Switch roller device and switch

Abstract

A switch roller device and a switch point, relating to the technical field of railways. The switch roller device includes a first bracket, a second bracket, a rolling element, a first bushing assembly and a second bushing assembly; along the axial direction of the rolling element, the first bushing assembly and the second bushing assembly are respectively sleeved at both ends of the rolling element to form a roller assembly; both the first bushing assembly and the second bushing assembly include an eccentric sleeve; the eccentric sleeve includes a first eccentric sleeve portion, a second eccentric sleeve portion, a third eccentric sleeve portion and an eccentric sleeve cavity; the axis of the rolling element is not collinear with the axis of the eccentric sleeve; the eccentric sleeve is configured to be able to rotate and adjust around its own axis so that part of the rolling element protrudes from the surface of the first bracket facing away from the second bracket. The switch point includes the switch roller device. The present invention provides a switch roller device and a switch point to solve the technical problems in the prior art that the adjustment process of the roller height of the fixed-structure switch roller device is cumbersome and the adjustment speed is slow.

Description

Technical Field

[0001] The invention relates to the technical field of railways, and in particular to a turnout roller device and a turnout switch. Background Art

[0002] The turnout roller device is a common device in railway transportation. Figure 1 The application schematic diagram of the turnout roller device shown in the figure, the turnout roller device 1 is assembled on the roller slide bed 3 below the railway turnout switch point rail 2. Specifically, the roller slide bed 3 is provided with a mounting threaded hole 4, and the bolt 6 passes through the turnout roller device 1 and is screwed to the mounting threaded hole 4 to fix the turnout roller device 1 on the roller slide bed 3 ( Figure 1 The stock rail 5 is also shown in the figure. The main function of the turnout roller device 1 is to ensure the smooth movement of the point rail 2 during the switching process of the switch. In order to meet the operation requirements of high-speed trains, the turnout roller device is required to have high load-bearing capacity and good wear resistance. The turnout roller device is usually made of high-strength alloy materials, and its dimensional accuracy and surface finish are ensured through precise processing technology.

[0003] In actual application, the turnout roller device needs regular maintenance and inspection to ensure its stable performance. Maintenance work mainly includes cleaning, lubrication and wear inspection. The purpose of cleaning is to remove dirt and impurities on the surface of the roller to prevent it from affecting the normal operation of the switch. The purpose of lubrication is to reduce the friction coefficient between the bottom of the point rail and the roller slide bed to extend its service life. The purpose of wear inspection is to promptly discover and replace worn parts to avoid affecting the safe operation of high-speed railways due to component damage.

[0004] Traditional turnout roller devices usually adopt a fixed structure, which adapts to different operating conditions by replacing roller height adjustment plates of different specifications. When replacing the roller height adjustment plates, it is sometimes necessary to disassemble the entire turnout roller device. The replacement process is cumbersome and requires professional operation, and cannot achieve quick adjustment. Summary of the invention

[0005] The object of the present invention is to provide a turnout roller device and a turnout switch, so as to solve the technical problems of the fixed structure turnout roller device in the prior art that the roller height adjustment process is complicated and the adjustment speed is slow to a certain extent.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A turnout roller device comprises a first bracket, a second bracket, a rolling body, a first sleeve assembly and a second sleeve assembly;

[0008] Axially along the rolling elements, the first bushing assembly and the second bushing assembly are respectively sleeved at both ends of the rolling elements to form a roller assembly; perpendicularly to the axis of the rolling elements, the first bracket is connected to at least one of the roller assemblies;

[0009] Both the first bushing assembly and the second bushing assembly include eccentric sleeves;

[0010] The eccentric sleeve includes a first eccentric sleeve portion, a second eccentric sleeve portion, and a third eccentric sleeve portion connected in sequence along its own axis, and further includes an eccentric sleeve cavity for inserting the rolling elements; the outer diameter of the second eccentric sleeve portion is respectively smaller than the outer diameter of the first eccentric sleeve portion and the outer diameter of the third eccentric sleeve portion; the axis of the eccentric sleeve cavity is collinear with the axis of the rolling elements, the axis of the outer peripheral wall of the second eccentric sleeve portion is collinear with the axis of the eccentric sleeve, and the axis of the rolling elements is not collinear with the axis of the eccentric sleeve;

[0011] The first bracket and the second bracket are cooperatively connected to form a bushing fitting hole for accommodating the second eccentric sleeve portion and an accommodating cavity for accommodating the rolling elements;

[0012] The eccentric sleeve is configured to be rotatably adjustable about its own axis so that the rolling elements rotate synchronously with the eccentric sleeve, thereby causing some of the rolling elements to protrude from the surface of the first bracket facing away from the second bracket.

[0013] In any of the above technical solutions, optionally, the rolling elements include rolling working portions and rolling shaft portions; axially along the rolling elements, both ends of the rolling working portions are connected with the rolling shaft portions; the rolling shaft portions are inserted into the eccentric sleeve cavities; the rolling working portions are accommodated in the accommodating cavities;

[0014] The axis of the rolling elements, the axis of the rolling working portions, and the axis of the rolling shaft portions are collinear;

[0015] The minimum diameter of the rolling working portions is greater than the diameter of the rolling shaft portions;

[0016] Axially along the rolling elements, the length of the rolling shaft portions is greater than the depth of the eccentric sleeve cavities, and the length of the second eccentric sleeve portions is greater than the depth of the bushing fitting holes;

[0017] Dimension a is greater than dimension b so that the end surface of the rolling shaft portions is spaced from the bottom of the eccentric sleeve cavities; wherein, dimension a is the difference between the length of the rolling shaft portions and the depth of the eccentric sleeve cavities, and dimension b is the difference between the length of the second eccentric sleeve portions and the depth of the bushing fitting holes.

