CN116499856B - Reinforcing steel bar bending performance detection device and detection method - Google Patents
Reinforcing steel bar bending performance detection device and detection method Download PDFInfo
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- CN116499856B CN116499856B CN202310150574.6A CN202310150574A CN116499856B CN 116499856 B CN116499856 B CN 116499856B CN 202310150574 A CN202310150574 A CN 202310150574A CN 116499856 B CN116499856 B CN 116499856B
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- 238000005452 bending Methods 0.000 title claims abstract description 69
- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 40
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 28
- 238000012360 testing method Methods 0.000 abstract description 17
- 230000009471 action Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a device and a method for detecting bending performance of a steel bar, and the technical scheme is as follows: the device comprises two groups of support assemblies for clamping the steel bars, wherein pressure devices are arranged at the upper side and the lower side between the two groups of support assemblies, and the two groups of pressure devices are respectively used for pressing the steel bars at the upper side and the lower side to realize bending; the support assembly comprises a rotating seat, a supporting seat and a sliding assembly, the rotating seat is rotationally connected to the frame through a supporting shaft, the supporting seat is fixed on the rotating seat, and the sliding assembly is slidably connected to the supporting seat and can slide along the directions of the two groups of support assemblies; the sliding assembly is internally provided with a limiting groove for accommodating the reinforcing steel bars, and clamping wheel sets are arranged on two sides of the limiting groove and used for clamping the reinforcing steel bars. The invention can realize stable clamping of the steel bar, improve the stability in the process of detecting the bending of the steel bar and effectively and reliably test the bending of the steel bar.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a device for detecting bending performance of a steel bar, and also relates to a method for detecting the bending performance of the steel bar.
Background
For part of strength parameters of the reinforcing steel bars, bending pressure strength in the bending process is detected by bending the reinforcing steel bars, and the corresponding strength parameters of the reinforcing steel bars can be obtained. In the bending detection process of the steel bar, the bending detection can be generally carried out according to the current common forward and reverse bending test method of the steel bar by bending the steel bar, the bending angle of the steel bar is generally bent by 90 degrees, and then the steel bar is bent by 20 degrees reversely, so that the bending test of the steel bar can be realized. In addition, the bending angle of the steel bar can be adjusted according to different testing conditions, and the strength parameters of different bending angles of the steel bar can be tested.
The reinforcing bar supports through the supporting component of both sides in the experimental in-process of buckling, generally only through seting up a set of spacing groove in the middle of the supporting component, spacing groove can carry out the holding spacing to the reinforcing bar, and then can carry out spacingly to the reinforcing bar in the reinforcing bar buckling process. Moreover, the reinforcing bar will produce certain lateral movement trend in the bending process for the reinforcing bar is under by the centre gripping state, probably produces unstable condition, holds spacingly through the spacing groove only, leads to the reinforcing bar clamping to produce the skew fluctuation condition easily, is unfavorable for the reinforcing bar bending test.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
The invention aims to solve the problems and provide the steel bar bending performance detection device which can realize stable clamping of the steel bars, improve the stability in the steel bar bending detection process and effectively and reliably bend the steel bars.
The technical aim of the invention is realized by the following technical scheme: the device comprises two groups of support assemblies for clamping the steel bars, wherein pressure devices are arranged at the upper side and the lower side of the two groups of support assemblies, and the two groups of pressure devices are respectively used for pressing the steel bars at the upper side and the lower side to realize bending; the support assembly comprises a rotating seat, a supporting seat and a sliding assembly, the rotating seat is rotationally connected to the frame through a supporting shaft, the supporting seat is fixed on the rotating seat, and the sliding assembly is slidably connected to the supporting seat and can slide along the directions of the two groups of support assemblies; the sliding assembly is internally provided with a limiting groove for accommodating the reinforcing steel bars, and clamping wheel sets are arranged on two sides of the limiting groove and used for clamping the reinforcing steel bars.
The sliding assembly comprises a supporting plate, wherein a first supporting block and a second supporting block are arranged on the supporting plate, and a limiting groove for accommodating reinforcing steel bars is formed between the first supporting block and the second supporting block; two assembly clamping wheel sets are arranged on the first supporting block, and one assembly clamping wheel set is arranged on the second supporting block.
