A strength detection device for new materials of roads and bridges

Abstract

The application provides a strength detection device for new road bridge materials, and relates to the technical field of material detection. The bottom of the trapezoidal frame is provided with a rotating seat through screw connection, the bottom of the rotating seat is integrally provided with a butt joint ring, the outside of the butt joint ring extends downward, a pressure sensor is fixedly arranged in the middle of the butt joint ring, a pressure pile is arranged outside the butt joint ring, and the bottom of the pressure pile is provided with a rotating ring. Through the setting of the moving frame seat, the sliding seat and the moving clamp block assembly, the adaptation and stable clamping of test pieces with different lengths are realized, the sliding seat spacing is adjusted to adapt to the length of the test piece, the clamp block is separated by pulling the limiting slide rod, the clamp block is automatically closed and fixed by using the spring rebound force after the test piece is placed, the deviation during detection is avoided, and the problems of poor adaptation and unstable clamping of the traditional device are solved.

Description

Technical Field

[0001] This invention relates to the field of materials testing technology, and in particular to a strength testing device for new road and bridge materials. Background Technology

[0002] In the process of research and development, formulation optimization and engineering application of new materials for roads and bridges, it is necessary to conduct compressive strength tests on the long strip specimens after the materials are formed in order to verify whether their mechanical strength meets the design and construction requirements.

[0003] During testing, the prepared long strip specimen is placed vertically in the compressive strength testing device. Vertical pressure is applied at a uniform speed until the specimen fails. The ultimate pressure is recorded and the compressive strength is calculated, thus providing data support for the performance evaluation and engineering applicability of new materials.

[0004] The testing devices currently in use mainly rely on direct hydraulic testing, which has limited adaptability. They are also inconvenient to place due to the weight of building materials and lack the ability to simulate natural environments. Summary of the Invention

[0005] In view of the above, the present invention addresses the shortcomings of the prior art by providing a strength testing device for new road and bridge materials.

[0006] This invention provides a strength testing device for new road and bridge materials, specifically comprising: a base, a pressure applying device fixedly disposed at the top center of the base, a main hydraulic cylinder fixedly disposed at the top center of the pressure applying device, a trapezoidal frame fixedly disposed at the telescopic end of the main hydraulic cylinder, a screw-on seat installed at the bottom of the trapezoidal frame via a threaded connection, a docking ring integrally disposed at the bottom of the screw-on seat, the docking ring extending outward downwards from the outside, a pressure sensor fixedly disposed at the center of the docking ring; a pressure measuring pile sleeved on the outside of the docking ring, a limiting pin threadedly passing through the upper outside of the pressure measuring pile; two sets of guide slides integrally disposed at the top center of the base, a movable frame seat slidably disposed on the top of the guide slides, the movable frame seat being a U-shaped structure with the opening facing backwards; a sliding seat slidably disposed in the middle of the movable frame seat, and lifting seats disposed above the middle of the movable frame seat and above the sliding seat; a row of support piles disposed below each lifting seat, the top of the support piles being tapered, the tops of the two rows of support piles passing through the movable frame seat and the sliding seat respectively, and springs sleeved on them and fixed to the bottom of the lifting seat; a processing chamber fixedly disposed on the rear side of the top of the base.

[0007] Optionally, the base has a drainage groove that slopes downwards and forwards in the middle; a transmission belt is rotatably mounted on the top left side of the base, and a drive motor is mounted on the upper rear left side of the base to drive the transmission belt; a connecting piece is fixedly mounted on the outside of the movable frame, and the connecting piece is fixed to the outside of the transmission belt.

[0008] Optionally, two sets of guide rods are fixedly installed on the top of the trapezoidal frame, and the guide rods pass through the top of the pressure application device; six pairs of triangular grooves are opened around the outside of the screw-on base, and each pair of triangular grooves is a 45-degree groove with a reverse inclination; the inner side of the top of the pressure measuring pile can fit against the bottom of the pressure sensor.

[0009] Optionally, a right-extending auxiliary lifting frame is fixedly installed on the top front side of the base; a sliding frame is slidably installed on the top of the auxiliary lifting frame; a lifting hydraulic cylinder is fixedly installed in the middle of the sliding frame, a connecting frame is fixedly installed at the telescopic end of the lifting hydraulic cylinder, two sets of lifting rods are fixedly installed on both sides of the bottom of the connecting frame, and a lifting rope is fixedly installed through the lower end of each lifting rod through the sliding frame; a handle is fixedly installed on the front side of the sliding frame.

