Railway rail crossing device and method of use

Abstract

The application discloses a track passing 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; the connecting center shaft of the rotary supporting structure is offset to the right; the stable support and automatic reset of the supporting rod are realized in cooperation with the reset structure; when the track transportation vehicle passes, the supporting rod is driven to contract through the left triggering mechanism or the right triggering mechanism, and the track transportation vehicle operation is not affected; after the track transportation vehicle leaves, the supporting rod is automatically reset to the supporting state, the track groove is filled, and the stable passing of other vehicles perpendicular to or intersecting with the track direction is ensured; the device adopts a pure mechanical structure and does not need external power, can be bidirectionally adapted to the track transportation vehicle, solves the vehicle bumping problem caused by the track groove, is stable in structure, high in applicability, and has remarkable economic benefits.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of workshop transportation equipment, and relates to a track crossing device and a use method. BACKGROUND

[0002] In the production scene of a workshop, a track transport vehicle is often arranged for material transfer. After the track is installed on the ground, a groove is formed on one side of the two tracks to adapt to the track wheels of the track transport vehicle. However, the groove will hinder other vehicles moving vertically or crossing the track direction. When the vehicle passes through the groove, it will produce obvious bumping, which seriously affects the running stability, and may even cause material overturning, equipment damage and other problems.

[0003] In the prior art, there are many deficiencies in the solutions to the track crossing or groove problem. For example, some solutions use movable rail sections to switch track paths, but they need manual or electric drive control, and the structure is complex, with high maintenance cost. Another solution is to add a cross-rail platform to realize vehicle passing, but it cannot adapt to the normal operation of the track transport vehicle, and has poor versatility.

[0004] At present, there is a lack of a device with simple structure, without the need for additional power, which can ensure smooth passage of the track transport vehicle and solve the bumping problem of the groove. SUMMARY

[0005] The purpose of the present application is to provide a track crossing device and a use method to solve the problem of bumping of other vehicles caused by the track groove in the prior art.

[0006] The technical scheme adopted by the present application is as follows:

[0007] A track crossing device, comprising a support bottom plate, a support rod, a rotary support structure, a reset structure, a left trigger mechanism and a right trigger mechanism. The support rod is arranged above the support bottom plate and is used to fill the track groove to provide a support surface for other vehicles. The fixed end of the rotary support structure is fixedly connected with the support bottom plate, the rotating end is rotatably connected with the support rod, and the connection center axis of the rotating end and the support rod is offset to the right relative to the connection center axis of the rotating end and the support bottom plate. This offset design cooperates with the reset structure to make the support rod have good stability in the support state and not easily shake or contract due to vehicle rolling.

[0008] One end of the reset structure is fixedly connected with the upper end surface of the support bottom plate, and the other end is connected with the lower end surface of the support rod. The core function of the reset structure is to provide a reset power for the support rod to ensure that the support rod can quickly recover to the support state after the track transport vehicle passes. The fixed end of the left trigger mechanism is fixedly connected with the support bottom plate, the trigger end is used to abut against the track wheel of the track transport vehicle, and the transmission end is connected with one end of the support rod. When the track transport vehicle drives from left to right, the support rod is driven to contract through the left trigger mechanism.

[0009] The fixed end of the right trigger mechanism is fixedly connected with the support bottom plate, and the rotating end is abutted with the other end of the support rod, the right trigger mechanism is provided with a torsion assembly, the rotating end is always rotated to the direction of the support rod by the torsion assembly, and the force generated by the torsion assembly is smaller than the force generated by the reset structure, so that the right trigger mechanism can trigger the contraction of the support rod, and the stability of the support rod is avoided from being affected.

[0010] Further, the device further comprises a starting structure, the starting structure comprises a fixed column and a starting spring, the lower end of the fixed column is fixed with the support bottom plate, and the lower end of the starting spring is fixed to the fixed column, and the upper end is left with a gap from the lower end surface of the support rod. When the support rod is contracted, the starting spring is compressed, and the starting spring can assist the reset structure to provide an initial reset power for the support rod, so as to speed up the reset speed.

