Road foundation strength detection device

Abstract

The utility model belongs to the field of road detection, and discloses a road foundation strength detection device which comprises a detection table, a placement table with an L-shaped section is mounted on the detection table, a U-shaped limiting frame is mounted on the placement table in a sliding manner, a handle is mounted on one side, far away from the placement table, of the limiting frame, and a placement cavity is formed between the limiting frame and the placement table; and the protection box is fixed to the detection table, the placement table is located in the protection box, one side of the protection box is not closed, and a compression resistance detection mechanism is installed on the protection box. According to the device, the limiting frame and the placement table are slidably mounted together, so that the placement cavity can be relatively expanded and separated, the device can expand and open the placement cavity after detection is completed, an operator can conveniently clean the placement cavity, and the cleanliness of the device after use is improved.

Description

Technical Field

[0001] This utility model belongs to the field of highway testing technology, specifically relating to a highway foundation strength testing device. Background Technology

[0002] In highway construction, the foundations of some highways (such as the foundations of some bridges and highways in soft geological conditions) are made of concrete. In order to ensure the strength of the foundation after the concrete is poured, several concrete samples are usually poured before construction and then the samples are tested for quality to ensure the strength after construction. Among them, the test of compressive strength is particularly important.

[0003] Chinese patent CN217954135U discloses a compressive strength testing device for road foundations in water conservancy projects. The device includes an installation platform with a worktable fixedly mounted on its top. A placement groove is formed in the center of the top of the worktable. A vertical rod is mounted on the upper surface of the worktable, located on one side of the placement groove, and is fixedly connected to the worktable. An installation groove is formed on the edge of the top of the worktable away from the vertical rod. A closing mechanism is provided within the installation groove. The closing mechanism includes a servo motor, a screw, a threaded block, and a connecting block. The screw is fixedly mounted on the output end of the servo motor. A hydraulic cylinder drives a test plate to press down and perform a pressure test on a concrete sample. This facilitates the determination of whether the concrete used in the water conservancy foundation meets the standards. Simultaneously, the closing mechanism allows for easy opening and closing of the protective cover on the front of the test chamber, preventing concrete sample breakage and splashing during overload testing, thus avoiding danger to operators and effectively improving the device's installability.

[0004] However, in actual use, when the concrete sample is tested using the above-mentioned scheme, it may break apart. Although the flying debris will not injure the operators, the debris and fragments of the concrete sample are restricted by the walls of the placement tank during cleaning. This makes it difficult to clean the debris and fragments from the placement tank after the device is used. Furthermore, the debris may also fly into the installation tank, affecting the normal operation of the sealing mechanism. Utility Model Content

[0005] The present invention aims to provide a highway foundation strength testing device to solve the problem of difficulty in cleaning up debris and debris in the above-mentioned solutions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a highway foundation strength testing device, comprising...

[0007] The testing table has an L-shaped placement platform installed on it. A U-shaped limiting frame is slidably installed on the placement platform. A handle is installed on the side of the limiting frame away from the placement platform. There is a placement cavity between the limiting frame and the placement platform.

[0008] The protective box is fixed on the testing platform, and the platform is located inside the protective box. One side of the protective box is not closed, and a pressure testing mechanism is installed on the protective box.

[0009] The principle and effects of this technical solution:

[0010] 1. The placement chamber is composed of a placement platform and a limiting frame, with the limiting frame slidingly installed on the placement platform. Therefore, the limiting frame can open the placement chamber by sliding. After the placement chamber is opened, it is convenient for the operator to clean the inside, making it easier to remove debris from the placement chamber. At the same time, after the placement chamber is opened, it is convenient to place the concrete sample stably on the placement platform, and then move the concrete sample to the bottom of the compressive strength testing mechanism for compressive strength testing through the limiting frame.

[0011] 2. The protective box can reduce the flying debris caused by the cracking of concrete samples during testing.

[0012] The present invention is further configured such that: a guide rod is provided above the table surface of the placement platform and fixed to the side wall of the placement platform; a guide hole is provided on the side wall of the limiting frame; the guide rod is slidably inserted into the guide hole; and the bottom of the limiting frame is slidably abutting against the table surface of the placement platform.

