Toughness testing device based on ultra-fine grain high-toughness wear-resistant steel

Abstract

The utility model provides a toughness testing device based on ultra-fine grain high-toughness wear-resistant steel, which comprises a workbench, the top end of the workbench is fixedly connected with a support, the surface of the support is provided with a lifting assembly, two first guide rods are fixedly connected between the support and the workbench, an impact assembly is arranged between the two first guide rods, and the impact assembly is connected with the support. A protective cover is installed at the top end of the workbench, an open hole is formed in the top end of the protective cover, an impact force sensor is installed at the position, located in the protective cover, of the top end of the workbench, and a pressing assembly is fixedly connected to the bottom end of the workbench. The impact strength of the wear-resistant steel can be adjusted by adjusting the descending height of the impact assembly and additionally installing different numbers of balancing weights, and the impact force of each time of impact can be detected through an arranged impact force sensor, so that the toughness of the wear-resistant steel is detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel toughness testing, and in particular relates to a toughness testing device based on ultrafine grain high-toughness wear-resistant steel. Background Art

[0002] Low alloy wear-resistant steel uses tempered martensite as its usage structure. It is characterized by low cost, good weldability and excellent toughness. It is the most widely used wear-resistant steel at present. As users put forward higher requirements for wear resistance, high wear-resistant steel has developed rapidly, and the conventional toughness test method for high-toughness wear-resistant steel is impact test. After searching, it was found that the application number "202222395958.8" disclosed "a material impact toughness detection device", which recorded "including a workbench and a detection groove arranged on the upper surface of the workbench, the detection groove is connected to the inside of the workbench, and the upper surface of the workbench is located directly above the detection groove. An impact detection mechanism is installed". When in use, the above-mentioned detection device can improve the safety of the staff during the detection process through the set material trough baffle, and at the same time, the set driving cylinder drives the impact head to descend to test the toughness of the steel. However, the above-mentioned detection device still has certain shortcomings when in use: the driving cylinder drives the impact head to descend to a fixed height, so that the driving cylinder drives the impact head to have a consistent impact force on the steel, which is not convenient for impact force tests of different intensities on the steel, and it is also not convenient for detecting the impact force. Based on this, we propose a toughness testing device that can conveniently adjust the impact intensity and detect the impact force at the same time. Utility Model Content

[0003] The utility model aims to provide a toughness testing device based on ultrafine grain high toughness wear-resistant steel, aiming to solve the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a toughness testing device based on ultrafine-grained high-toughness wear-resistant steel, comprising a workbench, a bracket fixedly connected to the top of the workbench, a lifting assembly installed on the surface of the bracket, two first guide rods fixedly connected between the bracket and the workbench, an impact assembly installed between the two first guide rods, a protective cover installed on the top of the workbench, an opening is opened on the top of the protective cover, an impact force sensor is installed on the top of the workbench in the protective cover, and a clamping assembly is fixedly connected to the bottom of the workbench;

[0005] The impact assembly includes a connecting plate, both ends of which are provided with first guide holes, the first guide rod is connected through the first guide hole, a metal seat is fixedly connected to the middle of the top end of the connecting plate, and an impact head is fixedly connected to the middle of the bottom end of the connecting plate, and the impact head, the opening and the axis of the impact force sensor are located on the same axis.

[0006] As a preferred technical solution of the utility model, the lifting assembly includes a servo motor fixedly mounted on the top of the bracket, the output shaft of the servo motor is connected to the screw rod, one end of the screw rod is rotatably connected to the surface of the workbench, a second guide rod is connected between the bracket and the workbench, a moving block is installed on the surface of the screw rod and the second guide rod, the front end of the moving block is fixedly connected to an extension plate, the bottom end of the extension plate is fixedly connected to an electromagnet, and the electromagnet is located directly above the metal seat.

