Rail crossing device and using method

Abstract

The invention discloses a rail crossing device and a using method, and belongs to the technical field of workshop transportation equipment. The device comprises a supporting bottom plate, a supporting rod, a rotary supporting structure, a reset structure, a left triggering mechanism and a right triggering mechanism, the supporting rod is installed above the supporting bottom plate through the rotary supporting structure, a connecting center shaft of the rotary supporting structure deviates rightwards, and stable supporting and automatic reset of the supporting rod are achieved in cooperation with the reset structure; when the rail transport vehicle passes, the left triggering mechanism or the right triggering mechanism drives the supporting rod to contract, and operation of the rail transport vehicle is not affected. After the rail transport vehicle leaves, the supporting rod automatically resets to a supporting state, a rail groove is filled up, and it is guaranteed that other vehicles perpendicular to or intersecting with the rail direction stably pass through; the device adopts a pure mechanical structure, does not need external power, can be bidirectionally matched with a rail transport vehicle, solves the problem of vehicle bumping caused by a rail groove, is stable in structure and high in applicability, and has remarkable economic benefits.

Description

Technical Field

[0001] This invention belongs to the technical field of workshop transportation equipment, and relates to a track crossing device and its usage method. Background Technology

[0002] In workshop production settings, rail transport vehicles are commonly used for material transfer. After the rails are installed on the ground, grooves are formed on one side of each of the two rails to accommodate the rail wheels of the rail transport vehicle. However, these grooves can obstruct other vehicles moving perpendicular to or intersecting the rails. Vehicles passing through the grooves will experience significant bumps, severely affecting operational stability and potentially leading to material overturning, equipment damage, and other problems.

[0003] Existing technologies have many shortcomings in their solutions to track crossing or trench problems. For example, some solutions use movable rail sections to switch track paths, but these require manual or electric drive control, are structurally complex, and have high maintenance costs. Other solutions add cross-track platforms to enable vehicle passage, but these are not compatible with the normal operation of rail transport vehicles and have poor versatility.

[0004] Currently, there is a lack of a device that is simple in structure, requires no additional power, can ensure the smooth passage of rail transport vehicles, and can also solve the problem of bumpy terrain in the trench. Summary of the Invention

[0005] The purpose of this invention is to provide a track crossing device and its usage method to solve the problem of track grooves causing other vehicles to bump in the prior art.

[0006] The technical solution adopted in this invention is as follows: A track-crossing device includes a supporting base plate, a supporting rod, a slewing support structure, a reset structure, a left triggering mechanism, and a right triggering mechanism. The supporting rod is positioned above the supporting base plate to fill track grooves and provide a support surface for other vehicles. The fixed end of the slewing support structure is fixedly connected to the supporting base plate, while the rotating end is rotatably connected to the supporting rod. The central axis connecting the rotating end and the supporting rod is offset to the right relative to the central axis connecting the rotating end and the supporting base plate. This offset design, combined with the reset structure, ensures good stability of the supporting rod in its supported state, preventing it from easily swaying or shrinking under vehicle pressure.

[0007] One end of the reset structure is fixedly connected to the upper surface of the support base plate, and the other end is connected to the lower surface of the support rod. Its core function is to provide reset power for the support rod, ensuring that the support rod can quickly return to its supported state after the rail transport vehicle passes. The fixed end of the left trigger mechanism is fixedly connected to the support base plate, and the trigger end is used to abut against the rail wheel of the rail transport vehicle. The transmission end is connected to one end of the support rod. When the rail transport vehicle travels from left to right, the left trigger mechanism drives the support rod to retract.

[0008] The fixed end of the right triggering mechanism is fixedly connected to the support base plate, and the rotating end abuts against the other end of the support rod. The right triggering mechanism is equipped with a torsion component, which makes the rotating end always rotate in the direction of the support rod. The force generated by the torsion component is less than the force generated by the reset structure, which ensures that the right triggering mechanism can trigger the retraction of the support rod while avoiding affecting the stable support of the support rod.

[0009] Furthermore, this device also includes a starting structure, which comprises a fixed column and a starting spring. The lower end of the fixed column is fixed to the support base plate, and the lower end of the starting spring is fixed to the fixed column, with a gap between the upper end and the lower end face of the support rod. When the support rod retracts, it compresses the starting spring. The starting spring assists the reset structure in providing initial reset force to the support rod, thereby accelerating the reset speed.

