CN111779736A - Steel finger joint connecting piece - Google Patents
Steel finger joint connecting piece Download PDFInfo
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- CN111779736A CN111779736A CN202010674879.3A CN202010674879A CN111779736A CN 111779736 A CN111779736 A CN 111779736A CN 202010674879 A CN202010674879 A CN 202010674879A CN 111779736 A CN111779736 A CN 111779736A
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- fixing
- finger joint
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- 210000001145 finger joint Anatomy 0.000 title claims abstract description 78
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000011159 matrix material Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
- G01L1/2231—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being disc- or ring-shaped, adapted for measuring a force along a single direction
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/187—Machine fault alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a steel finger joint connecting piece, which comprises a sub-finger joint piece, a connecting piece and a connecting piece, wherein the sub-finger joint piece is used for being welded with an upright post and is connected with the sub-finger joint piece through a tenon wedge body; the female finger joint piece is used for welding with square steel, is connected with the male finger joint piece through a tenon wedge body and is used for connecting and fixing the male finger joint piece and the female finger joint piece; the detection module data monitoring unit is used for monitoring the pressure on the fixing ring in real time during connection, and the data processing unit is used for receiving information sent by the data monitoring unit, judging whether the steel finger-joint connecting piece is overloaded during connection and judging whether the fixing ring is broken or deformed during the use of the connecting piece; the detection system monitors the pressure borne by the fixing ring in real time, judges whether overload occurs or not in real time according to detection data, and ensures the reliability of the connecting piece.
Description
Technical Field
The invention belongs to the field of connecting pieces, and particularly relates to a steel finger joint connecting piece.
Background
In engineering, connection is the most common technical means, and connection methods are also various.
At present, the steel structure connection adopts field welding and bolt connection. The on-site welding technology is high in requirement, long in time consumption, only capable of being disassembled destructively, time consumption is needed for bolt connection installation and disassembly, labor intensity of workers is high, and attractiveness is poor.
Disclosure of Invention
The invention aims to solve the problems and provides a steel finger joint connecting piece which comprises a sub finger joint piece, a main finger joint piece, a tenon wedge body and a detection module, wherein the main finger joint piece is used for being welded with a stand column and is connected with the sub finger joint piece through the tenon wedge body; the positioning baffle is used for positioning the sub-finger joint piece when being matched with the sub-finger joint piece, and the fixing ring is used for fixing the inserted tenon wedge body. The sub-finger joint piece is used for welding square steel and is connected with the main finger joint piece through a tenon wedge body, wherein the upper surface of the bottom plate is used for welding the square steel, and correspondingly, the lower surface of the bottom plate is used for arranging a fixing ring and a positioning baffle plate to receive the inserted tenon wedge body; the positioning baffle is used for positioning the female finger joint piece when being matched with the female finger joint piece, and the fixing ring is used for fixing the inserted tenon wedge body. The tenon wedge body is used for connecting the fixed sub-finger joint piece and the female finger joint piece, and the tenon wedge body comprises a positioning baffle and a fixing body, wherein the positioning baffle is used for positioning the insertion depth of the tenon wedge body, and the fixing body is used for being matched with the fixing ring to connect the fixed sub-finger joint piece and the female finger joint piece.
Further, the data monitoring unit is used for monitoring the pressure applied to the fixing ring in real time during connection, and performing self-inspection on the working condition of the strain gauge to ensure that the strain gauge works normally. The data processing unit is used for receiving the information sent by the data monitoring unit, comparing the information with preset data, prompting a user of the connection condition, judging whether the connection is overloaded or not, judging whether the connecting piece breaks down or not in the use process of the connecting piece, and sending out early warning.
Furthermore, the strain gauge is arranged in the inner surface of the fixing ring, M positions are taken on the inner surface of the fixing ring, the stress at the M positions is obtained through strain gauge detection and is recorded as a stress function, and correspondingly, the data monitoring unit records the fixing ring of the embodiment as a first fixing ring, a second fixing ring, a third fixing ring, a fourth fixing ring and a fifth fixing ring in sequence; strain gage stress data acquired in the first retaining ring is recorded as a first retaining ring stress function a1(f1, f2 … … fm), where f1 represents the stress at the first location and fm represents the stress at the mth location. In this way, the remaining retaining ring stress functions a2, A3, a4, a5 are shown in sequence.
Furthermore, the data monitoring unit is used for being connected with the strain gauge in the fixing ring and monitoring the strain value of the strain gauge of the fixing ring in real time. The data monitoring system is internally provided with a real-time data matrix P (A1, A2, A3, A4, A5), wherein A1 represents a stress function of a first fixing ring, A2 represents a stress function of a second fixing ring, A3 represents a stress function of a third fixing ring, A4 represents a stress function of a fourth fixing ring, and A5 represents a stress function of a fifth fixing ring. The data monitoring unit continuously monitors the stress function data of the strain gauge in the fixing ring and continuously records the stress function data into a real-time data matrix P (A1, A2, A3, A4 and A5).