[0007] As a preferred technical solution of the utility model, both sides of the top end of the connecting plate are fixedly connected with screws, a plurality of counterweights are sleeved on the surface of the screw, and a locking nut is threadedly connected to the surface of the screw.

[0008] As a preferred technical solution of the utility model, the surface of the workbench is located inside the protective cover and has two placement blocks installed thereon. The two placement blocks are symmetrically arranged according to the impact force sensor, and the surface of the placement blocks is in the same horizontal plane as the surface of the impact force sensor.

[0009] As a preferred technical solution of the utility model, the surface of the workbench is located in the protective cover and has four through second guide holes, the clamping assembly includes an electric push rod fixedly installed on the bottom end of the workbench, the piston rod of the electric push rod is fixedly connected to the push plate, four third guide rods are installed on the surface of the push plate, the third guide rods are interlaced and connected with the corresponding second guide holes, one end of the third guide rod located in the protective cover is fixedly connected to the press frame, and a square groove is opened in the middle of the press frame.

[0010] As a preferred technical solution of the utility model, the size of the opening is larger than the size of the impact head.

[0011] As a preferred technical solution of the utility model, a scale plate is fixedly connected between the workbench and the bracket, scale lines are arranged on the surface of the scale plate, and an indicator rod is fixedly connected to one side of the moving block.

[0012] As a preferred technical solution of the utility model, the side surface of the indicator rod is in contact with the surface of the scale plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the lifting assembly is arranged to drive the impact assembly to lift, and after the electromagnet is powered off, the impact assembly will vertically downwardly perform an impact test on the wear-resistant steel, and by adjusting the descending height of the impact assembly and adding different numbers of counterweights, the impact force of the wear-resistant steel can be adjusted, and the impact force sensor is arranged to detect the impact force of each impact, thereby realizing the detection of the toughness of the wear-resistant steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the lifting component in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the protective cover in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the impact assembly in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the compression assembly in the utility model;

[0020] Figure 6 It is a structural schematic diagram of the workbench in the utility model;

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] In the figure: 1. workbench; 2. bracket; 3. lifting assembly; 31. servo motor; 32. screw; 33. second guide rod; 34. moving block; 35. extension plate; 36. electromagnet; 4. first guide rod; 5. impact assembly; 51. connecting plate; 52. first guide hole; 53. metal seat; 54. impact head; 55. screw; 56. counterweight; 57. locking nut; 6. protective cover; 7. opening; 8. impact force sensor; 9. clamping assembly; 91. electric push rod; 92. push plate; 93. third guide rod; 94. pressure frame; 95. square slot; 10. placement block; 11. second guide hole; 12. scale plate; 13. indicator rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 7The utility model provides the following technical solutions: a toughness testing device based on ultrafine-grained high-toughness wear-resistant steel, comprising a workbench 1, a bracket 2 is fixedly connected to the top of the workbench 1, a lifting assembly 3 is installed on the surface of the bracket 2, two first guide rods 4 are fixedly connected between the bracket 2 and the workbench 1, an impact assembly 5 is installed between the two first guide rods 4, a protective cover 6 is installed on the top of the workbench 1, an opening 7 is opened on the top of the protective cover 6, an impact force sensor 8 is installed on the top of the workbench 1 in the protective cover 6, and a clamping assembly 9 is fixedly connected to the bottom of the workbench 1.

[0025] In this embodiment, the impact assembly 5 includes a connecting plate 51, both ends of which are provided with first guide holes 52, the first guide rod 4 is inserted and connected with the first guide hole 52, a metal seat 53 is fixedly connected to the middle of the top end of the connecting plate 51, and an impact head 54 is fixedly connected to the middle of the bottom end of the connecting plate 51, and the axis of the impact head 54, the opening 7 and the impact force sensor 8 are located on the same axis.

[0026] Specifically, by adjusting the height of the connecting plate 51, when the connecting plate 51 descends, the steel plate is impact tested by the impact head 54, and the impact force sensor 8 is provided to record the impact force, thereby making it easier to test the toughness of the wear-resistant steel.

