Concrete coarse aggregate grading type soft particle load test device

Abstract

The utility model relates to the technical field of concrete detection equipment, and particularly discloses a concrete coarse aggregate grading type soft particle load test device which comprises a supporting base which is of a rectangular plate body structure, a movable sliding rail is symmetrically arranged at the upper end of the supporting base, a positioning plate is installed at the top end of the movable sliding rail, and the positioning plate is arranged on the supporting base. A lifting pressure applying column is mounted in the positioning plate and is a main load pressure applying device for a soft particle load test. When the concrete coarse aggregate grading type soft particle load test device is used, a vertical rectangular frame structure is formed by the supporting base, the movable sliding rail and the positioning plate, a stable supporting foundation is provided for the whole test device, and when the device is used, the load weight borne by the bottom box and the grading box which are arranged above is measured by the weight measuring device; reliable data support is provided for analyzing the crushing conditions of the soft particles in the coarse aggregates with different particle sizes under the corresponding pressure, and detailed data is provided for concrete quality evaluation.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete testing equipment, specifically a concrete coarse aggregate grading type weak particle load test device. Background Technology

[0002] Concrete is one of the most widely used building materials in construction, water conservancy, highway, waterway, and railway projects. Coarse aggregate, as an important component of concrete, directly affects the performance of concrete and thus the quality of the entire project. Weak particles in coarse aggregate are prone to breakage during concrete stress, reducing the overall strength and durability of concrete and making concrete structures more susceptible to cracks and deformation, thus affecting the safety and service life of the project. Industry standards have clear requirements for the testing of weak particle content in coarse aggregate, which must be graded by particle size and tested under specific loads.

[0003] The existing testing equipment has a large electric loading device and requires a large area for installation, which increases the difficulty of transporting and using the equipment. In addition, the existing equipment uses a box without a fixed positioning structure when placing aggregate samples, which is easily damaged when the pressure plate is pressed down. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete coarse aggregate grading type weak particle load test device to solve the problems mentioned in the background art. The existing test devices require a large area for installation, which increases the difficulty of transporting and using the device. In addition, the existing devices use boxes without a fixed positioning structure when placing aggregate samples, which are easily damaged when the pressure plate is pressed down.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a concrete coarse aggregate grading type weak particle load test device includes a support base, which is configured as a rectangular plate structure, and a movable slide rail is symmetrically arranged on the upper end of the support base. A positioning plate is installed at the top of the movable slide rail, and a lifting pressure column is installed inside the positioning plate. The lifting pressure column is the main load pressure device for the weak particle load test.

[0006] The support base, the sliding rail and the positioning plate form a vertical rectangular frame structure. A weighing device is installed on the upper end of the support base. A rectangular plate is installed on the upper end of the weighing device. A groove is provided on the rectangular plate at the top of the weighing device. Four guide columns are symmetrically arranged through the upper end of the positioning plate. A horizontal pressure plate is provided at the output end of the lifting pressure column. The horizontal pressure plate is symmetrically penetrated by the guide columns on both sides.

[0007] A bottom box is installed in the groove of the rectangular plate of the weighing device, and a grading box is installed on the upper end of the bottom box. The grading box, which is snapped into the upper end of the bottom box, is set in a conical direction. A sieve plate is installed on the inner wall of the bottom box and the grading box respectively, and a contact switch is installed on the inner wall of the bottom box and the grading box.

[0008] By adopting the above technical solution, the device can effectively classify weak particles and conduct tests by applying pressure to the weak particles.

[0009] Preferably, the upper end of the support base is provided with a groove structure, and the height of the upper end of the support base is lower than the height of the upper end of the rectangular plate of the weighing device.

[0010] The above technical solution makes it easy for the weighing device to provide a corresponding mounting structure for the box above it.

[0011] Preferably, there are two movable slide rails, and a movable slider is slidably connected inside the movable slide rail, and a limit frame is installed on one side of the movable slider.

[0012] The above technical solution uses a movable slide rail to provide direction and power for the lifting and lowering of the movable slider.