Furthermore, the data monitoring unit has a self-checking function, each position of the fixing ring is continuously stressed in a connected state, stress change in each position of the fixing ring is continuous, and stress change of adjacent strain gauges does not exceed a certain value, so that a standard positive difference value A0 is arranged in the data monitoring unit, the standard positive difference value A0 is related to the interval of the strain gauges, and the smaller the interval is, the smaller the A0 is; in the connection state, the working condition of the internal strain gauge of the first fixing ring is self-checked, the data monitoring unit compares the absolute value of the difference between the first position stress f1 and the second position stress f2 with a standard positive difference value A0,
if | f1-f2| > A0, judging that the position strain gauge has a fault, if | f1-f2| < A0, continuing to the next step, comparing the absolute value of the difference between the second position stress f2 and the third position stress f3 with a standard positive difference value A0,
if | f2-f3| > A0, judging that the position strain gauge fails, if | f2-f3| < A0, continuing the next step, and so on, and comparing the stress of all positions in the fixed ring.
If the number of the strain gauges which have faults after the self-checking is finished exceeds a preset proportion K0, the data provided by the strain gauges in the fixing ring is judged to be invalid, the data monitoring unit does not detect the stress data in the area any more, and a voice warning prompt is sent to prompt that the stress borne by the fixing ring cannot be detected.
Further, the data processing unit is used for receiving data matrix information sent by the data monitoring unit, judging whether the fixing ring of the connecting piece is overloaded or not according to a stress function in a real-time data matrix P (A1, A2, A3, A4 and A5), and monitoring whether the connecting piece is in failure or not; a data processing matrix F (A10, A20, A30, A40 and A50) is arranged in the data processing matrix, wherein A10 represents a first fixing ring preset stress function, A20 represents a second fixing ring preset stress function, A30 represents a third fixing ring preset stress function, A40 represents a fourth fixing ring preset stress function, and A50 represents a fifth fixing ring preset stress function; preset stress bearing ranges F1, F2, F3, F4, and F5, where F1 represents a first retaining ring preset stress, F2 represents a second retaining ring preset stress bearing range, F3 represents a third retaining ring preset stress bearing range, F4 represents a fourth retaining ring preset stress bearing range, and F5 represents a fifth retaining ring preset stress bearing range.
The data processing unit detects the fixing rings according to a preset processing sequence when processing data, in the steel finger-joint connecting piece of the embodiment, the first fixing ring and the fifth fixing ring are stressed most and mainly have a fixing function, so that whether the first fixing ring is overloaded or not is judged firstly,
in the first fixing ring, the stress value of each position in the stress function a1(F1, f2... fm) of the first fixing ring is compared with the absolute value of the difference value of the stress value of each position in the preset a10(F10, F20.. fm0) of the first fixing ring with a preset stress range F1, and whether the first fixing ring is overloaded or not is judged.
If the first position stress value F1 is greater than the preset first position stress value F10 and | F1-F10| > F1, the position is overloaded, and so on, the stress value of each position is compared with the corresponding preset stress value and whether the position is overloaded is judged, if the number of the overloaded stress positions is greater than the total number m of the stress positions, the fixed ring is judged to be overloaded by the first fixed ring, at the moment, the overload warning of the connecting piece is directly sent out, and the detection is stopped.
If the first position stress value f1 is smaller than the predetermined first position stress value f10, f1< f10, it is determined that the position is not overloaded, and then, in this way, it is determined whether the fifth retaining ring is overloaded,
if the fifth fixing ring is overloaded, directly sending out an overload alarm of the connecting piece, stopping detection, and if the fifth fixing ring is not overloaded, detecting the second fixing ring;
if the second fixing ring is overloaded, recording overload information, and continuing to detect the fourth fixing ring, and if the second fixing ring is not overloaded, detecting the fourth fixing ring;
if the fourth fixing ring is overloaded, sending out an overload alarm of the connecting piece, and stopping detection; if the fourth fixing ring is not overloaded, the third fixing ring is continuously detected,
and if the third fixing ring is overloaded, sending an overload alarm to finish detection.
Further, the data processing unit is internally provided with a preset deformation stress difference f0, and when the connection is judged to be successful, the time-corresponding real-time data matrix P (a1, a2, A3, a4, A5) is recorded as an initial data matrix P0(G1, G2, G3, G4, G5), wherein G1 represents a first anchor ring initial stress function G1(gf1, gf2.. gfm), G2 represents a second anchor ring initial stress function G2(gf1, gf2.. gfm), G3 represents a third anchor ring initial stress function G3(gf1, gf2.. gfm), G4 represents a fourth anchor ring initial stress function G4(gf1, gf2.. gfm), and G5 represents a fifth anchor ring initial stress function G5 (1, gf2.. gfm); and continues to receive information sent by the data processing unit.
In the first fixing ring, the difference value of the stress value of each position in the initial stress function G1(gf1, gf2.. gfm) of the first fixing ring and the stress value of each position in the real-time stress function p1(f1, f2... fm) of the first fixing ring is compared with a preset fracture stress range D, and whether the fixing ring fractures or not is judged.
In the first fixing ring, the first fixing ring is provided with a first fixing ring,
if | f1-gf1| < D, continuing to detect the next position, and if | f1-gf1| > D, judging that the stress change of the first position exceeds the fracture range;
if | f2-gf1| < D, continuing to monitor the next position, and if | f2-gf1| > D, judging that the stress change of the first position exceeds the fracture range; and in the same way, detecting whether the stress of all the positions exceeds the fracture range, and if the stress change of more than half of the positions exceeds the fracture range, indicating that the fixing ring is fractured or seriously deformed. Correspondingly, whether all the fixing rings are broken or seriously deformed is detected in real time by the method.
