A device for testing the bending strength of steel bars

Abstract

The present invention relates to the technical field of steel bar detection, and discloses a steel bar bending strength detection device, comprising a detection platform, a loading box and a positioning component. Through the setting of a movable push plate, not only can the movable push plate complete the loading effect of the steel bars to be detected in the loading box during the movement, but also when the steel bars are loaded, the movable push plate is continued to move, so that the movable clamping plate on the bending block can complete the positioning and clamping of the steel bars. This setting also allows the movable clamping plate to clamp and position the steel bars when the subsequent pressing part performs the bending strength detection on the steel bars. In this way, the steel bar accommodating groove between the movable clamping plate and the bending block is larger at the beginning, which is convenient for the loading of the steel bars. Subsequently, the steel bar accommodating groove is lowered to avoid the situation where the steel bars are offset forward and backward when the steel bars are bent. At the same time, it should be noted that after clamping and positioning, the steel bars can slide left and right on the surface of the movable clamping plate to avoid affecting the subsequent bending detection.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar detection, in particular to a steel bar anti-bending strength detection device. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete, with a circular cross section, sometimes a square with rounded corners. It includes plain round steel bars, ribbed steel bars, and twisted steel bars. The main function of steel bars in construction is to connect and support, and the bending resistance of the steel bars that play a supporting role is particularly important.

[0003] In the prior art, for the bending resistance test of steel bars, the steel bars to be tested are generally placed directly on the test table, and then the corresponding hydraulic press is used to directly complete the bending effect of the steel bars to be tested. Although this method can complete the bending strength test of the steel bars to a certain extent, this method often requires manual loading and unloading. If the number of steel bars to be tested is not large, it is fine. If the number is large, this detection method will reduce the overall detection speed to a certain extent.

[0004] Therefore, the existing demand is not met, and we propose a steel bar bending strength detection device. Summary of the invention

[0005] The present invention provides a device for detecting the bending strength of steel bars, which has the beneficial effects and solves the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solutions: a device for testing the bending strength of steel bars, comprising a testing platform, a feeding box and a positioning assembly, wherein the testing platform is used to perform bending testing on steel bars, a pressing member is further provided above the testing platform, and the pressing member is used to perform bending processing on the steel bars to be tested, and a first storage slot and a second storage slot are respectively provided inside the testing platform, a positioning assembly is provided inside the first storage slot, and a feeding box is provided inside the second storage slot, the feeding box is used to place the steel bars to be tested for bending, and the positioning assembly is used to clamp and position the steel bars to be tested for bending and perform subsequent material unloading processing;

[0007] The connecting base plate in the positioning assembly is rotatably arranged inside the first storage slot, and two bending blocks are symmetrically arranged on the top surface of the connecting base plate. The bending blocks are rotatably arranged on the connecting side plate through corresponding rotating rods and torsion springs, and the connecting side plate is fixedly installed on the top table of the connecting base plate.

[0008] As an optional solution of the steel bar bending strength detection device described in the present invention, a movable screw rod is rotatably arranged inside each bending block, and a movable clamping plate is also sleeved on the movable screw rod, and a threaded connection is formed between the movable clamping plate and the movable screw rod, and an accommodating groove is also opened inside each bending block, and one end of the movable screw rod is movably arranged inside the accommodating groove.

[0009] As an optional solution of a steel bar bending strength detection device described in the present invention, the first connecting gear and the second connecting gear are respectively arranged inside the accommodating slot, the first connecting gear and the second connecting gear are meshed with each other, the first connecting gear is fixedly sleeved on the movable screw rod, and the second connecting gear is rotatably arranged on the inner wall of the accommodating slot through the corresponding rotating rod.

[0010] As an optional solution of a steel bar bending strength detection device described in the present invention, wherein: a first connecting rod and a third connecting rod are respectively arranged below the bending block, one end of the first connecting rod is rotatably arranged on a movable push plate, one end of the third connecting rod is fixedly connected to the movable push plate, an arc groove is provided at a position of the movable push plate corresponding to the first connecting rod, and the first connecting rod is rotatably arranged inside the arc groove through a corresponding arc block, and an arc spring is arranged between the arc groove and the corresponding arc block, and a first sliding groove and a second sliding groove are respectively provided on the first connecting rod;

[0011] The movable push plate is slidably arranged inside the second storage groove, and a connecting groove is also provided on the movable push plate. Two connecting flaps are arranged at one end of the movable push plate close to the bending block, and the two connecting flaps are rotatably connected with the movable push plate through corresponding torsion springs and rotating rods.

[0012] As an optional solution of a steel bar bending strength detection device described in the present invention, wherein: a connecting rack is slidably arranged inside the second sliding groove, and a rotational connection is formed between the connecting rack and the second connecting gear arranged inside the bending block, and a second spring is also arranged between the connecting rack and the second sliding groove, a limiting block is slidably arranged inside the first sliding groove, and a first spring is arranged between the limiting block and the first sliding groove.