[0027] In this embodiment, the lifting assembly 3 includes a servo motor 31 fixedly mounted on the top of the bracket 2, the output shaft of the servo motor 31 is connected to the screw rod 32, one end of the screw rod 32 is rotatably connected to the surface of the workbench 1, a second guide rod 33 is connected between the bracket 2 and the workbench 1, a moving block 34 is installed on the surface of the screw rod 32 and the second guide rod 33, the front end of the moving block 34 is fixedly connected to an extension plate 35, the bottom end of the extension plate 35 is fixedly connected to an electromagnet 36, and the electromagnet 36 is located directly above the metal seat 53.

[0028] Specifically, the servo motor 31 drives the screw rod 32 to rotate, so that the moving block 34 drives the extension plate 35 to descend. When the electromagnet 36 contacts the metal seat 53, the electromagnet 36 is energized, and the electromagnet 36 drives the metal seat 53 to lift the connecting plate 51. By adjusting the lifting height of the connecting plate 51, the impact force can be easily adjusted.

[0029] In this embodiment, both sides of the top of the connecting plate 51 are fixedly connected with screw rods 55 , a plurality of counterweights 56 are sleeved on the surface of the screw rods 55 , and a locking nut 57 is threadedly connected to the surface of the screw rods 55 .

[0030] Specifically, the impact force of the impact head 54 on the wear-resistant steel can be further adjusted by adding the counterweight 56, and the counterweight 56 ​​can be fixed by tightening the locking nut 57, thereby preventing the counterweight 56 ​​from being separated from the screw 55 when impacting the wear-resistant steel.

[0031] In this embodiment, two placement blocks 10 are installed on the surface of the workbench 1 inside the protective cover 6. The two placement blocks 10 are symmetrically arranged with respect to the impact force sensor 8. The surfaces of the placement blocks 10 and the surface of the impact force sensor 8 are in the same horizontal plane.

[0032] Specifically, in this way, the placement block 10 can support the wear-resistant steel.

[0033] In this embodiment, the surface of the workbench 1 is located in the protective cover 6 and has four through second guide holes 11, the clamping assembly 9 includes an electric push rod 91 fixedly installed at the bottom end of the workbench 1, the piston rod of the electric push rod 91 is fixedly connected to the push plate 92, and four third guide rods 93 are installed on the surface of the push plate 92, the third guide rods 93 are connected with the corresponding second guide holes 11 through the insertion, one end of the third guide rod 93 located in the protective cover 6 is fixedly connected to the pressing frame 94, and a square slot 95 is opened in the middle of the pressing frame 94.

[0034] Specifically, the electric push rod 91 drives the push plate 92 to descend, so that the third guide rod 93 drives the pressure frame 94 to descend, and then the pressure frame 94 can press and fix the wear-resistant steel, avoiding the position displacement of the wear-resistant steel after an impact test, which makes it inconvenient to carry out continuous impact tests.

[0035] In this embodiment, the size of the opening 7 is larger than the size of the impact head 54 .

[0036] Specifically, in this manner, the impact head 54 can smoothly pass through the opening 7 to perform an impact test on the wear-resistant steel in the protective cover 6 .

[0037] In this embodiment, a scale plate 12 is fixedly connected between the workbench 1 and the bracket 2, and scale lines are arranged on the surface of the scale plate 12. An indicator rod 13 is fixedly connected to one side of the moving block 34, and the side surface of the indicator rod 13 is in contact with the surface of the scale plate 12.

[0038] Specifically, the indicating rod 13 cooperates with the scale plate 12 to facilitate the staff to adjust the descending height of the impact head 54 .

