A steel strength testing equipment for building inspection

Abstract

The present invention discloses a steel strength testing device for building inspection, including an adjusting ring frame and a hanger, wherein both sides of the adjusting ring frame are provided with embedded grooves, both sides of the adjusting ring frame are provided with stabilizing frames that are slidably fitted with the embedded grooves, the stabilizing frames are provided with balancing grooves, the adjusting ring frame is provided with perforations, the hanger is provided with a hydraulic cylinder, the bottom end of the hydraulic cylinder output shaft is provided with a down-pressing column, and the bottom surface of the down-pressing column is provided with a positioning block. The present invention overcomes the shortcomings of the prior art, can be adapted to different specifications of steel bars for reverse bending inspection, and when steel bars that do not need to be heated during the inspection are put into inspection, the inspection efficiency is significantly improved, and has high social use value and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel material detection, and in particular to a steel material strength detection device for building detection. Background Art

[0002] Construction steel is a general term for various steel materials used in construction projects. It mainly includes steel sections, steel plates, steel pipes, rebars, etc. In existing buildings, most of them are made of concrete. Before pouring concrete, it is necessary to lay sufficient steel bars in the pouring formwork to increase the strength of the concrete. After the steel bars are produced, they need to be tested by sampling to see if they are qualified. When testing the steel bars, reverse bending testing can be used to measure the reverse bending performance of the steel bars after undergoing bending plastic deformation and aging treatment, so as to effectively test the strength of the steel bars in actual use.

[0003] However, when existing testing equipment conducts reverse bending testing on steel bars that do not require heating treatment during testing, the steel bars are first bent forward 90 degrees, and then the steel bars need to be manually disassembled. Then the internal component structure of the testing equipment is manually adjusted to adapt the steel bars for subsequent reverse 20-degree bending testing, which makes the testing efficiency of the steel bars relatively slow.

[0004] Furthermore, in actual testing, it is impossible to effectively locate the two ends of the steel bar, which makes it easy for the steel bar position to have a large deviation during the bending process, making the reverse bending test result of the steel bar inaccurate.

[0005] To this end, the inventors have designed and developed a steel strength testing device for construction testing, which performs reverse bending testing on steel bars that do not need to be heated during testing, so as to test the strength of the steel bars. Summary of the invention

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A steel strength testing device for building inspection, comprising an adjusting ring frame and a hanger, wherein both sides of the adjusting ring frame are provided with embedded grooves, both sides of the adjusting ring frame are provided with stabilizing frames which are slidably fitted with the embedded grooves, a balancing groove is provided on the stabilizing frame, a through hole is provided on the adjusting ring frame, a hydraulic cylinder is provided on the hanger, a lower pressure column is provided at the bottom end of the output shaft of the hydraulic cylinder, and a positioning block is provided on the bottom surface of the lower pressure column;

[0008] An extension frame is provided on the lower pressure column, and synchronous frames are provided on the left and right sides of the adjustment ring frame, and a balancing convex block which is slidably mounted with the balancing groove is provided on the synchronous frame;

[0009] The synchronous frame is provided with a clamping mechanism for fixing the steel, the top inner side of the adjusting ring frame is provided with a forward bending component, the bottom end of the forward bending component is provided with a pressure block A acting on the surface of the steel, the bottom end of the inner side of the adjusting ring frame is provided with a reverse bending component, the top end of the reverse bending component is provided with a pressure block B acting on the surface of the steel.

[0010] Preferably, the clamping mechanism includes a placement frame, both ends of the placement frame are provided with connecting shafts rotatably connected to the synchronization frame, the connecting shaft is provided with an adjustment frame, the placement frame is movably mounted with an upper clamping plate, both ends of the upper clamping plate are provided with adjustment columns movably mounted with the adjustment frame, the bottom end of the adjustment column is provided with an adjustment plate, and the bottom surface of the placement frame is rotatably provided with an adjustment screw threadedly mounted with the adjustment plate.

[0011] Preferably, a clamping block A is provided in the placement rack, and a clamping block B cooperating with the clamping block A to fix the steel is provided in the upper clamping plate.

