CN212674623U

CN212674623U - Load loading device for steel constant-load delayed fracture test

Info

Publication number: CN212674623U
Application number: CN202021726093.3U
Authority: CN
Inventors: 王海龙; 王金荣; 许强; 逯志强; 张茜; 张淋博; 赵光; 高小尧; 李志阳
Original assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Current assignee: Tangshan Iron and Steel Group Co Ltd; HBIS Co Ltd Tangshan Branch
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-09
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a steel constant load delay fracture test load loading device belongs to material testing and equips technical field. The automatic pressure gauge comprises a fixed seat, a moving seat (2), an upper pin shaft I (3), a middle pin shaft I (4), a lower support arm I (5), an upper pull arm I (6), a screw rod (7), an upper pressure table (8), an upper chuck (10), a lower chuck (11), a pedestal (13), a pressure gauge (14), a lower pin shaft I (17), an upper pin shaft II (18), an upper pull arm II (19), a middle pin shaft II (20), a lower support arm II (21) and a lower pin shaft II (22), wherein the upper pull arm I (6), the lower support arm I (5), the upper pull arm II (19) and the fixed seat (1) are hinged, the moving seat (2) is hinged, and the screw rod (7) is in assembly connection with threaded holes of the middle pin shaft I (4) and the middle pin shaft II (20). The utility model discloses device simple manufacture, device volume are less, save space, easy and simple to handle, experimental precision is high.

Description

Load loading device for steel constant-load delayed fracture test

Technical Field

The utility model relates to a steel constant load delay fracture test load loading device belongs to material testing and equips technical field.

Background

The steel constant load delayed fracture test is an important evaluation means for testing the hydrogen-induced delayed fracture sensitivity of high-strength steel, and the constant load loading test has great significance along with the popularization of high-strength steel application. However, the load loading device in the laboratory at present mainly utilizes the lever principle, uses a loading block for loading, and is expensive, heavy in equipment and tedious in steel test detection. Therefore, it is necessary to design a load loading device for a steel constant-load delayed fracture test, which has the advantages of low cost, space saving, simple operation and high test precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steel constant load delay fracture test load loading device to present technical problem, solve present equipment expensive, heavy, complex operation scheduling problem.

The utility model discloses the technical scheme who adopts as follows: a load loading device for a steel constant-load delayed fracture test comprises a fixed seat, a moving seat, an upper pin shaft I, a middle pin shaft I, a lower support arm I, an upper pull arm I, a screw rod, an upper pressure table, an upper chuck, a lower chuck, a pedestal, a pressure gauge, a lower pin shaft I, an upper pin shaft II, an upper pull arm II, a middle pin shaft II, a lower support arm II and a lower pin shaft II, wherein the fixed seat and the moving seat are of groove-shaped structures;

the upper end of the upper pull arm I is hinged with the movable seat through an upper pin shaft I, the other end of the upper pull arm I is hinged with the lower support arm I through a middle pin shaft I, the other end of the lower support arm I is hinged with the fixed seat through a lower pin shaft I, and the upper pull arm II, the lower support arm II, the upper pin shaft II, the middle pin shaft II and the lower pin shaft II are symmetrically arranged at the other end between the fixed seat and the movable seat according to the same connection mode of the upper pull arm I, the lower support arm I, the upper pin shaft I, the middle pin shaft I and the lower pin shaft I;

the upper pressure table is fixedly connected to the lower end face of the movable base, the upper chuck is connected to the lower end face of the upper pressure table, the pedestal is of a hollow structure and is fixedly connected to the upper end face of the fixed base, the pressure gauge is fixedly connected to the pedestal, and the lower chuck is fixedly connected to the pressure gauge;

threaded holes are formed in the middle pin shaft I and the middle pin shaft II in the direction perpendicular to the axis, and the screw penetrates through the hollow structure of the pedestal to be assembled and connected with the threaded holes of the middle pin shaft I and the middle pin shaft II.

The screw rod is a double-tooth screw rod, and the thread directions of two ends of the screw rod are opposite.

And a loading spring is arranged between the upper chuck and the upper pressure table.

The lower chuck is of a groove-shaped structure, and positioning pin holes are symmetrically formed in the groove walls on the two sides of the lower chuck.