The invention is further characterized in that the first supporting block and the second supporting block are respectively provided with a wheel groove for accommodating the clamping wheel set, and the wheel grooves are opened towards the inner side direction of the limiting grooves and used for extending the periphery of the clamping wheel set into the limiting grooves.
The invention further provides that the clamping wheel set comprises a wheel body and an eccentric sleeve, wherein the wheel body is rotatably supported by a wheel shaft, the periphery of the wheel body is provided with the eccentric sleeve, one side of the eccentric sleeve is a small-diameter part, and the other side of the eccentric sleeve is a large-diameter part; the wheel body realizes unidirectional rotation through a linkage mechanism.
The invention is further characterized in that the periphery of the eccentric sleeve is provided with a ring groove, and the inner side of the ring groove is provided with an arc-shaped concave.
The invention is further provided that a linkage cavity is formed on one side of the wheel body facing the opening of the limit groove, a first linkage block and a second linkage block are arranged in the linkage cavity, and the first linkage block and the second linkage block are abutted against each other at the end surfaces and can realize unidirectional transmission; the first linkage block is linked with the inner periphery of the wheel body and can realize synchronous rotation; the two linkage blocks are supported by the supporting sleeve and keep axially rotating and fixing.
The invention is further arranged that the linkage mechanism comprises a first ratchet and a second ratchet, wherein the first ratchet is fixed on the end face of the first linkage block, and the second ratchet is fixed on the end face of the second linkage block and distributed in an annular structure; the first ratchet is opposite to the second ratchet, and unidirectional ratchet linkage can be realized.
The invention is further arranged that the first ratchet comprises a first plane and a first inclined plane, the second ratchet comprises a second plane and a second inclined plane, and the first plane is propped against the second plane and is used for realizing unidirectional propping transmission; the inclined plane I and the inclined plane II are mutually propped and used for realizing relative rotation through slipping.
The invention is further characterized in that a second limiting block is fixed on the periphery of the first linkage block, a second limiting groove is formed in the inner periphery of the linkage cavity, the second limiting groove is axially arranged, and the second limiting block is slidably connected in the second limiting groove and can realize axial sliding limiting; a second spring is elastically pressed between the inner side end surface of the linkage cavity and the second limiting block; and a second accommodating groove for accommodating the spring is formed in the inner side end surface of the linkage cavity.
The invention is further arranged that a limiting shaft is connected in a sliding way in the supporting sleeve, one end of the limiting shaft extends into the linkage cavity and is fixedly connected with the second linkage block, and the other end of the limiting shaft extends to the outer side of the supporting block; a first spring is elastically pressed between the first linkage block and the second linkage block, and a first accommodating groove for accommodating the spring is formed in the first linkage block and the second linkage block.
The invention is further arranged that the first limiting block is fixed on the periphery of the limiting shaft, the first limiting groove is formed in the inner periphery of the supporting sleeve, and the first limiting block is connected in the first limiting groove in a sliding mode and can realize axial sliding adjustment.
The invention is further arranged that the outer sides of the first supporting block and the second supporting block are provided with baffle rods, and the baffle rods are arranged at the openings of the limiting grooves and used for blocking the reinforcing steel bars; one end of the baffle rod is fixedly connected to the first supporting block or the second supporting block and is fixed through a bolt; the blocking rod is used for propping against the outer end of the limiting shaft and pushing the first linkage block and the second linkage block to mutually prop against and press the ratchet to realize linkage.
The invention also discloses a method for detecting the bending performance of the steel bar, and the bending test of the steel bar can be realized by adopting the detection device. In the detection process, firstly, reinforcing steel bars are embedded into supporting components at two sides and are installed in a limiting groove, limiting of the reinforcing steel bars can be achieved through the limiting groove, and the reinforcing steel bars are fixed by clamping wheel groups at two sides; then, the pressing rod and the pressing block are driven by the upper pressure device to generate downward pressure, and the steel bar is bent until 90 degrees are formed by bending the steel bar; meanwhile, the pressure of the pressure device in the pressing process is detected, and bending test detection is achieved. In the bending process, the angle sensor is used for detecting the bending angle condition, and the sum of the rotation angles of the two support shafts reaches 90 degrees.
