A testing cylinder device for concrete setting time

Abstract

The utility model relates to concrete setting time detection technical field, especially a kind of detection cylinder device for concrete setting time. Including detection cylinder body and cover plate, the bottom end of the detection cylinder body is provided with base plate, the upper end of the detection cylinder body is provided with top base plate, the middle surface of the top base plate is equipped with several overflow holes, the arc surface of the detection cylinder body both sides is equipped with handheld handle, the arc surface of the top base plate is fixedly connected with sealing ring, the cover plate is installed on the surface of top base plate, the surface of the sealing ring is inserted with the inner wall of cover plate, the base plate and the detection cylinder body are provided with positioning mechanism in the end of each other close, the positioning mechanism includes locating frame. The detection cylinder device for concrete setting time provided by the utility model has the advantages of quick stable alignment of detection cylinder body and base plate, and multiple sealing design effectively prevents slurry leakage.

Description

Technical Field

[0001] This utility model relates to the field of concrete setting time detection technology, and in particular to a concrete setting time detection cylinder device. Background Technology

[0002] The setting time of concrete is a crucial indicator for evaluating its workability and construction suitability. Accurately determining the setting time helps construction personnel to scientifically and rationally plan the construction schedule and procedures, ensuring project quality. This testing device typically consists of a container, a heating system, a temperature sensor, a mixing device, and a data acquisition system. The container holds the freshly mixed concrete; its smooth inner wall facilitates concrete flow and settlement. The heating system ensures testing is conducted under standard conditions, preventing environmental factors from affecting the setting time. The temperature sensor monitors the concrete temperature in real time to make corrections when calculating initial and final setting times. The mixing device maintains the homogeneity of the concrete, preventing water separation or settlement from affecting the test results.

[0003] Existing technologies, such as the utility model patent with publication number CN218995049U, disclose a concrete setting time detection device. This patent includes a mounting box, a lifting mechanism, and mounting components. The mounting box has an opening at its top. The lifting mechanism is located at the top of the mounting box and includes a cylinder, a guide rod, and a telescopic rod. The guide rod is fixedly installed at the top of the mounting box, and the cylinder is fixedly installed inside the mounting box. The free end of the cylinder extends through the opening to the top of the mounting box and is fixedly installed with the telescopic rod. This concrete setting time detection device can control the start of a motor to engage two sets of gears, driving the mixing rod to rotate and mix the concrete, preventing premature setting of the concrete after mixing. The mixing rod can be disassembled by rotating one set of mounting cylinders, and another set of mounting cylinders can be rotated and installed on the outer wall of the connecting rod to assemble the vibrating rod.

[0004] During the operation of the concrete setting time testing cylinder device, problems may arise such as difficulty in accurately aligning the testing cylinder body with the base plate, insufficient connection, or loosening during the test. These issues can lead to decreased sealing performance of the device, leakage of concrete slurry, deviation of testing conditions from standard requirements, and ultimately affect the accuracy and reliability of the setting time measurement results. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies in the operation of concrete setting time testing cylinder devices, such as difficulty in accurately aligning the testing cylinder body with the base plate, insufficient connection, or loosening during testing. These issues lead to decreased sealing performance, concrete slurry leakage, deviation of testing conditions from standard requirements, and ultimately affect the accuracy and reliability of setting time measurement results.

[0006] To solve the above technical problems, this utility model provides a concrete setting time testing cylinder device, comprising: a testing cylinder body and a cover plate. A base plate is provided at the bottom of the testing cylinder body, and a top plate is provided at the top of the testing cylinder body. Several overflow holes are formed on the middle surface of the top plate. Hand handles are installed on both sides of the arc surface of the testing cylinder body. A sealing ring is fixedly connected to the arc surface of the top plate. The cover plate is installed on the surface of the top plate, and the surface of the sealing ring is inserted into the inner wall of the cover plate. A positioning mechanism is provided at the end of the base plate and the testing cylinder body that are close to each other. The positioning mechanism includes a positioning frame, and the cross-section of the positioning frame is C-shaped. The inner wall of the positioning frame is fixedly connected to the bottom arc surface of the detection cylinder body. A rotating ring is rotatably connected to the inner wall of the positioning frame. The rotating ring has a "C" shaped cross section. A docking frame is abutted against the position of the positioning frame on the surface of the base plate. An inlay groove is opened on the upper surface of the docking frame. The inner wall of the inlay groove is slidably connected to the surface of the rotating ring. A connecting post is fixedly connected to the arc surface of the side wall of the base plate at the position of the docking frame. A positioning cylinder is slidably connected to the arc surface of the connecting post. Ears are fixedly connected to both sides of one end of the positioning cylinder. A connecting frame is fixedly connected to the surface of the docking frame. A through hole is opened on the surface of the connecting frame. The inner wall of the through hole slides through the surface of the positioning cylinder.

