Rebar splicing device with timely quality detection function and operation method thereof

Abstract

The application provides a steel bar connecting device with timely quality detection function and a running method thereof, comprising a big data analysis system, a steel bar connector installation tool and a self-locking steel bar connector. The installation tool continuously collects stroke-pressure data during the connector installation process and uploads the stroke-pressure data to the steel bar connecting big data analysis system. The big data analysis system updates the standard stroke-pressure curve of the installation tool after statistical analysis. In the steel bar connector installation process described in the application, the installation tool detects the steel bar mechanical connection quality by matching and comparing the timely stroke-pressure curve with the pre-prepared standard curve. The connectors that do not meet the requirements are marked and an alarm is sent, and remedial measures are taken, so that the steel bar connection quality is controllable, visible and traceable.

Description

Technical Field

[0001] The present invention relates to the field of steel bar connection, and in particular to a steel bar connection device with a timely quality detection function and an operation method thereof. Background Art

[0002] Prefabricated components with radial and axial deviations and non-rotatable rebar make connecting them difficult, costly, and complex. Traditional rebar connectors fail to meet mechanical performance requirements. The quality of rebar connections, achieved by extruding the connector components into the rebar ribs, is directly related to the depth and length of the serrations embedded in the rebar. Due to machining tolerances for the base circle, transverse ribs, and longitudinal ribs of various brands of hot-rolled ribbed rebar, as well as the random axial deviations of prefabricated rebar semi-finished products, the quality of extruded rebar connections is uncertain. If either the embedment depth or length does not meet the required requirements, the connection quality cannot be guaranteed. Summary of the Invention

[0003] The primary purpose of this invention is to provide a rebar connection device and operating method with timely quality inspection capabilities. This device addresses the uncertainty in the quality of extruded rebar connections caused by machining tolerances of the base circle, transverse ribs, and longitudinal ribs of various brands of hot-rolled ribbed rebar, as well as random axial deviations in prefabricated rebar semi-finished products. Furthermore, when any of the embedment depth and length parameters do not meet the requirements, the connection quality cannot be guaranteed.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a steel bar connection device with timely quality detection function, including a big data analysis system, a steel bar connector installation tool and a self-locking steel bar connector. The self-locking steel bar connector includes an inner sleeve and an outer sleeve. The inner sleeve is used to connect the ends of two steel bars, and the outer sleeve is sleeved on the outer wall of the inner sleeve;

[0005] The rebar connector installation tool includes an upper shell and a lower shell. The upper shell and the lower shell form the installation tool housing. A movable slot is opened on one side of the device housing. A lower clamp is provided at the bottom of the device housing. An upper clamp is provided inside the device housing. A driving device is provided inside the device housing. The upper clamp passes through the movable slot and is connected to the driving device.

[0006] The upper and lower clamps are clamped on the steel bar, and the driving device drives the upper clamp close to the lower clamp to press the outer sleeve onto the inner sleeve;

[0007] The big data analysis system is used to collect stroke and pressure data during the installation process of the rebar connector installation tool. The big data analysis system updates the standard stroke and pressure curve of the installation tool after statistical analysis.

[0008] In a preferred embodiment, a thread is provided inside the inner sleeve, and a plurality of slits are provided on the inner sleeve, wherein the slits are a single straight slit or a plurality of bisected slits.

[0009] In a preferred embodiment, the structure of the single straight slit is as follows: a slit is provided on the sleeve body along the axis of the inner sleeve and passes through the sleeve body vertically.

[0010] In a preferred embodiment, the structure of the multiple slits is as follows: multiple U-shaped slits are opened on the sleeve body along the axis of the inner sleeve, and the multiple U-shaped slit openings are alternately arranged on the inner sleeve;

[0011] The structure of the inner groove is that a plurality of groove bodies are opened inside the sleeve along the axis direction of the inner sleeve.

[0012] In the preferred embodiment, outer chamfers are provided at both ends of the inner sleeve, and inner chamfers are provided at both openings of the outer sleeve. The outer sleeve is inserted into the outer arm of the inner sleeve through the inner chamfers and the outer chamfers, and the outer sleeve tightens the slit of the inner sleeve.

[0013] In the preferred embodiment, the upper chuck and the lower chuck are U-shaped structures, and the distance between the U-shaped openings of the upper chuck and the lower chuck is smaller than the outer diameter of the inner sleeve;

[0014] The driving device is a hydraulic driving device or an electric telescopic rod device;

[0015] The structure of the hydraulic drive device is as follows: it includes a hydraulic cylinder body, which is arranged inside the lower housing, and a piston ring divides the inner part of the hydraulic cylinder body into two upper and lower chambers, the piston ring is connected to the lifting column, and the lifting column is sealed and slidably connected to the inside of the hydraulic cylinder body;

[0016] The first hydraulic interface and the second hydraulic interface are respectively connected to the upper and lower chambers inside the hydraulic cylinder body;

[0017] The upper clamping head is arranged on the upper end of the lifting column.

