Switch roller device
By combining the inner roller body with an eccentric structure and the outer roller body with a concentric structure, a continuous downhill support path is formed, which solves the problem of high resistance in the existing turnout roller device during the switch rail repulsion process, and realizes a low-energy consumption and high-efficiency conversion process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUZHOU CHINA RAILWAY ELECTRICAL MATERIALS CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-10
AI Technical Summary
The existing turnout roller device needs to overcome a large resistance during the switch rail separation process, resulting in high traction force and high energy consumption of the switch machine, and long-term operation is prone to equipment fatigue and wear.
The inner roller body has an eccentric structure, and the outer roller body has a concentric structure. The two are arranged side by side in the transverse direction. The height of the top generatrix of the inner roller body changes with the rotation angle, forming a continuous downhill support path. By adjusting the initial eccentric angle, the switch rail first contacts the inner roller body and slides along the downhill path when it is repelled. The height of the inner roller body gradually increases to be consistent with that of the outer roller body, ensuring that the switch rail follows the downhill trajectory during both repulsion and closure.
It reduces traction resistance during the repulsion and closure processes, decreases the load and energy consumption of the switch machine, and improves the stability and reliability of the system operation.
Smart Images
Figure CN224478351U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of railway turnout roller devices, specifically turnout roller devices. Background Technology
[0002] As a key switchable node in rail transit systems, railway turnouts directly affect the reliability of train operation through their operational safety and switching efficiency. To reduce the sliding resistance of the switch rail during the switching process, a roller device is often installed between the slide plate and the switch rail to provide low-friction support. Existing turnout roller devices mainly adopt two structural forms: concentric shaft structure and eccentric shaft structure.
[0003] Concentric shaft structures typically have a fixed height difference on the support frame. Through structural machining, a slope is created between the rollers and the slide plate, with the front lower than the back, providing some assistance during switch rail switching. Eccentric shaft structures, on the other hand, achieve a similar fixed height difference layout through eccentrically positioned rollers, with the eccentric angle adjusted during installation. A common feature of both types of structures is the formation of a unidirectional slope; that is, the switch rail is in a downhill state during closing and an uphill state during disengagement.
[0004] However, this fixed elevation difference layout has obvious technical defects. During the switch rail separation process, as the track profile gradually rises, it is necessary to overcome a large displacement resistance, resulting in high traction force and high energy consumption of the switch machine. Long-term operation can easily lead to equipment fatigue, wear, or even failure. Utility Model Content
[0005] This invention provides a turnout roller device to solve the technical problem that the switch machine has high traction force and high energy consumption because the switch rail needs to overcome a large resistance during the repulsion process.
[0006] According to one aspect of the present invention, a turnout roller device is provided, comprising a base, an inner roller body and an outer roller body respectively mounted on the base, wherein both the inner and outer roller bodies are arranged laterally, such that the top generatrices of the inner and outer roller bodies together form a support surface for supporting the switch rail; the outer roller body has a concentric structure, and the height of its top generatrice remains constant during rotation; the inner roller body has an eccentric structure, such that the height of its top generatrice changes with the rotation angle during rotation, and the highest point is higher than the top generatrice of the outer roller body, and the lowest point is lower than the top generatrice of the outer roller body.
[0007] Optionally, the highest and lowest points of the top generatrix of the inner roller body are aligned with the height difference of the top generatrix of the outer roller body.
[0008] Optionally, the base includes an upper support and a lower support. The upper support has at least two upper roller shaft grooves, and the lower support has a lower roller shaft groove corresponding to the upper roller shaft grooves. The upper roller shaft groove and the lower roller shaft groove are combined to form a roller groove for installing the inner roller body and the outer roller body.
[0009] Optionally, the inner roller body includes an inner roller shaft and an inner rolling outer ring sleeved on the inner roller shaft, with the inner hole and outer circle of the inner rolling outer ring being eccentrically aligned. The outer roller body includes an outer roller shaft and an outer rolling outer ring sleeved on the outer roller shaft, with the inner hole and outer circle of the outer rolling outer ring being coaxially aligned.
[0010] Optionally, the outer periphery of the inner rolling outer ring is provided with identification marks to indicate the highest and lowest points.