[0010] Furthermore, the slewing support structure includes a slewing support base and a slewing support block. The slewing support base is fixed to the support base plate, and both ends of the slewing support block are rotatably connected to the slewing support base and the support rod, respectively. The offset angle of the connecting central axis is 5-30°, which ensures the support stability and retraction flexibility of the support rod. A first limiting block is provided on the right side of the slewing support block, which cooperates with the slewing support base to limit the deflection angle and further improve the support stability.

[0011] Furthermore, the reset structure includes a fixed block and a reset spring. The reset spring is detachably installed between two adjacent fixed blocks. The force it generates is greater than the sum of the frictional force of the left triggering mechanism and the leftward pushing force of the right triggering mechanism, ensuring that the support rod can overcome resistance and reset smoothly.

[0012] Furthermore, the left triggering mechanism includes a left trigger rod base, a left trigger rod, and a connecting rod. The top of the left trigger rod has an arc-shaped structure, which can reduce wear with the track wheel. The right triggering mechanism includes a right trigger rod base, a right trigger rod, and a torsion spring. The top of the right trigger rod has a circular structure. A second limiting block is provided on the support base plate to limit the rotation angle of the right trigger rod and prevent jamming.

[0013] Furthermore, the present invention also discloses a method for using the track crossing device, comprising five steps: installing the device, the track transport vehicle passing from left to right and triggering retraction, resetting the support rod, the track transport vehicle passing from right to left and triggering retraction, and resetting the support rod, thereby enabling the track transport vehicle to pass through other vehicles without obstruction.

[0014] The working principle of this invention: The core working principle of this device is to achieve automatic switching between the retracted state and the supported state of the support rod through the linkage of the mechanical structure. When the rail transport vehicle passes by, the pressure of the rail wheel triggers the left or right triggering mechanism, causing the support rod to overcome the tension of the reset structure and rotate to the left and downward through the rotary support structure to the retracted state, making way for the rail wheel to pass.

[0015] The rightward offset design of the connecting center axis of the slewing support structure is key to achieving stable support. This offset, combined with the tension of the reset structure, ensures that the support rod achieves a stable mechanical balance in the supported state, preventing easy deflection or contraction even when run over by other vehicles. Simultaneously, the first limiting block further restricts the deflection angle of the slewing support block, ensuring the stability of the supported state.

[0016] The reset structure provides a continuous reset force to the support rod. After the rail transport vehicle passes, the reset force drives the support rod to reset. The starting spring of the starting structure accumulates energy when the support rod retracts, assisting in the reset, accelerating the reset speed, and avoiding affecting the passage of subsequent vehicles.

[0017] The torsion assembly of the right trigger mechanism ensures that the right trigger rod always contacts the support rod, guaranteeing effective retraction when the rail transport vehicle travels from right to left. Simultaneously, the force of the torsion assembly is less than that of the reset structure, preventing it from affecting the stable support of the support rod. The arc-shaped top of the left trigger mechanism and the circular top of the right trigger mechanism are designed to reduce contact wear with the rail wheels, extending the service life of the device.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A track crossing device and its usage method, which, through the design of a 5-30° offset angle of the rotary support structure and the tension of the reset spring, enables the support rod to form a stable mechanical balance in the supported state. When a vehicle runs over it, the maximum deflection is ≤0.4mm and the reset time is ≤1.5s, which completely solves the problem of bumps caused by track grooves and ensures smooth vehicle passage.

[0019] 2. In this invention, the reset spring adopts a reasonable tension range of 500-2000N, which can overcome the friction and thrust of the device, avoid failure due to excessive stress, achieve a 100% reset success rate, and withstand 100,000 cycles of use, meeting the high-frequency passage requirements of the workshop.

[0020] 3. This invention provides a variety of material options, such as Q355 steel, 304 stainless steel, and Q235 steel, to suit different workshop scenarios, such as heavy-duty high-frequency, humid and corrosive, and light-duty simple, thereby improving the versatility and applicability of the device.

[0021] 4. In this invention, under extreme working conditions such as being crushed by a vehicle with a load of 1.5 times the rated load and undergoing 100,000 cycles of operation, the core components exhibit small deformation and a performance decay rate of ≤8%, while still maintaining stable support and switching functions, with a service life of 5-10 years, significantly improving the reliability of the device.

[0022] 5. In this invention, a purely mechanical structure is adopted, requiring no external power, and the installation and maintenance cost is 60% lower than that of existing electric reset devices; the core components have a simple structure, are easy to disassemble and replace, and significantly reduce workshop operation and maintenance costs.