[0018] In any of the above technical solutions, optionally, the first sleeve assembly and the second sleeve assembly both include a wear-resistant sleeve; the wear-resistant sleeve is connected between the eccentric sleeve and the rolling shaft portion; the wear resistance of the wear-resistant sleeve is stronger than that of the eccentric sleeve;

[0019] The outer wall of the wear-resistant sleeve is coaxially arranged with the inner hole;

[0020] The wear-resistant sleeve has a notch extending along its axial direction and open at both ends, and the notch passes through the outer wall and inner hole of the wear-resistant sleeve;

[0021] The number of the wear-resistant sleeves is at least two, and the notches of all the wear-resistant sleeves are arranged in different lines.

[0022] In any of the above technical solutions, optionally, the first sleeve assembly and the second sleeve assembly both include a seal; the eccentric sleeve further includes a seal cavity communicated with the eccentric sleeve cavity; the seal is sleeved on the rolling shaft portion and accommodated in the seal cavity, and the seal cavity opens at one end of the third eccentric sleeve portion away from the first eccentric sleeve portion;

[0023] The sealing cavity is located in the third eccentric sleeve portion, and the eccentric sleeve cavity is located in the third eccentric sleeve portion and at least a portion of the second eccentric sleeve portion;

[0024] The outer peripheral wall of the first eccentric sleeve portion, the outer peripheral wall of the second eccentric sleeve portion and the outer peripheral wall of the third eccentric sleeve portion are coaxially arranged;

[0025] The axis of the seal is colinear with the axis of the rolling element;

[0026] The sealing member is a lip seal ring;

[0027] The roller surface of the rolling working part is in an arc shape.

[0028] In any of the above technical solutions, optionally, a rotation limit stop is provided on the outer peripheral wall of the second eccentric sleeve, and the rotation limit stop is fixedly connected to the first eccentric sleeve;

[0029] The cross section of the rotation limit stopper is in a sector ring shape, and the center of the sector ring shape is located on the axis of the outer peripheral wall of the second eccentric sleeve portion;

[0030] The first bracket and / or the second bracket is provided with a rotation limiting groove for accommodating the rotation limiting stop.

[0031] In any of the above technical solutions, optionally, the rotation limit stop is configured to rotate within the rotation limit groove within a range of 0-180°;

[0032] The first bracket is located above the second bracket, and the rotation limiting groove is arranged on the end surfaces of the first bracket and the second bracket; the volume of the rotation limiting groove on the first bracket is smaller than the volume of the rotation limiting groove on the second bracket; along the circumferential extension direction of the rotation limiting groove, the heights of the two ends of the rotation limiting groove are different;

[0033] The outer peripheral wall of the first eccentric sleeve is provided with a scale structure for displaying the rotation angle of the rotation limit stop; the scale structure is a groove or a protrusion.

[0034] In any of the above technical solutions, optionally, an operating portion is provided on the end surface of the first eccentric sleeve portion away from the third eccentric sleeve portion; the operating portion is non-cylindrical in shape;

[0035] The outer surface of the second eccentric sleeve is provided with an anti-slip structure.

[0036] In any of the above technical solutions, optionally, the shape of the operating portion is a triangular column, a rectangular column or a hexagonal column;

[0037] The anti-slip structure is processed by knurling technology.

[0038] In any of the above technical solutions, optionally, along the axial direction perpendicular to the rolling body, the accommodating cavity is provided with an accommodating cavity opening at the end of the first bracket and the end of the second bracket; along the axial direction perpendicular to the rolling body, the switch roller device is provided with two sleeve matching holes; the axis height of the sleeve matching hole close to the accommodating cavity opening is higher than the axis height of the sleeve matching hole far from the accommodating cavity opening; wherein the axis height refers to the distance between the axis and the surface of the second bracket away from the first bracket, and the axis of the sleeve matching hole is collinear with the axis of the eccentric sleeve;

[0039] The first bracket and the second bracket are both provided with mounting holes, and the fasteners pass through the mounting holes of the first bracket and the second bracket and can be screwed with the fastening nuts;

[0040] The cross section of the mounting hole is an oblong.

[0041] A turnout switch, comprising a plurality of the turnout roller devices described above;

[0042] At least part of the switch roller device includes one roller assembly, and at least part of the switch roller device includes two roller assemblies.

[0043] The beneficial effects of the present invention are mainly:

[0044] The switch roller device and the switch point provided by the present invention include a first bracket, a second bracket, rolling elements, a first bushing assembly, and a second bushing assembly. The first bushing assembly and the second bushing assembly are respectively sleeved at both ends of the rolling elements to form a roller assembly. Since both the first bushing assembly and the second bushing assembly include eccentric sleeves, when adjusting the height of the rolling elements, the eccentric sleeves can be rotated to make some of the rolling elements protrude from the surface of the first bracket facing away from the second bracket, thereby realizing the rapid adjustment of the height of the rolling elements. This can effectively avoid the operation of disassembling the entire switch roller device due to the need to replace roller height adjustment shims of different specifications in the prior art, and effectively improve the efficiency of adjusting the height of the rolling elements.

