Switch roller device and switch machine

Abstract

The utility model provides a turnout roller device and a turnout switch, and relates to the technical field of railways. The turnout roller device comprises a first frame, a second frame and a roller body; the roller body comprises a roller shaft and a rolling body; the roller shaft comprises a shaft middle part and two shaft end parts; the axis of the roller shaft is collinear with the axis of the rolling body, and the axis of the roller shaft is the axis of the shaft middle part; the rolling body is sleeved on the shaft middle part and is configured to be able to rotate around the shaft middle part; the first frame and the second frame are connected in cooperation and form a shaft cooperation hole accommodating at least part of the shaft end parts; the cross section of the shaft end parts is a regular polygon, and the regular polygon is a central symmetric figure; and the shape of the shaft cooperation hole is adapted to the shape of the shaft end parts. The turnout switch comprises the turnout roller device. The utility model provides a turnout roller device and a turnout switch, so as to solve the technical problem of the complicated roller height adjustment process and the low adjustment efficiency of the fixed structure turnout roller device in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of railway technology, and more specifically, to a turnout roller device and a turnout switch. Background Technology

[0002] A turnout roller assembly is a component used for railway turnouts. The roller assembly for passenger dedicated lines (CDLs) is specifically designed for CDLs. For example... Figure 1 The schematic diagram of the turnout roller device shows that a roller slide plate 3 is fixedly installed below the main rail 5. The turnout roller device 1 is mounted on the roller slide plate 3, and is located between the switch rail 2 and the roller slide plate 3. Specifically, the roller slide plate 3 has mounting threaded holes 4. Bolts 6 pass through the turnout roller device 1 and are screwed into the mounting threaded holes 4 to fix the turnout roller device 1 to the roller slide plate 3. The top of the turnout roller device 1 supports the bottom of the switch rail 2. The main function of the turnout roller device 1 is to ensure the smooth movement of the switch rail 2 during switch switching and reduce the friction of the moving switch rail 2. To meet the operating requirements of high-speed trains, the turnout roller device 1 is required to have high load-bearing capacity and good wear resistance. The turnout roller device 1 is usually made of high-strength alloy material and its dimensional accuracy and surface finish are ensured through precision machining processes.

[0003] In practical applications, turnout roller assemblies require regular maintenance and inspection to ensure stable performance. Maintenance work mainly includes cleaning and wear inspection. Cleaning aims to remove dirt and impurities from the roller surface to prevent them from affecting the normal operation of the switch. Wear inspection aims to promptly identify and replace worn components to avoid affecting the safe operation of high-speed trains due to component damage.

[0004] Traditional turnout roller devices typically employ a fixed structure. The roller height is adjusted by replacing roller height adjustment plates of different specifications to adapt to different operating conditions. However, adjusting the roller height requires the preparation of roller height adjustment plates of appropriate height and the disassembly of the entire turnout roller device to replace the roller height adjustment plates. This adjustment process is cumbersome and inefficient. Utility Model Content

[0005] The purpose of this utility model is to provide a turnout roller device and a turnout switch, so as to solve to a certain extent the technical problems of cumbersome roller height adjustment process and low adjustment efficiency of the fixed structure turnout roller device in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A turnout roller device includes a first frame, a second frame, and a roller body;

[0008] The roller body includes a roller shaft and rolling elements; the roller shaft includes a central section and two end sections, and the central section is connected between the two end sections along the axial direction of the roller shaft; the axis of the roller shaft is collinear with the axis of the rolling elements, and the axis of the roller shaft is the axis of the central section.

[0009] The rolling element is fitted over the middle portion of the shaft and is configured to rotate about the middle portion of the shaft;

[0010] The first frame and the second frame are connected to each other and form a shaft mating hole to accommodate at least a portion of the shaft end and a receiving cavity to accommodate the rolling element;

[0011] The cross-section of the shaft end is a regular polygon, and the regular polygon is a centrally symmetric figure. The shape of the shaft mating hole is adapted to the shape of the shaft end.

