Road pavement compressive strength detection device

Abstract

The utility model discloses a road pavement compressive strength detection device, and relates to the technical field of engineering detection, the road pavement compressive strength detection device comprises a base, the top of the base is symmetrically and fixedly provided with support columns, the top ends of the support columns are fixedly connected with a top plate, and the center of the top plate is fixedly provided with a hydraulic cylinder; a hydraulic cylinder is arranged on the base, a connecting plate is fixedly connected to the telescopic end of the hydraulic cylinder, a detection mechanism for detecting pressure is arranged at the bottom of the connecting plate, a protection mechanism is arranged on the outer side of the connecting plate, and a supporting mechanism for placing a concrete sample block is arranged between the base and the top plate. And automatic protection can be carried out when the sample core is detected by arranging the protection mechanism, and disintegrating slag is automatically cleaned through the supporting mechanism after the sample core is detected, so that the next detection is facilitated, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering detection, in particular to a road pavement compressive strength detection device. Background Art

[0002] The pavement is a layered structure paved on the roadbed with various materials for vehicles to travel. The pavement is the main component of the highway, and its quality will directly affect the driving speed, safety and transportation cost. A good pavement for a high-grade highway can ensure that vehicles can travel at high speed, safely and comfortably, and can also save a lot of transportation costs and give full play to the functions of the high-grade highway. The pavement structure layer is generally composed of a surface layer, a base layer, and a cushion layer. The materials included in the roadbed base layer include crushed stone, gravel, and stabilized soil. The roadbed material needs to be screened, tested and processed before the roadbed base layer can be laid normally. The existing roadbed and pavement material strength detection system takes samples from the corresponding sample cores and then performs pressure tests to see if the sample cores can bear the corresponding pressure.

[0003] In the prior art, when a sample core is pressure tested, the sample core is easily crushed and splashed, which may easily cause safety hazards. In addition, when the next pressure test is performed, the sample core fragments from the previous test need to be cleaned up before the test, which reduces the detection efficiency. Utility Model Content

[0004] The technical solution of the present utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present utility model is to provide a road pavement compressive strength testing device to solve the problem proposed in the above-mentioned background technology that when the sample core is pressure tested, the sample core is easily crushed and splashed, which may easily cause safety hazards, and when the next pressure test is carried out, the sample core fragments of the previous test need to be cleaned up before testing, which reduces the detection efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a road pavement compressive strength testing device, comprising a base, the top of the base is symmetrically fixed with support columns, the tops of the support columns are fixedly connected to a top plate, a hydraulic cylinder is fixedly installed at the center of the top plate, the telescopic end of the hydraulic cylinder is fixedly connected to a connecting plate, a detection mechanism for detecting pressure is provided at the bottom of the connecting plate, a protective mechanism is provided on the outside of the connecting plate, and a supporting mechanism for placing concrete samples is provided between the base and the top plate.

[0006] Preferably, the detection mechanism includes a pressure sensor fixedly installed on the bottom of the connecting plate, the bottom of the pressure sensor is fixedly connected to a pressure plate, the top of the top plate is installed with a display instrument, and the display instrument is electrically connected to the pressure sensor.

[0007] Preferably, the protective mechanism includes a protective cover mounted on the telescopic end of the hydraulic cylinder and the outside of the connecting plate, the top of the connecting plate is symmetrically fixed with limiting columns, the tops of the limiting columns are fixedly connected with connecting blocks, a first spring mounted on the outside of the limiting columns is fixedly connected between the connecting block and the connecting plate, and a push plate is fixedly provided on the side wall of the protective cover.

[0008] Preferably, a movable groove is provided at the top of the protective cover, which is located outside the telescopic end of the hydraulic cylinder, and the bottom of the protective cover is an open structure.

[0009] Preferably, the supporting mechanism includes a first supporting plate fixedly arranged at the top center of the base, a second supporting plate hingedly arranged on the top of the first supporting plate, a groove is opened inside one end of the first supporting plate, an airbag is fixedly arranged on the inner wall of the bottom end of the groove, a fixing column is fixedly arranged on the bottom end of the top plate on one side of the hydraulic cylinder, a second spring is fixedly connected to the inner wall of the top end of the fixing column, a piston slidably matched with the fixing column is fixedly connected to the bottom of the second spring, a connecting rod is fixedly connected to the bottom of the piston, an inner rod slidably matched with the connecting rod is arranged inside the connecting rod, and the bottom end of the inner rod is fixedly connected to the top end of the push plate.

