Material tensile strength testing device suitable for high-humidity and high-salt environment

Abstract

The invention discloses a material tensile strength testing device suitable for a high-humidity and high-salt environment, the material tensile strength testing device comprises a box body, two connecting plates are fixedly connected to the rear side, close to the top, of an inner cavity of the box body, the two connecting plates are arranged in a bilateral symmetry mode, and two concentric-square-shaped frames are jointly and fixedly connected between the two connecting plates; through mutual cooperation of a driving gear, a concave mounting plate, an A-shaped mounting plate, a driving motor, a cleaning gear, an inner gear ring and the like, the outer surface of a reinforcing steel bar can be pretreated, and the situation that a test result is affected by corrosion of the surface of the reinforcing steel bar is prevented; through mutual cooperation of a component moving motor, a connecting plate, a double-thread lead screw, a moving block, a salt spray test box, a linkage rod, absorption cotton and other components, when a steel bar is tested in a continuous salt spray environment, salt spray liquid drops are attached to the outer surface of the steel bar, so that the surface of a sample is condensed; a local electrolyte membrane can be prevented from being formed on the surface of the steel bar to accelerate pitting corrosion or galvanic corrosion.

Description

Technical Field

[0001] The present invention relates to the technical field of material strength testing, in particular to a material tensile strength testing device suitable for high-humidity and high-salt environments. Background Art

[0002] The strength tensile test chamber in high humidity and high salt environment is a test equipment specially used to simulate the mechanical properties of materials in marine, coastal or industrial corrosion environments. The strength tensile test of steel bars in high humidity and high salt environment is mainly to simulate the actual service conditions of steel bars in harsh environments such as oceans, coastal areas, chemical plants, etc., and to evaluate their corrosion resistance and mechanical property degradation laws.

[0003] Existing strength tensile test chambers in high-humidity and high-salt environments require steel bars to be placed inside the chamber and fixed and clamped by clamps. When the clamps are exposed to salt spray, salt spray will crystallize on the clamp threads, making subsequent sample installation difficult or the threads stuck, causing damage to the clamps, test interruption, and even safety accidents due to forced disassembly. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The cam is connected to the chassis at the rear of the chassis, and the two chassis are symmetrically arranged, and two circular frames are fixedly connected between the two connecting plates, and the two circular frames are symmetrically arranged front to back. There is a double-threaded screw between the two connecting plates, and two moving blocks are meshed on the outer sides of the double-threaded screw. The front and rear sides of the two moving blocks are slidably connected to the adjacent circular frames, and the bottoms of the two moving blocks are fixedly connected to the salt spray test chamber, and the bottom of the salt spray test chamber is fixedly connected to a connecting rod, and the front side of the connecting rod is fixedly connected to absorbent cotton near the bottom. A central shaft is provided at the center of the double-threaded screw and is fixedly connected to it. The left end of the central shaft passes through the connecting plate on the left and is fixedly connected to a movable motor. The right end of the central shaft is inserted into the connecting plate on the right. There is a steel bar at the bottom of the double-threaded screw, and the inner walls of the two absorbent cottons are in contact with the outer sides of the steel bars. A recovery tank is installed at the bottom of the chassis.

[0006] Preferably, two slide grooves are opened on the rear side of the inner cavity of the box, and the two slide grooves are symmetrically arranged on the left and right. The inner cavities of the two slide grooves are slidably connected to the limit plate, and the front side of the limit plate is fixedly connected to the movable ring. The inner cavity of the movable ring is opened with an annular opening, and the steel bar passes through the inner cavity of the two annular openings.

[0007] Preferably, a stretching cylinder is installed on the opposite side of the two movable rings, a return spring is sleeved on the outer side of the power output shaft of the stretching cylinder, the rear sides of the two stretching cylinders are fixedly connected to mounting blocks, and the rear sides of the two mounting blocks are fixedly connected to the inner wall of the box.

[0008] Preferably, a circular ring is fitted on one side corresponding to the two movable rings, and the inner cavity of the circular ring is provided with three openings, and the three openings are arranged in a circular array with the center of the circular ring as the center, and the inner cavities of several of the openings are hinged with sleeve blocks, and the inner cavity of the sleeve block is slidably connected to a swing rod, and the corresponding ends of several of the swing rods are hinged on the movable ring.

[0009] Preferably, a protrusion is provided on the top of the circular ring, a movable block is hinged on one side of the protrusion close to the center of the steel bar, a positioning block is provided on the rear side of the movable block, a threaded groove is provided in the inner cavity of the movable block, and slots are provided on the tops of the movable block and the positioning block, and the slots and the threaded grooves are arranged to penetrate each other.

