A steel toughness testing device

Abstract

This invention relates to the field of building steel quality testing technology, specifically to a steel toughness testing device. The device includes a base, on which two symmetrically arranged positioning blocks are fixedly mounted via a bracket. Each positioning block has a downward pressure groove on its upper surface, with both ends of the groove penetrating the surfaces of both sides of the positioning block. A support unit is installed within the downward pressure groove. Two symmetrically arranged fixing rods are fixedly mounted on the base, with a cylinder fixed between them via a bracket. An impact groove is formed on the side of the two fixing rods that are close to each other, and an impact unit is positioned between the two fixing rods. This invention incorporates a support unit and an impact unit. The support unit clamps both ends of the steel pipe, and the cylinder drives the impact unit downward, causing the impact blades to strike the steel pipe with varying forces. This solves the problem that existing toughness testing machines are not suitable for building steel pipes.

Description

Technical Field

[0001] This invention relates to the field of building steel quality testing technology, and in particular to a steel toughness testing device. Background Technology

[0002] Construction steel refers to various types of steel materials used in construction projects. Its toughness is an indicator of material quality, representing the material's ability to absorb energy during deformation and fracture. Generally, the toughness of construction steel needs to be tested after it leaves the factory.

[0003] There are various methods for testing toughness. In construction steel, the fracture toughness is usually tested. In current technology, the fracture toughness of steel is generally tested by applying an impact load to the steel and observing its resistance to fracture. The test object is usually a cut sample. However, steel pipes are commonly used in the construction of temporary buildings on construction sites, and the following problems may occur when testing them: 1. Existing fracture toughness testing machines are generally small, while the size of construction steel pipes is large, making them unsuitable for construction steel pipes; 2. When testing the toughness of steel pipes, it may also be necessary to test their support strength, but existing toughness testing machines cannot test the support strength of steel pipes, requiring subsequent manual testing, which is inefficient. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art by proposing a steel toughness testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a steel toughness testing device, including a base, on which two symmetrically arranged positioning blocks are fixedly installed by a bracket. The upper surface of each positioning block is provided with a downward pressing groove, and the two ends of the downward pressing groove pass through the surfaces on both sides of the positioning block respectively. A support unit is provided in the downward pressing groove.

[0006] The support unit consists of a support slider and a rotating block. The upper and lower surfaces of the rotating block are both arc-shaped. The support slider is slidably connected to the lower pressure groove. A rotating groove is opened on the upper surface of the support slider. The two ends of the rotating groove pass through the surfaces on both sides of the support slider. The rotating block is hinged to the inner wall of the rotating groove. A steel pipe is set on the top of the rotating block. Two symmetrically arranged fixed rods are fixedly installed on the base. A cylinder is fixedly installed between the two fixed rods through a bracket. An impact groove is opened on the side of the two fixed rods that are close to each other. An impact unit is set between the two fixed rods.

[0007] The impact unit consists of an active slider, a driven slider, and an impact blade. The active slider and the driven slider are arranged between two fixed rods. Both ends of the active slider and the driven slider are slidably connected to the impact groove. The active slider is fixedly installed on the telescopic end of the cylinder, and the impact blade is fixedly installed on the bottom of the driven slider.

[0008] In the aforementioned steel toughness testing device, the upper surface of the active slider has two symmetrically arranged locking slots, and the upper surface of the driven slider has two symmetrically arranged horizontal slots. The horizontal slots correspond one-to-one with the locking slots. A locking slider is slidably connected in the horizontal slot. The end of the locking slider away from the horizontal slot extends out of the horizontal slot and is fixedly installed with a locking rod. The locking rod passes through the corresponding locking slot. The end of the locking rod away from the locking slider is fixedly installed with a triangular locking tooth. The two locking teeth are installed in opposite directions. Unlocking rods are fixedly installed on the inner walls of the two impact slots by brackets. The lower surface of the unlocking rod has an arc-shaped structure, and the unlocking rod corresponds one-to-one with the locking tooth.

[0009] In the aforementioned steel toughness testing device, the upper surface of the active slider has two symmetrically arranged through holes, and the upper surface of the driven slider has two symmetrically arranged extrusion rods fixedly installed. The extrusion rods correspond one-to-one with the through holes and pass through the corresponding through holes. Extrusion sliders are slidably connected in both impact grooves, and the two extrusion sliders abut against the two extrusion rods respectively.