[0023] 6. In this invention, the coordinated design of the left triggering mechanism and the right triggering mechanism can accommodate the bidirectional passage of rail transport vehicles without additional adjustments, while also meeting the passage requirements of other vehicles perpendicular or intersecting the track direction, realizing barrier-free collaborative operation of the two types of vehicles and improving workshop transportation efficiency.

[0024] 7. In this invention, compared with existing technologies such as movable rail sections and electric reset, this patent achieves the technical effects of simplified structure, reduced cost, and improved performance through the combined design of offset slewing support and mechanical trigger reset. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments, experimental examples, and comparative examples will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural schematic diagram of the track crossing device of the present invention; Figure 2 This is a top view of the track-crossing device of the present invention; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of BB; Figure 4 This is a front view structural schematic diagram of the track crossing device of the present invention; Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of AA; Figure 6 This is a partial structural schematic diagram of the track wheel passing through the track over the track device of the present invention; Figure 7 This is a three-dimensional structural diagram of the track crossing device of the present invention (used to visually demonstrate the specific structure of the present invention).

[0026] Reference numerals: 1-Support base plate, 2-Support rod, 3-Railway wheel, 4-Fixing column, 5-Starting spring, 6-Rotating support seat, 7-Rotating support block, 8-First limiting block, 9-Fixing block, 10-Reset tension spring, 11-Left trigger rod base, 12-Left trigger rod, 13-Connecting rod, 14-Right trigger rod base, 15-Right trigger rod, 16-Torsion spring, 17-Second limiting block, 18-Opening slot. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings, embodiments, experimental examples, and comparative examples. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0031] I. Implementation Examples Example 1 This invention provides a track crossing device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, it includes a support base plate 1, a support rod 2, a rotary support structure, a reset structure, a left trigger mechanism, and a right trigger mechanism; the support rod 2 is located above the support base plate 1; The fixed end of the slewing support structure is fixedly connected to the support base plate 1, and the rotating end of the slewing support structure is rotatably connected to the support rod 2. The central axis connecting the rotating end of the slewing support structure and the support rod 2 is offset to the right relative to the central axis connecting the rotating end and the support base plate 1. One end of the reset structure is fixedly connected to the upper end face of the support base plate 1, and the other end of the reset structure is connected to the lower end face of the support rod 2. The reset structure is used to provide reset power for the support rod 2. The fixed end of the left triggering mechanism is fixedly connected to the support base plate 1, the triggering end of the left triggering mechanism is used to abut against the rail wheel 3 of the rail transport vehicle, and the transmission end of the left triggering mechanism is connected to one end of the support rod 2. The fixed end of the right triggering mechanism is fixedly connected to the support base plate 1, and the rotating end of the right triggering mechanism abuts against the other end of the support rod 2. The right triggering mechanism is provided with a torsion component, which is used to make the rotating end of the right triggering mechanism always rotate in the direction of the support rod 2, and the force generated by the torsion component is less than the force generated by the reset structure. When the track wheel 3 of the rail transport vehicle abuts the left triggering mechanism or the right triggering mechanism, the support rod 2 moves to the left and downward to the retracted state through the slewing support structure; when the track wheel 3 of the rail transport vehicle leaves, the support rod 2 is reset to the supporting state under the action of the reset structure.

[0032] It also includes a starting structure, which includes a fixed column 4 and a starting spring 5; the lower end face of the fixed column 4 is fixedly connected to the upper end face of the support base plate 1, the lower end of the starting spring 5 is fixed to the fixed column 4, and there is a gap between the upper end face of the starting spring 5 and the lower end face of the support rod 2; when the support rod 2 is in the retracted state, the lower end face of the support rod 2 contacts the upper end face of the starting spring 5 and compresses the starting spring 5.

[0033] The slewing support structure includes a slewing support base 6 and a slewing support block 7; the slewing support base 6 is fixedly connected to the support base plate 1, the lower end of the slewing support block 7 is rotatably connected to the slewing support base 6, and the upper end of the slewing support block 7 is rotatably connected to the support rod 2; the central axis connecting the upper end of the slewing support block 7 and the support rod 2 is offset to the right by 5-30° relative to the central axis connecting the lower end of the slewing support block 7 and the slewing support base 6.

[0034] The right side of the slewing support block 7 is provided with a first limiting block 8, which cooperates with the upper end face of the slewing support seat 6 to limit the angle of the slewing support block 7 to the right.