[0012] Preferably, the forward bending component includes a mounting plate A connected to the inner top end of the adjusting ring frame, a first sleeve is provided at the bottom end of the mounting plate A, limiting holes A are provided on both sides of the surface of the first sleeve, a through rod A is movable inside the first sleeve, and the bottom end of the through rod A is connected to the pressure block A, and the top end of the through rod A is provided with an alignment rod A which is movable with the through hole.

[0013] Preferably, both sides of the top end of the penetration rod A are provided with a limit frame A which is slidably fitted with the limit hole A, and a return spring A is provided on the limit frame A, and the top end of the return spring A is connected to the bottom surface of the mounting plate A.

[0014] Preferably, the limit frame A is further provided with a damper A for slowing down the speed of restoring the potential energy of the reset spring A, and the top of the damper A is connected to the bottom surface of the mounting plate A;

[0015] The top surface of the alignment rod A is provided with an alignment hole A for the alignment block to be aligned and inserted.

[0016] Preferably, the reverse bending component includes a mounting frame B connected to the inner bottom end of the adjusting ring frame, a second sleeve is provided on the mounting frame B, limiting holes B are provided on both sides of the surface of the second sleeve, a through rod B is movably sleeved inside the second sleeve and connected to the pressure block B at the top, an alignment rod B movably sleeved with the through hole is provided at the bottom end of the through rod B, and an alignment hole B is provided on the bottom surface of the alignment rod B for the alignment block to be aligned and inserted.

[0017] Preferably, both sides of the bottom end of the penetration rod B are provided with a limit frame B that slidably matches the limit hole B, and the limit frame B is provided with a return spring B, and the bottom end of the return spring B is connected to the top surface of the mounting frame B;

[0018] The limit frame B is provided with a damper B, and the bottom end of the damper B is connected to the top surface of the mounting frame B.

[0019] Preferably, positioning frames that slide with the embedded groove are provided on both sides of the middle of the bottom surface of the hanger, and an embedded strip that slides with the embedded groove is provided at the bottom inner end of the positioning frame. The positioning frame is also provided with a guide hole that provides guide balance for the extension frame.

[0020] Preferably, a speed increasing gearbox is provided on the positioning frame, an outer surface of the adjusting ring frame is provided with an outer gear ring, and an output gear meshing and matching with the outer gear ring is provided on the output shaft of the speed increasing gearbox.

[0021] Preferably, a first suspension is provided on the hanger, a second suspension is provided on the first suspension, and a guide groove is provided on the first suspension.

[0022] Preferably, a support bar is provided at the end of the extension frame, a guide bar slidably matched with the guide groove is provided on the support bar, a spur rack is also provided on the support bar, and empty bars are provided at the top and bottom of the spur rack.

[0023] Preferably, an input gear is provided on the input shaft of the speed increasing gearbox, a one-way transmission assembly is provided on the first suspension, the one-way transmission assembly comprises a driving gear and a transmission gear rotatably arranged with the first suspension, the driving gear is meshed and matched with a spur rack, a pawl plate is provided on the driving gear, a ratchet plate is rotatably mounted on the pawl plate, and a driven gear rotatably connected with the second suspension is provided on the ratchet plate;

[0024] The driven gear is meshed and matched with the transmission gear, and the transmission gear is meshed and matched with the input gear.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] By setting up the forward bending component and the reverse bending component, and utilizing the coordinated effect of the bending detection directions of the pressure blocks A and B, it is possible to complete the reverse bending detection of the steel bars that do not need to be heated after forward bending and then reverse bent. There is no need to frequently disassemble the steel bars, thereby improving the efficiency of the reverse bending detection of the steel bars.

[0027] By adjusting the settings of the ring frame, stabilizing frame and synchronous frame, the stability and accuracy of the detection process are ensured. At the same time, the setting of the clamping mechanism is utilized to enable the steel bars to maintain a relatively stable clamping state during the detection process. At the same time, a slight displacement between the steel bars and the clamping mechanism is allowed during the bending process, thus avoiding excessive stretching caused by over-tight clamping and ensuring the accuracy of the test results.

[0028] By utilizing the settings of hydraulic cylinders, speed-increasing gearboxes and one-way transmission components, the detection process is automated and facilitated. Operators only need to make simple settings to quickly perform reverse bending after the steel bars have completed forward bending, which greatly improves the detection efficiency.

[0029] Through the setting of the clamping block A and the clamping block B in the clamping mechanism, both can be adapted to different specifications of steel bars for replacement, so that the equipment can be widely used in the detection of steel bars of different sizes and types, thereby improving the versatility and practicality of the equipment.

