Civil engineering geotechnical strength detection device

Abstract

This utility model discloses a soil and rock strength testing device for civil engineering. A connecting column (2) is fixed on each side of the top of the base (1). A movable pressure plate (3) is slidably connected in the middle of the connecting column (2). A top seat (4) is fixed on the top of the connecting column (2). A jack (7) is fixed in the middle of the top surface of the base (1). The top of the jack (7) is fixedly connected to the movable pressure plate (3). An S-shaped sensor (5) is fixed in the middle of the bottom of the top seat (4). A cone tip (51) is fixed to the detection end of the S-shaped sensor (5). A protective collection device (6) is inserted in the middle of the movable pressure plate (3) to surround the cone tip (51). The protective collection device effectively surrounds the rock sample in all directions, preventing flying debris from the rock sample during load application and improving the safety of the experimental personnel. Furthermore, the device is transparent, allowing the experimental personnel to clearly observe the changes in the rock sample during the splitting and failure process, ensuring the accuracy of the experimental data and the intuitiveness of the experimental process.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering and geotechnical engineering technology, and in particular to a geotechnical strength testing device. Background Technology

[0002] In the field of civil engineering, rock and soil strength testing (such as rock compressive, tensile, or splitting tests) is a core step in assessing rock mass stability and engineering design parameters. Traditional rock and soil strength testing usually requires placing rock samples on specialized testing equipment for loading tests to simulate the stress conditions in actual engineering projects, such as the commonly used rock point load strength tester.

[0003] The rock point load strength tester consists of a frame, jack, controller, S-type sensor, cone tip, and movable pressure plate. Its working principle is as follows: The rock is processed into regular blocks (recommended size: diameter 30-50mm, length ≥ 1.5 times the diameter) or irregular rock blocks are used directly (dimensions must be recorded). Ensure the loading point is located in the center of the rock sample to avoid edge effect interference. During loading, the rock sample is placed on the movable plate. Using the jack or manual pressure, the movable plate is moved upwards to contact the cone tip, slowly applying the load until the rock sample fractures. The pressure is detected by the S-type sensor, which is connected to the controller via wires, transmitting data to the controller and recording the maximum load value at failure.

[0004] However, during testing, rock samples often fracture under high loads, producing flying debris. This debris can pose a direct safety threat to personnel, damage equipment, and cause inconvenience and additional costs to the experiment.

[0005] To address these issues, most existing geotechnical strength testing devices employ various forms of protective measures. For example, some devices use fixed protective covers around the testing area to block flying debris, but this method often suffers from complex installation, difficulty in observing the experimental process, and cleaning difficulties. Other devices use movable protective plates, which, while improving the flexibility and safety of the experiment to some extent, still have problems such as insufficient protection and cumbersome installation and disassembly.

[0006] Therefore, it is particularly important to develop a soil and rock strength testing device that can effectively block flying debris and improve experimental safety, while also being easy to install, disassemble, observe, and clean. Summary of the Invention

[0007] The purpose of this invention is to prevent flying debris from rock samples during the application of loads and to ensure the safety of laboratory personnel. It provides a safe, reliable, efficient, and easy-to-assemble and disassemble geotechnical strength testing device for civil engineering.

[0008] To achieve the above-mentioned objectives of this utility model, the following technical solution is adopted for a civil engineering geotechnical strength testing device:

[0009] This utility model discloses a geotechnical strength testing device for civil engineering, comprising a base and a controller. Connecting columns are fixed on both sides of the top of the base. A movable pressure plate is slidably connected to the middle of each connecting column. A top seat is fixed on the top of each connecting column. A jack is fixed to the middle of the top surface of the base, with its top fixedly connected to the movable pressure plate. An S-shaped sensor is fixed to the middle of the bottom of the top seat, and the S-shaped sensor is connected to the controller via a wire. A cone tip is fixed to the detection end of the S-shaped sensor, corresponding to the movable pressure plate. The device is characterized by having a protective collection device inserted into the middle of the movable pressure plate. The cone tip is surrounded; the protective collection device includes a second partition and a first partition arranged symmetrically and parallelly. A U-shaped seat is fixedly connected to each side of the bottom of the first partition. The U-shaped seat is inserted into the movable pressure plate for limitation. A connecting plate is fixed between the bottom of the U-shaped seats. Side plates are fixed to both sides of the top of the U-shaped seats. The side plates are fixedly connected to the first partition. Locking bolts are threaded through the bottom of each U-shaped seat, and slots are opened at the lower rear end of each U-shaped seat. A socket and a T-shaped plug are fixedly connected to the upper and lower sides of the second partition, respectively. The T-shaped plug is engaged with the slot, and the socket is engaged with the side plate.