[0035] The reset structure includes at least two fixing blocks 9 and a reset spring 10; one fixing block 9 is fixedly connected to the upper end face of the support base plate 1, and the other fixing block 9 is connected to the lower end face of the support rod 2; the reset spring 10 is detachably installed between the two fixing blocks 9, and the force generated by the reset spring 10 is greater than the sum of the friction force of the left triggering mechanism and the thrust generated to the left by the right triggering mechanism.

[0036] The left triggering mechanism includes a left trigger rod base 11, a left trigger rod 12, and a connecting rod 13; the left trigger rod base 11 is fixedly connected to the support base plate 1, the left trigger rod 12 is rotatably connected to the left trigger rod base 11, the lower part of the left trigger rod 12 is rotatably connected to one end of the connecting rod 13, and the other end of the connecting rod 13 is rotatably connected to the lower part of one end of the support rod 2; the top of the left trigger rod 12 is arc-shaped on the side away from the support rod 2.

[0037] The right triggering mechanism includes a right trigger rod base 14, a right trigger rod 15, and a torsion spring 16; the right trigger rod base 14 is fixedly connected to the support base plate 1, the lower part of the right trigger rod 15 is rotatably connected to the right trigger rod base 14, and the torsion spring 16 is installed between the right trigger rod base 14 and the right trigger rod 15, and the torsion spring 16 is a torsion component; the top of the right trigger rod 15 has a circular structure.

[0038] The upper surface of the support base plate 1 is provided with a second limiting block 17, which is located below the right trigger rod 15 and is used to limit the downward rotation angle of the right trigger rod 15.

[0039] The support base plate 1 has an opening slot 18 for the left trigger mechanism to rotate, and the support rod 2 has an opening slot 18 for the transmission end of the left trigger mechanism to rotate; the support base plate 1 and the support rod 2 respectively have opening slots 18 for the rotating end of the rotary support structure to rotate.

[0040] The specific implementation of the present invention includes a supporting base plate, a supporting rod, two sets of rotary support structures, two sets of reset structures, a left triggering mechanism, and a right triggering mechanism; the supporting rod is a long strip of metal plate that covers the width of the track groove to ensure that other vehicles pass smoothly.

[0041] The slewing support structure includes a slewing support base and a slewing support block. The slewing support base is fixed to the support base plate by bolts. The lower end of the slewing support block is rotatably connected to the slewing support base by a pin, and the upper end is rotatably connected to the support rod by a pin. The connecting pin at the upper end of the slewing support block is offset to the right by 15° relative to the connecting pin at the lower end. A first limiting block is welded to the right side of the slewing support block. When the support rod is in the supported state, the first limiting block is in contact with the upper surface of the slewing support base, restricting the slewing support block from further deflecting to the right and ensuring the support stability of the support rod.

[0042] The reset structure includes two fixed blocks and a reset spring. One fixed block is welded to the support base plate, and the other fixed block is welded to the support rod. The two ends of the reset spring are hooked onto the two fixed blocks respectively. The tension of the reset spring is greater than the sum of the friction force of the left trigger mechanism and the leftward thrust of the right trigger mechanism, ensuring sufficient reset power.

[0043] The left triggering mechanism includes a left trigger rod base, a left trigger rod, and a connecting rod. The left trigger rod base is fixed to the support base plate with bolts. The left trigger rod and the left trigger rod base are rotatably connected by a pin. The lower part of the left trigger rod is rotatably connected to one end of the connecting rod by a pin, and the other end of the connecting rod is rotatably connected to the lower left end of the support rod by a pin. The top of the left trigger rod, away from the support rod, has an arc-shaped structure to reduce wear when in contact with the track wheel.

[0044] The right triggering mechanism includes a right trigger rod base, a right trigger rod, and a torsion spring. The right trigger rod base is fixed to the support base plate with bolts. The lower part of the right trigger rod is rotatably connected to the right trigger rod base via a pin. The torsion spring is fitted onto the pin, with its two ends abutting against the right trigger rod base and the right trigger rod respectively, ensuring that the right trigger rod always rotates towards the support rod. The top of the right trigger rod has a circular structure, and a second limiting block is welded to the support base plate, located below the right trigger rod, to limit the maximum downward rotation angle of the right trigger rod and prevent it from jamming with the support rod.

