on the bracket 101. The rail top positioning wheel assembly 102 is used to position with the top surface of the rail, and the rail side positioning assembly 103 is used to position with the side of the rail. The rail side positioning assembly 103 can move vertically and laterally relative to the bracket 101.

[0030] The rail rest assembly 10 ensures the grinding device is precisely positioned on the rail, preventing deviation during the grinding process. It also allows for vertical and lateral adjustment to accommodate rails of varying shapes and sizes. The rail top positioning wheel assembly 102 is used to contact and position the rail top surface, ensuring the vertical stability of the grinding device. Made of wear-resistant material, the rail top positioning wheel assembly 102 maintains constant pressure against the rail top surface through a spring-loaded mechanism, ensuring stable contact on rails of varying degrees of wear.

[0031] The rail side positioning assembly 103 is used to contact and position the rail side, and can be fine-tuned vertically and laterally based on the actual shape and size of the rail. The rail side positioning assembly 103 uses an adjustable rail-resting mechanism to closely contact the rail side. The rail-resting mechanism is mounted on a sliding guide rail, allowing for vertical and lateral adjustment.

[0032] Wherein, any rail support assembly 10 further includes: A vertical drive assembly 104 is connected to the vertical moving frame 3 at one end and to the bracket 101 at the other end; The rail vertical guide assembly 105 includes a rail vertical guide column 1051 and a rail guide sleeve 1052. The rail vertical guide column 1051 is arranged on the bracket 101, and the rail guide sleeve 1052 is arranged on the vertical movement frame 3. The rail vertical guide sleeve is assembled with the rail vertical guide column 1051.

[0033] The fixed end of the rail-supporting vertical drive assembly 104 is connected to the vertical moving frame 3, and the movable end is connected to the bracket 101. The rail-supporting vertical drive assembly 104 can be set as one of an air cylinder, an oil cylinder or a hydraulic cylinder, preferably an air cylinder; the rail-supporting vertical drive assembly 104 provides power for the vertical movement of the rail-supporting assembly 10. In other embodiments, the rail-supporting vertical drive assembly 104 can also be set as a combination of a servo motor and a kinematic pair. The rail-supporting vertical drive assembly 104 provides a stable sliding rail for the rail-supporting assembly 10 to ensure that it remains stable during the vertical movement, while providing necessary support for the rail-supporting assembly 10. The rail-supporting vertical movement guide assembly 105 includes two parallel rail-supporting vertical guide rails and a rail-supporting vertical sliding sleeve. The rail-supporting vertical guide rail extends vertically on the bracket 101, the rail-supporting guide sleeve 1052 is fixed on the vertical moving frame 3, and the vertical sliding sleeve slides on the vertical guide rail.

[0034] Wherein, any vertical shifting frame 3 further includes: The rail leaning assembly downward position detection assembly 11 is located on the vertical shift frame 3 and above the rail leaning assembly 10 , and is used to detect the downward position of the rail leaning assembly 10 .

[0035] The rail leaning assembly downward position detection assembly 11 monitors the position changes of the rail leaning assembly 10 in the vertical direction in real time to ensure that it always maintains correct contact with the rail; the rail leaning assembly downward position detection assembly 11 can be set as a sensor, such as a displacement sensor, a laser ranging sensor, etc., specifically a wire sensor, to detect the downward position or downward distance of the rail leaning assembly 10. When a position deviation occurs, the position of the rail leaning assembly 10 is fine-tuned through the control system.

[0036] On the other hand, any vertical shifting frame 3 further includes: The vertical position detection component 12 is located on the vertical frame 3 and is used to detect the vertical position of the grinding wheel grinding device 4.

[0037] The vertical displacement of the grinding wheel grinding device 4 is measured by the vertical position detection component 12, such as a laser distance sensor, a proximity sensor, etc., to ensure that the grinding wheel grinding device 4 can always be in close contact with the rail and remain stable.

[0038] In another embodiment, the grinding wheel grinding device 4 includes: The box body 41 has a grinding wheel drive assembly 42, a grinding wheel 43 and a grinding wheel lower cover 44. The grinding wheel drive assembly 42 drives the grinding wheel 43 to rotate and grind the rail; the grinding wheel lower cover 44 is slidably connected to the box body 41; The mounting bracket 45 is fixed on the vertical shifting frame 3; The vertical drive assembly 8 is located between the box body 41 and the mounting bracket 45 . The vertical drive assembly 8 is used to drive the box body 41 to move vertically relative to the mounting bracket 45 .