[0013] As an optional solution of a steel bar bending strength detection device described in the present invention, the upper end of the limit block is also slidably set inside the limit groove, the limit groove is opened on the bottom surface of the connecting rack, and the side surface of the limit block connected to the first spring is also fixedly connected to one end of the second connecting rod, and the first spring is sleeved on the second connecting rod.

[0014] As an optional solution of a steel bar bending strength detection device described in the present invention, a accommodating cavity is provided inside the feeding box, and a movable inclined surface is provided on the bottom surface of the accommodating cavity, a pushing plate is also movably provided inside the feeding box, and a connecting rod is fixedly connected to the bottom of the pushing plate.

[0015] As an optional solution of a steel bar bending strength detection device described in the present invention, wherein: two connecting sliding rods are fixedly connected to the connecting rod, and the connecting sliding rods are slidably arranged inside the connecting inclined grooves, and the connecting inclined grooves are opened on the inner walls of both sides of the feeding box, and the pushing plate is also provided with a receiving groove, and a partition plate is arranged inside the receiving groove, and the partition plate is rotatably arranged inside the receiving groove through a corresponding rotating rod and a torsion spring.

[0016] As an optional solution of a steel bar bending strength detection device described in the present invention, a connecting hole is provided on the inner wall of the first storage slot away from the loading box, an air bag is provided inside the connecting hole, and a first storage cavity and a second storage cavity are provided on the side of the first storage slot away from the loading box.

[0017] As an optional solution of a steel bar bending strength detection device described in the present invention, a limit plate and a limit platform are arranged inside the first storage cavity, the limit platform is fixedly arranged inside the first storage cavity, a fixed connection is formed between the limit plate and the rotating rod connected to the connecting bottom plate, and a limit rod is also fixedly arranged on the limit plate, one end of a pull rope is fixedly connected to the limit rod, and the other end of the pull rope is fixedly arranged on a piston plate, the piston plate is slidably arranged inside the second storage cavity, and a connecting spring is also arranged between the piston plate and the second storage cavity.

[0018] The present invention has the following beneficial effects:

[0019] 1. The steel bar bending strength testing device, through the setting of the mobile push plate, can not only enable the mobile push plate to complete the loading effect of the steel bars to be tested in the loading box during the movement, but also, after the loading of the steel bars to be tested is completed, by continuing to move the mobile push plate, the mobile clamping plate on the bending block can complete the positioning and clamping of the steel bars to be tested. This setting also allows the subsequent pressing part to use the mobile clamping plate to clamp and position the steel bars when performing the bending strength test on the steel bars to be tested. In this way, the steel bar receiving groove between the mobile clamping plate and the bending block is larger at the beginning, which is convenient for loading the steel bars. Subsequently, by lowering the steel bar receiving groove, the steel bars can be avoided from being offset forward and backward when the steel bars are bent. At the same time, it should be noted that after clamping and positioning, the steel bars can slide left and right on the surface of the mobile clamping plate to avoid affecting the subsequent bending detection.

[0020] 2. The steel bar bending strength testing device, when the steel bar is tested, can release the positioning clamping state of the steel bar by continuing to move the movable push plate again, and at the same time, can also allow the connecting bottom plate to deflect accordingly, so that the steel bar that has completed the test can achieve the corresponding material discharge effect through the deflection of the connecting bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the detection platform of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-section structure of a partial loading box of the present invention.

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of a local pusher plate of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the positioning component of the present invention.

[0026] Figure 6 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0027] Figure 7 It is a schematic diagram of the front section structure of the local positioning component of the present invention.

[0028] Figure 8 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0029] Fig. 9 It is a schematic diagram of the rear end section structure of the local positioning component of the present invention.

[0030] Fig.10 It is a schematic diagram of the enlarged structure of point C of the present invention.

[0031] Fig.11 It is a schematic diagram of the cross-sectional structure of a local detection platform of the present invention.

[0032] Fig.12 It is a schematic diagram of the structure of the partially movable push plate of the present invention.

[0033] In the figure: 1. Inspection table; 2. Loading box; 3. Positioning assembly;

[0034] 101, pressing member; 102, first storage slot; 103, second storage slot; 104, limit plate; 105, limit rod; 106, limit table; 107, pull rope; 108, airbag; 109, first storage chamber; 110, second storage chamber; 111, connecting spring; 112, piston plate; 113, connecting hole;

[0035] 201, accommodating chamber; 202, movable inclined plane; 203, connecting inclined slot; 204, pushing plate; 205, partition plate; 206, accommodating slot; 207, connecting rod; 208, connecting slide rod;