[0010] Preferably, a waste residue groove is provided inside the base at one side of the first support plate and the second support plate.

[0011] Preferably, the bottom of the fixing column is an open structure, and a hose is fixedly connected between the upper end of the fixing column and the airbag.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model is provided with a protection mechanism. When the hydraulic cylinder is started, the telescopic end of the hydraulic cylinder drives the connecting plate to move downward, and the connecting plate drives the pressing plate to move downward through the pressure sensor, and the connecting plate drives the outer protective cover to move downward, and the bottom of the protective cover will first contact the top of the second supporting plate and cover the outer side of the pavement concrete sample core, and the pressing plate continues to move downward and squeeze the sample core, and at the same time, the connecting plate drives the limiting column to slide downward, and the limiting column drives the top connecting block to move downward and squeeze the first spring until the sample core is crushed, so that automatic protection can be performed through the protective cover to avoid the safety hazard caused by the splash of the crushed sample core;

[0014] The utility model is provided with a supporting mechanism, and after the concrete sample core is detected, the hydraulic cylinder is started to reset its telescopic end, and the telescopic end of the hydraulic cylinder drives the connecting plate, the pressure sensor, the pressure plate and the protective cover to move upward, and the protective cover drives the inner rod to slide upward and reset in the connecting rod through the push plate, and the telescopic end of the hydraulic cylinder continues to contract, and the inner rod pushes the connecting rod, so that the piston at the top of the hydraulic cylinder slides upward in the fixed column, and the piston squeezes the second spring and transmits the upper gas to the airbag through the hose, and the airbag expands after inflation to push the second supporting plate to rotate and tilt on the top of the first supporting plate, so that the sample debris on the top of the second supporting plate rolls to the waste residue tank for cleaning and collection, thereby automatically cleaning the sample core debris formed after the detection, facilitating the next detection, and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a front view cross-sectional structural diagram of the protection mechanism of the utility model;

[0017] Figure 3 It is a schematic diagram of the front cross-sectional structure of the first support plate and the second support plate of the utility model;

[0018] Figure 4 It is a front view cross-sectional structural schematic diagram of the fixed column of the utility model.

[0019] In the figure: 1, base; 101, waste residue tank; 2, support column; 3, top plate; 4, display instrument; 5, hydraulic cylinder; 501, connecting plate; 502, pressure sensor; 503, pressure plate; 504, protective cover; 505, limit column; 506, connecting block; 507, first spring; 508, movable groove; 509, push plate; 6, first support plate; 601, second support plate; 602, groove; 603, airbag; 604, fixed column; 605, second spring; 606, piston; 607, connecting rod; 608, inner rod; 609, hose. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4The utility model provides a technical solution: a road pavement compressive strength testing device, comprising a base 1, a support column 2 is symmetrically fixedly arranged on the top of the base 1, a top plate 3 is fixedly connected to the top of the support column 2, a hydraulic cylinder 5 is fixedly installed at the center of the top plate 3, a connecting plate 501 is fixedly connected to the telescopic end of the hydraulic cylinder 5, a detection mechanism for detecting pressure is arranged at the bottom of the connecting plate 501, a protective mechanism is arranged on the outer side of the connecting plate 501, and a supporting mechanism for placing a concrete sample block is arranged between the base 1 and the top plate 3.

[0022] The detection mechanism includes a pressure sensor 502 fixedly installed at the bottom of the connecting plate 501, the bottom of the pressure sensor 502 is fixedly connected to a pressure plate 503, and a display instrument 4 is installed on the top of the top plate 3. The display instrument 4 is electrically connected to the pressure sensor 502. The pressure resistance of the sample core can be detected by the detection mechanism.