[0039] The box body 41 is provided with a grinding wheel drive assembly 42, a grinding wheel 43 and a grinding wheel lower cover 44; the grinding wheel drive assembly 42 includes a spindle system, a motor and a belt. The output end of the motor is connected to the spindle system through a belt. The spindle system is fixed to the grinding wheel 43 and rotates at high speed driven by the motor. The box body 41 is fixed on the vertical moving frame 3 through the mounting bracket 45. A vertical drive assembly 8 is set between the box body 41 and the mounting bracket 45 to drive the box body 41 to move vertically relative to the mounting bracket 45. The vertical drive assembly 8 includes a balancing cylinder 82 and a vertical moving cylinder 81. The two cylinders are connected in parallel and are used to balance the weight of the grinding wheel grinding device 4 and perform downward pressure grinding; the pressure of the balancing cylinder 82 is adjusted by a pressure reducing valve, and the vertical moving cylinder 81 is controlled by a proportional pressure reducing valve. By adjusting the proportional pressure reducing valve, the grinding wheel 43 can obtain different downward pressures to form different grinding depths, which is reflected in the grinding power. The grinding of the grinding wheel 43 is pressure controlled. The control program controls the grinding work of the grinding wheel 43 by comparing and adjusting the feedback of the motor controller and the proportional pressure reducing valve with the set value. The specific control program is a mature existing technology and will not be repeated here. In one embodiment, the balancing cylinder 82 and the vertical moving cylinder 81 are the same, one pair of corners is the balancing cylinder 82, and the other pair of corners is the vertical moving cylinder 81. To improve grinding control accuracy and shorten response time, the grinding wheel grinding device 4 should be minimally sized. The balancing cylinder 82 and the vertical shift cylinder 81 can have different configurations, but they share the same minimum mounting distance and travel distance. One corner pair is the balancing cylinder 82. The piston rod ends of the balancing cylinder 82 and the vertical shift cylinder 81 are connected to the mounting bracket 45, while the barrel ends of the balancing cylinder 82 and the vertical shift cylinder 81 are connected to the vertical shift frame 3.

[0040] Furthermore, the grinding wheel grinding device 4 also includes: The lower grinding wheel cover installation guide 47 is located on the box body 41. The lower grinding wheel cover 44 is connected to the lower grinding wheel cover installation guide 47. The lower grinding wheel cover 44 is slidably connected to the box body 41 via the lower grinding wheel cover installation guide 43. The support plate 46 is located on the rail assembly 10 , and the top is used to support the grinding wheel lower cover 44 .

[0041] The grinding wheel lower cover mounting guide 47 is located on the back of the box body 41, and the grinding wheel lower cover 44 is slidably connected to the grinding wheel lower cover mounting guide 47. The grinding wheel lower cover mounting guide 47 includes a guide rail. The grinding wheel lower cover 44 can be provided with a slide groove that cooperates with the guide rail. The guide rail can slide in the slide groove. The grinding wheel lower cover 44 is seated on the support plate 46 by gravity. While preventing the grinding wheel 43 from splashing, it does not directly contact the rail assembly 10. The support plate 46 is specifically located on the bracket 101 of the rail assembly 10. According to actual needs, the height of the grinding wheel lower cover 44 is manually or electrically adjusted to ensure that it always covers the bottom of the grinding wheel 43 to prevent debris generated during the grinding process from splashing.

[0042] Optionally, the entire device forms a right-angled trapezoid or rectangular composition with the line connecting the top surface of the rail on the cross section of the rail; the grinding device is adjusted according to the composition formed by the line connecting the milling device on the cross section of the rail and the top surface of the rail, so that the composition formed by the line connecting the milling and grinding devices and the top surface of the rail is consistent.

[0043] Preferably, the line connecting the milling device and the top surface of the rail on the cross section forms a rectangular shape, and the line connecting the grinding device and the top surface of the rail on the cross section forms a rectangular shape.

[0044] The values of the rail-supporting mechanism downward pressure position sensors on both sides are used to detect and determine whether the composition formed by the line connecting the entire device on the rail cross section and the rail top surface is a right-angled trapezoid or a rectangle.

[0045] In another embodiment, a transverse position sensor 13 is provided on the mounting frame 1 to detect the lateral position of the grinding wheel grinding device 4; a vertical position sensor is used to detect the vertical position of the grinding wheel grinding device 4. The size of the grinding wheel 43 can be calculated by comparing the detection values of the vertical position sensor with the detection values of the rail-supporting mechanism's downward pressure position sensor. The transverse position sensor 13, the vertical position sensor, and the rail-supporting mechanism's downward pressure position sensor use wire sensors, while the on-track sensor uses an eddy current type. Furthermore, the grinding device also includes a rotational safety locking device for the mounting frame 1, a transverse safety locking device for the vertical frame 3, a safety locking device for the grinding wheel grinding device 4, and a safety locking device for the rail-supporting mechanism to ensure safe transportation.

[0046] Compared with the existing circumferential tangential grinding device, the above-mentioned grinding device can better fit the milled profile, improve the residual wave grinding after milling, and the grinding light band position is correct, which can effectively improve the wheel-rail contact relationship and effectively improve the accuracy and efficiency of rail maintenance operations.

