An automatic detection device for anti-slip coefficient

Abstract

This invention discloses an automatic anti-slip coefficient detection device, belonging to the technical field of anti-slip coefficient detection devices. The invention includes a work console; hardware components are fixed on the upper surface of the work console; the output end of the work console is connected to a pressure sensor; a connecting pair is slidably engaged with the work console; the pressure sensor is threadedly engaged with the connecting pair; the connecting pair includes a connecting pair slide and a slip coefficient plate; the slip coefficient plate is slidably engaged with the connecting pair slide. This invention, by installing the anti-slip coefficient connecting pair into the device, uses software to control the motor's operation, increasing the output torque through an RV reducer to meet torque output requirements. When the pressure sensor on the high-strength bolt reaches a predetermined value, the motor is stopped; different specifications of high-strength bolts provide different output torques.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-slip coefficient detection devices, and in particular relates to an anti-slip coefficient automatic detection device. Background Art

[0002] The anti-slip coefficient is mainly used in the detection test of high-strength bolts in steel bridges. The JTG / TF50-2011 standard requires that the plate surface (friction surface) of components bolted with high-strength bolts on the construction site must be treated, and the anti-slip coefficient value after treatment should meet the design requirements. In this context, the use of high-grade and high-requirement bridge steel has become an inevitable choice.

[0003] There are three main ways to connect steel bridges: welding, bolting, and riveting. The welding method has the disadvantages of poor plasticity and toughness, greater brittleness, reduced fatigue strength, changes in the metallographic structure and mechanical properties of the welded parts due to high temperature, and brittleness of some parts. The riveting method has a complex structure, a large amount of steel, and troublesome construction. It was the main connection method for early steel bridges. It is rarely used now and has been replaced by welding and high-strength bolt connections. The high-strength bolt connection method has the advantages of easy installation, no sliding between connected components, and high rigidity. It is particularly suitable for installation and connection on construction sites.

[0004] The anti-slip coefficient refers to the ratio of the external force that causes the friction surface of the connection to slide in the high-strength bolt connection of the steel structure to the sum of the preload of the high-strength bolts perpendicular to the friction surface. The anti-slip coefficient of the friction surface of the high-strength bolt connection is the main control parameter of the high-strength bolt connection. Whether it can meet the design requirements is the key to ensure the safe use of the steel structure, and is directly related to the safety performance, engineering cost and service life of the steel structure. GB50205-2001 "Steel Structure Construction Quality Acceptance Code" and JTG-TF502011 "Highway Bridge and Culvert Construction Technical Code" both clearly stipulate that the anti-slip coefficient test is a mandatory provision in the steel structure construction quality acceptance code, and its test structure must meet the design requirements. The anti-slip coefficient is directly related to the quality of the steel and the material of the coating. All the control methods of the high-strength bolts used in the steel structure connection have only one purpose, which is to make the tightening tension of the high-strength bolts meet the design requirements and make the steel structure panel connection stable through the friction of the panel. The primary factor for the stability of the steel structure panel connection is the anti-slip coefficient of the panel.

[0005] The current process of anti-slip coefficient verification:

[0006] 1. Install the pressure sensor and test connection pair according to the standard.

[0007] 2. Fix the installed connection pair to the microcomputer-controlled electronic universal testing machine, and connect the four pressure sensors to the control box.

[0008] 3. Use a torque wrench to preload each screw to 190KN. Let stand for 10 minutes until the pressure reading on the control box stabilizes, then make a mark on the connection pair.

[0009] 4. Start the test, wait for the connection pair to move, stop the test machine, observe the movement of the two sets of plates, and take the set with the larger displacement to calculate. How to get the anti-slip coefficient.

[0010] Under the current conditions, two people can only perform 3 to 4 sets of anti-slip tests a day.

[0011] The most important factor restricting efficiency: Applying pre-tightening force to the connection pair requires manual application of a torque wrench, which is labor-intensive and prone to fatigue.