[0018] In the preferred embodiment, a mounting seat is provided at the lower end of the hydraulic cylinder body, and one end of the lower chuck is provided on the mounting seat;

[0019] One end of the upper chuck is sleeved on the upper end of the lifting column, and a lock nut is provided on the upper end of the lifting column, and the lower end of the lock nut rests on the upper surface of the upper chuck;

[0020] The lock nut is clamped or threadedly connected to the upper end of the lifting column;

[0021] There is also a pressure sensor inside the hydraulic cylinder

[0022] In the preferred embodiment, an end cover is further provided on the top of the upper shell, a control panel is provided inside the end cover, and one side of the control panel is electrically connected to the control circuit;

[0023] A battery is provided inside the end cover, the battery is electrically connected to the control panel and the control circuit, and a wireless transmission device is provided inside the control circuit;

[0024] A distance sensor is also provided on the lower surface of the end cover;

[0025] A buzzer and a warning light are also provided on the upper shell.

[0026] In the preferred solution, the big data analysis system includes an external management unit, a front end, and a back end;

[0027] The external management unit includes a data management module and a data maintenance module;

[0028] The backend includes data processing module and data storage module.

[0029] The front end includes a cloud service module, a front-end control module, and a data acquisition module;

[0030] The management unit establishes a combined data set of pressure-stroke curves for different types of axially cold-extruded self-locking steel bar connectors and different brands of steel bars through data maintenance, classifies them according to construction projects, and enters and modifies the data.

[0031] Before using the self-locking rebar connector installation tool for the first time at a new construction site, select the rebar brand, specification, and self-locking rebar connector combination through the data management module and send the data to the front end;

[0032] The front-end data acquisition module collects pressure-stroke curve data through pressure sensors and distance sensors. The control module performs preliminary processing and packaging on the data, and then uploads it to the cloud service platform through the cloud service module's intelligent gateway. The data processing module categorizes and stores normal and abnormal data uploaded by the front-end in the construction project data group, and calculates the average value of the normal pressure-stroke data of all axial cold-extruded self-locking rebar connectors under the same brand and specification of rebar. If the average value changes by more than 5%, the management personnel are notified to verify the process parameters of the rebar connector and update the pressure-stroke data interval to be sent to the front-end.

[0033] The data processing module collects statistics on the normal and abnormal pressure-stroke data of the same construction project. When the statistical pressure values ​​of the installed connectors of this project are too many abnormal data compared with the same environment, the management personnel will be notified on the data management page to take samples at the construction site and conduct relevant tests to verify the quality of the mechanical connection of the steel bars, so as to adjust the process parameters of the steel bar connectors of this construction project.

[0034] The method includes:

[0035] S1. Setting: Replace the upper and lower chucks to adapt to the axial extrusion self-locking steel bar connector for the specification steel bar, set the specifications and combination of the axial extrusion steel bar connector of the steel bar connector installation tool; the installation tool automatically adjusts the chuck distance to the initial position, L 夹头距离 =1.05×(L 内套 +L 外套 );

[0036] S2. Installation: After the self-locking rebar connector is installed and adjusted, clamp the upper and lower clamps on the two ends of the outer sleeve, press the lower clamp close to the connector and adjust the position of the installation tool so that the length of the rebar end deep into the self-locking rebar connector is roughly equal, and press the squeeze button for 2 seconds.

[0037] S3. Operation: Press the squeeze button for 2 seconds and the chucks of the steel bar connector installation tool begin to move relative to each other. When the upper and lower chucks are in contact with the connector, the hydraulic cylinder begins to load: when the pressure increases and the stroke remains unchanged, the pressure-stroke curve data begins to be recorded. When the loading pressure F 初始 Greater than the friction force F between the outer sleeve and the inner sleeve 摩擦力 When the extrusion is completed, the chucks at both ends will be stuck at the two ends of the inner sleeve, the stroke of the hydraulic cylinder remains unchanged, and the pressure F 挤压力max It will continue to increase, and when the pressure increases by 0.5 tons, the chuck automatically returns to its initial position;

[0038] S4. Quality inspection: Sampling F 初始 -F 挤压力max The pressure-stroke curve data between the two is sampled according to the pressure data corresponding to the 5mm stroke, and is compared with the pressure-stroke data interval sent by the steel bar connection quality big data analysis system in the control system, and uploaded to the steel bar connection quality big data analysis system. When the data is within the interval, the warning light lights up green, otherwise it turns red and a buzzer is used to warn;

[0039] S5. Operation: The installation tool remote control has a total of 4 buttons. There is a permanent magnet on the back, which can be adsorbed on any magnetic component according to the convenience of operation. The button functions are squeeze, stop, return, and reset;

[0040] Among them, extrusion is the action of operating the installation tool to squeeze the connector, which is automatic operation; the stop button is mainly used for emergency stop in unexpected situations. After triggering the emergency stop, you need to press the return button and wait for the chuck to return to the initial position before re-extrusion. The system automatically determines whether it is an emergency stop extrusion connector based on the pressure-stroke data and supplements or re-records the pressure-stroke curve data according to the actual situation;

[0041] The reset button is mainly used to reset connectors that fail the installation quality inspection to confirm that the operator has marked the unqualified connectors.