[0030] By setting the reset spring A, the penetration rod A can be driven to be lifted and reset inside the first sleeve, so that the penetration rod A and the alignment rod A can be conveniently put into the next pressing operation without manual adjustment, thereby improving the efficiency of the detection operation.

[0031] Through the setting of the damper A, when the return spring A recovers its elastic potential energy, the damper A can slow down the potential energy recovery speed of the return spring A, so as to make the return speed of the lower pressure column faster than the return speed of the alignment rod A, so that the adjustment ring frame can rotate and adjust the angle after the lower pressure column is separated from the alignment rod A, so as to automatically adjust the position swap of the forward bending component and the reverse bending component, so as to facilitate the rapid reverse bending processing after the forward bending processing of the steel bar is completed.

[0032] In summary, the present invention overcomes the shortcomings of the prior art, can adapt to different specifications of steel bars for reverse bending detection, and when steel bars that do not need to be heated during the detection are put into detection, the detection efficiency is significantly improved, and it has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is an exploded schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 3 Based Figure 1 Schematic diagram of the local structure at A in the middle;

[0037] Figure 4 Based Figure 1 Schematic diagram of the local structure at B in the middle;

[0038] Figure 5 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0039] Figure 6It is a schematic diagram of the structural splicing of the adjusting ring frame and the synchronous frame in the present invention;

[0040] Figure 7 It is a schematic structural diagram of the forward bending component in the present invention;

[0041] Figure 8 It is a schematic diagram of the structural position of the spur rack and the driving gear in the present invention;

[0042] Fig. 9 It is a schematic diagram of the structural position of the speed increasing gearbox in the present invention;

[0043] Fig.10 It is a schematic diagram of the structure of the reverse bending component in the present invention;

[0044] Fig.11 It is a structural schematic diagram of the adjusting ring frame in the present invention;

[0045] Fig.12 It is a schematic diagram of the structural position of the spur rack in the present invention.

[0046] In the figure: 1. Adjustment ring frame; 101. Inlaid groove; 102. Stabilizing frame; 1021. Balance groove; 103. External gear ring; 104. Perforation; 2. Hanger; 201. First suspension; 2011. Guide groove; 202. Second suspension; 21. Hydraulic cylinder; 22. Down-pressing column; 221. Extension frame; 23. Alignment block; 3. Positioning frame; 31. Guide hole; 32. Inlaid strip; 4. Synchronous frame; 41. Balance convex block; 5. Clamping mechanism; 501. Placement frame; 5011. Block A; 502. Connecting shaft; 5021. Adjustment frame; 503. Adjustment column; 504. Upper clamping plate; 5041. Block B; 505. Adjustment plate; 506. Adjustment screw; 6. Forward bending assembly; 601. First sleeve; 6011. Limit hole A; 602. Mounting plate A; 603 , through rod A; 604, limit frame A; 6041, return spring A; 6042, damper A; 605, alignment rod A; 6051, alignment hole A; 61, pressure block A; 7, reverse bending component; 701, second sleeve; 7011, limit hole B; 702, mounting frame B; 703, through rod B; 704, limit frame B; 7041, return spring B; 7042, damper B; 705, alignment rod B; 7051, alignment hole B; 71, pressure block B; 8, support bar; 81, guide bar; 82, spur rack; 821, idle bar; 9, one-way transmission assembly; 901, driving gear; 9011, ratchet plate; 902, driven gear; 9021, ratchet plate; 903, transmission gear; 10, speed increasing gear box; 11, input gear; 12, output gear. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0048] Reference Figure 1-12 A steel strength testing device for building inspection comprises an adjusting ring frame 1 and a hanger 2, the hanger 2 is directly connected to an external mounting bracket, both sides of the adjusting ring frame 1 are provided with embedded grooves 101, both sides of the adjusting ring frame 1 are provided with stabilizing frames 102 which are slidably fitted with the embedded grooves 101, the stabilizing frames 102 cooperate with the embedded grooves 101 to support the adjusting ring frame 1, provide stability for the installation of the adjusting ring frame 1, and enable the adjusting ring frame 1 and the stabilizing frames 102 to rotate relative to each other, a balancing groove 1021 is provided on the stabilizing frame 102, a through hole 104 is provided on the adjusting ring frame 1, and the through hole 104 is provided at the top and bottom of the adjusting ring frame 1, a hydraulic cylinder 21 is provided on the hanger 2, a lower pressure column 22 is provided at the bottom end of the output shaft of the hydraulic cylinder 21, and a positioning block 23 is provided on the bottom surface of the lower pressure column 22;

