A device for detecting the compressive strength of a bubble mixed light soil

Abstract

The utility model provides a kind of bubble mixed light soil compressive strength detection device, it solves the problem of standard test error is larger etc., it includes detection platform, vertically arranged detection frame body is installed on detection platform, multiple groups of pressurizing components are installed on detection frame body, load limiting component is installed on detection platform, pressurizing component and detection frame body between respectively being provided with sensing component.The utility model has the advantages of small detection error, easy operation etc.

Description

Technical Field

[0001] This utility model belongs to the field of lightweight soil testing technology, specifically relating to a device for testing the compressive strength of bubble-mixed lightweight soil. Background Technology

[0002] With the large-scale application of lightweight soil, its engineering quality control has become crucial. The core purpose of testing is to ensure that the lightweight soil poured on-site meets the performance indicators required by the design. Among these, compressive strength is the most core and critical mechanical performance indicator for measuring its load-bearing capacity as a structural support material. Currently, the testing of the compressive strength of lightweight soil mainly follows the principle of combining process control and finished product inspection. However, there is a significant error between the compressive strength measured through standard cured specimens and the actual compressive strength of the lightweight soil on-site.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses an in-situ testing device and method for the compressive strength of foamed lightweight soil casting layers [201910730375.6]. The device has a column fixed to a base plate, with a compressive strength tester installed on the top of the column. A lower fixed arm and an upper fixed arm are installed on the column, and a probe is installed in a sleeve hole at the same end of the lower and upper fixed arms. A conical probe is located at the bottom of the probe, a counterweight is fixed to the lower middle part, a drop hammer and a locking mechanism are located in the middle, and the upper part passes through the compressive strength tester. The upper middle part of the probe has a scale. The testing method involves using the device to measure the penetration depth of the probe into the foamed lightweight soil, which is then converted into a compressive strength value by the compressive strength tester.

[0004] The above solution has solved the problem of testing lightweight soil to some extent, but it still has many shortcomings, such as large standard test errors. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed device for testing the compressive strength of bubble-mixed lightweight soil with small detection errors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for testing the compressive strength of bubble-mixed lightweight soil, comprising a testing platform, a vertically arranged testing frame installed on the testing platform, multiple sets of pressurizing components installed on the testing frame, a load-bearing limiting component installed on the testing platform, and sensing components respectively arranged between the pressurizing components and the testing frame.

[0007] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the testing platform includes a horizontally arranged platform, a lifting plate is installed on the platform, and a lifting adjustment component is installed between the lifting plate and the platform.

[0008] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the lifting adjustment component includes an adjustment motor. The output end of the adjustment motor is connected to an active gear ring via a speed-changing gear set. The active gear ring meshes with several driven gears arranged in a centrally symmetrical manner. The driven gears have a threaded hole at their center and are threadedly connected to a lifting screw fixedly installed at the lower end of the lifting plate.

[0009] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the load-bearing limiting component includes limiting grooves arranged symmetrically at the top of the lifting plate, the limiting grooves being radially arranged and each having a limiting block slidably installed thereon, and the limiting block having a limiting knob threadedly connected to the bottom of the limiting groove.

[0010] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the testing frame includes a vertically arranged column, a testing top plate installed at the upper end of the column, and several testing holes opened on the testing top plate. A pressurizing component is installed in the testing holes.

[0011] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the pressurizing component includes a threaded sleeve fixed in the test hole, a pressurizing rod that can be raised and lowered is installed on the threaded sleeve, a contact pressure block is movably installed at the lower end of the pressurizing rod, and the upper end of the pressurizing rod has an opening and a spline.

[0012] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, the sensing component includes a pressure sensor installed between the contact block and the pressure rod.

[0013] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, indicator lights corresponding to the test holes are installed on the top plate of the test.

[0014] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, a sub-base is slidably mounted on the column, and a testing hole for installing a pressurizing component is opened in the sub-base.