[0011] Further, the rotary support structure comprises a rotary support seat and a rotary support block, the rotary support seat is fixed with the support bottom plate, and the rotary support block is rotatably connected with the rotary support seat and the support rod at two ends, respectively, the offset angle of the connecting central shaft is 5-30°, and the angle range can ensure the support stability and contraction flexibility of the support rod. The right part of the rotary support block is provided with a first limiting block, which cooperates with the rotary support seat to limit the deflection angle, and further improves the support stability.

[0012] Further, the reset structure comprises a fixed block and a reset tension spring, the reset tension spring is detachably installed between two adjacent fixed blocks, the force generated by the reset tension spring is greater than the sum of the friction force of the left trigger mechanism and the left pushing force of the right trigger mechanism, so that the support rod can be smoothly reset against the resistance.

[0013] Further, the left trigger mechanism comprises a left trigger rod base, a left trigger rod and a connecting rod, the top of the left trigger rod is in an arc structure, so as to reduce the wear of the track wheel; the right trigger mechanism comprises a right trigger rod base, a right trigger rod and a torsion spring, the top of the right trigger rod is in a circular structure, the second limiting block is arranged on the support bottom plate and used for limiting the rotation angle of the right trigger rod, and the jamming is avoided.

[0014] Further, the application further discloses a use method of the track passing device, which comprises five steps of installing the device, passing the track transport vehicle from left to right and triggering contraction, resetting the support rod, passing the track transport vehicle from right to left and triggering contraction, and resetting the support rod, so that the track transport vehicle and other vehicles can pass without obstacles.

[0015] The working principle of the application is as follows: the core working principle of the device is to realize the automatic switching of the support rod between the contraction state and the support state through the linkage of the mechanical structure. When the track transport vehicle passes, the pressure of the track wheel triggers the left trigger mechanism or the right trigger mechanism, so that the support rod overcomes the pulling force of the reset structure and rotates to the left and downward through the rotary support structure to the contraction state, so as to leave a passing space for the track wheel.

[0016] The right offset design of the connecting center axis of the rotary support structure is the key to realize stable support. The offset cooperates with the tension of the reset structure to form a stable mechanical balance of the support rod in the support state, so that even if it is rolled by other vehicles, it will not easily deflect or contract. At the same time, the first limiting block further limits the deflection angle of the rotary support block to ensure the stability of the support state.

[0017] The reset structure provides a continuous reset tension to the support rod, which drives the support rod to reset after the track transport vehicle passes. The starting spring of the starting structure accumulates energy when the support rod contracts, assists in resetting, speeds up the resetting speed, and avoids affecting the subsequent vehicle passing.

[0018] The twisting component of the right trigger mechanism ensures that the right trigger rod always adheres to the support rod, ensuring that the track transport vehicle can effectively trigger contraction when driving from right to left, and the force of the twisting component is less than that of the reset structure, avoiding 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 both reduce contact wear with the track wheels to prolong the service life of the device.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present application are:

[0020] 1. An orbital rail crossing device and method of use, through the design of an offset angle of 5-30° of the rotary support structure, cooperating with the tension of the reset spring, so that the support rod forms a stable mechanical balance in the support state, the maximum deflection amount is ≤0.4mm when the vehicle is rolled, and the reset time is ≤1.5s, completely solving the bumping problem caused by the track groove and ensuring the smooth passing of the vehicle.

[0021] 2. In the present application, the reset spring adopts a reasonable tension range of 500-2000N, which can overcome the friction and thrust of the device, and avoid stress failure, with a reset success rate of 100%, and can withstand 100,000 cycles of use, meeting the high-frequency passing demand of the workshop.

[0022] 3. In the present application, Q355 steel, 304 stainless steel, Q235 steel and other materials are provided for selection, which are suitable for different workshop scenes such as heavy load high frequency, humid corrosion, light load simple and other different workshop scenes, improving the versatility and applicability of the device.

[0023] 4. In the present application, under extreme working conditions such as 1.5 times rated load vehicle rolling and 100,000 cycles of operation, the core component has a small deformation amount and a performance decay rate ≤8%, and can still maintain stable support and switching function, with a service life of 5-10 years, significantly improving the reliability of the device.

[0024] 5. In the application, a pure mechanical structure is adopted, no external power is needed, the installation and maintenance cost is 60% lower than that of the existing electric reset device; the core component structure is simple, easy to disassemble and replace, and the workshop operation and maintenance cost is greatly reduced.

