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 body, a first bushing assembly, and a second bushing assembly; the first bushing assembly and the second bushing assembly are sleeved at both ends of the rolling body to form a roller assembly; the first bracket and the second bracket are cooperatively connected to form a bushing fitting hole and a receiving cavity; both the first bushing assembly and the second bushing assembly adopt eccentric bushing assemblies; the axis of the eccentric bushing assembly is not collinear with the axis of the rolling body; the eccentric bushing assembly can rotate and adjust around its own axis, so that the rolling body rotates synchronously with the eccentric bushing assembly, thereby causing part of the rolling body to protrude 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 present invention relates to the technical field of railways, and more specifically, to a switch roller device and a switch point. Background Art

[0002] The switch roller device is a key component in the railway switch system, usually assembled on the roller slide plate under the switch point of the railway switch, so as to reduce the sliding friction between the switch point and the roller slide plate when the switch point moves, and ensure a smooth conversion process.

[0003] In practical applications, the switch roller device needs to be regularly maintained and inspected to ensure its stable performance, so that the contact state between the switch point and the roller slide plate is in the best working condition. Among them, the height of the switch roller device is one of the important links in maintenance and inspection. For example, factors such as the long-term use of the track, long-term vibration, impact, and seasonal temperature fluctuations may cause the height of the switch roller device to change, and regular maintenance and height adjustment are required.

[0004] Traditional switch roller devices usually adopt a fixed structure. According to the survey results of different working conditions, roller height adjustment shims with corresponding heights are prepared, and the height of the roller is adjusted by replacing different specifications of roller height adjustment shims; when replacing or adding roller height adjustment shims, it is often necessary to disassemble the entire switch roller device, and its replacement process is cumbersome and requires professional operation, and rapid adjustment cannot be achieved. Summary of the Invention

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

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A switch roller device includes a first bracket, a second bracket, a rolling element, a first bushing assembly, and a second bushing assembly;

[0008] 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; along the direction perpendicular to the axial direction of the rolling element, the first bracket is connected to at least one of the roller assemblies;

[0009] The first bracket and the second bracket are cooperatively connected to form a bushing fitting hole for accommodating at least part of the first bushing assembly and at least part of the second bushing assembly, and form a receiving cavity for accommodating the rolling element;

[0010] Both the first bushing assembly and the second bushing assembly adopt eccentric bushing assemblies; the axis of the eccentric bushing assembly is not collinear with the axis of the rolling element; the eccentric bushing assembly is configured to be rotatably adjustable about its own axis, so that the rolling element rotates synchronously with the eccentric bushing assembly, thereby causing some of the rolling elements to protrude from the surface of the first bracket facing away from the second bracket.

[0011] In a possible implementation manner, the ends of the first bracket and the ends of the second bracket both include bracket stop portions; the inner surface of the bracket stop portion is adjacent to the bushing fitting hole;

[0012] The rolling element includes a rolling working portion and a rolling shaft portion; along the axial direction of the rolling element, both ends of the rolling working portion are fixedly connected with the rolling shaft portion; the rolling working portion is accommodated in the accommodation cavity;

[0013] The eccentric bushing assembly includes an eccentric bushing; the eccentric bushing includes a sleeve main body portion, a sleeve neck portion and an operation portion fixedly connected in sequence along its own axial direction; the sleeve main body portion has an eccentric bushing cavity for inserting the rolling shaft portion; the axis of the eccentric bushing cavity is collinear with the axis of the rolling element; the axis of the eccentric bushing assembly is the axis of the outer peripheral wall of the sleeve main body portion;

[0014] The sleeve main body portion is accommodated in the bushing fitting hole; the bracket stop portion is located between the sleeve main body portion and the operation portion, and the bracket stop portion has a bracket through hole for the sleeve neck portion to pass through; the outer diameter of the sleeve main body portion and the outer diameter of the operation portion are both larger than the diameter of the bracket through hole.

[0015] In a possible implementation manner, along the axial direction of the rolling element, the length of the rolling shaft portion is greater than the depth of the eccentric bushing cavity, the length of the sleeve neck portion is greater than the thickness of the bracket stop portion, and the depth of the bushing fitting hole is greater than the length of the sleeve main body portion;

[0016] Let (a - c) > b, so that the end face of the rolling shaft portion is spaced from the bottom of the eccentric bushing cavity; where a is the difference between the length of the rolling shaft portion and the depth of the eccentric bushing cavity, b is the difference between the length of the sleeve neck portion and the thickness of the bracket stop portion, and c is the difference between the depth of the bushing fitting hole and the length of the sleeve main body portion.

[0017] In a possible implementation manner, the operation portion is detachably connected with a limit stop; the limit stop extends along a direction parallel to the axis of the eccentric bushing assembly; along the radial direction of the eccentric bushing assembly, at least part of the limit stop is located outside the sleeve neck portion;

[0018] The bracket stop portion is provided with a rotation limit groove for avoiding the limit stop member; the limit stop member is configured to rotate within the rotation limit groove to limit the rotation angle of the operating portion.

