Protective device

Abstract

The application relates to a protection device, a first supporting piece with a first supporting body extending along a first direction, a second supporting piece with a second supporting body extending along a second direction, both ends of the first supporting body being provided with sleeves extending along a third direction and first supporting seats, both ends of the second supporting body being provided with connecting parts extending along the third direction and second supporting seats, the outer wall of the side of the connecting part facing the sleeve being provided with a plug rod extending along the third direction, the inside of the sleeve being provided with a plug cavity penetrating through, and the plug rod being rotationally arranged in the plug cavity. The utility model is suitable for multiple railway operation scenes, the rotatable connection of the plug rod and the plug cavity allows the first and second supporting pieces to adjust the included angle according to the rail state and the site. Moreover, the utility model is efficient in dismounting and mounting, has no complex connecting parts, can be folded and stored after operation, can be carried by one person and moved along the line, and does not need to be assisted by carrying tools.

Description

Technical Field

[0001] This application relates to the field of railway line maintenance technology, and in particular to a protective device. Background Technology

[0002] China's railway industry is on a fast track of high-quality development, with the network of high-speed and conventional railways continuously expanding. The upgrading and reconstruction of existing lines are proceeding in parallel with the construction of new lines. Rail replacement and rail welding have become high-frequency core procedures in railway construction and maintenance. However, a hidden but highly risky safety hazard lurks in these work scenarios: rail springback. Whether it's adjusting the new rail during replacement, removing and relocating the old rail, or temporarily storing and adjusting rails before and after welding, rails, as long, strip-shaped metal components, possess a certain degree of rigidity and elasticity. When subjected to prying with crowbars or external forces, they are highly susceptible to uncontrollable springback due to stress release. Especially during the removal of old rails, the sudden release of internal stress formed by long-term train loads and track structure constraints, or the recovery of deformed rails due to improper support during storage, can cause sudden springback at the ends or middle of the rail.

[0003] Currently, there are no dedicated rail protection devices available in the domestic market. Existing operations mostly rely on experience-based methods such as crowbar fixing and manual support, making it difficult to address safety risks at their root. This has become a bottleneck restricting the improvement of safety levels in railway maintenance operations. Utility Model Content

[0004] This application provides a protective device that, during rail replacement or rail welding operations, is fixed to the sleeper bolts in the section where the rail is to be replaced, forming a blocking surface to prevent workers from being injured by the rebound of the rail.

[0005] According to one aspect of this application, a protective device is provided, including a first support member having a first support body extending along a first direction; and a second support member having a second support body extending along a second direction.

[0006] The first support body has sleeves and first support seats extending along a third direction at both ends; the second support body has connecting parts and second support seats extending along a third direction at both ends; the connecting parts and the sleeves are arranged along the third direction, and a plug rod extending along the third direction is provided on the outer wall of the connecting part facing the sleeve; a through insertion cavity is opened inside the sleeve, and the plug rod is rotatably disposed in the insertion cavity; any two of the first direction, the second direction and the third direction intersect.

[0007] In one embodiment, both the first support base and the second support base are rotatably provided with positioning members along a third direction, and the positioning members have locking cavities on the outer wall of the side opposite to the first support base and the second support base.

[0008] In one embodiment, the first support base has a first rotating cavity on the outer wall facing the positioning member, and the positioning member has a rotating shaft on the outer wall facing the first support base. In the corresponding first support base and positioning member, the rotating shaft is rotatably disposed in the first rotating cavity. The second support base has a second rotating cavity on the outer wall facing the positioning member, and in the corresponding second support base and positioning member, the rotating shaft is rotatably disposed in the second rotating cavity.

[0009] In one embodiment, a first limiting groove is formed on the side wall of the first rotating cavity, and a second limiting groove is formed on the side wall of the second rotating cavity; a convex ring is provided on the side wall of the rotating shaft; in the corresponding first support and positioning member, the convex ring is rotatably disposed in the first limiting groove; in the corresponding second support and positioning member, the convex ring is rotatably disposed in the second limiting groove.

[0010] In one embodiment, the protective device includes a plurality of first reinforcing ribs, one end of which is connected to the first support body and the other end of which is connected to the first support base.

[0011] In one embodiment, the protective device includes a plurality of second reinforcing ribs, one end of which is connected to the second support body and the other end of which is connected to the second support base.