Resetting the upper pressure device, driving the lower pressure device to press the rod and the pressing block to generate upward pressure; and bending the reinforcing steel bar upwards until the reinforcing steel bar is bent to a required bending angle. Meanwhile, the pressure device is used for detecting the pressure in the upward pressing process, so that the bending test detection is realized.
In summary, the invention has the following beneficial effects:
among the supporting components, through slip subassembly sliding connection on the supporting seat to can follow two sets of supporting component directions and slide, in the action process is buckled to the reinforcing bar, make slip subassembly can adapt to the mutual microslip of reinforcing bar, and then can realize the smooth and easy action of buckling of reinforcing bar, and then can realize buckling test smoothly to the reinforcing bar.
Through installing multiunit clamping wheelset in the middle of the supporting component, the clamping wheelset will produce with the periphery of reinforcing bar and support the pressure friction, in horizontal slip in-process, the reinforcing bar produces certain friction with clamping wheelset, drives clamping wheelset and produces to roll, and then makes clamping wheelset produce eccentric rotation. Through the eccentric rotation adjustment of the clamping wheelset, one side of the clamping wheelset, which is close to the large-diameter part, can enter the limiting groove more oppositely, and can be pressed against the reinforcing steel bar more stably, so that the clamping strength of the reinforcing steel bar is improved, and the stable state of the reinforcing steel bar is maintained. And the periphery of the eccentric sleeve is provided with a ring groove, the inner side of the ring groove is provided with an arc-shaped recess, and when the steel bar is embedded into the ring groove, a stable clamping state can be formed, so that the clamping stability of the steel bar in the test process is maintained.
Drawings
Fig. 1 is a schematic structural diagram of a device for detecting bending performance of a steel bar according to the present invention;
fig. 2 is a schematic structural diagram of a device for detecting bending performance of a steel bar according to the present invention;
fig. 3 is a schematic structural diagram of a device for detecting bending performance of a steel bar according to the present invention;
FIG. 4 is a perspective view of a slide assembly according to the present invention;
FIG. 5 is a schematic view of a sliding assembly according to the present invention;
FIG. 6 is a second perspective view of the sliding assembly of the present invention;
FIG. 7 is a schematic view of a clamping wheel set and a sliding assembly according to the present invention;
fig. 8 is a schematic structural view of a sliding assembly and a reinforcing steel bar according to the present invention;
FIG. 9 is a schematic structural view of a clamping assembly of the present invention;
FIG. 10 is a schematic view of the internal structure of the linkage chamber of the present invention;
FIG. 11 is a schematic diagram of a linkage mechanism according to the present invention;
FIG. 12 is a second schematic structural view of the linkage mechanism of the present invention;
reference numerals: 1. a support shaft; 2. a support assembly; 21. a rotating seat; 22. a support base; 23. a sliding assembly; 3. a pressure device; 31. a compression bar; 32. briquetting; 5. reinforcing steel bars; 6. a support plate; 61. a first supporting block; 62. a second supporting block; 63. a limit groove; 631. a cushion block; 64. wheel grooves; 7. clamping the wheel set; 71. a ring groove; 72. a limiting shaft; 73. a wheel body; 74. an eccentric sleeve; 741. a small diameter portion; 742. a large diameter portion; 75. a wheel axle; 76. a linkage cavity; 77. a support sleeve; 78. a first limit groove; 79. a first limiting block; 710. a first linkage block; 711. a second linkage block; 712. a limiting groove II; 713. a second limiting block; 714. a first spring; 715. the first accommodating groove is formed; 716. a second spring; 717. the accommodating groove II; 8. a linkage mechanism; 81. a first ratchet; 811. plane one; 812. an inclined plane I; 82. a second ratchet; 821. plane two; 822. a second inclined plane; 9. a gear lever; 91. a bolt; 92. and (5) pressing the surface.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment discloses a steel bar bending performance detection device, as shown in fig. 1-3, including two sets of supporting components 2 and an upper pressure device 3, a lower pressure device 3 to realize supporting through the frame, can realize buckling detection to steel bar 5.
