Anti-derailing supporting wheel
By using a rotating contact roller with an anti-derailment structure and an elastic buffer design, the problem of insufficient limiting structure of traditional support rollers is solved, achieving stable limiting of the track and convenient maintenance, and improving the anti-derailment performance and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN LIANJUN MACHINERY CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional track rollers have short guide lengths and low constraint strength, which cannot effectively prevent track derailment. Especially on rough roads or when the tracks are worn, the tracks are prone to lateral movement, increasing the frequency of derailment accidents and potentially causing equipment damage and safety risks.
It adopts an anti-detachment structure, including a rotating abutment roller and an elastic buffer design. The track links are stably limited by a quick-release fixing component. The elastic contact of springs and dampers reduces wear, and the bearing combination structure reduces frictional resistance. At the same time, the quick-release fixing component is easy to replace.
It significantly improves the track's ability to prevent lateral movement, reduces the probability of derailment accidents, extends component life, reduces maintenance costs, and ensures the continuity and safety of equipment.
Smart Images
Figure CN224375732U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of track roller technology, and in particular relates to a track roller that prevents derailment. Background Technology
[0002] Track rollers are core walking support components of tracked construction machinery (such as excavators, bulldozers, tracked cranes, and agricultural tracked machinery). Their core functions are to bear the weight of the entire machine, transmit driving force, and work with the track links to achieve smooth movement. They are key components that ensure the reliable operation of equipment in complex working conditions such as mining, construction, farmland operations, and municipal emergency repairs. As tracked equipment develops towards larger, more efficient, and heavier load-bearing capabilities, and as operating environments become more demanding (such as muddy sites, gravel roads, and uneven terrain), the industry has placed higher requirements on the anti-derailment ability, wear resistance, ease of maintenance, and overall reliability of track rollers.
[0003] Traditional track rollers rely on simple flanges on their own edges to laterally limit the track links. This type of limiting structure has a short guide length, low constraint strength, and no active limiting mechanism designed to address track deviation trends. In actual operation, when the equipment travels on rough roads, soft muddy ground, or when the track links have play due to long-term wear, the track is prone to lateral movement. If large pieces of mud, gravel, or other impurities adhere to the track links, it will further damage the fit stability between the track and the track roller, leading to frequent track derailment accidents. Derailment not only requires stopping the machine for manual repositioning, directly delaying the construction progress, but may also cause secondary damage such as flange deformation and track link breakage due to violent collisions between the track and the track roller, and may even cause safety risks such as equipment rollover.
[0004] Therefore, we propose a track roller to prevent derailment. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a support roller that prevents derailment.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A support roller for preventing derailment includes a connecting sleeve, on both sides of the outer surface of the connecting sleeve, rotating blocks are installed, a fixing plate is connected to the outer side of each of the two rotating blocks, a bearing seat is connected to the outer side of each of the two fixing plates, a quick-release fixing assembly is detachably provided on the top of each of the two bearing seats, and an anti-derailment structure is connected to the inner sidewall of each of the two quick-release fixing assemblies.
[0008] The anti-derailment structure is used to limit the two sides of the track link to prevent derailment, and it elastically limits the contact to avoid the particles and mud on the track link from causing great wear to the anti-derailment structure.
[0009] The quick-release fixing assembly is used to install the anti-detachment structure to the bearing seat, so that the anti-detachment structure can be quickly replaced when it is severely worn.
[0010] As a preferred embodiment of this utility model, the anti-detachment structure includes a fixed mounting block, an arc-shaped adapter plate fixedly connected to the bottom of the fixed mounting block, a plurality of mounting grooves opened on the inner side wall of the fixed mounting block, a damper fixedly connected inside each of the plurality of mounting grooves, a spring provided on the outer side of each of the plurality of dampers, a mounting seat fixedly connected to the inner wall of each of the plurality of dampers and springs, a plurality of bearing bodies installed on the top and bottom of the mounting seat, and a rotating abutment roller provided between each of the plurality of bearing bodies.
[0011] As a preferred embodiment of this utility model, the rotating abutment roller is used to limit the two sides of the track link. The rotating abutment roller rotates through the bearing body, and when the particle protrusion on the track link contacts the rotating abutment roller, it will retract under the action of the spring and damper to avoid hard contact and cause greater wear.