[0042] The present invention provides a steel bar connection device with timely quality detection function and its operation method. During the steel bar connector installation process described in the present invention, the installation tool detects the quality of the steel bar mechanical connection by matching and comparing the stroke-pressure curve with the prefabricated standard curve in a timely manner, marks the connectors that do not meet the requirements and issues an alarm, and takes remedial measures, thereby making the steel bar connection quality controllable, visible and traceable.

[0043] The installation extrusion pressure of the inner and outer sleeves of the rebar connector will change regularly with the depth and length of the serrations set on the inner sleeve embedded in the rebar ribs. The installation tool control system for rebar connections and the cloud-based big data analysis system can effectively solve the timely detection of rebar connection quality and the pressure-stroke experience curve analysis and processing functions based on big data.

[0044] Rebar connector parameters can be specifically designed based on the pressure-stroke curves of various brands of rebar mechanical connections analyzed through cloud-based big data, effectively addressing the uncertainty in rebar connection quality caused by processing tolerances of hot-rolled ribbed rebar.

[0045] The rebar connector effectively solves the problem of rebar connection in prefabricated components. Its integral inner sleeve solves the problems of other connector products such as difficult alignment of components, complex installation, and high processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be further described below with reference to the accompanying drawings and examples:

[0047] Figure 1 This is a front view of the overall appearance structure of the present invention;

[0048] Figure 2 This is the overall rear view structure diagram of the present invention;

[0049] Figure 3 This is the overall main cross-sectional structural diagram of the present invention;

[0050] Figure 4 is a structural diagram of the installation tool drive system of the present invention;

[0051] Figure 5 This is a diagram of the installation structure of the steel bar connector of the present invention;

[0052] Figure 6 This is a structural diagram of the outer sleeve of the present invention;

[0053] Figure 7 This is a structural diagram of the inner sleeve of the present invention;

[0054] Figure 8 This is a structural diagram of multiple bisecting slits of the inner sleeve of the present invention;

[0055] Figure 9 This is a diagram of the installation structure of multiple inner slits of the inner sleeve of the present invention;

[0056] Figure 10 This is a diagram showing the installation structure of the inner sleeve with multiple inner slits and two outer sleeves;

[0057] Figure 11 This is a diagram of the installation structure of multiple bisecting slits of the inner sleeve of the present invention;

[0058] Figure 12 This is a structural diagram of the installation of multiple bisecting slits of the inner casing and a single outer casing;

[0059] Figure 13 This is a diagram showing the installation structure of the straight-cut inner sleeve and the single outer sleeve of the present invention;

[0060] Figure 14 Schematic diagram of the steel bar connection quality big data analysis system of the present invention;

[0061] Figure 15 It is a schematic diagram of a combined data set of the present invention;

[0062] In the figure: upper shell 1; lower shell 2; upper chuck 3; lower chuck 4; movable slot 5; first handle 6; control panel 7; second handle 8; buzzer 9; warning light 10; first hydraulic interface 11; second hydraulic interface 12; lifting column 13; hydraulic cylinder body 14; mounting base 1401; piston ring 15; end cover 16; pressure sensor 17; control circuit 18; distance sensor 19; lock nut 20; hydraulic station 21; data analysis center 22; first steel bar end 23; second steel bar end 24; outer sleeve 25; inner sleeve 26; slit 2601; inner groove 2602. DETAILED DESCRIPTION

[0063] Example 1

[0064] like Figures 1 to 15 As shown, a rebar connection device with timely quality detection function includes a big data analysis system, a rebar connector installation tool and a self-locking rebar connector. The self-locking rebar connector includes an inner sleeve 26 and an outer sleeve 25. The inner sleeve 26 is used to connect the ends of two rebars, and the outer sleeve 25 is sleeved on the outer wall of the inner sleeve 26.