The two groups of support assemblies 2 can clamp the steel bars 5, the pressure devices 3 are arranged at the upper two sides of the middle positions of the two groups of support assemblies 2, and the pressing bending action can be performed through the pressure devices 3. The pressure device 3 comprises a driving power piece, a pressing rod 31 and a pressing block 32, wherein the power piece is a hydraulic cylinder and can play a role in bending and pushing; the output at the power spare is installed to depression bar 31, and briquetting 32 is fixed in the tip position of depression bar 31 to briquetting 32 is the arc structure towards one side of reinforcing bar 5, and the condition of buckling that can be applicable to reinforcing bar 5 realizes the bending test.
In order to maintain the pressing stability of the pressing block 32 on the steel bar 5, an arc-shaped groove can be formed on the surface of the pressing block 32 facing the steel bar 5, so as to maintain the stability of the bending process of the steel bar 5.
The support assembly 2 comprises a rotating seat 21, a supporting seat 22 and a sliding assembly 23, wherein the rotating seat 21 is rotatably connected to the frame through a supporting shaft 1, the supporting seat 22 is fixedly installed on the rotating seat 21 to form a support, and can realize a rotating action, so that the support assembly can adapt to the bending action of the reinforcing steel bars 5, and is in a state shown in fig. 1-3. The sliding component 23 is slidably connected to the supporting seat 22 and can slide along the two groups of supporting components 2, so that the sliding component 23 can adapt to the mutual micro-sliding of the reinforcing steel bars 5 in the bending action process of the reinforcing steel bars 5, and further the smooth bending action of the reinforcing steel bars 5 can be realized.
In the clamping process, the steel bar 5 is clamped on the sliding component 23, the sliding component 23 is provided with the limiting groove 63, and the width of the limiting groove 63 is slightly larger than that of the steel bar 5, so that the steel bar 5 can be smoothly installed and embedded into the limiting groove 63, and stable limiting support of the steel bar 5 can be realized. And, be provided with clamping wheelset 7 in the both sides of spacing groove 63, clamping wheelset 7 forms the three-point clamping in the both sides of reinforcing bar 5, can realize the steady clamping to reinforcing bar 5.
The embodiment discloses a method for detecting bending performance of a steel bar, and the adoption of the detection device can realize bending test of the steel bar 5. In the detection process, firstly, the steel bars 5 are embedded into the supporting components 2 at the two sides and are installed in the limiting grooves 63, the limiting of the steel bars 5 can be realized through the limiting grooves 63, and the steel bars 5 are fixed by the clamping wheel groups 7 at the two sides; then, the pressing rod 31 and the pressing block 32 are driven by the upper pressure device 3 to generate downward pressure, and the steel bar 5 is bent until the steel bar 5 is bent to form 90 degrees; meanwhile, the pressure device 3 is used for detecting the pressure in the pressing process, so that the bending test detection is realized. In the bending process, the angle condition of bending is detected by an angle sensor, and the sum of the rotation angles of the two support shafts 1 reaches 90 degrees.
Then, resetting the upper pressure device 3, and driving the lower pressure device 3 to drive the compression bar 31 and the pressing block 32 to generate upward pressure; the reinforcing steel bar 5 is bent upwards until the reinforcing steel bar 5 is bent to a required bending angle. Meanwhile, the pressure device 3 is used for detecting the pressure in the upward pressing process, so that the bending test detection is realized.
Further, this embodiment also discloses another method for detecting the bending performance of the steel bar, which can improve the device for detecting the bending performance of the steel bar, and optimally design the sliding component 23, and will be described in detail with reference to fig. 4-12.
As shown in fig. 4 to 8, the sliding assembly 23 includes a support plate 6, and a first support block 61 and a second support block 62 are fixed on the support plate 6 by using the support plate 6 as a support, the first support block 61 is located at one side, the second support block 62 is located at the other side, and a limit groove 63 is formed between the first support block 61 and the second support block 62. The width of the limit groove 63 is mutually matched with the width of the steel bar 5, and the width is slightly larger than the steel bar 5, so that the steel bar 5 can be smoothly embedded.
Two assembly clamping wheel sets 7 are arranged on the first support block 61, namely positioned at the lower side of the limiting groove 63; the second supporting block 62 is provided with an assembling clamping wheel set 7, i.e. located at the upper side of the limiting groove 63. Wheel grooves 64 are formed in the first support block 61 and the second support block 62, and the wheel grooves 64 are mutually matched with the clamping wheel sets 7 and are used for accommodating the clamping wheel sets 7. The wheel groove 64 is opened toward the inner side of the limit groove 63. The clamping wheelset 7 can realize eccentric rotation, and in the rotation process, the periphery position of clamping wheelset 7 can stretch into in the spacing groove 63, and then can realize the clamping to reinforcing bar 5.