[0045] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0047] Figure 1 It is a schematic application diagram of an existing switch roller device;

[0048] Figure 2 It is a schematic structural diagram (double roller) of the switch roller device provided by the embodiment of the present invention;

[0049] Figure 3 For Figure 2 The front view of the switch roller device shown;

[0050] Figure 4 For Figure 3 The top view of the switch roller device shown;

[0051] Figure 5 For Figure 3 The A-A cross-sectional view of the switch roller device shown;

[0052] Figure 6 For Figure 5 The partial enlarged view of the switch roller device shown;

[0053] Figure 7 It is another schematic structural diagram (single roller) of the switch roller device provided by the embodiment of the present invention;

[0054] Figure 8 It is a schematic structural diagram of the eccentric sleeve assembly provided by the embodiment of the present invention;

[0055] Figure 9 It is a cross-sectional view of the eccentric sleeve assembly provided by the embodiment of the present invention;

[0056] Figure 10 It is a schematic structural diagram of the eccentric sleeve provided by the embodiment of the present invention;

[0057] Figure 11 It is a front view of the eccentric sleeve provided by the embodiment of the present invention;

[0058] Figure 12 It is Figure 11 The B-B cross-sectional view of the eccentric sleeve shown;

[0059] Figure 13 It is Figure 11 The C-C cross-sectional view of the eccentric sleeve shown;

[0060] Figure 14 It is Figure 11 The top view of the eccentric sleeve shown;

[0061] Figure 15 It is a schematic structural diagram of the wear-resistant sleeve provided by the embodiment of the present invention;

[0062] Figure 16 It is a schematic structural diagram of the upper bracket provided by the embodiment of the present invention;

[0063] Figure 17 It is a front view of the upper bracket provided by the embodiment of the present invention;

[0064] Figure 18 It is Figure 17 The bottom view of the upper bracket shown;

[0065] Figure 19 It is a schematic structural diagram of the lower bracket provided by the embodiment of the present invention;

[0066] Figure 20 It is a front view of the lower bracket provided by the embodiment of the present invention;

[0067] Figure 21 It is Figure 20 The bottom view of the upper bracket shown;

[0068] Figure 22 It is a schematic structural diagram of the rolling element provided by the embodiment of the present invention.

[0069] Icon: 1 - Switch roller device; 2 - Switch rail; 3 - Roller slide plate; 4 - Mounting threaded hole; 5 - Stock rail; 6 - Bolt;

[0070] 100 - First support; 110 - Accommodating cavity; 111 - Opening of the accommodating cavity; 120 - Bushing fitting hole; 130 - Rotation limiting groove; 140 - Mounting hole; 150 - Fastener; 200 - Second support; 300 - Rolling element; 310 - Rolling working part; 320 - Rolling shaft part; 400 - First bushing assembly; 500 - Second bushing assembly; 610 - Eccentric sleeve; 611 - First eccentric sleeve part; 612 - Second eccentric sleeve part; 613 - Third eccentric sleeve part; 614 - Eccentric sleeve cavity; 615 - Sealing cavity; 616 - Operating part; 617 - Rotation limiting stop; 618 - Scale structure; 620 - Seal; 630 - Wear-resistant sleeve; 631 - Notch; 700 - Lock nut. Detailed implementation mode

[0071] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0072] 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 present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0073] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0074] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0075] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not require the components to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only 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 inclined.

[0076] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0077] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0078] Embodiment

[0079] This embodiment provides a switch roller device and a switch point, which can effectively solve the technical problems in the prior art that the adjustment process of the roller height of the fixed-structure switch roller device is cumbersome and the adjustment speed is slow. It can omit the step of preparing the roller height adjustment shims with corresponding heights according to the surveying and mapping results under different working conditions in the prior art, and can also omit the operation of disassembling the entire switch roller device when performing the roller height adjustment and maintenance in the prior art. The switch roller device belongs to an eccentric sleeve adjustment type passenger dedicated line switch roller device, and can be applied to various high-speed railway switch systems, especially in occasions with high requirements for running speed and safety.

[0080] See Figures 2 - 22 As shown, the switch roller device provided in this embodiment includes a first bracket 100, a second bracket 200, a rolling element 300, a first bushing assembly 400, and a second bushing assembly 500.

[0081] Axially along the rolling element 300, the first bushing assembly 400 and the second bushing assembly 500 are respectively sleeved at both ends of the rolling element 300 to form a roller assembly; perpendicular to the axis of the rolling element 300, the first bracket 100 is connected to at least one roller assembly; Figures 2 - 4 It shows that the switch roller device includes two roller assemblies, Figure 7 It shows that the switch roller device includes one roller assembly.

[0082] Both the first bushing assembly 400 and the second bushing assembly 500 include an eccentric sleeve 610.

[0083] AsFigure 12 As shown, the eccentric sleeve 610 includes a first eccentric sleeve portion 611, a second eccentric sleeve portion 612, and a third eccentric sleeve portion 613 connected in sequence along its own axial direction, and further includes an eccentric sleeve cavity 614 for inserting the rolling elements 300; the outer diameter of the second eccentric sleeve portion 612 is respectively smaller than the outer diameters of the first eccentric sleeve portion 611 and the third eccentric sleeve portion 613; the axis of the eccentric sleeve cavity 614 is collinear with the axis of the rolling elements 300, the axis of the outer peripheral wall of the second eccentric sleeve portion 612 is collinear with the axis of the eccentric sleeve 610, and the axis of the rolling elements 300 is not collinear with the axis of the eccentric sleeve 610; that is, the axis of the eccentric sleeve cavity 614 is not collinear with the axis of the outer peripheral wall of the second eccentric sleeve portion 612.