[0010] Preferably, there is a cleaning motor on the rear side of the positioning block, and an L-shaped connecting rod is fixedly connected to the top of the cleaning motor. The other end of the L-shaped connecting rod is fixedly connected to the upper box. The cleaning motor power output shaft is fixedly connected to a screw rod, and the outer side of the screw rod passes through the inner cavity of the threaded groove and engages with it. The top of the positioning block is fixedly connected to the upper box, and a plurality of placement slots are opened on the top of the upper box, and the plurality of placement slots are linearly arranged from front to back.

[0011] Preferably, the inner cavity of the placement groove is provided with an airbag, and a movable plate is commonly provided through the inner cavities of several of the placement grooves, and several extrusion plates are fixedly connected to the left side of the movable plate, and several of the extrusion plates are all fitted with adjacent airbags. A pull plate is hinged on the front side of the movable plate, and the other side of the pull plate is fixedly connected to the movable block.

[0012] Preferably, a discharge box is fixedly connected to the top of the upper box, a strip opening is provided at the bottom of the upper box, the strip opening and the placement groove are mutually connected, a discharge port is provided at the bottom of the discharge box, and molybdenum disulfide lubricant is provided inside the discharge box.

[0013] Preferably, a mounting groove is provided on the side of the movable ring located on the right side away from the center of the steel bar, and an inner gear ring is connected to the bearing on the inner wall of the mounting groove, and the inner gear ring is engaged with a plurality of driving gears, and a rotating shaft is passed through the center of the circle of the plurality of driving gears and is fixedly connected thereto, and an A-type mounting plate is sleeved on the outer side of the rotating shaft located above, and the A-type mounting plate is fixedly connected to the movable ring.

[0014] Preferably, the right end of the rotating shaft located above is fixedly connected to the driving motor, and the outer sides of the two rotating shafts located below are jointly sleeved with a concave mounting plate, the rear side of the concave mounting plate is fixedly connected to the inner wall of the box body, and the corresponding sides of several of the driving gears are jointly engaged with a cleaning gear, a cleaning brush is provided in the inner cavity of the cleaning gear, the steel bar passes through the inner cavity of the cleaning gear, and an L-shaped welding rod is fixedly connected to the top of the driving motor, and the other end of the L-shaped welding rod is fixedly connected to the A-type mounting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention realizes the mutual cooperation among the components such as the cleaning motor, L-shaped connecting rod, upper box, positioning block, movable block, pull plate, discharge box, airbag, movable plate, and extrusion plate, so that the molybdenum disulfide lubricant inside the discharge box can be squeezed to the outside of the screw rod through a number of airbags, thereby preventing salt mist from crystallizing on the fixture thread, resulting in difficulty in subsequent sample installation or thread seizure.

[0017] 2. The present invention can achieve pretreatment of the outer surface of the steel bar to prevent rust on the surface of the steel bar from affecting the test results through the mutual cooperation between the components such as the active gear, concave mounting plate, A-type mounting plate, drive motor, cleaning gear, and internal gear ring; through the mutual cooperation between the components such as the movable motor, connecting plate, double-threaded screw, moving block, salt spray test chamber, connecting rod, absorbent cotton, etc., when the steel bar is tested in a continuous salt spray environment, salt spray droplets adhere to the outer surface of the steel bar, causing condensation on the surface of the sample, and by rubbing the surface of the steel bar, it can avoid the formation of a local electrolyte film on the surface of the steel bar, which accelerates pitting corrosion or galvanic corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a plan view of the component box structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the component box of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the component moving ring of the present invention;

[0022] Figure 5 This is a disassembled diagram of the upper box structure of the components of the present invention;

[0023] Figure 6 It is a right side view of the component moving ring structure of the present invention;

[0024] Figure 7 This is a right side view of the concave mounting plate structure of the component of the present invention;

[0025] Figure 8 This is a plan view of the inner gear ring structure of the component of the present invention;

[0026] Figure 9 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 10 for Figure 5 Enlarged view of point B in the middle.