[0012] In one embodiment, in the corresponding first support and positioning member, the positioning member is detachably mounted on the first support; in the corresponding second support and positioning member, the positioning member is detachably mounted on the second support.

[0013] In one embodiment, a shock-absorbing layer is provided on the outer wall of the connecting part and the sleeve.

[0014] In one embodiment, both the first support member and the second support member are made of alloy material.

[0015] In one embodiment, the outer walls of the first and second supports are provided with a coating.

[0016] This application has the following beneficial effects:

[0017] This invention, through its rotatable connection and modular assembly design, is adaptable to various railway operation scenarios, avoiding the poor adaptability of traditional fixed devices. The rotatable connection between the insertion rod and the insertion cavity allows the first and second support members to adjust their angle according to the rail condition and site conditions. This invention is highly efficient in assembly and disassembly, with no complex connecting parts; a single person can complete the deployment and anchoring of the device in 1-2 minutes. After operation, it can be folded for storage, allowing a single person to carry the device and move it along the railway line without the need for transport tools. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application.

[0019] Figure 2 This is a three-dimensional structural diagram of the first support member in one embodiment of this application.

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0021] Figure 4 This is a three-dimensional structural diagram of the second support member in one embodiment of this application.

[0022] Figure 5 This is a three-dimensional structural diagram of the positioning element in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First support member; 101. First support body; 102. Sleeve; 103. First support base; 104. Insertion cavity; 105. First reinforcing rib; 106. First rotating cavity; 107. First limiting groove;

[0025] 2. Second support member; 201. Second support body; 202. Connecting part; 203. Second support base; 204. Insert rod; 205. Second reinforcing rib; 206. Second rotating cavity; 207. Second limiting groove;

[0026] 3. Positioning component; 301. Rotating shaft; 302. Convex ring; 303. Locking cavity;

[0027] First direction X; second direction Y; third direction Z. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] See appendix Figure 1 - Appendix Figure 5 , Figure 1 A schematic diagram of the overall structure of a protective device according to an embodiment of this application is shown, including a first support member 1 having a first support body 101 extending along a first direction; and a second support member 2 having a second support body 201 extending along a second direction.

[0035] The first support body 101 has a sleeve 102 and a first support base 103 extending along a third direction at both ends; the second support body 201 has a connecting part 202 and a second support base 203 extending along a third direction at both ends; the connecting part 202 and the sleeve 102 are arranged along the third direction, and an insertion rod 204 extending along the third direction is provided on the outer wall of the connecting part 202 facing the sleeve 102. A through insertion cavity 104 is opened inside the sleeve 102, and the insertion rod 204 is rotatably disposed in the insertion cavity 104; any two of the first direction, the second direction and the third direction intersect.

[0036] During operation, the equipment uses a combination design of the first support component 1 and the second support component 2, with multi-directional extension components and rotatable connections as the core, to construct a rigid protective frame that can adapt to railway rail replacement and welding operation scenarios. This can effectively constrain the rebound path of the rail and avoid personal injury to the operators.

[0037] The first support member 1 provides a rotatable connection reference for the second support member 2. The sleeve 102 has a through insertion cavity 104, which is the interface for connecting with the second support member 2. The inner diameter and length of the insertion cavity 104 are precisely matched with the insertion rod 204 of the second support member 2. This ensures that the insertion rod 204 can rotate smoothly while avoiding excessive gaps that could cause the connection to loosen, thus ensuring the relative position of the two support members is stable.

[0038] See appendix Figure 1 and attached Figure 5 The first support base 103 and the second support base 203 are both rotatably provided with positioning members 3 along the third direction. The outer wall of the positioning member 3 opposite to the first support base 103 and the second support base 203 is provided with a locking cavity 303.

[0039] In some embodiments, the positioning element 3 structural design solves the problem of fixing the first support element 1 and the second support element 2 to the ground or track foundation, effectively improving the resistance to the impact of rail rebound. The positioning element 3 serves as the anchoring mechanism between the first support base 103, the second support base 203, and the sleepers, and is rotatably connected via a rotating shaft 301. This design ensures that the positioning element 3 can be freely adjusted in angle. When the first support element 1 and the second support element 2 are installed between two adjacent sleepers, or on the two outermost sleepers out of three adjacent sleepers, the angle between the first support element 1 and the second support element 2 is different. Therefore, the positioning element 3 can be quickly adjusted, installed, and positioned according to actual needs and the actual position and angle of the bolts and nuts.