[0036] 301, connecting the bottom plate; 302, connecting the side plate; 303, bending block; 304, moving the clamping plate; 305, moving the screw rod; 306, moving the push plate; 307, the first connecting rod; 308, the first connecting gear; 309, the second connecting gear; 310, connecting the rack; 311, the second connecting rod; 312, the limiting groove; 313, the first sliding groove; 314, the limiting block; 315, the first spring; 316, the second sliding groove; 317, the second spring; 318, the third connecting rod; 319, the accommodating through groove; 320, the connecting groove; 321, the connecting flap; 322, the arc groove; 323, the arc spring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0038] For example, see Figure 1-Figure 4 A steel bar bending strength testing device includes a testing platform 1, a feeding box 2 and a positioning component 3. The testing platform 1 is used to perform bending testing on steel bars. A pressing member 101 is also provided above the testing platform 1. The pressing member 101 is used to perform bending processing on the steel bars to be tested. A first storage slot 102 and a second storage slot 103 are respectively provided inside the testing platform 1. The first storage slot 102 is provided with a positioning component 3. The second storage slot 103 is provided with a feeding box 2. The feeding box 2 is used to place the steel bars to be tested for bending. The positioning component 3 is used to clamp and position the steel bars to be tested for bending and to perform subsequent material unloading processing.

[0039] The connecting base plate 301 in the positioning assembly 3 is rotatably arranged inside the first storage slot 102, and two bending blocks 303 are symmetrically arranged on the top surface of the connecting base plate 301. The bending blocks 303 are rotatably arranged on the connecting side plate 302 through corresponding rotating rods and torsion springs, and the connecting side plate 302 is fixedly installed on the top table surface of the connecting base plate 301.

[0040] An accommodating cavity 201 is provided inside the loading box 2, and a movable inclined surface 202 is provided on the bottom surface of the accommodating cavity 201. A pushing plate 204 is also movably provided inside the loading box 2, and a connecting rod 207 is fixedly connected to the bottom of the pushing plate 204.

[0041] Two connecting slide rods 208 are also fixedly connected to the connecting rod 207. The connecting slide rods 208 are slidably set inside the connecting inclined groove 203. The connecting inclined groove 203 is opened on the inner walls of both sides of the loading box 2. A receiving groove 206 is also opened on the pushing plate 204. A partition plate 205 is set inside the receiving groove 206. The partition plate 205 is rotatably set inside the receiving groove 206 through the corresponding rotating rod and torsion spring.

[0042] The movable push plate 306 is slidably arranged inside the second storage slot 103, and a connecting slot 320 is also opened on the movable push plate 306. Two connecting flaps 321 are arranged at one end of the movable push plate 306 close to the bending block 303, and the two connecting flaps 321 form a rotational connection with the movable push plate 306 through corresponding torsion springs and rotating rods.

[0043] In this embodiment: before the user performs a bending strength test on the steel bars, he first needs to place the steel bars to be tested into the accommodating chamber 201 through the feed hole opened at the top of the loading box 2. Since a push plate 204 is also slidably provided inside the loading box 2, and a partition plate 205 is rotatably provided on the push plate 204 through a corresponding rotating rod and a torsion spring, when the steel bars to be tested are placed into the accommodating chamber 201, the bottom steel bar will squeeze the partition plate 205, so that the partition plate 205 can rotate inside the corresponding accommodating groove 206. Before the partition plate 205 is completely received in the accommodating groove 206, the bottom steel bar just falls into the accommodating chamber 201 below the partition plate 205. Moreover, due to the torsion spring, the partition plate 205 will also rotate through the torsion spring after the flipping is completed. The return spring force of the spring is used to reset the steel bar accordingly. At the same time, since the corresponding steel bar has fallen under the partition plate 205 at this time, even if there is another steel bar to squeeze and press the partition plate 205, the partition plate 205 will be limited by the steel bar below and cannot be flipped over to the angle where the steel bar falls again. Through this arrangement, the steel bar above the partition plate 205 will be separated by the partition plate 205, and when the steel bar below the partition plate 205 has completed the corresponding loading, the limit of the partition plate 205 below will be released, so that the steel bar above the partition plate 205 can fall smoothly. This arrangement is to allow the push plate 204 to only transport one steel bar at a time when loading the steel bars, so as to avoid other steel bars affecting the transportation of the push plate 204 when the push plate 204 is pushing.

[0044] It should be noted that the movable push plate 306 is slidably arranged on the inner walls of both sides of the second storage groove 103, and when the movable push plate 306 is in the initial position, it is located at the end of the loading box 2 away from the first storage groove 102, and according to Figure 3It can be seen that when the movable push plate 306 is in the initial position, the side surface of the movable push plate 306 close to the bending block 303 is in contact with the connecting rod 207, and the side surface of the movable push plate 306 away from the second storage slot 103 is also fixedly connected to the external hydraulic rod. Therefore, when the user pushes the movable push plate 306 through the external hydraulic rod, the movable push plate 306 will move closer to the bending block 303 inside the second storage slot 103, and the lower part of the push plate 204 is fixedly connected with the connecting rod 207, and the connecting rod 207 is slidably arranged inside the connecting inclined slot 203 through the connecting slide rod 208. Therefore, when the movable push plate 306 moves, the connecting rod 207 will first be squeezed by the movable push plate 306, so that the connecting rod 207 can move synchronously with the movement of the movable push plate 306.