[0012] The distances between the axis of the shaft end and each side of the regular polygon are not the same, or the distances between the axis of the shaft end and each side of the regular polygon are partially different.

[0013] In one possible implementation, the cross-section of the shaft end is square; the distance between the axis of the shaft end and the four sides of the square is not the same.

[0014] In one possible implementation, the first frame includes a corresponding first top surface and a first bottom surface, and the second frame includes a corresponding second top surface and a second bottom surface;

[0015] The shaft mating hole includes a first shaft hole area and a second shaft hole area;

[0016] The first shaft hole area is disposed on the first bottom surface of the first frame, and the second shaft hole area is disposed on the second top surface of the second frame;

[0017] Along the radial direction of the roller body, the sum of the depth of the first shaft hole region and the depth of the second shaft hole region is not greater than the height of the shaft end.

[0018] In one possible implementation, the first top surface includes a protrusion corresponding to the first shaft hole area, and the surface of the rolling element opposite to the second bottom surface protrudes from the protrusion.

[0019] In one possible implementation, the roller body further includes a sealing skeleton and a seal;

[0020] The roller shaft also includes a shaft sealing mating part; the shaft sealing mating part is connected between the middle part of the shaft and the end part of the shaft, and the outer diameter of the shaft sealing mating part is smaller than the outer diameter of the middle part of the shaft, and the shaft sealing mating part is collinear with the axis of the middle part of the shaft;

[0021] The sealing skeleton is sleeved on the shaft sealing mating part, and the sealing skeleton is interference-fitted with the shaft sealing mating part; the sealing skeleton is located inside the receiving cavity, and there are gaps between the first frame and the second frame and the sealing skeleton;

[0022] The outer peripheral surface of the sealing skeleton is provided with a skeleton groove, which is located at one end of the sealing skeleton near the middle of the shaft; the seal is accommodated in the skeleton groove, and the end of the seal is in sealing contact with the end of the rolling element; the seal is configured not to rotate with the rotation of the rolling element.

[0023] The outer diameter of the sealing skeleton is smaller than the outer diameter of the rolling element.

[0024] In one possible implementation, the roller body further includes a bushing; the bushing is connected between the middle of the shaft and the rolling element; the bushing has stronger wear resistance than the rolling element; the rolling element and the bushing are interference-fitted.

[0025] In one possible implementation, the number of roller bodies is one or two along an axial direction perpendicular to the roller shaft.

[0026] In one possible implementation, along the axial direction perpendicular to the roller shaft, the receiving cavity is provided with receiving cavity openings at the ends of the first frame and the second frame, and the turnout roller device is provided with two shaft mating holes.

[0027] The height of the shaft mating hole near the opening of the receiving cavity is higher than the height of the shaft mating hole away from the opening of the receiving cavity; wherein, the height of the shaft mating hole refers to the distance between the shaft mating hole and the surface of the second frame opposite to the first frame.

[0028] In one possible implementation, both the first frame and the second frame are provided with mounting holes, through which fasteners pass and can be screwed onto fastening nuts.

[0029] The cross-section of the mounting hole is oblong.

[0030] A turnout switch includes a plurality of the above-described turnout roller devices;

[0031] At least a portion of the turnout roller assembly includes one roller body, and at least a portion of the turnout roller assembly includes two roller bodies.