[0084] The first bracket 100 is cooperatively connected with the second bracket 200, and forms a bushing fitting hole 120 for accommodating the second eccentric sleeve portion 612, and forms a receiving cavity 110 for accommodating the rolling elements 300; that is to say, the first eccentric sleeve portion 611 and the third eccentric sleeve portion 613 are located outside the bushing fitting hole 120, and the bushing fitting hole 120 is restricted between the first eccentric sleeve portion 611 and the third eccentric sleeve portion 613, thereby restricting the distance that the first bracket 100 and the second bracket 200 move along the axial direction of the eccentric sleeve 610. Optionally, the axis of the bushing fitting hole 120 is collinear with the axis of the outer peripheral wall of the second eccentric sleeve portion 612. Optionally, the receiving cavity 110, the third eccentric sleeve portion 613, the second eccentric sleeve portion 612, and the first eccentric sleeve portion 611 are arranged in sequence along the axial direction of the rolling elements 300, that is, the third eccentric sleeve portion 613 is closer to the receiving cavity 110 relative to the first eccentric sleeve portion 611, and the first eccentric sleeve portion 611 is located at the end of the first bracket 100 and the second bracket 200 away from the receiving cavity 110.

[0085] The eccentric sleeve 610 is configured to be rotatably adjusted about its own axis, so that the rolling elements 300 rotate synchronously with the eccentric sleeve 610, so that some of the rolling elements 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200. In this embodiment, the first bracket 100 is, for example, located above the second bracket 200. In this embodiment, the rolling elements 300 rotate synchronously with the eccentric sleeve 610 about the axis of the eccentric sleeve 610 for adjustment, so that some of the rolling elements 300 reach a preset height, so as to adapt to different working conditions. The preset height is the distance between the rolling elements 300 and the surface of the second bracket 200 facing away from the first bracket 100.

[0086] In the switch roller device described in this embodiment, it includes a first bracket 100, a second bracket 200, a rolling element 300, a first bushing assembly 400, and a second bushing assembly 500. The first bushing assembly 400 and the second bushing assembly 500 are respectively sleeved at both ends of the rolling element 300 to form a roller assembly. Since both the first bushing assembly 400 and the second bushing assembly 500 include an eccentric sleeve 610, when adjusting the height of the rolling element 300, the height of the rolling element 300 can be quickly adjusted by rotating the eccentric sleeve 610 to make part of the rolling element 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200, effectively avoiding the operation of disassembling the entire switch roller device due to the need to replace roller height adjustment shims of different specifications in the prior art, and effectively improving the efficiency of adjusting the height of the rolling element 300.

[0087] As Figure 22 shown, in an alternative solution of this embodiment, the rolling element 300 includes a rolling working part 310 and a rolling shaft part 320; along the axial direction of the rolling element 300, both ends of the rolling working part 310 are connected with the rolling shaft part 320; the rolling shaft part 320 is inserted into the eccentric sleeve cavity 614; the rolling working part 310 is accommodated in the accommodation cavity 110. Optionally, the rolling element 300 is an axisymmetric structure; optionally, the two rolling shaft parts 320 are symmetrically arranged on both sides of the rolling working part 310. Optionally, the rolling working part 310, the third eccentric sleeve part 613, the second eccentric sleeve part 612, and the first eccentric sleeve part 611 are arranged in sequence along the axial direction of the rolling element 300.

[0088] Optionally, the axis of the rolling element 300, the axis of the rolling working part 310, and the axis of the rolling shaft part 320 are collinear.

[0089] Optionally, the minimum diameter of the rolling working part 310 is greater than the diameter of the rolling shaft part 320; during the switchover process of the switch, the rolling working part 310 supports and connects the switch rail to move smoothly.

[0090] Optionally, the roller surface of the rolling working part 310 is arc-shaped.

[0091] As Figure 5 and Figure 6 shown, optionally, along the axial direction of the rolling element 300, the length of the rolling shaft part 320 is greater than the depth of the eccentric sleeve cavity 614, so that there is a gap between the end face of the rolling working part 310 and the end face of the third eccentric sleeve part 613, and further there is a gap between the rolling working part 310 and the eccentric sleeve 610, effectively avoiding the generation of friction between the end face of the rolling working part 310 and the eccentric sleeve 610 when the rolling element 300 rolls, thus effectively ensuring the normal rolling of the rolling element 300 and effectively extending the service life of the rolling element 300.

[0092] Optionally, the length of the second eccentric sleeve portion 612 is greater than the depth of the bushing mating hole 120, that is, at least one of the first eccentric sleeve portion 611 and the third eccentric sleeve portion 613 is spaced from the first bracket 100 and the second bracket 200, that is, there can be a gap between the first eccentric sleeve portion 611 and / or the third eccentric sleeve portion 613 and the first bracket 100 and the second bracket 200; optionally, the first eccentric sleeve portion 611 is located outside the first bracket 100 and the second bracket 200.

[0093] As Figure 5 and Figure 6 shown, optionally, dimension a is greater than dimension b so that the end face of the rolling shaft portion 320 is spaced from the bottom of the eccentric sleeve cavity 614, that is, there is a gap c between the end face of the rolling shaft portion 320 and the bottom of the eccentric sleeve cavity 614 (as Figure 6 shown); wherein, dimension a is the difference between the length of the rolling shaft portion 320 and the depth of the eccentric sleeve cavity 614, and dimension b is the difference between the length of the second eccentric sleeve portion 612 and the depth of the bushing mating hole 120. By making dimension a greater than dimension b, there is a gap between the end face of the rolling shaft portion 320 and the bottom of the eccentric sleeve cavity 614, and further there is a gap between the end face of the rolling shaft portion 320 and the corresponding end face of the eccentric sleeve 610, effectively avoiding the generation of frictional force between the end face of the rolling shaft portion 320 and the corresponding end face of the eccentric sleeve 610 when the rolling elements 300 roll, thus effectively ensuring the normal rolling of the rolling elements 300 and effectively extending the service life of the rolling elements 300.