[0028] Numbers in the figure: 1. Box body; 2. Tensile cylinder; 3. Moving ring; 4. Recovery groove; 5. Limit plate; 6. Steel bar; 7. Return spring; 8. Double-threaded screw; 9. Salt spray test chamber; 10. Linking rod; 11. Absorbent cotton; 12. Moving block; 13. Connecting plate; 14. Movable motor; 15. Reciprocating frame; 16. Mounting block; 17. Ring; 18. Swing rod; 19. Sleeve block; 20. Cleaning motor; 21. L-shaped connecting rod; 22. Discharge box; 23. Movable block; 24. Positioning block; 25. Upper box; 26. Airbag; 27. Moving plate; 28. A-type mounting plate; 29. Inner gear ring; 30. Concave mounting plate; 31. Cleaning gear; 32. Driving motor; 33. L-shaped welding rod; 34. Driving gear; 35. Pull plate. DETAILED DESCRIPTION

[0029] See also Figure 1-10 , the present invention provides a technical solution:

[0030] Example 1:

[0031] The material tensile strength test device suitable for high humidity and high salt environment includes a box body 1, two connecting plates 13 are fixedly connected near the top of the rear side of the inner cavity of the box body 1, and the two connecting plates 13 are symmetrically arranged on the left and right. Two circular frames 15 are fixedly connected between the two connecting plates 13, and the two circular frames 15 are symmetrically arranged front and back. There is a double-threaded screw 8 between the two connecting plates 13, and two moving blocks 12 are engaged on the outside of the double-threaded screw 8. The front and rear sides of the two moving blocks 12 are slidably connected to the adjacent circular frames 15. The bottom of the two moving blocks 12 They are all fixedly connected with a salt spray test box 9, a connecting rod 10 is fixedly connected to the bottom of the salt spray test box 9, an absorbent cotton 11 is fixedly connected to the front side of the connecting rod 10 near the bottom, a central axis is passed through the center of the double-threaded screw 8 and is fixedly connected to it, the left end of the central axis passes through the connecting plate 13 on the left and is fixedly connected to a movable motor 14, the right end of the central axis is inserted into the connecting plate 13 on the right, there is a steel bar 6 at the bottom of the double-threaded screw 8, the inner walls of the two absorbent cottons 11 are in contact with the outer side of the steel bar 6, and a recovery tank 4 is installed at the bottom of the inner cavity of the box body 1.

[0032] Example 2:

[0033] Two slides are provided on the rear side of the inner cavity of the box body 1. The two slides are symmetrically arranged. The inner cavities of the two slides are slidably connected to the limit plate 5. The front side of the limit plate 5 is fixedly connected to the moving ring 3. The inner cavity of the moving ring 3 is provided with an annular opening. The steel bar 6 runs through the inner cavity of the two annular openings. The two moving rings 3 are installed on the opposite side of each other with a stretching cylinder 2. The outer side of the power output shaft of the stretching cylinder 2 is sleeved with a return spring 7. The rear sides of the two stretching cylinders 2 are fixedly connected to the mounting blocks 16. The rear sides of the two mounting blocks 16 are fixedly connected to the inner wall of the box body 1. The corresponding sides of the two moving rings 3 are fitted with circular Ring 17, the inner cavity of the circular ring 17 is provided with three openings, and the three openings are arranged in a circular array with the center of the circular ring 17 as the center. The inner cavities of several openings are hinged with sleeve blocks 19, and the inner cavity of the sleeve block 19 is slidably connected with a swing rod 18. The corresponding ends of the several swing rods 18 are hinged on the movable ring 3. A protrusion is provided on the top of the circular ring 17, and a movable block 23 is hinged on one side of the protrusion near the center of the steel bar 6. A positioning block 24 is provided on the rear side of the movable block 23. A threaded groove is provided in the inner cavity of the movable block 23, and a slot is provided on the top of the movable block 23 and the positioning block 24, and the slot and the threaded groove are arranged to penetrate each other.

[0034] Example 3:

[0035] There is a cleaning motor 20 on the rear side of the positioning block 24, and an L-shaped connecting rod 21 is fixedly connected to the top of the cleaning motor 20. The other end of the L-shaped connecting rod 21 is fixedly connected to the upper box 25. The power output shaft of the cleaning motor 20 is fixedly connected to a screw rod. The outer side of the screw rod passes through the inner cavity of the threaded groove and engages with it. The top of the positioning block 24 is fixedly connected to the upper box 25. A plurality of placement slots are opened on the top of the upper box 25. The placement slots are linearly arranged from front to back. The inner cavity of the placement slot is provided with an air bag 26. The plurality of placement slots are linearly arranged from front to back. The inner cavity of the placement slot is provided with an air bag 26. The inner cavity of the placement slot is commonly penetrated by a movable plate 27, and a number of extrusion plates are fixedly connected to the left side of the movable plate 27. The several extrusion plates are all in contact with the adjacent airbags 26. A pull plate 35 is hinged on the front side of the movable plate 27, and the other side of the pull plate 35 is fixedly connected to the movable block 23. The top of the upper box 25 is fixedly connected to the discharge box 22, and a strip opening is provided at the bottom of the upper box 25. The strip opening and the placement slot are mutually connected. A discharge port is provided at the bottom of the discharge box 22, and molybdenum disulfide lubricant is provided inside the discharge box 22.