[0010] Optionally, side stops are fixedly provided at both ends of the lifting seat; two sets of movable clamping blocks are slidably provided outside the lifting seat, and two sets of connecting rods are fixedly provided outside each movable clamping block, with each connecting rod fitted with a spring and passing through the side stops.

[0011] Optionally, an assembly frame is fixedly provided at the outer end of the connecting rod in front of the movable frame, and an assembly sub-frame is fixedly provided at the outer end of the connecting rod above the sliding seat. A limit slide rod is fixedly provided at the rear end of the assembly frame, and the limit slide rod is slidably connected to the assembly sub-frame.

[0012] Optionally, a trigger rod is fixedly installed at the bottom corner of each of the movable frame seats; three sets of proximity sensors are fixedly installed on the adjacent surfaces of the two sets of guide slides, and the proximity sensors can detect the approach of the trigger rod.

[0013] Optionally, a sprayer is fixedly installed in the upper middle of the interior of the treatment chamber, and a water pipe is installed at the top of the sprayer, extending out of the treatment chamber and connected to a water pump; two sets of heating plates are fixedly installed in the upper interior of the treatment chamber.

[0014] Optionally, an air collection chamber is fixedly installed at the top rear end of the base, and the air collection chamber has a narrow front and wide rear constriction structure; a row of fans is fixedly installed on the rear side of the air collection chamber.

[0015] The beneficial effects are as follows: By setting up a movable frame, sliding seat, and movable clamping block assembly, the device can adapt to and stably clamp specimens of different lengths. The sliding seat spacing can be adjusted to match the specimen length. Pulling the limit slide bar separates the clamping blocks. After placing the specimen, the spring rebound force allows the clamping blocks to automatically close and fix, avoiding deviation during testing and solving the problems of poor adaptation and unstable clamping in traditional devices.

[0016] By setting up an auxiliary lifting frame, lifting hydraulic cylinder and transmission belt assembly, the specimen can be conveniently lifted and automatically transferred. The lifting mechanism lifts the specimen and moves it to the moving frame, and then the drive motor drives the moving frame, combined with the proximity sensor, to accurately move it to the testing station. No manual handling is required, which improves efficiency and solves the problem of inconvenient specimen placement.

[0017] By setting up a processing chamber, sprayer, heating plate and gas collection chamber components, diversified environmental simulation testing can be achieved. The sprayer simulates rain and water immersion, the heating plate simulates high temperature environment, and the fan and gas collection chamber blow clean equipment, which solves the problems of traditional devices having single detection and lack of environmental simulation. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown; Figure 2 A schematic diagram of the isometric structure of an embodiment of the present invention is shown; Figure 3 A schematic diagram of the lifting state structure according to an embodiment of the present invention is shown; Figure 4 A side-view structural schematic diagram of an embodiment of the present invention is shown; Figure 5 A three-dimensional structural schematic diagram of the movable frame base in an embodiment of the present invention is shown; Figure 6 A schematic diagram of the tilting structure of the movable frame in an embodiment of the present invention is shown; Figure 7 This diagram illustrates the clamping state structure of the movable frame in an embodiment of the present invention. Figure 8 A schematic diagram of the assembly structure of the pressure-measuring pile in an embodiment of the present invention is shown.

[0019] List of reference numerals in the attached diagram: 1. Base; 101. Guide slide; 102. Transmission belt; 103. Drive motor; 104. Proximity sensor; 2. Pressure application device; 201. Main hydraulic cylinder; 202. Trapezoidal frame; 203. Guide rod; 204. Screw-on seat; 205. Triangular groove; 206. Connecting ring; 207. Pressure sensor; 208. Pressure measuring pile; 209. Limit pin; 3. Auxiliary lifting frame; 301. Sliding frame; 302. Lifting hydraulic cylinder; 303. Connecting frame; 304. 305. Lifting rod; 306. Lifting rope; 4. Handle; 401. Moving frame; 402. Connecting plate; 403. Sliding seat; 404. Lifting seat; 405. Support pile; 406. Side guard; 407. Moving clamp; 408. Connecting rod; 409. Assembly frame; 410. Assembly sub-frame; 411. Limiting slide rod; 412. Trigger rod; 5. Processing chamber; 501. Sprayer; 502. Water pump; 503. Heating plate; 6. Gas collection chamber; 601. Fan. Detailed Implementation