[0040] In some embodiments, the locking cavity 303 is the core of the positioning member 3 in achieving its anchoring function, and its design must be adapted to the installation requirements of the nut and the screw. The locking cavity 303 is formed on the outer wall of the positioning member 3 on the side away from the support base, that is, the side that directly contacts the ground or sleeper. The shape of the cavity must match the shape of the nut. If a hexagonal nut is used, the locking cavity 303 is designed as a hexagonal groove. If other polygonal nuts are used, the cavity is a corresponding polygonal groove. Since the nut is installed on the screw and the screw protrudes from the nut, the depth of the groove must be much greater than the thickness of the nut to ensure that the nut and the screw can be fully embedded in the cavity and to avoid the positioning member 3 not fitting tightly to the sleeper due to the screw protruding.

[0041] In some embodiments, the inner wall of the locking cavity 303 needs to have sufficient precision, such as a small surface roughness, to prevent the nut from shaking inside the cavity and ensure stability during operation. In rail replacement and welding operations, traditional support devices often fail to effectively fix themselves to the ground or sleepers, causing the device to be knocked over or displaced when the rail rebounds, thus losing its protective function. The positioning component 3, through its rotational design and the combined design of the locking cavity 303, effectively solves the above problems and achieves better results. The rotatable structure allows it to adapt to complex working surfaces, ensuring a secure fit. The ground or sleeper foundation in railway operation scenarios is not completely flat. If the positioning component 3 is fixedly connected to the first support seat 103 and the second support seat 203, when the sleeper is uneven or tilted, the positioning component 3 will make contact or partial contact with the sleeper surface. This can easily lead to the overall loosening of the device due to uneven force. The rotatable design of the positioning component 3 allows it to automatically adjust its angle according to the actual slope and flatness of the ground, maximizing the fit and ensuring that the anchoring force is evenly transmitted to the surface.

[0042] In some embodiments, when working in the track bed area, one end of the screw can be screwed into the nut in the locking cavity 303. The nut is pre-embedded in the locking cavity 303 and fixed. The other end passes through the gap of the gravel in the track bed and is screwed into the ground to form a rigid connection. At this time, the device is firmly fixed to the ground. Even if the rail rebounds violently, the tension of the screw can resist the impact force and prevent the device from shifting.

[0043] In some embodiments, when the rail rebounds and impacts the first support body 101 or the second support body 201 of the device, the impact force is transmitted along the support body to the support seat, then through the support seat to the positioning member 3, and finally through the locking cavity 303 of the positioning member 3 to the ground or sleeper. The entire force transmission process forms a closed loop of rail impact force, device support frame, positioning member 3, sleeper or ground, avoiding the impact force from concentrating on the device itself and causing deformation. At the same time, the reaction force of the sleeper or ground is used to offset the rail rebound, achieving effective constraint on the rebound.

[0044] In some embodiments, the locking cavity 303 of the positioning member 3 is designed to ensure anchoring strength while also taking into account operational efficiency. When the work is finished and the device needs to be disassembled, it can be separated from the nut on the sleeper simply by pulling it upwards. Then, the first support member 1 and the second support member 2 can be folded by rotating the insertion rod 204, making it convenient to carry to the next work point. This avoids excessive time spent on disassembly and assembly due to the complexity of the structure, and adapts to the needs of multi-point movement and rapid operation in railway work.

[0045] See appendix Figure 2 - Appendix Figure 5 The first support 103 has a first rotating cavity 106 on the outer wall facing the positioning member 3. The positioning member 3 has a rotating shaft 301 on the outer wall facing the first support 103. The rotating shaft 301 is rotatably disposed in the first rotating cavity 106 in the corresponding first support 103 and positioning member 3. The second support 203 has a second rotating cavity 206 on the outer wall facing the positioning member 3. The rotating shaft 301 is rotatably disposed in the second rotating cavity 206 in the corresponding second support 203 and positioning member 3.

[0046] In some embodiments, in the cooperation system of the positioning member 3 with the first support base 103 and the second support base 203, the structural design of the rotating shaft 301 and the rotating cavity is the core of realizing the rotatable function of the positioning member 3. It provides a precise mechanical transmission basis for the positioning member to adapt to complex working surfaces and ensure tight fit, while taking into account both connection stability and rotation flexibility.