[0015] In the aforementioned device for testing the compressive strength of bubble-mixed lightweight soil, a laser emitter is installed on the testing platform.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: multiple detection holes are designed on the top plate of the detection device, which can simultaneously install multiple pressurization components to achieve parallel testing and reduce detection errors; the lifting and adjusting components are electrically controlled, which reduces the intensity of manual operation and improves the accuracy and repeatability of height adjustment; the radial limiting grooves and sliding limiting blocks are used in combination with the limiting knob for fixation, which can quickly adapt to samples of different sizes and shapes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a structural schematic diagram from another perspective of the present invention; In the figure, the components are: testing platform 1, table 11, lifting plate 12, lifting adjustment assembly 13, adjustment motor 14, driving gear ring 15, driven gear 16, lifting screw 17, testing frame 2, column 21, testing top plate 22, testing hole 23, auxiliary seat 24, pressurizing assembly 3, threaded sleeve 31, pressurizing rod 32, contact pressure block 33, bearing limit assembly 4, limit groove 41, limit block 42, and limit knob 43. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1-4 As shown, a device for testing the compressive strength of bubble-mixed lightweight soil includes a testing platform 1, a vertically mounted testing frame 2 on the testing platform 1, a sample to be tested placed between the testing platform 1 and the testing frame 2, multiple sets of pressurizing components 3 installed on the testing frame 2 for distributed testing, a load-bearing limiting component 4 installed on the testing platform 1 to limit the sample, and sensing components respectively set between the pressurizing components and the testing frame 2 to reduce testing errors.

[0020] Specifically, the testing platform 1 includes a horizontally arranged platform 11, a lifting plate 12 installed on the platform 11, and a lifting adjustment assembly 13 installed between the lifting plate 12 and the platform 11. The platform 11 serves as the load-bearing foundation of the entire device, and its levelness directly affects the testing accuracy; the lifting plate 12 is used to directly or indirectly support the lightweight soil specimen being tested, and its lifting function facilitates adaptation to specimens of different heights and adjustment of the initial pressure position.

[0021] Specifically, the lifting adjustment assembly 13 includes an adjustment motor 14. The output end of the adjustment motor 14 is connected to a drive gear ring 15 via a gear set. The drive gear ring 15 meshes with several centrally symmetrically arranged driven gears 16. Each driven gear 16 has a threaded hole in its center and is threadedly connected to a lifting screw 17 fixedly installed at the lower end of the lifting plate 12. The lifting adjustment assembly 13 synchronously drives multiple centrally symmetrically distributed lifting screws 17 through a single drive source. By utilizing the meshing relationship between the drive gear ring 15 and the driven gears 16, the lifting plate 12 is ensured to remain horizontally stable during lifting, avoiding uneven loading or jamming, and improving the smoothness and accuracy of the adjustment.

[0022] Furthermore, the bearing limiting assembly 4 includes limiting grooves 41 arranged symmetrically at the top of the lifting plate 12. The limiting grooves 41 are radially arranged, and limiting blocks 42 are slidably mounted on each groove. The limiting blocks 42 can slide radially within the radially arranged limiting grooves 41, thus accommodating specimens with different cross-sectional dimensions. A limiting knob 43 is threaded onto the limiting block 42, pushing against the bottom of the limiting groove 41. Tightening the limiting knob 43 generates friction between its bottom and the limiting groove 41, thereby fixing the position of the limiting block 42 and effectively limiting the lateral movement of the specimen, preventing horizontal movement or tipping during testing.

[0023] In addition, the testing frame 2 includes a vertically arranged column 21, with a testing top plate 22 installed at the top of the column 21. The column 21 provides support for the entire pressurization system, and the testing top plate 22 serves as the mounting base for the pressurization assembly 3. The testing top plate 22 has several testing holes 23, and the pressurization assembly 3 is installed within these holes. The arrangement of multiple testing holes 23 allows for simultaneous or selective pressurization testing of multiple specimens or different points on a single specimen, improving testing efficiency.

[0024] Meanwhile, the pressurizing assembly 3 includes a threaded sleeve 31 fixed within the detection hole 23. The threaded sleeve 31 is threadedly fitted with a pressurizing rod 32 that can move up and down. A contact pressure block 33 is movably mounted on the lower end of the pressurizing rod 32. The upper end of the pressurizing rod 32 has an opening and a spline. Precise vertical feeding can be achieved by rotating the pressurizing rod 32, thereby applying pressure to the specimen. The spline structure at the upper end of the pressurizing rod 32 facilitates connection with external drive tools, enabling manual or automatic control. The movable mounting of the contact pressure block 33 and the pressurizing rod 32 can compensate for any non-parallelism that may exist on the specimen surface, ensuring uniform pressure application.

[0025] As can be seen, the sensing components are used to monitor and measure the pressure value applied to the specimen in real time during the pressurization process, specifically including a pressure sensor installed between the contact block 33 and the pressurization rod 32.

[0026] It is obvious that the top plate 22 is equipped with indicator lights that correspond one-to-one with the test holes 23 to indicate the working status of the corresponding pressurization components 3, which facilitates monitoring and differentiation during multi-point testing.