[0025] 6. In the application, through the cooperative design of the left trigger mechanism and the right trigger mechanism, the bidirectional traffic of the rail transport vehicle can be adapted, no additional adjustment is needed, the traffic demand of other vehicles vertically or crossing the track direction is met, the barrier-free cooperative operation of the two vehicles is realized, and the workshop transportation efficiency is improved.

[0026] 7. In the application, compared with the movable rail section and the electric reset scheme in the prior art, the combination design of offset rotary support + mechanical trigger reset is adopted, the technical effects of structure simplification, cost reduction and performance improvement are realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments, experimental examples and comparative examples will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. Other related drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings:

[0028] Figure 1 is a perspective structural schematic diagram of the track rail passing device of the application;

[0029] Figure 2 is a top view structural schematic diagram of the track rail passing device of the application;

[0030] Figure 3 is a sectional view structural schematic diagram of B-B in Figure 2

[0031] Figure 4 is a front view structural schematic diagram of the track rail passing device of the application;

[0032] Figure 5 is a sectional view structural schematic diagram of A-A in Figure 4

[0033] Figure 6 is a partial structural schematic diagram of the track rail passing device of the application;

[0034] Figure 7 is a three-dimensional structural diagram of the track rail passing device of the application (for intuitively showing the specific structure of the application).

[0035] ​​Mark No. : 1 - support bottom plate, 2 - support rod, 3 - track wheel, 4 - fixed column, 5 - starting spring, 6 - rotary support seat, 7 - rotary support block, 8 - first limit block, 9 - fixed block, 10 - reset tension spring, 11 - left trigger lever base, 12 - left trigger lever, 13 - connecting rod, 14 - right trigger lever base, 15 - right trigger lever, 16 - torsion spring, 17 - second limit block, 18 - open slot. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings, examples, experimental examples and comparative examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application, i.e., the described examples are only a part of the examples of the present application, but not all the examples. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative efforts are within the scope of protection of the present application.

[0038] It should be noted that the relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0039] The features and performances of the present application will be further described in detail below in combination with examples.

[0040] I. Examples

[0041] Example 1

[0042] The track rail device of the present application is like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5、 Figure 6 、 Figure 7 As shown in the drawings, it comprises 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 arranged above the support base plate 1;

[0043] The fixed end of the rotary support structure is fixedly connected with the support base plate 1, the rotating end of the rotary support structure is rotatably connected with the support rod 2, and the connection center axis of the rotating end of the rotary support structure with the support rod 2 is offset to the right relative to the connection center axis of the rotating end with the support base plate 1.

[0044] One end of the reset structure is fixedly connected with the upper end surface of the support base plate 1, and the other end of the reset structure is connected with the lower end surface of the support rod 2, and the reset structure is used for providing reset power for the support rod 2.

[0045] The fixed end of the left trigger mechanism is fixedly connected with the support base plate 1, the trigger end of the left trigger mechanism is used for abutting against the track wheel 3 of the track transport vehicle, and the transmission end of the left trigger mechanism is connected with one end of the support rod 2.

[0046] The fixed end of the right trigger mechanism is fixedly connected with the support base plate 1, the rotating end of the right trigger mechanism is abutted against the other end of the support rod 2, the right trigger mechanism is provided with a twisting assembly, the twisting assembly is used for always rotating the rotating end of the right trigger mechanism to the direction of the support rod 2, and the force generated by the twisting assembly is smaller than the force generated by the reset structure.

[0047] When the track wheel 3 of the track transport vehicle abuts against the left trigger mechanism or the right trigger mechanism, the support rod 2 moves to the left and downward to the retracted state through the rotary support structure; after the track wheel 3 of the track transport vehicle leaves, the support rod 2 resets to the supporting state under the action of the reset structure.

[0048] It also comprises a starting structure, the starting structure comprises a fixed column 4 and a starting spring 5; the lower end surface of the fixed column 4 is fixedly connected with the upper end surface of the support base plate 1, the lower end of the starting spring 5 is fixed to the fixed column 4, and a gap is arranged between the upper end surface of the starting spring 5 and the lower end surface of the support rod 2; when the support rod 2 is in the retracted state, the lower end surface of the support rod 2 is in contact with the upper end surface of the starting spring 5 and compresses the starting spring 5.