[0011] Optionally, both the inner and outer roller shafts are provided with a first positioning plane, and at least one of the upper and lower roller grooves has a second positioning plane formed on its inner wall that mates with the first positioning plane. The first and second positioning planes fit together to restrict the circumferential rotation of the inner and outer roller shafts.
[0012] Optionally, the first positioning plane is disposed on the side of the inner roller shaft and the outer roller shaft near the upper support, and the second positioning plane is disposed on the inner wall of the upper roller groove.
[0013] Optionally, bushings are provided between the inner roller shaft and the inner rolling outer ring, and between the outer roller shaft and the outer rolling outer ring.
[0014] Optionally, sealing skeletons are provided at both ends of the bushing.
[0015] Optionally, a height adjustment shim is provided on the side of the lower bracket away from the upper bracket.
[0016] In summary, this application includes at least one of the following beneficial technical effects:
[0017] In this invention, the inner roller body adopts an eccentric structure, while the outer roller body adopts a concentric structure. Both are arranged laterally side-by-side on one side of the switch rail, with their top generatrices forming the support surface of the switch rail. During installation, the initial eccentricity angle of the inner roller body is adjusted so that it is at its lowest eccentricity point when the switch rail is in the closed state. At this point, the height of the top generatrice of the inner roller body is at its lowest, lower than the support height of the outer roller body and the slide table. When the switch rail begins to disengage in the closed state, it first contacts the inner roller body and slides outward along a downhill path. Therefore, the traction force required to start the switch machine is smaller, which helps to reduce the starting torque of the equipment. During the disengagement process, the switch rail continues to maintain contact with the inner roller body, pushing it to rotate under friction. As the eccentric structure rotates, the height of the top generatrice of the inner roller body gradually increases. As the switch rail approaches the outer roller, the top generatrix height of the inner roller rises to match that of the outer roller. As it continues to move outward, the top generatrix height of the inner roller further increases and exceeds that of the outer roller, thus forming a continuous downhill support path from beginning to end. When the switch rail reaches its maximum travel and completes the repulsion state, the inner roller rotates to its highest eccentric point, and the switch rail completes the repulsion motion from the inside out, remaining in a downhill state throughout. During reverse closure, the switch rail moves from the outside inward under the traction force of the switch machine. As the switch rail moves, the inner roller rotates in the opposite direction under frictional drive, and its top generatrix height gradually decreases. When its height is lower than the top height of the outer roller, the switch rail is again in a downhill path until the closure action is completed. Therefore, the switch rail is on a dynamically changing but continuously descending support trajectory throughout the repulsion and closure processes, reducing traction resistance during repulsion and closure, decreasing the load and energy consumption of the switch machine, and improving the stability and reliability of the system operation.
[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0020] Figure 1 This is a schematic diagram of the structure of the turnout roller device of this utility model;
[0021] Figure 2 This is a cross-sectional view of the inner roller body of this utility model;
[0022] Figure 3 This is a side view of the inner roller body of this utility model;
[0023] Figure 4This is a cross-sectional view of the outer roller body of this utility model;
[0024] Figure 5 This is a schematic diagram showing the switch rail in a closed state when the present invention is in use;
[0025] Figure 6 This is a schematic diagram illustrating the process of the switch rail transitioning from a closed state to a repulsive state during the use of this utility model;
[0026] Figure 7 This is a schematic diagram showing the switch rail in a repulsive state when the present invention is in use.
[0027] Legend:
[0028] 1. Upper support; 11. Upper roller shaft groove; 2. Lower support; 21. Lower roller shaft groove; 3. Inner roller body; 31. Inner rolling outer ring; 32. Inner roller shaft; 33. Bushing; 34. Sealing ring; 35. Sealing skeleton; 4. Outer roller body; 41. Outer rolling outer ring; 42. Outer roller shaft; 5. Height adjustment shim; 6. Bolt; 7. Slide table; 8. Switch rail. Detailed Implementation
[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.
[0030] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0031] This application discloses a turnout roller device.
[0032] Reference Figure 1 This embodiment provides a turnout roller device, including a base, an inner roller body 3, and an outer roller body 4. The base is used to install and support the inner roller body 3 and the outer roller body 4, and is fixed to the turnout slide table 7 by bolts 6. The inner roller body 3 and the outer roller body 4 are arranged side by side on the base along the transverse direction of the turnout, and their top generatrices together form a rolling support surface for supporting the bottom of the switch rail 8. During the switching process, the switch rail 8 achieves low-friction rolling by contacting this support surface, thereby improving the switching efficiency.