[0010] In the aforementioned steel toughness testing device, a clamping groove is provided inside the driven slider, and the two sides of the clamping groove respectively penetrate the surfaces of both sides of the driven slider. Two mutually symmetrical C-shaped clamping sliders are provided between the two fixed rods. Both clamping sliders are slidably connected to the clamping groove. Both ends of the clamping sliders extend out of the clamping groove and are fixedly installed with a pressing block. A squeezing groove is provided on the side of the two fixed rods that are close to each other. The squeezing groove corresponds to the pressing block one by one, and a displacement block is inserted in the squeezing groove.

[0011] In the steel toughness testing device described above, spring grooves are provided on the sides of the two clamping sliders that are close to each other. The two spring grooves are opened in opposite directions. A first spring telescopic rod is fixedly installed in each of the two spring grooves, and the telescopic ends of the two first spring telescopic rods abut against each other.

[0012] In the aforementioned steel toughness testing device, a fixed vertical sleeve is fixedly installed on the base, a plumb line is inserted inside the vertical sleeve, and an arc-shaped contact block is fixedly installed on the side of the plumb line away from the vertical sleeve. The contact block abuts against the steel pipe, and an adjusting telescopic rod is hinged to the side of the two rotating blocks that are close to each other. The telescopic ends of the two adjusting telescopic rods are hinged to the plumb line.

[0013] In the steel toughness testing device described above, L-shaped fixing blocks are fixedly installed on the sides of the two rotating blocks that are far apart from each other. A second spring telescopic rod is fixedly installed on each of the two fixing blocks. A balance block is fixedly installed at the telescopic end of each of the two second spring telescopic rods, and the balance block abuts against the steel pipe.

[0014] In the aforementioned steel toughness testing device, a roller is rotatably connected to the bottom of the lower pressure block.

[0015] Compared with existing technologies, the advantages of this building steel toughness testing device are as follows: 1. The present invention is designed with a support unit and an impact unit. The support unit can clamp both ends of the steel pipe, and the impact unit is driven to move down by the cylinder, so that the impact blade hits the steel pipe with different forces, which solves the problem that existing toughness testing machines cannot be adapted to building steel pipes.

[0016] 2. This invention designs a pressing block, which is driven by a cylinder to move downwards, so that the pressing block abuts against the inclined surface of the displacement block and they abut against each other. By pressing the steel pipe with the pressing block, the supporting strength of the steel pipe can be tested, which solves the problem of low efficiency caused by subsequent manual testing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the planar structure of the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is the invention Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0021] Figure 5 This is a cross-sectional structural schematic diagram of the impact groove of the present invention.

[0022] Figure 6 This is the invention Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0023] Figure 7 This is the invention Figure 5 A magnified schematic diagram of the structure at point C.

[0024] Figure 8 This is a cross-sectional structural schematic diagram of the support unit of the present invention.

[0025] Figure 9 This is a cross-sectional structural diagram of the roller and extrusion groove of the present invention.

