Method and system for optimizing the anti-slip performance of a sliding plate

Abstract

The present invention provides a method and system for optimizing the anti-skid performance of a sliding plate, which relates to the field of anti-skid detection technology. The method includes: setting an oblique groove on the upper contact surface of a test sliding plate; laying coarse sand in the oblique groove, fixing the lower contact surface of the test sliding plate to the ground, and placing a heavy object on the test sliding plate; applying traction and recording the critical traction; determining a friction coefficient function based on the critical traction, the particle size of the coarse sand, the angle of the oblique groove, and the weight of the heavy object; determining an optimized angle and an optimized particle size based on the friction coefficient function, the weight of the transported object, a first preset friction coefficient, and a second preset friction coefficient; and processing the sliding plate based on the optimized angle and the optimized particle size. According to the present invention, a friction coefficient function representing the relationship between the processing method and the anti-skid performance can be determined, and based on the friction coefficient function, an optimized processing method can be determined in combination with actual transportation needs to reduce the risk of the transported object slipping during transportation.

Description

Technical Field

[0001] The present invention relates to the field of anti-skid detection technology, and in particular to a method and system for optimizing the anti-skid performance of a sliding skateboard. Background Art

[0002] In related technology, CN116380779A discloses a method and device for testing the anti-slip performance of precast concrete slope protection, which relates to the technical field of anti-slip performance testing of precast concrete slope protection. The method and device include a base plate, a normal loading mechanism, rubber, and a shear loading mechanism. The precast block to be tested is placed on the base plate, and the rubber is placed on top of the precast block to be tested. The normal loading mechanism is used to provide normal loading to the rubber, and the shear loading mechanism is used to provide shear loading to the rubber. This scheme uses rubber material as the contact surface with an anti-slip pattern to conduct a shear performance test between concrete and rubber. Through the shear performance test, different normal stresses and anti-slip friction stresses of the contact surface under different rubber materials can be measured, and then the anti-slip performance of the precast concrete slope protection can be analyzed to achieve the purpose of saving materials, improving test efficiency, and reducing test costs. It can be widely used in testing the anti-slip performance of precast concrete slope protection.

[0003] CN111982802B discloses a portable anti-slip performance testing device and a method for testing soft floor materials. The method includes the following steps: testing is performed using the portable anti-slip performance testing device, which includes a test unit and a traction unit. The test unit includes a pressure block and a test panel, with the pressure block and test panel being detachably connected. The traction unit includes a frame, a traction rope, a power mechanism, and a detection mechanism. The traction rope has one end connected to the test panel and the other end connected to the power mechanism. The power mechanism is capable of driving the test panel to move relative to the frame along a set friction coefficient detection direction. This solution can meet the needs of both laboratory and field testing, and is suitable for both dry, clean, and wet surfaces, with a wide range of applications.

[0004] CN110987688A discloses a surface performance detection device for new material research and development that is easy to avoid slipping, comprising a detection box, a hydraulic rod fixed inside the detection box, a first drive motor fixedly installed inside the left side of the detection surface block, a knock detection mechanism connected to the middle of the first screw rod, a second drive motor fixed to the bottom front side of the hydraulic rod, a second screw rod fixed to the top of the connecting member, an adjustment panel connected to the outer bolt of the mounting member, a mounting panel fixed to the inner end of the adjustment panel, a fixing member fixed to the upper right of the adjustment plate surface, a tightening block provided on the left side of the anti-sliding block, and a sliding rod provided below the threaded rod. This surface performance detection device for new material research and development that is easy to avoid slipping is easy to avoid slipping, can effectively detect the hardness of the surface of new materials from multiple angles, is easy to detect empty packages inside new materials, and is easy to store without wasting space.

[0005] Therefore, in the relevant technology, the anti-slip performance of the material surface can be tested, but for a sliding plate that needs to carry objects for movement, it is impossible to detect the friction and anti-slip performance of the contact surface of the sliding plate, nor is it possible to determine the optimized processing method of the sliding plate based on actual movement and transportation needs.

[0006] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0007] The present invention provides a method and system for optimizing the anti-skid performance of a sliding slide, which can solve the technical problems that related technologies cannot detect the friction and anti-skid performance of the contact surface of the sliding slide, and cannot determine the optimized processing method of the sliding slide based on actual movement and transportation needs.

[0008] According to a first aspect of the present invention, a method for optimizing the anti-skid performance of a sliding plate is provided, comprising: providing a plurality of oblique grooves on the upper contact surfaces of a plurality of test sliding plates; laying coarse sand of various particle sizes in the oblique grooves of the plurality of test sliding plates, fixing the lower contact surface of the test sliding plates to the ground, and placing a heavy object on the test sliding plates; applying a continuously increasing traction force to the heavy object along the longitudinal direction of the test sliding plates by a traction device until the moment when the heavy object begins to slide relative to the upper contact surface of the test sliding plates, and recording the critical traction force applied by the traction device; and The friction coefficient function is determined based on the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding plate, and the weight of the heavy object; the optimized angle between the direction of the oblique groove on the sliding plate used to carry the transported object and the horizontal direction of the sliding plate, as well as the optimized particle size of the coarse sand laid in the oblique groove on the sliding plate are determined based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the sliding road surface, and the second preset friction coefficient of the unloading position; the sliding plate is processed based on the optimized angle and the optimized particle size.