[0045] It should be noted that the connecting slide bar 208 is a square slide bar, and this setting is to prevent the connecting slide bar 208 from deflecting and rotating inside the corresponding connecting inclined groove 203 when the push plate 204 moves, thereby affecting the pushing effect of the push plate 204 on the steel bar;

[0046] When the connecting rod 207 moves, the push plate 204 fixedly connected with the connecting rod 207 will push the steel bars under the partition plate 205 under the movement of the connecting rod 207, and as the moving push plate 306 continues to move, the steel bars to be inspected will be pushed by the push plate 204 to move from the discharge hole to the outside of the loading box 2, and finally move to between the two bending blocks 303. Through this arrangement, the moving push plate 306 can complete the loading effect of the steel bars to be inspected during the movement.

[0047] It should be noted that, since a movable inclined surface 202 is provided at the bottom of the accommodating chamber 201, and the connecting rod 207 is also slidably provided inside the connecting inclined groove 203 through the connecting sliding rod 208, when the connecting rod 207 moves, its height will gradually increase. This arrangement is to allow the push plate 204 to be separated from the movable push plate 306 after completing the loading of the steel bars to be tested;

[0048] After the connecting rod 207 is separated from the movable push plate 306, Figure 3 It can be seen that a spring is also arranged between the push plate 204 and the inner wall of the inspection table 1. Therefore, the spring stretched by the movement of the push plate 204 will be reset accordingly at this time, and the push plate 204 will also be reset accordingly along the moving inclined surface 202 and the connecting inclined groove 203 under the action of the reset elastic force of the spring. This arrangement not only allows the steel bars above the push plate 204 to fall smoothly, but also after the push plate 204 is reset, it is also convenient for the later moving push plate 306 to complete the corresponding feeding effect again;

[0049] It should be noted that since a connecting groove 320 is also provided on the movable push plate 306, and two connecting flaps 321 are also provided at one end of the connecting groove 320 close to the positioning assembly 3, and the connecting flap 321 is rotatably connected to the connecting groove 320 through a corresponding rotating rod and a torsion spring, at the same time, the connecting flap 321 can only flip in one direction, and the flipping direction will only flip in the direction away from the loading box 2. Therefore, when the movable push plate 306 squeezes and moves the connecting rod 207, the two connecting flaps 321 will only push the connecting rod 207 under the limiting action of the movable push plate 306, and will not flip. After the movable push plate 306 is reset and passes through the connecting rod 207 again, the connecting rod 207 will contact the two connecting flaps 321 again. However, at this time, through the squeezing of the connecting rod 207, the two connecting flaps 321 will flip in the direction away from the feeding box 2 so that the connecting rod 207 can pass through the connecting groove 320 smoothly. This setting is also to avoid the movable push plate 306 being stuck when the movable push plate 306 is subsequently reset, because the connecting rod 207 has been reset. If the movable push plate 306 contacts the connecting rod 207, the movable push plate 306 will not be able to complete the corresponding feeding work again.

[0050] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. Figure 1 , Figure 5-Figure 10 As shown, a movable screw rod 305 is rotatably arranged inside each bending block 303, and a movable clamp plate 304 is also sleeved on the movable screw rod 305, and a threaded connection is formed between the movable clamp plate 304 and the movable screw rod 305, and a receiving groove 319 is also opened inside each bending block 303, and one end of the movable screw rod 305 is movably arranged inside the receiving groove 319.

[0051] The first connecting gear 308 and the second connecting gear 309 are respectively arranged inside the accommodating groove 319, and the first connecting gear 308 and the second connecting gear 309 are meshed with each other. The first connecting gear 308 is fixedly sleeved on the moving screw rod 305, and the second connecting gear 309 is rotatably arranged on the inner wall of the accommodating groove 319 through the corresponding rotating rod.

[0052] A first connecting rod 307 and a third connecting rod 318 are respectively arranged below the bending block 303. One end of the first connecting rod 307 is rotatably arranged on the movable push plate 306. One end of the third connecting rod 318 is fixedly connected to the movable push plate 306. An arc groove 322 is provided at the position of the movable push plate 306 corresponding to the first connecting rod 307. The first connecting rod 307 is rotatably arranged inside the arc groove 322 through the corresponding arc block. An arc spring 323 is arranged between the arc groove 322 and the corresponding arc block. The first connecting rod 307 is respectively provided with a first sliding groove 313 and a second sliding groove 316.