[0049] An extension frame 221 is provided on the lower pressure column 22, and a synchronous frame 4 is provided on both sides of the left and right sides of the adjusting ring frame 1. The synchronous frame 4 is provided with a balancing protrusion 41 that is slidably mounted with the balancing groove 1021. When the adjusting ring frame 1 is rotated 180 degrees, the synchronous frame 4 will also be rotated synchronously with the adjusting ring frame 1. The matching effect between the balancing groove 1021 and the balancing protrusion 41 allows the stabilizing frame 102 to cooperate with the adjusting ring frame 1 to provide support for the synchronous frame 4 when it is stationary or rotating.

[0050] A clamping mechanism 5 for fixing the steel is provided on the synchronous frame 4, a forward bending component 6 is provided on the inner top of the adjusting ring frame 1, a pressure block A61 acting on the surface of the steel is provided at the bottom end of the forward bending component 6, a reverse bending component 7 is provided on the inner bottom end of the adjusting ring frame 1, a pressure block B71 acting on the surface of the steel is provided at the top end of the reverse bending component 7, when the forward bending component 6 cooperates with the pressure block A61 and the reverse bending component 7 cooperates with the pressure block B71 to perform bending detection on the steel bars, the clamping mechanism 5 can provide effective clamping operation for both ends of the steel bars, and the position of the steel bars in the clamping mechanism 5 can be moved laterally, so as to adapt to the slight displacement caused by bending when the steel bars are bent.

[0051] Specifically, the clamping mechanism 5 includes a placement frame 501, both ends of which are provided with connecting shafts 502 rotatably connected to the synchronization frame 4, an adjustment frame 5021 is provided on the connecting shaft 502, an upper clamping plate 504 is movably mounted on the placement frame 501, both ends of the upper clamping plate 504 are provided with adjustment columns 503 movably mounted with the adjustment frame 5021, an adjustment plate 505 is provided at the bottom end of the adjustment column 503, and an adjustment screw 506 is rotatably mounted on the bottom surface of the placement frame 501 and threadedly mounted with the adjustment plate 505.

[0052] Specifically, a clamping block A5011 is provided in the placement rack 501, and a clamping block B5041 is provided in the upper clamping plate 504 for fixing the steel material in cooperation with the clamping block A5011. Through the setting of the clamping mechanism 5, the clamping block A5011 and the clamping block B5041 can be replaced to adapt to steel bars of different specifications. When performing the steel bar clamping operation, it is only necessary to place the steel bar in the clamping block A5011, and then rotate the adjusting screw 506 to allow the adjusting plate 505 to drive the upper clamping plate 504 to approach the placement rack 501 through the adjusting column 503, so that the clamping block A5011 and the clamping block B5041 complete the clamping operation on the steel bar. After the clamping process is completed, as the bending test of the steel bar is carried out, the steel bar can be slightly displaced in the clamping block A5011 and the clamping block B5041 to avoid the phenomenon that the steel bar is excessively stretched due to the clamping of the clamping mechanism 5 during the bending test. Example 2

[0053] Reference Figure 1-12 The difference between this embodiment and embodiment 1 is that the forward bending component 6 includes a mounting plate A602 connected to the inner top end of the adjusting ring frame 1, a first sleeve 601 is provided at the bottom end of the mounting plate A602, and limiting holes A6011 are provided on both sides of the surface of the first sleeve 601. A through rod A603 is movably mounted inside the first sleeve 601 and connected to a pressure block A61 at the bottom end, and a positioning rod A605 movably mounted with the through hole 104 is provided at the top end of the through rod A603. The downward movement of the down-pressing column 22 allows the down-pressing column 22 to press down the positioning rod A605, so that the pressure block A61 at the bottom end of the through rod A603 can act on the steel bar to be bent and tested, so that the steel bar is subjected to a ninety-degree forward bending treatment.