[0013] The principle and effect of this technical solution: By sliding the guide rod with the guide hole of the limiting frame, the limiting frame is more stable when moving and can move the concrete sample to the designated location. The guide rod can restrict the vertical movement of the limiting frame, so that the limiting frame will not jump when the concrete sample breaks. In addition, the guide rod will not affect the disassembly of the limiting frame from the placement platform, which facilitates the loading and unloading of the limiting frame.

[0014] The present invention is further configured such that: a limiting hole is vertically opened at one end of the guide rod near the limiting frame, and a slot corresponding to the limiting hole is opened on the limiting frame. The slot is connected to the guide hole, and a limiting mechanism is slidably inserted in the slot. The limiting mechanism is adapted to the limiting hole.

[0015] The principle and effect of this technical solution: By setting the limiting hole and slot, the operator can control the position of the limiting mechanism to fix the limiting frame. The fixed limiting frame can stably restrict the position of the concrete sample. When the limiting frame is not fixed, the limiting frame can be removed to clean the debris of the concrete sample.

[0016] The present invention is further configured such that: the limiting mechanism includes a limiting rod, a limiting cylinder, a limiting block, and a limiting spring; the limiting cylinder is fixed on the limiting frame and corresponds to the position of the slot; one end of the limiting rod is fixed with a pull ring; the other end of the limiting rod is slidably inserted into the limiting cylinder and extends to slide into the slot; the limiting rod is adapted to the limiting hole; the limiting block is slidably fitted inside the limiting cylinder and is fixedly mounted on the limiting rod; the limiting spring is mounted on the limiting rod and is located inside the limiting cylinder on the side of the limiting block away from the limiting frame.

[0017] The principle and effect of this technical solution: By pressing the limiting block with the limiting spring, the limiting rod can extend into the guide hole without external force. Therefore, by inserting the limiting rod into the limiting hole, the limiting frame and the guide rod can be fixed together, thus fixing the limiting frame. By pulling the pull ring, the limiting block compresses the spring, which allows the bottom of the limiting rod to retract into the slot, so that the limiting frame can slide relative to the guide rod and slide out of the guide rod, making it easier to clean up the debris of the concrete sample.

[0018] The present invention is further configured such that: the lower end of the limiting rod is provided with an inclined surface on the side near the fixed end of the guide rod.

[0019] The principle and effect of this technical solution: The inclined surface allows the operator to push the limit frame closer to the placement platform with the push handle, i.e., when the guide rod is inserted into the guide hole. The operator does not need to control the limit rod. When the guide rod and the inclined surface of the limit rod abut against each other, the limit rod can make way for the guide rod by pressing against the inclined surface. When the limit hole corresponds to the limit rod, the limit rod automatically inserts into the limit hole, thereby limiting the limit frame and making the fixation of the limit frame more convenient.

[0020] The present invention is further configured such that: the pressure testing mechanism includes a hydraulic cylinder, a pressure sensor and a pressure plate; the hydraulic cylinder is fixed on the protective box; the hydraulic rod of the hydraulic cylinder passes through the top of the protective box; the pressure sensor is fixed to the bottom of the hydraulic rod; and the pressure plate is fixed to the bottom of the pressure sensor.

[0021] The principle and effect of this technical solution: The hydraulic cylinder controls the lifting and lowering of the hydraulic rod, which in turn drives the pressure sensor and the pressure plate to move closer to and away from the concrete sample. This allows the pressure plate to perform the functions of testing the compressive strength of the concrete sample and moving away from it. The pressure sensor detects the pressure when the pressure plate is pressed down, thereby obtaining the compressive strength of the concrete sample.

[0022] The present invention is further configured as follows: it also includes a protective door, and the protective box has a sliding groove on both sides of the side wall near the unclosed side. A slider is fixed at the top and bottom of the sliding groove. Symmetrical moving grooves are opened on the upper and lower sides of the protective door. A moving rod is fixed in the moving groove. The protective door slides in conjunction with the sliding groove, and the slider slides in conjunction with the moving groove. The slider is slidably fitted onto the moving rod.

[0023] The principle and effect of this technical solution: The protective door can prevent concrete samples from breaking and splashing everywhere during testing. By sliding the protective door groove and opening the moving groove on the upper and lower sides of the protective door, the debris of the concrete sample cannot accumulate in the moving groove and the sliding groove, so that the debris of the broken concrete sample will not obstruct the operation of the protective door.