[0012] As a preferred embodiment of this utility model, the quick-release fixing assembly includes a fixing block and an abutting edge. The fixing block is fixed to the fixing mounting block, and the abutting edge is fixedly disposed on the outer surface of the bearing seat. Dustproof protective plates are provided on both sides of the bottom of the fixing block. Several first threaded connection holes are provided on the dustproof protective plates and the abutting edge. Threaded rods are provided inside the several first threaded connection holes, and threaded locking caps are fixed on the several threaded rods.
[0013] As a preferred embodiment of this utility model, each of the two connecting sleeves is provided with a plurality of second threaded connecting holes, the size and position of the plurality of second threaded connecting holes are adapted to the plurality of first threaded connecting holes, and the plurality of threaded rods pass through the first threaded connecting holes and connect with the second threaded connecting holes, and the threaded locking cap is used to lock the threaded rods.
[0014] As a preferred embodiment of this utility model, the bottom of the fixing block is adapted to the top edge of the bearing seat, the abutting edge is used to limit the outer side of the fixing block and to abut against the limiting fixing block, and the two dustproof protective plates are used to protect the connection of the bearing seat to prevent dust from entering the bearing seat.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This invention, through its anti-derailment structure, can form a stable and continuous limiting constraint on both sides of the track links. Compared with the traditional track roller, which relies solely on the simple flange on the wheel edge for limiting, it significantly improves the ability to prevent lateral movement of the track. Even when operating on rough roads, soft muddy ground, or when the track links have slight wear and play due to long-term use, it can still effectively suppress the track deviation trend and significantly reduce the probability of derailment accidents. This not only reduces the downtime and reset time caused by derailment and avoids secondary damage such as wheel flange deformation and track link breakage caused by derailment, but also avoids safety risks such as equipment rollover, effectively ensuring the continuity of construction machinery operation and operational safety.
[0017] The anti-detachment structure employs an elastic buffer design combining springs and dampers, along with a rotatable contact roller and bearing combination structure. When protruding particles adhering to the surface of the track link come into contact with the anti-detachment structure, the elastic component can drive the contact roller to adaptively retract, avoiding the hard collision caused by traditional rigid limiting. Furthermore, the contact roller achieves rolling contact through the bearing, significantly reducing the frictional resistance between it and the track link. This design avoids the "grinding effect" caused by impurities, reduces wear and tear on the anti-detachment structure itself, and minimizes scratch damage to the sides of the track links. This simultaneously extends the service life of both the anti-detachment structure and the track, reducing component replacement frequency and maintenance costs.
[0018] The anti-slip structure and bearing housing are detachably connected by quick-release fixing components, eliminating the need for traditional welding or complex connection methods with multiple sets of dense bolts. When the anti-slip structure needs to be replaced due to severe wear from long-term use, there is no need to completely remove the support roller from the equipment's walking mechanism or perform any cutting operations. The old parts can be removed and the new parts installed simply by removing and installing the threaded rod and threaded locking cap. Attached Figure Description
[0019] Figure 1 A schematic diagram of the main structure of a derailment prevention support roller provided by this utility model;
[0020] Figure 2 An exploded view of the quick-release fixing assembly for an anti-derailment support roller provided by this utility model;
[0021] Figure 3 A bottom view of the main body of a derailment prevention support roller provided by this utility model;
[0022] Figure 4 This is a schematic diagram of an anti-derailment structure for a support roller provided by this utility model.
[0023] Legend: 10. Connecting sleeve; 20. Rotating block; 30. Fixing plate; 40. Anti-detachment structure; 401. Fixed mounting block; 402. Arc-shaped adapter plate; 403. Mounting groove; 404. Damper; 405. Spring; 406. Mounting seat; 407. Bearing body; 408. Rotating abutment roller; 50. Quick-release fixing assembly; 501. Fixing block; 502. Dustproof protective plate; 503. Abutment edge; 504. First threaded connection hole; 505. Threaded rod; 506. Threaded locking cap; 60. Bearing seat; 70. Second threaded connection hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.
