A rolled bar strength detection device

Abstract

The application discloses a kind of steel bar strength detection equipment, belong to detection equipment technical field, including machine table component, frame plate assembly, clamping plate assembly and column rod assembly, the bottom plate middle part of main machine table is equipped with lower pressing disc, two groups of side frame plate are slidably arranged on the surface of bottom plate, the end of side frame plate is fixed with closure plate, side support is fixed to the end of side frame plate, Y-shaped rod is slidably assembled thereon, sleeve shell is fixed to one end of side frame plate, telescopic slide shaft is elastically inserted into sleeve shell and is connected with Y-shaped rod, the automatic centering of sample is realized by Y-shaped rod, the uniformity of sample centering stress is ensured, the physical isolation of different batches of samples is simultaneously realized, the step of manual classification is saved, sample mixing is avoided, by the automatic inclination and horizontal conversion of feed flow channel, cooperate with automatic sequencing and successive feeding, continuous detection can be automatically completed, the frequency of manual intervention and operation complexity are greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of testing equipment technology, specifically relating to a strength testing device for rolled steel bars. Background Technology

[0002] Strength testing of rolled steel bars typically employs a universal testing machine or a hydraulic press to perform uniaxial compression or tensile tests on short samples cut from the bars.

[0003] Existing sample testing equipment relies heavily on manual operation for sample loading, positioning, centering, testing, and fragment recovery. This is prone to human error, which can lead to sample confusion, affecting the accuracy of test results. After testing, residual fragments can remain on the pressure-bearing surface, causing uneven placement of subsequent samples, which in turn can lead to force eccentricity and measurement distortion.

[0004] During testing, sample breakage and fragmentation are common, posing safety hazards and increasing the difficulty of collecting debris. When testing multiple samples continuously, frequent manual loading and unloading of samples is required, which can easily lead to sample mixing and misordering, resulting in low overall testing efficiency. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a steel bar strength testing device to solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A steel bar strength testing device includes a machine base component, which includes a main machine base, a table surface, and a base plate. The table surface is mounted on the main machine base, and the base plate is fixedly arranged on the table surface. A central plate hole is provided in the middle of the base plate, and a lower pressure plate is positioned and mounted in the central plate hole. The lower pressure plate is used to support the steel bar sample to be tested. The frame assembly includes a side frame plate, a side push plate, and a closing plate. Both sets of side frame plates are slidably arranged on the surface of the base plate, and the movement direction of the side frame plates is the same as the feeding direction of the rolled steel bar sample. A side push plate is fixedly assembled at the bottom of the side frame plate, and a closing plate is vertically arranged at one end of the side frame plate and fixedly connected to the side frame plate. The clamping plate assembly includes a side bracket and a Y-shaped rod. The side bracket is fixedly assembled to the end of the side frame plate, and the Y-shaped rod is slidably assembled on the side bracket. The two sets of Y-shaped rods are used to center the rolled steel bar sample to be tested. The column assembly includes a sleeve housing and a telescopic sliding shaft. Two sets of sleeve housings are respectively fixedly assembled to one end of the side frame plate. The telescopic sliding shaft is elastically slidably inserted into the sleeve housing and is linked with the Y-shaped rod to control the extension and retraction of the two sets of Y-shaped rods.

[0007] As a further embodiment of the present invention, the steel bar strength testing equipment further includes a pressure testing component, which includes guide columns, an upper die frame, a blanking die frame, a column head, and an upper pressure plate. Several guide columns are fixedly assembled on the base plate, the upper die frame is fixed to the top of the guide columns, the blanking die frame is slidably arranged on the guide columns, and a column head is fixedly assembled at the bottom of the blanking die frame. An upper pressure plate is provided at the bottom of the column head. Several sliding rods are also arranged at the bottom of the blanking die frame, and the cover is elastically slidably assembled on the sliding rods and covers the outside of the upper pressure plate.

[0008] As a further embodiment of the present invention, the frame assembly further includes a guide groove and a pressure plate. The bottom of the closed plate is provided with an inclined guide groove, the pressure plate is slidably fitted in the guide groove, and a bushing rod is slidably provided at one end of the pressure plate.

[0009] As a further embodiment of the present invention, the frame assembly further includes a guide rail, a slide, a support, and a driver. The guide rail is fixedly mounted on the base plate, one end of the slide is slidably mounted on the guide rail, and the other end of the slide is fixedly connected to the support. One end of the driver is fixedly mounted on the support, and the other end of the driver is fixedly mounted on the side frame.

[0010] As a further embodiment of the present invention, the clamping plate assembly further includes a guide post, a push plate, a guide shaft, and a slide. The guide post is fixedly mounted on the side support. One end of the push plate is slidably inserted into the guide post, and the other end of the push plate is fixedly mounted with a guide shaft. The slide is elastically slidably mounted on the guide shaft, and a Y-shaped rod is provided at the end of the slide.