[0047] As the rotation output unit of the positioning component 3, the rotating shaft 301 directly determines the rotation accuracy and load-bearing capacity of the positioning component 3. Its structure must meet the dual requirements of low-friction rotation and high-strength impact resistance. Its diameter needs to be precisely matched with the inner diameter of the first rotating cavity 106 and the second rotating cavity 206. Usually, an interference fit is adopted, with the clearance controlled at 0.02-0.05mm. This avoids the positioning component from shaking due to excessive clearance, and also prevents interference fit from hindering rotation.

[0048] In some embodiments, considering that the positioning component needs to withstand lateral impact force when the rail rebounds, the rotating shaft 301 needs to be made of high-strength steel, and its tensile strength and toughness are improved through quenching and high-temperature tempering. At the same time, the outer surface of the rotating shaft 301 needs to be chrome-plated or nitrided to reduce surface roughness and reduce the coefficient of friction with the inner walls of the first rotating cavity 106 and the second rotating cavity 206, ensuring that the positioning component can rotate easily and avoiding rotational failure due to wear from long-term use.

[0049] Rubber dustproof rings are installed at the openings of the first rotating cavity 106 and the second rotating cavity 206. The inner diameter of the dustproof rings is matched with the diameter of the rotating shaft 301, which can prevent track bed gravel and dust from entering the rotating cavity and avoid accelerated wear. At the same time, an annular oil groove is opened at the mating point between the rotating shaft 301 and the rotating cavity. Lubricating grease is injected regularly, which not only improves the lubrication effect but also plays a sealing role and delays the corrosion of components.

[0050] In some embodiments, the rotating shaft 301 can be designed to be detachable, such as being connected to the positioning member 3 by threads. When the rotating shaft 301 wears out due to long-term use, it is not necessary to replace the entire positioning member 3; simply unscrew the old rotating shaft 301 and replace it with a new one, thus reducing maintenance costs. Various diameters of rotating shaft 301 accessories are also provided to adapt to different specifications of support seat rotating cavities, improving the versatility of the device.

[0051] See appendix Figure 2 - Appendix Figure 5 The first rotating cavity 106 has a first limiting groove 107 on its cavity sidewall, and the second rotating cavity 206 has a second limiting groove 207 on its cavity sidewall; a protruding ring 302 is provided on the sidewall of the rotating shaft 301; in the corresponding first support 103 and positioning member 3, the protruding ring 302 is rotatably disposed in the first limiting groove 107; in the corresponding second support 203 and positioning member 3, the protruding ring 302 is rotatably disposed in the second limiting groove 207.

[0052] In some embodiments, the first limiting groove 107 and the second limiting groove 207 serve as axial constraint units. They are annular grooves formed on the sidewalls of the first rotating cavity 106 and the second rotating cavity 206. Their design must precisely match the convex ring 302 without affecting the rotation of the rotating shaft 301. Both the first limiting groove 107 and the second limiting groove 207 are designed as annular grooves. The groove width must be consistent with the thickness of the convex ring 302. For example, if the thickness of the convex ring 302 is 5mm, the groove width is controlled between 5.02-5.05mm. A transition fit is used to ensure that the convex ring 302 can rotate smoothly in the groove without significant wobbling.

[0053] In some embodiments, the convex ring 302 serves as an axial limiting protrusion of the rotating shaft 301, integrally formed with the rotating shaft 301 or fixed by welding. When the positioning member 3 rotates around the axis of the rotating shaft 301, the convex ring 302 will synchronously slide circumferentially within the limiting groove. When the positioning member 3 is subjected to axial force, such as the upward or downward impact force when the rail rebounds, the two sides of the convex ring 302 will contact the two side walls of the limiting groove respectively, forming a hard constraint. If the positioning member 3 has a tendency to disengage outward, i.e., is subjected to upward force, the upper side of the convex ring 302 will press against the upper side wall of the limiting groove, preventing the rotating shaft 301 from moving outward. If the positioning member 3 has a tendency to squeeze inward, i.e., is subjected to downward force, the lower side of the convex ring 302 will press against the lower side wall of the limiting groove, restricting the rotating shaft 301 from moving inward. This bidirectional locking ensures that the positioning member 3 always maintains a stable connection with the first support seat 103 and the second support seat 203.

[0054] In some embodiments, during railway operations, the device may face various axial impact scenarios: for example, the crowbar accidentally hitting the positioning element 3 during rail replacement, the lateral force of the rail rebounding causing the positioning element 3 to lift upwards, and bumps when workers handle the device. Without a limiting structure, the rotating shaft 301 may dislodge from the rotating cavity, causing the positioning element 3 to fall off.