[0019] In a possible implementation manner, the sleeve main body portion is provided with a through hole for accommodating part of the limit stop member; the limit stop member has a stop member cavity communicating with the eccentric sleeve cavity, the stop member cavity extends along the extending direction of the limit stop member and has openings at both ends; a filter element is filled in the stop member cavity; the limit stop member includes an elastic cylindrical pin;

[0020] The eccentric sleeve assembly includes a seal member sleeved on the rolling shaft portion; the sleeve main body portion is provided with a seal groove for accommodating the seal member; the opening of the seal groove faces the eccentric sleeve cavity;

[0021] The axis of the seal member is collinear with the axis of the rolling element; the seal member is an annular seal ring.

[0022] In a possible implementation manner, the cross-section of the rotation limit groove is annular, and the limit stop member is configured to rotate within the rotation limit groove within an angle range of 0 - 180°;

[0023] The first bracket is located above the second bracket, and the rotation limit groove is provided on the bracket stop portion of the first bracket and the bracket stop portion of the second bracket; along the circumferential extension direction of the rotation limit groove, the rotation limit groove has openings at both ends of the second bracket; along the circumferential extension direction of the rotation limit groove, the heights of both ends of the rotation limit groove on the first bracket are the same;

[0024] The outer peripheral wall of the operating portion is provided with a scale structure for displaying the rotation angle of the limit stop member; the scale structure is a groove or a protrusion.

[0025] In a possible implementation manner, the eccentric sleeve assembly includes a wear-resistant sleeve; the wear-resistant sleeve is connected between the sleeve main body portion and the rolling shaft portion; the wear-resistant performance of the wear-resistant sleeve is stronger than that of the sleeve main body portion;

[0026] The outer wall and the inner hole of the wear-resistant sleeve are coaxially arranged;

[0027] The wear-resistant sleeve has a notch extending along its own axial direction and having openings at both ends, and the notch penetrates through the outer wall and the inner hole of the wear-resistant sleeve;

[0028] The number of the wear-resistant sleeves is at least two, and the notches of all the wear-resistant sleeves are arranged non-collinearly.

[0029] In a possible implementation, the outer peripheral walls of the sleeve main body portion, the sleeve neck portion, and the operation portion are coaxially arranged;

[0030] The axes of the rolling elements are collinear with the axis of the rolling working portion and the axis of the rolling shaft portion respectively;

[0031] The minimum diameter of the rolling working portion is greater than the diameter of the rolling shaft portion;

[0032] The rolling shaft portion is configured to rotate synchronously with the sleeve main body portion around the axis of the eccentric sleeve assembly, so that part of the rolling working portion protrudes from the surface of the first bracket facing away from the second bracket;

[0033] The rolling working portion is in the shape of a rectangular prism;

[0034] The shape of the operation portion is non-cylindrical; the non-cylindrical shape includes a triangular prism, a rectangular prism or a hexagonal prism;

[0035] At least part of the outer surface of the sleeve main body portion is provided with an anti-slip structure; the anti-slip structure is processed by a knurling process.

[0036] In a possible implementation, along the axial direction perpendicular to the rolling element, accommodation cavity openings are provided at both the end of the first bracket and the end of the second bracket of the accommodation cavity; along the axial direction perpendicular to the rolling element, two shaft sleeve fitting holes are provided in the switch roller device; the axes of the two shaft sleeve fitting holes are at the same height; wherein, the axis height refers to the distance between the axis and the surface of the second bracket facing away from the first bracket, and the axis of the shaft sleeve fitting hole is collinear with the axis of the eccentric sleeve assembly;

[0037] Both the first bracket and the second bracket are provided with mounting holes, and fasteners pass through the mounting holes of the first bracket and the second bracket and can be screwed with a fastening nut;

[0038] The cross-section of the mounting hole is oblong.

[0039] A switch, comprising a plurality of the above-mentioned switch roller devices;

[0040] At least part of the switch roller devices include one roller assembly, and at least part of the switch roller devices include two roller assemblies.

[0041] The beneficial effects of the present invention mainly lie in:

[0042] 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. By using eccentric bushing assemblies for both the first bushing assembly and the second bushing assembly, when adjusting the height of the rolling elements, the height of the rolling elements can be quickly adjusted by rotating the eccentric bushing assemblies to make some of the rolling elements protrude from the surface of the first bracket facing away from the second bracket, 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 elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. 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, other related drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 Structural schematic diagram of the switch roller device provided by the embodiment of the present invention (double rollers);

[0045] Figure 2 For Figure 1 The front view of the switch roller device shown;

[0046] Figure 3 For Figure 2 The A-A sectional view of the switch roller device shown;

[0047] Figure 4 For Figure 2 The bottom view of the switch roller device shown;

[0048] Figure 5 For Figure 4 The B-B sectional view of the switch roller device shown;

[0049] Figure 6 For Figure 5 The partial enlarged view of the switch roller device shown;

[0050] Figure 7 Another structural schematic diagram of the switch roller device provided by the embodiment of the present invention (single roller);

[0051] Figure 8 Structural schematic diagram of the eccentric bushing assembly provided by the embodiment of the present invention;