[0049] The rotary support structure comprises a rotary support seat 6 and a rotary support block 7; the rotary support seat 6 is fixedly connected with the support base plate 1, the lower end of the rotary support block 7 is rotatably connected with the rotary support seat 6, and the upper end of the rotary support block 7 is rotatably connected with the support rod 2; the connection center axis of the upper end of the rotary support block 7 with the support rod 2 is offset to the right by 5-30° relative to the connection center axis of the lower end of the rotary support block 7 with the rotary support seat 6.

[0050] The right part of the rotary support block 7 is provided with a first limiting block 8, the first limiting block 8 cooperates with the upper end surface of the rotary support seat 6, and is used for limiting the angle of right deflection of the rotary support block 7.

[0051] The reset structure comprises at least two fixed blocks 9 and a reset tension spring 10; one fixed block 9 is fixedly connected with the upper end surface of the support bottom plate 1, and the other fixed block 9 is connected with the lower end surface of the support rod 2; the reset tension spring 10 is detachably installed between the two fixed blocks 9, and the force generated by the reset tension spring 10 is greater than the sum of the frictional force of the left trigger mechanism and the leftward pushing force generated by the right trigger mechanism.

[0052] The left trigger mechanism comprises 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 with the support bottom plate 1, the left trigger rod 12 is rotationally connected with the left trigger rod base 11, the lower part of the left trigger rod 12 is rotationally connected with one end of the connecting rod 13, and the other end of the connecting rod 13 is rotationally connected with the lower part of one end of the support rod 2; the top part of the left trigger rod 12 is in an arc-shaped structure away from the side of the support rod 2.

[0053] The right trigger mechanism comprises 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 with the support bottom plate 1, the lower part of the right trigger rod 15 is rotationally connected with 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 part of the right trigger rod 15 is in a circular structure.

[0054] The upper end surface of the support bottom plate 1 is provided with a second limiting block 17, which is located below the right trigger rod 15 and is used for limiting the angle of downward rotation of the right trigger rod 15.

[0055] The support bottom plate 1 is provided with an open groove 18 for rotation of the left trigger mechanism, and the support rod 2 is provided with an open groove 18 for rotation of the transmission end of the left trigger mechanism; the support bottom plate 1 and the support rod 2 are respectively provided with open grooves 18 for rotation of the rotation support structure.

[0056] The specific implementation of the present application is: comprising a support bottom plate, a support rod, two groups of rotation support structures, two groups of reset structures, a left trigger mechanism and a right trigger mechanism; the support rod is a long strip-shaped metal plate covering the width of the track groove, ensuring the smooth passing of other vehicles.

[0057] The rotation support structure comprises a rotation support base and a rotation support block; the rotation support base is fixed to the support bottom plate by bolts, and the lower end of the rotation support block is rotationally connected with the rotation support base by a pin shaft, and the upper end is rotationally connected with the support rod by a pin shaft. The connecting pin shaft of the upper end of the rotation support block is offset to the right by 15° relative to the connecting pin shaft of the lower end, and the right part of the rotation support block is welded with a first limiting block; when the support rod is in a supporting state, the first limiting block is in contact with the upper end surface of the rotation support base, limiting the rotation support block from continuing to deflect to the right, and ensuring the supporting stability of the support rod.

[0058] The reset structure comprises two fixed blocks and a reset tension spring, one fixed block is welded to the support bottom plate, the other fixed block is welded to the support rod, the two ends of the reset tension spring are respectively hooked to the two fixed blocks, the pulling force of the reset tension spring is greater than the sum of the friction force of the left trigger mechanism and the left pushing force of the right trigger mechanism, so that the reset power is sufficient.

[0059] The left trigger mechanism comprises a left trigger rod base, a left trigger rod and a connecting rod, the left trigger rod base is fixed to the support bottom plate through bolts, the left trigger rod is rotationally connected with the left trigger rod base through a pin shaft, the lower part of the left trigger rod is rotationally connected with one end of the connecting rod through a pin shaft, and the other end of the connecting rod is rotationally connected with the lower part of the left end of the support rod through a pin shaft. The top of the left trigger rod is in an arc shape on the side away from the support rod, so as to reduce the abrasion when the track wheel is in contact.