[0011] As a further embodiment of the present invention, the clamping plate assembly further includes a separating plate, a transmission device, and a pin. The separating plate is fixedly arranged at one end of the side bracket and close to the Y-shaped rod. The transmission device is rotatably mounted on the side bracket. The two ends of the transmission device are respectively provided with a front sliding groove and a rear sliding groove. The pin is fixedly arranged on the push plate and slidably assembled in the rear sliding groove.

[0012] As a further embodiment of the present invention, the column assembly further includes an abutment, an inner rod, and an L-shaped tail rod. The telescopic sliding shaft is slidably assembled in the sleeve shell, and one end of the telescopic sliding shaft is provided with an abutment, and the other end of the telescopic sliding shaft is provided with an inner rod. The end of the inner rod is rotatably connected to an L-shaped tail rod, and the L-shaped tail rod is slidably arranged in the front sliding groove.

[0013] As a further embodiment of the present invention, the column assembly further includes a protruding rod, a transmission arm, a spiral groove, and an elastic element. The telescopic sliding shaft is also fixedly provided with a protruding rod, and a transmission arm is rotatably connected to the protruding rod. The transmission arm is elastically slidably sleeved on the bushing rod. The spiral groove is spirally arranged on the cylindrical surface of the sleeve shell. The elastic element is assembled in the cavity of the sleeve shell. The protruding rod is limited and slidably assembled in the spiral groove, and one end of the telescopic sliding shaft elastically abuts against the elastic element.

[0014] As a further embodiment of the present invention, the steel bar strength testing equipment further includes a feeding plate assembly, which includes a feeding channel, a top support, an inclined pressure surface, and a limiting hole. The feeding channel is rotatably installed at one end of the base plate to support multiple steel bar samples to be tested. A top support is provided at one bottom end of the feeding channel, and the top support is movably pressed against the platform of the base plate. An inclined pressure surface is also provided at the bottom of the feeding channel. The clamping plate assembly further includes a tail bracket and a lifting shaft. The tail bracket is fixedly assembled on one side of the side bracket, and a lifting shaft is provided at its bottom. The lifting shaft slides against the inclined pressure surface. The feeding plate assembly also includes a limiting hole, which is arranged on the surface of the feeding channel. The machine base component also includes a protruding column, which is fixedly arranged on the main machine base and passes through the limiting hole to restrict the sliding of the steel bar samples on the surface of the feeding channel.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention effectively prevents the sample from breaking and flying off, causing injury, by forming a physical isolation layer during testing, and avoids the scattering of fragments, eliminating the need for manual collection. At the same time, the Y-shaped rod has a self-centering function, which can ensure that the sample axis is aligned and the force is uniform, avoiding the sample tilting due to residual fragments. This improves the detection accuracy and reduces the risk of measurement distortion. Furthermore, the test samples and fragments can be pushed into the recycling tank as a whole after testing, and the stepping rotation function of the disc-shaped cavity shell can be used to make different batches of samples fall into independent chambers automatically, achieving physical isolation, eliminating manual loading, unloading and sorting steps, avoiding sample mixing or mis-taking, and improving batch testing efficiency. Furthermore, it enables automatic sample sorting, separation, and sequential feeding. By tilting and leveling the feed channel, and with the separation plate blocking excess samples, it completes sample replacement and synchronous centering within a continuous cycle. No external independent control is required, enabling automatic continuous detection and reducing the frequency of manual intervention and operational complexity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0017] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the pressure testing component in one embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of a machine tool component in one embodiment of the present invention.

[0020] Figure 5This is a schematic diagram of the feeding direction according to one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the feeding plate assembly in one embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of the machine tool components and the feeding plate assembly in one embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of the frame assembly in one embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the frame assembly from another perspective in one embodiment of the present invention.

[0025] Figure 10 This is a schematic diagram of the clamping plate assembly in one embodiment of the present invention.

[0026] Figure 11 This is a schematic diagram of the column assembly in one embodiment of the present invention.

[0027] Figure 12 This is an exploded structural diagram of the column assembly in one embodiment of the present invention.