[0052] Figure 9 The front view of the eccentric bushing assembly provided by the embodiment of the present invention;

[0053] Figure 10 is Figure 9 the sectional view taken along the C-C direction of the eccentric sleeve assembly shown;

[0054] Figure 11 is Figure 9 the left view of the eccentric sleeve assembly shown;

[0055] Figures 12 - 14 are the structural schematic diagrams of the eccentric sleeve from three perspectives provided by the embodiment of the present invention;

[0056] Figure 15 is Figure 14 the sectional view taken along the D-D direction of the eccentric sleeve shown;

[0057] Figure 16 is Figure 14 the sectional view taken along the E-E direction of the eccentric sleeve shown;

[0058] Figure 17 is the structural schematic diagram of the wear-resistant sleeve provided by the embodiment of the present invention;

[0059] Figure 18 is the structural schematic diagram of the upper bracket provided by the embodiment of the present invention;

[0060] Figure 19 is the front view of the upper bracket provided by the embodiment of the present invention;

[0061] Figure 20 is Figure 19 the top view of the upper bracket shown;

[0062] Figure 21 is the structural schematic diagram of the lower bracket provided by the embodiment of the present invention;

[0063] Figure 22 is the front view of the lower bracket provided by the embodiment of the present invention;

[0064] Figure 23 is Figure 22 the top view of the lower bracket shown;

[0065] Figure 24 is Figure 22 the sectional view taken along the F-F direction of the lower bracket shown;

[0066] Figure 25 and Figure 26 is the structural schematic diagram of the rolling element provided by the embodiment of the present invention.

[0067] Icons: 100 - First bracket; 110 - Accommodating cavity; 111 - Opening of the accommodating cavity; 120 - Bushing fitting hole; 130 - Rotation limiting groove; 140 - Mounting hole; 150 - Fastener; 160 - Bracket stop; 161 - Bracket through hole; 200 - Second bracket; 300 - Rolling element; 310 - Rolling working part; 320 - Rolling shaft part; 400 - First bushing assembly; 500 - Second bushing assembly;

[0068] 600 - Eccentric sleeve assembly; 610 - Eccentric sleeve; 611 - Sleeve main body part; 612 - Sleeve neck part; 614 - Eccentric sleeve cavity; 615 - Sealing groove; 616 - Operating part; 617 - Limiting stop; 618 - Scale structure; 619 - Filter element; 620 - Sealing element; 630 - Wear-resistant sleeve; 631 - Notch; 700 - Fastening nut. Detailed implementation

[0069] 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 in conjunction with 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.

[0070] 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.

[0071] 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.

[0072] 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 invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0073] 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.

[0074] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" 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.

[0075] 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.

[0076] The switch roller device is usually assembled on the roller slide plate under the switch rail of the railway switch, that is, the switch roller device is usually located between the switch rail and the roller slide plate.

[0077] Embodiment

[0078] This embodiment provides a switch roller device and a switch, 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.

[0079] See Figures 1 - 26 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.

[0080] 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 1 - 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.

[0081] The first bracket 100 is cooperatively connected with the second bracket 200, and a bushing fitting hole 120 for accommodating at least part of the first bushing assembly 400 and at least part of the second bushing assembly 500 is formed, and a receiving cavity 110 for accommodating the rolling elements 300 is formed.

[0082] Both the first bushing assembly 400 and the second bushing assembly 500 adopt eccentric bushing assemblies 600; the axis of the eccentric bushing assembly 600 is not collinear with the axis of the rolling elements 300; the eccentric bushing assembly 600 is configured to be able to rotate and adjust around its own axis, so that the rolling elements 300 rotate synchronously with the eccentric bushing assembly 600, so that part of the rolling elements 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200. That is, the rolling elements 300 rotate synchronously with the eccentric bushing assembly 600 around the axis of the eccentric bushing assembly 600, so that part 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 eccentric bushing assembly 600 can be rotated and adjusted so that part of the rolling elements 300 reach a preset height, so as to adapt to different working conditions; wherein, 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.

[0083] In the turnout roller device of this embodiment, it includes a first bracket 100, a second bracket 200, rolling elements 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 elements 300 to form a roller assembly; by both the first bushing assembly 400 and the second bushing assembly 500 adopting eccentric bushing assemblies 600, when adjusting the height of the rolling elements 300, the eccentric bushing assembly 600 can be rotated so that part of the rolling elements 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200, so as to realize the rapid adjustment of the height of the rolling elements 300, and it can effectively avoid the operation of disassembling the entire turnout roller device due to the need to replace roller height adjustment pieces of different specifications in the prior art, and effectively improve the efficiency of adjusting the height of the rolling elements 300.

[0084] See Figure 5 、 Figure 6 、 Figures 18 - 22 As shown in

[0085] Such as Figure 25 and Figure 26As shown, optionally, the rolling element 300 includes a rolling working portion 310 and a rolling shaft portion 320; along the axial direction of the rolling element 300, both ends of the rolling working portion 310 are fixedly connected with the rolling shaft portion 320; the rolling working portion 310 is received in the receiving cavity 110; optionally, the rolling element 300 is an axisymmetric structure; optionally, the two rolling shaft portions 320 are symmetrically arranged on both sides of the rolling working portion 310. Optionally, the rolling working portion 310 and the rolling shaft portion 320 are integrally formed.