[0060] The right trigger mechanism comprises a right trigger rod base, a right trigger rod and a torsion spring, the right trigger rod base is fixed to the support bottom plate through bolts, the lower part of the right trigger rod is rotationally connected with the right trigger rod base through a pin shaft, and the torsion spring is sleeved on the pin shaft and abuts against the right trigger rod base and the right trigger rod at the two ends, so that the right trigger rod is always rotated towards the support rod. The top of the right trigger rod is in a circular shape, and a second limiting block is welded on the support bottom plate and located below the right trigger rod, so as to limit the maximum angle of downward rotation of the right trigger rod and avoid the right trigger rod from being stuck with the support rod.

[0061] When the track wheel of the track transport vehicle drives from left to right, the track wheel presses on the arc-shaped top of the left trigger rod, the left trigger rod is rotated leftward and upward around the left trigger rod base, the left end of the support rod is pulled leftward and downward through the connecting rod, the support rod is tilted leftward and downward as a whole through the rotary support structure to the contracted state, and the track wheel passes through smoothly. After the track wheel passes through, the support rod is rotated rightward and upward around the rotary support structure under the pulling force of the reset tension spring, and is reset to the supporting state flush with the ground, so as to fill the groove.

[0062] When the track wheel of the track transport vehicle drives from right to left, the track wheel presses on the circular top of the right trigger rod, the right trigger rod is rotated downward against the action force of the torsion spring, and the right trigger rod pushes the right end of the support rod leftward and downward, so that the support rod is contracted as a whole, and the track wheel passes through, and the support rod is reset under the action of the reset tension spring.

[0063] Embodiment 2

[0064] The track passing device comprises a support bottom plate, a support rod, a reset tension spring, a left trigger mechanism and a right trigger mechanism. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7As shown, the specific implementation mode of the embodiment is that: the difference between the embodiment and embodiment 1 is that two groups of starting structures are additionally arranged. The starting structure comprises a fixed column and a starting spring, the fixed column is welded to the support bottom plate, the lower end of the starting spring is sleeved on the fixed column and is welded and fixed, and a gap of 5mm is left between the upper end of the starting spring and the lower end surface of the support rod.

[0065] When the support rod is contracted to the lowest position, the lower end surface of the support rod compresses the starting spring, and the starting spring accumulates elastic potential energy. When the track transport vehicle passes, the elastic force of the starting spring and the tension of the reset spring jointly act to quickly reset the support rod, shorten the reset time, and improve the passing efficiency.

[0066] Embodiment 3

[0067] The present application is a kind of track rail crossing device, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the specific implementation mode of the embodiment is that: the difference between the embodiment and embodiment 1 is that the connecting pin shaft of the upper end of the rotary support block is offset to the right by 5° relative to the connecting pin shaft of the lower end, the reset spring is made of high-strength alloy spring, and the tension is larger, which is suitable for other vehicles with larger load to pass through, and ensures that the support rod will not easily contract under the rolling of the vehicle, and ensures the stability of the support.

[0068] Embodiment 4

[0069] The present application is a kind of track rail crossing device, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the specific implementation mode of the embodiment is that: the difference between the embodiment and embodiment 1 is that the connecting pin shaft of the upper end of the rotary support block is offset to the right by 30° relative to the connecting pin shaft of the lower end, the connecting rod of the left trigger mechanism is an arc-shaped metal rod, which is adapted to the turning track of the support rod, reduces the wear of the connecting rod and the support rod, and prolongs the service life of the device.

[0070] Embodiment 5

[0071] The present application is a kind of track rail crossing device, as shown in

[0072] Step one, install two groups of rail crossing devices at the bottom of the groove of two tracks respectively, the two groups of rail crossing devices are correspondingly arranged, and the gap between the two groups of rail crossing devices is adapted to the wheelbase of the vehicle.

