CN219084722U

CN219084722U - Bolt anti-slip coefficient detection device

Info

Publication number: CN219084722U
Application number: CN202223147447.0U
Authority: CN
Inventors: 徐晓; 张海鑫; 李闯
Original assignee: Suzhou Time Stone Intelligent Technology Co ltd
Current assignee: Suzhou Time Stone Intelligent Technology Co ltd
Priority date: 2022-11-27
Filing date: 2022-11-27
Publication date: 2023-05-26
Anticipated expiration: 2032-11-27

Abstract

The utility model belongs to the technical field of bolt mechanics detection, and discloses a device for detecting a slip resistance coefficient of a bolt, which comprises the following components: the front side of the front shell is provided with a window, and a touch screen can be installed in an embedded mode; the back shell is provided with a plurality of mounting hole columns embedded with metal threads, the mounting hole columns are fixed with the front shell, the touch screen, the key board and the main control board, and three serial port type interfaces and a power interface are formed in a groove on the back surface of the back shell; the main control board can be powered by external power supply or lithium battery, is provided with a first serial port and a second serial port which are respectively communicated and interacted with the touch screen and external equipment, and is provided with four sensor interfaces which can be simultaneously connected with four force sensors; a touch screen as a medium for operation interaction and information display; the power supply assembly comprises a lithium battery pack, a power adapter and a power switch. The measuring device can detect and display the anti-slip coefficient of the bolt in real time, has a compact structure, is simple to operate, can be applied in a portable manner, and can improve the test efficiency.

Description

Bolt anti-slip coefficient detection device

Technical Field

The utility model relates to a device for detecting an anti-slip coefficient of a bolt, and belongs to the technical field of bolt mechanics detection.

Background

In the high-strength bolt connection, the high-strength bolt is screwed down, so that the screw rod generates pretension force to press the contact surface of the component, the relative sliding of the component is prevented by the friction force of the contact surface, the purpose of force transmission is achieved, and the friction force between the plates is overcome by external force to be used as a limit state. The anti-slip coefficient of the high-strength bolt is the ratio of the external force generated when the friction surface of the connecting piece slides to the sum of the pretension force of the high-strength bolt perpendicular to the friction surface in the high-strength bolt connection.

The anti-slip coefficient of the bolt is one of main design parameters of friction type bolt connection, the bearing capacity of the component is directly affected, the anti-slip coefficient test and the recheck of the friction surface of the high-strength bolt connection should be respectively carried out in the steel structure manufacturing and mounting units, and the anti-slip coefficient test of the friction surface should be independently carried out on the component friction treated on site.

The existing bolt anti-slip calibrating device structure generally adopts a sheet metal shell, works through an external power supply, and a measuring device does not support portable mobile application and does not have a data uploading function, so that similar devices have defects in the aspects of measuring convenience, product portability, data uploading and the like, and are not beneficial to improving test efficiency and realizing the requirement of networking management of measuring equipment.

Disclosure of Invention

Therefore, the technical problem solved by the utility model is to solve the structural arrangement problem of the shell, the main control panel, the touch screen, the battery assembly and the key assembly and optimize the functional integration scheme of the product system, so as to provide the high-precision bolt anti-slip coefficient measuring device which is simple to operate, light in weight and supports data uploading networking and portable mobile application.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a bolt anti-slip coefficient detection device, comprising: the touch screen comprises a main control panel, a touch screen, a shell, a key assembly and a power supply assembly; the main control board is in communication and electric connection with the touch screen through a first serial port, and is respectively connected with external equipment and a power adapter through a second serial port and a power port which are arranged on the opening of the rear shell; the main control board is provided with two serial port type interfaces through the opening of the rear shell, and can be simultaneously connected with four paths of force sensors; the main control board receives the measured value of the force sensor and then sends the measured value to the touch screen for display through the first serial port; the main control board comprises a main chip basic circuit, a power supply processing circuit, an input/output circuit, an analog-to-digital conversion circuit, a serial port communication circuit and a charge/discharge management circuit.

Further, the shell comprises a front shell and a rear shell; the front window of the front shell can be embedded with a touch screen; the back shell is provided with a plurality of mounting hole columns embedded with metal threads, wherein the mounting hole columns are fixed with the front shell, the touch screen, the key board and the main control board, and the back surface of the back shell is provided with three serial port type interfaces and a power interface.

Further, the key assembly comprises a key board and four silica gel keys, and the key board is electrically connected with the main control board.

Further, the power supply assembly comprises a lithium battery pack, a power adapter and a power switch, and is used for supplying power to the detection device and controlling the lithium battery pack to carry out charge and discharge management through a charging circuit arranged on the main control board.

Further, the touch screen is in communication and electric connection with the main control board, so that the functions of touch operation, detection setting, force value verification, data display and storage are realized.

Further, the shell is made of ABS plastic.

Further, the lithium battery pack is mounted and fixed in a matched manner through a plurality of baffles and adhesive tapes which are arranged on the rear shell.