Furthermore, when the steel finger joint connecting piece is used, if the lower surface of the bottom plate of the main finger joint piece is welded with the upright column, the upper surface of the sub finger joint piece is welded with the square steel, and after the main finger joint piece and the sub finger joint piece are spliced, the tenon wedge body is inserted into the fixing ring to be beaten and fixed, so that the connection is completed, and the column-beam connecting piece is formed.
Compared with the prior art, the invention has the technical effects that the detection system monitors the pressure borne by the fixing ring in real time, judges whether overload occurs or not and deformation or fracture occurs or not in real time according to the detection data, and ensures the reliability of the connecting piece.
Particularly, the data monitoring unit is used for being connected with the strain gauge in the fixing ring and monitoring the strain value of the strain gauge of the fixing ring in real time. The data monitoring system is internally provided with a real-time data matrix P (A1, A2, A3, A4, A5), wherein A1 represents a stress function of a first fixing ring, A2 represents a stress function of a second fixing ring, A3 represents a stress function of a third fixing ring, A4 represents a stress function of a fourth fixing ring, and A5 represents a stress function of a fifth fixing ring. The data monitoring unit continuously monitors the stress function data of the strain gauge in the fixing ring and continuously records the stress function data into a real-time data matrix P (A1, A2, A3, A4 and A5). Because the most critical part of connecting piece is solid fixed ring, and gu fixed ring receives the stress the biggest, the most fragile, consequently, carry out real-time, continuous detection to solid fixed ring internal stress, be favorable to judging the connection condition of connecting piece.
Particularly, the data processing unit is used for receiving data matrix information sent by the data monitoring unit, judging whether the fixing ring of the connecting piece is overloaded or not according to a stress function in a real-time data matrix P (A1, A2, A3, A4 and A5), and monitoring whether the connecting piece is in failure or not; a data processing matrix F (A10, A20, A30, A40 and A50) is arranged in the data processing matrix, wherein A10 represents a first fixing ring preset stress function, A20 represents a second fixing ring preset stress function, A30 represents a third fixing ring preset stress function, A40 represents a fourth fixing ring preset stress function, and A50 represents a fifth fixing ring preset stress function; preset stress bearing ranges F1, F2, F3, F4, and F5, where F1 represents a first retaining ring preset stress, F2 represents a second retaining ring preset stress bearing range, F3 represents a third retaining ring preset stress bearing range, F4 represents a fourth retaining ring preset stress bearing range, and F5 represents a fifth retaining ring preset stress bearing range.
The data processing unit detects the fixing rings according to a preset processing sequence when processing data, in the steel finger-joint connecting piece of the embodiment, the first fixing ring and the fifth fixing ring are stressed most and mainly have a fixing function, so that whether the first fixing ring is overloaded or not is judged firstly,
in the first fixing ring, the stress value of each position in the stress function a1(F1, f2... fm) of the first fixing ring is compared with the absolute value of the difference value of the stress value of each position in the preset a10(F10, F20.. fm0) of the first fixing ring with a preset stress range F1, and whether the first fixing ring is overloaded or not is judged.
If the first position stress value F1 is greater than the preset first position stress value F10 and | F1-F10| > F1, the position is overloaded, and so on, the stress value of each position is compared with the corresponding preset stress value and whether the position is overloaded is judged, if the number of the overloaded stress positions is greater than the total number m of the stress positions, the fixed ring is judged to be overloaded by the first fixed ring, at the moment, the overload warning of the connecting piece is directly sent out, and the detection is stopped.
If the first position stress value f1 is smaller than the predetermined first position stress value f10, f1< f10, it is determined that the position is not overloaded, and then, in this way, it is determined whether the fifth retaining ring is overloaded,
if the fifth fixing ring is overloaded, directly sending out an overload alarm of the connecting piece, stopping detection, and if the fifth fixing ring is not overloaded, detecting the second fixing ring;
if the second fixing ring is overloaded, recording overload information, and continuing to detect the fourth fixing ring, and if the second fixing ring is not overloaded, detecting the fourth fixing ring;
if the fourth fixing ring is overloaded, sending out an overload alarm of the connecting piece, and stopping detection; if the fourth fixing ring is not overloaded, the third fixing ring is continuously detected,
and if the third fixing ring is overloaded, sending an overload alarm to finish detection.
The data processing unit of the invention judges whether the pressure in the fixing ring is overloaded or not, finds out the problem in time, avoids the accident caused by overload installation, and improves the reliability of the connecting piece
In particular, the data processing unit is internally provided with a preset deformation stress difference f0, and when the connection is judged to be successful, the time corresponding to the real-time data matrix P (a1, a2, A3, a4, A5) is recorded as an initial data matrix P0(G1, G2, G3, G4, G5), wherein G1 represents a first anchor ring initial stress function G1(gf1, gf2.. gfm), G2 represents a second anchor ring initial stress function G2(gf1, gf2.. gfm), G3 represents a third anchor ring initial stress function G3(gf1, gf2.. gfm), G4 represents a fourth anchor ring initial stress function G4(gf1, gf2.. gfm), and G5 represents a fifth anchor ring initial stress function G5(gf1, gf2.. gfm); and continues to receive information sent by the data processing unit.