One end of the screw is provided with a ratchet wrench.

And the thread directions of the threaded holes of the middle pin shaft I (4) and the middle pin shaft II (20) are opposite.

The length of the loading spring (9) is 180-220 mm, the thread length is 22-28 mm, and the outer diameter is 40-50 mm.

The utility model discloses decorate beneficial effect and lie in: the utility model discloses device simple manufacture, low cost, the device volume is less, saves the laboratory space, and is easy and simple to handle, experimental precision is high.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a schematic cross-sectional view of the device of the present invention;

FIG. 3 is a schematic view of the device of the present invention in use;

FIG. 4 is an assembled cross-sectional view of a pin shaft I and a double-tooth screw in the device of the utility model;

FIG. 5 is a schematic view showing a partial enlargement of the apparatus of the present invention in a working state;

FIG. 6 is a schematic cross-sectional view of the lower chuck and the positioning pin hole of the device of the present invention in a working state;

labeled as: the device comprises a fixed seat 1, a moving seat 2, an upper pin shaft I3, a middle pin shaft I4, a lower support arm I5, an upper pull arm I6, a double-tooth screw 7, an upper pressure table 8, a loading spring 9, an upper chuck 10, a lower chuck 11, a positioning pin hole 12, a pedestal 13, a pressure gauge 14, a ratchet wrench 15, a loading piece 16, a lower pin shaft I17, an upper pin shaft II 18, an upper pull arm II 19, a middle pin shaft II 20, a lower support arm II 21, a lower pin shaft II 22 and a pin 23.

Detailed Description

The following provides a more detailed description of the present invention with reference to the accompanying drawings and the embodiments.

As shown in the attached drawings, the load loading device for the steel constant-load delayed fracture test comprises a fixed seat 1, a movable seat 2, an upper pin shaft I3, a middle pin shaft I4, a lower support arm I5, an upper pull arm I6, a double-tooth screw 7, an upper pressure table 8, an upper chuck 10, a lower chuck 11, a positioning pin hole 12, a pedestal 13, a pressure gauge 14, a loading piece 16, a lower pin shaft I17, an upper pin shaft II 18, an upper pull arm II 19, a middle pin shaft II 20, a lower support arm II 21 and a lower pin shaft II 22, wherein the fixed seat 1 and the movable seat 2 are of a groove-shaped structure,

the upper end of the upper pull arm I6 is hinged with the movable seat 2 through an upper pin shaft I3, the other end of the upper pull arm I6 is hinged with the lower support arm I5 through a middle pin shaft I4, the other end of the lower support arm I5 is hinged with the fixed seat 1 through a lower pin shaft I17, and the upper pull arm II 19, the lower support arm II 21, the upper pin shaft II 18, the middle pin shaft II 20 and the lower pin shaft II 22 are symmetrically arranged at the other end between the fixed seat 1 and the movable seat 2 according to the same connection mode of the upper pull arm I6, the lower support arm I5, the upper pin shaft I3, the middle pin shaft I4 and the lower pin shaft I17; the upper pressure table 8 is fixedly connected to the lower end face of the moving seat 2, and a loading spring 9 is arranged between the upper chuck 10 and the upper pressure table 8. The upper chuck 10 is connected with the lower end surface of the upper pressure table 8, the pedestal 13 is of a hollow structure and is fixedly connected with the upper end surface of the fixed seat 1, the pressure gauge 14 is fixedly connected with the pedestal 13, and the lower chuck 11 is fixedly connected with the pressure gauge 14;

threaded holes are formed in the middle pin shaft I4 and the middle pin shaft II 20 in the direction perpendicular to the axis, and the screw 7 penetrates through the hollow structure of the pedestal 13 to be assembled and connected with the threaded holes of the middle pin shaft I4 and the threaded holes of the middle pin shaft II 20. The screw 7 is a double-tooth screw, and the thread directions of two ends of the screw are opposite. The lower chuck 11 is of a groove-shaped structure, and positioning pin holes 12 are symmetrically arranged on the groove walls of two sides. The screw 7 is fitted with a ratchet wrench 15 at one end. And the thread directions of the threaded holes of the middle pin shaft I4 and the middle pin shaft II 20 are opposite. The length of the loading spring 9 is 200 mm, the thread length is 25 mm, and the outer diameter is 45 mm.