[0032] The main beneficial effects of this utility model by adopting the above technical solution are as follows:

[0033] The turnout roller device and turnout switch provided by this utility model include a first frame, a second frame, and a roller body. The roller body includes a roller shaft and rolling elements. The roller shaft includes a central shaft and two end shafts. The distances between the axis of the end shaft and each side of the regular polygon are different, or the distances between the axis of the end shaft and each side of the regular polygon are partially different. The height of the axis of the roller shaft can be adjusted by rotating the end shaft, thereby adjusting the height of the rolling elements wrapped around the central shaft. Since the cross-section of the end shaft is a regular polygon and the regular polygon is a centrally symmetrical figure, the rotation angle of the end shaft can be easily adjusted to make the rolling elements reach a preset height. This allows for rapid adjustment of the height of the rolling elements, eliminating the need for the roller height adjustment plate to be fitted with the appropriate height in the prior art. It also effectively avoids the need to disassemble the entire turnout roller device to install the roller height adjustment plate of the appropriate height in the prior art, effectively improving the efficiency of rolling element height adjustment.

[0034] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram illustrating the application of existing turnout roller devices;

[0037] Figure 2 A schematic diagram of the structure of the turnout roller device (double rollers) provided in an embodiment of this utility model.

[0038] Figure 3 for Figure 2 The front view of the turnout roller assembly shown;

[0039] Figure 4 for Figure 3 The diagram shows a bottom view of the turnout roller assembly.

[0040] Figure 5 Another structural schematic diagram (single roller) of the turnout roller device provided in an embodiment of the present utility model.

[0041] Figure 6 This is a schematic diagram of the structure of the roller body provided in an embodiment of the present utility model;

[0042] Figure 7 This is a cross-sectional view of the roller body provided in an embodiment of the present utility model;

[0043] Figure 8 This is a schematic diagram of the structure of the roller provided in an embodiment of the present utility model;

[0044] Figure 9 for Figure 8 The front view of the roller shown;

[0045] Figure 10 for Figure 9 Left view of the roller shown;

[0046] Figure 11 A schematic diagram of the structure of the first frame provided in an embodiment of this utility model;

[0047] Figure 12 A schematic diagram of the structure of the second frame provided in an embodiment of this utility model.

[0048] Icons: 1-Turnout roller assembly; 2-Switch rail; 3-Roller slide plate; 4-Mounting threaded hole; 5-Basic rail; 6-Bolt;

[0049] 100-First frame; 110-Receiving cavity; 111-Receiving cavity opening; 120-Shaft mating hole; 121-First shaft hole area; 122-Second shaft hole area; 130-Protrusion; 140-Mounting hole; 150-Fastener; 200-Second frame; 300-Roller body; 310-Roller shaft; 311-Shaft middle part; 312-Shaft end; 313-Shaft sealing mating part; 320-Rolling element; 330-Sealing skeleton; 340-Seal; 350-Bushing; 400-Fasting nut. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0057] Example

[0058] This embodiment provides a turnout roller device and a turnout switch; please refer to... Figures 2-12 , Figure 2 and Figure 5 These are schematic diagrams of two structures of the turnout roller device provided in this embodiment, wherein... Figure 2 A turnout roller assembly with double rollers is shown. Figure 5 A turnout roller assembly with a single roller is shown; Figure 3 for Figure 2 The front view of the turnout roller assembly shown. Figure 4 for Figure 3 The diagram shows a bottom view of the turnout roller assembly; for a clearer view of the structure, Figure 6 This is a three-dimensional view of the roller body. Figure 7 This is a cross-sectional view of the roller body. Figure 8 This is a 3D view of the roller. Figure 9 for Figure 8 The front view of the roller shown is shown. Figure 10 for Figure 9 The left view of the roller shown. Figure 11 This is a three-dimensional view of the first frame. Figure 12 This is a three-dimensional view of the second frame.

[0059] The turnout roller device provided in this embodiment achieves rapid adjustment of the axis height of the roller body 300 by rotating the roller shaft 310, thereby adapting to different operating conditions. This eliminates the step of configuring roller height adjustment plates of corresponding heights based on survey results for different operating conditions, as is done in existing technologies. It also eliminates the need to disassemble the entire turnout roller device during roller height adjustment and maintenance, as is required in existing technologies. This turnout roller device belongs to the category of passenger dedicated line turnout roller devices and is applicable to various high-speed railway turnout systems, especially in situations with high requirements for operating speed and safety.