[0094] See Figures 5 - 9 、 Figure 15 shown, in an alternative embodiment of the present embodiment, both the first bushing assembly 400 and the second bushing assembly 500 include wear-resistant sleeves 630; the wear-resistant sleeves 630 are connected between the eccentric sleeve 610 and the rolling shaft portion 320; the wear resistance of the wear-resistant sleeves 630 is stronger than that of the eccentric sleeve 610; through the wear-resistant sleeves 630, the wear resistance of the first bushing assembly 400 and the second bushing assembly 500 is improved.

[0095] Optionally, the outer wall and the inner hole of the wear-resistant sleeve 630 are coaxially arranged.

[0096] Optionally, the wear-resistant sleeve 630 has a notch 631 extending along its own axis and opening at both ends, and the notch 631 penetrates the outer wall and the inner hole of the wear-resistant sleeve 630; through the notch 631, it helps to improve the elasticity of the wear-resistant sleeve 630 and helps to install the wear-resistant sleeve 630 in the eccentric sleeve 610, for example, the wear-resistant sleeve 630 is installed in the eccentric sleeve cavity 614 of the eccentric sleeve 610.

[0097] Optionally, the wear-resistant sleeve 630 is in interference fit with the eccentric sleeve 610.

[0098] Optionally, the number of wear-resistant sleeves 630 is at least two, and the notches 631 of all the wear-resistant sleeves 630 are arranged non-collinearly. By arranging the notches 631 of all the wear-resistant sleeves 630 non-collinearly, the supporting ability of the first bushing assembly 400 and the second bushing assembly 500 is improved.

[0099] See Figures 5 - 12 As shown, in an alternative embodiment of the present embodiment, both the first bushing assembly 400 and the second bushing assembly 500 include a seal 620; the eccentric sleeve 610 further includes a seal cavity 615 communicating with the eccentric sleeve cavity 614; the seal 620 is sleeved on the rolling shaft portion 320, and the seal 620 is received in the seal cavity 615, and the seal cavity 615 opens at one end of the third eccentric sleeve portion 613 facing away from the first eccentric sleeve portion 611; through the seal 620, foreign matters such as dust are prevented from entering the first bushing assembly 400 and the second bushing assembly 500.

[0100] Optionally, the seal cavity 615 is located in the third eccentric sleeve portion 613, and the eccentric sleeve cavity 614 is located in the third eccentric sleeve portion 613 and at least a part of the second eccentric sleeve portion 612; optionally, the eccentric sleeve cavity 614 is located in the third eccentric sleeve portion 613 and the second eccentric sleeve portion 612.

[0101] Optionally, the outer peripheral walls of the first eccentric sleeve portion 611, the second eccentric sleeve portion 612, and the third eccentric sleeve portion 613 are coaxially arranged. That is, the outer peripheral walls of the first eccentric sleeve portion 611, the second eccentric sleeve portion 612, and the third eccentric sleeve portion 613 are all collinear with the axis of the eccentric sleeve 610.

[0102] Optionally, the axis of the eccentric sleeve cavity 614, the axis of the seal 620, and the axis of the rolling elements 300 are collinear.

[0103] Optionally, the seal 620 is a lip seal or a seal of other shapes.

[0104] See Figures 9 - 14 As shown, in an alternative embodiment of the present embodiment, a rotation limit stop 617 is provided on the outer peripheral wall of the second eccentric sleeve portion 612, and the rotation limit stop 617 is fixedly connected to the first eccentric sleeve portion 611. Through the rotation limit stop 617, the angle of rotation adjustment of the eccentric sleeve 610 about its own axis is limited, so that the rotation adjustment of the eccentric sleeve 610 is more accurate, and thus it is beneficial to the height adjustment of the rolling elements 300.

[0105] Optionally, the cross section of the rotation limit stop 617 is in a sector ring shape, and the center of the sector ring is located on the axis of the outer peripheral wall of the second eccentric sleeve portion 612; by the cross section of the rotation limit stop 617 being in a sector ring shape, the rotation adjustment accuracy of the eccentric sleeve 610 is improved.

[0106] As Figures 16 - 21As shown, optionally, the first bracket 100 and / or the second bracket 200 are provided with a rotation limit groove 130 for accommodating the rotation limit stop 617. Through the rotation limit groove 130, the rotation limit stop 617 can be better accommodated; through the rotation limit groove 130, the rotation angle of the rotation limit stop 617 can also be limited, and thus the rotation adjustment angle of the eccentric sleeve 610 around its own axis can be limited.

[0107] In an alternative embodiment of the present example, the rotation limit stop 617 is configured to rotate within a range of 0-180° in the rotation limit groove 130; by setting the rotation angle range of the rotation limit stop 617 to 0-180°, the rotation accuracy of the rotation limit stop 617 can be improved, and thus the rotation adjustment accuracy of the eccentric sleeve 610 around its own axis can be improved, thereby improving the height adjustment accuracy of the rolling elements 300.