[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example
[0028] like Figure 1-4As shown, this utility model provides a technical solution: a support roller for preventing derailment, including a connecting sleeve 10, rotating blocks 20 are fixedly installed on both sides of the outer surface of the connecting sleeve 10, fixing plates 30 are fixed on the outer sides of the two rotating blocks 20, bearing seats 60 are fixed on the outer sides of the two fixing plates 30, quick-release fixing components 50 are detachably provided on the top of the two bearing seats 60, and anti-derailment structures 40 are fixed on the inner sidewalls of the two quick-release fixing components 50.
[0029] The anti-derailment structure 40 is used to limit the two sides of the track link to prevent derailment, and it is elastically limited when in contact to avoid the particles and mud on the track link from causing great wear to the anti-derailment structure 40.
[0030] The quick-release fixing component 50 is used to install the anti-detachment structure 40 onto the bearing seat 60, so that the anti-detachment structure 40 can be quickly replaced when it is severely worn.
[0031] The connecting sleeve 10, as the core connecting component of the entire track roller, is used to cooperate with the wheel axle of the equipment's traveling mechanism to achieve overall installation. The rotating block 20 and the fixed plate 30 form a support structure, transmitting the force of the connecting sleeve 10 to the bearing seat 60, ensuring that the bearing seat 60 stably bears the weight of the equipment. The bearing seat 60 provides basic support for the rotation of the track roller, while the quick-release fixing assembly 50 detachably installs the anti-derailment structure 40 on the top of the bearing seat 60, so that the anti-derailment structure 40 can accurately correspond to the two sides of the track link. When the track is running, the anti-derailment structure 40 limits the lateral movement of the track link on both sides and reduces wear by utilizing elastic contact characteristics. The quick-release fixing assembly 50 allows for quick replacement of the anti-derailment structure 40 after it wears out through convenient disassembly and assembly. All components work together to ensure the anti-derailment performance and maintenance convenience of the track roller.
[0032] The anti-detachment structure 40 includes a fixed mounting block 401. An arc-shaped adapter plate 402 is fixedly connected to the bottom of the fixed mounting block 401. Several mounting grooves 403 are opened on the inner side wall of the fixed mounting block 401. A damper 404 is fixedly connected inside each of the mounting grooves 403. A spring 405 is provided on the outer side of each of the dampers 404. A mounting seat 406 is fixedly connected to the inner wall of the dampers 404 and the springs 405. Several bearing bodies 407 are installed on the top and bottom of the mounting seat 406. Rotating abutment rollers 408 are provided between the bearing bodies 407.
[0033] The fixed mounting block 401 serves as the basic carrier of the anti-detachment structure 40 and is fixed as a whole by connecting with the quick-release fixing component 50. The arc-shaped adapter plate 402 fits the outer contour of the bearing seat 60, enhancing the stability of the anti-detachment structure 40 after installation. The mounting groove 403 provides installation space for the damper 404 and the spring 405. The damper 404 and the spring 405 are connected in parallel to form an elastic buffer unit. When the mounting seat 406 is subjected to external force, the spring 405 can provide elastic recoil force, and the damper 404 can slow down the recoil speed and absorb impact energy through damping. The mounting seat 406 serves as the support structure for the rotating abutment roller 408. It is connected to the rotating abutment roller 408 through the bearing body 407 at the top and bottom, so that the rotating abutment roller 408 can rotate flexibly around its own axis, thereby converting the sliding friction with the track link into rolling friction and reducing the wear of the base.
[0034] The rotating abutment roller 408 is used to limit the two sides of the track link. The rotating abutment roller 408 rotates through the bearing body 407. When the particle protrusion on the track link contacts the rotating abutment roller 408, it will retract under the action of the spring 405 and the damper 404 to avoid hard contact and cause greater wear.
[0035] The outer edge of the rotating abutment roller 408 forms a limiting engagement with the side of the track link. When the track tends to shift laterally, the rotating abutment roller 408 will contact the side of the track link, physically preventing further shifting. Since the rotating abutment roller 408 is connected to the mounting base 406 through the bearing body 407, it rotates synchronously with the track link during track operation, significantly reducing the coefficient of friction between them. When particles, mud, or other protrusions on the surface of the track link contact the rotating abutment roller... When the roller 408 contacts, the protrusion will exert an outward pushing force on the rotating abutment roller 408. This pushing force is transmitted to the mounting base 406, which compresses the spring 405 and extends and retracts the damper 404, causing the rotating abutment roller 408 to retract into the mounting groove 403, providing clearance space for the protrusion and avoiding rigid collision. After the protrusion passes, the rebound force of the spring 405 will push the rotating abutment roller 408 to reset, continuing to maintain the limit on the track link, thereby achieving the anti-derailment function while minimizing wear caused by contact with impurities.