[0045] As the railcar's wheels travel from left to right, they press against the arc-shaped top of the left trigger lever. The left trigger lever rotates left and upward around its base, pulling the left end of the support rod left and downward via a connecting rod. The support rod, through the slewing support structure, tilts left and downward to a retracted state, allowing the railcar to pass smoothly. After the railcar passes, the support rod, under the tension of the return spring, rotates right and upward around the slewing support structure, returning to a support state flush with the ground, filling the trench.

[0046] When the railcar's track wheels travel from right to left, the track wheels press against the circular top of the right trigger rod, overcoming the force of the torsion spring and pushing the right trigger rod to rotate downwards. At the same time, the right trigger rod pushes the right end of the support rod to move to the left and downwards, causing the support rod to retract as a whole. After the track wheels pass, the support rod returns to its original position under the action of the return spring.

[0047] Example 2 This invention provides a track crossing device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the specific implementation method of this embodiment is as follows: The difference between this embodiment and Embodiment 1 is that two sets of starting structures are added. The starting structure includes a fixed column and a starting spring. The fixed column is welded to the support base plate, and the lower end of the starting spring is sleeved on the fixed column and welded to it. A 5mm gap is left between the upper end of the starting spring and the lower end face of the support rod.

[0048] When the support rod retracts to its lowest position, the lower end of the support rod compresses the starting spring, which accumulates elastic potential energy. After the rail transport vehicle passes, the elastic force of the starting spring and the tension of the return spring work together to quickly reset the support rod, shortening the reset time and improving traffic efficiency.

[0049] Example 3 This invention provides a track crossing device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the specific implementation method of this embodiment is as follows: The difference between this embodiment and embodiment 1 is that the connecting pin at the upper end of the slewing support block is offset to the right by 5° relative to the connecting pin at the lower end. The reset spring is a high-strength alloy spring with greater tension, which is suitable for other vehicles with heavy loads to pass through, ensuring that the support rod will not easily retract under the pressure of the vehicle and ensuring the stability of the support.

[0050] Example 4 This invention provides a track crossing device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the specific implementation method of this embodiment is as follows: The difference between this embodiment and embodiment 1 is that the connecting pin at the upper end of the rotary support block is offset to the right by 30° relative to the connecting pin at the lower end, and the connecting rod of the left trigger mechanism is an arc-shaped metal rod, which adapts to the rotation trajectory of the support rod, reduces the wear of the connecting rod and the support rod, and extends the service life of the device.

[0051] Example 5 The present invention discloses a method for using a track crossing device, employing the device of Embodiment 2, with the following steps: Step 1: Install two sets of track-crossing devices at the bottom of the grooves of the two tracks respectively. The two sets of track-crossing devices are set up correspondingly, and the gap between the two sets of track-crossing devices is adapted to the wheelbase of the workshop vehicles. Step 2: When the track wheel 3 of the rail transport vehicle moves from left to right, the track wheel 3 abuts against the arc-shaped top of the left trigger rod 12. The left trigger rod 12 drives the connecting rod 13 to move, causing the support rod 2 to move to the left and down to the retracted state. The starting spring 5 is compressed, and the rail transport vehicle passes through the rail-crossing device. Step 3: After the rail wheels 3 of the rail transport vehicle pass through, the support rod 2, under the combined action of the return spring 10 and the starting spring 5, quickly returns to the support state that is flush with the ground. Step 4: When the track wheel 3 of the rail transport vehicle moves from right to left, the track wheel 3 abuts against the circular top of the right trigger rod 15, pushing the right trigger rod 15 to move, causing the support rod 2 to move to the left and down to the retracted state, the starting spring 5 is compressed, and the rail transport vehicle passes through the rail crossing device. Step 5: After the rail wheels 3 of the rail transport vehicle pass, the support rod 2 returns to its supporting state under the combined action of the return spring 10 and the starting spring 5, allowing other vehicles to pass smoothly.

[0052] II. Experimental Examples Experiment Example 1: Correlation Test between Offset Angle of Slewing Brace Structure and Brace Stability Experimental Objective Verify the support stability of the slewing bearing structure within the offset angle range of 5-30°, determine the optimal angle range, and provide data support for the parameter range.

[0053] Experimental conditions Test samples: Six sets of track-crossing devices were prepared, with only the offset angle of the connecting center axis of the rotary support block being different, namely 0°, 5°, 15°, 25°, 30° and 35°, respectively. The rest of the structure and materials were completely identical.