[0020] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0021] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 8 As shown: This invention proposes a strength testing device for new road and bridge materials, comprising: a base 1, a pressure applying device 2 fixedly disposed at the top center of the base 1, a main hydraulic cylinder 201 fixedly disposed at the top center of the pressure applying device 2, a trapezoidal frame 202 fixedly disposed at the telescopic end of the main hydraulic cylinder 201, a screw-on seat 204 threadedly installed at the bottom of the trapezoidal frame 202, a docking ring 206 integrally disposed at the bottom of the screw-on seat 204, the docking ring 206 extending downward outward, a pressure sensor 207 fixedly disposed in the middle of the docking ring 206; a pressure measuring pile 208 sleeved on the outside of the docking ring 206, the upper part of the pressure measuring pile 208 threadedly passing through... A limit pin 209 is provided; two sets of guide slides 101 are integrally provided in the middle of the top of the base 1, and a movable frame seat 4 is slidably provided on the top of the guide slides 101. The movable frame seat 4 is a U-shaped structure with the opening facing backward; a sliding seat 402 is slidably provided in the middle of the movable frame seat 4, and a lifting seat 403 is provided above the middle of the movable frame seat 4 and above the sliding seat 402; a row of support piles 404 is provided below each lifting seat 403. The top of the support piles 404 is narrowed. The tops of the two rows of support piles 404 pass through the movable frame seat 4 and the sliding seat 402 respectively, and are fitted with springs and fixed to the bottom of the lifting seat 403; a processing chamber 5 is fixedly provided on the rear side of the top of the base 1.

[0022] The base 1 has a drainage groove that slopes downwards and forwards in the middle; a transmission belt 102 is rotatably mounted on the top left side of the base 1, and a drive motor 103 is mounted on the upper rear left side of the base 1 to drive the transmission belt 102; a connecting piece 401 is fixedly mounted on the outside of the movable frame 4, and the connecting piece 401 is fixed to the outside of the transmission belt 102.

[0023] Two sets of guide rods 203 are fixedly installed on the top of the trapezoidal frame 202, and the guide rods 203 pass through the top of the pressure application device 2; six pairs of triangular grooves 205 are opened around the outside of the screw-on seat 204, and each pair of triangular grooves 205 is a 45-degree groove with a reverse inclination; the inner side of the top of the pressure measuring pile 208 can fit against the bottom of the pressure sensor 207.

[0024] The base 1 has a right-extending auxiliary lifting frame 3 fixedly installed on the top front side; a sliding frame 301 is slidably installed on the top of the auxiliary lifting frame 3; a lifting hydraulic cylinder 302 is fixedly installed in the middle of the sliding frame 301; a connecting frame 303 is fixedly installed at the telescopic end of the lifting hydraulic cylinder 302; two sets of lifting rods 304 are fixedly installed on both sides of the bottom of the connecting frame 303; and a lifting rope 305 is fixedly installed at the lower end of each lifting rod 304 through the sliding frame 301; and a handle 306 is fixedly installed on the front side of the sliding frame 301.

[0025] Both ends of the lifting seat 403 are fixedly provided with side guards 405; two sets of movable clamps 406 are slidably provided on the outside of the lifting seat 403, and two sets of connecting rods 407 are fixedly provided on the outside of each movable clamp 406. Each connecting rod 407 is fitted with a spring and passes through the side guards 405.

[0026] Among them, the outer end of the connecting rod 407 in front of the movable frame 4 is fixedly provided with a connecting frame 408, the outer end of the connecting rod 407 above the sliding seat 402 is fixedly provided with a connecting sub-frame 409, the rear end of the connecting frame 408 is fixedly provided with a limiting slide rod 410, and the limiting slide rod 410 is slidably connected with the connecting sub-frame 409.

[0027] Among them, trigger rods 411 are fixedly installed at the bottom corners of the movable frame 4; three sets of proximity sensors 104 are fixedly installed on the adjacent surfaces of the two sets of guide slides 101, and the proximity sensors 104 can detect the approach of the trigger rods 411.

[0028] A sprayer 501 is fixedly installed in the upper middle of the interior of the treatment chamber 5. A water pipe is installed on the top of the sprayer 501, which extends out of the treatment chamber 5 and is connected to a water pump 502. Two sets of heating plates 503 are fixedly installed in the upper interior of the treatment chamber 5.

[0029] Among them, an air collection chamber 6 is fixedly installed at the top rear end of the base 1. The air collection chamber 6 has a narrow front and wide rear constriction structure. A row of fans 601 is fixedly installed on the rear side of the air collection chamber 6.