[0065] The inner diameter of the inner sleeve 26 elastically deforms under the pressure of the outer sleeve 25, shrinking its inner diameter. When the outer surface of the inner sleeve 26 contacts the inner surface of the outer sleeve 25, the inner diameter of the teeth corresponding to the contact portion of the inner and outer sleeves shrinks to the designed value, and this triangular sawtooth portion embeds into the ribs of the steel bar. Under the elastic deformation of the inner sleeve 26, the outer diameter of the inner sleeve in the non-contact portion is larger than that of the contact portion, forming a tapered body, which amplifies the torque when the outer sleeve 25 slides on the inner sleeve 26. When the outer sleeve 25 is fully squeezed and the extrusion is completed, the triangular sawtooth teeth of the inner sleeve 26 embed into the threads at both ends of the steel bar, thus completing the mechanical connection of the steel bar. The inner sleeve 26 undergoes significant elastic deformation toward the axis of the steel bar, and the sliding friction between the outer sleeve 25 and the inner sleeve 26 forms a mechanical self-locking lock, ensuring that no slip occurs before and after concrete pouring.

[0066] The implementation is as follows:

[0067] Select the combination according to the steel bar specifications, there are four combinations in total.

[0068] Place the outer sleeve 25 and the inner sleeve 26 on one end of the steel bar according to the assembly order and direction, with the outer sleeve having the chamfered end facing the inner sleeve.

[0069] If necessary, adjust the radial deviation of the steel bar, and drag the lower clamp of the installation tool to hold the steel bar connector component so that the inner sleeve 26 is positioned in the steel bar end, and the center line of the inner sleeve 26 is roughly aligned with the center line between the steel bar ends.

[0070] Use the installation tool to perform installation.

[0071] The rebar connector installation tool includes an upper shell 1 and a lower shell 2. The upper shell 1 and the lower shell 2 form an installation tool housing. A movable slot 5 is opened on one side of the device housing. A lower clamp 4 is provided at the bottom of the device housing. An upper clamp 3 is provided inside the device housing. A driving device is provided inside the device housing. The upper clamp 3 passes through the movable slot 5 and is connected to the driving device.

[0072] The upper clamp 3 and the lower clamp 4 are clamped on the steel bar, and the driving device drives the upper clamp 3 to approach the lower clamp 4 to press the outer sleeve 25 onto the inner sleeve 26.

[0073] The big data analysis system is used to collect stroke and pressure data during the installation process of the rebar connector installation tool. The big data analysis system updates the standard stroke and pressure curve of the installation tool after statistical analysis.

[0074] It includes a rebar connection quality big data analysis system, a rebar connector installation tool, and an axial cold-extruded self-locking rebar connector. The rebar connection quality big data analysis system mainly manages, collects, calculates, stores, uploads, and distributes pressure-stroke data. The axial extrusion rebar connector installation tool is the physical execution end of the rebar mechanical connection based on big data analysis, which detects the connection quality in a timely manner and is the front end of the rebar connection quality big data analysis system.

[0075] The system primarily performs pressure-stroke data collection, rebar connector installation, pressure-stroke data comparison, data upload and download, and failure alarm functions. The axially extruded rebar connector comprises two components: an inner sleeve and an outer sleeve. During the extrusion process, it utilizes mutual force transmission, elastic deformation, and plastic deformation of the rebar to mechanically connect the rebar of the prefabricated component.

[0076] How it works: The rebar connector installation tool sets the target rebar brand and specifications when used for the first time on a construction project, and automatically downloads pressure-stroke data to the control system;

[0077] Before adjusting the rebar, place the inner sleeve 26 and outer sleeve 25 of the rebar connector over one end of the rebar. After the rebar is adjusted, place the inner sleeve 26 over the rebar at both ends and adjust the position so that the lengths of the rebar at both ends within the inner sleeve 26 are equal. Clamp the upper and lower outer sleeves 25 with the installation tool's extrusion heads, respectively, and operate the installation tool to squeeze the rebar connector until installation is complete. During the installation process, the rebar connector installation tool records pressure-stroke data and uploads it to the cloud for registration. It also compares it with the downloaded data. When the set deviation is exceeded, the installation tool's alarm device issues a reminder, allowing for timely connection quality testing. The inner diameter of the axially extruded rebar connector's outer sleeve is smaller than the outer diameter of the inner sleeve. During extrusion, the outer sleeve grips the inner sleeve, shrinking its diameter. This allows the inner sleeve's serrations to engage the rebar ribs at both ends, enabling the inner sleeve's threads to engage with the rebar. At the same time, the inner sleeve's outward expansion and rebound force form a single unit with the outer sleeve, completing the mechanical connection between the two ends of the rebar.

[0078] In a preferred embodiment, the inner sleeve 26 is provided with a thread inside and a plurality of slits 2601 are provided on the inner sleeve 26. The slits 2601 are a single straight slit or a plurality of bisected slits.

[0079] In a preferred embodiment, the structure of the single straight slit is as follows: a slit is provided on the inner sleeve 26 along the axis of the inner sleeve 26 and passes through the sleeve 26 vertically.