[0033] The outer roller body 4 has a concentric structure, so its top generatrix height remains constant during rotation, providing a constant support reference. The inner roller body 3 has an eccentric structure, causing its top generatrix height to change with the rotation angle of the roller body, forming a series of heights throughout the entire eccentric rotation cycle. Its highest point is higher than the top generatrix of the outer roller body 4, and its lowest point is lower than the top generatrix of the outer roller body 4.
[0034] During installation, the initial eccentricity angle of the inner roller body 3 is adjusted so that it is at its lowest eccentricity point when the switch rail 8 is in the closed state, i.e., the top generatrix height is at its minimum. At this time, the switch rail 8 contacts the inner roller body 3 first during the repulsion and slides along its surface, achieving a downward slope trajectory from high to low, which helps the switch machine to start the repulsion movement of the switch rail 8 with a smaller traction force. As the switch rail 8 continues to move outward, the inner roller body 3 rotates under the friction between itself and the switch rail 8, and its top generatrix height gradually increases with the rotation. When the switch rail 8 is about to transition to the support of the outer roller body 4, the top generatrix height of the inner roller body 3 rises to be consistent with the top of the outer roller body 4; as the switch rail 8 continues to repel, the inner roller body 3 continues to rotate, and its top height further increases, exceeding the constant height of the outer roller body 4. At this time, the switch rail 8 is still in a downward slope state until the maximum repulsion stroke is reached. When the switch rail 8 completes the repulsion action, the inner roller body 3 is at the highest point of the eccentric structure, that is, the height of the top generatrix reaches its maximum value.
[0035] During the reverse closure process, the switch rail 8 moves from the outside to the inside, initially contacting the outer roller body 4. Since the outer roller body 4 is a concentric structure, its support height is constant. Subsequently, the switch rail 8 enters the support area of the inner roller body 3. Driven by friction, the inner roller body 3 rotates in the opposite direction, and its top generatrix height gradually decreases. When its height drops below the top height of the outer roller body 4, the switch rail 8 re-enters the downhill path. When the switch rail 8 completes closure, the inner roller body 3 returns to its lowest eccentric point, completing one eccentric rotation cycle. Throughout the entire repulsion and closure process, the switch rail 8 remains on a continuous downhill trajectory, effectively reducing traction requirements and equipment load, and improving the operating efficiency and structural reliability of the switch device.
[0036] To ensure that the switch rail 8 moves along a consistent downhill path during both the repulsion and closure transitions, in this embodiment, the height difference between the highest and lowest points of the top generatrix of the inner roller body 3 and the top generatrix of the outer roller body 4 is consistent. During rotation, the height of the top generatrix of the inner roller body 3 changes symmetrically around a median height, i.e., it has fixed highest and lowest points. Specifically, during rotation, the height of the top generatrix of the inner roller body 3 gradually increases from its lowest point to its highest point, forming a fixed height variation range ΔH. The height of the top generatrix of the outer roller body 4 is precisely located in the middle of this range, i.e., higher than the lowest point ΔH / 2 of the inner roller body 3 and lower than its highest point ΔH / 2. This centrally symmetrical arrangement ensures that the switch rail 8 contacts the roller bodies sequentially from the inside to the outside during the repulsion process, with the contact points always sliding along a continuously descending support trajectory, thus achieving a low-resistance downhill repulsion path. During the reverse closure, the switch rail 8 moves from the outside to the inside, and the contact points return to the starting position along a path with gradually decreasing height, also constituting a downhill state. Because of the symmetrical elevation design, the downhill slope is consistent during the repulsion and closure processes, and there will be no situation where the slope is large during repulsion and small during closure, or vice versa.
[0037] Specifically, refer to Figure 2 In this embodiment, the inner roller body 3 includes an inner roller shaft 32 and an inner rolling outer ring 31 sleeved on the inner roller shaft 32. The inner hole and outer circle of the inner rolling outer ring 31 are eccentrically positioned. Designing the inner roller body 3 as consisting of the inner roller shaft 32 and the inner rolling outer ring 31 sleeved on it enables functional separation and modularization of the rolling support structure. The inner roller shaft 32 serves as a load-bearing and installation positioning element, while the inner rolling outer ring 31 acts as the direct contact surface of the switch rail 8. Through rotation relative to the roller shaft, low-friction rolling support is achieved for the switch rail 8 during movement. This design allows for movable contact between the switch rail 8 and the roller body, significantly reducing the sliding resistance of the switch rail 8 during transitions. In a specific embodiment, the inner rolling outer ring 31 adopts an eccentric structure with a 1mm distance between the inner hole and outer circle axis, and its height varies between -1 and +1mm during rotation.