[0030] Before use, the new road and bridge materials such as steel and concrete to be tested are made into standard long strip specimens. The specimens are then transported to the right entrance of the auxiliary lifting frame 3 by a trailer. At the same time, the sliding frame 301 is moved horizontally to the top of the specimen to complete the preparation work before hoisting. After positioning, retract the lifting hydraulic cylinder 302 and slowly lower the lifting rope 305 to stably place the lifting rope 305 on both sides of the specimen; then extend the lifting hydraulic cylinder 302, and lift the specimen smoothly through the cooperation of the lifting rod 304 and the lifting rope 305. Then move the lifted specimen horizontally to the top of the moving frame 4 to complete the transfer and hoisting of the specimen. After the specimen is positioned above the movable frame 4, the assistant pulls the limiting slide bars 410 on both sides outwards, causing the movable clamping blocks 406 on both sides to separate synchronously. After the specimen is placed stably on the support position between the movable clamping blocks 406 on both sides, the hanging rope 305 is removed. The installation position of the sliding seat 402 can be adjusted according to the actual length of the specimen to accommodate specimens of different specifications. The spring on the outside of the connecting rod 407 can provide continuous clamping force, causing the movable clamping blocks 406 on both sides to automatically move closer together, thereby achieving centered fixation and stable clamping of the specimen. After the specimen is clamped, the drive motor 103 is started, which drives the transmission belt 102 to rotate, and then drives the moving frame 4 to move horizontally as a whole through the connecting piece 401. The moving frame 4 with the specimen clamped is moved to the lower middle of the pressure device 2, that is, the preset pressure resistance test position. During the process, the proximity sensor 104 and the connecting piece 401 cooperate to achieve precise positioning during the transfer process. After the specimen is positioned at the testing station, the main hydraulic cylinder 201 is activated, driving the trapezoidal frame 202 to descend vertically. Stable vertical pressure is applied to the specimen through the pressure testing pile 208 to complete the compressive performance test of the material. During the test, the pressure sensor 207 can detect and provide feedback on the applied pressure value in real time. When the applied pressure reaches the design standard requirements, if the specimen does not show any failure such as breakage or obvious deformation, it can be determined that the compressive performance of the specimen is qualified and meets the requirements for engineering use.

[0031] Example 2: Based on Example 1, some materials may be affected by rainwater and their quality may be reduced. If it is necessary to simulate the rain immersion condition, an external water source can be connected through water pump 502 to deliver water to sprayer 501 and spray it evenly to continuously spray and immerse the surface of the specimen to test the effect of the water environment on the compressive strength of the material.

[0032] Example 3: Based on Example 1, in summer, exposure to the sun and heat absorption by the ground may cause the material to reach a temperature of nearly 100 degrees Celsius. To simulate high-temperature working conditions in summer, the specimen can be heated by heating plate 503 to simulate the changes in material properties under high-temperature service environment.

[0033] The specific usage and function of this embodiment: In this invention, when in use, the material (such as steel or concrete) is made into a long strip specimen, and the specimen is moved to the right entrance of the auxiliary lifting frame 3 by a trailer. Then the sliding frame 301 is moved above the specimen. The lifting hydraulic cylinder 302 is retracted to lower the lifting rope 305. After the lifting rope 305 is placed on both sides of the specimen, the lifting hydraulic cylinder 302 is extended to lift the specimen in conjunction with the lifting rod 304 and the lifting rope 305. The specimen is then moved above the moving frame 4. At this time, the auxiliary personnel pull open the limit sliding rods 410 on both sides to separate the moving clamps 406 on both sides. The specimen is then placed between the moving clamps 406 on both sides, and the lifting rope 305 is detached from the specimen. The position of the sliding seat 402 can be adjusted according to the length of the specimen to adapt to the specimen length. The specimen is fixed by the moving clamps 406 on both sides. The spring outside the connecting rod 407 provides clamping force to bring the moving clamps 406 on both sides together, fix and clamp the specimen, and naturally center it. The drive motor 103 drives the transmission belt 102 to rotate, which in turn drives the movable frame 4 to move in conjunction with the connecting piece 401, moving the movable frame 4 to the detection position, that is, the middle and lower part of the pressure device 2; the proximity sensor 104 and the connecting piece 401 provide positioning function. The main hydraulic cylinder 201 is activated to drive the trapezoidal frame 202 to descend. Pressure is applied to the specimen using the pressure measuring pile 208 to perform a compressive strength test and detect the compressive strength of the material. The pressure sensor 207 can detect the feedback pressure. If the specimen does not break or deform when the pressure reaches the required level, it is qualified and can be used. The specimen can be moved into the treatment chamber 5. A pipe is set outside the water pump 502 to connect to the water source. Water is pumped into the sprayer 501 and sprayed out from the sprayer 501 onto the surface of the specimen to simulate rain. After soaking the specimen, the effect of rain on the pressure resistance is tested. Alternatively, heating plate 503 can be used to heat the specimen to simulate the hot ground temperature in summer; Fan 601 draws in outside air, compresses it in air chamber 6, and then accelerates its discharge to sweep the surface of base 1.