[0023] The protection mechanism includes a protection cover 504 sleeved on the telescopic end of the hydraulic cylinder 5 and the outside of the connecting plate 501, the top of the connecting plate 501 is symmetrically fixed with a limit column 505, the top of the limit column 505 is fixedly connected with a connecting block 506, and a first spring 507 sleeved on the outside of the limit column 505 is fixedly connected between the connecting block 506 and the connecting plate 501, and a push plate 509 is fixedly provided on the side wall of the protection cover 504. The protection mechanism can be used for automatic protection when detecting the sample core.

[0024] The top of the protective cover 504 is located outside the telescopic end of the hydraulic cylinder 5 and is provided with a movable groove 508, and the bottom of the protective cover 504 is an open structure, which is convenient for the protective cover 504 to move longitudinally outside the hydraulic cylinder 5 through the movable groove 508, and to protect the outside of the sample core through the protective cover 504.

[0025] The supporting mechanism includes a first supporting plate 6 fixedly arranged at the top center of the base 1, a second supporting plate 601 hingedly connected to the first supporting plate 6 is arranged on the top of the first supporting plate 6, a groove 602 is opened inside one end of the first supporting plate 6, an airbag 603 is fixedly arranged on the inner wall of the bottom end of the groove 602, the bottom end of the top plate 3 is located on one side of the hydraulic cylinder 5 and a fixing column 604 is fixedly arranged, a second spring 605 is fixedly connected to the inner wall of the top end of the fixing column 604, a piston 606 slidingly matched with the fixing column 604 is fixedly connected to the bottom of the second spring 605, a connecting rod 607 is fixedly connected to the bottom of the piston 606, an inner rod 608 slidingly matched with the connecting rod 607 is arranged inside the connecting rod 607, and the bottom end of the inner rod 608 is fixedly connected to the top of the push plate 509. The supporting mechanism can automatically clean up the debris after the sample core is detected, so as to facilitate the next detection.

[0026] A waste residue trough 101 is provided inside the base 1 on one side of the first support plate 6 and the second support plate 601, so that when the second support plate 601 rotates on top of the first support plate 6, the sample core debris can be transported to the waste residue trough 101 for collection and cleaning.

[0027] The bottom of the fixed column 604 is an open structure, and a hose 609 is fixedly connected between the upper end of the fixed column 604 and the airbag 603 to prevent negative pressure from forming at the bottom when the piston 606 slides in the fixed column 604, and the fixed column 604 and the airbag 603 transport gas through the hose 609.

[0028] Working principle: When using the road pavement compressive strength detection device, first, place the pavement concrete sample core to be detected on the top of the second support plate 601, then start the hydraulic cylinder 5, the telescopic end of the hydraulic cylinder 5 drives the connecting plate 501 to move downward, the connecting plate 501 drives the pressure plate 503 to move downward through the pressure sensor 502, and the connecting plate 501 drives the outer protective cover 504 to move downward, the bottom of the protective cover 504 will first contact the top of the second support plate 601, and cover the outside of the pavement concrete sample core, and the pressure plate 503 continues to move downward and squeeze the sample core, while the connecting plate 501 drives the limiting column 505 to slide downward, the limiting column 505 drives the top connecting block 506 to move downward and squeeze the first spring 507 until the sample core is crushed, at this time, it can be protected by the protective cover 504 to avoid the crushed sample core from splashing and causing safety hazards.

[0029] When the protective cover 504 moves downward, it drives the push plate 509 on the outer wall to move downward, and the push plate 509 drives the inner rod 608 on the top to slide down in the connecting rod 607, and the inner rod 608 slides in the limiting groove of the outer wall of the connecting rod 607 through the limiting block on the outer wall for limiting.

[0030] During the extrusion process, the pressure sensor 502 can monitor the pressure applied by the pressing plate 503 in real time, and send the data to the display instrument 4 for display and storage, thereby detecting the maximum pressure that the concrete sample core can withstand.