[0028] Figure label: Machine components, 101-Main machine platform, 102-Tabletop, 103-Disc-shaped cavity shell, 104-Protruding column, 105-Base plate, 106-Centered disc hole, 107-Recovery tank, 108-Lower pressure plate; Pressure testing components, 201-guide post, 202-upper mold frame, 203-discharge mold frame, 204-column head, 205-upper pressure plate, 206-slide rod, 207-cover net; Frame assembly, 301-side frame plate, 302-side push plate, 303-closing plate, 304-guide groove, 305-base plate, 306-shaft sleeve rod, 307-guide rail, 308-slide table, 309-support, 310-driver; Clamping plate assembly, 401-side bracket, 402-tail bracket, 403-lifting shaft, 404-guide column, 405-push plate, 406-guide shaft, 407-slide carriage, 408-Y-shaped rod, 409-separation plate, 410-transmission device, 411-front slide groove, 412-rear slide groove, 413-pin; Column assembly, 501-sleeve housing, 502-telescopic sliding shaft, 503-butt joint, 504-inner rod, 505-L-shaped tail rod, 506-protruding rod, 507-transmission arm, 508-spiral groove, 509-elastic element; Feeding plate assembly, 601-feeding channel, 602-top support, 603-sloping pressure surface, 604-limiting hole. Detailed Implementation

[0029] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please see Figures 1-12 According to one embodiment of the present invention, a steel bar strength testing device has a first direction x, a second direction y, and a third direction z. The steel bar strength testing device includes a machine base component 1, which includes a main machine base 101, a table surface 102, and a base plate 105. The table surface 102 is mounted on the main machine base 101, and the base plate 105 is fixedly arranged on the table surface 102. A central plate hole 106 is provided in the middle of the base plate 105, and a lower pressure plate 108 is positioned and assembled in the central plate hole 106. The lower pressure plate 108 is used to support the steel bar sample to be tested. A support plate assembly 3 includes side support plates 301, side push plates 302, and a closing plate 303. Both sets of side support plates 301 are slidably arranged on the surface of the base plate 105, and the movement direction of the side support plates 301 is relative to the direction of movement of the bottom plate 105. The feeding direction of the rolled steel bar samples is the same. A side push plate 302 is fixedly assembled at the bottom of the side frame plate 301. A closing plate 303 is vertically arranged at one end of the side frame plate 301 and fixedly connected to the side frame plate 301. The clamping plate assembly 4 includes a side support 401 and a Y-shaped rod 408. The side support 401 is fixedly assembled at the end of the side frame plate 301, and the Y-shaped rod 408 is slidably assembled on the side support 401. The two sets of Y-shaped rods 408 are used to center the rolled steel bar samples to be tested. The column rod assembly 5 includes a sleeve shell 501 and a telescopic sliding shaft 502. The two sets of sleeve shells 501 are respectively fixedly assembled at one end of the side frame plate 301. The telescopic sliding shaft 502 is elastically slidably inserted into the sleeve shell 501 and is linked with the Y-shaped rod 408 to control the extension and retraction of the two sets of Y-shaped rods 408.

[0031] In practical application, when the strength of rolled steel bars is tested using this device, a base plate 105 is mounted on the platform 102. A central disc hole 106 is provided in the middle of the base plate 105. The lower pressure plate 108 is fixed in the main platform 101 and positioned in the central disc hole 106. The bearing surface of the lower pressure plate 108 is kept horizontal with the upper surface of the base plate 105. The lower pressure plate 108 is used to center and support the rolled steel bar sample column to be tested, so as to ensure that the sample axis is centered and the force is uniform during the compression process. A recovery tank 107 is also provided on one side of the central disc hole 106. The recovery tank 107 is used to recover the sample body and sample fragments after testing, so as to avoid the residue from interfering with the subsequent testing process. The side frame plate 301 is slidably mounted on the base plate 105 along the x-axis direction. The movement direction of the side frame plate 301 is consistent with the feeding direction of the rolled steel bar sample to realize the directional transfer of the sample after the test is completed. The side push plate 302 at the bottom of the side frame plate 301 has the function of moving along the y-axis direction. After the test is completed, it can push the sample fragments on the lower pressure plate 108 from both sides along the y-axis direction to the center of the lower pressure plate 108, and concentrate the sample fragments scattered on the edge of the pressure surface to the middle area of ​​the lower pressure plate 108, which is convenient for subsequent overall pushing. When the two sets of side frame plates 301 approach each other, the two sets of closing plates 303 press and stick together to form a closed pushing surface to prevent the sample or fragments from being missed during the transfer process. When the side frame plate 301 moves along the positive x-axis, the two sets of closed plates 303 can simultaneously push the sample and sample fragments on the lower pressure plate 108 into the recovery tank 107, so that the samples belonging to the same rolled steel bar can be recovered as a whole after the strength test is completed, and further realize the centralized recovery of batch samples. The bottom of the recovery tank 107 is provided with a disc-shaped cavity shell 103. The disc-shaped cavity shell 103 has several independent chambers inside, which can automatically follow the pushing action of the side frame plate 301 to rotate. Specifically, after each pushing operation, the disc-shaped cavity shell 103 rotates one chamber position step by step at a preset angle, so that the samples pushed into the recovery tank 107 fall into different chambers in sequence under the action of gravity, thereby realizing the physical isolation between samples of different batches or different testing sequences, so as to avoid sample mixing, save the tedious steps of manual loading and unloading, improve testing efficiency, and reduce the risk of sample confusion or mis-taking caused by manual operation. The disc-shaped cavity shell 103 can be driven by a reducer, which is an existing technology and will not be described in detail here.