[0009] According to the present invention, a friction coefficient function is determined based on the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object, including: setting the coefficients to be fitted of the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object to obtain the coefficient equation to be fitted of the friction coefficient function; solving the coefficients to be fitted in the coefficient equation to be fitted according to the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object corresponding to multiple test sliding slides to obtain the solved values of the coefficients to be fitted; obtaining the friction coefficient function according to the solved values of the coefficients to be fitted and the coefficient equation to be fitted.

[0010] According to the present invention, the coefficients to be fitted are set for the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding plate, and the weight of the heavy object, and the coefficient equation to be fitted for the friction coefficient function is obtained, including: according to the formula , obtain the coefficient equation to be fitted of the friction coefficient function, where, is the critical traction force corresponding to the i-th test sliding plate, is the angle between the direction of the oblique groove of the i-th test sliding plate and the horizontal direction of the test sliding plate, L is the horizontal length of the sliding plate, is the particle size of the coarse sand corresponding to the i-th test sliding plate, is the weight of the heavy object, 、 、 、 and are the coefficients to be fitted.

[0011] According to the present invention, based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slip road surface and the second preset friction coefficient of the unloading position, the optimized angle between the direction of the oblique groove on the slip slide for carrying the transported object and the lateral direction of the slip slide, as well as the optimized particle size of the coarse sand laid in the oblique groove on the slip slide are determined, including: determining the constraints of the parameter optimization model based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slip road surface, the second preset friction coefficient of the unloading position and the size data of the test slip slide; determining the objective function of the parameter optimization model based on the size data of the test slip slide; solving the parameter optimization model based on the constraints and the objective function to obtain the optimized angle and the optimized particle size.

[0012] According to the present invention, the constraint conditions of the parameter optimization model are determined based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slippery road surface, and the second preset friction coefficient of the unloading position, including: according to the formula , , , , determine the constraints of the parameter optimization model, where is the weight of the transported object, To optimize the unknown value of the angle, To optimize the particle size, is the weight of the sliding plate, is the first preset friction coefficient of the slippery road surface, is a preset coefficient greater than 1, is the second preset friction coefficient at the unloading position, is a preset coefficient less than 1, is the maximum value of the angles corresponding to multiple test sliding plates, is the minimum value of the angle corresponding to multiple test sliding plates, The particle size of the coarse sand corresponding to the first test sliding plate, The particle size of the coarse sand corresponding to the second test slide, is the particle size of the coarse sand corresponding to the nth test sliding plate, n is the number of test sliding plates, for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of , i≤n, and i and n are both positive integers.

[0013] According to the present invention, the objective function of the parameter optimization model is determined according to the friction coefficient function, including: according to the formula , determine the objective function of the parameter optimization model, where is the minimization function.

[0014] According to the present invention, the adjacent oblique grooves on the same test slip slide are spaced at equal distances in the longitudinal direction of the test slip slide, the directions of the oblique grooves on the same test slip slide have the same angle with the transverse direction of the test slip slide, and the directions of the oblique grooves on different test slip slides have different angles with the transverse direction of the test slip slide.

[0015] According to the present invention, the area of the lower surface of the weight is greater than or equal to the area of the upper contact surface of the test sliding plate, and the lower surface of the weight completely covers the upper contact surface of the test sliding plate.

[0016] According to the present invention, the front end of the sliding direction of the sliding slide is set to a slope shape, so that the area of the upper contact surface of the sliding slide is larger than the area of the lower contact surface, and the transported object is fixed to the sliding slide through a connecting piece. When the lower surface area of the transported object is smaller than the area of the upper contact surface of the sliding slide, a limiting structure is set around the upper contact surface of the sliding slide.

[0017] According to a second aspect of the present invention, a system for optimizing the anti-slip performance of a sliding plate is provided, comprising: a groove module for setting a plurality of oblique grooves on the upper contact surfaces of a plurality of test sliding plates; a coarse sand module for laying coarse sand of various particle sizes in the oblique grooves of the plurality of test sliding plates, fixing the lower contact surface of the test sliding plate to the ground, and placing a heavy object on the test sliding plate; a critical traction force module for applying a continuously increasing traction force to the heavy object along the longitudinal direction of the test sliding plate by a traction device until the heavy object begins to slide relative to the upper contact surface of the test sliding plate, and recording the critical traction force applied by the traction device; a friction A coefficient function module is used to determine the friction coefficient function based on the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding slide, and the weight of the heavy object; an optimization module is used to determine the optimized angle between the direction of the oblique groove on the sliding slide used to carry the transported object and the lateral direction of the sliding slide, as well as the optimized particle size of the coarse sand laid in the oblique groove on the sliding slide based on the friction coefficient function, the weight of the transported object, and the first preset friction coefficient of the sliding road surface and the second preset friction coefficient of the unloading position; a processing module is used to process the sliding slide according to the optimized angle and the optimized particle size.