During the test, fix fixing base 1 on the laboratory bench, place loading piece 16 in lower chuck 11, utilize pin 23 to pass locating pin hole 12 and the preset hole of loading piece 16, will load piece 16 and be fixed in operating position.

The double-tooth screw 7 is screwed anticlockwise through the ratchet wrench 15, and the lower support arm I5, the upper pull arm I6, the upper pull arm II 19 and the lower support arm II 21 are driven to vertically move upwards at a constant speed through movement of threads. When the pressure gauge 14 indicates that the preset pressure is reached, screwing is stopped, the ratchet wrench 15 is detached, the current position is clamped by the friction force of the threads, and the loading is finished. The loading part 16 is subsequently assembled with the electrolysis device and added with the corrosive liquid according to the requirement

The utility model discloses device simple manufacture, low cost, the device volume is less, saves the laboratory space, and is easy and simple to handle, experimental precision is high.

Claims

1. A steel constant-load delayed fracture test load loading device is characterized by comprising a fixed seat (1), a moving seat (2), an upper pin shaft I (3), a middle pin shaft I (4), a lower arm I (5), an upper pull arm I (6), a screw (7), an upper pressure table (8), an upper chuck (10), a lower chuck (11), a pedestal (13), a pressure gauge (14), a lower pin shaft I (17), an upper pin shaft II (18), an upper pull arm II (19), a middle pin shaft II (20), a lower arm II (21) and a lower pin shaft II (22), wherein the fixed seat (1) and the moving seat (2) are of a groove-shaped structure,

the lower support arm I (5), the upper pull arm I (6), the upper pull arm II (19) and the lower support arm II (21) are of a key rod type structure with notches and pin shaft holes at two ends, the upper end of the upper pull arm I (6) is hinged with the movable seat (2) through an upper pin shaft I (3), the other end of the upper pull arm I is hinged with the lower support arm I (5) through a middle pin shaft I (4), the other end of the lower support arm I (5) is hinged with the fixed seat (1) through a lower pin shaft I (17), the upper pull arm II (19), the lower pull arm II (21), the upper pin shaft II (18), the middle pin shaft II (20) and the lower pin shaft II (22) are connected in the same mode as the upper pull arm I (6), the lower pull arm I (5), the upper pin shaft I (3), the middle pin shaft I (4) and the lower pin shaft I (17), the other ends are symmetrically arranged between the fixed seat (1) and the movable seat (2);

the upper pressure table (8) is fixedly connected to the lower end face of the movable seat (2), the upper chuck (10) is connected to the lower end face of the upper pressure table (8), the pedestal (13) is of a hollow structure and is fixedly connected to the upper end face of the fixed seat (1), the pressure gauge (14) is fixedly connected to the pedestal (13), and the lower chuck (11) is fixedly connected to the pressure gauge (14);

threaded holes are formed in the middle pin shaft I (4) and the middle pin shaft II (20) in the direction perpendicular to the axis, and the screw rod (7) penetrates through the hollow structure of the pedestal (13) to be assembled and connected with the threaded holes of the middle pin shaft I (4) and the threaded holes of the middle pin shaft II (20).

2. The steel constant-load delayed fracture test load loading device according to claim 1, wherein the screw (7) is a double-thread screw, and the thread directions of two ends of the screw are opposite.

3. The steel constant-load delayed fracture test load loading device according to claim 1, wherein a loading spring (9) is arranged between the upper chuck (10) and the upper pressure table (8).

4. The steel constant-load delayed fracture test load loading device according to claim 1, wherein the lower chuck (11) is of a groove-shaped structure, and positioning pin holes (12) are symmetrically arranged on the groove walls of two sides.

5. The steel constant-load delayed fracture test load loading device according to claim 1, wherein a ratchet wrench (15) is assembled at one end of the screw (7).

6. The steel constant-load delayed fracture test load loading device according to claim 1, wherein the thread directions of the threaded holes of the middle pin shaft I (4) and the middle pin shaft II (20) are opposite.

7. The steel constant-load delayed fracture test load loading device as claimed in claim 3, wherein the length of the loading spring (9) is 180-220 mm, the thread is 22-28 mm, and the outer diameter is 40-50 mm.