[0080] In a preferred embodiment, the structure of the multiple slits is as follows: multiple U-shaped slits are opened on the tube body of the inner sleeve 26 along the axis of the inner sleeve 26, and the multiple U-shaped slit openings are alternately arranged on the inner sleeve 26. The alternating arrangement of the U-shaped slit openings can achieve the technical effect of tightening the sleeve 26.

[0081] The structure of the inner groove 2602 is as follows: a plurality of grooves are formed inside the inner sleeve 26 along the axis of the inner sleeve 26. The inner groove 2602 can achieve a shrinking technical effect, so that the sleeve 26 is compressed to press the steel bar.

[0082] In the preferred embodiment, outer chamfers are provided at both ends of the inner sleeve 26, and inner chamfers are provided at the opening positions at both ends of the outer sleeve 25. The outer sleeve 25 is inserted into the outer arm of the inner sleeve 26 through the inner chamfers and the outer chamfers, and the outer sleeve 25 tightens the slit 2601 of the inner sleeve 26.

[0083] The axially extruded steel bar connector includes an inner sleeve 26 and an outer sleeve 25. The inner sleeve 26 is cut with a single through-slit or a bisected slit. The outer sleeve 25 is available in single-sleeve and double-sleeve forms, and the combination method is related to the number of connections and the specifications of the connected steel bars. The surfaces of the inner sleeve 26 and the outer sleeve 25 are both sandblasted to reduce sliding friction.

[0084] The inner sleeve 26 is cut with a single through seam or a bisected seam, wherein the bisected seam is cut in a cross-cut manner at both ends through the center point of the inner sleeve and cuts to the chamfer without cutting off.

[0085] The inner diameter of the inner sleeve 26 is larger than the outer diameter of the steel bar to facilitate installation and adjustment before extrusion; the inner sleeve 26 has triangular serrations inside, and each triangular serration is a full circle rather than a triangular thread before cutting, so as to facilitate the inner sleeve to move circumferentially around the steel bar during the extrusion process.

[0086] The outer diameter of the inner sleeve 26 is between the inner and outer diameters of the outer sleeve 25. After extrusion, the inner diameter of the inner sleeve is slightly larger than the base diameter of the steel bar. Chamfers are set at both ends of the inner sleeve to reduce the contact area with the end chamfer of the outer sleeve and reduce friction.

[0087] The outer sleeve 25 has a single sleeve and a double sleeve form, wherein the single sleeve and the double sleeve have the same structure, wherein the length of the single sleeve is twice that of the double sleeve and is the same as the inner sleeve 26 degrees.

[0088] The inner diameter of the outer sleeve 25 is between the inner and outer diameters of the inner sleeve, and a chamfer is provided toward the end of the inner sleeve 26. During the extrusion process of the outer sleeve 25 relative to the inner sleeve 26, the chamfer of the inner sleeve 26 slides on the chamfer at the end of the outer sleeve, thereby playing a guiding role.

[0089] In the preferred embodiment, the upper chuck 3 and the lower chuck 4 are U-shaped structures, and the distance between the U-shaped openings of the upper chuck 3 and the lower chuck 4 is smaller than the outer diameter of the inner sleeve 26;

[0090] The driving device is a hydraulic driving device or an electric telescopic rod device;

[0091] The structure of the hydraulic drive device is as follows: it includes a hydraulic cylinder 14, which is arranged inside the lower housing 2. The piston ring 15 divides the interior of the hydraulic cylinder 14 into two upper and lower chambers. The piston ring 15 is connected to the lifting column 13, and the lifting column 13 is in sealed sliding connection with the interior of the hydraulic cylinder 14.

[0092] The first hydraulic interface 11 and the second hydraulic interface 12 are respectively connected to the upper and lower chambers inside the hydraulic cylinder body 14;

[0093] The upper clamping head 3 is arranged at the upper end of the lifting column 13 .

[0094] In the preferred embodiment, a mounting seat 1401 is provided at the lower end of the hydraulic cylinder body 14, and one end of the lower chuck 4 is disposed on the mounting seat 1401;

[0095] One end of the upper chuck 3 is sleeved on the upper end of the lifting column 13, and a lock nut 20 is provided on the upper end of the lifting column 13, and the lower end of the lock nut 20 abuts against the upper surface of the upper chuck 3;

[0096] The lock nut 20 is clamped or threadedly connected to the upper end of the lifting column 13;

[0097] The hydraulic cylinder 14 is also provided with a pressure sensor 17

[0098] In the preferred embodiment, an end cover 16 is further provided on the top of the upper housing 1, a control panel 7 is provided inside the end cover 16, and one side of the control panel 7 is electrically connected to the control circuit 18;

[0099] A battery is provided inside the end cover 16, and the battery is electrically connected to the control panel 7 and the control circuit 18, and a wireless transmission device is provided inside the control circuit 18;

[0100] The lower surface of the end cover 16 is also provided with a distance sensor 19;

[0101] A buzzer 9 and a warning light 10 are also provided on the upper housing 1 .