[0026] In the diagram: 1. Base; 2. Positioning block; 201. Downward pressing groove; 3. Support unit; 301. Support slider; 302. Rotating block; 303. Rotating groove; 4. Fixing rod; 401. Impact groove; 5. Cylinder; 6. Impact unit; 7. Driving slider; 8. Driven slider; 9. Impact blade; 701. Locking through groove; 801. Horizontal groove; 802. Locking slider; 803. Locking rod; 804. Locking tooth; 402 702. Unlocking rod; 803. Through hole; 804. Pressing rod; 805. Pressing slider; 806. Clamping groove; 807. Clamping slider; 10. Pressing block; 408. Pressing groove; 11. Displacement block; 809. Spring groove; 12. No. 1 spring telescopic rod; 13. Vertical sleeve; 14. Vertical rod; 15. Abutment block; 16. Adjusting telescopic rod; 17. Fixing block; 18. No. 2 spring telescopic rod; 19. Balance block; 20. Roller. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Reference Figures 1-9A steel toughness testing device includes a base 1. Two symmetrically arranged positioning blocks 2 are fixedly mounted on the base 1 via a bracket. Each positioning block 2 has a downward sliding groove 201 on its upper surface, with both ends of the groove penetrating the surfaces of both sides of the positioning block 2. A support unit 3 is disposed within the downward sliding groove 201, consisting of a support slider 301 and a rotating block 302. The upper and lower surfaces of the rotating block 302 are arc-shaped. The support slider 301 is slidably connected to the downward sliding groove 201. A rotating groove 303 is formed on the upper surface of the support slider 301, with both ends penetrating the surfaces of both sides of the support slider 301. The rotating block 302 is hinged to the inner wall of the rotating groove 303. A steel pipe is disposed on the top of the rotating block 302. Two symmetrically arranged fixing rods 4 are fixedly mounted on the base 1, and a cylinder 5 is fixedly mounted between the two fixing rods 4 via a bracket. The two fixing rods 4 are connected... Impact grooves 401 are provided on the sides that are close to each other. An impact unit 6 is provided between the two fixed rods 4. The impact unit 6 consists of an active slider 7, a driven slider 8, and an impact blade 9. The active slider 7 and the driven slider 8 are located between the two fixed rods 4. Both ends of the active slider 7 and the driven slider 8 are slidably connected to the impact grooves 401. The active slider 7 is fixedly installed on the telescopic end of the cylinder 5. The impact blade 9 is fixedly installed at the bottom of the driven slider 8. The support unit 3 is used to support both ends of the steel pipe. The cylinder 5 drives the active slider 7 to move, so that the active slider 7 drives the impact unit 6 to impact the middle part of the steel pipe. This can test the toughness of the steel pipe. A No. 1 spring is provided in the downward groove 201 to provide a certain buffering effect on the impact. When the steel pipe bends, the rotating block 302 rotates at a certain angle so that the supporting force of the rotating block 302 on the steel pipe is perpendicular to the steel pipe, which can stabilize the steel pipe.

[0030] The upper surface of the active slider 7 has two symmetrically arranged locking slots 701, and the upper surface of the driven slider 8 has two symmetrically arranged horizontal sliding grooves 801. The horizontal sliding grooves 801 correspond one-to-one with the locking slots 701. A locking slider 802 is slidably connected within each horizontal sliding groove 801. The end of the locking slider 802 away from the horizontal sliding groove 801 extends out of the groove and is fixedly mounted with a locking rod 803. The locking rod 803 passes through the corresponding locking slot 701. A triangular locking tooth 804 is fixedly mounted at the end of the locking rod 803 away from the locking slider 802. The two locking teeth 804 are installed in opposite directions. The inner walls of both impact sliding grooves 401 are fixedly mounted with brackets. The unlocking rod 402 has an arc-shaped lower surface. The unlocking rod 402 corresponds one-to-one with the locking teeth 804. The cylinder 5 drives the active slider 7 to move, which in turn drives the driven slider 8 to move. When the extension end of the cylinder 5 moves to its shortest distance, the unlocking rod 402 abuts against the inclined surface of the locking teeth 804, causing the two locking rods 803 to drive the two locking sliders 802 to move in opposite directions. This causes the locking teeth 804 to disengage from the active slider 7 and the unlocking rod 402 to disengage from the locking through groove 701. At this time, the impact unit 6 impacts the steel pipe under the action of gravity, which can achieve different detection effects. A second spring is installed in the horizontal slide groove 801 to reset the locking slider 802.

[0031] Two symmetrically arranged through holes 702 are opened on the upper surface of the active slider 7. Two symmetrically arranged extrusion rods 805 are fixedly installed on the upper surface of the driven slider 8. The extrusion rods 805 correspond one-to-one with the through holes 702 and pass through the corresponding through holes 702. Extrusion sliders 403 are slidably connected in both impact grooves 401. The two extrusion sliders 403 abut against the two extrusion rods 805 respectively. A No. 3 spring is provided in the impact groove 401. When the unlocking rod 402 is disengaged from the locking through groove 701, the extrusion slider 403 drives the extrusion rods 805 to move under the action of the No. 3 spring. This further drives the extrusion rods 805 to drive the impact unit 6 to impact the steel pipe at high speed. In conjunction with the impact blade 9, this further increases the detection method of steel pipe toughness and avoids the monotony of detection.