[0027] Preferably, a sub-base 24 is slidably mounted on the column 21, and the sub-base 24 has a detection hole 23 for mounting the pressurization component. This sub-base 24 increases the adjustability of the pressurization point, allowing its position to be flexibly adjusted in the height direction of the column 21 according to the height of the specimen or testing requirements, thus expanding the application range of the device.

[0028] Obviously, the testing platform 1 is equipped with a laser emitter. When the test specimen is placed, the emitted light spot can indicate the expected pressure center point, ensuring that the test specimen is accurately placed directly below the pressure assembly 3.

[0029] In summary, the principle of this embodiment is as follows: A lifting adjustment assembly 13, driven by an adjusting motor 14 and driven by a gear set to drive an active gear ring 15, synchronously meshes with multiple centrally symmetrically arranged driven gears 16, thereby forcing the lifting screw 17 fixed to the lifting plate 12 to produce a precise vertical displacement. This achieves the horizontal leveling and precise alignment of the specimen by a bearing limiting assembly 4 consisting of a limiting block 42 that is slidable within the radial limiting groove 41 on the top of the lifting plate 12 and fixed by a limiting knob 43. Simultaneously, a pressure assembly 3 installed in the detection hole 23 on the detection top plate 22 and the slidable sub-seat 24 applies pressure to the specimen by rotating the pressure rod 32 in its threaded sleeve 31 to drive the contact pressure block 33 movably installed at the lower end. The pressure data is collected in real time by a sensing component integrated between the contact pressure block 33 and the pressure rod 32.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] Although this document frequently uses terms such as testing platform 1, table 11, lifting plate 12, lifting adjustment assembly 13, adjustment motor 14, driving gear ring 15, driven gear 16, lifting screw 17, testing frame 2, column 21, testing top plate 22, testing hole 23, auxiliary seat 24, pressurizing assembly 3, threaded sleeve 31, pressurizing rod 32, contact pressure block 33, load-bearing limiting assembly 4, limiting groove 41, limiting block 42, and limiting knob 43, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A device for testing the compressive strength of bubble-mixed lightweight soil, comprising a testing platform (1), wherein a vertically arranged testing frame (2) is mounted on the testing platform (1), characterized in that, Multiple sets of pressurizing components (3) are installed on the testing frame (2), and a load-bearing limiting component (4) is installed on the testing platform (1). Sensing components are respectively provided between the pressurizing components and the testing frame (2).

2. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 1, characterized in that, The testing platform (1) includes a horizontally arranged platform (11), a lifting plate (12) is installed on the platform (11), and a lifting adjustment assembly (13) is installed between the lifting plate (12) and the platform (11).

3. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 2, characterized in that, The lifting adjustment assembly (13) includes an adjustment motor (14). The output end of the adjustment motor (14) is connected to an active gear ring (15) via a speed-changing gear set. The active gear ring (15) meshes with several driven gears (16) arranged in a centrally symmetrical manner. The driven gears (16) have a threaded hole in the center and are threadedly driven by a lifting screw (17) fixedly installed at the lower end of the lifting plate (12).

4. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 3, characterized in that, The bearing limiting component (4) includes a limiting groove (41) arranged symmetrically on the top of the lifting plate (12). The limiting groove (41) is radial and each limiting block (42) is slidably installed. The limiting block (42) is threaded with a limiting knob (43) that pushes against the bottom of the limiting groove (41).

5. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 1, characterized in that, The testing frame (2) includes a vertically arranged column (21), a testing top plate (22) is installed on the upper end of the column (21), and a number of testing holes (23) are opened on the testing top plate (22). The pressurizing component (3) is installed in the testing holes (23).

6. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 5, characterized in that, The pressurizing component (3) includes a threaded sleeve (31) fixed in the detection hole (23). The threaded sleeve (31) is threadedly driven to install a pressurizing rod (32) that can be raised and lowered. A contact pressure block (33) is movably installed at the lower end of the pressurizing rod (32). The upper end of the pressurizing rod (32) has an opening and a spline.

7. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 6, characterized in that, The sensing assembly includes a pressure sensor installed between the contact block (33) and the pressure rod (32).

8. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 6, characterized in that, The detection top plate (22) is equipped with indicator lights that correspond one-to-one with the detection holes (23).

9. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 5, characterized in that, A sub-base (24) is slidably mounted on the column (21), and a detection hole (23) for installing the pressurization component is opened in the sub-base (24).

10. The device for testing the compressive strength of bubble-mixed lightweight soil according to claim 9, characterized in that, The detection platform (1) is equipped with a laser emitter.

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