[0038] Reference Figure 3 To facilitate observation of the eccentricity of the inner roller shaft, the outer circumference of the inner rolling outer ring 31 is provided with identification marks to indicate the highest and lowest points. During on-site installation or commissioning, workers can adjust the eccentric structure to the specified initial angle according to these marks, ensuring that the starting position of the device meets the design requirements. Secondly, during later maintenance or component replacement, these marks can quickly locate the eccentricity, preventing deviation of the switch rail 8's movement path or failure of the conversion effect due to incorrect installation direction.
[0039] Reference Figure 4The outer roller body 4 includes an outer roller shaft 42 and an outer rolling outer ring 41 sleeved on the outer roller shaft 42. The inner hole and outer circle of the outer rolling outer ring 41 are coaxially aligned. The outer roller body 4 is constructed similarly to the inner roller body 3, but there are key functional differences. The outer rolling outer ring 41 is a concentric structure, with its inner hole axis coinciding with the outer circle axis, ensuring that its top generatrix height remains constant during rotation. Compared to the eccentric inner structure, the constant height of the outer rolling outer ring 41 effectively avoids trajectory uncertainty caused by simultaneous height fluctuations on both sides, ensuring the smoothness and controllability of the transition process of the switch rail 8. Through this combination of dynamic inner and constant outer structures, the switch rail 8 rolls in a downward direction throughout the entire conversion process, reducing conversion resistance and ensuring the consistency of the bidirectional gradient trajectory, significantly improving the operating efficiency and structural reliability of the switch system.
[0040] In this embodiment, the base consists of an upper support 1 and a lower support 2, which are fixedly connected by screws, welding, or integral molding to form a stable load-bearing structure. To achieve reliable installation and axial positioning of the inner roller body 3 and the outer roller body 4, the upper support 1 has at least two upper roller shaft grooves 11, and the lower support 2 has a corresponding lower roller shaft groove 21. The upper and lower roller shaft grooves 21 are arranged opposite to each other, forming a through roller groove in a structural configuration. The two ends of the roller shafts of the inner and outer roller bodies 4 are respectively inserted into the roller grooves and clamped by the upper and lower supports 2 to achieve double-point support and vertical limitation of the roller shafts. This structural design has the following effects: First, the two ends of the roller shaft are clamped and fixed by the upper and lower supports 2, which can effectively improve the stability of the rollers during the process of bearing the load of the switch rail 8 and prevent swaying or tilting caused by single-point support; second, by opening the upper and lower roller shaft grooves 21, it is convenient to achieve rapid alignment and installation positioning of the rollers during the assembly process, improving assembly efficiency and consistency.
[0041] To ensure reliable positioning of the roller shafts during assembly and prevent circumferential rotation during use, this embodiment provides a first positioning plane on the outer circumferential surfaces of the inner roller shaft 32 and the outer roller shaft 42, and a second positioning plane that mates with them is provided on the inner wall of the roller groove of the upper bracket 1. Through surface-to-surface contact, the two achieve accurate positioning of the roller shafts during installation and effectively restrict their circumferential position during structural operation. The first positioning plane is located on a flat machined area on the cylindrical surface of the roller shaft, at the end of the shaft near the upper bracket 1. The second positioning plane is located on the inner wall of the roller groove of the upper bracket 1, closely contacting the first positioning plane to prevent rotation of the roller shaft within the groove. This structural fit not only ensures accurate adjustment of the inner eccentric roller to a predetermined angle position during installation but also facilitates the stable installation of the outer concentric roller. Placing the positioning surface on the upper bracket 1 instead of the lower bracket 2 facilitates direct insertion and observation of the positioning status from above, improving the convenience of assembly operations. On the other hand, it avoids weakening the load-bearing cross section of the roller shaft at the lower bracket 2, ensuring that the entire roller has good structural rigidity and support strength when bearing the vertical load of the switch rail 8.