[0036] The quick-release fixing assembly 50 includes a fixing block 501 and an abutment edge 503. The fixing block 501 is fixed to the fixing mounting block 401. The abutment edge 503 is fixedly set on the outer surface of the bearing seat 60. Dustproof protective plates 502 are provided on both sides of the bottom of the fixing block 501. Several first threaded connection holes 504 are opened on the dustproof protective plate 502 and the abutment edge 503. Threaded rods 505 are provided inside the several first threaded connection holes 504. Threaded locking caps 506 are fixed on the several threaded rods 505.
[0037] The fixing block 501 is fixedly connected to the fixing mounting block 401 of the anti-detachment structure 40, transmitting the force of the anti-detachment structure 40 to the bearing seat 60; the contact edge 503 protrudes from the outer surface of the bearing seat 60. When the fixing block 501 is installed in place, the contact edge 503 will contact the outer edge of the fixing block 501, forming a lateral limit on the fixing block 501 and preventing lateral displacement during operation; the dustproof protective plate 502 extends from the bottom of the fixing block 501 to both sides, and its bottom edge fits against the outer surface of the bearing seat 60, which can cover the connection gap between the fixing block 501 and the bearing seat 60; when the anti-detachment structure is installed... At 40°C, place the fixing block 501 on top of the bearing housing 60 and align the dustproof protective plate 502 with the contact edge 503. Pass the threaded rod 505 through the first threaded connection hole 504 on the dustproof protective plate 502 and the contact edge 503, then tighten the threaded locking cap 506 to generate axial tension on the threaded rod 505, thus tightly fixing the fixing block 501, dustproof protective plate 502, and contact edge 503, achieving rapid installation of the anti-detachment structure 40. For disassembly, simply loosen the threaded locking cap 506 and remove the threaded rod 505 to remove the fixing block 501 along with the anti-detachment structure 40 from the bearing housing 60. The operation is simple and efficient.
[0038] Both connecting sleeves 10 are provided with a number of second threaded connecting holes 70. The size and position of the number of second threaded connecting holes 70 are adapted to the number of first threaded connecting holes 504. A number of threaded rods 505 pass through the first threaded connecting holes 504 and connect with the second threaded holes 70. The threaded locking cap 506 is used to lock the threaded rods 505.
[0039] The second threaded connection hole 70 corresponds to the size and position of the first threaded connection hole 504, ensuring that the threaded rod 505 can pass through both simultaneously. This allows the quick-release fixing component 50 to not only connect to the bearing seat 60, but also further enhance the fixing strength through the connecting sleeve 10, forming a double fixing support of "bearing seat 60-connecting sleeve 10". This prevents loosening caused by excessive force on a single connection point. After the threaded rod 505 passes through the two sets of threaded connection holes, it forms a mechanical engagement with the hole wall through the thread. When the threaded locking cap 506 is tightened, the locking cap fits tightly against the outer surface of the contact edge 503. The resulting friction can prevent the threaded rod 505 from rotating and loosening under vibration or external force, thereby ensuring the connection stability between the quick-release fixing component 50 and the anti-detachment structure 40, while providing a convenient unlocking method for subsequent disassembly.
[0040] The bottom of the fixing block 501 is adapted to the top edge of the bearing housing 60. The abutting edge 503 is used to limit the outer side of the fixing block 501 and to abut against the limiting fixing block 501. The two dustproof protective plates 502 are used to protect the connection of the bearing housing 60 to prevent dust from entering the bearing housing 60.
[0041] The shape of the bottom of the fixing block 501 matches the contour of the top edge of the bearing housing 60, allowing them to fit tightly together after installation. This increases the contact area to distribute the force and prevents the fixing block 501 from deforming due to excessive local stress. The abutting edge 503, on the one hand, restricts the lateral displacement of the fixing block 501 by abutting against the outside of the fixing block 501. On the other hand, when the threaded rod 505 is tightened, the abutting edge 503 will generate a reverse supporting force on the fixing block 501, ensuring the tight fit between the fixing block 501 and the bearing housing 60. The dustproof protective plate 502 extends from the bottom of the fixing block 501 towards the connection gap of the bearing housing 60, with its side fitting against the outer surface of the bearing housing 60, forming a physical barrier. This barrier prevents dust, mud, moisture, and other impurities in the working environment from entering the interior of the bearing housing 60 through the connection gap, avoiding contamination of the lubricating grease inside the bearing housing 60 or wear of the internal bearing components, thus ensuring the normal rotation function and service life of the bearing housing 60.