Claims

1. A strength testing device for new road and bridge materials, characterized in that, include: The base (1) has a pressure device (2) fixedly installed at the top center of the base (1). A main hydraulic cylinder (201) is fixedly installed at the top center of the pressure device (2). A trapezoidal frame (202) is fixedly installed at the telescopic end of the main hydraulic cylinder (201). A spool seat (204) is installed at the bottom of the trapezoidal frame (202) by threaded connection. A docking ring (206) is integrally installed at the bottom of the spool seat (204). The docking ring (206) extends outward downward from the outside. A pressure sensor (207) is fixedly installed in the middle of the docking ring (206). A pressure measuring pile (208) is sleeved on the outside of the docking ring (206). A limit pin (209) is threaded through the top of the pressure measuring pile (208). Two sets of guide slides (101) are integrally set in the middle of the top of the base (1). A movable frame seat (4) is slidably set on the top of the guide slide (101). The movable frame seat (4) is a U-shaped structure with the opening facing backward. A sliding seat (402) is slidably set in the middle of the movable frame seat (4). A lifting seat (403) is set above the middle of the movable frame seat (4) and above the sliding seat (402). A row of support piles (404) is set below the lifting seat (403). The top of the support piles (404) is narrowed. The tops of the two rows of support piles (404) pass through the movable frame seat (4) and the sliding seat (402) respectively and are fitted with springs and fixed to the bottom of the lifting seat (403). A processing chamber (5) is fixedly set on the rear side of the top of the base (1).

2. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, The base (1) has a drainage groove that slopes downwards and forwards in the middle; a transmission belt (102) is rotatably installed on the top left side of the base (1); a drive motor (103) is installed on the upper left rear side of the base (1) to drive the transmission belt (102); a connecting piece (401) is fixedly installed on the outside of the movable frame (4), and the connecting piece (401) is fixed on the outside of the transmission belt (102).

3. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, The top of the trapezoidal frame (202) is fixedly provided with two sets of guide rods (203), which pass through the top of the pressure device (2); the outer side of the screw-on seat (204) is provided with six pairs of triangular grooves (205), each pair of triangular grooves (205) being a 45-degree groove with a reverse inclination; the inner side of the top of the pressure measuring pile (208) can fit against the bottom of the pressure sensor (207).

4. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, A right-extending auxiliary lifting frame (3) is fixedly installed on the top front side of the base (1); a sliding frame (301) is slidably installed on the top of the auxiliary lifting frame (3); a lifting hydraulic cylinder (302) is fixedly installed in the middle of the sliding frame (301); a connecting frame (303) is fixedly installed at the telescopic end of the lifting hydraulic cylinder (302); two sets of lifting rods (304) are fixedly installed on both sides of the bottom of the connecting frame (303); a lifting rope (305) is fixedly installed through the sliding frame (301) at the lower end of each lifting rod (304); a handle (306) is fixedly installed on the front side of the sliding frame (301).

5. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, Both ends of the lifting seat (403) are fixedly provided with side guards (405); two sets of movable clamps (406) are slidably provided outside the lifting seat (403), and two sets of connecting rods (407) are fixedly provided outside each movable clamp (406). The connecting rods (407) are all fitted with springs and pass through the side guards (405).

6. The strength testing device for new road and bridge materials as described in claim 5, characterized in that, A connecting frame (408) is fixedly installed at the outer end of the connecting rod (407) in front of the movable frame (4), and a connecting sub-frame (409) is fixedly installed at the outer end of the connecting rod (407) above the sliding seat (402). A limiting slide rod (410) is fixedly installed at the rear end of the connecting frame (408), and the limiting slide rod (410) is slidably connected to the connecting sub-frame (409).

7. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, Trigger rods (411) are fixedly installed at the bottom corners of the movable frame (4); three sets of proximity sensors (104) are fixedly installed on the adjacent surfaces of the two sets of guide slides (101), and the proximity sensors (104) can sense the approach of the trigger rods (411).

8. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, A sprayer (501) is fixedly installed in the middle of the upper part of the processing chamber (5). A water pipe is installed on the top of the sprayer (501) and extends out of the processing chamber (5) to connect to a water pump (502). Two sets of heating plates (503) are fixedly installed in the upper part of the processing chamber (5).

9. The strength testing device for new road and bridge materials as described in claim 1, characterized in that, An air collection chamber (6) is fixedly installed at the top rear end of the base (1). The air collection chamber (6) has a narrow front and wide back opening structure. A row of fans (601) is fixedly installed on the rear side of the air collection chamber (6).

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