[0102] Example 2

[0103] Further illustrate with reference to Example 1, Figure 1-15 As shown in the structure, the big data analysis system includes an external management unit, a front end, and a back end;

[0104] The external management unit includes a data management module and a data maintenance module;

[0105] The backend includes data processing module and data storage module.

[0106] The front end includes a cloud service module, a front-end control module, and a data acquisition module;

[0107] The management unit establishes a combined data set of pressure-stroke curves for different types of axially cold-extruded self-locking steel bar connectors and different brands of steel bars through data maintenance, classifies them according to construction projects, and enters and modifies the data.

[0108] Before using the self-locking rebar connector installation tool for the first time at a new construction site, select the rebar brand, specification, and self-locking rebar connector combination through the data management module and send the data to the front end;

[0109] The front-end data acquisition module collects pressure-stroke curve data through the pressure sensor 17 and the distance sensor 19. The control module performs preliminary processing and packaging on the data, and then uploads it to the cloud service platform through the intelligent gateway of the cloud service module. The data processing module categorizes and stores the normal and abnormal data uploaded by the front-end in the construction project data group, and calculates the average value of the normal pressure-stroke data of all axial cold-extruded self-locking rebar connectors under the same brand and specification of rebar. If the average value changes by more than 5%, the management personnel are notified to verify the process parameters of the rebar connector and update the pressure-stroke data interval to be sent to the front-end.

[0110] The data processing module collects statistics on the normal and abnormal pressure-stroke data of the same construction project. When the statistical pressure values ​​of the installed connectors of this project are too many abnormal data compared with the same environment, the management personnel will be notified on the data management page to take samples at the construction site and conduct relevant tests to verify the quality of the mechanical connection of the steel bars, so as to adjust the process parameters of the steel bar connectors of this construction project.

[0111] The axially extruded rebar connector installation tool is compact and suitable for rapid installation in confined spaces. It includes a control panel, pressure sensor, distance sensor, power source hydraulic station, hydraulic cylinder, and chucks. The inner width of the upper and lower chucks is the same as that of the inner sleeve. When extrusion begins, the chucks engage the ends of the outer sleeve. When extrusion is complete, the chucks engage the ends of both the inner and outer sleeves, ensuring that the final travel of the upper and lower outer sleeves on the inner sleeve is consistent.

[0112] The control system matches and updates pressure-stroke data stored in a cloud platform connected via the Internet of Things (IoT) for different manufacturers' rebar products. During operation, the pressure-stroke curve of the effective installation is compared with the downloaded data. If the deviation exceeds the set value, the installation tool alarm device issues an audible and visual alert, and the data is uploaded to the cloud for registration. Once the connector is installed, the pressure-stroke data for this extrusion is uploaded and statistically analyzed using cloud-based big data to update the manufacturer's rebar product pressure-stroke data.

[0113] Example 3

[0114] Further illustrate with reference to Examples 1-2, Figure 1-13The structure shown is set up as follows: replace the upper and lower clamps to adapt to the axial extrusion self-locking steel bar connector for the specification steel bar, set the steel bar connector installation tool axial extrusion steel bar connector specifications and combination mode; the installation tool automatically adjusts the clamp distance to the initial position, L 夹头距离 =1.05×(L 内套 +L 外套 );.

[0115] Installation: After the self-locking steel bar connector is installed and adjusted, clamp the upper and lower clamps on both ends of the outer sleeve 25, press the lower clamp against the connector and adjust the position of the installation tool so that the length of the steel bar end deep into the self-locking steel bar connector is roughly equal, and press the squeeze button for 2 seconds.

[0116] Operation: Press the squeeze button for 2 seconds and the chucks of the steel bar connector installation tool begin to move relative to each other. When the upper and lower chucks are in contact with the connector, the hydraulic cylinder begins to load: When the pressure increases and the stroke remains unchanged, the pressure-stroke curve data begins to be recorded. When the loading pressure F 初始 Greater than the friction force F between the outer sleeve 25 and the inner sleeve 26 摩擦力 When the extrusion is completed, the chucks at both ends will be stuck at the two ends of the inner sleeve, the stroke of the hydraulic cylinder remains unchanged, and the pressure F 挤压力max The pressure will continue to increase, and when the pressure increases by 0.5 tons, the chuck automatically returns to its initial position.

[0117] Quality inspection: Sampling F 初始 -F 挤压力max The pressure-stroke curve data between the two is sampled according to the pressure data corresponding to the 5mm stroke, and is compared with the pressure-stroke data interval issued by the steel bar connection quality big data analysis system in the control system, and uploaded to the steel bar connection quality big data analysis system. When the data is within the interval, the warning light lights up green, otherwise it turns red and warns through the buzzer.