[0053] A connecting rack 310 is slidably arranged inside the second sliding groove 316, and a rotational connection is formed between the connecting rack 310 and the second connecting gear 309 arranged inside the bending block 303, and a second spring 317 is also arranged between the connecting rack 310 and the second sliding groove 316, and a limit block 314 is slidably arranged inside the first sliding groove 313, and a first spring 315 is arranged between the limit block 314 and the first sliding groove 313.

[0054] In this embodiment: since the first connecting rod 307 and the third connecting rod 318 are respectively provided on the side surface of the movable push plate 306 close to the positioning assembly 3, when the movable push plate 306 moves, the first connecting rod 307 and the third connecting rod 318 will also move synchronously, and the first connecting rod 307 is also provided with a first sliding groove 313 and a second sliding groove 316, and a connecting rack 310 is also slidably provided inside the second sliding groove 316, so that when the first connecting rod 307 synchronously follows the connecting rack 310 to move, the connecting rack 310 will gradually contact with the second connecting gear 309 provided inside the accommodating through groove 319 and mesh with each other;

[0055] When the second connecting gear 309 rotates by meshing with the connecting rack 310, the first connecting gear 308, which is also arranged in the accommodating groove 319 and meshing with the second connecting gear 309, will also rotate accordingly. Since the first connecting gear 308 is fixedly sleeved on the moving screw rod 305, the moving screw rod 305 will rotate accordingly.

[0056] When the moving screw rod 305 rotates, the moving clamping plate 304 which is sleeved on the moving screw rod 305 and is threadedly connected with the moving screw rod 305 will move accordingly under the rotation of the moving screw rod 305, and complete the positioning and clamping of the steel bar to be tested;

[0057] It should be noted that the meshing between the connecting rack 310 and the second connecting gear 309 is performed after the steel bar to be detected has been pushed between the movable clamping plate 304 and the bending block 303;

[0058] Through the above-mentioned arrangement, after the push plate 204 has completed the loading of the steel bar to be tested, the push plate 306 continues to move, and the mobile clamping plate 304 on the bending block 303 completes the corresponding moving effect, thereby completing the positioning and clamping of the steel bar to be tested. This arrangement also allows the subsequent pressing member 101 to use the mobile clamping plate 304 to clamp and position the steel bar when performing a bending strength test on the steel bar to be tested. In this way, the steel bar receiving groove between the mobile clamping plate 304 and the bending block 303 is larger at the beginning, which is convenient for loading the steel bar. The steel bar receiving groove is subsequently lowered to avoid the steel bar being offset forward and backward when the steel bar is subsequently bent. At the same time, it should be noted that after clamping and positioning, the steel bar can slide left and right on the surface of the mobile clamping plate 304 to avoid affecting the subsequent bending test.

[0059] When the steel bar to be tested is positioned and clamped, the user can start the pressing member 101 arranged above the testing platform 1. Since the pressing member 101 is driven by an external hydraulic rod, as the external hydraulic rod descends, the pressing member 101 will also descend synchronously, thereby completing the contact with the steel bar to be tested, and finally completing the bending effect on the steel bar.

[0060] It should be noted that the elastic force of the first spring 315 connected to the limit block 314 is greater than that of the second spring 317 connected to the connecting rack 310. This arrangement allows the connecting rack 310 to maintain a corresponding stable state and form contact with the second connecting gear 309 through the larger elastic force of the first spring 315 when the connecting rack 310 moves close to the bending block 303 to a certain extent, so that the connecting rack 310 can complete the meshing with the corresponding second connecting gear 309.

[0061] When the subsequent limit block 314 moves, the connecting rack 310 will be reset by the restoring elastic force of the second spring 317, so that the second connecting gear 309 is meshed with the connecting rack 310, and the movable clamping plate 304 releases the positioning clamping of the steel bar, so that the subsequent turning and unloading effect of the steel bar will not be affected;

[0062] It should be noted that since the two bending blocks 303 are rotatably set on the corresponding connecting side plates 302 through corresponding rotating rods and torsion springs, when the steel bars are bent under force, the two bending blocks 303 will also rotate synchronously to cooperate with the steel bars to bend accordingly. It should be noted that before the pressing member 101 presses the steel bars, the connecting rack 310 has also completed the meshing and rotating effect of the second connecting gear 309 on the bending block 303 away from the feeding box 2. This ensures that even if the two bending blocks 303 rotate, the second connecting gear 309 will not be stuck due to the connecting rack 310.

[0063] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. Figure 1 , Figure 5 , Fig. 9 , Fig.11 as well as Fig.12 As shown, the upper end of the limit block 314 is also slidably set inside the limit groove 312, and the limit groove 312 is opened on the bottom surface of the connecting rack 310, and the side surface of the limit block 314 connected to the first spring 315 is also fixedly connected to one end of the second connecting rod 311, and the first spring 315 is sleeved on the second connecting rod 311.

[0064] A connecting hole 113 is provided on the inner wall of the inspection platform 1 away from the loading box 2 , and an air bag 108 is provided inside the connecting hole 113 . A first storage cavity 109 and a second storage cavity 110 are provided on the side of the first storage slot 102 away from the loading box 2 .