[0010] Preferably, a connecting plate is also fixed to the bottom of the second partition.

[0011] Preferably, the upper parts of the opposite ends of the side plates are symmetrically fixed with side inclined plates, and the upper parts of the opposite ends of the first partition and the second partition are symmetrically fixed with main inclined plates.

[0012] The first partition, the second partition, and the side panels are all made of transparent plastic or transparent acrylic sheets.

[0013] Preferably, the main inclined plate and the side inclined plate are arranged alternately in an alternating manner.

[0014] Preferably, the lower part of the second partition has an opening, and a push plate is embedded in the opening to cooperate with the movable pressure plate. A push rod is fixed to the rear end face of the push plate.

[0015] The above technical solution adopted in this utility model for testing the strength of soil and rock in civil engineering has the following positive effects:

[0016] (1) This utility model effectively surrounds the rock sample from all directions through a carefully designed protective collection device, preventing the flying debris generated by the rock sample cracking during the application of load from injuring people. This strict protection greatly enhances the safety of experimental personnel.

[0017] (2) This utility model adopts a transparent design concept. The first partition, the second partition, and the side plate are all made of transparent plastic or transparent acrylic plates, which makes it easy for experimental personnel to clearly observe the changes of rock samples during the splitting and failure process, ensuring the accuracy of experimental data and the intuitiveness of the experimental process.

[0018] (3) The present invention can effectively intercept falling fragments by setting a U-shaped receiving plate at the bottom. Furthermore, the design of the push plate when the movable plate returns to its original position can easily push the fragments on the movable plate to the receiving plate of the first partition for collection, which greatly simplifies the cleaning work after the experiment and improves the work efficiency.

[0019] (2) This utility model adopts a modular design. For example, the second partition can be quickly snapped into the first partition and the side plate through T-shaped plugs and sockets. The simple operation of the locking bolts can fix it to the movable pressure plate, making the assembly and disassembly of the whole device quick and easy, saving the time of experimental preparation and completion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a civil engineering geotechnical strength testing device according to the present invention;

[0021] Figure 2 A schematic diagram of the protective collection device designed for this utility model;

[0022] Figure 3 Explosion diagram of the protective collection device designed for this utility model;

[0023] Figure 4 This is a schematic diagram of the interior of the first partition used in this utility model.

[0024] Numbering in the diagram: 1-Base; 2-Connecting column; 3-Modible pressure plate; 4-Top seat; 5-S-type sensor; 51-Cone tip; 6-Protective collection device; 7-Jack; 8-Controller; 61-First partition; 611-Main inclined plate; 612-Connecting plate; 62-Second partition; 621-T-shaped insert; 622-Socket; 63-Side plate; 64-Side inclined plate; 65-U-shaped seat; 651-Slot; 66-Locking bolt; 67-Push rod; 671-Push plate. Detailed Implementation

[0025] To further describe this utility model, the following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of a civil engineering geotechnical strength testing device.