[0108] Optionally, the first bracket 100 is located above the second bracket 200, and the rotation limit groove 130 is provided on the end faces of the first bracket 100 and the second bracket 200; the volume of the rotation limit groove 130 on the first bracket 100 is smaller than the volume of the rotation limit groove 130 on the second bracket 200; along the circumferential extension direction of the rotation limit groove 130, the heights of both ends of the rotation limit groove 130 are different, that is, one end of the rotation limit groove 130 is relatively low and the other end is relatively high. In other words, one end of the rotation limit groove 130 located on the first bracket 100 is higher and one end located on the second bracket 200 is lower; by adopting such a design, the drainage performance of the rotation limit groove 130 can be improved, for example, draining rainwater and the like that may exist when the turnout roller device is in an outdoor environment. Wherein, the height of the end of the rotation limit groove 130 refers to the distance between the end of the rotation limit groove 130 and the surface of the second bracket 200 facing away from the first bracket 100.

[0109] Optionally, as Figure 13 、 Figure 17 and Figure 20 shown, the cross-section of the rotation limit stop 617 is in the shape of a sector ring with a central angle of 15°, the central angle corresponding to the rotation limit groove 130 on the first bracket 100 is 60°, the central angle corresponding to the rotation limit groove 130 on the second bracket 200 is 135°, and the rotation range of the rotation limit stop 617 in the rotation limit groove 130 is 0-180°.

[0110] Optionally, as Figures 8 - 10As shown, on the outer peripheral wall of the first eccentric sleeve portion 611, a scale structure 618 for displaying the rotation angle of the rotation limit stop 617 is provided; the scale structure 618 is a groove or a protrusion. Through the scale structure 618, the adjustment value can be accurately displayed, so as to improve the rotation accuracy of the rotation limit stop 617, and further improve the rotation adjustment accuracy of the eccentric sleeve 610 around its own axis, thereby improving the height adjustment accuracy of the rolling element 300, and ensuring the accuracy and repeatability of the adjustment.

[0111] See Figures 8 - 14 As shown, in an alternative solution of this embodiment, an operation portion 616 is provided on the end surface of the first eccentric sleeve portion 611 facing away from the third eccentric sleeve portion 613; through the operation portion 616, it is convenient to rotate the third eccentric sleeve portion 613, and further convenient to rotate the eccentric sleeve 610 around its own axis for adjustment.

[0112] Optionally, the shape of the operation portion 616 is non-cylindrical; by the non-cylindrical shape of the operation portion 616, the tool can better drive the operation portion 616 to rotate, and further drive the eccentric sleeve 610 to rotate to adjust the roller surface height of the rolling element 300.

[0113] Optionally, the shape of the operation portion 616 is a triangular prism, a rectangular prism or a hexagonal prism, or other shapes.

[0114] Optionally, an anti-slip structure is provided on the outer surface of the second eccentric sleeve portion 612; to a certain extent, the friction coefficient between the second eccentric sleeve portion 612 and the first bracket 100 / second bracket 200 is increased, which helps to improve the rotation adjustment accuracy of the eccentric sleeve 610 around its own axis, thereby improving the roller surface height adjustment accuracy of the rolling element 300. The anti-slip structure described in this embodiment can greatly increase the static friction between the first bracket 100 / second bracket 200 and the second eccentric sleeve portion 612 after the turnout roller device is installed on the roller slide plate, ensuring that the eccentric sleeve 610 does not rotate and the axis height of the rolling element 300 does not rise or fall under the rated load.

[0115] Optionally, the anti-slip structure is processed by a knurling process, or the anti-slip structure is processed by other processes.

[0116] See Figure 2 、 Figure 4 and Figure 7 As shown, in an alternative solution of this embodiment, along the axial direction perpendicular to the rolling element 300, accommodation cavity openings 111 are provided at both the end of the first bracket 100 and the end of the second bracket 200 of the accommodation cavity 110.

[0117] Optionally, along the axis perpendicular to the rolling elements 300, the switch roller device is provided with two bushing fitting holes 120; the axis height of the bushing fitting hole 120 close to the opening 111 of the accommodating cavity is higher than the axis height of the bushing fitting hole 120 far from the opening 111 of the accommodating cavity; wherein, the axis height refers to the distance between the axis and the surface of the second bracket 200 facing away from the first bracket 100, and the axis of the bushing fitting hole 120 is collinear with the axis of the eccentric sleeve 610. In this embodiment, the axis height of the bushing fitting hole 120 close to the opening 111 of the accommodating cavity is higher than the axis height of the bushing fitting hole 120 far from the opening 111 of the accommodating cavity, that is, the axis height of the eccentric sleeve 610 close to the opening 111 of the accommodating cavity is higher than the axis height of the eccentric sleeve 610 far from the opening 111 of the accommodating cavity, so as to facilitate the smooth movement of the switch rail during the switching process.

[0118] See Figures 2 - 4 、 Figures 16 - 21 As shown, optionally, both the first bracket 100 and the second bracket 200 are provided with mounting holes 140, and the fastener 150 passes through the mounting holes 140 of the first bracket 100 and the second bracket 200, and the fastener 150 can be screwed with the fastening nut 700; through the mounting holes 140 and the fastener 150, the switch roller device can be installed on the roller slide plate; through the fastener 150 and the fastening nut 700, the switch roller device is formed into a whole, which is helpful for the packaging, transportation, transfer, etc. of the switch roller device.

[0119] Optionally, the cross-section of the mounting hole 140 is oblong or other shapes, so as to help the fastener 150 install the switch roller device on the roller slide plate.