[0060] See Figures 2-12 As shown, the turnout roller device includes a first frame 100, a second frame 200, and a roller body 300.

[0061] The roller body 300 includes a roller shaft 310 and rolling elements 320; the roller shaft 310 includes a central shaft portion 311 and two shaft ends 312, and the central shaft portion 311 is connected between the two shaft ends 312 along the axial direction of the roller shaft 310; the axis of the roller shaft 310 is collinear with the axis of the rolling elements 320, and the axis of the roller shaft 310 is the axis of the central shaft portion 311.

[0062] The rolling element 320 is sleeved on the middle portion 311 of the shaft, and the rolling element 320 is configured to rotate about the middle portion 311 of the shaft.

[0063] The first frame 100 is connected to the second frame 200 and forms a shaft mating hole 120 for accommodating at least a portion of the shaft end 312, and a receiving cavity 110 for accommodating the rolling element 320.

[0064] The cross-section of the shaft end 312 is a regular polygon, and the regular polygon is a centrally symmetric figure. The shape of the shaft mating hole 120 is adapted to the shape of the shaft end 312. Optionally, the regular polygon is, for example, a square, a regular hexagon, a regular octagon, etc. In some embodiments, the shaft end 312 is a regular polygonal prism, which may be cut from a circular prism.

[0065] In some embodiments, the distances between the axis of the shaft end 312 and each side of the regular polygon are not the same, that is, the distances between the axis of the shaft end 312 and each side of the shaft end 312 are not the same. Alternatively, the distances between the axis of the shaft end 312 and each side of the regular polygon are partially different, that is, the distances between the axis of the shaft end 312 and each side of the shaft end 312 are partially different.

[0066] In this embodiment, the shaft end 312 is configured to rotate so that the shaft end 312 engages with the shaft mating hole 120, so that the roller shaft 310 rotates synchronously with the shaft end 312, thereby adjusting the height of the axis of the roller shaft 310, and further adjusting the height of the rolling element 320. In this embodiment, the first frame 100 is, for example, located above the second frame 200.

[0067] The turnout roller device described in this embodiment includes a first frame 100, a second frame 200, and a roller body 300. The roller body 300 includes a roller shaft 310 and rolling elements 320. The roller shaft 310 includes a central shaft portion 311 and two end shaft portions 312. The distances between the axis of the end shaft portion 312 and each side of the regular polygon are not the same, or the distances between the axis of the end shaft portion 312 and each side of the regular polygon are partially different. The height of the axis of the roller shaft 310 can be adjusted by rotating the end shaft portions 312, thereby adjusting the position of the outer sleeve on the central shaft portion. The height of the rolling element 320 on 311; the cross-section of the shaft end 312 is a regular polygon, and the regular polygon is a centrally symmetrical figure, which makes it easy to adjust the rotation angle of the shaft end 312 so that the rolling element 320 reaches the preset height. This can realize the rapid adjustment of the height of the rolling element 320, which can eliminate the step of configuring the roller height adjustment plate with a suitable height in the prior art. It can effectively avoid the need to disassemble the entire turnout roller device to install the roller height adjustment plate with a suitable height in the prior art, and effectively improve the efficiency of the height adjustment of the rolling element 320.

[0068] See Figures 2-10 As shown, in some embodiments, the cross-section of the shaft end 312 is square; the distance between the axis of the shaft end 312 and the four sides of the square is not the same, that is, the distance between the axis of the shaft end 312 and the four sides of the shaft end 312 is not the same. With this design, it is easy to adjust the rotation angle of the shaft end 312 so that the rolling element 320 reaches the preset height, and the height of the rolling element 320 can be quickly adjusted.

[0069] Optionally, the roller 310 may be made of stainless steel or other materials, such as 95Cr18 martensitic stainless steel or other stainless steel materials with better performance.