[0054] Specifically, both sides of the top of the through rod A603 are provided with limit frames A604 that are slidably fitted with the limit holes A6011, and the limit frames A604 are provided with return springs A6041. The top of the return spring A6041 is connected to the bottom surface of the mounting plate A602. As the lower pressure column 22 rises under the recovery movement of the output shaft of the hydraulic cylinder 21, the alignment rod A605 can be raised in height under the recovery action of the elastic deformation potential energy of the return spring A6041, so that the pressure block A61 can gradually move away from the steel bar that has been subjected to the positive ninety-degree bending test.

[0055] Specifically, the limit frame A604 is also provided with a damper A6042 for slowing down the speed of restoring the potential energy of the return spring A6041, and the top of the damper A6042 is connected to the bottom surface of the mounting plate A602;

[0056] The top surface of the alignment rod A605 is provided with an alignment hole A6051 for the alignment block 23 to be aligned and inserted. Through the setting of the damper A6042, the speed of the potential energy recovery of the return spring A6041 can be slowed down during the elastic potential energy recovery stage, so that the displacement speed of the lower pressure column 22 is faster than the displacement speed of the alignment rod A605, so that the lower pressure column 22 can be separated from the alignment rod A605 during the rising stage.

[0057] For other structures not described, refer to Example 1. Example 3

[0058] Reference Figure 1-12 The difference between this embodiment and embodiment 1 is that the reverse bending component 7 includes a mounting frame B702 connected to the inner bottom end of the adjusting ring frame 1, a second sleeve 701 is provided on the mounting frame B702, and limiting holes B7011 are provided on both sides of the surface of the second sleeve 701. A through rod B703 connected to the pressure block B71 at the top is movably mounted in the second sleeve 701, and an alignment rod B705 movably mounted with the through hole 104 is provided at the bottom end of the through rod B703. An alignment hole B7051 is provided on the bottom surface of the alignment rod B705 for aligning and inserting the alignment block 23. The downward movement of the lower pressure column 22 allows the lower pressure column 22 to press down the alignment rod B705, so that the pressure block B71 at the bottom end of the through rod B703 can act on the steel bar to be bent and tested, so that the steel bar is reversely bent by 20 degrees. The downward pressing stroke of the reverse bending component 7 and the forward bending component 6 has a certain length difference due to the difference in the forward and reverse angles of the bending test.

[0059] Specifically, both sides of the bottom end of the penetration rod B703 are provided with a limit frame B704 that slidably matches the limit hole B7011, and a return spring B7041 is provided on the limit frame B704, and the bottom end of the return spring B7041 is connected to the top surface of the mounting frame B702;

[0060] A damper B7042 is provided on the limit frame B704, and the bottom end of the damper B7042 is connected to the top surface of the mounting frame B702. The length of the alignment rod B705 and the length of the alignment rod A605 have a certain length difference due to the difference in the positive and negative angles of the bending detection. The position recovery speed of the alignment rod B705 after the downward pressure is completed is also slower than the position recovery speed of the downward pressure column 22.

[0061] For other structures not described, refer to Example 1. Example 4

[0062] Reference Figure 1-12The difference between this embodiment and embodiment 1 is that positioning frames 3 that are slidably fitted with the embedded groove 101 are provided on both sides of the middle part of the bottom surface of the hanger 2, and an embedded strip 32 that is slidably matched with the embedded groove 101 is provided at the inner bottom end of the positioning frame 3. A guide hole 31 is also provided on the positioning frame 3 to provide a guide balance for the extension frame 221. The setting of the positioning frame 3 cooperates with the setting of the stabilizing frame 102, so that the adjustment ring frame 1 can remain stable during rotation adjustment, so that the lower pressure column 22 can be aligned with the alignment rod A605 and the alignment rod B705 respectively after the rotation adjustment of the adjustment ring frame 1 is completed, so that the alignment block 23 can be inserted into the alignment hole A6051 and the alignment hole B7051.

[0063] Specifically, a speed increasing gear box 10 is provided on the positioning frame 3, an outer gear ring 103 is provided on the outer surface of the adjusting ring frame 1, and an output gear 12 meshing and matching with the outer gear ring 103 is provided on the output shaft of the speed increasing gear box 10. As the internal gear of the speed increasing gear box 10 rotates, the output gear 12 can mesh and match with the outer gear ring 103, so that the adjusting ring frame 1 can be rotated and adjusted in position. The single rotation angle of the adjusting ring frame 1 is one hundred and eighty degrees, and the positions of the forward bending component 6 and the reverse bending component 7 can be swapped and adjusted, so that the lower pressure column 22 can act on the forward bending component 6 and the reverse bending component 7 respectively.