[0018] Technical effect: According to the present invention, the anti-skid performance of the test sliding plate obtained by various processing methods can be detected by using heavy objects and traction equipment, so as to determine the friction coefficient function that can represent the relationship between the processing method and the anti-skid performance. Then, based on the friction coefficient function, the optimized processing method can be determined in combination with the actual transportation needs, so that the processing method can meet the actual transportation needs, reduce the risk of the transported objects slipping during transportation, and improve transportation efficiency. When determining the friction coefficient function, the effect of the transverse angle between the oblique groove and the test sliding plate on the roughness of the upper contact surface of the test sliding plate can be comprehensively considered. Combined with the total length of the oblique groove and the hindering effect on relative motion, the effect of the angle on the roughness can be fully expressed, and the changing relationship between the coarse sand particle size and the friction coefficient can be accurately expressed. Therefore, the effect of the setting method of the test sliding plate on the friction force can be accurately and objectively expressed, thereby improving the accuracy of the friction coefficient function. When determining the constraint conditions, the friction coefficient of the upper contact surface of the sliding plate can be determined by the friction coefficient function, thereby determining the critical friction force of the relative motion between the sliding plate and the transported object, and the critical friction force of the relative motion between the sliding plate and the sliding road surface and the unloading position can be determined, thereby determining the value range of the critical friction force of the relative motion between the sliding plate and the transported object. When moving the transported object, the transported object and the sliding plate can be prevented from moving relative to each other, and the sliding plate and the sliding road surface can be prevented from moving relative to each other. When unloading the transported object, the transported object and the sliding plate can be prevented from moving relative to each other, and the sliding plate and the road surface at the unloading position can be prevented from moving relative to each other. In addition, in order to ensure that the transportation process can still be completed even if there is a certain error in the calculation of the friction coefficient, a preset coefficient is also set, so that the transportation process can be completed smoothly. When determining the objective function, when determining the optimal angle, while ensuring that the transportation process can be completed smoothly, the length of the oblique groove can be minimized to improve the processing yield, reduce the processing difficulty and processing cost, and reduce the loss during the transportation process.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and not limiting of the present invention. Other features and aspects of the present invention will become more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can derive other embodiments based on these drawings without inventive efforts.

[0021] Figure 1A flow chart of a method for optimizing the anti-skid performance of a sliding plate according to an embodiment of the present invention is exemplarily shown;

[0022] Figure 2 A schematic diagram exemplarily shows an oblique groove of a test sliding plate according to an embodiment of the present invention;

[0023] Figure 3 The following is a block diagram of a system for optimizing the anti-skid performance of a sliding plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0026] Figure 1 A flowchart of a method for optimizing the anti-slip performance of a sliding plate according to an embodiment of the present invention is exemplified, the method comprising: step S101, providing a plurality of oblique grooves on the upper contact surfaces of a plurality of test sliding plates; step S102, laying coarse sand of various particle sizes in the oblique grooves of the plurality of test sliding plates, fixing the lower contact surface of the test sliding plates to the ground, and placing a heavy object on the test sliding plates; step S103, applying a continuously increasing traction force to the heavy object along the longitudinal direction of the test sliding plates by a traction device until the moment when the heavy object begins to slide relative to the upper contact surface of the test sliding plates, and recording the critical traction force applied by the traction device force; step S104, determining the friction coefficient function according to the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding plate, and the weight of the heavy object; step S105, determining the optimized angle between the direction of the oblique groove on the sliding plate for carrying the transported object and the lateral direction of the sliding plate, and the optimized particle size of the coarse sand laid in the oblique groove on the sliding plate according to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the sliding road surface and the second preset friction coefficient of the unloading position; step S106, processing the sliding plate according to the optimized angle and the optimized particle size.

[0027] According to the method for optimizing the anti-slip performance of a sliding plate in an embodiment of the present invention, the anti-slip performance of a test sliding plate obtained by various processing methods can be detected by using heavy objects and traction equipment, thereby determining a friction coefficient function that can represent the relationship between the processing method and the anti-slip performance. Based on the friction coefficient function, the optimized processing method can be determined in combination with actual transportation needs, so that the processing method can meet actual transportation needs, reduce the risk of slipping of the transported objects during transportation, and improve transportation efficiency.

[0028] According to one embodiment of the present invention, in step S101, the upper contact surface of the sliding plate contacts the transported object to be transported, and the lower contact surface contacts the ground. In order to reduce the possibility of the transported object slipping, grooves can be provided on the sliding plate, and coarse sand can be laid in the grooves to increase friction. The arrangement of the grooves and coarse sand can be determined by testing. Oblique grooves can be provided on the upper contact surfaces of multiple test sliding plates, and adjacent oblique grooves on the same test sliding plate are spaced at equal distances in the longitudinal direction of the test sliding plate. The direction of the oblique grooves on the same test sliding plate is the same as the horizontal angle of the test sliding plate, and the direction of the oblique grooves on different test sliding plates is different from the horizontal angle of the test sliding plate.

[0029] According to one embodiment of the present invention, in step S102, coarse sand of various particle sizes can be laid in the oblique grooves. The coarse sand particle size in multiple oblique grooves on the same test slide is the same. The coarse sand of various particle sizes can be screened using a gravel particle size screening device and laid. During the test, only the friction performance of the upper contact surface of the test slide (i.e., the surface in contact with the transported object) is tested. Therefore, the lower contact surface can be fixed to the ground, and only the friction performance of the upper contact surface can be tested. The weight of the weight used in the test can be equal to the average weight of the transported object. To fully test the friction performance of the upper contact surface of the test slide, the area of the lower surface of the weight is greater than or equal to the area of the upper contact surface of the test slide, and the lower surface of the weight completely covers the upper contact surface of the test slide. In other words, the lower surface of the weight is in full contact with the upper contact surface of the test slide, thereby testing the overall friction performance of the upper contact surface of the test slide.