[0065] A limit plate 104 and a limit platform 106 are arranged inside the first storage cavity 109. The limit platform 106 is fixedly arranged inside the first storage cavity 109. A fixed connection is formed between the limit plate 104 and the rotating rod connected to the connecting bottom plate 301. A limit rod 105 is also fixedly arranged on the limit plate 104. One end of a pull rope 107 is fixedly connected to the limit rod 105. The other end of the pull rope 107 is fixedly arranged on a piston plate 112. The piston plate 112 is slidably arranged inside the second storage cavity 110. A connecting spring 111 is also arranged between the piston plate 112 and the second storage cavity 110.

[0066] In this embodiment: since a limiting block 314 is slidably arranged inside the first sliding groove 313, and the upper end of the limiting block 314 is also slidably arranged inside the limiting groove 312 opened at the bottom of the connecting rack 310, at the same time, a side surface of the limiting block 314 away from the second sliding groove 316 is not only fixedly connected to the second connecting rod 311, but also connected to the first sliding groove 313 by a first spring 315. This arrangement can allow the limiting block 314 to be in a relatively fixed state inside the first sliding groove 313 through the connecting elastic force of the first spring 315, and then the limiting block 314 can complete the limiting fixation of the connecting rack 310 through the limiting groove 312, so that the connecting rack 310 can smoothly complete the meshing between the two second connecting gears 309;

[0067] When the steel bar is bent by the pressure of the pressing member 101 and the pressing member 101 is reset accordingly, the external hydraulic rod connected to the movable push plate 306 can be started again. As the movable push plate 306 moves again, the second connecting rod 311 fixedly connected to the limit block 314 will contact the inner wall of the first storage groove 102 away from the loading box 2. Since the limit block 314 is softly connected to the first sliding groove 313 by the first spring 315, when the second connecting rod 311 is After contacting the inner wall of the pressing member 101, the second connecting rod 311 will shrink toward the inside of the first sliding groove 313, thereby driving the limiting block 314 to slide in the first sliding groove 313 toward the loading box 2. When the limiting block 314 slides, since the connecting rack 310 is limited by the limiting block 314 and a second spring 317 is provided between the connecting rack 310 and the second sliding groove 316, the connecting rack 310 will also slide toward the upper material box 2 under the restoring elastic force of the second spring 317.

[0068] The reset of the connecting rack 310 will also pass through the two bending blocks 303 in sequence and mesh with the second connecting gear 309 on the two bending blocks 303 again. It should be noted that at this time, the pressing member 101 has completed the separation from the steel bar, and the bending block 303 that is twisted has also been reset under the reset elastic force of the torsion spring, so that the second connecting gear 309 that follows the twisting of the bending block 303 is also reset accordingly, so that it can mesh with the connecting rack 310 again, but this time the meshing direction is opposite to the first meshing direction, so the two moving clamps 304 will also be reset due to this reverse meshing. Through this setting, the moving clamp 304 can release the positioning clamping with the steel bar, so that when the connecting bottom plate 301 is flipped later, the bent steel bar can complete the unloading work smoothly.

[0069] At the same time, since the third connecting rod 318 is fixedly connected to the movable push plate 306, when the movable push plate 306 moves again, the third connecting rod 318 will also move synchronously, and a connecting hole 113 is also opened on the surface of the side of the inspection platform 1 away from the loading box 2, and an air bag 108 is arranged inside the connecting hole 113, so that when the third connecting rod 318 moves again, the third connecting rod 318 will be inserted into the connecting hole 113 and squeeze the air bag 108 accordingly;

[0070] Since the first storage cavity 109 and the second storage cavity 110 are provided on the inner wall of the testing platform 1, and one end of the air pipe connected to the airbag 108 is arranged inside the second storage cavity 110, when the airbag 108 is squeezed, the gas inside it will be transported to the second storage cavity 110 through the corresponding air pipe, and the gas will press the piston plate 112 sliding inside the second storage cavity 110 to move downward accordingly;

[0071] When the piston plate 112 moves downward, at this time, since one end of the pull rope 107 is connected to the top surface of the piston plate 112, and the other end of the pull rope 107 is fixedly set on the limit rod 105, and the limit rod 105 is fixedly set on the limit plate 104, the limit plate 104 will rotate accordingly when the pull rope 107 pulls;