[0013] Preferably, the bottom box is configured as a U-shaped rectangular tray structure, and the inner wall of the bottom box is symmetrically provided with a track that slides and connects with the sieve plate.

[0014] Using the above technical solution, the bottom box is installed with a U-shaped structure, which facilitates processing during load collection.

[0015] Preferably, the grading box has a stacked protrusion structure at its upper end, and the inner wall of the grading box is symmetrically provided with a track that slides and connects with the sieve plate.

[0016] The above technical solution allows for easy installation of the sieve plate via a track located on the inner wall of the grading box.

[0017] Preferably, the sieve plate has uniformly formed holes on its surface that are penetrated by soft granular aggregate, and the sieve plate has raised structures on both sides.

[0018] By adopting the above technical solution, it is convenient to classify soft particles after installing a sieve plate on the surface of the sieve plate.

[0019] Preferably, the contact switch is installed at the bottom end of the track inside the base box and the grading box.

[0020] The above technical solution allows for easy installation of contact switches via tracks on the inner walls of the base box and the grader box.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the concrete coarse aggregate graded type weak particle load test device:

[0022] 1. When the device is in use, the vertical rectangular frame structure formed by the support base, the sliding rail and the positioning plate provides a stable support foundation for the entire test device. During use, the load weight of the bottom box and the grading box placed on top is measured by the weighing device, which provides reliable data support for analyzing the crushing of weak particles in coarse aggregates of different sizes under corresponding pressure.

[0023] The contact switch installed on the inner wall of the bottom box and the grading box is located at the bottom of the inner wall track. When the weak particles in the coarse aggregate are crushed, the contact switch may be triggered, thereby recording relevant data. By combining the data from the weighing device, the crushing situation of the weak particles in coarse aggregate of different sizes under the corresponding pressure can be comprehensively analyzed, providing a more detailed basis for concrete quality assessment.

[0024] 2. The sliding rails are equipped with two movable slide rails, and the internally connected movable sliders, together with the limiting frame, can be adjusted in height according to the test requirements to limit the position of the grading box. This helps maintain the position of the grading box for weak particles during the load test, avoiding overall displacement. The raised structure on the upper end of the grading box facilitates stacking and installation. The coarse aggregate is graded through the holes of the internal sieve plate, allowing it to be naturally graded according to particle size. Large particles remain in the upper layer, while small particles pass through the holes into the lower layer, achieving efficient preliminary screening and providing more accurate samples for subsequent load tests. The precise pressure applied to the sieve plate by the horizontal pressure plate prevents damage to the bottom box and the grading box. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall internal three-dimensional structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the overall internal side section of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram showing the installation position of the horizontal pressure plate and the limiting frame of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the installation of the horizontal pressure plate, guide column and limiting frame of this utility model;

[0030] Figure 6 This is a three-dimensional structural diagram of the installation of the base box and the grading box of this utility model.

[0031] In the diagram: 1. Support base; 2. Sliding rail; 3. Positioning plate; 4. Lifting pressure column; 5. Horizontal pressure plate; 6. Guide column; 7. Limiting frame; 8. Sliding slider; 9. Weighing device; 10. Base box; 11. Grading box; 12. Sieve plate; 13. Contact switch. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-6 This utility model provides a technical solution: a concrete coarse aggregate grading type weak particle load test device includes a support base 1, a movable slide rail 2, a positioning plate 3, a lifting pressure column 4, a horizontal pressure plate 5, a guide column 6, a limit frame 7, a movable slider 8, a weighing device 9, a base box 10, a grading box 11, a sieve plate 12, and a contact switch 13.

[0034] Among them, the support base 1 is set as a rectangular plate structure, and a movable slide rail 2 is symmetrically arranged on the upper end of the support base 1. A positioning plate 3 is installed at the top of the movable slide rail 2, and a lifting pressure column 4 is installed inside the positioning plate 3. The lifting pressure column 4 is the main load pressure device for the soft particle load test.