[0030] According to one embodiment of the present invention, in step S103, the traction device is connected to the weight and applies a continuously increasing traction force until the weight begins to slide relative to the upper contact surface of the test slip slide. The critical traction force applied by the traction device is recorded. The critical traction force is equal to the critical value for converting static friction into kinetic friction. When the traction force is greater than or equal to the critical value, the weight will slide relative to the upper contact surface of the test slip slide. When the traction force is less than or equal to the critical value, the weight will remain stationary relative to the upper contact surface of the test slip slide.

[0031] According to one embodiment of the present invention, in step S104, the relationship between the friction performance of the upper contact surface of the test slide and the configuration of the test slide can be determined by measuring the critical traction force when a heavy object placed on multiple test slides is pulled, as well as the configuration of the oblique grooves and coarse sand particle size of the multiple test slides. During the test, the same test slide has only one configuration of oblique grooves, but the same test slide can be used for multiple tests, each with a different particle size of gravel laid in the oblique grooves. This allows multiple tests to be performed using a limited number of test slides, thereby obtaining more test data.

[0032] According to one embodiment of the present invention, a friction coefficient function is determined based on the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test slip slide, and the weight of the heavy object, including: setting the coefficients to be fitted of the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test slip slide, and the weight of the heavy object to obtain the coefficient equation to be fitted of the friction coefficient function; solving the coefficients to be fitted in the coefficient equation to be fitted according to the critical traction, the particle size of coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test slip slide, and the weight of the heavy object corresponding to multiple test slip slides to obtain the solved values of the coefficients to be fitted; obtaining the friction coefficient function according to the solved values of the coefficients to be fitted and the coefficient equation to be fitted.

[0033] According to one embodiment of the present invention, the coefficients to be fitted are set for the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding plate, and the weight of the weight, and the coefficient equation to be fitted of the friction coefficient function is obtained, including: obtaining the coefficient equation to be fitted of the friction coefficient function according to formula (1),

[0034] (1),

[0035] in, is the critical traction force corresponding to the i-th test sliding plate, is the angle between the direction of the oblique groove of the i-th test sliding plate and the horizontal direction of the test sliding plate, L is the horizontal length of the sliding plate, is the particle size of the coarse sand corresponding to the i-th test sliding plate, is the weight of the heavy object, 、 、 、 and are the coefficients to be fitted.

[0036] According to one embodiment of the present invention, the purpose of laying coarse sand in the oblique groove is to increase the roughness of the upper contact surface of the test sliding plate, thereby increasing the friction. The longer the groove length is, the larger the contact area between the coarse sand and the weight in the oblique groove is, and the greater the increase in friction. However, the length of the oblique groove is related to the angle between the direction of the oblique groove and the horizontal direction of the test sliding plate. The larger the angle, the longer the length of the oblique groove. However, the larger the angle, the smaller the obstacle formed by the edge of the groove to the relative movement of the weight and the test sliding plate, and the roughness and friction of the upper contact surface of the test sliding plate will be reduced. Therefore, the effect of the angle on the friction is not single, and it is necessary to conduct a comprehensive analysis based on the above two aspects.

[0037] Figure 2 The schematic diagram of the oblique groove of the test sliding plate according to the embodiment of the present invention is exemplarily shown. Figure 2 Taking the longest oblique groove in the example (the longest oblique groove represented by the solid line), the length of the oblique groove is , the length of the shorter oblique groove above the longest oblique groove is less than , but the sum of the extension line of the oblique groove (i.e., the oblique groove represented by the dotted line) and the length of the oblique groove is still , and the extension line of the oblique groove is equal to the length of the lowest oblique groove (the oblique groove represented by the lowest solid line). Therefore, it can be considered that the uppermost oblique groove and the lowermost oblique groove can be combined into a complete oblique groove, the total length of which is Based on this, the starting points of k oblique grooves can be set on the left longitudinal edge of the test sliding plate, and the length of the test sliding plate is The total number of oblique grooves is k (including the combined oblique grooves), so the total length of the oblique grooves on the test slide is , so the angle The larger the angle, the longer the total length of the oblique groove, the larger the contact area between the coarse sand and the weight in the oblique groove, and the greater the increase in the friction coefficient. On the other hand, the larger the angle, the smaller the obstacle formed by the edge of the groove on the relative motion of the weight and the test slide. When the angle is 0°, the obstacle is the largest, and when the angle is 90°, the obstacle is the smallest. Combined with this property, it can be used To describe the effect coefficient of this obstruction, when the angle is 0°, the effect coefficient of this obstruction is 1, and when the angle is 90°, the effect coefficient of this obstruction is ,in, is a coefficient to be fitted that is less than 1 and greater than 0. Therefore, when the hindering effect is the smallest, the effect coefficient is still greater than 0. Therefore, the friction coefficient of the upper contact surface of the test sliding plate is related to the above two items, that is, the length of the oblique groove and the action coefficient of the obstruction effect of the oblique groove Therefore, the coefficient to be fitted is set as the product of the two .