[0070] Optionally, the roller 310 has center holes on both end faces, and the two end faces 312 are machined with four planes, each plane being at a different distance L from the center of the center hole. The distance from the center of the center hole to the plane is also the distance from the plane to the axis of the roller 310. For example, when the cross-section of the end face 312 is square, the four planes of the end face 312 are sequentially connected as a first plane, a second plane, a third plane, and a fourth plane. The first plane is opposite to the third plane, and the second plane is opposite to the fourth plane. The distance from the first plane to the axis of the roller 310 is L1, the distance from the second plane to the axis of the roller 310 is L2, the distance from the third plane to the axis of the roller 310 is L3, and the distance from the fourth plane to the axis of the roller 310 is L4. Then L1 + L3 = L2 + L4; for example, L1 = 5.5mm, L2 = 7mm, L3 = 10mm, and L4 = 8.5mm. Figure 9 As shown.

[0071] See Figures 2-5 , Figure 11 and Figure 12 As shown, in some embodiments, the first frame 100 includes a corresponding first top surface and a first bottom surface, and the second frame 200 includes a corresponding second top surface and a second bottom surface. The first bottom surface of the first frame 100 mates with the second top surface of the second frame 200 to form a shaft mating hole 120 to accommodate at least a portion of the shaft end 312. The second bottom surface of the second frame 200 rests on the roller slide plate of the turnout switch.

[0072] The shaft mating hole 120 includes a first shaft hole area 121 and a second shaft hole area 122.

[0073] The first shaft hole area 121 is provided on the first bottom surface of the first frame 100, and the second shaft hole area 122 is provided on the second top surface of the second frame 200.

[0074] Along the radial direction of the roller body 300, the sum of the depth of the first shaft hole area 121 and the depth of the second shaft hole area 122 is not greater than the height of the shaft end 312, so as to securely clamp the shaft end 312.

[0075] Optionally, the first top surface includes a protrusion 130 corresponding to the first shaft hole area 121, and the surface of the rolling element 320 facing away from the second bottom surface protrudes from the protrusion 130. After optimizing the structure of the first frame 100, the protrusion 130 is formed at the position corresponding to the first shaft hole area 121, so as to reduce the mass of the first frame 100 to a certain extent, thereby reducing the production cost of the turnout roller device to a certain extent.

[0076] See Figures 6-10 As shown, in some embodiments, the roller body 300 further includes a sealing frame 330 and a seal 340.

[0077] The roller 310 also includes a shaft sealing mating part 313; the shaft sealing mating part 313 connects the middle part 311 of the shaft and the end part 312 of the shaft, and the outer diameter of the shaft sealing mating part 313 is smaller than the outer diameter of the middle part 311 of the shaft, and the axis of the shaft sealing mating part 313 and the axis of the middle part 311 of the shaft are collinear; that is, the roller 310 is stepped, and a step is formed at the junction of the shaft sealing mating part 313 and the middle part 311 of the shaft. Optionally, the cross-sectional area of ​​the shaft sealing mating part 313 is larger than the cross-sectional area of ​​the end part 312 of the shaft.

[0078] Optionally, the sealing skeleton 330 is fitted over the shaft sealing mating part 313, and the sealing skeleton 330 and the shaft sealing mating part 313 are interference-fitted to securely fit the sealing skeleton 330 onto the shaft sealing mating part 313; the sealing skeleton 330 is located inside the receiving cavity 110, and there is a gap between the first frame 100 and the second frame 200 and the sealing skeleton 330; the gap between the first frame 100 and the second frame 200 and the sealing skeleton 330 prevents the first frame 100 and the second frame 200 from interfering with the rotation of the rolling element 320.

[0079] Optionally, the outer peripheral surface of the sealing skeleton 330 is provided with a skeleton groove, which is located at one end of the sealing skeleton 330 near the middle part 311 of the shaft; the seal 340 is accommodated in the skeleton groove, and the end of the seal 340 is in sealing contact with the end of the rolling element 320; the seal 340 is configured not to rotate with the rotation of the rolling element 320; optionally, the seal 340 is interference-fitted with the sealing skeleton 330 to securely install the seal 340 on the sealing skeleton 330.