Because the steel bar 5 can generate a certain sliding motion relative to the supporting seat 22 in the bending process, the adaptive bending change is generated. The clamping wheelset 7 generates pressing friction with the periphery of the steel bar 5, and in the transverse sliding process, the steel bar 5 generates certain friction with the clamping wheelset 7, and drives the clamping wheelset 7 to roll, so that the clamping wheelset 7 generates eccentric rotation. In the rotation process, the larger part on the eccentric side of the clamping wheel set 7 enters the limit groove 63, so that the steel bar 5 can be pressed more stably, the clamping strength of the steel bar 5 is further improved, and the stable state of the steel bar 5 is maintained.
In order to improve the clamping stability of the clamping wheelset 7 to the steel bar 5, an annular groove 71 can be formed in the periphery of the eccentric sleeve 74, an arc-shaped recess is formed in the inner side of the annular groove 71, and after the steel bar 5 is embedded into the annular groove 71, a stable clamping state can be formed, so that the clamping stability of the steel bar 5 in the test process is maintained.
As shown in fig. 9, the clamping wheel set 7 comprises a wheel body 73 and an eccentric sleeve 74, wherein the wheel body 73 is rotatably supported by a wheel shaft 75, and the clamping wheel set 7 is rotatably arranged in the wheel groove 64; an eccentric sleeve 74 is fitted over the outer periphery of the wheel 73, and the eccentric sleeve 74 is fixed to the outer periphery of the wheel 73. The eccentric sleeve 74 is eccentric, one side of the eccentric sleeve 74 is a small diameter part 741, the other side is a large diameter part 742, namely, the distance from the periphery of the side of the small diameter part 741 to the center position of the wheel shaft 75 is smaller, the distance from the periphery of the side of the large diameter part 742 to the center position of the wheel shaft 75 is larger, during rotation, the position extending into the limit groove 63 rotates from the small diameter part 741 to the large diameter part 742, and further, a larger part is embedded into the limit groove 63, and the large diameter part 742 can realize more stable clamping of the steel bar 5.
The linkage mechanism 8 is installed in the linkage cavity 76 of the wheel body 73, and unidirectional rotation is realized through the linkage mechanism 8. Through the mutual cooperation of the linkage mechanisms 8 at the two sides, eccentric linkage actions are generated on the eccentric sleeve 74 no matter the steel bar 5 moves along the left side and the right side, and therefore stable clamping of the steel bar 5 can be realized in two directions.
As shown in fig. 8, the linkage 8 in the clamping wheel set 7 can rotate counterclockwise, but cannot rotate clockwise. When the steel bar 5 moves transversely, the steel bar 5 rubs against the eccentric sleeve 74 on the periphery of the clamping wheel set 7, the steel bar 5 moves rightwards, and the steel bar moves against the periphery of the clamping wheel set 7. The clamping wheel sets 7 at the lower side of the limiting groove 63 cannot rotate clockwise, and the two clamping wheel sets 7 at the lower side can generate stable pressing support at the lower side of the steel bar 5. The clamping wheelset 7 of spacing groove 63 upside receives the friction drive of reinforcing bar 5, and clamping wheelset 7 will produce anticlockwise, and rotatory in-process, one side of the big footpath portion 742 of eccentric sleeve 74 is rotatory towards the inboard direction of spacing groove 63, and big footpath portion 742 can produce bigger pressure to reinforcing bar 5, and then can play to produce more stable pressure equipment action to reinforcing bar 5, keeps the stability of reinforcing bar 5.
As shown in fig. 9, a linkage cavity 76 is formed on one side of the wheel body 73, which is open to the limit groove 63, and a first linkage block 710 and a second linkage block 711 are arranged in the linkage cavity 76, and the end surfaces of the first linkage block 710 and the second linkage block 711 are abutted against each other to realize unidirectional transmission. The first linkage block 710 and the second linkage block 711 are provided with ratchets, and unidirectional ratchet linkage is realized through the ratchets.