[0038] According to one embodiment of the present invention, the particle size of the coarse sand also affects the roughness of the upper contact surface of the test sliding plate. In addition, when the particle size is small, the coarse sand may roll, which reduces the friction force. When the particle size is large, there may be a risk of gravel breaking, thereby reducing the friction force. Therefore, medium-sized gravel is most likely to increase the friction coefficient of the upper contact surface of the test sliding plate. Based on the above analysis, the friction coefficient does not increase continuously with the increase of the particle size of the coarse sand, but after increasing to a certain extent, there is a risk of decreasing. Therefore, a quadratic function term is set for the particle size. , which describes the relationship between the friction coefficient and the particle size of coarse sand.

[0039] According to one embodiment of the present invention, the above items regarding the arrangement of the oblique grooves Items with set grit size By summing the values, we can obtain the friction coefficient of the contact surface on the test slide. This friction coefficient, multiplied by the weight of the weight, equals the critical traction force. This gives us the coefficient equation to be fitted.

[0040] According to one embodiment of the present invention, as described above, multiple test slides can be processed and coarse sand of multiple particle sizes can be obtained. Therefore, multiple sets of test data can be obtained, that is, multiple sets of test data of critical traction, particle size and angle. These data are substituted into the equation of coefficient to be fitted and solved to obtain the coefficient to be fitted. 、 、 、 and The solution value of . After solving, The solution value is 0.347, The solution value is 0.243, The solution value is -0.062, The solution value is 0.395, The solution is 0.083. After obtaining the solution, we can substitute it into the equation to be fitted to obtain the friction coefficient function.

[0041] In this way, the influence of the lateral angle between the oblique groove and the test sliding plate on the roughness of the upper contact surface of the test sliding plate can be comprehensively considered. Combined with the total length of the oblique groove and the hindering effect on relative motion, the influence of the angle on the roughness can be fully expressed, and the changing relationship between the coarse sand particle size and the friction coefficient can be accurately expressed. Therefore, the influence of the setting method of the test sliding plate on the friction force can be accurately and objectively expressed, thereby improving the accuracy of the friction coefficient function.

[0042] According to one embodiment of the present invention, in step S105, when the transported objects are actually carried by the sliding slide, the optimized setting method of the oblique grooves of the sliding slide and the particle size of the laid coarse sand can be determined based on the friction coefficient function determined above and the limitations of the actual transportation conditions.

[0043] According to one embodiment of the present invention, based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slip road surface and the second preset friction coefficient of the unloading position, the optimized angle between the direction of the oblique groove on the slip slide for carrying the transported object and the lateral direction of the slip slide, as well as the optimized particle size of the coarse sand laid in the oblique groove on the slip slide are determined, including: determining the constraints of the parameter optimization model based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slip road surface, the second preset friction coefficient of the unloading position and the size data of the test slip slide; determining the objective function of the parameter optimization model based on the size data of the test slip slide; solving the parameter optimization model based on the constraints and the objective function to obtain the optimized angle and the optimized particle size.

[0044] According to one embodiment of the present invention, the parameter optimization model can be an optimization model such as a genetic algorithm model and a nonlinear programming model. The constraints and objective functions of the optimization model can be set, and the constraints and objective functions can be related to the direction of the oblique groove on the sliding plate and the lateral angle of the sliding plate and the particle size of the coarse sand. After the setting is completed, the solution can be performed to determine the optimal solution that can achieve the goal described by the objective function to the greatest extent under the constraints of the constraints. The angle and particle size corresponding to the optimal solution are the optimized angle and optimized particle size.

[0045] According to one embodiment of the present invention, the constraint conditions of the parameter optimization model are determined based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slippery road surface, and the second preset friction coefficient of the unloading position, including: determining the constraint conditions of the parameter optimization model according to formula (2), formula (3), formula (4), and formula (5),

[0046] (2),

[0047] (3),

[0048] (4),

[0049] (5),

[0050] in, is the weight of the transported object, To optimize the unknown value of the angle, To optimize the particle size, is the weight of the sliding plate, is the first preset friction coefficient of the slippery road surface, is a preset coefficient greater than 1, is the second preset friction coefficient at the unloading position, is a preset coefficient less than 1, is the maximum value of the angles corresponding to multiple test sliding plates, is the minimum value of the angle corresponding to multiple test sliding plates, The particle size of the coarse sand corresponding to the first test sliding plate, The particle size of the coarse sand corresponding to the second test slide, is the particle size of the coarse sand corresponding to the nth test sliding plate, n is the number of test sliding plates, for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of , i≤n, and i and n are both positive integers.

[0051] According to one embodiment of the present invention, both the first preset friction coefficient and the second preset friction coefficient can be measured. For example, a heavy object can be placed on a slippery road surface, and the heavy object can be pulled forward at a constant speed by a traction device, and the ratio of the traction force to the weight of the heavy object can be used as the first preset friction coefficient. Similarly, a heavy object can be placed at an unloading position, and the heavy object can be pulled forward at a constant speed by a traction device, and the ratio of the traction force to the weight of the heavy object can be used as the second preset friction coefficient. During sliding on a slippery road surface, it is necessary to prevent relative displacement between the transported object and the slippery slide, while relative displacement between the slippery road surface and the slippery slide can occur, so that the transported object can be transported by the slippery slide. At the unloading position, it is necessary to prevent relative displacement between the transported object and the slippery slide, but to prevent relative displacement between the slippery road surface and the slippery slide, so that the transported object can leave the slippery slide. Therefore, the second preset friction coefficient is greater than the first preset friction coefficient. For example, the unloading position can be paved with a rough road surface, while the slippery road surface can be paved with a relatively smooth road surface.