[0080] Optionally, the outer diameter of the sealing skeleton 330 is smaller than the outer diameter of the rolling element 320.

[0081] Alternatively, the sealing skeleton 330 may be made of plastic, stainless steel, or alloy. For example, the sealing skeleton 330 may be made of glass fiber reinforced polyamide 66.

[0082] See Figure 7 As shown, in some embodiments, the roller body 300 further includes a bushing 350; the bushing 350 is connected between the shaft center 311 and the rolling element 320; the wear resistance of the bushing 350 is stronger than that of the rolling element 320. The bushing 350 effectively reduces friction, for example, enabling oil-free lubrication, and also improves the wear resistance of the rolling element 320 on the shaft center 311, thereby increasing the service life of the roller body 300 to a certain extent.

[0083] Optionally, the shaft center 311 is clearance-fitted with the bushing 350.

[0084] Optionally, the rolling element 320 is interference-fitted with the bushing 350 so that the bushing 350 is securely connected inside the rolling element 320.

[0085] Optionally, the bushing 350 is made of composite material, such as a three-layer SF-1W type composite material (DC01 substrate + intermediate copper alloy sintered layer + black modified polytetrafluoroethylene coating with a thickness of 0.01 mm to 0.03 mm on the inner surface) rolled up.

[0086] Optionally, the rolling element 320 may be made of stainless steel or other materials, such as 40Cr13 martensitic stainless steel or other stainless steel materials with better performance.

[0087] In some embodiments, the number of roller bodies 300 along the axial direction perpendicular to the roller shaft 310 is one or two. For example Figures 2-4 The turnout roller assembly shown includes two roller bodies 300. Figure 5 The turnout roller assembly shown includes one roller body 300.

[0088] See Figures 2-5 , Figure 11 and Figure 12 As shown, in some embodiments, along the axial direction perpendicular to the roller shaft 310, the receiving cavity 110 is provided with receiving cavity openings 111 at the ends of the first frame 100 and the second frame 200.

[0089] Along the axial direction perpendicular to the roller shaft 310, the turnout roller assembly is provided with two shaft mating holes 120.

[0090] The height of the shaft mating hole 120 near the cavity opening 111 is higher than the height of the shaft mating hole 120 away from the cavity opening 111; wherein, the height of the shaft mating hole 120 refers to the distance between the shaft mating hole 120 and the surface of the second frame 200 facing away from the first frame 100. In this embodiment, the height of the shaft mating hole 120 near the cavity opening 111 is higher than the height of the shaft mating hole 120 away from the cavity opening 111, that is, the height of the shaft end 312 near the cavity opening 111 is higher than the height of the shaft end 312 away from the cavity opening 111, so as to facilitate the smooth movement of the switch rail during the switching process.

[0091] See Figures 2-5 , Figure 11 and Figure 12As shown, in some embodiments, both the first frame 100 and the second frame 200 are provided with mounting holes 140. Fasteners 150 pass through the mounting holes 140 of the first frame 100 and the second frame 200, and the fasteners 150 can be screwed onto the fastening nuts 400. Through the mounting holes 140 and the fasteners 150, the turnout roller assembly can be mounted on the roller slide plate. The fasteners 150 and the fastening nuts 400 form the turnout roller assembly as a whole, facilitating the packaging, transportation, and transfer of the turnout roller assembly. Optionally, the fasteners 150 are screws or other products.

[0092] Optionally, the mounting hole 140 has an oblong or other shape to facilitate the fastener 150 in mounting the turnout roller assembly onto the roller slide plate.