[0118] Operation: The installation tool remote control has a total of 4 buttons, with a permanent magnet on the back, which can be adsorbed on any magnetic component according to the convenience of operation. The button functions are squeeze, stop, return, and reset;

[0119] Among them, extrusion is the action of operating the installation tool to squeeze the connector, which is automatic operation; the stop button is mainly for emergency stop in unexpected situations. After triggering the emergency stop, you need to press the return button and wait for the chuck to return to the initial position before you can squeeze again. The system automatically determines whether it is an emergency stop extrusion connector based on the pressure-stroke data and supplements or re-records the pressure-stroke curve data according to the actual situation.

[0120] The reset button is mainly used to reset connectors that fail the installation quality inspection to confirm that the operator has marked the unqualified connectors.

[0121] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A steel bar connection device with a quality detection function, characterized by: The invention comprises a big data analysis system, a steel bar connector installation tool and a self-locking steel bar connector, wherein the self-locking steel bar connector comprises an inner sleeve (26) and an outer sleeve (25), wherein the inner sleeve (26) is used to connect the ends of two steel bars, and the outer sleeve (25) is sleeved on the outer wall of the inner sleeve (26); The steel bar connector installation tool comprises an upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) form an installation tool housing, a movable groove (5) is provided on one side of the device housing, a lower clamp (4) is provided at the bottom of the device housing, an upper clamp (3) is provided inside the device housing, a driving device is provided inside the device housing, and the upper clamp (3) passes through the movable groove (5) and is connected to the driving device; The upper clamp (3) and the lower clamp (4) are clamped on the steel bar, and the driving device drives the upper clamp (3) to approach the lower clamp (4), pressing the outer sleeve (25) onto the inner sleeve (26); The big data analysis system is used to collect the stroke and pressure data during the installation process of the rebar connector installation tool. The big data analysis system updates the standard stroke and pressure curve of the installation tool after statistical analysis; The upper chuck (3) and the lower chuck (4) are U-shaped structures, and the distance between the U-shaped openings of the upper chuck (3) and the lower chuck (4) is smaller than the outer diameter of the inner sleeve (26); The driving device is a hydraulic driving device or an electric telescopic rod device; The structure of the hydraulic drive device is as follows: it includes a hydraulic cylinder (14), the hydraulic cylinder (14) is arranged inside the lower housing (2), the piston ring (15) divides the interior of the hydraulic cylinder (14) into two upper and lower chambers, the piston ring (15) is connected to the lifting column (13), and the lifting column (13) is sealed and slidably connected to the interior of the hydraulic cylinder (14); The first hydraulic interface (11) and the second hydraulic interface (12) are respectively connected to the upper and lower chambers inside the hydraulic cylinder body (14); The upper clamp (3) is arranged at the upper end of the lifting column (13); A mounting seat (1401) is provided at the lower end of the hydraulic cylinder body (14), and one end of the lower clamp (4) is arranged on the mounting seat (1401); One end of the upper chuck (3) is sleeved on the upper end of the lifting column (13), and a lock nut (20) is provided on the upper end of the lifting column (13), and the lower end of the lock nut (20) abuts against the upper surface of the upper chuck (3); The lock nut (20) is snap-fitted or threadedly connected to the upper end of the lifting column (13); A pressure sensor (17) is also provided inside the hydraulic cylinder (14); The big data analysis system includes an external management unit, a front-end, and a back-end; The external management unit includes a data management module and a data maintenance module; The backend includes data processing module and data storage module. The front end includes a cloud service module, a front-end control module and a data acquisition module.

2. The steel bar connection device with quality detection function according to claim 1, characterized in that: The inner sleeve (26) is provided with a thread inside, and a plurality of slits (2601) are provided on the inner sleeve (26). The slits (2601) are a single straight slit, or a plurality of opposite slits, or a plurality of inner grooves (2602).

3. The steel bar connection device with quality detection function according to claim 2, characterized in that: The structure of the single straight slit is as follows: a slit is provided on the inner sleeve (26) body along the axial direction of the inner sleeve (26) and is passed through from top to bottom.

4. The steel bar connection device with quality detection function according to claim 2, characterized in that: The structure of the multiple slits is as follows: multiple U-shaped slits are opened on the inner sleeve (26) along the axial direction of the inner sleeve (26), and the multiple U-shaped slit openings are alternately arranged on the inner sleeve (26); The structure of the inner groove (2602) is as follows: a plurality of grooves are provided inside the inner sleeve (26) along the axial direction of the inner sleeve (26).

5. The steel bar connection device with quality detection function according to claim 2, characterized in that: The inner sleeve (26) is provided with outer chamfers at both ends, and the outer sleeve (25) is provided with inner chamfers at both ends of the opening. The outer sleeve (25) is inserted into the outer arm of the inner sleeve (26) by matching the inner chamfers with the outer chamfers. The outer sleeve (25) tightens the slit (2601) of the inner sleeve (26).