[0007] The aforementioned components achieve the following effects: By setting up a positioning mechanism, when the detection cylinder body needs to be installed on the base plate, the docking frame can be aligned with the connecting post on the side of the base plate first, and then the positioning cylinder can be rotated to pass through the through hole on the connecting frame. The ear and positioning cylinder work together to achieve rapid locking. Simultaneously, the rotating ring inside the C-shaped positioning frame can slide within the inlay groove, facilitating the adjustment of the relative position between the docking frame and the detection cylinder body. This achieves rapid, stable, and adjustable assembly and positioning of the detection cylinder body and the base plate, improving the assembly efficiency and ease of use of the device.

[0008] Preferably, a positioning groove is formed on the surface of the base plate, a sealing ring is fixedly connected to the inner wall of the positioning groove, the inner wall of the positioning groove is inserted into the bottom surface of the detection cylinder body, and the surface of the sealing ring abuts against the bottom of the detection cylinder body.

[0009] The aforementioned components achieve the following effect: by creating a positioning groove and installing a sealing ring on the surface of the base plate, the sealing ring tightly abuts against the bottom of the detection cylinder body when the bottom end of the detection cylinder body is inserted into the positioning groove. This serves a dual purpose: firstly, it provides accurate radial and axial positioning for the installation of the detection cylinder body, preventing its misalignment; secondly, the elastic deformation of the sealing ring creates an effective seal, preventing concrete slurry from leaking from the bottom and ensuring the accuracy of the detection.

[0010] Preferably, the surface of the rotating ring is provided with a plurality of connecting grooves, and two limiting posts are fixedly connected to the surface of the base plate corresponding to the position of the docking frame. Limiting holes are provided on both sides of the docking frame, and the inner wall of the limiting hole slides through the column body of the limiting post.

[0011] The effect achieved by the above components is as follows: by opening a connecting groove on the surface of the rotating ring and setting a limiting post on the base plate, and cooperating with the limiting hole on the docking frame, the precise pre-positioning of the docking frame and the base plate is realized.

[0012] Preferably, the connecting column is fitted with a spring, and the two ends of the spring are fixedly connected to the inner wall of the positioning cylinder and one end of the connecting column, respectively. A slot is provided on the surface of the connecting frame at the position corresponding to the through hole, and the inner wall of the slot is engaged with the surface of the ear platform.

[0013] The effect achieved by the above components is as follows: by fitting a spring on the connecting column and having both ends of the spring abut against the inner wall of the positioning cylinder and the end of the connecting column respectively, and by setting a slot to engage with the ear, an elastic self-locking function is realized.

[0014] Preferably, a closing mechanism is provided on all four sides of the upper end of the detection cylinder body. The closing mechanism includes a connecting frame, one side of which is fixedly connected to the surface of the detection cylinder body. A rotating frame is provided on the inner wall of the connecting frame. The rotating frame has an "L" shaped cross-section. A fixing plate is fixedly connected to the surface of the cover plate at the position corresponding to the upper end of the rotating frame. The surface of the fixing plate is slidably inserted into the upper inner wall of the rotating frame. An adjusting rod is threaded through one side of the upper end of the rotating frame. The rod body of the adjusting rod passes through a through hole opened on the fixing plate and slides in cooperation with the through hole.

[0015] The aforementioned components achieve the following effect: By setting up a closing mechanism, after the cover plate is placed on the top base plate, the L-shaped rotating frame can be rotated so that its upper inner wall inserts into the fixing plate. Then, the adjusting rod is tightened so that it passes through the hole in the fixing plate, thereby firmly locking the cover plate. The cover plate can be quickly opened by reversing the operation. This solves the problem that traditional cover plates may loosen due to vibration or concrete expansion, ensuring a reliable seal at the top during testing, while also making operation more convenient.

[0016] Preferably, a rotating shaft is fixedly connected to the inner wall of the connecting frame, and the rotating shaft is rotatably connected to the bottom inner wall of the rotating frame. Both ends of the rotating shaft are fitted with coil springs, and both ends of the coil springs are fixedly connected to the connecting frame and the rotating frame, respectively.