The first linkage block 710 is linked with the inner periphery of the wheel body 73 and can realize synchronous rotation; and the second linkage block 711 is supported by the support sleeve 77 and is kept axially and rotationally fixed, so that the first linkage block 710 can be in linkage fit by the second linkage block 711, and the clamping wheel set 7 can be in linkage.
As shown in fig. 11 and 12, the linkage mechanism 8 includes a first ratchet 81 and a second ratchet 82, the first ratchet 81 is fixed on the end surface of the first linkage block 710, and the second ratchet 82 is fixed on the end surface of the second linkage block 711 and is distributed in a ring structure. The first ratchet 81 is opposite to the second ratchet 82, and unidirectional ratchet linkage can be realized. Specifically, the first ratchet 81 includes a first flat 811 and a first inclined surface 812, and the second ratchet 82 includes a second flat 821 and a second inclined surface 822. When the clamping wheel set 7 rotates reversely, the first plane 811 is propped against the second plane 821 to realize unidirectional propping transmission, so that stable clamping of the steel bars 5 can be formed; when the clamping wheelset 7 rotates in the forward direction, the inclined plane I812 and the inclined plane II 822 are mutually propped against each other, and relative rotation can be realized by slipping under the action of mutual wires between the inclined plane I812 and the inclined plane II 822, so that the clamping wheelset 7 can rotate, and the reinforcing steel bars 5 can be stably clamped.
To maintain the axial rotational linkage between the first linkage block 710 and the wheel 73, the first linkage block 710 is maintained in synchronous rotation with the wheel 73. As shown in fig. 9 and 10, a second limiting block 713 may be fixed on the outer periphery of the first linkage block 710, and a second limiting groove 712 is formed on the inner periphery of the linkage cavity 76, where the second limiting groove 712 is in an axial direction; the second limiting block 713 is embedded into the second limiting groove 712 and is in sliding connection with the second limiting groove 712, so that axial sliding guide can be realized; and, through the structure action of axial sliding, the support of the first linkage block 710 can be realized.
A second spring 716 is elastically pressed between the inner side end surface of the linkage cavity 76 and the second limiting block 713, a second accommodating groove 717 is formed in the inner side end surface of the linkage cavity 76, the second spring 716 can be supported and limited through the second accommodating groove 717, and the second limiting block 713 is kept to float up and down to a certain extent. Through the upward floating of the second limiting block 713, the ratchet mechanism between the first limiting block 79 and the second limiting block 713 can realize unidirectional linkage and unidirectional slip, and further can realize ratchet transmission.
As shown in fig. 9, a support sleeve 77 is fixedly arranged at the position of the first support block 61 and the second support block 62 corresponding to the wheel groove 64, and the support sleeve 77 is coaxially arranged with the corresponding wheel shaft 75. The limiting shaft 72 is arranged in the supporting sleeve 77, and the limiting shaft 72 is in sliding connection with the supporting sleeve 77 and can realize axial sliding adjustment and rotation limiting.
One end of the limiting shaft 72 extends into the linkage cavity 76 and is fixedly connected with the second linkage block 711, so that the second linkage block 711 and the supporting sleeve 77 can be maintained to form axial sliding motion, and the second linkage block 711 can be in an axial rotation fixed state. A first limiting block 79 can be fixed on the periphery of the limiting shaft 72, a first limiting groove 78 is formed in the inner periphery of the supporting sleeve 77, the first limiting block 79 is slidably connected in the first limiting groove 78, and axial sliding adjustment can be realized to form rotary limiting.
The other end of the limiting shaft 72 protrudes to the outside of the supporting block. A first spring 714 is elastically pressed between the first linkage block 710 and the second linkage block 711, and a first accommodating groove 715 is formed in the first linkage block 710 and the second linkage block 711, so that the first spring 714 is accommodated and limited, and elastic support of the first linkage block 710 and the second linkage block 711 is kept.