[0031] After the concrete sample core is detected, the hydraulic cylinder 5 is started to reset its telescopic end, and the telescopic end of the hydraulic cylinder 5 drives the connecting plate 501, the pressure sensor 502, the pressure plate 503 and the protective cover 504 to move upward, and the protective cover 504 drives the inner rod 608 to slide upward in the connecting rod 607 through the push plate 509 to reset, and the telescopic end of the hydraulic cylinder 5 continues to shrink, and the inner rod 608 pushes the connecting rod 607, so that the piston 606 at its top slides upward in the fixed column 604, and the piston 606 squeezes the second spring 605 while conveying the upper gas to the airbag 603 through the hose 609. After being inflated, the airbag 603 expands and pushes the second support plate 601 to rotate and tilt on the top of the first support plate 6, so that the sample debris on the top of the second support plate 601 rolls to the waste residue tank 101 for cleaning and collection, so as to facilitate the next detection;

[0032] When testing again, start the hydraulic cylinder 5 to move the protective cover 504 downward, and the protective cover 504 drives the outer wall push plate 509 downward, and the push plate 509 drives the top inner rod 608 downward, so that the second spring 605 pushes the piston 606 to slide and reset. At this time, the gas in the airbag 603 is drawn back to the fixed column 604 through the hose 609, and the airbag 603 is reset, so that the second support plate 601 is rotated and reset to fit the first support plate 6, and the sample core can be placed on the second support plate 601 for testing.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A road pavement compressive strength testing device, comprising a base (1), characterized in that: Support columns (2) are symmetrically fixedly arranged on the top of the base (1), the top ends of the support columns (2) are fixedly connected to a top plate (3), a hydraulic cylinder (5) is fixedly installed at the center of the top plate (3), the telescopic end of the hydraulic cylinder (5) is fixedly connected to a connecting plate (501), a detection mechanism for detecting pressure is arranged at the bottom of the connecting plate (501), a protective mechanism is arranged on the outside of the connecting plate (501), and a support mechanism for placing a concrete sample is arranged between the base (1) and the top plate (3).

2. A road pavement compressive strength testing device according to claim 1, characterized in that: The detection mechanism comprises a pressure sensor (502) fixedly mounted on the bottom of a connecting plate (501); the bottom of the pressure sensor (502) is fixedly connected to a pressure plate (503); a display instrument (4) is mounted on the top of the top plate (3); and the display instrument (4) is electrically connected to the pressure sensor (502).

3. A road pavement compressive strength testing device according to claim 1, characterized in that: The protection mechanism comprises a protection cover (504) sleeved on the telescopic end of the hydraulic cylinder (5) and the outside of the connecting plate (501); the top of the connecting plate (501) is symmetrically fixedly provided with a limit column (505); the top of each of the limit columns (505) is fixedly connected to a connecting block (506); a first spring (507) sleeved on the outside of the limit column (505) is fixedly connected between the connecting block (506) and the connecting plate (501); and a push plate (509) is fixedly provided on the side wall of the protection cover (504).

4. A road pavement compressive strength testing device according to claim 3, characterized in that: The top end of the protective cover (504) is located outside the telescopic end of the hydraulic cylinder (5) and is provided with a movable groove (508), and the bottom of the protective cover (504) is an open structure.

5. A road pavement compressive strength testing device according to claim 1, characterized in that: The support mechanism comprises a first support plate (6) fixedly arranged at the center of the top end of the base (1); a second support plate (601) hingedly connected to the first support plate (6) is arranged on the top of the first support plate (6); a groove (602) is provided inside one end of the first support plate (6); an air bag (603) is fixedly arranged on the inner wall of the bottom end of the groove (602); a fixing column (604) is fixedly arranged on the bottom end of the top plate (3) and located on one side of the hydraulic cylinder (5); a second spring (605) is fixedly connected to the inner wall of the top end of the fixing column (604); a piston (606) slidably matched with the fixing column (604) is fixedly connected to the bottom of the second spring (605); a connecting rod (607) is fixedly connected to the bottom of the piston (606); an inner rod (608) slidably matched with the connecting rod (607) is arranged inside the connecting rod (607); the bottom end of the inner rod (608) is fixedly connected to the top of the push plate (509).

6. A road pavement compressive strength testing device according to claim 5, characterized in that: A waste residue trough (101) is provided inside the base (1) on one side of the first support plate (6) and the second support plate (601).

7. A road pavement compressive strength testing device according to claim 5, characterized in that: The bottom of the fixing column (604) is an open structure, and a hose (609) is fixedly connected between the upper end of the fixing column (604) and the airbag (603).

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