[0042] It should be noted that the electrical equipment and components mentioned above are all programmed and controlled using existing PLC controllers. Since these are mature technologies, they will not be described in detail here.
[0043] The working process of this type of anti-derailment support roller is as follows:
[0044] I. Preliminary Installation Process
[0045] Overall assembly of track rollers
[0046] First, align the connecting sleeve 10 with the axle of the tracked equipment's walking mechanism. The support roller is then fixed to the equipment's foundation through the structure of the connecting sleeve 10 itself. The rotating blocks 20 on both sides of the connecting sleeve 10 rotate synchronously with the axle. The fixing plate 30 on the outer side of the rotating block 20 transmits the load-bearing force of the connecting sleeve 10 to the outer bearing seat 60, so that the bearing seat 60 stably supports the overall weight of the support roller, laying the foundation for the subsequent installation of components.
[0047] Assembly and fixation of anti-detachment structure 40 and quick-release assembly
[0048] First, fix the fixing block 401 of the anti-detachment structure 40 to the fixing block 501 of the quick-release assembly, so that the anti-detachment structure 40 and the quick-release assembly form an integrated module; then place the module on the top of the bearing seat 60, ensuring that the bottom of the fixing block 501 fits against the top edge of the bearing seat 60 and the dustproof protective plate 502 is aligned with the connection gap of the bearing seat 60, while making the abutting edge 503 on the outer surface of the bearing seat 60 abut against the outer side of the fixing block 501 (achieving lateral limiting); then, insert the threaded rod 505 through the first threaded connection hole 504 on the dustproof protective plate 502 and the abutting edge 503, and screw it into the matching second threaded connection hole 70 on the connecting sleeve 10, and finally tighten the threaded locking cap 506 on the threaded rod 505, so that the fixing block 501, the dustproof protective plate 502, the bearing seat 60, and the connecting sleeve 10 are tightly fixed, completing the installation of the anti-detachment structure 40; during this process, the dustproof protective plate 502 simultaneously forms a barrier to prevent impurities from entering the interior of the bearing seat 60.
[0049] II. Operation Flow
[0050] Load and foundation rotation
[0051] When the equipment is in operation, the weight of the whole machine is transmitted to the connecting sleeve 10 through the wheel axle, and then to the bearing seat 60 through the rotating block 20 and the fixed plate 30. The bearing seat 60 bears the weight and provides support for the rotation of the support roller, ensuring that the support roller rotates synchronously with the movement of the track chain links, so as to achieve smooth movement of the equipment.
[0052] Anti-slip limiting and elastic cushioning to reduce friction
[0053] During track link operation, the rotating abutment roller 408 of the anti-derailment structure 40 remains in contact with both sides of the track link, physically restricting the lateral movement of the track link and preventing derailment. When protrusions such as particles or mud attached to the surface of the track link come into contact with the rotating abutment roller 408, the thrust generated by the protrusion pushes the rotating abutment roller 408 and the mounting base 406 into the mounting groove 403 of the fixed mounting block 401. At this time, the spring 405 in the mounting groove 403 is compressed and the damper 404 is extended and retracted, absorbing impact energy through elastic deformation and providing clearance space to prevent the rotating abutment roller 408 from making hard contact with the protrusion. At the same time, the rotating abutment roller 408 rotates flexibly through the bearing body 407 in the mounting base 406, converting the sliding friction with the track link into rolling friction, further reducing wear. After the protrusion has passed, the rebound force of the spring 405 pushes the rotating abutment roller 408 back to its original position, continuing to limit the track link.
[0054] Bearing housing 60 dust protection
[0055] During operation, the dustproof protective plate 502 of the quick-release component always blocks the connection gap between the bearing housing 60 and the fixing block 501, preventing dust, mud, moisture and other impurities from entering the interior of the bearing housing 60, avoiding contamination of the lubricating grease inside the bearing housing 60 or wear of the internal bearing components, and ensuring that the bearing housing 60 rotates smoothly and continuously.