[0017] The effect achieved by the above components is that by setting coil springs at both ends of the rotating shaft in the connecting frame, the torsional elasticity of the coil springs allows the rotating frame to automatically return to its initial position when no external force is applied.

[0018] Preferably, one end of the adjusting rod has a plurality of friction grooves on its arc surface, and the plurality of friction grooves are evenly distributed on the arc surface of the adjusting rod.

[0019] The effect achieved by the above components is that by opening multiple evenly distributed friction grooves on the arc surface at one end of the adjusting rod, the friction between the finger and the adjusting rod is increased.

[0020] Compared with related technologies, the concrete setting time detection cylinder device provided by this utility model has the following beneficial effects: This invention provides a device for testing the setting time of concrete. Through the operation of the positioning mechanism, it achieves rapid, stable, and adjustable assembly between the testing cylinder body and the base plate. Specifically, by utilizing the sliding fit between the C-shaped positioning frame and the rotating ring, the positioning cylinder locking structure of the docking frame and connecting column, and the spring-driven lug and slot self-locking mechanism, precise alignment, anti-loosening, and convenient assembly and disassembly of the testing cylinder body are achieved. Simultaneously, the sealing ring within the positioning groove effectively prevents concrete slurry leakage, improving the assembly efficiency and sealing reliability of the testing cylinder.

[0021] By operating the closing mechanism, the cover plate and the top of the detection cylinder body are quickly locked and reliably sealed. Specifically, the L-shaped rotating frame and the fixed plate are interlocked, and the adjusting rod is tightened to ensure that the cover plate remains tightly closed even under vibration or concrete expansion conditions. At the same time, the coil spring automatically resets the rotating frame, ensuring smooth operation; the friction groove on the adjusting rod increases the operating friction and prevents slippage. Overall, this achieves the beneficial effects of convenient opening and closing of the cover plate, secure locking, and resistance to accidental loosening. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a concrete setting time detection cylinder device provided by this utility model; Figure 2 for Figure 1 The diagram shows the disassembled structure of the three-dimensional structure shown. Figure 3 for Figure 1 The diagram shows the structure of the positioning mechanism. Figure 4 for Figure 3 The enlarged structural diagram at point A is shown below: Figure 5 for Figure 1 The diagram shows the structure of the closing mechanism.

[0023] The following are the labeling elements in the diagram: 1. Detection cylinder body; 2. Base plate; 3. Hand handle; 4. Positioning mechanism; 401. Positioning groove; 402. Sealing ring; 403. Positioning frame; 404. Rotating ring; 405. Connecting groove; 406. Docking frame; 407. Embedding groove; 408. Limiting post; 409. Limiting hole; 410. Connecting frame; 411. Through hole; 412. Slot; 413. Connecting post; 414. Spring; 415. Positioning cylinder; 416. Ear platform; 5. Closing mechanism; 51. Connecting frame; 52. Rotating frame; 53. Coil spring; 54. Fixing plate; 55. Adjusting rod; 56. Friction groove; 57. Rotating shaft; 6. Cover plate; 7. Top base plate; 8. Overflow hole; 9. Sealing ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 5 The present invention provides a concrete setting time testing cylinder device, comprising: a testing cylinder body 1 and a cover plate 6. A base plate 2 is provided at the bottom end of the testing cylinder body 1, and a top plate 7 is provided at the top end of the testing cylinder body 1. A plurality of overflow holes 8 are provided on the middle surface of the top plate 7. Hand handles 3 are installed on both sides of the arc surface of the testing cylinder body 1. A sealing ring 9 is fixedly connected to the arc surface of the top plate 7. The cover plate 6 is installed on the surface of the top plate 7. The surface of the sealing ring 9 is inserted into the inner wall of the cover plate 6. A positioning mechanism 4 is provided at the end of the base plate 2 and the testing cylinder body 1 that are close to each other. A closing mechanism 5 is provided on all four sides of the upper end of the testing cylinder body 1.