[0042] To reduce frictional resistance during roller rotation, improve operational stability, and extend the service life of the device, this embodiment provides bushings 33 between the inner roller shaft 32 and the inner rolling outer ring 31, and between the outer roller shaft 42 and the outer rolling outer ring 41. The bushings 33 serve as an intermediate layer between the roller shaft and the outer ring, providing a sliding fit and reducing wear, effectively improving the rotational accuracy and operating efficiency of the rollers.
[0043] To further prevent external dust, moisture, gravel, and other impurities from entering the gap of the bushing 33 and causing rolling jamming, lubrication failure, or internal wear, this embodiment provides a sealing skeleton 35 at both ends of each bushing 33. The sealing skeleton 35 is a ring-shaped metal or composite skeleton with high structural rigidity. It is usually reinforced by steel wire rings or elastic steel strips and covered with rubber or engineering plastics to form a closed lip structure. The sealing skeleton 35, through its cooperation with the rolling outer ring or bushing, forms a contact seal structure with elastic pre-compression, which can maintain a continuous fit and stably prevent external particles or contaminants from entering the rolling area even during long-term operation.
[0044] On the one hand, the bushing 33 can share the frictional wear between the shaft and the rolling outer ring, improving rotational flexibility and component service life; on the other hand, the sealing skeleton 35 provides effective end sealing, preventing impurities from entering the internal structure, reducing maintenance frequency and maintaining operational reliability. The combination of these two features enables the roller to have strong anti-pollution capability and structural durability when operating under complex conditions such as railway turnouts, ensuring that the roller always has good rotational support performance during the switch rail 8 switching process.
[0045] Reference Figure 1 To accommodate the need for fine-tuning the installation height of the roller assembly under different turnout structures or on-site installation conditions, this embodiment includes a height adjustment shim 5 on the side of the lower support 2 away from the upper support 1. The height adjustment shim 5 is typically located between the lower support 2 and the slide table 7. It is a thin sheet structure, made of stainless steel, copper alloy, or high-strength engineering plastic, possessing good rigidity and corrosion resistance. The main function of the shim is to adjust the installation height of the entire roller assembly by increasing or decreasing its thickness without changing the main structural dimensions, thus adapting to the assembly reference differences between the bottom surface of the switch rail 8 and the slide table 7 at different turnout work sites. During installation, technicians can select a height adjustment shim 5 of appropriate thickness based on on-site measurements. This ensures that after installation, the top generatrix of the rollers maintains good contact with the bottom of the switch rail 8, while also ensuring that the height matching relationship between the outer roller body 4 and the inner roller body 3 is not disrupted, thereby guaranteeing the continuous and effective structural logic of the downhill track.
[0046] In one specific implementation, the working process is as follows:
[0047] like Figure 5 As shown, the switch rail 8 is in a fully closed state. At this time, the inner roller body 3 is at the lowest point of the eccentric structure, with its top generatrix height at its lowest, and the height difference between it and the slide table 7 is 1mm. The outer roller body 4 is a concentric structure with a constant top height, and the height difference between it and the slide table 7 is 2mm. In this state, the bottom of the switch rail 8 simultaneously contacts the slide table 7 and the inner roller body 3, forming the initial support state. Since the height of the inner roller body 3 is slightly higher than that of the slide table 7, the traction force required by the switch machine is smaller, which is beneficial for the smooth start-up of the device.
[0048] like Figure 6 As shown, as the switch machine gradually applies traction, the switch rail 8 moves from the inside to the outside, driving its outer rolling ring to rotate during continuous contact with the inner roller body 3. Because the inner rolling outer ring 31 has an eccentric structure, its top height gradually increases during rotation. At this time, the inner roller body 3 transitions from its lowest point to its highest point, gradually increasing the height difference between it and the slide table 7. When the switch rail 8 is about to transition to the support area of the outer roller body 4, the top height of the inner roller body 3 rises to match the top of the outer roller body 4, meaning the height difference between both and the slide table 7 is 2mm. At this point, the switch rail 8 and the inner roller body 3 form a smooth support surface. Subsequently, the switch rail 8 continues to move outward, the inner roller body 3 continues to rotate, its top height further increases, and the switch rail 8 continues to move along a path from high to low, forming a continuous downhill trajectory, ultimately completing the repulsion action.