[0056] III. Post-Maintenance and Replacement Process
[0057] When the anti-detachment structure 40 needs to be replaced due to severe wear from long-term use (such as wear of the rotating abutment roller 408, or failure of the elasticity of the spring 405), it is not necessary to completely disassemble the support roller from the equipment.
[0058] First, loosen the threaded locking cap 506 and remove the threaded rod 505 from the first threaded connection hole 504 and the second threaded connection hole 70;
[0059] Remove the fixing block 501 along with the anti-detachment structure 40 directly from the top of the bearing seat 60 to complete the disassembly of the old anti-detachment structure 40;
[0060] Replace the new anti-derailment structure 40 module (with pre-installed fixing block 501) and place it on top of the bearing seat 60 according to the previous installation procedure. After aligning the threaded hole, insert the threaded rod 505 and tighten the threaded locking cap 506 to complete the quick replacement of the anti-derailment structure 40 and restore the anti-derailment function of the support roller.
[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A support roller for preventing derailment, characterized in that, Includes a connecting sleeve (10), on both sides of the outer surface of the connecting sleeve (10) are mounted rotating blocks (20), on the outer sides of the two rotating blocks (20) are fixed plates (30), on the outer sides of the two fixed plates (30) are bearing seats (60), and the top of the two bearing seats (60) is detachably provided with quick-release fixing components (50), and the inner sidewalls of the two quick-release fixing components (50) are connected with anti-detachment structures (40); The anti-detachment structure (40) is used to limit the two sides of the track link and is elastically limited when in contact; The quick-release fixing assembly (50) is used to install the anti-detachment structure (40) to the bearing seat (60).
2. The anti-derailment support roller according to claim 1, characterized in that, The anti-detachment structure (40) includes a fixed mounting block (401), with an arc-shaped adapter plate (402) fixedly connected to the bottom of the fixed mounting block (401). Several mounting grooves (403) are provided on the inner sidewall of the fixed mounting block (401). A damper (404) is fixedly connected inside each of the mounting grooves (403). A spring (405) is provided on the outer side of each of the dampers (404). A mounting seat (406) is fixedly connected to the inner wall of each of the dampers (404) and the spring (405). Several bearing bodies (407) are installed on the top and bottom of the mounting seat (406). Rotating abutment rollers (408) are provided between each of the bearing bodies (407).
3. A derailment prevention support roller according to claim 2, characterized in that, The rotating abutment roller (408) is used to limit the two sides of the track link. The rotating abutment roller (408) rotates through the bearing body (407). When the particle protrusion on the track link contacts the rotating abutment roller (408), it will retract under the action of the spring (405) and the damper (404).
4. A derailment prevention support roller according to claim 3, characterized in that, The quick-release fixing assembly (50) includes a fixing block (501) and an abutment edge (503). The fixing block (501) is fixed to the fixing mounting block (401). The abutment edge (503) is fixedly disposed on the outer surface of the bearing seat (60). Dustproof protective plates (502) are provided on both sides of the bottom of the fixing block (501). Several first threaded connection holes (504) are provided on the dustproof protective plate (502) and the abutment edge (503). Threaded rods (505) are provided inside the several first threaded connection holes (504). Threaded locking caps (506) are fixed on the several threaded rods (505).
5. A derailment prevention support roller according to claim 4, characterized in that, Both of the connecting sleeves (10) are provided with a plurality of second threaded connecting holes (70), the size and position of the plurality of second threaded connecting holes (70) are adapted to the plurality of first threaded connecting holes (504), the plurality of threaded rods (505) pass through the first threaded connecting holes (504) and are connected to the second threaded connecting holes (70), and the threaded locking cap (506) is used to lock the threaded rods (505).
6. A support roller for preventing derailment according to claim 5, characterized in that, The bottom of the fixing block (501) is adapted to the top edge of the bearing seat (60). The abutting edge (503) is used to limit the outer side of the fixing block (501) and to abut against the limiting fixing block (501). The two dustproof protective plates (502) are used to protect the connection of the bearing seat (60) to prevent dust from entering the bearing seat (60).