[0073] Step two, when the track wheel 3 of the track transport vehicle drives 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, the support rod 2 moves leftward and downward to the retracted state, the starting spring 5 is compressed, and the track transport vehicle passes through the track passing device;

[0074] Step three, after the track wheel 3 of the track transport vehicle passes through, the support rod 2 is quickly reset to the supporting state flush with the ground under the joint action of the reset tension spring 10 and the starting spring 5;

[0075] Step four, when the track wheel 3 of the track transport vehicle drives from right to left, the track wheel 3 abuts against the circular top of the right trigger rod 15, drives the right trigger rod 15 to move, the support rod 2 moves leftward and downward to the retracted state, the starting spring 5 is compressed, and the track transport vehicle passes through the track passing device;

[0076] Step five, after the track wheel 3 of the track transport vehicle passes through, the support rod 2 is reset to the supporting state under the joint action of the reset tension spring 10 and the starting spring 5, and other vehicles can pass through stably.

[0077] II. Experimental Example

[0078] Experimental Example 1: Test of correlation between offset angle of rotary support structure and support stability

[0079] Experimental purpose

[0080] Verify the support stability of the offset angle of the rotary support structure in the range of 5-30°, determine the optimal angle range, and provide data support for the parameter range.

[0081] Experimental conditions

[0082] Test sample: 6 groups of track passing devices are prepared, only the connection center axis offset angle of the rotary support block is different, which are 0°, 5°, 15°, 25°, 30°, and 35°, and the rest of the structure and material are completely consistent.

[0083] Test equipment: high-precision angle sensor, force sensor, displacement measuring instrument, and load vehicle (rated load 5t).

[0084] Test condition: install the 6 groups of samples in the track groove, and use the rated load vehicle to vertically crush the support rod at a speed of 5km / h, record the maximum deflection of the support rod, the reset time, and the support stability score (full score 10 points, no shaking 10 points, slight shaking 7-9 points, obvious shaking 4-6 points, and serious shaking 0-3 points).

[0085] Table 1 (experimental results of experimental example 1)

[0086]

[0087] Experimental conclusion

[0088] When the offset angle is in 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, meeting the requirements of smooth vehicle passage in the workshop; among them, 15° is the optimal angle, and the support stability is the best. When the offset angle is less than 5°, the support stability is poor, and the vehicle rolling is prone to shaking; when it is greater than 30°, the deflection increases and the reset efficiency decreases, so it is determined that 5-30° is a reasonable parameter range.

[0089] Experimental example 2: Test of reset spring tension value range

[0090] Experimental purpose

[0091] Determine the reasonable tension range of the reset spring to ensure that both the device friction and thrust can be overcome and fast and reliable reset can be achieved.

[0092] Experimental conditions

[0093] Test sample: 5 groups of rail crossing devices were prepared, with reset spring tension of 300N, 500N, 1000N, 2000N and 2500N, and the rest of the structure being consistent.

[0094] Test equipment: tension meter, timer, rail transport vehicle (self weight 3t).

[0095] Test conditions: the rail transport vehicle passed through the rail crossing device from the left and right sides respectively, and the success rate of reset after the contraction of the support rod, the reset time and the fatigue life of the spring (whether it failed after 100,000 cycles of contraction and reset) were recorded.

[0096] Table 2 (experimental results of experimental example 2)

[0097]

[0098] Experimental conclusion

[0099] When the reset spring tension is in the range of 500-2000N, the reset success rate is ≥98%, the average reset time is ≤1.5s, and it can withstand 10 million cycles of use, meeting the requirements of high frequency passage in the workshop. When the tension is less than 500N, it cannot completely overcome the device friction and thrust, and the reset success rate is low; when the tension is greater than 2000N, the spring stress is too large and is prone to breakage, so it is determined that 500-2000N is a reasonable tension range, and 1000N is the optimal tension value, taking into account the reset efficiency and service life.

[0100] Experimental example 3: Test of core component material performance

[0101] Experimental purpose

[0102] Compare the strength, wear resistance and service life of support plates and support rods made of different materials to determine the applicable scenarios.

[0103] Experimental conditions

[0104] Test samples: Three groups of rail passing devices were prepared, with core components made of Q235 ordinary carbon structural steel, Q355 low-alloy high-strength steel, and 304 stainless steel, respectively, and the rest of the structures being consistent.

[0105] Test equipment: universal material testing machine, wear testing machine, salt spray test chamber.

[0106] Test indicators: yield strength, wear resistance (after 100,000 times of rolling), corrosion resistance (after 72 hours of salt spray test), and service life estimation.