[0086] Optionally, the axis of the rolling element 300 is collinear with the axis of the rolling working portion 310 and the axis of the rolling shaft portion 320 respectively.

[0087] Optionally, the minimum diameter of the rolling working portion 310 is greater than the diameter of the rolling shaft portion 320; during the switchover process of the switch, the rolling working portion 310 supports and connects the switch rail to move smoothly.

[0088] Optionally, the rolling shaft portion 320 is configured to rotate synchronously with the sleeve main body portion 611 around the axis of the eccentric sleeve assembly 600, so that a part of the rolling working portion 310 protrudes from the surface of the first bracket 100 facing away from the second bracket 200, thereby realizing a rapid adjustment of the height of the rolling element 300, which is beneficial to the smooth movement of the rolling working portion 310 in supporting and connecting the switch rail.

[0089] Optionally, the rolling working portion 310 is in the shape of a rectangular prism.

[0090] As Figures 8 - 16 shown, optionally, the eccentric sleeve assembly 600 includes an eccentric sleeve 610; the eccentric sleeve 610 includes a sleeve main body portion 611, a sleeve neck portion 612 and an operating portion 616 fixedly connected in sequence along its own axial direction; the outer diameter of the sleeve neck portion 612 is smaller than the outer diameter of the sleeve main body portion 611 and the outer diameter of the operating portion 616 respectively; the sleeve main body portion 611 has an eccentric sleeve cavity 614 for inserting the rolling shaft portion 320; the axis of the eccentric sleeve cavity 614 is collinear with the axis of the rolling element 300; the axis of the eccentric sleeve assembly 600 is the axis of the outer peripheral wall of the sleeve main body portion 611; that is, the axis of the eccentric sleeve cavity 614 is not collinear with the axis of the eccentric sleeve assembly 600.

[0091] Optionally, the outer peripheral walls of the sleeve main body portion 611, the sleeve neck portion 612 and the operating portion 616 are coaxially arranged; that is, the axes of the outer peripheral walls of the sleeve main body portion 611, the sleeve neck portion 612 and the operating portion 616 are the axis of the eccentric sleeve assembly 600. Optionally, the axis of the eccentric sleeve 610 is collinearly arranged with the axis of the eccentric sleeve assembly 600.

[0092] As Figures 5 - 7As shown, optionally, the sleeve main body 611 is received within the bushing fitting hole 120; the bracket stop portion 160 is located between the sleeve main body 611 and the operating portion 616, and the bracket stop portion 160 has a bracket through hole 161 for the sleeve neck 612 to pass through, that is, the operating portion 616 is located outside the first bracket 100 and the second bracket 200. Optionally, the outer diameter of the sleeve main body 611 and the outer diameter of the operating portion 616 are both greater than the diameter of the bracket through hole 161.

[0093] For the switch roller device described in this embodiment, through the bracket stop portion 160 and the bushing fitting hole 120 of the first bracket 100 and the second bracket 200, it is convenient to install the sleeve main body 611, that is, it is convenient to install the eccentric sleeve 610, and the eccentric sleeve assembly 600 is connected to both ends of the rolling element 300, effectively improving the stability of the rolling element 300 during rolling, and further improving the working stability of the switch roller device. This structure is also beneficial to improving the supporting force of the first bracket 100 and the second bracket 200 on the rolling element 300.

[0094] In this embodiment, the bracket through hole 161 of the first bracket 100 and the bracket through hole 161 of the second bracket 200 form a circular hole or a shape similar to a circular hole to accommodate the sleeve neck 612.

[0095] Optionally, the shape of the operating portion 616 is non-cylindrical, or other shapes; optionally, the non-cylindrical shapes include triangular prism, rectangular prism or hexagonal prism, or other shapes. By the shape of the operating portion 616 being non-cylindrical, the tool can better drive the operating portion 616 to rotate, and then drive the eccentric sleeve 610 to rotate to adjust the roller surface height of the rolling element 300.

[0096] Optionally, at least part of the outer surface of the sleeve main body 611 is provided with an anti-slip structure to increase the friction coefficient between the sleeve main body 611 and the first bracket 100 / second bracket 200 to a certain extent, that is, to increase the friction coefficient between the eccentric sleeve 610 and the first bracket 100 / second bracket 200, which helps to improve the accuracy of the eccentric sleeve assembly 600 rotating and adjusting around its own axis, thereby improving the adjustment accuracy of the roller surface height of the rolling element 300. The anti-slip structure described in this embodiment can greatly increase the static friction force between the first bracket 100 / second bracket 200 and the eccentric sleeve 610 after the switch 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.

[0097] Optionally, the anti-slip structure is processed by knurling process, or the anti-slip structure is processed by other processes.