[0064] Specifically, a first suspension 201 is provided on the hanger 2 , a second suspension 202 is provided on the first suspension 201 , and a guide groove 2011 is provided on the first suspension 201 .

[0065] Specifically, a support bar 8 is provided at the end of the extension frame 221, and a guide bar 81 is provided on the support bar 8 to slideably match the guide groove 2011. A spur rack 82 is also provided on the support bar 8, and an empty bar 821 is provided at the top and bottom ends of the spur rack 82. The opening of the guide groove 2011 can provide a stable guide for the up and down displacement adjustment of the support bar 8.

[0066] Specifically, an input gear 11 is provided on the input shaft of the speed increasing gearbox 10, a one-way transmission assembly 9 is provided on the first suspension 201, the one-way transmission assembly 9 includes a driving gear 901 and a transmission gear 903 which are rotatably arranged with the first suspension 201, the driving gear 901 is meshed and matched with the spur rack 82, a pawl plate 9011 is provided on the driving gear 901, a ratchet plate 9021 is rotatably mounted on the pawl plate 9011, and a driven gear 902 which is rotatably connected with the second suspension 202 is provided on the ratchet plate 9021;

[0067] The driven gear 902 is meshed and matched with the transmission gear 903, and the transmission gear 903 is meshed and matched with the input gear 11. When the lower pressure column 22 cooperates to adjust the steel bending test in the positive direction of 90 degrees, the lower pressure column 22 will move downward. At this time, the spur rack 82 can mesh and match with the active gear 901, allowing the active gear 901 to rotate positively. The positive rotation of the active gear 901 will not drive the ratchet plate 9021 to rotate through the pawl plate 9011, so that the driven gear 902 is in a stationary state. At this time, the output gear 12 will not mesh and rotate with the outer gear ring 103, and the adjustment ring frame 1 is in a stationary state. After the lower pressure column 22 cooperates to complete the position adjustment of the bending test, it needs to be reset under the action of the output shaft of the hydraulic cylinder 21. During the rising process of the lower pressure column 22, first, the active gear 901 is in the vacant position on the spur rack 82. At 821, the upward movement of the spur rack 82 will not allow it to mesh with the active gear 901. When the spur rack 82 and the active gear 901 are meshed in reverse, the alignment block 23 withdraws from the alignment hole A6051, so that the rotation of the active gear 901 can drive the driven gear 902 to rotate through the cooperation of the pawl plate 9011 and the ratchet plate 9021, and then use the transmission effect of the transmission gear 903 to allow the gear in the speed-increasing gearbox 10 to increase the rotation speed of the output gear 12, so that the meshing match between the output gear 12 and the outer gear ring 103 can drive the adjustment ring frame 1 to rotate 180 degrees, so that the reverse bending component 7 rotates to the initial position of the forward bending component 6, so that the steel bar that has been bent forward by 90 degrees can be bent in the reverse 20 degrees through the reverse bending component 7 and the pressure block B71.

[0068] For other structures not described, refer to Example 1.

[0069] Working principle: In the present invention, firstly, the forward bending component 6 is placed at the top inner side of the adjusting ring frame 1, and then the clamping mechanism 5 is opened, and the steel bar that needs to be tested for reverse bending is placed inside the clamping block A5011, and then the adjusting screw 506 is rotated to splice and lock the upper clamping plate 504 with the placement frame 501, so that the clamping block B5041 cooperates with the clamping block A5011 to position and clamp the steel bar;

[0070] The hydraulic cylinder 21 is turned on to allow the output shaft of the hydraulic cylinder 21 to move downward. The spur rack 82 will be positively meshed with the active gear 901, causing the active gear 901 to rotate, but will not drive the driven gear 902 to rotate. After the downward pressure column 22 passes through the downward pressure of the output shaft of the hydraulic cylinder 21 for a short distance, the alignment block 23 is inserted into the alignment hole A6051. The subsequent downward pressure movement of the downward pressure column 22 will drive the alignment rod A605 to move downward synchronously, so that the penetration rod A603 can drive the pressure block A61 to act on the surface of the steel bar. Through the continuous downward movement of the penetration rod A603, the steel bar can be positively bent until the bending angle of the steel bar reaches ninety degrees, and the downward movement of the output shaft of the hydraulic cylinder 21 can be stopped. At this time, the bottom of the limit frame A604 also reaches the bottom of the limit hole A6011, the reset spring A6041 is in a stretched state, and the damper A6042 is in an open state.