[0026] Depend on Figure 1 The diagram shown is of a civil engineering geotechnical strength testing device, and is combined with... Figure 2 , Figure 3 , Figure 4As can be seen, the present invention provides a civil engineering geotechnical strength testing device, which includes a base 1 and a controller 8. A connecting column 2 is fixed on each of the two sides of the top of the base 1. A movable pressure plate 3 is slidably connected in the middle of the connecting column 2. A top seat 4 is fixed on the top of the connecting column 2. A jack 7 is fixed in the middle of the top surface of the base 1. The top of the jack 7 is fixedly connected to the movable pressure plate 3. An S-shaped sensor 5 is fixed in the middle of the bottom of the top seat 4. The S-shaped sensor is connected to the controller through a wire. A cone tip 51 is fixed at the detection end of the S-shaped sensor 5, and the cone tip 51 corresponds to the movable pressure plate 3. A protective collection device 6 is inserted into the middle of the movable pressure plate 3 to surround the cone tip 51. The protective collection device 6 includes a second partition 62 and a first partition 61 arranged symmetrically and parallelly. A U-shaped seat 65 is fixedly connected to each side of the bottom of the first partition 61. The U-shaped seat 65 is inserted into the movable pressure plate 3 for limitation. A connecting plate 612 is fixed between the bottoms of the U-shaped seats 65. Side plates 63 are fixed to both sides of the top of the U-shaped seats 65. The side plates 63 are fixedly connected to the first partition 61. Side inclined plates 64 are symmetrically fixed to the upper part of the opposite ends of the side plates 63. Main inclined plates 611 are symmetrically fixed to the upper part of the opposite ends of the first partition 61 and the second partition 62. The main inclined plates 611 and the side inclined plates 64 are staggered vertically to effectively prevent rock fragments from splashing upwards. The bottom of the U-shaped seats 65 are all threaded through. There is a locking bolt 66, and the lower rear end of the U-shaped seat 65 is provided with a slot 651; the upper and lower sides of the second partition 62 are respectively fixedly connected to the socket 622 and the T-shaped plug 621. The T-shaped plug 621 is engaged with the slot 651, and the socket 622 is engaged with the side plate 63. The bottom of the second partition 62 is also fixed with a receiving plate 612; the lower part of the second partition 62 has an opening, and a push plate 671 is embedded in the opening to cooperate with the movable pressure plate 3. The rear end face of the push plate 671 is fixed with a push rod 67. When the jack 7 drives the movable plate back to its original position, the push rod 67 is grasped and force is applied to push the push plate 671 away from the second partition 62. The push plate 671 contacts and rubs against the movable plate, pushing the fragments to displace and fall onto the receiving plate 612 of the first partition 61 for collection, which is relatively convenient. The first partition 61, the second partition 62, and the side plate 63 are all made of transparent plastic or transparent acrylic sheets, allowing observation of the load application process until the rock sample fractures. The rock is processed into regular blocks or irregular blocks are used directly. During loading, the rock sample is placed on the movable plate. Using a jack 7 or manual pressure, the movable plate is moved upwards to contact the cone tip 51, slowly applying the load until the rock sample fractures. The pressure is detected by an S-type sensor 5, which is connected to a controller 8 via wires, transmitting data to the controller 8 and recording the maximum load value at the point of failure. To prevent injury from rock fragments during fracture, a protective collection device 6 is installed after the rock sample is placed on the movable plate, preventing injury from flying debris generated during load application and greatly improving the safety of experimental personnel.

[0027] Specifically, grasp the first partition 61, insert the two U-shaped seats 65 into the movable plate, with the rock sample positioned between the two U-shaped seats 65, and then tighten the locking bolts 66 to press against the movable pressure plate 3. Next, snap the second partition 62 onto the first partition 61. The second partition 62 is snapped into the slot 651 by inserting two T-shaped inserts 621 into the slots 651. Then, snap the two sockets 622 onto the two side plates 63, thus fixing them to the first partition 61. At this point, the rock sample is secured to the first partition 61 from the front, back, left, and right. The first partition 61, the second partition 62 and the two side plates 63 are enclosed, and the upper part of the first partition 61, the second partition 62 and the two side plates 63 are also provided with two main inclined plates 611 and two side inclined plates 64 to tilt and surround the upper cone tip 51. When the load is applied to the rock sample and it splits and breaks, the flying debris is blocked, which improves the safety of the experiment. In addition, the bottom of the first partition 61 and the second partition 62 are also provided with U-shaped receiving plates 612 that extend to the bottom of the movable plate, which can collect the intercepted falling fragments.

[0028] Working principle:

[0029] The rock is processed into regular blocks or irregular blocks are used directly. During the loading process, the rock sample is placed on a movable plate. The movable plate is moved upward to contact the cone tip 51 by jack 7 or manual pressure, and the load is slowly applied until the rock sample splits and fails. The pressure is detected by S-type sensor 5. S-type sensor 5 is connected to controller 8 by wires and sends data to controller 8 to record the maximum load value at failure.