[0098] See Figure 5 and Figure 6As shown, in an alternative solution of this embodiment, along the axial direction of the rolling element 300, the length of the rolling shaft portion 320 is greater than the depth of the eccentric sleeve cavity 614, so as to ensure that there is a gap between the end face of the rolling working portion 310 and the end face of the sleeve main body portion 611 (in order to better show the gap, compared with Figure 5 , Figure 6 , in which part of the structure is hidden in the illustrated part between the end face of the rolling working portion 310 and the end face of the sleeve main body portion 611), and further there is a gap between the rolling working portion 310 and the eccentric sleeve 610, effectively avoiding the generation of frictional force between the end face of the rolling working portion 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.

[0099] See Figure 5 and Figure 6 As shown, in an alternative solution of this embodiment, along the axial direction of the rolling element 300, the length of the sleeve neck portion 612 is greater than the thickness of the bracket stop portion 160, that is, at least one of the sleeve main body portion 611 and the operating portion 616 is spaced apart from the first bracket 100 and the second bracket 200.

[0100] See Figure 5 and Figure 6 As shown, in an alternative solution of this embodiment, along the axial direction of the rolling element 300, the depth of the bushing mating hole 120 is greater than the length of the sleeve main body portion 611; to ensure that there is a gap between the corresponding end faces of the first bracket 100 and the second bracket 200 and the end face of the rolling working portion 310, effectively avoiding the generation of frictional force between the first bracket 100 and the second bracket 200 and the end face of the rolling working portion 310 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.

[0101] See Figure 5 and Figure 6 As shown, in an alternative solution of this embodiment, let (a - c) > b, so that the end face of the rolling shaft portion 320 is spaced apart from the bottom of the eccentric sleeve cavity 614, that is, there is a gap d between the end face of the rolling shaft portion 320 and the bottom of the eccentric sleeve cavity 614 (such as Figure 6(as shown in the figure); where a is the difference between the length of the rolling shaft portion 320 and the depth of the eccentric sleeve cavity 614, b is the difference between the length of the sleeve neck portion 612 and the thickness of the bracket stop portion 160, and c is the difference between the depth of the bushing mating hole 120 and the length of the sleeve main body portion 611. By making (a - c) greater than 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 thus there is a gap between the end face of the rolling shaft portion 320 and the corresponding end faces of the eccentric sleeve 610, the first bracket 100, and the second bracket 200. This effectively avoids the generation of frictional force between the end face of the rolling shaft portion 320 and the corresponding end faces of the eccentric sleeve 610, the first bracket 100, and the second bracket 200 when the rolling elements 300 roll, thereby effectively ensuring the normal rolling of the rolling elements 300 and effectively extending the service life of the rolling elements 300.

[0102] In this embodiment, the sleeve main body portion 611 is received in the bushing mating hole 120. Usually, the corresponding end face of the eccentric sleeve 610 is located in the bushing mating hole 120 and does not directly contact the end face of the rolling shaft portion 320.

[0103] See Figures 8 - 11 As shown in the figure, in an alternative solution of this embodiment, the operating portion 616 is detachably connected with a limiting stop member 617; the limiting stop member 617 extends along a direction parallel to the axis of the eccentric sleeve assembly 600; in the radial direction of the eccentric sleeve assembly 600, at least a part of the limiting stop member 617 is located outside the sleeve neck portion 612; the bracket stop portion 160 is provided with a rotation limiting groove 130 for avoiding the limiting stop member 617; the limiting stop member 617 is configured to rotate in the rotation limiting groove 130 to limit the rotation angle of the operating portion 616. By the cooperation of the bracket stop portion 160 and the rotation limiting groove 130, the rotation angle of the operating portion 616 is limited, that is, the rotation adjustment angle of the eccentric sleeve 610 around the axis of the eccentric sleeve assembly 600 is limited, so that the rotation adjustment of the eccentric sleeve assembly 600 is more accurate, and thus it is beneficial to the height adjustment of the rolling elements 300.

[0104] See Figures 8 - 16 As shown in the figure, in an alternative solution of this embodiment, the sleeve main body portion 611 is provided with a through hole (such as Figure 16 shown) for receiving a part of the limiting stop member 617; the limiting stop member 617 has a stop member cavity communicating with the eccentric sleeve cavity 614, and the stop member cavity extends along the extending direction of the limiting stop member 617 and has openings at both ends; by the communication between the stop member cavity of the limiting stop member 617 and the eccentric sleeve cavity 614 of the sleeve main body portion 611, when the rolling elements 300 and the eccentric sleeve assembly 600 are assembled, specifically when the rolling shaft portion 320 and the eccentric sleeve 610 are assembled, the gas in the eccentric sleeve cavity 614 can be discharged through the stop member cavity, so that the air pressure inside and outside the eccentric sleeve cavity 614 is basically the same, which is beneficial to the assembly between the rolling elements 300 and the eccentric sleeve assembly 600.

[0105] Optionally, the stop cavity is filled with a filter member 619; optionally, the filter member 619 is made of an air filter material or other materials. Through the filter member 619, foreign matters such as dust and insects can be prevented from entering the eccentric sleeve cavity 614, and the gas in the eccentric sleeve cavity 614 can be discharged.