[0093] In this embodiment, after the second frame 200 is placed at the installation position of the roller slide plate of the turnout switch, the installation surface of the roller body 300 is rotated to adjust the height of the roller working surface, and then the first frame 100 is installed. Fasteners 150 are passed through the installation holes 140 of the first frame 100 and the second frame 200 and connected to the threaded holes of the roller slide plate of the turnout switch.

[0094] Optionally, the first frame 100 may be made of stainless steel, alloy or other materials; for example, the first frame 100 may be made of ZG230-450, QT450-10 or other materials with better performance.

[0095] Optionally, the second frame 200 may be made of stainless steel, alloy or other materials; for example, the second frame 200 may be made of ZG230-450, QT450-10 or other materials with better performance.

[0096] This embodiment also provides a turnout switch, including a plurality of turnout roller devices as described in any of the above embodiments; at least some of the turnout roller devices include one roller body 300, and at least some of the turnout roller devices include two roller bodies 300. Figure 2 The switch roller assembly shown includes two roller assemblies. Figure 5 The diagram shows a turnout roller assembly comprising a roller assembly.

[0097] The turnout switch described in this embodiment includes a turnout roller device. The height of the axis of the roller shaft 310 can be adjusted by rotating the shaft end 312, thereby adjusting the height of the rolling element 320 sleeved on the middle part 311 of the shaft. Since the cross-section of the shaft end 312 is a regular polygon and the regular polygon is a centrally symmetrical figure, the rotation angle of the shaft end 312 can be easily adjusted to make the rolling element 320 reach a preset height. This allows for rapid adjustment of the height of the rolling element 320, eliminating the need for the roller height adjustment plate to be fitted with a suitable height in the prior art. It also effectively avoids the need to disassemble the entire turnout roller device to install the roller height adjustment plate of a suitable height in the prior art, thus effectively improving the efficiency of the height adjustment of the rolling element 320.

[0098] The turnout roller device and turnout switch described in this embodiment have the following effects:

[0099] 1. Quick adjustment: By rotating the roller shaft 310, specifically the end 312 of the shaft, the height of the rolling element 320 can be quickly adjusted, that is, the height of the roller can be adjusted without replacing the height adjustment plate, which greatly shortens the maintenance time.

[0100] 2. Precise control: By adjusting the rotation angle of the shaft end 312, different mating surfaces of the shaft end 312 can be changed, allowing the rolling element 320 to reach a preset height, ensuring the accuracy of the adjustment.

[0101] 3. Reduced maintenance costs: The simple and quick adjustment process reduces reliance on professional personnel, thereby lowering maintenance costs.

[0102] The turnout switch provided in this embodiment includes the turnout roller device described above. The technical features of the turnout roller device disclosed above are also applicable to this turnout switch, and the technical features of the previously disclosed turnout roller device will not be described again. The turnout switch described in this embodiment has the advantages of the turnout roller device described above, and the advantages of the turnout roller device disclosed above will not be described again here.

[0103] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turnout roller device, characterized in that, It includes a first frame (100), a second frame (200), and a roller body (300). The roller body (300) includes a roller shaft (310) and rolling elements (320); the roller shaft (310) includes a central portion (311) and two end portions (312), and the central portion (311) is connected between the two end portions (312) along the axial direction of the roller shaft (310); the axis of the roller shaft (310) is collinear with the axis of the rolling elements (320), and the axis of the roller shaft (310) is the axis of the central portion (311); The rolling element (320) is fitted over the middle portion (311) of the shaft and is configured to rotate about the middle portion (311); The first frame (100) is connected to the second frame (200) and forms a shaft mating hole (120) for accommodating at least a portion of the shaft end (312) and a receiving cavity (110) for accommodating the rolling element (320). The cross-section of the shaft end (312) is a regular polygon, and the regular polygon is a centrally symmetric figure. The shape of the shaft mating hole (120) is adapted to the shape of the shaft end (312). The distances between the axis of the shaft end (312) and each side of the regular polygon are not the same, or the distances between the axis of the shaft end (312) and each side of the regular polygon are partially different.