The end of the limiting shaft 72 extends to the outer side of the supporting block, and the limiting shaft 72 is pressed, so that the first linkage block 710 and the second linkage block 711 can overcome the support of the first spring 714, the first ratchet 81 and the second ratchet 82 between the first linkage block 710 and the second linkage block 711 can be mutually pressed and embedded, a stable pressing state can be generated between the first linkage block 710 and the second linkage block 711, and unidirectional linkage can be realized. The limiting shaft 72 can be provided with a blocking part at the outer side of the corresponding supporting block, and the blocking part can press the limiting shaft 72 to the direction so as to realize the linkage of the ratchet mechanism; the blocking component can be fixed through bolts 91 or other passes, so that the limiting shaft 72 can be pressed or loosened, and the limiting shaft 72 and the linkage mechanism 8 are linked.
Further, as shown in fig. 6, the outside of the first support block 61 and the second support block 62 is provided with a stop lever 9, and the stop lever 9 can block the stop slot 63 at the opening position of the stop slot 63, thereby playing a role in blocking and limiting the reinforcing steel bar 5.
One end of the baffle rod 9 is fixedly connected to the first support block 61 or the second support block 62 and is fixed through a bolt 91; for example, a blocking rod 9 is installed at the middle position of the first supporting block 61, the lower end of the blocking rod 9 is fixed through a bolt 91, and the upper end of the blocking rod 9 extends upwards to the position of the limiting shaft 72 of the second supporting block 62, so that the limiting shaft 72 can be axially pressed, and the ratchet linkage mechanism 8 can realize mutual linkage fit. The two sides of the second supporting block 62 are provided with the baffle rods 9, the upper ends of the baffle rods 9 are fixed through bolts 91, the lower ends of the baffle rods 9 extend downwards to the position of the limiting shafts 72 of the first supporting block 61, the limiting shafts 72 can be axially pressed, the ratchet linkage mechanisms 8 can realize mutual linkage fit, and then the assembly clamping wheel sets 7 are in linkage fit.
The embodiment also discloses a method for detecting the bending performance of the steel bar, which adopts the detection device to detect the bending of the steel bar 5. In the detection process, a specific detection method is adopted, and the detection is carried out by installing the detection method. The concrete clamping method of the reinforcing bar 5 will be described below according to the concrete structure of the sliding assembly 23.
In the process of clamping the reinforcing steel bars 5, the reinforcing steel bars 5 are embedded into the limiting grooves 63 between the first supporting blocks 61 and the second supporting blocks 62, and the upper clamping effect and the lower clamping effect can be achieved on the upper side and the lower side of the reinforcing steel bars 5 through adjusting the clamping wheel sets 7, so that a three-point type upper clamping state and a three-point type lower clamping state are formed. By installing the blocking rod 9 at the outer side positions of the first supporting block 61 and the second supporting block 62, the blocking rod 9 is fixed, the end part of the blocking rod 9 is propped against the limiting shaft 72, and the limiting shaft 72 is pushed to push the first linking block 710 and the second linking block 711 against each other, so that the ratchet mechanisms between the first linking block 710 and the second linking block 711 are in unidirectional linkage with each other. The pressing surface 92 of the gear lever 9 is provided with a notch which is mutually matched with the limiting shaft to limit, so that a stable pressing state can be realized.
Then, through clamping wheelset 7, promote clamping wheelset 7's big footpath portion 742 towards the inboard direction of spacing groove 63 for clamping wheelset 7 periphery and reinforcing bar 5 periphery are pressed each other, form preliminary clamping fixedly.