[0106] Optionally, the limit stop member 617 includes an elastic cylindrical pin or other structural members.

[0107] See Figures 8 - 16 As shown, optionally, the eccentric sleeve assembly 600 includes a seal member 620 sleeved on the rolling shaft portion 320; the sleeve main body portion 611 is provided with a seal groove 615 for accommodating the seal member 620; the opening of the seal groove 615 faces the eccentric sleeve cavity 614; through the seal member 620, foreign matters such as dust can be prevented from entering the eccentric sleeve cavity 614; through the seal groove 615, the seal member 620 can be accommodated to facilitate the installation of the seal member 620 on the sleeve main body portion 611.

[0108] Optionally, the axis of the seal member 620 is collinear with the axis of the rolling element 300.

[0109] Optionally, the seal member 620 is an annular sealing ring or other shaped sealing rings.

[0110] See Figure 3 As shown, in an optional solution of this embodiment, the cross-section of the rotation limit groove 130 is annular, and the limit stop member 617 is configured to rotate within an angle range of 0-180° in the rotation limit groove 130; in this embodiment, the center of the circle corresponding to the annulus of the rotation limit groove 130 is located on the axis of the eccentric sleeve assembly 600. By setting the rotation angle range of the limit stop member 617 to 0-180°, the rotation accuracy of the limit stop member 617 can be improved, and further the rotation adjustment accuracy of the eccentric sleeve 610 around the axis of the eccentric sleeve assembly 600 can be improved, thereby improving the height adjustment accuracy of the rolling element 300.

[0111] Optionally, the first bracket 100 is located above the second bracket 200, and the rotation limit groove 130 is provided on the bracket stop portion 160 of the first bracket 100 and the bracket stop portion 160 of 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.

[0112] Optionally, along the circumferential extension direction of the rotation limit groove 130, the rotation limit groove 130 is open at both ends of the second bracket 200, that is, both ends of the rotation limit groove 130 in the circumferential direction extend to the first bracket 100, so as to simplify the structure of the second bracket 200 and facilitate the production and processing of the rotation limit groove 130.

[0113] Optionally, along the circumferential extension direction of the rotation limiting groove 130, the heights of both ends of the rotation limiting groove 130 on the first bracket 100 may be the same or different; optionally, along the circumferential extension direction of the rotation limiting groove 130, the heights of both ends of the rotation limiting groove 130 on the first bracket 100 are the same, so as to simplify the structure of the first bracket 100 and facilitate the production and processing of the rotation limiting groove 130.

[0114] Optionally, as Figures 9 - 13 shown, a scale structure 618 for displaying the rotation angle of the limit stopper 617 is provided on the outer peripheral wall of the operation portion 616; 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 precision of the limit stopper 617, and further improve the rotation adjustment precision of the eccentric sleeve 610 around the axis of the eccentric sleeve assembly 600, thereby improving the height adjustment precision of the rolling element 300, and ensuring the accuracy and repeatability of the adjustment.

[0115] See Figures 8 - 11 、 Figure 17 shown, in an alternative solution of this embodiment, the eccentric sleeve assembly 600 includes a wear-resistant sleeve 630; the wear-resistant sleeve 630 is connected between the sleeve main body portion 611 and the rolling shaft portion 320; the wear resistance of the wear-resistant sleeve 630 is stronger than that of the sleeve main body portion 611; through the wear-resistant sleeve 630, the wear resistance of the first bushing assembly 400 and the second bushing assembly 500 is improved.

[0116] Optionally, the outer wall and the inner hole of the wear-resistant sleeve 630 are coaxially arranged.

[0117] 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 is helpful to improve the elasticity of the wear-resistant sleeve 630 and facilitate the installation of 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.

[0118] Optionally, the wear-resistant sleeve 630 is in interference fit with the eccentric sleeve 610.

[0119] Optionally, 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 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. As Figure 8 and Figure 9 shown, the included angle between the notches 631 of the two wear-resistant sleeves 630 is 180°.

[0120] See Figure 1 、 Figure 2 andFigure 7 As shown, in an alternative solution of this embodiment, along the axis perpendicular to the rolling elements 300, accommodation openings 111 are provided at the ends of the first bracket 100 and the second bracket 200 of the accommodation cavity 110.

[0121] Optionally, along the axis perpendicular to the rolling elements 300, the turnout roller device is provided with two bushing mating holes 120; in this embodiment, the axis heights of the two bushing mating holes 120 may be the same or different. Optionally, the axis heights of the two bushing mating holes 120 are the same to simplify the structure of the turnout roller device and facilitate the production and processing of the turnout roller device; 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 mating hole 120 is collinear with the axis of the eccentric sleeve assembly 600. In this embodiment, along the axis perpendicular to the rolling elements 300, the heights of the two rolling elements 300 respectively corresponding to the two bushing mating holes 120 can be adjusted by rotating the eccentric sleeve assembly 600.