In the first fixing ring, the difference value of the stress value of each position in the initial stress function G1(gf1, gf2.. gfm) of the first fixing ring and the stress value of each position in the real-time stress function p1(f1, f2... fm) of the first fixing ring is compared with a preset fracture stress range D, and whether the fixing ring fractures or not is judged.
In the first fixing ring, the first fixing ring is provided with a first fixing ring,
if | f1-gf1| < D, continuing to detect the next position, and if | f1-gf1| > D, judging that the stress change of the first position exceeds the fracture range;
if | f2-gf1| < D, continuing to monitor the next position, and if | f2-gf1| > D, judging that the stress change of the first position exceeds the fracture range; and in the same way, detecting whether the stress of all the positions exceeds the fracture range, and if the stress change of more than half of the positions exceeds the fracture range, indicating that the fixing ring is fractured or seriously deformed. Correspondingly, whether all the fixing rings are broken or seriously deformed is detected in real time by the method. The processing module monitors the stress condition of the connected fixing ring in real time, judges whether the fixing ring is broken or seriously deformed, avoids accidents and ensures the reliability of the connecting piece.
Drawings
FIG. 1 is an exploded view of a steel finger joint connector according to an embodiment of the present invention;
FIG. 2 is a schematic assembly view of a steel finger joint connector according to an embodiment of the present invention.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, which is an exploded structural view of a steel finger joint connector according to an embodiment of the present invention, the steel finger joint connector according to the embodiment of the present invention includes a sub finger joint member 3, a main finger joint member 2, a data monitoring module of a tenon wedge 1, and a data processing unit, wherein the main finger joint member 2 is used for welding with a column, and is connected with the sub finger joint member 3 through the tenon wedge 1, and the steel finger joint connector includes a bottom plate 8, a fixing ring 6, and positioning baffles 4 and 5, wherein a lower surface of the bottom plate 8 is used for welding the column, and correspondingly, an upper surface of the bottom plate 8 is used for arranging the fixing ring 6 and the positioning baffles to receive the inserted tenon wedge 1; the positioning baffle 4 is used for positioning the sub-finger joint piece when the sub-finger joint piece is matched, and the fixing ring 6 is used for fixing the inserted tenon wedge body 1. The sub-finger joint 3 is used for welding with square steel and is connected with the main finger joint 2 through the tenon wedge body 1, and comprises a bottom plate 10, a fixing ring 9 and a positioning baffle plate 11, wherein the upper surface of the bottom plate 10 is used for welding the square steel, and correspondingly, the lower surface of the bottom plate is used for arranging the fixing ring 9 and the positioning baffle plate 11 to bear the inserted tenon wedge body 1; the positioning baffle 11 is used for positioning the female finger joint piece 2 when being matched with the female finger joint piece 2, and the fixing ring 9 is used for fixing the inserted tenon wedge body 1. The tenon wedge body 1 is used for connecting the fixed sub-finger connector 3 and the female finger connector 2 and comprises a positioning baffle plate 12 and a fixing body 13, wherein the positioning baffle plate 12 is used for positioning the insertion depth of the tenon wedge body 1, and the fixing body 13 is used for being matched with the fixing rings 6 and 9 to connect the fixed sub-finger connector 3 and the female finger connector 2.
As shown in fig. 1, the base plate 8 of the female finger joint is a rectangular plate-shaped structure with a preset length and a preset width, the lower surface of the base plate is used for welding the upright posts, the upper surface of the base plate is used for receiving the tenon wedge bodies, the positioning baffles 4 and 5 are arranged along the long sides and the wide sides of the rectangle on the upper surface of the base plate, the preset width is left between the arrangement position of the positioning baffles and the outer edge of the base plate 8, and the positioning baffles 4 and 5 are rectangular plate-shaped structures with preset height and width and are used for matching with the male finger joint 3 to position the male finger joint. The upper surface of the bottom plate 8 is provided with a plurality of fixing rings 6 which are arranged at the inner sides of the positioning baffle plates 4 and 5, preset intervals are arranged among the fixing rings 6, the fixing rings 6 are of concave structures with openings facing the bottom plate, and a plurality of strain gauges are arranged on the inner surface of the fixing rings and are not drawn on the drawing, so that the stress on each part of the fixing rings 6 after the tenon wedge body 1 is inserted into the tenon wedge body can be detected. The fixing ring 6 is provided with a preset length, a preset width and a preset height, and is used for enabling the tenon-wedge body 1 to penetrate through, fixing the tenon-wedge body 1 and positioning the position of the sub-finger joint piece when the sub-finger joint piece is matched.