[0055] See appendix Figure 1 - Appendix Figure 2 The protective device includes a plurality of first reinforcing ribs 105, one end of which is connected to the first support body 101 and the other end of which is connected to the first support base 103.

[0056] In some embodiments, the design of the first reinforcing rib 105 is key to improving the structural load-bearing capacity. By dispersing the rebound impact force of the rail through the mechanical principle of triangular support, it avoids deformation or breakage at the connection between the first support body 101 and the first support seat 103 due to stress concentration, thus providing mechanical protection for the rigid support of the device.

[0057] The first reinforcing rib 105 is usually designed as a triangular or trapezoidal steel plate, with a thickness that matches the wall thickness of the first support body 101 and the first support base 103, to avoid stress concentration due to thickness differences.

[0058] In some embodiments, the first reinforcing rib 105 employs a dual connection of welding and mechanical reinforcement. First, one end of the first reinforcing rib 105 is fully welded to the outer wall of the first support body 101 via fillet weld, and the other end is fully welded to the outer wall of the first support base 103, ensuring weld strength. If the first support body 101 and the first support base 103 are thick-walled structures, holes can be drilled at the connection points between the reinforcing rib and both, and secondary reinforcement can be achieved using bolts, further improving connection stability and preventing weld cracking due to long-term impact.

[0059] The reinforcement rib is installed at the right-angle connection between the first support body 101 and the first support base 103, which is the core stress area when the rail rebounds. When the first support body 101 is subjected to lateral impact, a large bending moment will be generated at the corner. Without a reinforcing rib, the moment will be concentrated in a local area at the corner, which can easily cause the support body or support base to bend. After the reinforcing rib is installed at the corner, the bending moment can be converted into axial pressure and tension, which are distributed to the connection surface between the reinforcing rib and the first support body 101 and the first support base 103, greatly reducing local stress.

[0060] See appendix Figure 1 and attached Figure 4 The protective device includes multiple second reinforcing ribs 205, one end of which is connected to the second support body 201 and the other end is connected to the second support base 203.

[0061] In some embodiments, the second reinforcing rib 205 and the first reinforcing rib 105 complement each other, further improving the overall impact resistance of the device through mechanical reinforcement. As an auxiliary support component, the second support 2 often needs to adjust its angle according to the working scenario, that is, rotated through the insert rod 204 and the sleeve 102. Therefore, the second reinforcing rib 205 needs to ensure strength while avoiding interference with the rotation function.

[0062] When the device forms a double-support frame with the first and second support members 2 to block the rail rebound, if only the first support member 1 has reinforcing ribs and the second support member 2 does not, a strength imbalance will occur. The impact force of the rail rebound will be evenly transmitted to the first and second support bodies 201. The first support member 1, because it has reinforcing ribs, can withstand the impact force without deformation. However, because the second support member 2 does not have reinforcing ribs, the stress at the connection corner between its support body and the support seat will exceed the yield strength of the steel, causing the second support body 201 to bend.

[0063] After the second support component 2 fails, the impact force originally borne by the two supports will be transferred to the first support component 1, causing the impact force on the first support component 1 to increase sharply, possibly exceeding its bearing limit, and ultimately causing the first support component 1 to also fail, the overall protection of the device to collapse, and unable to stop the rail from rebounding.

[0064] See appendix Figure 2 - Appendix Figure 4 In the corresponding first support base 103 and positioning member 3, the positioning member 3 is detachably installed on the first support base 103; in the corresponding second support base 203 and positioning member 3, the positioning member 3 is detachably installed on the second support base 203.

[0065] In some embodiments, in the connection system between the positioning element 3 and the first support base 103 and the second support base 203, the detachable installation design is the core adaptation solution for different specifications of sleeper bolts and nuts. Operators can quickly replace the positioning element 3 with the corresponding locking cavity 303 according to the specifications of the sleeper bolts on site, such as M22, M24, M27, etc., solving the defect that a single device cannot adapt to multiple specifications of nuts, while also ensuring connection stability and ease of disassembly and assembly.

[0066] The detachable positioning component 3 is not a simple separation design, but rather a modular splicing and disassembly design that allows for quick replacement while retaining the rotation function of the rotating shaft 301, the rotation function of the rotating cavity, the axial limiting function of the convex ring 302 and the limiting groove.