[0030] To prevent injury from rock sample fragments, after placing the rock sample on the movable plate, install the protective collection device 6. This involves grasping the first partition 61, inserting two U-shaped supports 65 into the movable plate, positioning the rock sample between the two U-shaped supports 65, and then tightening the locking bolts 66 to press against the movable pressure plate 3. Next, attach the second partition 62 to the first partition 61. The second partition 62 is secured by two T-shaped inserts 621 inserted into slots 651. Then, attach the two sockets 622 to the two side plates 63, thus fixing the rock sample to the first partition 61. At this point, the rock sample is surrounded by the first partition 61, the second partition 62, and the two side plates 63 on all sides. Furthermore, the upper parts of the first partition 61, the second partition 62, and the two side plates 63 are also equipped with… Two main inclined plates 611 and two side inclined plates 64 tilt and surround the upper cone tip 51. When the rock sample is subjected to load and splits, it can be clearly seen through the first partition 61 and the second partition 62. Moreover, the flying debris is blocked, improving the safety of the experiment. In addition, the bottom of the first partition 61 and the second partition 62 is provided with a U-shaped receiving plate 612 extending to the bottom of the movable plate, which can intercept and collect the falling debris for easy cleaning. When the debris splashed on the movable plate is controlled by the jack 7 to drive the movable plate back to its original position, the push rod 67 is grasped and force is applied to push the push plate 671 to disengage from the second partition 62. The push plate 671 contacts and rubs against the movable plate, pushing the debris to displace and fall onto the receiving plate 612 of the first partition 61 for collection, which is relatively convenient.

[0031] During disassembly, simply grasp the second partition 62 and apply force to separate its T-shaped insert 621 and socket 622 from the first partition 61 and side plate 63. Then loosen the locking bolt 66, grasp the first partition 61, and pull out the movable plate. The installation and disassembly are convenient.

Claims

1. A soil and rock strength testing device for civil engineering, comprising a base (1) and a controller (8), wherein connecting columns (2) are fixed on both sides of the top of the base (1), a movable pressure plate (3) is slidably connected in the middle of the connecting columns (2), a top seat (4) is fixed on the top of the connecting columns (2), a jack (7) is fixed in the middle of the top surface of the base (1), the top of the jack (7) is fixedly connected to the movable pressure plate (3), an S-type sensor (5) is fixed in the middle of the bottom of the top seat (4), the S-type sensor is connected to the controller through a wire; a cone tip (51) is fixed at the detection end of the S-type sensor (5), the cone tip (51) corresponds to the movable pressure plate (3), characterized in that: A protective collecting device (6) is inserted into the middle of the movable pressure plate (3) to surround the cone tip (51); the protective collecting device (6) includes a second partition (62) and a first partition (61) arranged symmetrically and parallelly. A U-shaped seat (65) is fixedly connected to each side of the bottom of the first partition (61). The U-shaped seat (65) is inserted into the movable pressure plate (3) for limitation. A connecting plate (612) is fixed between the bottoms of the U-shaped seats (65). A connecting plate (612) is fixed on both sides of the top of the U-shaped seat (65). Side plate (63) is fixedly connected to the first partition plate (61); the bottom of the U-shaped seat (65) is threaded with locking bolts (66), and the lower rear end of the U-shaped seat (65) is provided with slots (651); the upper and lower sides of the second partition plate (62) are fixedly connected with sockets (622) and T-shaped plugs (621), respectively, the T-shaped plugs (621) are engaged with slots (651), and the sockets (622) are engaged with side plate (63).

2. The civil engineering geotechnical strength testing device according to claim 1, characterized in that: The bottom of the second partition (62) is also fixed with a connecting plate (612).

3. The civil engineering geotechnical strength testing device according to claim 1, characterized in that: Side inclined plates (64) are symmetrically fixed to the upper part of opposite ends of the side plate (63), and main inclined plates (611) are symmetrically fixed to the upper part of opposite ends of the first partition plate (61) and the second partition plate (62).

4. The civil engineering geotechnical strength testing device according to claim 3, characterized in that: The main inclined plate (611) and the side inclined plate (64) are arranged alternately.

5. The civil engineering geotechnical strength testing device according to claim 1, characterized in that, The second partition (62) has an opening at the bottom, and a push plate (671) is embedded in the opening to cooperate with the movable pressure plate (3). A push rod (67) is fixed on the rear end face of the push plate (671).

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