Further, the specification and model number of the lithium battery pack are two strings and two parallel, and the rated voltage level is 7.4V.

The technical scheme of the utility model has the following advantages.

1. According to the detection device for the anti-slip coefficient of the bolt, provided by the utility model, a group of two-string and two-parallel lithium battery packs are arranged in the detection device, the electric quantity management of the lithium battery is carried out through the charge-discharge management circuit on the main control board, two modes of lithium battery power supply and external power supply are supported, the application scene requirement of portable mobile measurement is realized, the defect that the existing product only supports an external power supply working mode is overcome, and the test working convenience is improved.

2. The anti-slip coefficient detection device for the bolts provided by the utility model has the advantages that the outer shell comprises the front shell and the rear shell, and the front shell and the rear shell are both formed by adopting ABS plastic materials through injection molding, so that compared with the sheet metal structure adopted by the existing product, the weight of the single product is greatly reduced, and the portability of the product is greatly enhanced.

3. According to the device for detecting the anti-slip coefficient of the bolt, provided by the utility model, the main control board is provided with the two serial communication circuits which are respectively connected with the touch screen and the external equipment, and the two serial communication circuits can be in communication connection with the external equipment through serial communication, so that the uploading of test data and the networking of the equipment are realized, and the problem that the existing product does not have networking and data uploading is solved.

Drawings

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Fig. 1 is a front view of the overall structure of a device for detecting the anti-slip coefficient of a bolt.

Fig. 2 is a rear view of the entire structure of the bolt slip resistance coefficient detecting device.

Fig. 3 is a front view internal structural diagram of the overall structure of the bolt slip resistance coefficient detection device.

Fig. 4 is a rear view internal structural diagram of the entire structure of the bolt slip resistance coefficient detecting device.

Reference numerals illustrate: 11. a front housing; 12. a rear housing; 13. rear shell texture; 21. a main control board; 22. a second serial port; 23. a first sensor interface; 24. a second sensor interface; 31. a silica gel key; 32. a key sheet; 41. a lithium battery pack; 42. a power interface; 43. a power switch; 51. a touch screen.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a device for detecting anti-slip coefficient of a bolt includes a front housing 11, a rear housing 12, a main control board 21, a silica gel key 31, a key board 32, a lithium battery pack 41, a power interface 42, a power switch 43, and a touch screen 51.

The housing is made of ABS plastic material and is formed by injection molding, and comprises a front housing 11 and a rear housing 12. The front shell 11 is windowed with a position which is matched with the size area of the touch screen and is embedded and installed, and square holes for placing four silica gel keys 31 are formed in the position. The location of the openings in the rear housing 12 includes: a power interface 42 hole site, a second serial port 22 hole site, a first sensor interface 23 hole site, a second sensor interface 23 hole site, and a power switch 42 hole site; four mounting hole columns embedded with metal threaded holes are arranged in the rear shell 12 and are used for being tightly matched and fixed with the front shell 11, and two of the mounting hole columns are also used for mounting and fixing the touch screen 51; another mounting hole column embedded with a metal threaded hole is arranged in the rear shell 12 for fixing the touch screen 51; three embedded metal threaded holes are formed in the rear shell 12 and used for installing and fixing the key board 32; the exterior of the rear shell 12 is provided with lines 13, so that the product is convenient and reliable to take and portable and movable to use.

The interface of the main control board 21 comprises a first serial port (not shown) connected with the touch screen, a second serial port 22 connected with external equipment, a power interface 42 connected with a power adapter, a 43 connected with a power switch, a first sensor interface 23 connected with the first two paths of force sensors and a second sensor interface 24 connected with the second two paths of force sensors. The main control board 21 collects original electric signals of the four paths of force sensors through the first sensor interface 23 and the second sensor interface 24, and sends the converted code values to the touch screen 51 through an analog-to-digital conversion circuit on the main control board 21. The touch screen 51 converts the received channel code value into a specific force value according to the calibration table to display the final force value.

The main control board 21 further comprises a main chip basic circuit, a power supply processing circuit, an input/output circuit, an analog-to-digital conversion circuit, a serial port communication circuit and a charge/discharge management circuit, wherein the charge/discharge management circuit is used for calculating the SOC electric quantity parameters of the lithium battery pack 41 in real time; the input circuit is used for acquiring the state of the silica gel key 31 and the charge and discharge state of the lithium battery pack 41 in real time; the output circuit controls whether the touch screen 51 is powered or not according to the SOC electric quantity parameter of the lithium battery pack 41; the serial communication circuit is used for the main control board 21 to communicate with the touch pad 51 and external devices respectively, and upload data. The collected relevant parameters can be displayed through the touch screen 51, so that a user can conveniently grasp the use condition of the detection device and the measurement data of the four force sensors.