[0035] The support base 1, the sliding rail 2, and the positioning plate 3 form a vertical rectangular frame structure. A weighing device 9 is installed on the upper end of the support base 1. A rectangular plate is installed on the upper end of the weighing device 9, and a groove is provided on the rectangular plate at the top of the weighing device 9. Four guide columns 6 are symmetrically arranged through the upper end of the positioning plate 3. A horizontal pressure plate 5 is provided at the output end of the lifting pressure column 4, and the horizontal pressure plate 5 is symmetrically penetrated by the guide columns 6 on both sides. A groove structure is provided on the upper end of the support base 1, and the height of the upper end of the support base 1 is lower than the height of the upper end of the rectangular plate of the weighing device 9. Two sliding rails 2 are provided, and a sliding slider 8 is slidably connected inside the sliding rail 2. A limit frame 7 is installed on one side of the sliding slider 8.

[0036] Referring to the attached diagrams in the instruction manual Figure 1-6 As shown, it is vertically installed via support base 1, sliding rail 2, and positioning plate 3, as... Figure 4 As shown, the base box 10 and the grading box 11 installed on the upper end of the weighing device 9 are as follows: Figure 1-3As shown, the slider 8 slides up and down the sliding rail 2 to facilitate the limiting installation of the bottom box 10 and the side wall of the grading box 11. The guide column 6 provides guidance and assistance for the lifting and lowering of the limiting frame 7, which helps the limiting frame 7 and the horizontal pressure plate 5 to move up and down stably. At the same time, it keeps the horizontal pressure plate 5 stably pressed into the coarse aggregate in the bottom box 10. The guide column 6 can ensure that the horizontal pressure plate 5 descends vertically and applies pressure evenly to the coarse aggregate of different particle sizes in the grading box 11. During the process of the lifting and pressing column 4 pushing the horizontal pressure plate 5 down, the weighing device 9 records the corresponding data simultaneously. The groove at the upper end of the weighing device 9 provides installation for the bottom box 10.

[0037] A base box 10 is installed in the groove of the rectangular plate of the weighing device 9, and a grading box 11 is installed on the upper end of the base box 10. The grading box 11, which is snapped into the upper end of the base box 10, is set in a conical direction. A sieve plate 12 is installed on the inner wall of the base box 10 and the grading box 11 respectively. A contact switch 13 is installed on the inner wall of the base box 10 and the grading box 11. The base box 10 is set as a U-shaped rectangular tray structure, and a track that slides and is symmetrically arranged on the inner wall of the base box 10. A stacked protrusion structure is set on the upper end of the grading box 11, and a track that slides and is symmetrically arranged on the inner wall of the grading box 11. Holes that are penetrated by soft granular aggregate are evenly opened on the surface of the sieve plate 12, and protrusion structures are set on both sides of the sieve plate 12. The contact switch 13 is installed at the bottom end of the track inside the base box 10 and the grading box 11.

[0038] Referring to the attached diagrams in the instruction manual Figure 1-6 As shown, before the test, the bottom box 10 and the grading box 11 are stacked and installed, as follows. Figure 6 As shown, the sieve plate 12 inside the bottom box 10 and the grading box 11 is replaced according to the grading requirements. The coarse aggregate is graded through the holes inside the sieve plate 12. The holes in the sieve plate 12 inside the stacked grading box 11 become smaller from top to bottom, thereby achieving the grading of coarse aggregate. During the load test, the sieve plate 12 inside the top grading box 11 is removed as needed, and the height and number of grading boxes 11 are adjusted. During the process of the sieve plate 12 inside the grading box 11 being pressed down by the horizontal pressure plate 5, pressure is continuously applied to the coarse aggregate. During this period, the weighing device 9 continuously records the gravity of the bottom box 10 and the grading box 11 placed above. After the high pressure load on the sieve plate 12 and the coarse aggregate, it moves down along the track of the grading box 11. After the coarse aggregate is crushed, the sieve plate 12 falls rapidly and triggers the contact switch 13. A spring structure is set between the sieve plate 12 and the contact switch 13. This spring structure is replaced as needed.