[0039] Working principle: Through the servo motor 31 and the screw rod 32, the electromagnet 36 cooperates with the metal seat 53 to drive the connecting plate 51 to rise and fall, and the indicator rod 13 cooperates with the scale plate 12 to adjust the descending height of the impact head 54, so as to facilitate the adjustment of different impact forces, and the counterweight block 56 can further adjust the impact force, and the impact component 5 can be used to perform impact test on wear-resistant steel, and the clamping component 9 can avoid the displacement of the position of wear-resistant steel, so that the device can perform continuous impact tests on wear-resistant steel, and the result of each test can be recorded by the impact force sensor 8, and the protective cover 6 can avoid the breakage of wear-resistant steel and pose a threat to the staff.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A toughness testing device based on ultrafine-grained high-toughness wear-resistant steel, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a bracket (2), a lifting assembly (3) is installed on the surface of the bracket (2), two first guide rods (4) are fixedly connected between the bracket (2) and the workbench (1), an impact assembly (5) is installed between the two first guide rods (4), a protective cover (6) is installed at the top of the workbench (1), an opening (7) is opened at the top of the protective cover (6), an impact force sensor (8) is installed at the top of the workbench (1) and is located inside the protective cover (6), and a clamping assembly (9) is fixedly connected to the bottom of the workbench (1); The impact assembly (5) comprises a connecting plate (51), both ends of the connecting plate (51) are provided with first guide holes (52), the first guide rod (4) is connected to the first guide hole (52) through insertion, a metal seat (53) is fixedly connected to the middle of the top end of the connecting plate (51), and an impact head (54) is fixedly connected to the middle of the bottom end of the connecting plate (51), and the axis of the impact head (54), the opening (7) and the impact force sensor (8) are located on the same axis.

2. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 1 is characterized in that: The lifting assembly (3) comprises a servo motor (31) fixedly mounted on the top of the bracket (2); the output shaft of the servo motor (31) is connected to a screw rod (32); one end of the screw rod (32) is rotatably connected to the surface of the workbench (1); a second guide rod (33) is connected between the bracket (2) and the workbench (1); a moving block (34) is mounted on the surfaces of the screw rod (32) and the second guide rod (33); the front end of the moving block (34) is fixedly connected to an extension plate (35); the bottom end of the extension plate (35) is fixedly connected to an electromagnet (36); the electromagnet (36) is located directly above the metal seat (53).

3. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 1 is characterized in that: Screw rods (55) are fixedly connected to both sides of the top end of the connecting plate (51), a plurality of counterweight blocks (56) are sleeved on the surface of the screw rod (55), and a locking nut (57) is threadedly connected to the surface of the screw rod (55).

4. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 1 is characterized in that: The surface of the workbench (1) is located inside the protective cover (6) and has two placement blocks (10) installed thereon. The two placement blocks (10) are symmetrically arranged with respect to the impact force sensor (8), and the surfaces of the placement blocks (10) and the surface of the impact force sensor (8) are in the same horizontal plane.

5. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 1 is characterized in that: The surface of the workbench (1) is provided with four through-going second guide holes (11) in the protective cover (6), the clamping assembly (9) comprises an electric push rod (91) fixedly mounted on the bottom end of the workbench (1), the piston rod of the electric push rod (91) is fixedly connected to a push plate (92), the surface of the push plate (92) is provided with four third guide rods (93), the third guide rods (93) are interlacedly connected with the corresponding second guide holes (11), one end of the third guide rod (93) located in the protective cover (6) is fixedly connected to a press frame (94), and a square slot (95) is provided in the middle of the press frame (94).

6. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 1 is characterized in that: The size of the opening (7) is larger than the size of the impact head (54).

7. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 2 is characterized in that: A scale plate (12) is also fixedly connected between the workbench (1) and the bracket (2), and scale lines are provided on the surface of the scale plate (12). An indicator rod (13) is fixedly connected to one side of the moving block (34).

8. The toughness testing device based on ultrafine grain high toughness wear-resistant steel according to claim 7 is characterized in that: The side surface of the indicating rod (13) is in contact with the surface of the scale plate (12).

Images