As shown in fig. 1, the base plate 10 of the sub-finger joint is a rectangular plate-shaped structure with a predetermined length and width, the upper surface of the base plate is used for welding square steel, the lower surface of the base plate is used for receiving the tenon wedge 1, the positioning baffle 11 is arranged along the long rectangular edge of the upper surface of the base plate, the positioning baffle 11 is a rectangular plate-shaped structure, and the predetermined height and width of the positioning baffle are the same as those of the positioning baffle 4 of the main finger joint and are used for matching with the main finger joint 2 to position the main finger joint 2. The lower surface of the bottom plate 10 is provided with a plurality of fixing rings 9 which are arranged at the inner sides of the positioning baffle plates 11, preset intervals are arranged among the fixing rings 9 so that the positioning rings 6 and 9 can be staggered when the sub-finger connecting piece 3 is matched with the main finger connecting piece 2, the fixing rings 9 are of concave structures with openings facing the bottom plate, and the inner surfaces of the fixing rings 9 are provided with a plurality of strain gauges for detecting stress applied to all parts of the fixing rings 9 after the tenon wedge body 1 is inserted. The fixing ring 9 is preset with the length, width and height the same as those of the female finger joint piece fixing ring 6, so that the tenon wedge body 1 can penetrate through, and the tenon wedge body 1 is fixed to position the female finger joint piece 2 when being matched with the female finger joint piece 2.
As shown in fig. 1, the positioning baffle 12 of the tenon-wedge 1 is a rectangular plate-shaped structure, the height of the positioning baffle is the same as the width of the positioning baffle arranged along the rectangular wide edge of the upper surface of the base plate of the female finger joint 2, so as to limit the insertion depth of the tenon-wedge 1, the fixing block 13 of the tenon-wedge 1 is an i-shaped structure, of course, it can be understood by those skilled in the art that the fixing block can be a concave structure or a rectangular structure as long as the actual stress requirement can be met, the length of the fixing block is a preset length, the width of the cross section, and the height of the fixing block is a preset size, and the fixing block 13 is used for connecting the female finger joint 2 and the male finger joint 3.
Particularly, the data monitoring unit is used for monitoring the pressure received by the fixing rings 6 and 9 in real time during connection, and performing self-inspection on the working condition of the strain gauge to ensure that the strain gauge works normally. The data processing unit is used for receiving the information sent by the data monitoring unit, comparing the information with preset data, prompting a user of the connection condition, judging whether the connection is overloaded or not, judging whether the connecting piece breaks down or not in the use process of the connecting piece, and sending out early warning.
Specifically, referring to fig. 2, which is a schematic view illustrating an assembly of a steel finger joint connector according to a real-time embodiment of the present invention, the strain gauge is disposed in an inner surface of a fixing ring, M positions are taken on inner surfaces of fixing rings 6 and 9, and stress at the M positions is obtained through strain gauge detection and is recorded as a stress function, and correspondingly, a data monitoring unit records the fixing rings of the present embodiment in sequence as a first fixing ring 901, a second fixing ring 601, a third fixing ring 902, a fourth fixing ring 602, and a fifth fixing ring 903; strain gage stress data acquired in the first retaining ring is recorded as a first retaining ring stress function a1(f1, f2 … … fm), where f1 represents the stress at the first location and fm represents the stress at the mth location. In this way, the remaining retaining ring stress functions a2, A3, a4, a5 are shown in sequence.
Specifically, the data monitoring unit is used for being connected with the strain gauge in the fixing ring and monitoring the strain value of the strain gauge of the fixing ring in real time. The data monitoring system is internally provided with a real-time data matrix P (A1, A2, A3, A4, A5), wherein A1 represents a stress function of a first fixing ring, A2 represents a stress function of a second fixing ring, A3 represents a stress function of a third fixing ring, A4 represents a stress function of a fourth fixing ring, and A5 represents a stress function of a fifth fixing ring. The data monitoring unit continuously monitors the stress function data of the strain gauge in the fixing ring and continuously records the stress function data into a real-time data matrix P (A1, A2, A3, A4 and A5).
Specifically, the data monitoring unit has a self-checking function, each position of the fixing ring is continuously stressed in a connected state, stress change in each position fixing ring is continuous, and stress change of adjacent strain gauges does not exceed a certain value, so that a standard positive difference value A0 is arranged in the data monitoring unit, the standard positive difference value A0 is related to the interval of the strain gauges, and the smaller the interval is, the smaller the A0 is; in the connected state, the first fixing ring 901 is self-checked for the working condition of the internal strain gauge, the data monitoring unit compares the absolute value of the difference between the first position stress f1 and the second position stress f2 with the standard positive difference value a0,
if | f1-f2| > A0, judging that the position strain gauge has a fault, if | f1-f2| < A0, continuing to the next step, comparing the absolute value of the difference between the second position stress f2 and the third position stress f3 with a standard positive difference value A0,
if | f2-f3| > A0, judging that the position strain gauge fails, if | f2-f3| < A0, continuing the next step, and so on, and comparing the stress of all positions in the fixed ring.
If the number of the strain gauges which have faults after the self-checking is finished exceeds a preset proportion K0, the data provided by the strain gauges in the fixing ring is judged to be invalid, the data monitoring unit does not detect the stress data in the area any more, and a voice warning prompt is sent to prompt that the stress borne by the fixing ring cannot be detected.
