Device for preventing derailment
By combining flexible and rigid anti-derailment devices, the problem of easy damage to the rail end sealing structure is solved, achieving stable stopping of the gantry crane and protection of the rails.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU ENG CO LTD CHINA RAILWAY SEVENTH GRP
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-21
AI Technical Summary
The existing rail end sealing structure is not ideal in terms of blocking effect and is easily damaged by the impact force of the gantry crane, resulting in rail damage and high maintenance costs.
The derailment prevention device combines flexible and rigid barriers, including a positioning seat, a barrier seat, a buffer arm, a top pressure column, and a barrier column. The flexible barrier initially offsets the impact force, and then the rigid barrier ensures that the gantry crane stops.
It effectively prevents gantry cranes from derailing, protects the rail structure from damage, reduces maintenance costs, and enhances the blocking effect.
Smart Images
Figure CN224530453U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mechanical engineering technology, and in particular to a device for preventing derailment. Background Technology
[0002] Gantry cranes are a type of bridge crane, commonly known as portal cranes. In ports, they are mainly used for loading and unloading cargo and bulk materials in outdoor freight yards and material yards. Their metal structure resembles a portal frame, with two legs supporting the main beam, allowing them to travel directly on ground-level tracks. The main beam may have cantilever beams extending outwards at both ends.
[0003] Currently, to prevent gantry cranes from derailing, the tracks of gantry cranes are usually sealed at both ends. However, when the gantry crane moves, it will generate a certain impact force due to inertia. Most of the existing rail end sealing structures use rigid blocking components, which are not ideal in terms of blocking effect. They are easily destroyed by the impact generated by the gantry crane, and the track will also be damaged, resulting in high maintenance costs.
[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content
[0005] The purpose of this application is to provide a derailment prevention device to solve or alleviate the problem that traditional rail end sealing structures have poor blocking effect and are easily damaged by the impact of gantry cranes.
[0006] To achieve the above objectives, this application provides the following technical solution:
[0007] This application provides a derailment prevention device, comprising: a positioning seat fixed to the end of a rail, the end of the positioning seat hooked onto one side of the rail web; a blocking seat disposed on the top plate of the rail near the positioning seat, the end of the blocking seat also hooked onto one side of the rail web, and a buffer arm connected between the ends of the blocking seat and the positioning seat; a pressing column threaded onto the end of the blocking seat, the pressing column being perpendicular to the rail web, so that rotating the pressing column causes its end to press against the rail web. The anti-slip capability of the barrier seat is enhanced by the top pressure column; the end of the barrier seat is movably fitted with a barrier column, which is perpendicular to the rail web. The rail web surface between the barrier seat and the positioning seat has a hole at the same height as the barrier column. When the barrier seat moves towards the positioning seat under force, the buffer arm relieves the force on the barrier seat, which is a flexible barrier. When the barrier column moves with the barrier seat to the corresponding hole, it will automatically spring into the hole, which is a rigid barrier.
[0008] Preferably, both the positioning seat and the blocking seat are U-shaped, and both ends of the positioning seat and the blocking seat protrude toward the web of the rail to fit against it.
[0009] Preferably, the two ends of the positioning seat are connected by bolts, and the shank of the bolt passes through both ends of the positioning seat and the web of the rail.
[0010] Preferably, the axial direction of the buffer arm is consistent with the extension direction of the rail. The buffer arm includes a compression column and a compression tube. One end of the compression column is connected to the end side of the positioning seat, and the other end of the compression column is sleeved inside one end of the compression tube. The other end of the compression tube is connected to the end side of the blocking seat.
[0011] Preferably, a first unloading spring is sleeved on the outside of the extrusion column, and a second unloading spring is installed inside the extrusion tube;
[0012] When the buffer arm is subjected to axial pressure, the extrusion tube will compress the first relief spring, and the extrusion column will compress the second relief spring.
[0013] Preferably, the end of the extrusion tube facing the extrusion column has an extrusion plate extending radially, and the diameter of the extrusion plate is larger than the diameter of the first unloading spring.
[0014] Preferably, a barrier plate is vertically connected to the top of the barrier seat on the side away from the positioning seat, and a rib is provided within the angle formed by the barrier plate and the barrier seat.