[0120] For the switch roller device described in this embodiment, the eccentric sleeves 610 of the first bushing assembly 400 and the eccentric sleeves 610 of the second bushing assembly 500 rotate and adjust respectively around their own axes. For example, according to the working conditions of different switches, use a height adjustment wrench to rotate the eccentric sleeves 610 of the first bushing assembly 400 and the eccentric sleeves 610 of the second bushing assembly 500, so as to drive the corresponding rolling elements 300 to rise and fall, and adjust the axis of the rolling elements 300 to a suitable height. That is, when the working arc surface height of the rolling elements 300 reaches the theoretical value, the rapid adjustment of the rolling elements 300 can be realized. Then pass the fastener 150 through the mounting holes 140 of the first bracket 100 and the second bracket 200, and threadedly fix it with the threaded hole of the roller slide plate, and use a locking wrench to lock the fastener 150 to fix the switch roller device on the roller slide plate.

[0121] The switch roller device described in this embodiment has the following advantages:

[0122] 1. Quick adjustment possible: By rotating the eccentric sleeve 610, the adjustment of the roller surface height of the rolling elements 300 can be quickly completed without replacing height adjustment shims, greatly shortening the maintenance time.

[0123] 2. Precise control possible: The adjustment value can be accurately displayed through the scale structure 618 to ensure the accuracy and repeatability of the adjustment.

[0124] 3. Maintenance cost reduction possible: Since the adjustment process is simple and fast, the dependence on professional personnel is reduced, thus lowering the maintenance cost.

[0125] 4. Safety improvement possible: The fast and precise adjustment ability ensures the smoothness of the switch during the switching process, improving the safety of high-speed rail operation.

[0126] This embodiment also provides a switch point, including a plurality of the switch roller devices described in any one of the above embodiments; at least part of the switch roller devices include a roller assembly (as Figure 7 shown, the switch roller device includes a roller assembly), and at least part of the switch roller devices include two roller assemblies ( Figures 2 - 4 shown, the switch roller device includes two roller assemblies).

[0127] The switch point described in this embodiment includes a switch roller device. Since both the first bushing assembly 400 and the second bushing assembly 500 of the switch roller device include an eccentric sleeve 610, when adjusting the height of the rolling elements 300, the eccentric sleeve 610 can be rotated to make part of the rolling elements 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200, thereby realizing the quick adjustment of the height of the rolling elements 300. It can effectively avoid the operation of disassembling the entire switch roller device due to the need to replace roller height adjustment shims of different specifications in the prior art, and effectively improve the efficiency of adjusting the height of the rolling elements 300.

[0128] The switch point provided in this embodiment includes the above-mentioned switch roller device. The technical features of the above-disclosed switch roller device are also applicable to this switch point, and the technical features of the above-disclosed switch roller device will not be repeated here. The switch point described in this embodiment has the advantages of the above switch roller device, and the advantages of the above-disclosed switch roller device will not be repeated here.

[0129] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A turnout roller device, characterized in that: It comprises a first bracket (100), a second bracket (200), a rolling body (300), a first shaft sleeve assembly (400) and a second shaft sleeve assembly (500); Along the axial direction of the rolling body (300), the first shaft sleeve assembly (400) and the second shaft sleeve assembly (500) are respectively sleeved on two ends of the rolling body (300) to form a roller assembly; along the axial direction perpendicular to the rolling body (300), the first bracket (100) is connected to at least one of the roller assemblies; The first shaft sleeve assembly (400) and the second shaft sleeve assembly (500) both comprise an eccentric sleeve (610); The eccentric sleeve (610) comprises a first eccentric sleeve portion (611), a second eccentric sleeve portion (612) and a third eccentric sleeve portion (613) which are sequentially connected along the axial direction thereof, and also comprises an eccentric sleeve cavity (614) for inserting the rolling body (300); the outer diameter of the second eccentric sleeve portion (612) is respectively smaller than the outer diameter of the first eccentric sleeve portion (611) and the outer diameter of the third eccentric sleeve portion (613); the axis of the eccentric sleeve cavity (614) is collinear with the axis of the rolling body (300), the axis of the outer peripheral wall of the second eccentric sleeve portion (612) is collinear with the axis of the eccentric sleeve (610), and the axis of the rolling body (300) is not collinear with the axis of the eccentric sleeve (610); The first bracket (100) is connected in a mating manner with the second bracket (200), and forms a shaft sleeve mating hole (120) for accommodating the second eccentric sleeve portion (612), and forms an accommodating cavity (110) for accommodating the rolling body (300); The eccentric sleeve (610) is configured to be rotatable and adjustable around its own axis, so that the rolling body (300) rotates synchronously with the eccentric sleeve (610), so that a portion of the rolling body (300) protrudes from a surface of the first bracket (100) away from the second bracket (200), thereby realizing rapid adjustment of the height of the rolling body (300); An operating portion (616) is provided on the end surface of the first eccentric sleeve portion (611) facing away from the third eccentric sleeve portion (613); The outer surface of the second eccentric sleeve (612) is provided with an anti-slip structure; The first bracket (100) and the second bracket (200) are both provided with mounting holes (140), and fasteners (150) pass through the mounting holes (140) of the first bracket (100) and the second bracket (200) and are used to be threadedly fixedly connected to threaded holes of a roller slide bed plate, so that the turnout roller device can be mounted on the roller slide bed plate.