[0107] Table 3 (experimental results of experimental example 3)

[0108]

[0109] Experimental conclusion

[0110] Q355 steel has high yield strength, good wear resistance, and moderate cost, making it suitable for most heavy-duty and high-frequency traffic scenarios, making it the preferred material.

[0111] 304 stainless steel has excellent corrosion resistance and long service life, making it suitable for humid and corrosive gas workshop environments, but it is more expensive.

[0112] Q235 steel is low in cost but has poor strength and wear resistance, making it suitable for light-duty and low-frequency traffic in simple workshop scenarios.

[0113] Experimental example 4: extreme working condition stability test

[0114] Experimental purpose

[0115] To verify the stability of the rail passing device under extreme working conditions such as overloading and long-term wear, and to improve the reliability of the technical solution.

[0116] Experimental conditions

[0117] Test sample: rail passing device made of Q355 steel, 15° offset angle, and 1000N tension spring tension.

[0118] Test equipment: heavy-duty vehicle (7.5t, 1.5 times the rated load), cyclic wear testing machine, high-precision displacement meter.

[0119] Test condition 1: overloading vehicle continuously rolling the device at a speed of 3km / h for 500 times, recording the deformation of the support rod and whether the reset function is normal.

[0120] Test condition 2: simulate 100,000 times of track transport vehicle passing and vehicle rolling alternately with the cycle wear testing machine, record the wear amount of each part of the device and the change of support stability.

[0121] Table 4 (experimental results of experimental example 4)

[0122]

[0123] Experimental conclusion

[0124] Under the extreme working conditions of over-rolling and long-term wear, the core components of the track passing device have small deformation, normal reset function, low performance degradation rate, can maintain stable support and switching performance, and meet the long-term high-strength use requirements of the workshop.

[0125] III. Comparative example

[0126] Comparative example 1: track passing device without offset angle

[0127] The connection center axis of the rotary support structure is set to 0° offset angle, and the rest of the structure is consistent with the patent.

[0128] Test results: the maximum deflection of the support rod is 1.8 mm when the vehicle is rolling, and the reset time is 2.3 s, and after multiple uses, the support is unstable and stuck.

[0129] Comparative conclusion: the offset angle design (5-30°) of the patent is the key technical feature to achieve stable support, which is significantly better than the structure without offset angle.

[0130] Comparative example 2: existing electric reset track passing device (CN106629390A)

[0131] The reset structure of the existing technology adopts electric push rod + spring, which is compared with the pure mechanical reset structure of the patent.

[0132] Test results: the electric reset device needs external power supply, the installation and maintenance cost is high, and it cannot reset after power failure; the patent does not need external power, the installation and maintenance cost is 60% lower than that, and it can still work normally under the condition of power failure and fault.

[0133] Comparative conclusion: the pure mechanical reset structure of the patent is significantly better than the existing electric reset device in economy and reliability.

[0134] Comparative example 3: track passing device with insufficient reset tension spring tension

[0135] The reset tension spring tension is set to 300 N (lower than the 500 N lower limit of the patent), and the rest of the structure is consistent.

[0136] Test result: reset success rate is only 75%, in some cases, the support rod can not be fully reset, resulting in vehicle passing jolt; 100,000 cycles after the deformation of the spring failure.

[0137] Comparative conclusion: the 500-2000N tension range defined in the patent is the key to ensure the reset reliability and service life, and insufficient tension will seriously affect the performance of the device.

[0138] Comparative example 4: ordinary cast iron material over rail device

[0139] The support bottom plate and the support rod are made of ordinary cast iron material, and the rest of the structure is consistent with the patent.

[0140] Test result: after 200 times of rolling of overweight vehicles, cracks appear on the support rod; after 10,000 cycles of operation, the support bottom plate is severely worn and cannot be used normally.

[0141] Comparative conclusion: the Q355 steel and 304 stainless steel material preferred in the patent are significantly better than ordinary cast iron in strength and wear resistance, and can meet the long-term use requirements.

[0142] The above is only the preferred embodiment, experimental example, comparative example of the present application, and does not limit the protection scope of the present application, any modification, equivalent replacement and improvement made by those skilled in the art within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rail switching 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. A rail passing 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.

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