[0027] In the embodiments of this utility model, please refer to Figure 2 , Figure 3 and Figure 4The positioning mechanism 4 includes a positioning frame 403, the positioning frame 403 having a "C" shaped cross section, the inner wall of the positioning frame 403 being fixedly connected to the bottom arc surface of the detection cylinder body 1, a rotating ring 404 being rotatably connected to the inner wall of the positioning frame 403, the rotating ring 404 having a "C" shaped cross section, a docking frame 406 abutting against the position of the positioning frame 403 on the surface of the base plate 2, an inlay groove 407 being provided on the upper surface of the docking frame 406, the inner wall of the inlay groove 407 being slidably connected to the surface of the rotating ring 404, a connecting post 413 being fixedly connected to the arc surface of the side wall of the base plate 2 corresponding to the position of the docking frame 406, a positioning cylinder 415 being slidably connected to the arc surface of the connecting post 413, an ear platform 416 being fixedly connected to both sides of one end of the positioning cylinder 415, a connecting frame 410 being fixedly connected to the surface of the docking frame 406, a through hole 411 being provided on the surface of the connecting frame 410, the inner wall of the through hole 411 being slidably penetrating the surface of the positioning cylinder 415. By setting the positioning mechanism 4, when it is necessary to install the detection cylinder body 1 on the base plate 2, the docking frame 406 can be aligned with the connecting post 413 on the side of the base plate 2 first, and then the positioning cylinder 415 can be rotated to pass through the through hole 411 on the connecting frame 410, and the ear platform 416 and the positioning cylinder 415 can be used to achieve quick locking. At the same time, the rotating ring 404 in the C-shaped positioning frame 403 can slide in the inlay groove 407, which facilitates the adjustment of the relative position of the docking frame 406 and the detection cylinder body 1, thereby realizing the quick, stable and adjustable assembly and positioning of the detection cylinder body 1 and the base plate 2, improving the assembly efficiency and ease of use of the device. The surface of the base plate 2 is provided with a positioning groove 401, and a sealing ring 402 is fixedly connected to the inner wall of the positioning groove 401. The inner wall of the positioning groove 401 is inserted into the bottom surface of the detection cylinder body 1, and the surface of the sealing ring 402 abuts against the bottom of the detection cylinder body 1. By creating a positioning groove 401 and setting a sealing ring 402 on the surface of the base plate 2, when the bottom end of the detection cylinder body 1 is inserted into the positioning groove 401, the sealing ring 402 tightly abuts against the bottom end of the detection cylinder body 1. This serves a dual purpose: firstly, it provides accurate radial and axial positioning for the installation of the detection cylinder body 1, preventing it from shifting; secondly, the elastic deformation of the sealing ring 402 forms an effective seal, preventing concrete slurry from leaking from the bottom and ensuring the accuracy of the detection. The surface of the rotating ring 404 is provided with several connecting grooves 405. Two limiting posts 408 are fixedly connected to the surface of the base plate 2 at the position corresponding to the docking frame 406. Limiting holes 409 are opened on both sides of the docking frame 406, and the inner wall of the limiting hole 409 slides through the post body of the limiting post 408.By creating a connecting groove 405 on the surface of the rotating ring 404 and setting a limiting post 408 on the base plate 2, which works in conjunction with the limiting hole 409 on the docking frame 406, precise pre-positioning of the docking frame 406 and the base plate 2 is achieved. A spring 414 is fitted onto the column of the connecting post 413, with both ends of the spring 414 fixedly connected to the inner wall of the positioning cylinder 415 and one end of the connecting post 413, respectively. A slot 412 is provided on the surface of the connecting frame 410 corresponding to the position of the through hole 411, and the inner wall of the slot 412 engages with the surface of the ear platform 416. By fitting a spring 414 onto the connecting post 413, with both ends of the spring 414 abutting against the inner wall of the positioning cylinder 415 and the end of the connecting post 413, and simultaneously engaging the slot 412 with the ear platform 416, an elastic self-locking function is achieved. In the embodiments of this utility model, please refer to Figure 5 The closing mechanism 5 includes a connecting frame 51, one side of which is fixedly connected to the surface of the detection cylinder body 1. A rotating frame 52 is provided on the inner wall of the connecting frame 51. The rotating frame 52 has an "L"-shaped cross-section. A fixing plate 54 is fixedly connected to the surface of the cover plate 6 at the position corresponding to the upper end of the rotating frame 52. The surface of the fixing plate 54 is slidably inserted into the upper inner wall of the rotating frame 52. An adjusting rod 55 is threaded through one side of the upper end of the rotating frame 52. The rod of the adjusting rod 55 passes through a through hole in the fixing plate 54 and slides within the through hole. By providing the closing mechanism 5, when the cover plate 6 is placed on the top base plate 7, the L-shaped rotating frame 52 can be rotated so that its upper inner wall inserts into the fixing plate 54. Then, the adjusting rod 55 is tightened so that it passes through the hole in the fixing plate 54, thereby firmly locking the cover plate 6. The cover plate 6 can be quickly opened by reversing the operation. This solves the problem that traditional cover plates 6 may loosen due to vibration or concrete expansion, ensuring a reliable seal at the top during testing. Operation is also more convenient. A rotating shaft 57 is fixedly connected to the inner wall of the connecting frame 51, and the rotating shaft 57 is rotatably connected to the bottom inner wall of the rotating frame 52. Both ends of the rotating shaft 57 are fitted with coil springs 53, which are fixedly connected to the connecting frame 51 and the rotating frame 52 respectively. By setting coil springs 53 at both ends of the rotating shaft 57 on the inner wall of the connecting frame 51, the torsional elasticity of the coil springs 53 allows the rotating frame 52 to automatically return to its initial position when no external force is applied. Several friction grooves 56 are evenly distributed on the arc surface of one end of the adjusting rod 55. By creating multiple evenly distributed friction grooves 56 on the arc surface of one end of the adjusting rod 55, the friction between the finger and the adjusting rod 55 is increased. The working principle of the concrete setting time testing cylinder device provided by this utility model is as follows: First, the device is assembled. The bottom end of the testing cylinder body 1 is inserted into the positioning groove 401 on the surface of the base plate 2, so that the sealing ring 402 on the inner wall of the positioning groove 401 is tightly abutted against the bottom end of the testing cylinder body 1, forming a bottom seal. Then, the positioning mechanism 4 is operated: the connecting post 413 on the side of the base plate 2 is aligned with the positioning cylinder 415, and the positioning cylinder 415 is pulled to compress the spring 414, so that the ear 416 passes through the through hole 411 on the connecting frame 410. After the positioning cylinder 415 is released, the spring 414 returns to its original position, and the ear 416 is snapped into the slot 412 on the surface of the connecting frame 410. At the same time, the rotating ring 404 slides in the inlay groove 407 of the docking frame 406, so that the positioning frame 403 and the docking frame 406 are tightly fitted. The limiting post 408 on the base plate 2 is inserted into the limiting hole 409 of the docking frame 406 to prevent horizontal rotation. At this point, the detection cylinder body 1 and the base plate 2 have completed a quick and stable locking connection.