[0024] The present invention is further configured such that the protective door is a transparent acrylic sheet.

[0025] The principle and effect of this technical solution: The transparent acrylic plate allows the operator to easily observe the state of the concrete sample during testing. Attached Figure Description

[0026] Figure 1 This is the front view of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0028] Figure 3 for Figure 1 Side view of the protective enclosure;

[0029] Figure 4 for Figure 1 A top-down enlarged view of the middle limiting frame;

[0030] Figure 5 for Figure 4 Side view. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0032] The reference numerals in the accompanying drawings include: 101, testing platform; 102, protective box; 103, slide groove; 104, slider; 201, placement platform; 202, guide rod; 203, limiting hole; 301, limiting frame; 302, handle; 303, guide hole; 304, slot; 401, placement cavity; 501, limiting rod; 502, limiting cylinder; 503, limiting block; 504, limiting spring; 505, pull ring; 601, hydraulic cylinder; 602, hydraulic rod; 603, pressure sensor; 604, pressure plate; 701, protective door; 702, moving groove; 703, moving rod.

[0033] Example:

[0034] As attached Figure 1-4As shown, this utility model discloses a highway foundation strength testing device, including a testing platform 101, a protective box 102, and a protective door 701.

[0035] A protective box 102 with one side open is fixed on the testing table 101. A pressure testing mechanism is installed on the protective box 102. The pressure testing mechanism includes a hydraulic cylinder 601, a pressure sensor 603, and a pressure plate 604. The hydraulic cylinder 601 is fixed on the protective box 102. The hydraulic rod 602 of the hydraulic cylinder 601 passes through the top of the protective box 102. The pressure sensor 603 is fixed to the bottom of the hydraulic rod 602. The pressure plate 604 is fixed to the bottom of the pressure sensor 603.

[0036] There are two protective doors 701. Symmetrical moving grooves 702 are provided on the upper and lower sides of the two protective doors 701. Moving rods 703 are fixed in the moving grooves 702. Sliding grooves 103 are provided on the two side walls of the protective box 102 near the unclosed side. Sliding blocks 104 are fixed at the top and bottom of the sliding grooves 103. The two protective doors 701 are slidably engaged with the sliding grooves 103 on both sides, and the sliding blocks 104 in the sliding grooves 103 are slidably engaged with the moving grooves 702. The sliding blocks 104 are slidably fitted onto the moving rods 703. The protective doors 701 are made of transparent acrylic sheets.

[0037] The inner side of the protective box 102 is provided with a placement platform 201 fixed on the testing table 101. The side cross-section of the placement platform 201 is L-shaped. A guide rod 202 fixed to the side wall of the placement platform 201 is provided above the platform surface. A limit hole 203 is vertically opened at the end of the guide rod 202 near the limit frame 301.

[0038] A U-shaped limiting frame 301 slides and abuts against the placement platform 201. A handle 302 is installed on the side of the limiting frame 301 away from the placement platform 201. There is a placement cavity 401 between the limiting frame 301 and the placement platform 201. A guide hole 303 is opened on the side wall of the limiting frame 301. A slot 304 corresponding to the limiting hole 203 is opened on the limiting frame 301. The slot 304 communicates with the guide hole 303. A guide rod 202 is slidably inserted into the guide hole 303. The bottom of the limiting frame 301 slides and abuts against the table surface of the placement platform 201. A limiting mechanism is slidably inserted into the slot 304.

[0039] The limiting mechanism includes a limiting rod 501, a limiting cylinder 502, a limiting block 503, and a limiting spring 504. The limiting cylinder 502 is fixed on the limiting frame 301 and corresponds to the position of the slot 304. One end of the limiting rod 501 is fixed with a pull ring 505. The other end of the limiting rod 501 is slidably inserted into the limiting cylinder 502 and extends to slide into the slot 304. The limiting rod 501 is adapted to the limiting hole 203. The limiting block 503 is slidably fitted inside the limiting cylinder 502 and is fixedly mounted on the limiting rod 501. The limiting spring 504 is mounted on the limiting rod 501 and is located inside the limiting cylinder 502 on the side of the limiting block 503 away from the limiting frame 301. The lower end of the limiting rod 501 has a bevel on the side near the fixed end of the guide rod 202.