Specifically, the data processing unit is configured to receive data matrix information sent by the data monitoring unit, determine whether the connector fixing ring is overloaded according to a stress function in the real-time data matrix P (a1, a2, A3, a4, a5), and monitor whether the connector fails; a data processing matrix F (A10, A20, A30, A40 and A50) is arranged in the data processing matrix, wherein A10 represents a first fixing ring preset stress function, A20 represents a second fixing ring preset stress function, A30 represents a third fixing ring preset stress function, A40 represents a fourth fixing ring preset stress function, and A50 represents a fifth fixing ring preset stress function; preset stress bearing ranges F1, F2, F3, F4, and F5, where F1 represents a first retaining ring preset stress, F2 represents a second retaining ring preset stress bearing range, F3 represents a third retaining ring preset stress bearing range, F4 represents a fourth retaining ring preset stress bearing range, and F5 represents a fifth retaining ring preset stress bearing range.
The data processing unit detects the fixing rings according to a preset processing sequence when processing data, in the steel finger-joint connecting piece of the embodiment, the first fixing ring and the fifth fixing ring are stressed most and mainly have a fixing function, so that whether the first fixing ring is overloaded or not is judged firstly,
in the first fixing ring, the stress value of each position in the stress function a1(F1, f2... fm) of the first fixing ring is compared with the absolute value of the difference value of the stress value of each position in the preset a10(F10, F20.. fm0) of the first fixing ring with a preset stress range F1, and whether the first fixing ring is overloaded or not is judged.
If the first position stress value F1 is greater than the preset first position stress value F10 and | F1-F10| > F1, the position is overloaded, and so on, the stress value of each position is compared with the corresponding preset stress value and whether the position is overloaded is judged, if the number of the overloaded stress positions is greater than the total number m of the stress positions, the fixed ring is judged to be overloaded by the first fixed ring, at the moment, the overload warning of the connecting piece is directly sent out, and the detection is stopped,
if the first position stress value f1 is smaller than the predetermined first position stress value f10, f1< f10, it is determined that the position is not overloaded, and then, in this way, it is determined whether the fifth retaining ring is overloaded,
if the fifth fixing ring is overloaded, directly sending out an overload alarm of the connecting piece, stopping detection, and if the fifth fixing ring is not overloaded, detecting the second fixing ring;
if the second fixing ring is overloaded, recording overload information, and continuing to detect the fourth fixing ring, and if the second fixing ring is not overloaded, detecting the fourth fixing ring;
if the fourth fixing ring is overloaded, sending out an overload alarm of the connecting piece, and stopping detection; if the fourth fixing ring is not overloaded, the third fixing ring is continuously detected,
and if the third fixing ring is overloaded, sending an overload alarm to finish detection.
Specifically, the data processing unit is internally provided with a preset deformation stress difference f0, and when the connection is judged to be successful, the time corresponding real-time data matrix P (a1, a2, A3, a4, A5) is recorded as an initial data matrix P0(G1, G2, G3, G4, G5), wherein G1 represents a first anchor ring initial stress function G1(gf1, gf2.. gfm), G2 represents a second anchor ring initial stress function G2(gf1, gf2.. gfm), G3 represents a third anchor ring initial stress function G3(gf1, gf2.. gfm), G4 represents a fourth anchor ring initial stress function G4(gf1, gf2.. gfm), and G5 represents a fifth anchor ring initial stress function G5(gf1, gf2.. gfm); and continues to receive information sent by the data processing unit.
In the first fixing ring, comparing the difference value of the stress value of each position in the initial stress function G1(gf1, gf2.. gfm) of the first fixing ring and the stress value of each position in the real-time stress function p1(f1, f2... fm) of the first fixing ring with a preset fracture stress range D, judging whether the fixing ring is fractured or not,
in the first fixing ring, the first fixing ring is provided with a first fixing ring,
if | f1-gf1| < D, continuing to detect the next position, and if | f1-gf1| > D, judging that the stress change of the first position exceeds the fracture range;
if | f2-gf1| < D, continuing to monitor the next position, and if | f2-gf1| > D, judging that the stress change of the first position exceeds the fracture range; and in the same way, detecting whether the stress of all the positions exceeds the fracture range, and if the stress change of more than half of the positions exceeds the fracture range, indicating that the fixing ring is fractured or seriously deformed. Correspondingly, whether all the fixing rings are broken or seriously deformed is detected in real time by the method.
Specifically, when the steel finger joint connecting piece is used, if the lower surface of the bottom plate 8 of the female finger joint piece 2 is welded with a column, the upper surface 10 of the sub finger joint piece 3 is welded with square steel, the female finger joint piece 2 and the sub finger joint piece 3 are spliced, and then the tenon wedge body 3 is inserted into the fixing ring to be knocked and fixed, so that the connection is completed, and the column-beam connecting piece is formed.