[0067] The core difference between the different specifications of the positioning component 3 lies only in the size of the locking cavity 303. For example, the locking cavity 303 for M22 nuts is hexagonal with a distance of 22mm between opposite sides. The locking cavity 303 for M24 nuts is 24mm. The dimensions of the rotating shaft 301 and the convex ring 302 are completely uniform. This modular design ensures that different specifications of the positioning component 3 can use the same support base, and nut size can be adapted without changing the support base.

[0068] In railway operations, the specifications of sleeper bolts are not entirely uniform. For example, conventional railways commonly use M22 and M24 bolts, while high-speed railways sometimes use M27. Furthermore, different construction units may use different bolt specifications, making the traditional positioning element 3 with the locking cavity 303 unsuitable. Instead of purchasing a complete set of devices for different bolt specifications, a single support frame paired with multiple sets of positioning elements 3 with different locking cavity 303 specifications is sufficient to meet the needs of various work sites.

[0069] In some embodiments, the core vulnerable part of the positioning component 3 is the locking cavity 303. Long-term friction with the nut and screw may cause wear on the cavity wall, affecting the fixing accuracy. If it is a fixed connection, the entire support needs to be replaced after the locking cavity 303 wears out. However, in the detachable design, only the worn positioning component 3 needs to be replaced, which greatly reduces maintenance costs.

[0070] In some embodiments, the locking cavity 303 can also be designed as a replaceable liner structure, for example, equipped with hexagonal liners of different sizes. When it is necessary to adapt to nuts of different specifications, only the liner needs to be replaced, without replacing the entire positioning element 3, thus improving the versatility of the device.

[0071] See appendix Figure 1 A shock-absorbing layer is provided on the outer wall of the connecting part 202 and the sleeve 102.

[0072] In some embodiments, adding a damping layer to the outer wall of the connecting part 202 and the sleeve 102 is a flexible protection optimization design for rail rebound impact. By adding an elastic buffer medium to the surface of the rigid metal component, the instantaneous impact force during rail impact can be effectively absorbed, which not only avoids damage to the rail or device itself caused by rigid collision, but also prolongs the impact force transmission time, reduces the impact peak, and further improves operational safety.

[0073] The outer wall shapes of the connecting part 202 and the sleeve 102 differ, and the damping layer needs to be fully fitted through customized molding to avoid local exposure that could lead to buffering failure. The thickness of the damping layer needs to be precisely controlled according to the buffering requirements, and is usually designed to be 5-8mm. If it is too thin, the buffering effect will be insufficient and it will not be able to effectively absorb impact energy; if it is too thick, it may interfere with the movement of the components.

[0074] The shock-absorbing layer can be made of polyurethane elastomer, with a Shore hardness of 60-70D, a resilience of ≥70%, excellent cushioning performance, strong adhesion to metal, and wear resistance, making it suitable for track replacement operations on conventional and high-speed railways.

[0075] See appendix Figure 1 - Appendix Figure 4 Both the first support component 1 and the second support component 2 are made of alloy material.

[0076] In some embodiments, the first support member 1 and the second support member 2 are made of alloy material, which is the core design for balancing structural strength and lightweight. By replacing traditional carbon steel, the alloy material improves the device's impact resistance and deformation resistance while significantly reducing the overall weight, thus meeting the needs of high-frequency movement and high-strength protection in railway operations, and reducing the burden on operators in handling the equipment.

[0077] In some embodiments, railway operation scenarios are complex, involving open-air environments, friction from track bed gravel, and rainwater erosion; therefore, the material must simultaneously meet the following requirements:

[0078] Weather resistance: It can resist outdoor high and low temperatures (-40℃-80℃), rain, and dust corrosion, preventing rust from reducing strength after long-term use;

[0079] Machinability: It is easy to cut, weld, and drill, and can accurately machine precision structures such as the insertion cavity 104 and the rotating cavity of the sleeve 102, and is not prone to cracking after machining.

[0080] The first support component 1 and the second support component 2 can be made of high-strength aluminum alloy, such as 6061-T6, with a tensile strength ≥310MPa, a density of 2.7g / cm³, a strength-to-weight ratio ≈115MPa / (g / cm³), and excellent corrosion resistance. Furthermore, they are extremely lightweight, only 1 / 3 the weight of carbon steel, and have strong weather resistance, meeting the requirements for track replacement operations on both conventional and high-speed railways.

[0081] See appendix Figure 1 - Appendix Figure 4 The outer walls of the first support member 1 and the second support member 2 are coated.