[0052] According to one embodiment of the present invention, is the friction coefficient of the upper contact surface of the sliding plate when the included angle of the oblique groove is a specific angle (i.e., the undetermined value of the optimized included angle) and the particle size of the coarse sand is a specific particle size (i.e., the undetermined value of the optimized particle size). The critical friction force for the relative motion between the transported object and the upper contact surface of the sliding plate is greater than the critical friction force, and the transported object and the upper contact surface of the sliding plate will move relative to each other. Otherwise, the transported object and the upper contact surface of the sliding plate will be relatively stationary. In formula (2), is the total weight of the transported object and the sliding plate, is the critical friction force when the sliding plate and the sliding road surface move relative to each other. Greater than In the case of applying traction to the transported object, the transported object and the sliding plate can be prevented from moving relative to each other, and the sliding plate and the sliding road surface can be made to move relative to each other, so that the sliding plate can carry the moving object to move. In addition, in order to leave a certain margin so that the above movement can still be achieved when a certain error occurs in the calculation of the friction coefficient, , is a preset coefficient greater than 1, for example, .

[0053] According to one embodiment of the present invention, in formula (3), after reaching the unloading position, is the critical friction force of relative motion between the sliding plate and the road surface at the unloading position. In the case of traction, when the transported object is subjected to traction, relative motion can occur between the transported object and the sliding plate, and relative motion between the sliding plate and the road surface at the unloading position cannot occur, so that the transported object can leave the sliding plate. In addition, in order to leave a certain margin so that the above motion can still be achieved when a certain error occurs in the calculation of the friction coefficient, , is a preset coefficient less than 1, for example, .

[0054] According to one embodiment of the present invention, in formulas (4) and (5), the value range of the angle of the oblique groove on the sliding plate and the value range of the particle size of the coarse sand are respectively limited, and the particle size of the coarse sand is a set of discrete numbers, and the particle sizes in the set are the particle sizes of various coarse sands during the test.

[0055] In this way, the friction coefficient of the upper contact surface of the sliding plate can be determined by the friction coefficient function, and then the critical friction force of the relative movement between the sliding plate and the transported object can be determined, and the critical friction force of the relative movement between the sliding plate and the sliding road surface and the unloading position can be determined, and then the value range of the critical friction force of the relative movement between the sliding plate and the transported object can be determined. When moving the transported object, relative movement between the transported object and the sliding plate can be prevented, and relative movement between the sliding plate and the sliding road surface can be prevented. When unloading the transported object, relative movement between the transported object and the sliding plate can be prevented, and relative movement between the sliding plate and the road surface at the unloading position can be prevented. In addition, in order to complete the transportation process even when a certain error occurs in the calculation of the friction coefficient, a preset coefficient is also set, so that the transportation process can be completed smoothly.

[0056] According to one embodiment of the present invention, determining the objective function of the parameter optimization model according to the friction coefficient function includes: determining the objective function of the parameter optimization model according to formula (6),

[0057] (6)

[0058] in, is the minimization function.

[0059] According to one embodiment of the present invention, When the angle of the oblique groove of the sliding plate is a specific angle (that is, the undetermined value of the optimized angle), the length of the oblique groove is determined. The larger the specific angle, the longer the length of the oblique groove, the greater the processing difficulty, the higher the processing cost, and the lower the yield (there is a risk of breaking the sliding plate). Therefore, when selecting the optimized angle, the length of the oblique groove is minimized, thereby reducing the processing difficulty and improving the processing yield.

[0060] In the example, the sliding plate is used to move the steel truss of the bridge. The transported object is the steel truss, which weighs 1492 tons. The sliding plate weighs about 1 ton. The sliding process is that the slide contacts the steel plate on the bridge body. When the lubricant is used, the first preset friction coefficient is About 0.2, after reaching the unloading position, the lower surface of the sliding plate can be in contact with the concrete road surface, and the second preset friction coefficient is approximately 0.5, and the solution is The optimal solution is 35.8°. The optimal solution is 1.8mm. Considering the processing accuracy, Between 35°-36°, Between 1.5mm-2.0mm.

[0061] In this way, when determining the optimal angle, the length of the oblique groove can be minimized while ensuring the smooth completion of the transportation process, thereby improving the processing yield, reducing the processing difficulty and cost, and reducing losses during transportation.

[0062] According to one embodiment of the present invention, after determining the objective function and constraints, the optimal solution that maximizes the realization of the goal described by the objective function can be solved under the constraints of the constraints. The angle and particle size corresponding to the optimal solution are the optimized angle and optimized particle size.

[0063] According to one embodiment of the present invention, in step S106, the sliding plate can be processed according to the optimized angle and optimized particle size, so that the angle between the direction of the oblique groove of the sliding plate and the horizontal direction of the sliding plate is the optimized angle, and coarse sand with optimized particle size is laid in the oblique groove to smoothly complete the transportation process.

[0064] According to one embodiment of the present invention, in order to further reduce the difficulty of the transportation process, the front end of the sliding direction of the sliding slide can be set to a slope shape, so that the area of the upper contact surface of the sliding slide is larger than the area of the lower contact surface, and the transported object is fixed to the sliding slide through a connecting piece. When the lower surface area of the transported object is smaller than the area of the upper contact surface of the sliding slide, a limiting structure is set around the upper contact surface of the sliding slide.