Specifically, the steel finger joint connecting piece can be made of cast iron, alloy steel, novel composite materials and other common metals, and the selected material can meet the engineering stress requirements of actual conditions.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The utility model provides a steel indicates to connect connecting piece which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the sub-finger joint piece is welded with the stand column and connected with the sub-finger joint piece through a tenon wedge body and comprises a fixing ring, the fixing ring is arranged on the inner side of a positioning baffle of the sub-finger joint piece, a preset interval is formed among the fixing rings, the fixing ring is a concave structure with an opening facing a bottom plate, the inner surface of the fixing ring is provided with a plurality of strain gauges for detecting stress applied to each part of the fixing ring after the tenon wedge body is inserted, and the fixing ring is provided with a preset length, a preset width and a preset height for enabling the tenon wedge body to penetrate through and fixing the tenon wedge body;
the female finger joint piece is used for being welded with square steel and is connected with the male finger joint piece through a tenon wedge body, the female finger joint piece comprises a fixing ring, the fixing ring is arranged on the inner side of a positioning baffle of the female finger joint piece, preset intervals are formed among the fixing rings, the fixing ring is of a concave structure with an opening facing a bottom plate, the inner surface of the fixing ring is provided with a plurality of strain gauges for detecting stress applied to each part of the fixing ring after the tenon wedge body is inserted, and the fixing ring is provided with preset length, width and height for enabling the tenon wedge body to penetrate through and fixing the tenon wedge body;
the tenon wedge body is used for connecting the fixed sub-finger joint piece and the fixed main finger joint piece and comprises a positioning plate and a fixed body; the tenon-wedge body positioning baffle is of a rectangular plate-shaped structure, the height of the tenon-wedge body positioning baffle is preset, the width of the tenon-wedge body positioning baffle is the same as that of the primary finger joint positioning baffle, the tenon-wedge body positioning baffle is used for limiting the insertion depth of the tenon-wedge body, the tenon-wedge body fixing body is of an I-shaped structure, a concave structure and a rectangular structure, the length of the tenon-wedge body fixing body is a preset length, the width of the cross section of the tenon-wedge body fixing body is a preset size, and the fixing block is used for connecting the;
the data monitoring unit is used for being connected with the strain gauges in the fixing rings and monitoring the strain values of the strain gauges of the fixing rings in real time, a real-time data matrix P (A1, A2, A3, A4 and A5) is arranged in the data monitoring unit, wherein A1 represents a stress function of the first fixing ring, A2 represents a stress function of the second fixing ring, A3 represents a stress function of the third fixing ring, A4 represents a stress function of the fourth fixing ring, A5 represents a stress function of the fifth fixing ring, and the data monitoring unit continuously monitors the stress function data of the strain gauges in the fixing rings and continuously records the stress function data into the real-time data matrix P (A1, A2, A3, A4 and A5);
the data processing unit is used for receiving a real-time data matrix P (A1, A2, A3, A4 and A5) sent by the data monitoring unit, comparing the difference value of the internal stress function of each fixing ring with a preset stress function with a preset stress bearing range, judging whether the fixing ring of the connecting piece is overloaded or not, and monitoring whether the connecting piece is broken or seriously deformed or not; a data processing matrix F (A10, A20, A30, A40 and A50) is arranged in the data processing matrix, wherein A10 represents a first fixing ring preset stress function, A20 represents a second fixing ring preset stress function, A30 represents a third fixing ring preset stress function, A40 represents a fourth fixing ring preset stress function, and A50 represents a fifth fixing ring preset stress function; the data processing unit is preset with stress bearing ranges of F1, F2, F3, F4 and F5, wherein F1 represents a first fixing ring preset stress, F2 represents a second fixing ring preset stress bearing range, F3 represents a third fixing ring preset stress bearing range, F4 represents a fourth fixing ring preset stress bearing range, and F5 represents a fifth fixing ring preset stress bearing range.
2. The steel finger-joint connector according to claim 1, wherein the female finger-joint member further comprises a bottom plate and a positioning baffle, wherein the bottom plate is a rectangular plate-shaped structure with a predetermined length and a predetermined width, the positioning baffle is arranged along the long side and the wide side of the rectangle on the upper surface of the bottom plate, the positioning baffle is arranged at a position away from the long side and the wide side of the bottom plate by a predetermined width, and the positioning baffle is a rectangular plate-shaped structure with a predetermined height and a predetermined width and is used for matching with the male finger-joint member to position the male finger-joint member.
3. The steel finger-joint connector according to claim 1, further comprising a bottom plate and a positioning baffle, wherein the bottom plate is a rectangular plate-shaped structure with a preset length and a preset width, the positioning baffle is arranged along the rectangular long edge of the lower surface of the bottom plate, and the positioning baffle is a rectangular plate-shaped structure with a preset height and a preset width which are the same as those of the positioning baffle of the female finger-joint connector.
4. The steel finger joint connection according to claim 1, wherein the strain gauge is disposed in the inner surface of the fixing ring, M positions are taken on the inner surface of the fixing ring, the strain at the M positions is obtained by strain gauge detection and recorded as a stress function, and correspondingly, the strain gauge stress data obtained in the first fixing ring by the data monitoring unit is recorded as a first fixing ring stress function a1(f1, f2 … … fm), wherein f1 represents the stress at the first position, and fm represents the stress at the M-th position; and the rest of the fixed ring stress functions A2, A3, A4 and A5 are obtained by analogy.
5. The steel finger joint connector according to claim 1, wherein the data monitoring unit has a self-checking function, and a standard positive difference value A0 is arranged in the data monitoring unit, wherein the standard positive difference value A0 is related to the interval of the strain gauge, and the smaller the interval, the smaller A0; in a connection state, the working condition of the internal strain gauge of the first fixing ring is self-checked, and the absolute value obtained by the difference between the first position stress f1 and the second position stress f2 is compared with a standard positive difference value A0 by the data monitoring unit.