[0047] Based on the above-mentioned grinding device, the present application also provides a rail milling and grinding vehicle, which includes a vehicle body and the grinding device described in any one of the above-mentioned embodiments, and the grinding device is located on the vehicle body.

[0048] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0049] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A grinding device, characterized in that: include: A mounting frame, wherein a rotating shaft assembly is provided at the transverse center thereof, wherein both axial ends of the rotating shaft assembly are used to be fixed to the vehicle frame, and the mounting frame is capable of rotating around the rotating shaft assembly; Two vertical moving frames are arranged opposite to each other along the lateral ends of the mounting frame, and any one of the vertical moving frames can reciprocate in the lateral direction relative to the mounting frame; a grinding wheel grinding device is provided below any one of the vertical moving frames, and the grinding wheel grinding device can reciprocate in the vertical direction relative to the vertical moving frame; The profile angle detection and control device is connected to the mounting frame and has its top connected to the vehicle frame. It is used to detect the vertical position of the device relative to the left and right rails and can drive the mounting frame to rotate around the rotating shaft assembly.

2. The grinding device according to claim 1, characterized in that Also includes: A transverse drive assembly, one end of which is connected to the vertical movement frame, and the other end of which is connected to the mounting frame; The transverse guide assembly is arranged laterally along the mounting frame, and the vertical frame is slidably connected to the transverse guide assembly and moves along the transverse guide assembly under the drive of the transverse drive assembly.

3. The grinding device according to claim 2, characterized in that Also includes: A vertical drive assembly, one end of which is connected to the vertical moving frame, and the other end of which is connected to the grinding wheel grinding device; The vertical guide assembly is arranged vertically along the vertical frame. The grinding wheel grinding device is slidably connected to the vertical guide assembly and moves along the vertical guide assembly under the drive of the vertical driving assembly.

4. The grinding device according to claim 3, characterized in that Any of the vertical shifting frames further comprises: A rail support assembly is located at the longitudinal front end of the vertical moving frame and is capable of reciprocating vertically on the vertical moving frame; The rail leaning assembly includes a bracket, and a rail top positioning wheel assembly and a rail side positioning assembly located on the bracket. The rail top positioning wheel assembly is used to position with the top surface of the rail, and the rail side positioning assembly is used to position with the side of the rail. The rail side positioning assembly can move vertically and laterally relative to the bracket.

5. The grinding device according to claim 4, characterized in that Any of the rail-supporting components further comprises: A rail-supported vertical drive assembly, one end of which is connected to the vertical moving frame and the other end of which is connected to the bracket; The rail-supporting vertical movement guide assembly comprises a rail-supporting vertical guide column and a rail-supporting guide sleeve. The rail-supporting vertical guide column is arranged on the bracket, the rail-supporting guide sleeve is arranged on the vertical movement frame, and the rail-supporting guide sleeve is fitted on the rail-supporting vertical guide column.

6. The grinding device according to claim 1, characterized in that The profile angle detection and control device comprises: A support, the upper part of which is connected to the frame; A servo drive assembly and a transmission assembly, wherein the bottom of the servo drive assembly is provided with a sensor for detecting the angle of the rail profile, and the top movable end is connected to the transmission assembly, the transmission assembly is connected to the bracket, and the transmission assembly is connected to the mounting frame. Driven by the servo drive assembly, the mounting frame is driven to rotate around the rotating shaft assembly.

7. The grinding device according to claim 4, characterized in that Any of the vertical shifting frames further comprises: The rail leaning assembly downward position detection assembly is located on the vertical shift frame and above the rail leaning assembly, and is used to detect the downward position of the rail leaning assembly.

8. The grinding device according to claim 7, characterized in that Any of the vertical shifting frames further comprises: A vertical position detection component is located on the vertical movement frame and is used to detect the vertical position of the grinding wheel grinding device.

9. The grinding device according to claim 4, characterized in that The grinding wheel grinding device comprises: The box body comprises a grinding wheel drive assembly, a mounting bracket, a grinding wheel and a grinding wheel lower cover, wherein the grinding wheel drive assembly drives the grinding wheel to rotate to grind the rail; the grinding wheel lower cover is slidably connected to the box body; A mounting bracket is fixed to the box body and connected to the vertical drive assembly, and drives the box body to move vertically relative to the vertical moving frame through the vertical drive assembly; The grinding wheel lower cover mounting guide is located on the box body, the grinding wheel lower cover is connected to the grinding wheel lower cover mounting guide, and the grinding wheel lower cover is slidably connected to the box body through the grinding wheel lower cover mounting guide; the support plate is located on the rail assembly, and the top is used to support the grinding wheel lower cover.

10. A rail milling vehicle, characterized in that: It comprises a vehicle body and the grinding device according to any one of claims 1 to 9, wherein the grinding device is located on the vehicle body.

Images