[0065] According to one embodiment of the present invention, when the front end of the sliding plate is configured as a slope in the sliding direction, it is easier to pass through certain obstacles. During transportation, the transported object can be fixed to the sliding plate using connectors (e.g., bolts, etc.), and a limiting structure (e.g., a limiting block or baffle) is provided around the upper contact surface of the sliding plate to prevent the transported object from falling. When the transported object reaches the unloading position, the connector and limiting structure can be removed, allowing the transported object to smoothly leave the sliding plate.

[0066] According to the method for optimizing the anti-skid performance of a sliding plate of an embodiment of the present invention, the anti-skid performance of a test sliding plate obtained by a variety of processing methods can be detected by using a weight and a traction device, thereby determining a friction coefficient function that can represent the relationship between the processing method and the anti-skid performance. Then, based on the friction coefficient function, the optimized processing method can be determined in combination with the actual transportation needs, so that the processing method can meet the actual transportation needs, reduce the risk of the transported objects slipping during transportation, and improve transportation efficiency. When determining the friction coefficient function, the effect of the transverse angle between the oblique groove and the test sliding plate on the roughness of the upper contact surface of the test sliding plate can be comprehensively considered. Combined with the total length of the oblique groove and the hindering effect on relative motion, the effect of the angle on the roughness can be fully expressed, and the changing relationship between the coarse sand particle size and the friction coefficient can be accurately expressed. Therefore, the effect of the setting method of the test sliding plate on the friction force can be accurately and objectively expressed, thereby improving the accuracy of the friction coefficient function. When determining the constraint conditions, the friction coefficient of the upper contact surface of the sliding plate can be determined by the friction coefficient function, thereby determining the critical friction force of the relative motion between the sliding plate and the transported object, and the critical friction force of the relative motion between the sliding plate and the sliding road surface and the unloading position can be determined, thereby determining the value range of the critical friction force of the relative motion between the sliding plate and the transported object. When moving the transported object, the transported object and the sliding plate can be prevented from moving relative to each other, and the sliding plate and the sliding road surface can be prevented from moving relative to each other. When unloading the transported object, the transported object and the sliding plate can be prevented from moving relative to each other, and the sliding plate and the road surface at the unloading position can be prevented from moving relative to each other. In addition, in order to ensure that the transportation process can still be completed even if there is a certain error in the calculation of the friction coefficient, a preset coefficient is also set, so that the transportation process can be completed smoothly. When determining the objective function, when determining the optimal angle, while ensuring that the transportation process can be completed smoothly, the length of the oblique groove can be minimized to improve the processing yield, reduce the processing difficulty and processing cost, and reduce the loss during the transportation process.

[0067] Figure 3A block diagram of a system for optimizing the anti-slip performance of a sliding plate according to an embodiment of the present invention is exemplarily shown, wherein the system includes: a groove module for setting a plurality of oblique grooves on the upper contact surfaces of a plurality of test sliding plates; a coarse sand module for laying coarse sand of various particle sizes in the oblique grooves of the plurality of test sliding plates, fixing the lower contact surface of the test sliding plates to the ground, and placing a heavy object on the test sliding plates; a critical traction force module for applying a continuously increasing traction force to the heavy object along the longitudinal direction of the test sliding plate through a traction device until the heavy object begins to slide relative to the upper contact surface of the test sliding plate, and recording the critical traction force applied by the traction device. a friction coefficient function module for determining the friction coefficient function based on the critical traction, the particle size of the coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding slide, and the weight of the heavy object; an optimization module for determining the optimized angle between the direction of the oblique groove on the sliding slide for carrying the transported object and the lateral direction of the sliding slide, and the optimized particle size of the coarse sand laid in the oblique groove on the sliding slide based on the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the sliding road surface, and the second preset friction coefficient of the unloading position; and a processing module for processing the sliding slide according to the optimized angle and the optimized particle size.

[0068] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A method for optimizing the anti-skid performance of a sliding plate, characterized in that: include: A plurality of oblique grooves are provided on the upper contact surfaces of a plurality of test sliding slides; coarse sand of various particle sizes is laid in the oblique grooves of the plurality of test sliding slides, the lower contact surface of the test sliding slide is fixed to the ground, and a heavy object is placed on the test sliding slide; a continuously increasing traction force is applied to the heavy object along the longitudinal direction of the test sliding slide by a traction device until the moment when the heavy object begins to slide relative to the upper contact surface of the test sliding slide, and the critical traction force applied by the traction device is recorded; a friction coefficient function is determined according to the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique grooves and the transverse direction of the test sliding slide, and the weight of the heavy object; an optimized angle between the direction of the oblique grooves on the sliding slide for carrying the transported object and the transverse direction of the sliding slide, as well as an optimized particle size of the coarse sand laid in the oblique grooves on the sliding slide are determined according to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the sliding road surface, and the second preset friction coefficient of the unloading position; The sliding plate is processed according to the optimized angle and the optimized particle size.

2. The method for optimizing the anti-slip performance of a sliding plate according to claim 1, characterized in that: According to the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object, the friction coefficient function is determined, including: setting the coefficients to be fitted of the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object, and obtaining the coefficient equation to be fitted of the friction coefficient function; according to the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding slide, and the weight of the heavy object corresponding to multiple test sliding slides, the coefficients to be fitted in the coefficient equation to be fitted are solved to obtain the solved values of the coefficients to be fitted; according to the solved values of the coefficients to be fitted and the coefficient equation to be fitted, the friction coefficient function is obtained.