6. The steel finger joint connection according to claim 5, wherein the data detection unit self-checking method comprises,
if | f1-f2| > A0, judging that the position strain gauge has a fault, if | f1-f2| < A0, continuing to the next step, comparing the absolute value of the difference between the second position stress f2 and the third position stress f3 with a standard positive difference value A0,
if | f2-f3| > A0, judging that the strain gauge at the position has a fault, if | f2-f3| < A0, continuing the next step, and so on, and comparing the stress at all positions in the fixed ring;
if the number of the strain gauges with faults after the self-checking is finished exceeds a preset proportion K0, the data provided by the strain gauges in the fixing ring is judged to be invalid, and the data monitoring unit does not detect the stress data in the area any more.
7. The steel finger joint connector according to claim 1, wherein the data processing unit detects the fixing rings according to a predetermined processing sequence when processing data, first determines whether the first fixing ring is overloaded,
in the first fixing ring, comparing the stress value of each position in the stress function A1(F1, f2... fm) of the first fixing ring with the absolute value of the difference value of the stress value of each position in the preset A10(F10, F20.. fm0) of the first fixing ring with a preset stress range F1, and judging whether the first fixing ring is overloaded or not;
if the first position stress value F1 is greater than the preset first position stress value F10 and | F1-F10| > F1, indicating that the position is overloaded, and so on, comparing the stress value of each position with the corresponding preset stress value and judging whether the position is overloaded, if the number of the overloaded stress positions is greater than the total number m of the stress positions, judging that the fixed ring is overloaded by the first fixed ring, and at the moment, directly sending out a connecting piece overload warning and stopping detection;
if the first position stress value f1 is smaller than the predetermined first position stress value f10, f1< f10, it is determined that the position is not overloaded, and then, in this way, it is determined whether the fifth retaining ring is overloaded,
if the fifth fixing ring is overloaded, directly sending out an overload alarm of the connecting piece, stopping detection, and if the fifth fixing ring is not overloaded, detecting the second fixing ring;
if the second fixing ring is overloaded, recording overload information, and continuing to detect the fourth fixing ring, and if the second fixing ring is not overloaded, detecting the fourth fixing ring;
if the fourth fixing ring is overloaded, sending out an overload alarm of the connecting piece, and stopping detection; if the fourth fixing ring is not overloaded, the third fixing ring is continuously detected;
and if the third fixing ring is overloaded, sending an overload alarm to finish detection.
8. The steel finger joint connection according to claim 1, wherein the data processing unit is internally provided with a preset deformation stress difference f0, and when overload detection is completed, the time corresponding to the real-time data matrix P (a1, a2, A3) is recorded as an initial data matrix P3 (G3, G3), wherein G3 represents a first fixing ring initial stress function G3(gf 3, gf2.. 3), G3 represents a second fixing ring initial stress function G3(gf 3, gf2.. 3), G3 represents a third fixing ring initial stress function G3(gf 3, gf2.. 3), G3 represents a fourth fixing ring initial stress function G3 (G3, gf2.. 3), and G3 represents a fifth fixing ring initial stress function G3, gf2.. 3, G3.. 3); the data processing unit continues to receive information sent by the data processing unit and detects whether the fixing ring is broken or seriously deformed when the steel finger joint connecting piece works.
9. The steel finger joint connection according to claim 8, wherein the data processing unit first compares the difference between the stress value at each position in the initial stress function G1(gf1, gf2.. gfm) of the first fastening ring and the stress value at each position in the real-time stress function p1(f1, f2... fm) of the first fastening ring with a preset fracture stress range D to determine whether the fastening ring is fractured.
10. The steel finger joint connection according to claim 9, wherein when the data processing compares stress within the first retaining ring,
if | f1-gf1| < D, continuing to detect the next position, and if | f1-gf1| > D, judging that the stress change of the first position exceeds the fracture range;
if | f2-gf1| < D, continuing to monitor the next position, and if | f2-gf1| > D, judging that the stress change of the first position exceeds the fracture range; and in the same way, detecting whether the stress of all the positions exceeds the fracture range, and if the stress change of more than half of the positions exceeds the fracture range, indicating that the fixing ring is fractured or seriously deformed. Correspondingly, whether all the fixing rings are broken or seriously deformed is detected in real time by the method.
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| CN2189231Y (en) * | 1994-01-11 | 1995-02-08 | 宋本体 | Structure for jointing top and legs of table |
| US20050271852A1 (en) * | 2004-06-04 | 2005-12-08 | Solomon Gregory J | Panel apparatus with supported connection |
| CN201475099U (en) * | 2009-07-25 | 2010-05-19 | 张平定 | Buckle device |
| CN104533905A (en) * | 2014-11-21 | 2015-04-22 | 苏州市吴中区光福姑苏明御阁红木家具厂 | Wedged nail tenon applied to furniture |
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2020
- 2020-07-14 CN CN202010674879.3A patent/CN111779736B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2189231Y (en) * | 1994-01-11 | 1995-02-08 | 宋本体 | Structure for jointing top and legs of table |
| US20050271852A1 (en) * | 2004-06-04 | 2005-12-08 | Solomon Gregory J | Panel apparatus with supported connection |
| CN201475099U (en) * | 2009-07-25 | 2010-05-19 | 张平定 | Buckle device |
| CN104533905A (en) * | 2014-11-21 | 2015-04-22 | 苏州市吴中区光福姑苏明御阁红木家具厂 | Wedged nail tenon applied to furniture |
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