[0032] A clamping groove 806 is provided inside the driven slider 8. The two sides of the clamping groove 806 extend through the surfaces of both sides of the driven slider 8. Two symmetrical C-shaped clamping sliders 807 are arranged between the two fixed rods 4. Both clamping sliders 807 are slidably connected to the clamping groove 806. Both ends of the clamping sliders 807 extend out of the clamping groove 806 and are fixedly mounted with pressing blocks 10. A pressing groove 404 is provided on the side of the two fixed rods 4 that is close to each other. The pressing groove 404 corresponds one-to-one with the pressing block 10. 4. An internal displacement block 11 is inserted. When the driven slider 8 disengages from the active slider 7, the cylinder 5 drives the active slider 7 to press down and make the inclined surface of the locking tooth 804 abut against the inner wall of the locking groove 701, so that the locking tooth 804 locks the active slider 7 and the driven slider 8. The pressing block 10 abuts against the inclined surface of the displacement block 11, so that the opposing pressing blocks 10 approach each other and abut, which is used to increase the contact area between the pressing block 10 and the outer wall of the steel pipe. The cylinder 5 indirectly drives the pressing block 10 to press down slowly, which can detect the effective supporting force of the steel pipe.

[0033] Two clamping sliders 807 are provided with spring grooves 808 on their sides that are close to each other. The two spring grooves 808 are opened in opposite directions. A first spring telescopic rod 12 is fixedly installed in each of the two spring grooves 808. The telescopic ends of the two first spring telescopic rods 12 abut against each other. The first spring telescopic rod 12 is used to reset the two pairs of lower pressure blocks 10.

[0034] A fixed vertical sleeve 13 is fixedly installed on the base 1. A vertical rod 14 is inserted into the vertical sleeve 13. An arc-shaped abutment block 15 is fixedly installed on the side of the vertical rod 14 away from the vertical sleeve 13. The abutment block 15 abuts against the steel pipe. Adjustable telescopic rods 16 are hinged to the sides of the two rotating blocks 302 that are close to each other. The telescopic ends of the two adjustable telescopic rods 16 are hinged to the vertical rod 14. Flexible straps are fixedly installed at both ends of the abutment block 15 to fix the steel pipe and the abutment block 15. When the steel pipe bends during the test, the abutment block 15 drives the vertical rod 14 to press down and enter the vertical sleeve 13, maintaining the vertical movement of the vertical rod 14. This causes the two adjustable telescopic rods 16 to extend and drive the corresponding rotating blocks 302 to rotate at the same angle, ensuring that the supporting force on both ends of the steel pipe is the same and avoiding test errors caused by uneven force on both ends of the steel pipe.

[0035] Two rotating blocks 302 are each fixedly mounted with an L-shaped fixing block 17 on the side away from each other. Two spring telescopic rods 18 are fixedly mounted on each of the two fixing blocks 17. Balance blocks 19 are fixedly mounted on the telescopic ends of the two spring telescopic rods 18. The balance blocks 19 are in contact with the steel pipe. When the steel pipe is bent, the two ends of the steel pipe will slide to a certain extent. The balance blocks 19 are pushed by the spring telescopic rods 18, which in turn pushes the two ends of the steel pipe, thus balancing the steel pipe.

[0036] A roller 20 is rotatably connected to the bottom of the pressure block 10. The roller 20 is used to reduce the friction between the pressure block 10 and the shifting block 11.