3. The method for optimizing the anti-slip performance of a sliding plate according to claim 2, characterized in that: Set the critical traction force, the particle size of the coarse sand, the angle between the direction of the oblique groove and the horizontal direction of the test sliding plate, and the weight of the weight to be fitted, and obtain the coefficient equation of the friction coefficient function to be fitted, including: according to the formula , obtain the coefficient equation to be fitted of the friction coefficient function, where, is the critical traction force corresponding to the i-th test sliding plate, is the angle between the direction of the oblique groove of the i-th test sliding plate and the horizontal direction of the test sliding plate, L is the horizontal length of the sliding plate, is the particle size of the coarse sand corresponding to the i-th test sliding plate, is the weight of the heavy object, 、 、 、 and are the coefficients to be fitted.

4. The method for optimizing the anti-slip performance of a sliding plate according to claim 3, characterized in that: According to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slipping pavement and the second preset friction coefficient of the unloading position, the optimized angle between the direction of the oblique groove on the slipping slide for carrying the transported object and the lateral direction of the slipping slide, as well as the optimized particle size of the coarse sand laid in the oblique groove on the slipping slide, are determined, including: determining the constraints of the parameter optimization model according to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slipping pavement, the second preset friction coefficient of the unloading position and the size data of the test slipping slide; determining the objective function of the parameter optimization model according to the size data of the test slipping slide; solving the parameter optimization model according to the constraints and the objective function to obtain the optimized angle and the optimized particle size.

5. The method for optimizing the anti-slip performance of a sliding plate according to claim 4, characterized in that: According to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the slippery road surface and the second preset friction coefficient of the unloading position, the constraint conditions of the parameter optimization model are determined, including: according to the formula , , , , determine the constraints of the parameter optimization model, where is the weight of the transported object, To optimize the unknown value of the angle, To optimize the particle size, is the weight of the sliding plate, is the first preset friction coefficient of the slippery road surface, is a preset coefficient greater than 1, is the second preset friction coefficient at the unloading position, is a preset coefficient less than 1, is the maximum value of the angles corresponding to multiple test sliding plates, is the minimum value of the angle corresponding to multiple test sliding plates, The particle size of the coarse sand corresponding to the first test sliding plate, The particle size of the coarse sand corresponding to the second test slide, is the particle size of the coarse sand corresponding to the nth test sliding plate, n is the number of test sliding plates, for The solution value of for The solution value of for The solution value of for The solution value of for The solution value of , i≤n, and i and n are both positive integers.

6. The method for optimizing the anti-slip performance of a sliding plate according to claim 5, characterized in that: According to the friction coefficient function, the objective function of the parameter optimization model is determined, including: according to the formula , determine the objective function of the parameter optimization model, where is the minimization function.

7. The method for optimizing the anti-slip performance of a sliding plate according to claim 1, characterized in that: The adjacent oblique grooves on the same test sliding plate are spaced at equal distances in the longitudinal direction of the test sliding plate, the directions of the oblique grooves on the same test sliding plate have the same angle with the transverse direction of the test sliding plate, and the directions of the oblique grooves on different test sliding plates have different angles with the transverse direction of the test sliding plate.

8. The method for optimizing the anti-slip performance of a sliding plate according to claim 1, characterized in that: The area of the lower surface of the weight is greater than or equal to the area of the upper contact surface of the test sliding plate, and the lower surface of the weight completely covers the upper contact surface of the test sliding plate.

9. The method for optimizing the anti-slip performance of a sliding plate according to claim 1, characterized in that: The front end of the sliding direction of the sliding slide is set to a slope shape, so that the area of the upper contact surface of the sliding slide is larger than the area of the lower contact surface, and the transported object is fixed to the sliding slide through a connecting piece. When the lower surface area of the transported object is smaller than the area of the upper contact surface of the sliding slide, a limiting structure is set around the upper contact surface of the sliding slide.

10. A system for optimizing the anti-skid performance of a sliding plate, characterized in that: include: The groove module is used to set multiple oblique grooves on the upper contact surfaces of multiple test sliding slides; the coarse sand module is used to lay coarse sand of various particle sizes in the oblique grooves of multiple test sliding slides, fix the lower contact surface of the test sliding slide to the ground, and place a heavy object on the test sliding slide; the critical traction force module is used to apply a continuously increasing traction force to the heavy object along the longitudinal direction of the test sliding slide by a traction device until the heavy object starts to slide relative to the upper contact surface of the test sliding slide, and record the critical traction force applied by the traction device; the friction coefficient function module is used to calculate the critical traction force according to the critical traction force. The friction coefficient function is determined based on gravity, the particle size of coarse sand, the angle between the direction of the oblique groove and the lateral direction of the test sliding plate, and the weight of the heavy object; an optimization module is used to determine the optimized angle between the direction of the oblique groove on the sliding plate used to carry the transported object and the lateral direction of the sliding plate, as well as the optimized particle size of the coarse sand laid in the oblique groove on the sliding plate according to the friction coefficient function, the weight of the transported object, the first preset friction coefficient of the sliding road surface and the second preset friction coefficient of the unloading position; a processing module is used to process the sliding plate according to the optimized angle and the optimized particle size.

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