2. The turnout roller device according to claim 1, characterized in that, The cross-section of the shaft end (312) is square; the distance between the axis of the shaft end (312) and the four sides of the square is different.

3. The turnout roller device according to claim 1, characterized in that, The first frame (100) includes a corresponding first top surface and a first bottom surface, and the second frame (200) includes a corresponding second top surface and a second bottom surface; The shaft mating hole (120) includes a first shaft hole area (121) and a second shaft hole area (122); The first shaft hole area (121) is disposed on the first bottom surface of the first frame (100), and the second shaft hole area (122) is disposed on the second top surface of the second frame (200); Along the radial direction of the roller body (300), the sum of the depth of the first shaft hole region (121) and the depth of the second shaft hole region (122) is not greater than the height of the shaft end (312).

4. The turnout roller device according to claim 3, characterized in that, The first top surface includes a protrusion (130) corresponding to the first shaft hole area (121), and the surface of the rolling element (320) facing away from the second bottom surface protrudes from the protrusion (130).

5. The turnout roller device according to claim 1, characterized in that, The roller body (300) also includes a sealing skeleton (330) and a sealing element (340). The roller (310) further includes a shaft sealing mating part (313); the shaft sealing mating part (313) is connected between the middle part (311) of the shaft and the end part (312) of the shaft, and the outer diameter of the shaft sealing mating part (313) is smaller than the outer diameter of the middle part (311) of the shaft, and the axis of the shaft sealing mating part (313) and the axis of the middle part (311) of the shaft are collinear; The sealing skeleton (330) is sleeved on the shaft sealing mating part (313), and the sealing skeleton (330) and the shaft sealing mating part (313) are press-fitted; the sealing skeleton (330) is located inside the receiving cavity (110), and there is a gap between the first frame (100) and the second frame (200) and the sealing skeleton (330); The outer peripheral surface of the sealing skeleton (330) is provided with a skeleton groove, which is located at one end of the sealing skeleton (330) near the middle part (311) of the shaft; the sealing member (340) is accommodated in the skeleton groove, and the end of the sealing member (340) is in sealing contact with the end of the rolling element (320); the sealing member (340) is configured not to rotate with the rotation of the rolling element (320); The outer diameter of the sealing skeleton (330) is smaller than the outer diameter of the rolling element (320).

6. The turnout roller device according to claim 5, characterized in that, The roller body (300) also includes a bushing (350); the bushing (350) is connected between the middle part (311) of the shaft and the rolling element (320); the wear resistance of the bushing (350) is stronger than that of the rolling element (320); the rolling element (320) and the bushing (350) are interference fit.

7. The turnout roller device according to claim 1, characterized in that, The number of roller bodies (300) is one or two along the axial direction perpendicular to the roller shaft (310).

8. The turnout roller device according to claim 1, characterized in that, Along the axial direction perpendicular to the roller shaft (310), the receiving cavity (110) is provided with receiving cavity openings (111) at the ends of the first frame (100) and the second frame (200), and the turnout roller device is provided with two shaft mating holes (120). The height of the shaft mating hole (120) near the cavity opening (111) is higher than the height of the shaft mating hole (120) away from the cavity opening (111); wherein, the height of the shaft mating hole (120) refers to the distance between the shaft mating hole (120) and the surface of the second frame (200) away from the first frame (100).

9. The turnout roller device according to claim 1, characterized in that, Both the first frame (100) and the second frame (200) are provided with mounting holes (140), and fasteners (150) pass through the mounting holes (140) of the first frame (100) and the second frame (200) and can be screwed with fastening nuts (400); The mounting hole (140) has an oblong cross-section.

10. A turnout switch, characterized in that, Includes multiple turnout roller devices as described in any one of claims 1-9; At least a portion of the turnout roller assembly includes one roller body (300), and at least a portion of the turnout roller assembly includes two roller bodies (300).

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