[0012] The standard stipulates that the preload force of the connection pair is 190KN, but human control is not so precise. The applied force is generally between 190KN and 210KN, which will cause a certain error in the test results. Summary of the invention

[0013] The purpose of the present invention is to provide an automatic detection device for anti-slip coefficient. After the anti-slip coefficient connection pair is installed on the device, the software controls the motor to run, and the output torque is increased through the RV reducer to meet the torque output requirement. When the pressure sensor on the high-strength bolt reaches a predetermined value, the motor is controlled to stop. High-strength bolts of different specifications provide different output torques, which solves the existing problems.

[0014] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0015] The present invention discloses an automatic detection device for anti-slip coefficient, comprising a working control console surface; a hardware component is fixed on the upper surface of the working control console surface; a signal at the output end of the working control console surface is connected to a pressure sensor; the connecting pair is slidably matched with the working control console surface; the pressure sensor is rotationally matched with the connecting pair thread; the connecting pair comprises a connecting pair slide and a slip coefficient plate; the slip coefficient plate is slidably matched with the connecting pair slide; a high-strength bolt assembly is fixedly connected to the surface of the slip coefficient plate; a sliding frame is slidably connected to the bottom of the connecting pair slide; the slip coefficient plate is fixedly connected to the pressure sensor via a high-strength bolt assembly.

[0016] Furthermore, a first inverted trapezoidal slide rail is symmetrically fixedly connected to the top of the work control console surface; and the first inverted trapezoidal slide rail is slidably matched with the sliding frame.

[0017] Furthermore, the hardware components include a motor, an RV reducer and a display; the output end of the motor is fixedly mounted on the side of the RV reducer; the display and the RV reducer are fixedly mounted side by side on the work control console surface.

[0018] Furthermore, a rotating sleeve is fixedly connected to the output end of the RV reducer; and the rotating sleeve is snap-fitted with a high-strength fastening bolt assembly.

[0019] Furthermore, the slip coefficient plate includes a first panel and a second panel; the two first panels are slidably matched between the two second panels; a plurality of mounting holes are linearly distributed on the surfaces of the first panel and the second panel; and the mounting holes are plug-fitted with the high-strength bolt assembly.

[0020] Furthermore, the connecting auxiliary slide is composed of two sliding plates; a panel slide groove is opened on the side of the sliding plate; a first inverted trapezoidal slide groove is opened at the bottom of the sliding plate; and the first inverted trapezoidal slide groove is slidably matched with the sliding frame.

[0021] Furthermore, the sliding frame includes a second inverted trapezoidal slide rail; a connecting plate is symmetrically fixedly connected to the bottom of the second inverted trapezoidal slide rail; a second inverted trapezoidal slide groove is formed at the bottom of the connecting plate; and the second inverted trapezoidal slide groove is slidably matched with the work control console surface.

[0022] Furthermore, the high-strength bolt assembly includes a high-strength bolt, a gasket, a fastening nut and a baffle; the gasket, the pressure sensor, the baffle and the fastening nut are sequentially arranged on the high-strength bolt.

[0023] Furthermore, the distance between the connection pair and the hardware component is adjusted by slidingly cooperating with the second inverted trapezoidal slide groove and the first inverted trapezoidal slide rail on the work control console surface; the rotation of the rotating sleeve drives the rotation of the high-strength bolt by engaging with the high-strength fastening bolt assembly; the test is started, and when the connection pair has displacement behavior, the testing machine is stopped, the movement of the two panels is observed, and the group with the larger displacement is taken for calculation to obtain the anti-slip coefficient; after the anti-slip coefficient connection pair is installed on the device, the work control console surface controls the motor to run, and the output torque is increased through the RV reducer to meet the torque output requirement; when the pressure sensor on the high-strength bolt reaches a predetermined value, the motor is controlled to stop; high-strength bolts of different specifications provide different output torques.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention has a simple structure and saves manpower. The detection task that originally required two people to complete can now be completed by one person.