[0039] Since the inner walls of the bottom box 10 and the grading box 11 are provided with a track for sliding connection of the sieve plate 12, after the test, the sieve plate 12 can be easily pulled out to clean the residual coarse aggregate and broken soft particles, thereby effectively reducing the cleaning difficulty and maintenance cost of the device and improving the test efficiency.

[0040] Working principle: When using this concrete coarse aggregate grading type weak particle load testing device, the concrete coarse aggregate to be tested is placed in the grading box 11. The aggregate is graded by the vertically installed grading box 11 and the bottom box 10. The sieve plate 12 set on the inner wall of the bottom box 10 and the grading box 11 can perform preliminary screening and load-bearing of coarse aggregates of different particle sizes. The contact switch 13 is installed at the bottom end of the track inside the bottom box 10 and the grading box 11 to prepare for subsequent testing. During use, the moving slider 8 pulls the limiting frame 7 to adjust the height of the bottom box 10 and the grading box 11. The pressure column 4 pushes the horizontal pressure plate 5 down, causing the horizontal pressure plate 5 to press down on the screen plate 12 on the grading box 11. The screen plate 12 descends along the track on the inner wall of the grading box 11, continuously increasing the load pressure on the coarse aggregate inside. During the pressure application process of the horizontal pressure plate 5, the weighing device 9 monitors the pressure data in real time. As the screen plate 12 descends and crushes the coarse aggregate, the descent of the screen plate 12 triggers the contact switch 13, thereby recording the relevant data. At the same time, in conjunction with the data from the weighing device 9, the crushing situation of weak particles in coarse aggregates of different sizes under corresponding pressure can be analyzed, increasing the overall practicality.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A graded weak particle load test device for concrete coarse aggregate, comprising: The support base (1) is configured as a rectangular plate structure, and a movable slide rail (2) is symmetrically arranged on the upper end of the support base (1). A positioning plate (3) is installed at the top of the movable slide rail (2), and a lifting pressure column (4) is installed inside the positioning plate (3). The lifting pressure column (4) is the main load pressure device for the soft particle load test. The feature is that the support base (1), the sliding rail (2) and the positioning plate (3) form a vertical rectangular frame structure, and a weighing device (9) is installed on the upper end of the support base (1). A rectangular plate is installed on the upper end of the weighing device (9), and a groove is provided on the rectangular plate at the top of the weighing device (9). A guide column (6) is symmetrically arranged through the upper end of the positioning plate (3), and there are 4 guide columns (6). A horizontal pressure plate (5) is provided at the output end of the lifting pressure column (4), and the horizontal pressure plate (5) is symmetrically penetrated by the guide column (6) on both sides. The weighing device (9) has a base box (10) installed in the groove of the rectangular plate, and a grading box (11) is installed on the upper end of the base box (10). The grading box (11) connected to the upper end of the base box (10) is set in a conical direction. A sieve plate (12) is installed on the inner wall of the base box (10) and the grading box (11), and a contact switch (13) is installed on the inner wall of the base box (10) and the grading box (11).

2. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: The upper end of the support base (1) is provided with a groove structure, and the height of the upper end of the support base (1) is lower than the height of the upper end of the rectangular plate of the weighing device (9).

3. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: Two movable slide rails (2) are provided, and a movable slider (8) is slidably connected inside the movable slide rail (2), and a limit frame (7) is installed on one side of the movable slider (8).

4. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: The bottom box (10) is configured as a U-shaped rectangular tray structure, and the inner wall of the bottom box (10) is symmetrically provided with a track that slides and connects with the sieve plate (12).

5. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: The grading box (11) is provided with a stacked protrusion structure at the upper end, and the inner wall of the grading box (11) is symmetrically provided with a track that is slidably connected to the sieve plate (12).

6. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: The sieve plate (12) has uniform holes on its surface that are penetrated by soft granular aggregate, and the sieve plate (12) has raised structures on both sides.

7. The concrete coarse aggregate graded type weak particle load test device according to claim 1, characterized in that: The contact switch (13) is installed at the bottom of the track inside the base box (10) and the grade box (11).

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