[0122] See Figures 1 - 4 、 Figures 18 - 24 As shown, optionally, both the first bracket 100 and the second bracket 200 are provided with mounting holes 140, and the fasteners 150 pass through the mounting holes 140 of the first bracket 100 and the second bracket 200 and can be screwed with the fastening nuts 700; through the mounting holes 140 and the fasteners 150, the turnout roller device can be mounted on the roller slide plate; through the fasteners 150 and the fastening nuts 700, the turnout roller device is formed into a whole, which helps with the packaging, transportation, transfer, etc. of the turnout roller device.

[0123] Optionally, the cross-section of the mounting hole 140 is oblong or other shapes to help the fasteners 150 mount the turnout roller device on the roller slide plate.

[0124] For the turnout 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 the axis of the eccentric sleeve assembly 600. For example, according to the working conditions of different turnouts, a height adjustment wrench is used to rotate the eccentric sleeves 610 of the first bushing assembly 400 and the second bushing assembly 500, thereby driving the corresponding rolling elements 300 to move up and down to adjust the axis of the rolling elements 300 to a suitable height, that is, when the height of the rolling working part 310 of the rolling elements 300 reaches the theoretical value, the rapid adjustment of the rolling elements 300 can be achieved. Then, the fasteners 150 are passed through the mounting holes 140 of the first bracket 100 and the second bracket 200 and are threadedly fixed to the threaded holes of the roller slide plate, and a locking wrench is used to lock the fasteners 150 to fix the turnout roller device on the roller slide plate.

[0125] The switch roller device described in this embodiment has the following advantages:

[0126] 1. Quick adjustment: By rotating the eccentric sleeve 610, the roller surface height of the rolling elements 300 can be quickly adjusted without replacing the height adjustment shims, greatly shortening the maintenance time.

[0127] 2. Precise control: The adjustment value can be accurately displayed through the scale structure 618 to ensure the accuracy and repeatability of the adjustment.

[0128] 3. Reduced maintenance cost: Since the adjustment process is simple and fast, the dependence on professional personnel is reduced, thereby reducing the maintenance cost.

[0129] 4. Effective improvement of safety: The ability to adjust quickly and precisely ensures the smoothness of the switch during the switching process, improving the safety of high-speed rail operation.

[0130] This embodiment also provides a switch point, which includes a plurality of the switch roller devices described in any of the above embodiments; at least some of the switch roller devices include a roller assembly (as Figure 7 shown that the switch roller device includes a roller assembly), and at least some of the switch roller devices include two roller assemblies ( Figures 1 - 4 shown that the switch roller device includes two roller assemblies).

[0131] The switch point described in this embodiment includes a switch roller device. The first bushing assembly 400 and the second bushing assembly 500 of the switch roller device are respectively sleeved at both ends of the rolling elements 300 to form a roller assembly; both the first bushing assembly 400 and the second bushing assembly 500 adopt an eccentric sleeve assembly 600. When adjusting the height of the rolling elements 300, the eccentric sleeve assembly 600 can be rotated to make some of the rolling elements 300 protrude from the surface of the first bracket 100 facing away from the second bracket 200, so as to realize the rapid adjustment of the height of the rolling elements 300, effectively avoiding the operation of disassembling the entire switch roller device due to the need to replace different specifications of roller height adjustment shims in the prior art, and effectively improving the efficiency of adjusting the height of the rolling elements 300.

[0132] 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 described repeatedly. The switch point described in this embodiment has the advantages of the above-mentioned switch roller device, and the advantages of the above-disclosed switch roller device will not be described repeatedly here.

[0133] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. 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 bracket (100) is connected in a mating manner with the second bracket (200), and forms a sleeve mating hole (120) for accommodating at least a portion of the first sleeve assembly (400) and at least a portion of the second sleeve assembly (500), and forms an accommodating cavity (110) for accommodating the rolling body (300); The first shaft sleeve assembly (400) and the second shaft sleeve assembly (500) both use an eccentric sleeve assembly (600); the axis of the eccentric sleeve assembly (600) is not colinear with the axis of the rolling body (300); the eccentric sleeve assembly (600) is configured to be rotatable and adjustable around its own axis, so that the rolling body (300) rotates synchronously with the eccentric sleeve assembly (600), so that part of the rolling body (300) protrudes from the surface of the first bracket (100) away from the second bracket (200), thereby realizing rapid adjustment of the height of the rolling body (300); The first bracket (100) and the second bracket (200) are both provided with mounting holes (140), and the 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 the threaded holes of the roller slide bed plate, so that the turnout roller device can be mounted on the roller slide bed plate; The end of the first bracket (100) and the end of the second bracket (200) both comprise a bracket stopper (160); the inner surface of the bracket stopper (160) is adjacent to the shaft sleeve matching hole (120); 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 fixedly connected to the rolling shaft part (320); the rolling working part (310) is accommodated in the accommodating cavity (110); The eccentric sleeve assembly (600) comprises an eccentric sleeve (610); the eccentric sleeve (610) comprises a sleeve main body (611), a sleeve neck (612) and an operating part (616) which are fixedly connected in sequence along the axial direction of the sleeve; the sleeve main body (611) has an eccentric sleeve cavity (614) for inserting the rolling shaft part (320); the axis of the eccentric sleeve cavity (614) is colinear with the axis of the rolling body (300); the axis of the eccentric sleeve assembly (600) is the axis of the outer peripheral wall of the sleeve main body (611); The sleeve main body (611) is accommodated in the shaft sleeve matching hole (120); the bracket stopper (160) is located between the sleeve main body (611) and the operating part (616), and the bracket stopper (160) has a bracket through hole (161) for the sleeve neck (612) to pass through; the outer diameter of the sleeve main body (611) and the outer diameter of the operating part (616) are both larger than the diameter of the bracket through hole (161).