[0082] In some embodiments, an anti-rust coating is added to the outer walls of the first support member 1 and the second support member 2, which is a protective design for the high corrosion risk of railway outdoor operations. By constructing a dense and wear-resistant protective barrier on the surface of the alloy material, rainwater, track bed moisture, dust and corrosive media can be effectively isolated, preventing the support members from losing strength due to rust and extending the service life of the device.

[0083] Based on the alloy material type and the corrosion risk level of the operation, the first support component 1 and the second support component 2 can be coated with an epoxy zinc-rich primer, wherein the content of epoxy resin and zinc powder is ≥80%, the salt spray resistance is ≥500h, the adhesion is ≥5MPa, and the temperature resistance is -40℃ to 120℃. Furthermore, the zinc powder sacrificial anode protection provides strong compatibility with substrates, making it suitable for operation in dry inland areas.

[0084] The first support component 1 and the second support component 2 can also be coated with a fluorocarbon composite coating, which has an epoxy primer and a fluorocarbon topcoat, with salt spray resistance ≥1000h, adhesion ≥7MPa, weather resistance ≥10 years, and extremely strong resistance to ultraviolet rays and salt spray, making it suitable for operation in coastal, rainy or humid areas.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A protective device, characterized in that, include: The first support member (1) has a first support body (101) extending along a first direction. The second support member (2) has a second support body (201) extending in a second direction. The first support body (101) has a sleeve (102) extending along a third direction and a first support base (103) at both ends; the second support body (201) has a connecting part (202) extending along a third direction and a second support base (203) at both ends; the connecting part (202) and the sleeve (102) are arranged along the third direction, and the connecting part (202) has an insertion rod (204) extending along the third direction on the outer wall of the side facing the sleeve (102), and the sleeve (102) has a through insertion cavity (104) inside, and the insertion rod (204) is rotatably disposed in the insertion cavity (104); any two of the first direction, the second direction and the third direction intersect.

2. The protection device according to claim 1, characterized in that, The first support base (103) and the second support base (203) are both rotatably provided with positioning elements (3) along the third direction; The positioning member (3) has a locking cavity (303) on the outer wall of the side opposite to the first support (103) and the second support (203).

3. The protection device according to claim 2, characterized in that, The first support base (103) has a first rotating cavity (106) on the outer wall facing the positioning member (3), and the positioning member (3) has a rotating shaft (301) on the outer wall facing the first support base (103). In the corresponding first support (103) and positioning member (3), the rotating shaft (301) is rotatably disposed in the first rotating cavity (106); The second support (203) has a second rotating cavity (206) on the outer wall facing the positioning member (3). In the corresponding second support (203) and positioning member (3), the rotating shaft (301) is rotatably disposed in the second rotating cavity (206).

4. The protection device according to claim 3, characterized in that, The first rotating cavity (106) has a first limiting groove (107) on its cavity sidewall, and the second rotating cavity (206) has a second limiting groove (207) on its cavity sidewall; the rotating shaft (301) has a protruding ring (302) on its sidewall. In the corresponding first support (103) and positioning member (3), the convex ring (302) is rotatably disposed in the first limiting groove (107); And / or, in the corresponding second support (203) and positioning member (3), the convex ring (302) is rotatably disposed in the second limiting groove (207).

5. The protective device according to any one of claims 1-4, characterized in that, The protective device includes a plurality of first reinforcing ribs (105), one end of which is connected to the first support body (101) and the other end of which is connected to the first support base (103).

6. The protective device according to any one of claims 1-4, characterized in that, The protective device includes a plurality of second reinforcing ribs (205), one end of which is connected to the second support body (201) and the other end of which is connected to the second support base (203).

7. The protective device according to any one of claims 2-4, characterized in that, In the corresponding first support base (103) and positioning member (3), the positioning member (3) is detachably installed on the first support base (103); And / or, in the corresponding second support (203) and positioning element (3), the positioning element (3) is detachably mounted on the second support (203).

8. The protective device according to any one of claims 1-4, characterized in that, A shock-absorbing layer is provided on the outer wall of the connecting part (202) and the sleeve (102).

9. The protective device according to any one of claims 1-4, characterized in that, Both the first support member (1) and the second support member (2) are made of alloy material.

10. The protective device according to any one of claims 1-4, characterized in that, The outer walls of the first support member (1) and the second support member (2) are coated.

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