[0071] Start the upward movement of the output shaft of the hydraulic cylinder 21. With the upward movement of the lower pressure column 22, the alignment rod A605 will also move upward under the elastic deformation recovery action of the return spring A6041. However, due to the restriction of the damper A6042 on the deformation recovery speed of the return spring A6041, the upward movement speed of the alignment rod A605 is lower than the upward movement speed of the lower pressure column 22, so that the alignment block 23 can be withdrawn from the alignment hole A6051 in advance. When the alignment block 23 is withdrawn from the alignment hole A6051, the top end of the spur rack 82 will be reversely meshed with the active gear 901. Before the two are reversely meshed, the active gear 901 is in an idle position. 1 side, so that the driving gear 901 can drive the driven gear 902 to rotate through the pawl plate 9011 and the ratchet plate 9021, so that the transmission gear 903 drives the input gear 11 to rotate, and the rotation speed of the output gear 12 is increased through the meshing action of the internal gears of the speed-increasing gear box 10, so that the output gear 12 is meshed and matched with the outer gear ring 103, and the adjusting ring frame 1 is rotated. After the adjusting ring frame 1 rotates 180 degrees, the driving gear 901 is also at the bottom of the spur rack 82, that is, the meshing and matching of the driving gear 901 and the spur rack 82 is completed, and the driving gear 901 stops rotating, so that the position of the adjusting ring frame 1 is fixed;

[0072] After the adjusting ring frame 1 is rotated 180 degrees, the reverse bending component 7 moves to the initial position of the forward bending component 6, and then the output shaft of the hydraulic cylinder 21 is turned on. After the lower pressure column 22 moves a long distance through the downward pressure of the output shaft of the hydraulic cylinder 21, the alignment block 23 is inserted into the alignment hole B7051. The subsequent downward pressure movement of the lower pressure column 22 will drive the alignment rod B705 to move downward synchronously, so that the penetration rod B703 can drive the pressure block B71 to act on the surface of the steel bar, so as to perform a 20-degree reverse bending test on the steel bar that has previously completed the 90-degree forward bending process. The resetting of the penetration rod B703 and the alignment rod B705 is consistent with the resetting of the penetration rod A603 and the alignment rod A605. The resetting speed of the penetration rod B703 and the alignment rod B705 is less than the resetting speed of the lower pressure column 22, so that after the 20-degree reverse bending test, the adjusting ring frame 1 can be rotated 180 degrees again to allow the forward bending component 6 to return to the initial position, that is, the inner top of the adjusting ring frame 1.

[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel strength testing device for building testing, comprising an adjusting ring frame (1) and a hanger (2), characterized in that: Both sides of the adjusting ring frame (1) are provided with embedded grooves (101), both sides of the adjusting ring frame (1) are provided with stabilizing frames (102) which are slidably mounted on the embedded grooves (101), the stabilizing frames (102) are provided with balancing grooves (1021), the adjusting ring frame (1) is provided with through holes (104), the hanging frame (2) is provided with a hydraulic cylinder (21), the bottom end of the output shaft of the hydraulic cylinder (21) is provided with a lower pressure column (22), and the bottom surface of the lower pressure column (22) is provided with a positioning block (23); An extension frame (221) is provided on the lower pressure column (22), and synchronization frames (4) are provided on both left and right sides of the adjustment ring frame (1), and a balancing protrusion (41) is provided on the synchronization frame (4) and is slidably mounted on the balancing groove (1021); The synchronous frame (4) is provided with a clamping mechanism (5) for fixing the steel material, the top of the inner side of the adjusting ring frame (1) is provided with a forward bending component (6), the bottom of the forward bending component (6) is provided with a pressure block A (61) for acting on the surface of the steel material, the bottom of the inner side of the adjusting ring frame (1) is provided with a reverse bending component (7), the top of the reverse bending component (7) is provided with a pressure block B (71) for acting on the surface of the steel material.