The key board 32 is provided with a printed circuit board processing technology of the exposed copper sheet at the position of the silica gel key 31, so that the reliable conduction function of the key can be realized when the silica gel key is pressed down, the state of the key can be detected, and the key board 32 is electrically connected with the main control board 21. Specifically, the key board 32 is disposed below the silica gel key 31, and is used for sensing when the silica gel key 31 is pressed, and determining which one of the pressed silica gel keys 31 is, so that the main control board 21 can collect the status of the silica gel key 31 in real time. Through setting up silica gel button 31 and touch-sensitive screen 51 cooperation and use, further improve the convenience of test operation.

The lithium battery pack 41, the power interface 42, and the power switch 43 constitute a power module, and the lithium battery pack 41 is connected to a charge/discharge management circuit on the main control board 21 and is subjected to charge/discharge management by the latter. Specifically, the two supported power modes include external power and lithium battery pack power, wherein the external power channel provides power to the entire measurement device via the power interface 42 for the power adapter including charging the lithium battery pack; when the external power supply is disconnected, the lithium battery pack 41 can supply power to the whole measuring device, so that the application of portable movement is realized, and of course, the external discharging depth of the lithium battery pack 41 is controlled by the main control board 21, and when the current available electric quantity of the lithium battery pack 41 is lower than a calibrated threshold value (usually set to be 5%), the main control board 21 cuts off the power supply to the touch screen 51 and enables the touch screen 51 to enter a low-power sleep mode.

The force sensor adopts a load sensor in the prior art, and is a sensor for measuring a force value. In this embodiment, four force sensors are connected to the main control board 21 through the first sensor interface 23 and the second sensor interface 24. When the four force sensors are installed and used, the steps and the operation are carried out according to the test standard specified by the anti-slip coefficient of the bolts.

The first serial port (not shown) and the second serial port 22 are related art, and the serial ports are also called serial communication interfaces or serial communication interfaces, and are expansion interfaces adopting a serial communication mode. The main control board 21 and the touch screen 51 perform data interaction through a first serial port. The communication line is simple, and two-way communication can be realized only by a pair of transmission lines, so that the cost is greatly reduced, and the working principle and structure of the serial port are well known to those skilled in the art and are not described in detail herein.

The touch screen 51 is a touch screen or touch panel, and the touch screen 51 is an induction type liquid crystal display device capable of receiving input signals such as contacts, when the touch screen contacts with graphic buttons on the screen, the touch feedback system on the screen can drive various connecting devices according to a preprogrammed program, and a vivid audio/video effect is produced by the liquid crystal display. In this embodiment, embedded software is run in the touch screen 51, so that functions such as data processing, result display, report processing, test setting, etc. can be realized. The bolt anti-slip coefficient detection means displays the anti-slip coefficient value on the touch screen 51 through a graphical interface. The graphical interface is more visually acceptable to the user, which may enhance the operating experience.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A bolt anti-slip coefficient detection device, characterized by comprising: the touch screen comprises a main control panel, a touch screen, a shell, a key assembly and a power supply assembly; the main control board is in communication and electric connection with the touch screen through a first serial port, and is respectively connected with external equipment and a power adapter through a second serial port and a power port which are arranged on the opening of the rear shell; the main control board is provided with two serial port type interfaces through the opening of the rear shell, and can be simultaneously connected with four paths of force sensors; the main control board receives the measured value of the force sensor and then sends the measured value to the touch screen for display through the first serial port; the main control board comprises a main chip basic circuit, a power supply processing circuit, an input/output circuit, an analog-to-digital conversion circuit, a serial port communication circuit and a charge/discharge management circuit.

2. The device for detecting a coefficient of slip resistance of a bolt according to claim 1, wherein the housing comprises a front housing and a rear housing; the front window of the front shell can be embedded with a touch screen; the back shell is provided with a plurality of mounting hole columns embedded with metal threads, wherein the mounting hole columns are fixed with the front shell, the touch screen, the key board and the main control board, and the back surface of the back shell is provided with three serial port type interfaces and a power interface.

3. The device for detecting a coefficient of sliding resistance of a bolt according to claim 1, wherein the key assembly comprises a key sheet and four silica gel keys, and the key sheet is electrically connected with the main control board.

4. The device for detecting the anti-slip coefficient of the bolt according to claim 1, wherein the power supply assembly comprises a lithium battery pack, a power adapter and a power switch, and the power adapter is used for supplying power to the detection device and controlling the charging/discharging management of the lithium battery pack through a charging circuit arranged on the main control board.

5. The device for detecting the anti-slip coefficient of the bolt according to claim 1, wherein the touch screen is in communication and electric connection with the main control board, and functions of touch operation, detection setting, force value verification, data display and storage are realized.

6. The device for detecting the anti-slip coefficient of a bolt according to claim 2, wherein the housing is made of ABS plastic.

7. The device for detecting a slip coefficient of a bolt according to claim 4, wherein the lithium battery pack is mounted and fixed by a plurality of baffles and adhesive tapes arranged on the rear case.

8. The device for detecting the anti-slip coefficient of the bolt according to claim 4, wherein the specification and the model of the lithium battery pack are two by two, and rated voltage level is 7.4V.