[0015] Preferably, the top of the top pressure column is connected to a clamping plate, and the side of the clamping plate facing the web of the rail is provided with a rubber block;
[0016] The outer end of the top pressure column is connected to a rectangular twist block.
[0017] Preferably, the inner side of the end of the barrier seat is provided with grooves to accommodate the clamping plate and the barrier post;
[0018] The barrier post and the top pressure post are at the same height.
[0019] Preferably, the inner end of the barrier post passes through the end of the barrier seat and abuts against the web of the rail.
[0020] A compression spring is sleeved on the outer side of the inner end of the barrier post, and the compression spring is located in the groove;
[0021] The inner end of the barrier post extends radially outward from a limiting plate, which compresses the compression spring.
[0022] The distance between the limiting plate and the end of the barrier post is greater than the thickness of the rail web.
[0023] Compared with the closest prior art, the technical solution of this application has the following beneficial effects:
[0024] This application combines the effects of both flexible and rigid barriers. The combination of these two elements significantly enhances the barrier effect, effectively preventing gantry cranes from derailing as they are about to reach the end of the track due to inertia. This also ensures that the gantry cranes themselves and the rail structure are not damaged by the impact of the gantry cranes, resulting in excellent practical performance. Attached Figure Description
[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:
[0026] Figure 1 This is a schematic diagram of the overall structure of this application in conjunction with the rail;
[0027] Figure 2 This is a schematic diagram of the overall structure of this application;
[0028] Figure 3 This is a top view of the present application;
[0029] Figure 4 This is an overall schematic diagram of the buffer arm structure of this application;
[0030] Figure 5 This is a schematic diagram of the front view of this application;
[0031] Figure 6 for Figure 5 Cross-sectional view at point AA;
[0032] Figure 7 for Figure 5 Cross-sectional view at point BB.
[0033] In the diagram: 1. Positioning seat; 2. Barrier seat; 3. Top pressure column; 4. Barrier column; 5. Extrusion column; 6. Extrusion tube; 7. First unloading spring; 8. Second unloading spring; 9. Extrusion plate; 10. Barrier plate; 11. Rib plate; 12. Clamping plate; 13. Rubber block; 14. Compression spring; 15. Limiting plate. Detailed Implementation
[0034] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0035] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.
[0036] 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 disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.
[0037] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0038] This embodiment aims to provide a derailment prevention device, whose main function is to combine flexible and rigid barriers to achieve the best blocking effect and ensure the stable stopping of the gantry crane traveling on the rails.
[0039] Reference Figure 1 and Figure 2 It includes: a positioning seat 1 and a barrier seat 2. Both positioning seat 1 and barrier seat 2 are U-shaped. Positioning seat 1 is located at the end of the rail, and barrier seat 2 is located on the top plate of the rail near positioning seat 1. Both ends of positioning seat 1 and barrier seat 2 are hooked onto both sides of the rail web, and both ends of positioning seat 1 and barrier seat 2 protrude towards the rail web to fit against it. The two ends of positioning seat 1 are connected by bolts, that is, the bolt shank passes through both ends of positioning seat 1 and the rail web, and finally the bolt is tightened by nuts. Positioning seat 1 is used as the pile of barrier seat 2.
[0040] Reference Figures 1-4A buffer arm is connected between the ends of the barrier seat 2 and the positioning seat 1. A pair of buffer arms are provided, respectively located on both sides of the rail web. The axial direction of the buffer arm is consistent with the extension direction of the rail. Specifically, the buffer arm includes a compression column 5 and a compression tube 6. One end of the compression column 5 is welded to the side of the end of the positioning seat 1, and the other end of the compression column 5 is sleeved inside one end of the compression tube 6. The other end of the compression tube 6 is welded to the side of the end of the barrier seat 2. A first unloading spring 7 is sleeved on the outside of the compression column 5, and a second unloading spring 8 is installed in the cavity of the compression tube 6. When the buffer arm is subjected to axial pressure, that is, when it is pushed by the barrier seat 2, the compression tube 6 will compress the first unloading spring 7, and at the same time, the compression column 5 will compress the second unloading spring 8. The buffering effect can be greatly enhanced by the simultaneous action of the two springs. Both the first unloading spring 7 and the second unloading spring 8 can be flat and not easily deformed.