6. The steel bar connection device with quality detection function according to claim 1, characterized in that: An end cover (16) is further provided on the top of the upper shell (1), a control panel (7) is provided inside the end cover (16), and one side of the control panel (7) is electrically connected to the control circuit (18); A battery is provided inside the end cover (16), and the battery is electrically connected to the control panel (7) and the control circuit (18), and a wireless transmission device is provided inside the control circuit (18); The lower surface of the end cover (16) is also provided with a distance sensor (19); A buzzer (9) and a warning light (10) are also provided on the upper housing (1).

7. The steel bar connection device with quality detection function according to claim 6, characterized in that: The management unit establishes a combined data set of pressure-stroke curves for different types of axially cold-extruded self-locking steel bar connectors and different brands of steel bars through data maintenance, classifies them according to construction projects, and enters and modifies the data. Before using the self-locking rebar connector installation tool for the first time at a new construction site, select the rebar brand, specification, and self-locking rebar connector combination through the data management module and send the data to the front end; The front-end data acquisition module collects pressure-stroke curve data through the pressure sensor (17) and the distance sensor (19), performs preliminary processing and packaging on the data through the control module, and uploads the data to the cloud service platform through the intelligent gateway of the cloud service module; The data processing module categorizes and stores normal and abnormal data uploaded by the front-end in the construction project data group. It also calculates the average of the normal pressure-stroke data for all axially cold-extruded self-locking rebar connectors under rebars of the same brand and specification. If the average value changes by more than 5%, the management staff is notified to verify the process parameters of the rebar connector and update the pressure-stroke data interval to be sent to the front-end. The data processing module collects statistics on the normal and abnormal pressure-stroke data of the same construction project. When the statistical pressure values ​​of the installed connectors of this project are too many abnormal data compared with the same environment, the management personnel will be notified on the data management page to take samples at the construction site and conduct relevant tests to verify the quality of the mechanical connection of the steel bars, so as to adjust the process parameters of the steel bar connectors of this construction project.

8. The method for operating a steel bar connection device with a quality detection function according to claim 7, wherein: The method includes: S1. Setting: Replace the upper and lower chucks to adapt to the axial extrusion self-locking steel bar connector for the specification steel bar, set the specifications and combination of the axial extrusion steel bar connector of the steel bar connector installation tool; the installation tool automatically adjusts the chuck distance to the initial position, L 夹头距离 =1.05×(L 内套 +L 外套 ); S2. Installation: After the self-locking steel bar connector is installed and adjusted, clamp the upper and lower clamps at both ends of the outer sleeve (25), close the lower clamp to the connector and adjust the position of the installation tool so that the length of the steel bar end inserted into the self-locking steel bar connector is roughly equal, and press the squeeze button for 2 seconds; S3. Operation: Press the squeeze button for 2 seconds and the chucks of the steel bar connector installation tool begin to move relative to each other. When the upper and lower chucks are in contact with the connector, the hydraulic cylinder begins to load: when the pressure increases and the stroke remains unchanged, the pressure-stroke curve data begins to be recorded. When the loading pressure F 初始 Greater than the friction force F between the outer sleeve (25) and the inner sleeve (26) 摩擦力 When the extrusion is completed, the chucks at both ends will be stuck at the two ends of the inner sleeve, the stroke of the hydraulic cylinder remains unchanged, and the pressure F 挤压力max It will continue to increase, and when the pressure increases by 0.5 tons, the chuck automatically returns to its initial position; S4. Quality inspection: Sampling F 初始 -F 挤压力max The pressure-stroke curve data between the two is sampled according to the pressure data corresponding to the 5mm stroke, and is compared with the pressure-stroke data interval sent by the steel bar connection quality big data analysis system in the control system, and uploaded to the steel bar connection quality big data analysis system. When the data is within the interval, the warning light lights up green, otherwise it turns red and a buzzer is used to warn; S5. Operation: The installation tool remote control has a total of 4 buttons. There is a permanent magnet on the back. It can be adsorbed on any magnetic component according to the convenience of operation. The button functions are squeeze, stop, return, and reset. Among them, extrusion is the action of operating the installation tool to squeeze the connector, which is automatic operation; the stop button is mainly used for emergency stop in unexpected situations. After triggering the emergency stop, you need to press the return button to wait for the chuck to return to the initial position and squeeze again. The system automatically determines whether it is an emergency stop extrusion connector based on the pressure-stroke data and supplements or re-records the pressure-stroke curve data according to the actual situation; The reset button is mainly used to reset connectors that fail the installation quality inspection to confirm that the operator has marked the unqualified connectors.

Images