[0040] The specific implementation process is as follows:

[0041] When using this device, first place the concrete sample in the placement cavity 401, then slide the protective doors 701 on both sides to close the protective box 102. Then, activate the hydraulic cylinder 601 to drive the hydraulic rod 602 downwards, thereby pressing down the pressure plate 604. When the pressure plate 604 comes into contact with the concrete sample, the pressure sensor 603 begins to receive the compressive strength of the concrete sample until the concrete sample breaks. At this point, the hydraulic cylinder 601 stops pressing down. Then, the operator opens the protective door 701 and pulls the pull rings 505 on both sides to move the limiting rod 501 away from the limiting grooves on both sides. After leaving the limiting groove, slightly pull the pull ring 505 away from the placement platform 201, and then release the pull ring 505. By pulling the handle 302, the limiting frame 301 can be separated from the placement platform 201 and the guide rod 202, which makes it easier for the operator to clean and tidy up the broken concrete sample, thereby improving the cleanliness of the testing platform 101. After cleaning, by aligning the guide hole 303 with the guide rod 202, the limiting frame 301 is pushed to abut against the side wall of the platform 201, thus completing the restoration of the testing device and resetting the placement cavity 401, so that the device can perform the next test.

[0042] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A road foundation strength detection device, characterized in that: include A testing table, wherein a placing table with an L-shaped cross section is installed on the testing table, a limiting frame with a U-shaped outer shape is slidably installed on the placing table, a handle is installed on the side of the limiting frame away from the placing table, and a placing cavity is provided between the limiting frame and the placing table; A protection box is fixed on the detection table, and the placement table is located in the protection box. One side of the protection box is not closed, and a pressure resistance detection mechanism is installed on the protection box.

2. A road foundation strength detection device as claimed in claim 1, characterized in that: A guide rod fixed to the side wall of the placing table is arranged above the table top, a guide hole is opened on the side wall of the limiting frame, the guide rod is slidably inserted into the guide hole, and the bottom of the limiting frame is slidably abutted against the table top of the placing table.

3. A road foundation strength detection device as claimed in claim 2, characterized in that: A limiting hole is vertically formed at one end of the guide rod close to the limiting frame, a slot corresponding to the limiting hole is formed on the limiting frame, the slot is connected to the guide hole, a limiting mechanism is slidably inserted in the slot, and the limiting mechanism is adapted to the limiting hole.

4. A road foundation strength detection device as claimed in claim 3, characterized in that: The limiting mechanism includes a limiting rod, a limiting cylinder, a limiting block and a limiting spring. The limiting cylinder is fixed on the limiting frame and corresponds to the position of the slot. A pull ring is fixed to one end of the limiting rod. The other end of the limiting rod is slidably inserted into the limiting cylinder and extends to slide with the slot. The limiting rod is adapted to the limiting hole. The limiting block slides in the limiting cylinder and is fixed on the limiting rod. The limiting spring is sleeved on the limiting rod and is located in the limiting cylinder on the side of the limiting block away from the limiting frame.

5. A road foundation strength detection device as claimed in claim 4, characterized in that: A slope is formed on one side of the lower end of the limiting rod close to the fixed end of the guide rod.

6. A road foundation strength detection device as claimed in claim 1, characterized in that: The pressure resistance detection mechanism includes a hydraulic cylinder, a pressure sensor and a pressure plate. The hydraulic cylinder is fixed on the protection box, the hydraulic rod of the hydraulic cylinder passes through the top of the protection box, the pressure sensor is fixed to the bottom of the hydraulic rod, and the pressure plate is fixed to the bottom of the pressure sensor.

7. A road foundation strength detection device as claimed in claim 1, characterized in that: It also includes a protective door, and sliding grooves are provided on both side walls of the protective box close to the unclosed side, and sliders are fixed to the top and bottom of the sliding grooves. Symmetrical movable grooves are provided on the upper and lower sides of the protective door, and movable rods are fixed in the movable grooves. The protective door is slidably matched with the sliding grooves, and the sliders are slidably matched in the movable grooves, and the sliders are slidably fitted on the movable rods.

8. A road foundation strength detection device as claimed in claim 7, characterized in that: The protective door is a transparent acrylic plate.

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