[0049] like Figure 7As shown, the switch rail 8 is in its maximum repulsion state, and the inner roller 3 rotates to its highest eccentric point, with its top height at its maximum, resulting in a height difference of 3mm between it and the slide table 7; the outer roller 4 maintains a constant height difference of 2mm. During the reverse closing process, the switch machine applies traction, and the switch rail 8 begins to move from the outside to the inside, first passing through the constant height section of the outer roller 4, and then gradually entering the support area of the inner roller 3. As the switch rail 8 continues to contact the inner rolling outer ring 31, it rotates in the opposite direction under frictional drive, and its top height gradually decreases from 3mm. When the height difference between the inner roller 3 and the slide table 7 is less than 2mm, the contact path of the switch rail 8 forms a downhill trajectory again, completing the closing action. Finally, the inner roller 3 returns to its lowest point, and the switch rail 8 returns to the closed state, completing one full cycle of eccentric rolling support. This dynamic support process ensures that switch rail 8 always slides downhill along the path throughout the entire process of separation and closure, significantly reducing resistance and mechanical load during the switching process, and improving the driving efficiency of the switch machine and the operational stability of the turnout device.
[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A turnout roller device, characterized in that: Includes a base, an inner roller body (3) and an outer roller body (4) respectively installed on the base. The inner roller body (3) and the outer roller body (4) are both arranged horizontally, so that the top generatrices of the inner roller body (3) and the outer roller body (4) together form a support surface for supporting the switch rail (8). The outer roller body (4) has a concentric structure, and the height of the top generatrix remains constant during rotation; The inner roller body (3) has an eccentric structure, which causes the height of the top generatrix of the inner roller body (3) to change with the rotation angle during rotation. The highest point is higher than the top generatrix of the outer roller body (4), and the lowest point is lower than the top generatrix of the outer roller body (4).
2. The turnout roller device according to claim 1, characterized in that: The height difference between the highest and lowest points of the top generatrix of the inner roller body (3) and the top generatrix of the outer roller body (4) is consistent.
3. The turnout roller device according to claim 1, characterized in that: The inner roller body (3) includes an inner roller shaft (32) and an inner rolling outer ring (31) sleeved on the inner roller shaft (32). The inner hole and the outer circle of the inner rolling outer ring (31) are eccentrically arranged. The outer roller body (4) includes an outer roller shaft (42) and an outer rolling outer ring (41) sleeved on the outer roller shaft (42). The inner hole and the outer circle of the outer rolling outer ring (41) are coaxially arranged.
4. The turnout roller device according to claim 3, characterized in that: The outer periphery of the inner rolling outer ring (31) is provided with identification marks for indicating the highest and lowest points.
5. The turnout roller device according to claim 3, characterized in that: The base includes an upper support (1) and a lower support (2). The upper support (1) has at least two upper roller shaft grooves (11), and the lower support (2) has a lower roller shaft groove (21) corresponding to the upper roller shaft grooves (11). The upper roller shaft grooves (11) and the lower roller shaft grooves (21) are combined to form a roller groove for installing the inner roller body (3) or the outer roller body (4).
6. The turnout roller device according to claim 5, characterized in that: Both the inner roller shaft (32) and the outer roller shaft (42) are provided with a first positioning plane. At least one of the upper roller groove and the lower roller groove has a second positioning plane formed on its inner wall that cooperates with the first positioning plane. The first positioning plane and the second positioning plane fit together to restrict the circumferential rotation of the inner roller shaft (32) and the outer roller shaft (42).
7. The turnout roller device according to claim 6, characterized in that: The first positioning plane is set on the side of the inner roller shaft (32) and the outer roller shaft (42) near the upper bracket (1), and the second positioning plane is set on the inner wall of the upper roller groove.
8. The turnout roller device according to claim 4, characterized in that: Bushings (33) are provided between the inner roller shaft (32) and the inner rolling outer ring (31) and between the outer roller shaft (42) and the outer rolling outer ring (41).
9. The turnout roller device according to claim 8, characterized in that: Sealing skeletons (35) are provided at both ends of the bushing (33).
10. The turnout roller device according to claim 5, characterized in that: A height adjustment shim (5) is provided on the side of the lower bracket (2) away from the upper bracket (1).