[0036] Example 4:

[0037] A mounting groove is provided on the side of the movable ring 3 on the right side away from the center of the steel bar 6, and the inner side wall bearing of the mounting groove is connected to the inner gear ring 29, and the inner gear ring 29 is meshed with a number of driving gears 34. A rotating shaft is passed through the center of the circle of the several driving gears 34 and is fixedly connected to it. An A-type mounting plate 28 is sleeved on the outer side of the rotating shaft at the top, and the A-type mounting plate 28 is fixedly connected to the movable ring 3. The right end of the rotating shaft at the top is fixedly connected to the driving motor 32, and a concave mounting plate 30 is jointly sleeved on the outer sides of the two rotating shafts at the bottom. The rear side of the concave mounting plate 30 is fixedly connected to the inner wall of the box body 1, and a cleaning gear 31 is jointly meshed on the corresponding side of the several driving gears 34. A cleaning brush is provided in the inner cavity of the cleaning gear 31, and the steel bar 6 passes through the inner cavity of the cleaning gear 31. An L-shaped welding rod 33 is fixedly connected to the top of the driving motor 32, and the other end of the L-shaped welding rod 33 is fixedly connected to the A-type mounting plate 28.

[0038] Working principle: First, the staff moves the steel bar 6 to the side of the movable ring 3 on the right side and passes through the adjacent annular opening. When the steel bar 6 enters the inner cavity of the annular opening on the right side, the drive motor 32 can be started. The drive motor 32 can drive the driving gear 34 located above to rotate through the power output shaft. When the driving gear 34 located above rotates, it can drive the inner gear ring 29 to rotate. When the inner gear ring 29 rotates, it can drive the remaining driving gears 34 to rotate. When several driving gears 34 rotate synchronously, they can drive the cleaning gear 31 to rotate. When the cleaning gear 31 rotates, the outer surface of the steel bar 6 can be preliminarily processed. When the movable motor 14 is started, it can drive the double-threaded screw 8 to rotate. When the double-threaded screw 8 rotates, it can drive the two The movable block 12 moves in the reverse direction. When the movable block 12 moves, the salt spray test box 9 can be driven to deflect. When the salt spray test box 9 moves, the absorbent cotton 11 can be driven to move synchronously through the connecting rod 10, thereby cleaning the outer surface of the steel bar 6 to avoid the formation of a local electrolyte film on the surface of the steel bar 6, accelerating pitting or galvanic corrosion. At the same time, when the cleaning motor 20 is started, it can drive the screw rod to rotate. When the screw rod rotates, it can drive the movable block 23 to move by engaging with the thread groove. When the movable block 23 moves, it can drive the ring 17 to rotate through the protrusion. When the ring 17 rotates, it can drive several swing rods 18 to swing by being hinged with several sets of blocks 19. When the swing rod 18 swings, the steel bar 6 can be fixed and clamped.

Claims

1. A material tensile strength testing device suitable for high humidity and high salt environments, comprising a box (1), characterized in that: Two connecting plates (13) are fixedly connected to the rear side of the inner cavity of the box body (1) near the top, and the two connecting plates (13) are symmetrically arranged on the left and right. Two circular frames (15) are fixedly connected between the two connecting plates (13), and the two circular frames (15) are symmetrically arranged on the front and back. There is a double-threaded screw (8) between the two connecting plates (13), and two moving blocks (12) are engaged on the outside of the double-threaded screw (8). The front and back sides of the two moving blocks (12) are both slidably connected to the adjacent circular frames (15). The bottoms of the two moving blocks (12) are fixedly connected to the salt spray test box (9). The bottom of the salt spray test box (9) is fixedly connected to a connecting rod (10), and the front side of the connecting rod (10) near the bottom is fixedly connected to an absorbent cotton (11). The center of the double-threaded screw (8) is penetrated by a central shaft and is fixedly connected to it. The left end of the central shaft penetrates the connecting plate (13) located on the left and is fixedly connected to a movable motor (14). The right end of the central shaft is plugged into the connecting plate (13) located on the right. There is a steel bar (6) at the bottom of the double-threaded screw (8). The inner side walls of the two absorbent cottons (11) are both in contact with the outer side of the steel bar (6). A recovery tank (4) is installed at the bottom of the inner cavity of the box body (1).

2. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 1, characterized in that: Two slide grooves are provided on the rear side of the inner cavity of the box body (1), and the two slide grooves are symmetrically arranged on the left and right. The inner cavities of the two slide grooves are both slidably connected to the limit plate (5), and the front side of the limit plate (5) is fixedly connected to the moving ring (3). The inner cavity of the moving ring (3) is provided with an annular opening, and the steel bar (6) passes through the inner cavities of the two annular openings.

3. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 2, characterized in that: A stretching cylinder (2) is installed on the opposite side of the two movable rings (3), a return spring (7) is sleeved on the outer side of the power output shaft of the stretching cylinder (2), and a mounting block (16) is fixedly connected to the rear side of the two stretching cylinders (2), and the rear sides of the two mounting blocks (16) are fixedly connected to the inner side wall of the box body (1).

4. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 3, characterized in that: A circular ring (17) is fitted on one side corresponding to the two movable rings (3). The inner cavity of the circular ring (17) is provided with three openings, and the three openings are arranged in a circular array with the center of the circular ring (17) as the center. The inner cavities of several of the openings are hinged with sleeve blocks (19), and the inner cavity of the sleeve blocks (19) is slidably connected with swing rods (18). The corresponding ends of several of the swing rods (18) are hinged on the movable ring (3).

5. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 4, characterized in that: A protrusion is provided on the top of the circular ring (17), and a movable block (23) is hingedly connected to one side of the protrusion near the center of the steel bar (6). A positioning block (24) is provided on the rear side of the movable block (23). A threaded groove is provided in the inner cavity of the movable block (23). The tops of the movable block (23) and the positioning block (24) are both provided with slots, and the slots and the threaded grooves are mutually connected.

6. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 5, characterized in that: A cleaning motor (20) is provided at the rear side of the positioning block (24), an L-shaped connecting rod (21) is fixedly connected to the top of the cleaning motor (20), the other end of the L-shaped connecting rod (21) is fixedly connected to the upper box (25), a screw rod is fixedly connected to the power output shaft of the cleaning motor (20), the outer side of the screw rod passes through the inner cavity of the thread groove and engages with it, the top of the positioning block (24) is fixedly connected to the upper box (25), and a plurality of placement slots are opened on the top of the upper box (25), and the plurality of placement slots are linearly arranged in sequence from front to back.

7. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 6, characterized in that: The inner cavity of the placement groove is provided with an air bag (26), and the inner cavities of several placement grooves are penetrated by a movable plate (27). The left side of the movable plate (27) is fixedly connected with several extrusion plates, and the several extrusion plates are all fitted with adjacent air bags (26). The front side of the movable plate (27) is hinged with a pull plate (35), and the other side of the pull plate (35) is fixedly connected to the movable block (23).

8. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 7, wherein the top of the upper box (25) is fixedly connected to a discharge box (22), the bottom of the upper box (25) is provided with a strip opening, the strip opening and the placement groove are mutually connected, the bottom of the discharge box (22) is provided with a discharge port, and molybdenum disulfide lubricant is provided inside the discharge box (22).

9. According to the material tensile strength testing device suitable for high humidity and high salt environment according to claim 8, a mounting groove is provided on the side of the movable ring (3) located on the right side away from the center of the steel bar (6), and the inner wall bearing of the mounting groove is connected to the inner gear ring (29), and the inner gear ring (29) is engaged with a plurality of driving gears (34), and a rotating shaft is passed through the center of the plurality of driving gears (34) and is fixedly connected thereto, and an A-type mounting plate (28) is sleeved on the outer side of the rotating shaft located above, and the A-type mounting plate (28) is fixedly connected to the movable ring (3).

10. The material tensile strength testing device suitable for high humidity and high salt environment according to claim 9, wherein the right end of the rotating shaft located above is fixedly connected to a driving motor (32), and the outer sides of the two rotating shafts located below are jointly sleeved with a concave mounting plate (30), and the rear side of the concave mounting plate (30) is fixedly connected to the inner wall of the box body (1), and the corresponding sides of several driving gears (34) are jointly engaged with a cleaning gear (31), and the inner cavity of the cleaning gear (31) is provided with a cleaning brush, and the steel bar (6) passes through the inner cavity of the cleaning gear (31), and the top of the driving motor (32) is fixedly connected to an L-shaped welding rod (33), and the other end of the L-shaped welding rod (33) is fixedly connected to the A-type mounting plate (28).

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