Then, the bending test is performed on the reinforcing steel bars 5 by the upper and lower sets of pressure devices 3. Simultaneously, in the bending process of the steel bar 5, the steel bar 5 is mutually linked with the clamping wheel set 7 in the limiting groove 63 to form a clamping state which is more stable for the steel bar 5, and then a more stable state is formed in the bending test process of the steel bar 5, so that the bending test detection is realized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. The utility model provides a reinforcing bar bending performance detection device, includes two sets of supporting component (2) that are used for clamping reinforcing bar (5), and the upper and lower both sides position between two sets of supporting component (2) all is provided with pressure device (3), and two sets of pressure device (3) are used for respectively to support and press reinforcing bar (5) to realize buckling up and lower both sides; the support assembly (2) comprises a rotating seat (21), a supporting seat (22) and a sliding assembly (23), wherein the rotating seat (21) is rotationally connected to the frame through a supporting shaft (1), the supporting seat (22) is fixed on the rotating seat (21), and the sliding assembly (23) is slidably connected to the supporting seat (22) and can slide along the directions of the two groups of the supporting assemblies (2); a limiting groove (63) for accommodating the steel bar (5) is formed in the sliding assembly (23), clamping wheel sets (7) are arranged on two sides of the limiting groove (63), and the clamping wheel sets (7) are used for clamping the steel bar (5);
the sliding assembly (23) comprises a supporting plate (6), a first supporting block (61) and a second supporting block (62) are arranged on the supporting plate (6), and a limit groove (63) for accommodating the reinforcing steel bars (5) is formed between the first supporting block (61) and the second supporting block (62); two assembly clamping wheel sets (7) are arranged on the first supporting block (61), and an assembly clamping wheel set (7) is arranged on the second supporting block (62);
the clamping wheel set (7) comprises a wheel body (73) and an eccentric sleeve (74), the wheel body (73) is rotatably supported through a wheel shaft (75), the eccentric sleeve (74) is arranged on the periphery of the wheel body (73), one side of the eccentric sleeve (74) is a small-diameter part (741), and the other side of the eccentric sleeve is a large-diameter part (742); the wheel body (73) realizes unidirectional rotation through a linkage mechanism (8);
a linkage cavity (76) is formed in one side, facing the opening of the limit groove (63), of the wheel body (73), a first linkage block (710) and a second linkage block (711) are arranged in the linkage cavity (76), and the end faces of the first linkage block (710) and the second linkage block (711) are abutted against each other to realize unidirectional transmission; the first linkage block (710) is linked with the inner periphery of the wheel body (73) and can realize synchronous rotation; the second linkage block (711) is supported by a support sleeve (77) and is kept axially and rotationally fixed.
2. The device for detecting the bending performance of the steel bar according to claim 1, wherein the linkage mechanism (8) comprises a first ratchet (81) and a second ratchet (82), the first ratchet (81) is fixed on the end face of the first linkage block (710), and the second ratchet (82) is fixed on the end face of the second linkage block (711) and distributed in an annular structure; the first ratchet (81) is opposite to the second ratchet (82), and unidirectional ratchet linkage can be realized.
3. The device for detecting bending performance of a steel bar according to claim 2, wherein the first ratchet (81) comprises a first plane (811) and a first inclined plane (812), the second ratchet (82) comprises a second plane (821) and a second inclined plane (822), and the first plane (811) is abutted against the second plane (821) for realizing unidirectional abutting transmission; the first inclined plane (812) and the second inclined plane (822) are mutually propped against each other and are used for realizing relative rotation through slipping.
4. The device for detecting the bending performance of the steel bar according to claim 1, wherein a second limiting block (713) is fixed on the periphery of the first linking block (710), a second limiting groove (712) is formed in the inner periphery of the linking cavity (76), the second limiting groove (712) is axially arranged, and the second limiting block (713) is slidably connected in the second limiting groove (712) and can realize axial sliding limiting; a second spring (716) is elastically pressed between the inner side end surface of the linkage cavity (76) and the second limiting block (713); and a second accommodating groove (717) for accommodating the spring is formed in the inner side end surface of the linkage cavity (76).
5. The steel bar bending performance detection device according to claim 1, wherein a limiting shaft (72) is slidably connected to the supporting sleeve (77), one end of the limiting shaft (72) extends into the linkage cavity (76) and is fixedly connected with the second linkage block (711), and the other end of the limiting shaft (72) extends to the outer side of the supporting block; a first spring (714) is elastically pressed between the first linkage block (710) and the second linkage block (711), and a first accommodating groove (715) for accommodating the spring is formed in the first linkage block (710) and the second linkage block (711).
6. The device for detecting the bending performance of the steel bar according to claim 5, wherein a blocking rod (9) is arranged on the outer sides of the first supporting block (61) and the second supporting block (62), and the blocking rod (9) is arranged at an opening of the limiting groove (63) and used for blocking the steel bar (5); one end of the baffle rod (9) is fixedly connected to the first supporting block (61) or the second supporting block (62) and is fixed through a bolt (91); the blocking rod (9) is used for propping against the outer end of the limiting shaft (72) and pushing the first linkage block (710) and the second linkage block (711) to mutually prop against and press the ratchet to realize linkage.
7. A method for detecting bending performance of a steel bar, characterized in that the bending detection is performed by using the detection device according to any one of claims 1 to 6.
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