[0037] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel toughness testing device, comprising a base (1), characterized in that: Two symmetrically arranged positioning blocks (2) are fixedly installed on the base (1) by a bracket. The upper surface of the two positioning blocks (2) is provided with a downward sliding groove (201). The two ends of the downward sliding groove (201) pass through the surfaces on both sides of the positioning block (2). A support unit (3) is provided in the downward sliding groove (201). The support unit (3) consists of a support slider (301) and a rotating block (302). The upper and lower surfaces of the rotating block (302) are arc-shaped. The support slider (301) is slidably connected to the lower pressure groove (201). A rotating groove (303) is provided on the upper surface of the support slider (301). The two ends of the rotating groove (303) pass through the surfaces on both sides of the support slider (301). The rotating block (302) is hinged to the inner wall of the rotating groove (303). A steel pipe is provided on the top of the rotating block (302). Two symmetrically arranged fixed rods (4) are fixedly installed on the base (1). A cylinder (5) is fixedly installed between the two fixed rods (4) through a bracket. An impact groove (401) is provided on the side of the two fixed rods (4) that are close to each other. An impact unit (6) is provided between the two fixed rods (4). The impact unit (6) consists of an active slider (7), a driven slider (8) and an impact blade (9). The active slider (7) and the driven slider (8) are arranged between two fixed rods (4). Both ends of the active slider (7) and the driven slider (8) are slidably connected to the impact groove (401). The active slider (7) is fixedly installed on the telescopic end of the cylinder (5), and the impact blade (9) is fixedly installed on the bottom of the driven slider (8). The upper surface of the active slider (7) has two symmetrically arranged locking through slots (701), and the upper surface of the driven slider (8) has two symmetrically arranged horizontal sliding slots (801). The horizontal sliding slots (801) correspond one-to-one with the locking through slots (701). A locking slider (802) is slidably connected in the horizontal sliding slots (801). The end of the locking slider (802) away from the horizontal sliding slots (801) extends out of the horizontal sliding slots (801) and is fixedly installed with a locking rod (803). The locking rod (803) passes through the corresponding locking through slots (701). The end of the locking rod (803) away from the locking slider (802) is fixedly installed with a triangular locking tooth (804). The two locking teeth (804) are installed in opposite directions. The inner walls of the two impact sliding slots (401) are fixedly installed with unlocking rods (402) by brackets. The lower surface of the unlocking rod (402) is arc-shaped. The unlocking rod (402) corresponds one-to-one with the locking teeth (804). The upper surface of the active slider (7) has two symmetrically arranged through holes (702), and the upper surface of the driven slider (8) has two symmetrically arranged extrusion rods (805) fixedly installed. The extrusion rods (805) correspond one-to-one with the through holes (702) and pass through the corresponding through holes (702). Extrusion sliders (403) are slidably connected in both impact grooves (401), and the two extrusion sliders (403) abut against the two extrusion rods (805) respectively.

2. The steel toughness testing device according to claim 1, characterized in that: The driven slider (8) is provided with a clamping groove (806). The two sides of the clamping groove (806) are respectively connected to the surfaces of the two sides of the driven slider (8). Two symmetrical C-shaped clamping sliders (807) are provided between the two fixed rods (4). Both clamping sliders (807) are slidably connected to the clamping groove (806). Both ends of the clamping sliders (807) extend out of the clamping groove (806) and are fixedly installed with a pressing block (10). The two fixed rods (4) are provided with a squeezing groove (404) on the side that is close to each other. The squeezing groove (404) corresponds to the pressing block (10) one by one. A displacement block (11) is inserted in the squeezing groove (404).

3. The steel toughness testing device according to claim 2, characterized in that: Spring grooves (808) are provided on the side of the two clamping sliders (807) that are close to each other. The opening directions of the two spring grooves (808) are opposite. A first spring telescopic rod (12) is fixedly installed in each of the two spring grooves (808). The telescopic ends of the two first spring telescopic rods (12) abut against each other.

4. The steel toughness testing device according to claim 1, characterized in that: A fixed vertical sleeve (13) is fixedly installed on the base (1). A vertical rod (14) is inserted inside the vertical sleeve (13). An arc-shaped contact block (15) is fixedly installed on the side of the vertical rod (14) away from the vertical sleeve (13). The contact block (15) abuts against the steel pipe. An adjusting telescopic rod (16) is hinged to the side of the two rotating blocks (302) that are close to each other. The telescopic ends of the two adjusting telescopic rods (16) are hinged to the vertical rod (14).

5. The steel toughness testing device according to claim 1, characterized in that: On the side of each of the two rotating blocks (302) that is far apart from each other, there is a fixed block (17) with an L-shaped structure. On each of the two fixed blocks (17), there is a second spring telescopic rod (18). On the telescopic ends of the two second spring telescopic rods (18), there is a balance block (19). The balance block (19) is in contact with the steel pipe.

6. The steel toughness testing device according to claim 2, characterized in that: The bottom of the pressing block (10) is rotatably connected to a roller (20).

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