[0032] Please see Figure 3 In a preferred embodiment of the present invention, the steel bar strength testing equipment further includes a pressure testing component 2, which includes guide posts 201, an upper die frame 202, a blanking die frame 203, a column head 204, and an upper pressure plate 205. Several guide posts 201 are fixedly assembled on the base plate 105, the upper die frame 202 is fixed to the top of the guide posts 201, the blanking die frame 203 is slidably arranged on the guide posts 201, and a column head 204 is fixedly assembled at the bottom of the blanking die frame 203. The upper pressure plate 205 is provided at the bottom of the column head 204. Several sliding rods 206 are also arranged at the bottom of the blanking die frame 203, and a cover net 207 is elastically slidably assembled on the sliding rods 206 and covers the outside of the upper pressure plate 205. The diameter of the cover net 207 is smaller than the diameter of the lower pressure plate 108.

[0033] In practical application, the guide post 201 is fixedly mounted on the base plate 105. A hydraulic unit is installed on the top of the upper mold frame 202. The drive shaft of the hydraulic unit is fixedly connected to the blanking mold frame 203 to control the lifting and lowering movement of the blanking mold frame 203 in the z-axis direction. An upper pressure plate 205 is mounted on the column head 204 at the bottom of the blanking mold frame 203. The upper pressure plate 205 and the lower pressure plate 108 are coaxially arranged to apply axial load to the rolled steel bar sample to perform a pressure test. When the upper pressure plate 205 moves downward in the negative z-axis direction, the bottom of the cover net 207 preferentially abuts against the upper surface of the lower pressure plate 108, and as the upper pressure plate moves downward... As the upper pressure plate 205 continues to descend, the cover 207 is elastically pressed onto the lower pressure plate 108, forming a cylindrical physical isolation layer around the sample. This isolation layer can prevent injury to personnel caused by sample breakage and flying during the test, and also prevent fragments from scattering to the outside area of ​​the equipment, eliminating the need for manual collection of scattered fragments. When the upper pressure plate 205 rises upward along the positive z-axis and gradually moves away from the sample that has been tested, the cover 207 moves upward synchronously with the unloading mold 203 and detaches from the lower pressure plate 108, so that all samples and their generated fragments are retained on the upper surface of the lower pressure plate 108, facilitating subsequent centralized cleaning and recycling.

[0034] Please see Figure 8 In a preferred embodiment of the present invention, the frame assembly 3 further includes a guide groove 304 and a pressure plate 305. The bottom of the closed plate 303 is provided with an inclined guide groove 304. The pressure plate 305 is slidably fitted in the guide groove 304, and a bushing rod 306 is slidably provided at one end of the pressure plate 305. The bushing rod 306 is axially slidably installed on one side of the 305.

[0035] In practical application, according to the inclined guide groove 304 provided at the bottom of the closed plate 303, the pressure plate 305 is slidably assembled in the guide groove 304, so that the bushing rod 306 on one side of the pressure plate 305 slides along the inclined guide direction of the guide groove 304 under the action of external force. During the sliding process, the bottom of the pressure plate 305 is pressed tightly against the upper surface of the base plate 105. Since the lower pressure plate 108 and the base plate 105 maintain a horizontal reference state, during the continuous advancement of the pressure plate 305 along the guide groove 304, its bottom edge can push the sample and its residual fragments on the lower pressure plate 108 into the recycling tank 107, realizing the automatic removal and collection of debris. This can effectively avoid fine particles or powdery fragments remaining on the surface of the lower pressure plate 108, prevent subsequent samples from being placed directly on the residual fragments, avoid the overall tilting of the sample due to the fragments being raised, and further avoid the decrease in detection accuracy and / or measurement distortion caused by the deviation of the force angle.

[0036] Please see Figure 9In a preferred embodiment of this embodiment, the shelf assembly 3 further includes a guide rail 307, a slide table 308, a support 309, and a driver 310. The guide rail 307 is fixedly mounted on the base plate 105. One end of the slide table 308 is slidably mounted on the guide rail 307, and the other end of the slide table 308 is fixedly connected to the support 309. One end of the driver 310 is fixedly arranged on the support 309, and the other end of the driver 310 is fixedly mounted on the side shelf 301.