[0072] It should be noted that, since the connecting bottom plate 301 is rotatably connected to the first storage slot 102 through the corresponding rotating rod and the torsion spring, the connecting bottom plate 301 should be reset accordingly by the reset elastic force of the torsion spring. However, since a limiting platform 106 is provided inside the first storage cavity 109, and a limiting contact is formed between the limiting platform 106 and the limiting rod 105, when the connecting bottom plate 301 is reset and rotated under the reset action of the torsion spring, the contact limit between the limiting rod 105 and the limiting platform 106 is used. Therefore, the connecting bottom plate 301, which should be completely reset, can only be reset. The connecting bottom plate 301 that is halfway restored is in a horizontal state at this time. Therefore, when the pull rope 107 pulls the limit rod 105 to rotate, the limit plate 104 will also drive the rotating rod and the torsion spring to rotate again. At this time, the torsion spring is in a maximum compression state, and due to the rotation of the rotating rod, the connecting bottom plate 301 will also be turned over accordingly. Therefore, the steel bars inside the bending block 303 above the connecting bottom plate 301 will also complete the corresponding unloading work through this turning after the positioning clamping is released. This setting also facilitates the separation of the steel bars, so that the bent steel bars can be unloaded quickly.

[0073] It should be noted that when the third connecting rod 318 releases the squeezing of the airbag 108, the gas injected into the second storage cavity 110 will return to the airbag 108 again, and the piston plate 112 can be quickly reset by the reset elastic force of the connecting spring 111, so the limit rod 105 pulled by the pull rope 107 will return to the initial contact limit state with the limit platform 106, and the connecting bottom plate 301 will return to the horizontal state from deflection. This setting is to ensure that subsequent detection can be carried out smoothly.

[0074] according to Figure 5It can be seen that the position of the bending block 303 is not at the center of the connecting bottom plate 301, but is biased to the side where the connecting side plate 302 is set. This setting is because the connecting bottom plate 301 is in a horizontal state due to the contact limit between the limit rod 105 and the limit platform 106, but the limit plate 104 is rotated to the maximum compression direction of the torsion spring without setting a corresponding restriction. If the bending block 303 is located at the center of the connecting bottom plate 301, when the pressing member 101 presses the steel bar, it is very likely that the connecting bottom plate 301 will deflect to the maximum compression direction of the torsion spring after being stressed because no corresponding restriction is set. This situation will cause the bending block 303 to deflect prematurely, thereby causing the contact between the steel bar and the pressing member 101 to deviate, which not only affects the detection but also causes corresponding dangers. When the bending block 303 is set on the side close to the connecting side plate 302, Fig.11 As can be seen from the figure, at this time, the bending block 303 is biased toward the limiting platform 106. Through this eccentric setting, the pressure of the pressing member 101 will act on the side close to the connecting side plate 302, that is, on the biased limiting platform 106. However, due to the limitation of the limiting rod 105 and the limiting platform 106, a stable support is provided for the connecting bottom plate 301 to maintain the stability of the connecting bottom plate 301 during the bending process of the steel bar, so the connecting bottom plate 301 will not be able to deflect. Therefore, this setting will also avoid the occurrence of the above situation.

[0075] It should be noted that, since the first connecting rod 307 is arranged below the bending block 303, when the bending block 303 rotates following the connecting bottom plate 301, it will inevitably contact the first connecting rod 307. If a fixed connection is formed between the first connecting rod 307 and the movable push plate 306, the first connecting rod 307 is likely to affect the flipping of the bending block 303. Fig.12 It can be seen that an arc block is provided at one end of the first connecting rod 307 close to the movable push plate 306, and the arc block is rotatably arranged inside the arc groove 322 provided on the movable push plate 306. With this arrangement, if the bending block 303 contacts the first connecting rod 307 when flipping, the first connecting rod 307 will rotate to a certain extent with the bending block 303 to avoid being stuck. Moreover, with the arrangement of the arc spring 323, when the bending block 303 is reset, the first connecting rod 307 can also be reset accordingly by the reset elastic force of the arc spring 323.