[0041] In this embodiment, an extrusion plate 9 extends radially from one end of the extrusion tube 6 toward the extrusion column 5, and the diameter of the extrusion plate 9 is larger than the diameter of the first unloading spring 7. The purpose of this is to ensure that the extrusion tube 6 can apply stable pressure to the first unloading spring 7.
[0042] Reference Figure 5 and Figure 6 A barrier plate 10 is vertically welded to the top of the barrier seat 2 on the side away from the positioning seat 1 to ensure effective contact between the barrier seat 2 and the gantry crane. A triangular rib plate 11 is welded within the angle formed by the barrier plate 10 and the barrier seat 2 to enhance the connection stability between the barrier plate 10 and the barrier seat 2. A pair of top pressure columns 3 are threaded onto both ends of the barrier seat 2. The two top pressure columns 3 on the same side are far apart from each other and close to the two sides of the barrier seat 2 respectively, so that space is reserved between the two top pressure columns 3 for installing the barrier column 4. The top pressure column 3 is perpendicular to the rail web, so that the top pressure column 3 is rotated so that its end presses against the rail web. The top pressure column 3 enhances the anti-slip ability of the barrier seat 2. That is, when the barrier seat 2 is impacted by the gantry crane, not only can the buffer arm provide a blocking force, but also a certain blocking force can be provided by increasing the friction between the barrier seat 2 and the rail web. The combined effect of the two makes the blocking effect better.
[0043] In this embodiment, the head of the top pressure column 3 is connected to a clamping plate 12. The clamping plate 12 increases the contact surface between the top pressure column 3 and the rail web. A rubber block 13 is provided on the side of the clamping plate 12 facing the rail web to increase the friction between the top pressure column 3 and the rail web.
[0044] In this embodiment, a rectangular torsion block is connected to the outward end of the top pressure column 3 so that workers can use tools such as wrenches to apply stronger torque to the top pressure column 3, so that the pressure of its end against the rail web can reach the maximum.
[0045] Reference Figure 5 and Figure 7At least one barrier post 4 is movably fitted at one end of the barrier seat 2. The barrier post 4 is perpendicular to the rail web and is at the same height as the top pressure post 3. The rail web surface between the barrier seat 2 and the positioning seat 1 has a hole at the same height as the barrier post 4. This hole is not shown in the figure. When the barrier seat 2 is impacted by the gantry crane, it will move towards the positioning seat 1. The buffer arm will unload the force on the barrier arm. This is a flexible barrier. When the barrier post 4 moves with the barrier seat 2 to the corresponding hole, it will automatically spring into the hole. This is a rigid barrier. When the first barrier post 4 breaks, the barrier seat 2 will continue to move towards the positioning seat 1. During this period, the second barrier post 4 will enter the next hole to perform a second rigid barrier (because the first hole has been blocked by the broken barrier post 4). The barrier effect is excellent.
[0046] Specifically, the inner side of the end of the barrier seat 2 is provided with grooves to accommodate the clamping plate 12 and the barrier post 4. The inner end of the barrier post 4 passes through the end of the barrier seat 2 and abuts against the rail web. A flat compression spring 14 is sleeved on the outer side of the inner end of the barrier post 4. The compression spring 14 is located in the groove. A limiting plate 15 protrudes radially from the inner end of the barrier post 4. The compression spring 14 is compressed by the limiting plate 15. The length of the limiting plate 15 from the end of the barrier post 4 is greater than the thickness of the rail web to ensure that when the barrier post 4 moves to the position corresponding to the hole, it can automatically and quickly spring into the hole by the reaction force of the compression spring 14. The outer end of the barrier post 4 is upset to prevent the barrier post 4 from falling off the barrier seat 2 when idle.