[0037] In practical application, the guide rail 307 is fixedly mounted on the upper surface of the base plate 105, the slide table 308 is slidably arranged on the guide rail 307 in the horizontal direction, and one end of the support 309 is fixedly assembled to the upper surface of the slide table 308 by fasteners. The support 309 is also equipped with a driver 310. The axis of the movable shaft of the driver 310 is collinear with the mounting surface of the side frame plate 301, and the end of the movable shaft of the driver 310 is fixedly connected to the side frame plate 301. At the same time, a limiting rod is also provided at one end of the side frame plate 301, and the limiting rod is inserted into the support 309 along the direction of the movable shaft. The guide hole allows the driver 310 to drive the side frame plate 301 to achieve precise linear reciprocating motion along the y-axis during the extension and retraction process. The base plate 105 is also provided with a strip-shaped through groove, the extension direction of which is parallel to the x-axis. The servo motor is installed in the internal cavity of the main unit 101. A transmission rod is connected to the shaft head of the servo motor. After passing through the strip-shaped through groove, the transmission rod is fixedly connected to the bottom of the support 309. It is used to control the support 309 to perform linear feed motion along the x-axis under the drive of the servo motor, thereby adjusting the independent movement of the side frame plate 301 in both the x-axis and y-axis directions.

[0038] Please see Figure 10 In a preferred embodiment of the present invention, the clamping plate assembly 4 further includes a guide post 404, a push plate 405, a guide shaft 406, and a slide 407. The guide post 404 is fixedly arranged on the side support 401. One end of the push plate 405 is slidably inserted into the guide post 404, and the other end of the push plate 405 is fixedly arranged with the guide shaft 406. The slide 407 is elastically slidably assembled on the guide shaft 406, and a Y-shaped rod 408 is provided at the end of the slide 407.

[0039] In practical application, the guide post 404 is fixedly arranged on one side of the side bracket 401, the push plate 405 is slidably mounted on the guide post 404, and the slide 407 is installed on the guide shaft 406 provided on one side of the push plate 405 by elastic sliding assembly. When the push plate 405 continuously feeds towards the rolled steel bar sample to be tested along the y-axis direction, the Y-shaped rod 408 at the end of the slide 407 is pressed into the outer diameter surface of the sample. The Y-shaped rods 408 are symmetrically arranged on both sides. Under the combined radial compressive force, the sample is guided and positioned at the center of the two sets of side plates 301. The Y-shaped rod 408 uses its V-shaped structure to apply a self-centering effect to the columnar sample, so that the axis of the sample automatically coincides with the symmetrical center line of the two side plates 301. This ensures that when the side plates 301 move linearly along the x-axis, the sample can be accurately pushed to the center of the lower pressure plate 108, thereby ensuring that the sample, the lower pressure plate 108 and the upper pressure plate 205 remain concentric.

[0040] Please see Figure 10 In a preferred embodiment of the present invention, the clamping plate assembly 4 further includes a separating plate 409, a transmission device 410, and a pin 413. The separating plate 409 is fixedly arranged at one end of the side bracket 401 and close to the Y-shaped rod 408. The transmission device 410 is rotatably mounted on the side bracket 401. The two ends of the transmission device 410 are respectively provided with a front sliding groove 411 and a rear sliding groove 412. The pin 413 is fixedly arranged on the push plate 405 and slidably assembled in the rear sliding groove 412.

[0041] In practical application, the separation plate 409 is fixedly arranged on one side of the side support 401 and adjacent to the Y-shaped rod 408. A single sample is accommodated between the two sets of Y-shaped rods 408. When the two sets of side support plates 301 approach each other along the x-axis and the two sets of closing plates 303 are in contact with each other along the x-axis, the separation plate 409 can be inserted into the gap between the two adjacent samples along the y-axis, thereby effectively blocking the other sample from the clamping area and preventing it from sliding into the area covered by the Y-shaped rod 408, thus avoiding interference with the sample currently being centered and clamped. The transmission device 410 is rotatably mounted on the side bracket 401. The front sliding groove 411 and the rear sliding groove 412 at both ends of the transmission device 410 are slidably connected to the L-shaped tail rod 505 and the pin 413, respectively, so that when the L-shaped tail rod 505 moves along the y-axis, it synchronously drives the transmission device 410 to rotate around its own rotation axis. During the rotation, the transmission device 410 further drives the pin 413 to generate sliding displacement along the y-axis, thereby controlling the linear movement of the push plate 405 in the y-axis direction. When the Y-shaped rod 408 is pressed against the sample surface and reaches the initial contact state, the push plate 405 can continue to move along the y-axis by further increasing the compression of the spring, thereby increasing the elastic potential energy of the spring and causing the pressure applied to the Y-shaped rod 408 to continue to rise until the preset clamping force level is reached, thus realizing the stable clamping and self-centering function of the sample.