2. The turnout roller device according to claim 1, characterized in that: 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), the length of the sleeve neck portion (612) is greater than the thickness of the bracket stop portion (160), and the depth of the shaft sleeve matching hole (120) is greater than the length of the sleeve body portion (611); Let (ac)>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 a is the difference between the length of the rolling shaft portion (320) and the depth of the eccentric sleeve cavity (614), b is the difference between the length of the sleeve neck (612) and the thickness of the bracket stop portion (160), and c is the difference between the depth of the sleeve fitting hole (120) and the length of the sleeve body portion (611).

3. The turnout roller device according to claim 1, characterized in that: The operating portion (616) is detachably connected to a limit stopper (617); the limit stopper (617) extends along an axis parallel to the eccentric sleeve assembly (600); along the radial direction of the eccentric sleeve assembly (600), at least a portion of the limit stopper (617) is located outside the sleeve neck (612); The bracket stop portion (160) is provided with a rotation limit groove (130) for avoiding the limit stop member (617); the limit stop member (617) is configured to rotate in the rotation limit groove (130) to limit the rotation angle of the operating portion (616).

4. The turnout roller device according to claim 3, characterized in that: The sleeve body (611) is provided with a through hole for accommodating part of the limit stopper (617); the limit stopper (617) has a stopper cavity connected to the eccentric sleeve cavity (614), the stopper cavity extends along the extension direction of the limit stopper (617) and is open at both ends; the stopper cavity is filled with a filter (619); the limit stopper (617) includes an elastic cylindrical pin; The eccentric sleeve assembly (600) comprises a sealing member (620) which is sleeved on the rolling shaft portion (320); the sleeve body portion (611) is provided with a sealing groove (615) for accommodating the sealing member (620); the opening of the sealing groove (615) faces the eccentric sleeve cavity (614); The axis of the sealing member (620) is colinear with the axis of the rolling body (300); and the sealing member (620) is an annular sealing ring.

5. The turnout roller device according to claim 3, characterized in that: The cross section of the rotation limiting groove (130) is annular, and the limit stopper (617) is configured to rotate within the rotation limiting groove (130) within an angle range of 0-180°; The first bracket (100) is located above the second bracket (200), and the rotation limiting groove (130) is arranged on the bracket stop portion (160) of the first bracket (100) and the bracket stop portion (160) of the second bracket (200); along the circumferential extension direction of the rotation limiting groove (130), the rotation limiting groove (130) is open at both ends of the second bracket (200), and the two ends of the rotation limiting groove (130) on the first bracket (100) have the same height; The outer peripheral wall of the operating portion (616) is provided with a scale structure (618) for displaying the rotation angle of the limit stopper (617); the scale structure (618) is a groove or a protrusion.

6. The turnout roller device according to claim 1, characterized in that: The eccentric sleeve assembly (600) comprises a wear-resistant sleeve (630); the wear-resistant sleeve (630) is connected between the sleeve main body (611) and the rolling shaft part (320); the wear-resistant performance of the wear-resistant sleeve (630) is stronger than the wear-resistant performance of the sleeve main body (611); 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 the 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.

7. The turnout roller device according to claim 1, characterized in that: The outer peripheral wall of the sleeve main body (611), the outer peripheral wall of the sleeve neck (612) and the outer peripheral wall of the operating portion (616) are coaxially arranged; The axis of the rolling body (300) is collinear with the axis of the rolling working part (310) and the axis of the rolling shaft part (320) respectively; The minimum diameter of the rolling working portion (310) is greater than the diameter of the rolling shaft portion (320); The rolling shaft portion (320) is configured to rotate synchronously with the sleeve body portion (611) around the axis of the eccentric sleeve assembly (600), so that a portion of the rolling working portion (310) protrudes from a surface of the first bracket (100) facing away from the second bracket (200); The rolling working portion (310) is in the shape of a rectangular column; The operating portion (616) is in a non-cylindrical shape; the non-cylindrical shape includes a triangular column, a rectangular column or a hexagonal column; At least part of the outer surface of the sleeve main body (611) is provided with an anti-slip structure; the anti-slip structure is manufactured by knurling technology.

8. 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 heights of the two shaft sleeve matching holes (120) are the same; 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 assembly (600); 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.

9. A turnout switch, characterized in that: comprising a plurality of turnout roller devices according to any one of claims 1 to 8; 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.

Images