[0076] Through the above-mentioned arrangement, not only can the positioning clamping state of the steel bar be released, but also the connecting bottom plate 301 can be deflected accordingly while releasing the clamping state, so that the steel bar to be tested can achieve the corresponding material discharge effect through the deflection of the connecting bottom plate 301.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A steel bar bending strength testing device, comprising a testing platform (1), a loading box (2) and a positioning assembly (3), characterized in that: The testing platform (1) is used to perform bending testing on steel bars. A pressing member (101) is further arranged above the testing platform (1). The pressing member (101) is used to perform bending processing on the steel bars to be tested. A first storage slot (102) and a second storage slot (103) are respectively provided inside the testing platform (1). A positioning component (3) is provided inside the first storage slot (102). A loading box (2) is provided inside the second storage slot (103). The loading box (2) is used to place the steel bars to be tested for bending. The positioning component (3) is used to clamp and position the steel bars to be tested for bending and to perform subsequent unloading processing. The connecting bottom plate (301) in the positioning assembly (3) is rotatably arranged inside the first storage slot (102), and two bending blocks (303) are symmetrically arranged on the top surface of the connecting bottom plate (301), and the bending blocks (303) are rotatably arranged on the connecting side plate (302) through corresponding rotating rods and torsion springs, and the connecting side plate (302) is fixedly installed on the top table of the connecting bottom plate (301); A movable screw rod (305) is rotatably arranged inside each bending block (303), and a movable clamping plate (304) is sleeved on the movable screw rod (305), and a threaded connection is formed between the movable clamping plate (304) and the movable screw rod (305), and a receiving slot (319) is also provided inside each bending block (303), and one end of the movable screw rod (305) is movably arranged inside the receiving slot (319); A first connecting gear (308) and a second connecting gear (309) are respectively arranged inside the receiving slot (319), the first connecting gear (308) and the second connecting gear (309) are meshed with each other, the first connecting gear (308) is fixedly sleeved on the moving screw rod (305), and the second connecting gear (309) is rotatably arranged on the inner wall of the receiving slot (319) through a corresponding rotating rod; A first connecting rod (307) and a third connecting rod (318) are respectively arranged below the bending block (303); a first sliding groove (313) and a second sliding groove (316) are respectively arranged on the first connecting rod (307); one end of the third connecting rod (318) is fixedly connected to the movable push plate (306); one end of the first connecting rod (307) is rotatably arranged on the movable push plate (306); and the movable push plate (306) is slidably arranged inside the second storage groove (103); A connecting rack (310) is slidably disposed inside the second sliding groove (316), and a meshing connection is formed between the connecting rack (310) and a second connecting gear (309) disposed inside the bending block (303), and a second spring (317) is also disposed between the connecting rack (310) and the second sliding groove (316), a limit block (314) is slidably disposed inside the first sliding groove (313), and a first spring (315) is disposed between the limit block (314) and the first sliding groove (313); The upper end of the limit block (314) is also slidably arranged inside the limit groove (312), and the limit groove (312) is opened on the bottom surface of the connecting rack (310), and the side surface of the limit block (314) connected to the first spring (315) is also fixedly connected to one end of the second connecting rod (311), and the first spring (315) is sleeved on the second connecting rod (311), and as the movable push plate (306) moves, the second connecting rod (311) fixedly connected to the limit block (314) can contact the inner wall of the first storage groove (102) away from the loading box (2); The loading box (2) has an accommodating chamber (201) formed inside, and a movable inclined surface (202) is provided on the bottom surface of the accommodating chamber (201). A pushing plate (204) is also movably provided inside the loading box (2), and a connecting rod (207) is fixedly connected to the bottom of the pushing plate (204); The connecting rod (207) is also fixedly connected to two connecting slide rods (208), the connecting slide rods (208) are slidably arranged inside the connecting inclined groove (203), the connecting inclined groove (203) is opened at the inner walls of both sides of the loading box (2), the pushing plate (204) is also opened with a receiving groove (206), a partition plate (205) is arranged inside the receiving groove (206), the partition plate (205) is rotatably arranged inside the receiving groove (206) through a corresponding rotating rod and a torsion spring, when the movable pushing plate (306) is in the initial position, it is located at the end of the loading box (2) away from the first storage groove (102), and the side surface of the pushing plate close to the bending block (303) is in contact with the connecting rod (207); A connecting hole (113) is provided on the inner wall of the side of the inspection platform (1) away from the loading box (2), and an air bag (108) is provided inside the connecting hole (113). The third connecting rod (318) can be inserted into the connecting hole (113) and squeeze the air bag (108) accordingly. A first storage cavity (109) and a second storage cavity (110) are provided on the side of the first storage groove (102) away from the loading box (2), and one end of the air pipe connected to the air bag (108) is provided inside the second storage cavity (110); A limit plate (104) and a limit platform (106) are arranged inside the first storage cavity (109); the limit platform (106) is fixedly arranged inside the first storage cavity (109); a fixed connection is formed between the limit plate (104) and a rotating rod connected to the connecting bottom plate (301); a limit rod (105) is also fixedly arranged on the limit plate (104); a limit contact is formed between the limit platform (106) and the limit rod (105); one end of a pull rope (107) is fixedly connected to the limit rod (105); the other end of the pull rope (107) is fixedly arranged on a piston plate (112); the piston plate (112) is slidably arranged inside the second storage cavity (110); and a connecting spring (111) is also arranged between the piston plate (112) and the second storage cavity (110).

2. A steel bar bending strength detection device according to claim 1, characterized in that: The movable push plate (306) is provided with an arc-shaped groove (322) at a position corresponding to the first connecting rod (307), and the first connecting rod (307) is rotatably arranged inside the arc-shaped groove (322) through a corresponding arc-shaped block, and an arc-shaped spring (323) is arranged between the arc-shaped groove (322) and the corresponding arc-shaped block; The movable push plate (306) is also provided with a connecting groove (320), and one end of the movable push plate (306) close to the bending block (303) is provided with two connecting flaps (321), and the two connecting flaps (321) are rotatably connected to the movable push plate (306) via corresponding torsion springs and rotating rods.

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