[0042] Please see Figure 11 In a preferred embodiment of the present invention, the column assembly 5 further includes an abutment 503, an inner rod 504, and an L-shaped tail rod 505. The telescopic sliding shaft 502 is slidably assembled in the sleeve shell 501, and one end of the telescopic sliding shaft 502 is provided with an abutment 503, and the other end of the telescopic sliding shaft 502 is provided with an inner rod 504. The end of the inner rod 504 is rotatably connected to the L-shaped tail rod 505, and the L-shaped tail rod 505 is slidably arranged in the front sliding groove 411.

[0043] In practical application, when the two sets of side frame plates 301 move in opposite directions in the y-axis direction, the abutment joints 503 at the ends of the two sets of telescopic sliding shafts 502 always remain in contact, thereby forming a limiting constraint in the x-axis direction. This effectively prevents the sample from sliding directly to one side of the lower pressure plate 108 when the side frame plates 301 are in the open or closed state, forming a layer of safety protection to prevent the two sets of samples from sliding onto the surface of the lower pressure plate 108 at the same time, thereby avoiding dangerous conditions caused by sample stacking or misalignment during the pressure test. The other end of the telescopic sliding shaft 502 is fixedly connected to an inner rod 504. An L-shaped tail rod 505 is rotatably mounted at the end of the inner rod 504. The L-shaped tail rod 505 is slidably fitted in the front slide groove 411, so that when the telescopic sliding shaft 502 and the inner rod 504 move along the y-axis, the L-shaped tail rod 505 can synchronously drive the transmission device 410 to generate rotational motion.

[0044] Please see Figure 11 and Figure 12In a preferred embodiment of the present invention, the column assembly 5 further includes a protruding rod 506, a transmission arm 507, a spiral groove 508, and an elastic element 509. The telescopic sliding shaft 502 is also fixedly provided with the protruding rod 506, and the transmission arm 507 is rotatably connected to the protruding rod 506. The transmission arm 507 is elastically slidably sleeved on the bushing rod 306. The spiral groove 508 is spirally arranged on the cylindrical surface of the sleeve shell 501. The elastic element 509 is assembled in the cavity of the sleeve shell 501. The protruding rod 506 is limited and slidably assembled in the spiral groove 508, and one end of the telescopic sliding shaft 502 elastically abuts against the elastic element 509.

[0045] In practical application, the outer diameter end of the telescopic sliding shaft 502 is fixedly fitted with a protruding rod 506, which is slidably fitted into the spiral groove 508. When the two sets of side frame plates 301 move in a direction that brings them closer to each other, the two sets of abutment joints 503 press against each other, thereby forcing the telescopic sliding shaft 502 to axially contract relative to the sleeve shell 501. Since the protruding rod 506 is slidably arranged in the spiral groove 508, the telescopic sliding shaft 502 generates a rotational motion around its own axis while axially retracting, and simultaneously compresses the elastic element 509. A transmission arm 507 is rotatably mounted on the protruding rod 506, and the transmission arm 507 is elastic. The telescopic sliding shaft 502 is inserted into the bushing rod 306 in a sliding manner. Therefore, as the protruding rod 506 rotates around the axis with the telescopic sliding shaft 502, it can synchronously push the transmission arm 507 to produce a corresponding displacement. Then, using the spring installed between the transmission arm 507 and the bushing rod 306, the bushing rod 306 is driven to produce axial movement. This causes the pressure plate 305 on one side of the bushing rod 306 to abut against the surface of the lower pressure plate 108 in an elastic pressing manner, achieving adjustable contact pressing. The telescopic sliding shaft 502 synchronously produces reciprocating motion in the y-axis direction, further driving the L-shaped tail rod 505 connected to it to move in the same direction, thereby realizing multi-degree-of-freedom linkage.

[0046] Please see Figure 5 , Figure 6 and Figure 7In a preferred embodiment of the present invention, the steel bar strength testing equipment further includes a feeding plate assembly 6, which includes a feeding channel 601, a top support 602, an inclined pressure surface 603, and a limiting hole 604. The feeding channel 601 is rotatably mounted on one end of the base plate 105 to support multiple steel bar samples to be tested. A top support 602 is provided at one bottom end of the feeding channel 601, and the top support 602 is movably pressed against the platform of the base plate 105. An inclined pressure surface 603 is also provided at the bottom of the feeding channel 601. The clamping plate assembly... 4 also includes a tail support 402 and a lifting shaft 403. The tail support 402 is fixedly mounted on one side of the side support 401, and the lifting shaft 403 is provided at its bottom. The lifting shaft 403 slides against the inclined pressure surface 603. The feeding plate group 6 also includes a limiting hole 604. The limiting hole 604 is arranged on the surface of the feeding channel 601. The machine tool component 1 also includes a protruding post 104. The protruding post 104 is fixedly arranged on the main machine tool 101 and passes through the limiting hole 604 to limit the sliding of the rolled steel bar sample on the surface of the feeding channel 601.