2. The steel strength testing equipment for construction testing according to claim 1 is characterized by: The clamping mechanism (5) comprises a placing frame (501), both ends of the placing frame (501) are provided with connecting shafts (502) rotatably connected to the synchronous frame (4), the connecting shaft (502) is provided with an adjusting frame (5021), an upper clamping plate (504) is movably mounted on the placing frame (501), both ends of the upper clamping plate (504) are provided with adjusting columns (503) movably mounted on the adjusting frame (5021), the bottom end of the adjusting column (503) is provided with an adjusting plate (505), and an adjusting screw (506) rotatably mounted on the bottom surface of the placing frame (501) is provided with a threaded sleeve.

3. The steel strength testing equipment for construction testing according to claim 2 is characterized by: A clamping block A (5011) is provided in the placement rack (501), and a clamping block B (5041) is provided in the upper clamping plate (504) for cooperating with the clamping block A (5011) to fix the steel material.

4. The steel strength testing equipment for construction testing according to claim 1 is characterized by: The forward bending assembly (6) comprises a mounting plate A (602) connected to the top inner side of the adjusting ring frame (1); a first sleeve (601) is provided at the bottom end of the mounting plate A (602); limiting holes A (6011) are provided on both sides of the surface of the first sleeve (601); a through rod A (603) whose bottom end is connected to the pressing block A (61) is movably mounted inside the first sleeve (601); and a positioning rod A (605) movably mounted with the through hole (104) is provided at the top end of the through rod A (603).

5. The steel strength testing equipment for construction testing according to claim 4 is characterized by: Both sides of the top end of the penetration rod A (603) are provided with a limit frame A (604) slidably mounted on the limit hole A (6011), and a return spring A (6041) is provided on the limit frame A (604), and the top end of the return spring A (6041) is connected to the bottom surface of the mounting plate A (602).

6. The steel strength testing equipment for construction testing according to claim 5 is characterized by: The limit frame A (604) is also provided with a damper A (6042) for slowing down the speed of restoring the potential energy of the return spring A (6041), and the top end of the damper A (6042) is connected to the bottom surface of the mounting plate A (602); The top surface of the alignment rod A (605) is provided with an alignment hole A (6051) for the alignment block (23) to be aligned and inserted.

7. The steel strength testing equipment for construction testing according to claim 1 is characterized by: The reverse bending assembly (7) comprises a mounting frame B (702) connected to the inner bottom end of the adjusting ring frame (1), a second sleeve (701) is provided on the mounting frame B (702), limiting holes B (7011) are provided on both sides of the surface of the second sleeve (701), a through rod B (703) with a top end connected to the pressing block B (71) is movably mounted inside the second sleeve (701), an alignment rod B (705) movably mounted with the through hole (104) is provided at the bottom end of the through rod B (703), and an alignment hole B (7051) is provided on the bottom surface of the alignment rod B (705) for the alignment block (23) to be aligned and inserted.

8. The steel strength testing equipment for building inspection according to claim 7 is characterized by: Both sides of the bottom end of the penetration rod B (703) are provided with a limit frame B (704) slidably matched with the limit hole B (7011), and a return spring B (7041) is provided on the limit frame B (704), and the bottom end of the return spring B (7041) is connected to the top surface of the mounting frame B (702); The limiting frame B (704) is provided with a damper B (7042), and the bottom end of the damper B (7042) is connected to the top surface of the mounting frame B (702).

9. The steel strength testing equipment for construction testing according to claim 1, characterized in that: Positioning frames (3) slidably fitted with the embedded groove (101) are provided on both sides of the middle of the bottom surface of the hanger (2); an embedded strip (32) slidably matched with the embedded groove (101) is provided at the inner bottom end of the positioning frame (3); and a guide hole (31) is also provided on the positioning frame (3) to provide a guide balance for the extension frame (221).

10. The steel strength testing equipment for construction testing according to claim 9, characterized in that: The positioning frame (3) is provided with a speed-increasing gear box (10), the outer surface of the adjusting ring frame (1) is provided with an outer gear ring (103), and the output shaft of the speed-increasing gear box (10) is provided with an output gear (12) meshing and matching with the outer gear ring (103).

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