[0054] Testing equipment: high-precision angle sensor, force sensor, displacement measuring instrument, and heavy-duty vehicle (rated load 5t).

[0055] Test conditions: Six sets of samples were installed in the track groove. The support rod was rolled vertically by a vehicle with rated load at a speed of 5 km / h. The maximum deflection of the support rod, the reset time, and the support stability score were recorded (10 points in total, 10 points for no shaking, 7-9 points for slight shaking, 4-6 points for obvious shaking, and 0-3 points for severe shaking).

[0056] Table 1 (Experimental Results of Example 1) Experimental conclusions When the offset angle is within the range of 5-30°, the maximum deflection of the support rod is ≤0.4mm, the reset time is ≤1.5s, and the support stability score is ≥8 points, meeting the requirements for smooth vehicle passage in the workshop; among them, 15° is the optimal angle, with the best support stability. When the offset angle is less than 5°, the support stability is poor, and it is easy to cause shaking when vehicles run over it; when it is greater than 30°, the deflection increases and the reset efficiency decreases. Therefore, 5-30° is determined to be a reasonable parameter range.

[0057] Experiment Example 2: Test of the range of tension values ​​for a return spring Experimental Objective Determine the appropriate tension range for the reset spring to ensure that it can overcome the friction and thrust of the device while achieving fast and reliable reset.

[0058] Experimental conditions Test samples: Five sets of track-crossing devices were prepared, with reset spring tensions of 300N, 500N, 1000N, 2000N, and 2500N, respectively, and the rest of the structure was the same.

[0059] Testing equipment: tensile tester, timer, rail transport vehicle (3t weight).

[0060] Test conditions: A rail transport vehicle passes through the rail-crossing device from the left and right sides respectively, and the success rate of the support rod retracting and resetting, the resetting time, and the fatigue life of the tension spring (whether it fails after 100,000 cycles of retraction and resetting) are recorded.

[0061] Table 2 (Experimental results of Experiment Example 2) Experimental conclusions When the tension of the reset spring is within the range of 500-2000N, the reset success rate is ≥98%, the average reset time is ≤1.5s, and it can withstand 100,000 cycles of use, meeting the high-frequency passage requirements of the workshop. When the tension is less than 500N, it cannot completely overcome the friction and thrust of the device, resulting in a low reset success rate; when the tension is greater than 2000N, the spring stress is too high, making it prone to breakage and failure. Therefore, 500-2000N is determined to be a reasonable tension range, with 1000N being the optimal tension value, balancing reset efficiency and service life.

[0062] Experiment Example 3: Material Performance Testing of Core Components Experimental Objective By comparing the strength, wear resistance, and service life of support base plates and support rods made of different materials, the applicable scenarios can be clearly identified.

[0063] Experimental conditions Test samples: Three sets of track-crossing devices were prepared. The core components were made of Q235 ordinary carbon structural steel, Q355 low alloy high strength steel, and 304 stainless steel, respectively, while the rest of the structure was the same.

[0064] Testing equipment: universal testing machine, abrasion testing machine, salt spray test chamber.

[0065] Test indicators: yield strength, abrasion resistance (after 100,000 rolling cycles), corrosion resistance (after 72 hours of salt spray test), and estimated service life.

[0066] Table 3 (Experimental results of Experiment Example 3) Experimental conclusions Q355 steel has high yield strength, good wear resistance, and moderate cost, making it a preferred material for most heavy-duty, high-frequency traffic scenarios in workshops.

[0067] 304 stainless steel has excellent corrosion resistance and a long service life, making it suitable for workshop environments with humid conditions and corrosive gases, but it is also more expensive.

[0068] Q235 steel is inexpensive, but has poor strength and wear resistance, making it suitable for simple workshops with light loads and low frequency of traffic.

[0069] Experiment Example 4: Stability Test under Extreme Operating Conditions Experimental Objective Verify the stability of the track crossing device under extreme working conditions such as heavy crushing and long-term wear, and improve the reliability of the technical solution.

[0070] Experimental conditions Test sample: a track-crossing device made of Q355 steel, with a 15° offset angle and a 1000N tension spring.

[0071] Testing equipment: heavy-duty vehicle (7.5t, 1.5 times the rated load), cyclic wear tester, high-precision displacement meter.

[0072] Test Condition 1: Overweight vehicles continuously run over the device 500 times at a speed of 3 km / h, and the deformation of the support rod and whether the reset function is normal are recorded.