[0026] 2. The present invention fully adopts sensors and motor control, which can accurately control the preload force and reduce the test error.

[0027] 3. The present invention improves work efficiency and is expected to double the detection speed. After the anti-slip coefficient connection pair is installed on the device, the software controls the motor to run, and the output torque is increased through the RV reducer to meet the torque output requirements. When the pressure sensor on the high-strength bolt reaches a predetermined value, the motor is controlled to stop. High-strength bolts of different specifications provide different output torques.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of an automatic detection device for anti-slip coefficient of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the connection pair of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of connecting the secondary right viewing angle of the present invention;

[0033] Figure 4 It is a schematic structural diagram of the pressure sensor of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the connecting auxiliary slide of the present invention;

[0035] Figure 6 It is a schematic structural diagram of the slip coefficient plate of the present invention;

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1-hardware assembly, 2-high-strength bolt assembly, 3-pressure sensor, 4-working control console surface, 5-connecting pair, 6-sliding frame, 101-motor, 102-RV reducer, 103-display, 104-rotating sleeve, 201-high-strength bolt, 202-gasket, 203-fastening nut, 204-baffle, 401-first inverted trapezoidal slide rail, 501-connecting pair slide, 502-slip coefficient plate, 5011-sliding plate, 5012-panel slide, 5013-first inverted trapezoidal slide, 5021-first panel, 5022-second panel, 5023-mounting hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "bottom", "top", "side", "peripheral side", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1-6 As shown, the present invention is an automatic detection device for anti-slip coefficient, including a work control console surface 4; a hardware component 1 is fixed on the upper surface of the work control console surface 4, the output signal of the work control console surface 4 is connected to the pressure sensor 3, and the connection pair 5 is slidably matched with the work control console surface 4; the pressure sensor 3 is threadedly matched with the connection pair 5; the connection pair 5 includes a connection pair slide 501 and a slip coefficient plate 502; the slip coefficient plate 502 is slidably matched with the connection pair slide 501; the surface of the slip coefficient plate 502 is fixedly connected with a high-strength bolt assembly 2; the bottom of the connection pair slide 501 is slidably connected with a sliding frame 6; the slip coefficient plate 502 is fixedly connected with the pressure sensor 3 through the high-strength bolt assembly 2; the work control console surface 4 is used for the control and support of the overall system; after the anti-slip coefficient connection pair 6 is installed on the device, the work control console surface 4 controls the motor 101 to run, and the output torque is increased through the RV reducer 102 to meet the torque output requirements. When the pressure sensor 3 on the high-strength bolt 201 reaches a predetermined value, the motor 101 is controlled to stop. High-strength bolts 201 of different specifications provide different output torques.

[0041] See also Figure 1 As shown, the hardware component 1 includes a motor 101, an RV reducer 102 and a display 103; the output end of the motor 101 is fixedly mounted on the side of the RV reducer 102; the display 103 and the RV reducer 102 are fixedly mounted side by side on the work control console surface 4; the hardware part is composed of the motor 101, the RV reducer 102, the display 103, various switching power supplies, and circuit boards, and the power source for tightening displays the readings through the display screen 3.

[0042] See also Figure 2-6As shown, the slip coefficient plate 502 includes a first panel 5021 and a second panel 5022; the two first panels 5021 are slidably matched between the two second panels 5022; the surfaces of the first panel 5021 and the second panel 5022 are linearly distributed with a plurality of mounting holes 5023; the mounting holes 5023 are plugged and matched with the high-strength bolt assembly 2; the connecting sub-slide 501 is composed of two sliding plates 5011; a panel slide groove 5012 is opened on the side of the sliding plate 5011; a first inverted trapezoidal slide groove 5013 is opened at the bottom of the sliding plate 5011; the first inverted trapezoidal slide groove 5013 is slidably matched with the sliding frame 6; the test is started, and when the connecting pair 5 has displacement behavior, the testing machine is stopped, the movement of the two panels is observed, and the group with the larger displacement is taken for calculation, thereby obtaining the anti-slip coefficient.