[0047] In practical application, the side frame plate 301 has a feeding station and a pushing station. When the side frame plate 301 is in the feeding station, the Y-shaped rod 408 is located near one end of the feeding channel 601. At this time, several test samples are arranged on the upper surface of the feeding channel 601. Here, several test samples are set as sample a, sample b and sample c. At the same time, the lifting shaft 403 on one side of the side support 401 abuts against one end of the inclined pressure surface 603, so that the feeding channel 601 is in an inclined state, thereby driving sample a, sample b and sample c to slide towards the side where the Y-shaped rod 408 is located. The sample a at the front end abuts against the telescopic sliding shaft 502. The sample a is located between the two sets of Y-shaped rods 408. When the feeding station starts feeding, the two sets of side frame plates 301 move closer to each other along the y-axis. The side push plate 302 pushes the sample fragments on the lower pressure plate 108 to the center area of ​​the lower pressure plate 108. The two sets of telescopic sliding shafts 502 are elastically contracted along their axial direction to the inside of the two sets of sleeve shells 501 due to the pressure of the sample a. At the same time, the two sets of Y-shaped rods 408 apply elastic clamping force to the sample a, so that the sample a is stably clamped between the two sets of Y-shaped rods 408. Furthermore, the two sets of separation plates 409 are inserted into the gap between the sample a and the sample b during the movement of moving closer to each other, thereby blocking the sample b and the sample c on one side of the separation plate 409. At this time, the sample b and the sample c still remain on the upper surface of the feeding channel 601, keeping their relative positions unchanged. When the two sets of side support plates 301 move simultaneously along the positive x-axis in a fully closed state, the closing plate 303 and the pressure plate 305 work together to push the test sample and fragments carried on the lower pressure plate 108 into the recovery tank 107. At the same time, the sample a, which is centered and clamped between the two sets of Y-shaped rods 408, slides to one side of the lower pressure plate 108 in sync with the side support plates 301. The side support 401 drives the tail support 402 and the lifting shaft 403 to move synchronously. When the lifting shaft 403 moves along the positive x-axis, its supporting effect on one side of the inclined pressure surface 603 is gradually released, thereby driving the feeding channel 601 to rotate clockwise around its hinge point, so that the feeding channel 601... 01 The original inclined state is gradually changed to a horizontal state so that the protrusion 104 set on the table 102 can pass through the limiting hole 604 opened on the feeding channel 601. After the protrusion 104 passes through, it forms a physical block to prevent the sample b and sample c from continuing to move towards the bottom plate 105. When the side frame plate 301 moves to its limit position along the positive x-axis, it reaches the pushing station. At this time, the sample a is accurately clamped and sent to the center position of the lower pressure plate 108 by the Y-shaped rod 408. Then the two sets of side frame plates 301 move away from each other in opposite directions along the y-axis, releasing the clamping of the sample a, so that the sample a is placed in the center position of the lower pressure plate 108, waiting for the subsequent pressure test process. After the two sets of side support plates 301 complete the release action, they begin to move along the negative x-axis and return to the initial feeding position. During this return process, the lifting shaft 403 on one side of the tail support 402 slides and pushes against the inclined pressure surface 603 again, thereby driving the feeding channel 601 to rotate counterclockwise around its hinge point, so that the feeding channel 601 returns to the inclined state from the horizontal state. At the same time, the protrusion 104 retracts into the limiting hole 604, releasing the limiting obstruction of sample b and sample c. Sample b and sample c slide down along the feeding channel 601 synchronously under the action of gravity, so that sample b slides to the original position of sample a. At this time, one end of sample b is limited to the side of the telescopic sliding shaft 502, thus completing a complete cycle of automatic sample replacement and positioning process.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A strength testing device for rolled steel bars, characterized in that, include: The machine tool components include a main machine platform, a table surface, and a base plate. The table surface is mounted on the main machine platform, and the base plate is fixedly arranged on the table surface. A central plate hole is provided in the middle of the base plate, and a lower pressure plate is positioned and assembled in the central plate hole. The lower pressure plate is used to support the rolled steel bar sample to be tested. The frame assembly includes a side frame plate, a side push plate, and a closing plate. Both sets of side frame plates are slidably arranged on the surface of the base plate, and the movement direction of the side frame plates is the same as the feeding direction of the rolled steel bar sample. A side push plate is fixedly assembled at the bottom of the side frame plate, and a closing plate is vertically arranged at one end of the side frame plate and fixedly connected to the side frame plate. The clamping plate assembly includes a side bracket and a Y-shaped rod. The side bracket is fixedly assembled to the end of the side frame plate, and the Y-shaped rod is slidably assembled on the side bracket. The two sets of Y-shaped rods are used to center the rolled steel bar sample to be tested. The column assembly includes a sleeve housing and a telescopic sliding shaft. Two sets of sleeve housings are respectively fixedly assembled to one end of the side frame plate. The telescopic sliding shaft is elastically slidably inserted into the sleeve housing and is linked with the Y-shaped rod to control the extension and retraction of the two sets of Y-shaped rods.

2. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The steel bar strength testing equipment also includes a pressure testing component, which includes a guide column, an upper mold frame, a blanking mold frame, a column head, and an upper pressure plate. Several guide columns are fixedly assembled on the base plate, the upper mold frame is fixed to the top of the guide columns, the blanking mold frame is slidably arranged on the guide columns, and a column head is fixedly assembled at the bottom of the blanking mold frame. An upper pressure plate is provided at the bottom of the column head. The bottom of the blanking die frame is also provided with several sliding rods, and the cover net is elastically slidably assembled on the sliding rods, and the cover net covers the outside of the upper pressure plate.

3. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The frame assembly also includes a guide groove and a pressure plate. The bottom of the closed plate is provided with an inclined guide groove, and the pressure plate is slidably assembled in the guide groove. A bushing rod is also slidably provided at one end of the pressure plate.

4. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The frame assembly also includes a guide rail, a slide, a support, and a driver. The guide rail is fixedly mounted on the base plate, one end of the slide is slidably mounted on the guide rail, and the other end of the slide is fixedly connected to the support. One end of the driver is fixedly mounted on the support, and the other end of the driver is fixedly mounted on the side frame.

5. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The clamping plate assembly also includes a guide post, a push plate, a guide shaft, and a slide. The guide post is fixedly mounted on the side support. One end of the push plate is slidably inserted into the guide post, and the other end of the push plate is fixedly mounted with a guide shaft. The slide is elastically slidably assembled on the guide shaft, and a Y-shaped rod is provided at the end of the slide.

6. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The clamping plate assembly also includes a separating plate, a transmission device, and a pin. The separating plate is fixedly arranged at one end of the side bracket and close to the Y-shaped rod. The transmission device is rotatably mounted on the side bracket. The two ends of the transmission device are respectively provided with a front slide groove and a rear slide groove. The pin is fixedly arranged on the push plate and slidably assembled in the rear slide groove.

7. The strength testing equipment for rolled steel bars according to claim 6, characterized in that, The column assembly also includes an abutment, an inner rod, and an L-shaped tail rod. The telescopic sliding shaft is slidably assembled in the sleeve shell, and one end of the telescopic sliding shaft is provided with an abutment, while the other end of the telescopic sliding shaft is provided with an inner rod. The end of the inner rod is rotatably connected to an L-shaped tail rod, which is slidably positioned in the front sliding groove.

8. The strength testing equipment for rolled steel bars according to claim 3, characterized in that, The column assembly also includes a protruding rod, a transmission arm, a spiral groove, and an elastic element. The telescopic sliding shaft is also fixedly provided with a protruding rod, and a transmission arm is rotatably connected to the protruding rod. The transmission arm is elastically slidably sleeved on the bushing rod. The spiral groove is spirally arranged on the cylindrical surface of the sleeve shell. The elastic element is assembled in the cavity of the sleeve shell. The protruding rod is limited and slidably assembled in the spiral groove, and one end of the telescopic sliding shaft elastically abuts against the elastic element.

9. The strength testing equipment for rolled steel bars according to claim 1, characterized in that, The rolling bar strength testing equipment also includes a feeding plate assembly, which includes a feeding channel, a top support, an inclined pressure surface, and a limiting hole. The feeding channel is rotatably installed at one end of the base plate to support multiple rolling bar samples to be tested. A top support is provided at one bottom end of the feeding channel, and the top support is movably pressed against the platform of the base plate. An inclined pressure surface is also provided at the bottom of the feeding channel. The clamping plate assembly also includes a tail bracket and a lifting shaft. The tail bracket is fixedly assembled on one side of the side bracket, and a lifting shaft is provided at its bottom. The lifting shaft slides against the inclined pressure surface. The feeding plate assembly also includes a limiting hole, which is arranged on the surface of the feeding channel. The machine tool component also includes a protruding post, which is fixedly arranged on the main machine tool and passes through the limiting hole to limit the sliding of the rolled steel bar sample on the surface of the feeding channel.

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