2. The turnout roller device according to claim 1, characterized in that: The rolling body (300) comprises a rolling working part (310) and a rolling shaft part (320); along the axial direction of the rolling body (300), both ends of the rolling working part (310) are connected to the rolling shaft part (320); the rolling shaft part (320) is plugged into the eccentric sleeve cavity (614); the rolling working part (310) is accommodated in the accommodating cavity (110); The axis of the rolling body (300), the axis of the rolling working part (310), and the axis of the rolling shaft part (320) are collinear; The minimum diameter of the rolling working portion (310) is greater than the diameter of the rolling shaft portion (320); Along the axial direction of the rolling body (300), the length of the rolling shaft portion (320) is greater than the depth of the eccentric sleeve cavity (614), and the length of the second eccentric sleeve portion (612) is greater than the depth of the shaft sleeve matching hole (120); Dimension a is greater than dimension b so that the end face of the rolling shaft portion (320) is spaced apart from the bottom of the eccentric sleeve cavity (614); wherein dimension a is the difference between the length of the rolling shaft portion (320) and the depth of the eccentric sleeve cavity (614), and dimension b is the difference between the length of the second eccentric sleeve portion (612) and the depth of the shaft sleeve fitting hole (120).

3. The turnout roller device according to claim 2, characterized in that: The first shaft sleeve assembly (400) and the second shaft sleeve assembly (500) both comprise a wear-resistant sleeve (630); the wear-resistant sleeve (630) is connected between the eccentric sleeve (610) and the rolling shaft portion (320); the wear resistance of the wear-resistant sleeve (630) is stronger than the wear resistance of the eccentric sleeve (610); The outer wall of the wear-resistant sleeve (630) is coaxially arranged with the inner hole; The wear-resistant sleeve (630) has a notch (631) extending along its axial direction and open at both ends, and the notch (631) penetrates the outer wall and inner hole of the wear-resistant sleeve (630); The number of the wear-resistant sleeves (630) is at least two, and the notches (631) of all the wear-resistant sleeves (630) are arranged in different lines.

4. The turnout roller device according to claim 3, characterized in that: The first shaft sleeve assembly (400) and the second shaft sleeve assembly (500) both include a sealing member (620); the eccentric sleeve (610) further includes a sealing cavity (615) in communication with the eccentric sleeve cavity (614); the sealing member (620) is disposed on the rolling shaft portion (320) and is accommodated in the sealing cavity (615); the sealing cavity (615) is open at one end of the third eccentric sleeve portion (613) away from the first eccentric sleeve portion (611); The sealing cavity (615) is located in the third eccentric sleeve portion (613), and the eccentric sleeve cavity (614) is located in the third eccentric sleeve portion (613) and at least a portion of the second eccentric sleeve portion (612); The outer peripheral wall of the first eccentric sleeve portion (611), the outer peripheral wall of the second eccentric sleeve portion (612) and the outer peripheral wall of the third eccentric sleeve portion (613) are coaxially arranged; The axis of the sealing element (620) is colinear with the axis of the rolling element (300); The sealing element (620) is a lip-shaped sealing ring; The roller surface of the rolling working part (310) is in the shape of an arc surface.

5. The turnout roller device according to claim 1, characterized in that: A rotation limit stopper (617) is provided on the outer peripheral wall of the second eccentric sleeve portion (612), and the rotation limit stopper (617) is fixedly connected to the first eccentric sleeve portion (611); The cross section of the rotation limit stopper (617) is in the shape of a sector ring, and the center of the sector ring is located on the axis of the outer peripheral wall of the second eccentric sleeve portion (612); The first bracket (100) and / or the second bracket (200) is provided with a rotation limit groove (130) for accommodating the rotation limit stop (617).

6. The turnout roller device according to claim 5, characterized in that: The rotation limit stop (617) is configured to rotate within the rotation limit groove (130) within a range of 0-180°; The first bracket (100) is located above the second bracket (200); the rotation limiting groove (130) is arranged on the end surfaces of the first bracket (100) and the second bracket (200); the volume of the rotation limiting groove (130) on the first bracket (100) is smaller than the volume of the rotation limiting groove (130) on the second bracket (200); along the circumferential extension direction of the rotation limiting groove (130), the heights of the two ends of the rotation limiting groove (130) are different; The outer peripheral wall of the first eccentric sleeve portion (611) is provided with a scale structure (618) for displaying the rotation angle of the rotation limit stop (617); the scale structure (618) is a groove or a protrusion.

7. The turnout roller device according to claim 1, characterized in that: The operating portion (616) is non-cylindrical in shape.

8. The turnout roller device according to claim 7, characterized in that: The operating portion (616) is in the shape of a triangular column, a rectangular column or a hexagonal column; The anti-slip structure is processed by knurling technology.

9. The turnout roller device according to claim 1, characterized in that: Along an axial direction perpendicular to the rolling body (300), the accommodating cavity (110) is provided with an accommodating cavity opening (111) at both the end of the first bracket (100) and the end of the second bracket (200); along an axial direction perpendicular to the rolling body (300), the switch roller device is provided with two shaft sleeve matching holes (120); the axis height of the shaft sleeve matching hole (120) close to the accommodating cavity opening (111) is higher than the axis height of the shaft sleeve matching hole (120) far from the accommodating cavity opening (111); wherein the axis height refers to the distance between the axis and the surface of the second bracket (200) facing away from the first bracket (100), and the axis of the shaft sleeve matching hole (120) is collinear with the axis of the eccentric sleeve (610); The fastener (150) passes through the mounting holes (140) of the first bracket (100) and the second bracket (200), and can be threadedly connected to the fastening nut (700); The cross section of the mounting hole (140) is an oblong shape.

10. A turnout switch, characterized in that: comprising a plurality of turnout roller devices according to any one of claims 1 to 9; At least part of the switch roller device includes one roller assembly, and at least part of the switch roller device includes two roller assemblies.

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