[0043] See also Figure 1 and Figure 2 As shown, the top of the work control console table 4 is symmetrically fixedly connected with a first inverted trapezoidal slide rail 401; the first inverted trapezoidal slide rail 401 is slidably matched with the sliding frame 6; the sliding frame 6 includes a second inverted trapezoidal slide rail 601; the bottom of the second inverted trapezoidal slide rail 601 is symmetrically fixedly connected with a connecting plate 602; the bottom of the connecting plate 602 is provided with a second inverted trapezoidal slide groove 603; the second inverted trapezoidal slide groove 603 is slidably matched with the work control console table 4; through the sliding match between the second inverted trapezoidal slide groove 603 and the first inverted trapezoidal slide rail 401 on the work control console table 4, the distance between the connecting pair 5 and the hardware component 1 can be adjusted, which facilitates the installation and disassembly of the connecting pair 5 and the high-strength bolt assembly 2.

[0044] See also Figure 1-3 As shown, the output end of the RV reducer 102 is fixedly connected with a rotating sleeve 104; the rotating sleeve 104 is snap-fitted with the high-strength fastening bolt assembly 2; the high-strength bolt assembly 2 includes a high-strength bolt 201, a gasket 202, a fastening nut 203 and a baffle 204; the gasket 202, the pressure sensor 3, the baffle 204 and the fastening nut 203 are sequentially arranged on the high-strength bolt 201; the rotating sleeve 104 is snap-fitted with the high-strength fastening bolt assembly 2, and the rotation of the rotating sleeve 104 drives the rotation of the high-strength bolt 201.

[0045] See also Figure 1-6 As shown, the distance between the connection pair 5 and the hardware component 1 is adjusted by slidingly cooperating with the second inverted trapezoidal slide groove 603 and the first inverted trapezoidal slide rail 401 on the work control console surface 4;

[0046] The rotating sleeve 104 is engaged with the high-strength fastening bolt assembly 2, and the rotation of the rotating sleeve 104 drives the rotation of the high-strength bolt 201; the test is started, and when the connection pair 5 has displacement behavior, the testing machine is stopped, the movement of the two panels is observed, and the group with the larger displacement is taken for calculation, so as to obtain the anti-slip coefficient; after the anti-slip coefficient connection pair 6 is installed to the device, the working control console 4 controls the operation of the motor 101, and the output torque is increased through the RV reducer 102 to meet the torque output requirement; when the pressure sensor 3 on the high-strength bolt 201 reaches a predetermined value, the motor 101 is controlled to stop; high-strength bolts 201 of different specifications provide different output torques.

[0047] The specific working principle of the present invention is:

[0048] The second inverted trapezoidal slide groove 603 is slidably matched with the first inverted trapezoidal slide rail 401 on the work control console surface 4, so that the distance between the connection pair 5 and the hardware component 1 can be adjusted, which facilitates the installation and removal of the connection pair 5 and the high-strength bolt assembly 2; the hardware part is composed of a motor 101, an RV reducer 102, a display 103, various switch power supplies, and a circuit board. The power source for tightening displays the reading through the display screen 3; the high-strength fastening bolt assembly 2 is engaged and matched by the rotating sleeve 104, and the rotation of the rotating sleeve 104 drives the rotation of the high-strength bolt 201; start the test, wait for the connection pair 5 to have displacement behavior, stop the test machine, observe the movement of the two panels, take the group with the larger displacement, and calculate, so as to obtain the anti-slip coefficient; the work control console surface 4 is used for the control and support of the overall system; after the anti-slip coefficient connection pair 6 is installed on the device, the work control console surface 4 controls the motor 101 to run, and through the RV reducer 102, the output torque is increased to meet the torque output requirements. When the pressure sensor 3 on the high-strength bolt 201 reaches a predetermined value, the motor 101 is controlled to stop. High-strength bolts 201 of different specifications provide different output torques.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic detection device for anti-slip coefficient, comprising a working control panel (4); a hardware component (1) is fixed on the upper surface of the working control panel (4); an output signal of the working control panel (4) is connected to a pressure sensor (3); a connecting pair (5) is slidably matched with the working control panel (4); the pressure sensor (3) and the connecting pair (5) are threadedly matched; the characteristics are: The connecting pair (5) comprises a connecting pair slide (501) and a slip coefficient plate (502); the slip coefficient plate (502) and the connecting pair slide (501) are slidably matched; a high-strength bolt assembly (2) is fixedly connected to the surface of the slip coefficient plate (502); a sliding frame (6) is slidably connected to the bottom of the connecting pair slide (501); the slip coefficient plate (502) and the pressure sensor (3) are fixedly connected via the high-strength bolt assembly (2); a first inverted trapezoidal slide rail (401) is symmetrically fixedly connected to the top of the working control console surface (4); the first inverted trapezoidal slide rail (401) and the sliding frame (6) are slidably matched; the hardware component (1) comprises a motor (101), an RV reducer (102) and a display (103); the output end of the motor (101) is fixedly mounted on the side of the RV reducer (102); the display (103) and the RV reducer (102) are fixedly mounted side by side on the working control console surface (4); the RV The output end of the reducer (102) is fixedly connected with a rotating sleeve (104); the rotating sleeve (104) is snap-fitted with the high-strength bolt assembly (2); the slip coefficient plate (502) includes a first panel (5021) and a second panel (5022); the two first panels (5021) are slidably fitted between the two second panels (5022); the surfaces of the first panel (5021) and the second panel (5022) are both linearly distributed with a plurality of mounting holes (5023); the mounting holes (5023) are plug-fitted with the high-strength bolt assembly (2); the connecting auxiliary slide (501) is composed of two sliding plates (5011); the side of the sliding plate (5011) is provided with a panel sliding groove (5012); the bottom of the sliding plate (5011) is provided with a first inverted trapezoidal sliding groove (5013); the first inverted trapezoidal sliding groove (5013) is slidably fitted with the sliding frame (6).

2. The automatic detection device for anti-slip coefficient according to claim 1, characterized in that: The sliding frame (6) comprises a second inverted trapezoidal slide rail (601); a connecting plate (602) is symmetrically fixedly connected to the bottom of the second inverted trapezoidal slide rail (601); a second inverted trapezoidal slide groove (603) is formed at the bottom of the connecting plate (602); and the second inverted trapezoidal slide groove (603) is slidably matched with the work control console surface (4).

3. The automatic detection device for anti-slip coefficient according to claim 2, characterized in that: The high-strength bolt assembly (2) comprises a high-strength bolt (201), a gasket (202), a fastening nut (203) and a baffle (204); the gasket (202), the pressure sensor (3), the baffle (204) and the fastening nut (203) are sequentially arranged on the high-strength bolt (201).

4. A detection method using the automatic detection device for anti-slip coefficient as claimed in claim 3, characterized in that: The following steps are involved: A. adjusting the distance between the connection pair (5) and the hardware component (1) by slidingly cooperating the second inverted trapezoidal slide groove (603) with the first inverted trapezoidal slide rail (401) on the work control console surface (4); B. The rotating sleeve (104) is engaged with the high-strength bolt assembly (2), and the rotation of the rotating sleeve (104) drives the high-strength bolt (201) to rotate; C. Start the test, wait for the connection pair (5) to move, stop the test machine, observe the movement of the two panels, take the group with the larger displacement, and calculate to obtain the anti-slip coefficient; D. The working control panel (4) controls the motor (101) to run, and increases the output torque through the RV reducer (102) to meet the torque output requirement; When the pressure sensor (3) on the high-strength bolt (201) reaches a predetermined value, the motor (101) is controlled to stop; High-strength bolts (201) of different specifications provide different output torques.

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