[0073] Test Condition 2: The cyclic wear tester simulates 100,000 cycles of alternating operation of rail transport vehicle passage and vehicle crushing, and records the wear amount of each component of the device and the changes in support stability.

[0074] Table 4 (Experimental results of Experiment Example 4) Experimental conclusions Under extreme working conditions of heavy crushing and long-term wear, the track-crossing device exhibits minimal deformation of its core components, normal reset function, and low performance degradation rate, maintaining stable support and switching performance to meet the long-term high-intensity use requirements of the workshop.

[0075] III. Comparative Example Comparative Example 1: Track crossing device without offset angle The offset angle of the connecting center axis of the slewing support structure is set to 0°, and the rest of the structure is the same as that of this patent.

[0076] Test results: When a vehicle runs over it, the maximum deflection of the support rod is 1.8mm, with obvious shaking and a reset time of 2.3s. After repeated use, the support becomes unstable and jams.

[0077] Comparative conclusion: The offset angle design (5-30°) of this patent is a key technical feature for achieving stable support, which is significantly superior to structures without offset angles.

[0078] Comparative Example 2: Existing electric reset track crossing device (CN106629390A) The existing technology uses an electric push rod + spring reset structure, which is compared with the pure mechanical reset structure of this patent.

[0079] Test results: The electric reset device requires an external power supply, has high installation and maintenance costs, and cannot reset after power failure; this patent does not require an external power supply, has 60% lower installation and maintenance costs, and can still work normally in the event of power failure or malfunction.

[0080] Comparative conclusion: The purely mechanical reset structure of this patent is significantly superior to existing electric reset devices in terms of economy and reliability.

[0081] Comparative Example 3: Track crossing device with insufficient return spring tension The tension of the reset spring is set to 300N (lower than the 500N lower limit of this patent), and the rest of the structure is the same.

[0082] Test results: The reset success rate was only 75%, and in some cases the support rod could not be fully reset, causing the vehicle to ride bumpy; the tension spring deformed and failed after 100,000 cycles.

[0083] Comparative conclusion: The 500-2000N tensile force range specified in this patent is the key to ensuring the reliability of reset and service life. Insufficient tensile force will seriously affect the performance of the device.

[0084] Comparative Example 4: Rail crossing device made of ordinary cast iron The supporting base plate and supporting rod are made of ordinary cast iron, and the rest of the structure is the same as that of this patent.

[0085] Test results: After being run over by an overweight vehicle 200 times, the support rod developed cracks; after 10,000 cycles of operation, the support base plate was severely worn and could not be used normally.

[0086] Comparative conclusion: The Q355 steel and 304 stainless steel materials selected in this patent are significantly superior to ordinary cast iron in terms of strength and wear resistance, and can meet the requirements of long-term use.

[0087] The above description is only a preferred embodiment, experimental example, and comparative example of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A track crossing device, characterized in that, It includes a support base plate (1), a support rod (2), a rotary support structure, a reset structure, a left triggering mechanism, and a right triggering mechanism; the support rod (2) is located above the support base plate (1); The fixed end of the rotary support structure is fixedly connected to the support base plate (1), and the rotating end of the rotary support structure is rotatably connected to the support rod (2). The central axis connecting the rotating end of the rotary support structure and the support rod (2) is offset to the right relative to the central axis connecting the rotating end and the support base plate (1). One end of the reset structure is fixedly connected to the upper end face of the support base plate (1), and the other end of the reset structure is connected to the lower end face of the support rod (2). The reset structure is used to provide reset power for the support rod (2). The fixed end of the left triggering mechanism is fixedly connected to the support base plate (1), the triggering end of the left triggering mechanism is used to abut against the rail wheel (3) of the rail transport vehicle, and the transmission end of the left triggering mechanism is connected to one end of the support rod (2). The fixed end of the right triggering mechanism is fixedly connected to the support base plate (1), and the rotating end of the right triggering mechanism abuts against the other end of the support rod (2). The right triggering mechanism is provided with a torsion component. The torsion component is used to make the rotating end of the right triggering mechanism always rotate in the direction of the support rod (2), and the force generated by the torsion component is less than the force generated by the reset structure. When the track wheel (3) of the rail transport vehicle comes into contact with the left triggering mechanism or the right triggering mechanism, the support rod (2) moves to the left and down to the retracted state through the slewing support structure; when the track wheel (3) of the rail transport vehicle leaves, the support rod (2) is reset to the support state under the action of the reset structure.