[0047] When the barrier seat 2 is impacted by the gantry crane, if the friction between the barrier seat 2 and the web of the rail is insufficient to offset the impact, the barrier seat 2 will slide along the rail toward the positioning seat 1. During this process, the buffer arm is pushed by the barrier seat 2, so that the buffer arm and the barrier seat 2 work together. If the barrier post 4 slides to the hole position with the barrier seat 2, it will automatically spring in, changing from a flexible barrier to a rigid barrier. Since the flexible barrier can offset part of the impact force, the force on the barrier post 4 will be greatly reduced at this time, and the effect of the rigid barrier will be more stable, ensuring that the gantry crane can be stopped.
[0048] The derailment prevention device provided in this embodiment has both flexible and rigid blocking effects. The cooperation between them greatly enhances the blocking effect. It can effectively stop the gantry crane from moving to the end of the track due to inertia, ensuring that the gantry crane will not derail. At the same time, it can also ensure that the device itself and the rail structure are not damaged by the impact of the gantry crane. The actual use effect is excellent.
[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A device for preventing derailment, characterized in that, include: A positioning seat is fixed to the end of the rail, and the end of the positioning seat is hooked onto one side of the rail web. The barrier seat is located on the top plate of the rail near the positioning seat. The end of the barrier seat is also hooked to one side of the rail web, and a buffer arm is connected between the end of the barrier seat and the end of the positioning seat. The end of the barrier seat is threaded with a top pressure column, which is perpendicular to the rail web. The top pressure column is rotated so that its end presses against the rail web, thereby enhancing the anti-slip capability of the barrier seat. The end of the barrier seat is movably fitted with a barrier post, which is perpendicular to the rail web. The rail web surface between the barrier seat and the positioning seat has a hole at the same height as the barrier post. When the barrier seat moves toward the positioning seat under force, the buffer arm relieves the force on the barrier seat, which is a flexible barrier. When the barrier post moves with the barrier seat to the corresponding hole, it will automatically spring into the hole, which is a rigid barrier.
2. The derailment prevention device according to claim 1, characterized in that, Both the positioning seat and the blocking seat are U-shaped, and both ends of the positioning seat and the blocking seat protrude toward the web of the rail to fit against it.
3. The derailment prevention device according to claim 2, characterized in that, The two ends of the positioning seat are connected by bolts, and the bolt shank passes through both ends of the positioning seat and the web of the rail.
4. The derailment prevention device according to claim 2, characterized in that, The axial direction of the buffer arm is consistent with the extension direction of the rail. The buffer arm includes a compression column and a compression tube. One end of the compression column is connected to the end side of the positioning seat. The other end of the compression column is sleeved inside one end of the compression tube. The other end of the compression tube is connected to the end side of the blocking seat.
5. The derailment prevention device according to claim 4, characterized in that, The extrusion column is fitted with a first unloading spring on its outside, and the extrusion tube is fitted with a second unloading spring inside. When the buffer arm is subjected to axial pressure, the extrusion tube will compress the first relief spring, and the extrusion column will compress the second relief spring.
6. The derailment prevention device according to claim 5, characterized in that, The extrusion tube has an extrusion plate extending radially from one end toward the extrusion column, and the diameter of the extrusion plate is larger than the diameter of the first unloading spring.
7. The derailment prevention device according to claim 1, characterized in that, A barrier plate is vertically connected to the top of the barrier seat on the side away from the positioning seat, and a rib is provided within the angle formed by the barrier plate and the barrier seat.
8. The derailment prevention device according to claim 1, characterized in that, The top of the top pressure column is connected to a clamping plate, and the side of the clamping plate facing the web of the rail is provided with a rubber block. The outer end of the top pressure column is connected to a rectangular twist block.
9. The derailment prevention device according to claim 8, characterized in that, The inner side of the end of the barrier seat is provided with grooves to accommodate the clamping plate and the barrier post; The barrier post and the top pressure post are at the same height.
10. The derailment prevention device according to claim 9, characterized in that, The inner end of the barrier post passes through the end of the barrier seat and abuts against the web of the rail. A compression spring is sleeved on the outer side of the inner end of the barrier post, and the compression spring is located in the groove; The inner end of the barrier post extends radially outward from a limiting plate, which compresses the compression spring. The distance between the limiting plate and the end of the barrier post is greater than the thickness of the rail web.