2. The track crossing device according to claim 1, characterized in that, It also includes a starting structure, which includes a fixed column (4) and a starting spring (5); the lower end face of the fixed column (4) is fixedly connected to the upper end face of the support base plate (1), the lower end of the starting spring (5) is fixed to the fixed column (4), and there is a gap between the upper end face of the starting spring (5) and the lower end face of the support rod (2); when the support rod (2) is in a retracted state, the lower end face of the support rod (2) contacts the upper end face of the starting spring (5) and compresses the starting spring (5).

3. The track crossing device according to claim 1, characterized in that, The slewing support structure includes a slewing support base (6) and a slewing support block (7); the slewing support base (6) is fixedly connected to the support base plate (1), the lower end of the slewing support block (7) is rotatably connected to the slewing support base (6), and the upper end of the slewing support block (7) is rotatably connected to the support rod (2); the central axis connecting the upper end of the slewing support block (7) and the support rod (2) is offset to the right by 5-30° relative to the central axis connecting the lower end of the slewing support block (7) and the slewing support base (6).

4. A track crossing device according to claim 3, characterized in that, The right side of the slewing support block (7) is provided with a first limiting block (8), which cooperates with the upper end face of the slewing support seat (6) to limit the angle of the slewing support block (7) to the right.

5. A track crossing device according to claim 1, characterized in that, The reset structure includes at least two fixing blocks (9) and a reset spring (10); one fixing block (9) is fixedly connected to the upper end face of the support base plate (1), and the other fixing block (9) is connected to the lower end face of the support rod (2); the reset spring (10) is detachably installed between two adjacent fixing blocks (9), and the force generated by the reset spring (10) is greater than the sum of the friction force of the left triggering mechanism and the thrust generated to the left by the right triggering mechanism.

6. A track crossing device according to claim 1, characterized in that, The left triggering mechanism includes a left trigger rod base (11), a left trigger rod (12), and a connecting rod (13); the left trigger rod base (11) is fixedly connected to the support base plate (1), the left trigger rod (12) is rotatably connected to the left trigger rod base (11), the lower part of the left trigger rod (12) is rotatably connected to one end of the connecting rod (13), and the other end of the connecting rod (13) is rotatably connected to the lower part of one end of the support rod (2); the top of the left trigger rod (12) away from the support rod (2) has an arc-shaped structure.

7. A track crossing device according to claim 1, characterized in that, The right triggering mechanism includes a right trigger rod base (14), a right trigger rod (15), and a torsion spring (16); the right trigger rod base (14) is fixedly connected to the support base plate (1), the lower part of the right trigger rod (15) is rotatably connected to the right trigger rod base (14), the torsion spring (16) is installed between the right trigger rod base (14) and the right trigger rod (15), and the torsion spring (16) is the torsion component; the top of the right trigger rod (15) has a circular structure.

8. A track crossing device according to claim 7, characterized in that, The upper surface of the support base plate (1) is provided with a second limiting block (17), which is located below the right trigger rod (15) and is used to limit the downward rotation angle of the right trigger rod (15).

9. A track crossing device according to any one of claims 1-8, characterized in that, The support base plate (1) has an opening slot (18) for the left trigger mechanism to rotate, and the support rod (2) has an opening slot (18) for the transmission end of the left trigger mechanism to rotate; the support base plate (1) and the support rod (2) respectively have opening slots (18) for the rotating end of the rotary support structure to rotate.

10. A method of using a track crossing device, characterized in that, The application of the track crossing device according to any one of claims 1-9 includes the following steps: Step 1: Install the track-crossing device at the bottom of the track groove; Step 2: When the rail wheel (3) of the rail transport vehicle moves from left to right, the rail wheel (3) abuts against the trigger end of the left trigger mechanism. The left trigger mechanism drives the support rod (2) to move to the left and down through the rotary support structure to the retracted state, and the rail transport vehicle passes through. Step 3: After the rail wheels (3) of the rail transport vehicle pass through, the support rod (2) is reset to the support state under the action of the reset structure; Step 4: When the rail wheel (3) of the rail transport vehicle moves from right to left, the rail wheel (3) abuts against the rotating end of the right triggering mechanism. The right triggering mechanism drives the support rod (2) to move to the left and down through the rotary support structure to the retracted state, and the rail transport vehicle passes through. Step 5: After the rail wheels (3) of the rail transport vehicle pass through, the support rod (2) is reset to the support state under the action of the reset structure.

Images