[0028] Next, the concrete mixture is added. The concrete slurry, prepared according to the mix proportion, is poured into the test cylinder body 1 in layers. Each layer needs to be tamped or vibrated until the slurry is close to the top base plate 7. Since the top base plate 7 has several overflow holes 8 in the middle, excess slurry or air can be discharged from the overflow holes 8, ensuring that the filling is dense and the surface is flat.

[0029] Then install the cover plate 6. Fasten the cover plate 6 onto the top base plate 7, so that the inner wall of the cover plate 6 engages with the sealing ring 9 on the arc surface of the top base plate 7, forming a top seal. Next, operate the closing mechanism 5: rotate the L-shaped rotating frame 52, causing its upper inner wall to slide into the surface of the fixing plate 54 on the side of the cover plate 6, and then tighten the adjusting rod 55, so that the adjusting rod 55 passes through or presses against the corresponding hole on the fixing plate 54, thereby locking the cover plate 6 onto the top base plate 7. Simultaneously, the coil springs 53 at both ends of the rotating shaft 57 provide a reset torque during rotation, facilitating the next operation; the friction grooves 56 on the adjusting rod 55 increase finger friction, ensuring sufficient locking force.

[0030] During use, the assembled testing cylinder device should be placed in a curing environment. When it is necessary to test the concrete setting time, the cover plate 6 can be opened, and standard testing tools such as a penetration resistance meter can be used to perform a penetration test on the concrete surface inside the cylinder through the overflow hole 8 or directly. The penetration resistance values ​​at different time points are recorded, and the initial setting and final setting times are determined according to relevant standards. During the testing process, the bottom sealing ring 402 and the top sealing ring 9 work together to prevent moisture evaporation and grout leakage, ensuring stable testing conditions.

[0031] After the test is completed, the cover plate 6 can be removed by reversing the closing mechanism 5; by pulling the positioning cylinder 415 in the opposite direction, the earpiece 416 can be disengaged from the slot 412, and the detection cylinder body 1 can be separated from the base plate 2 for easy cleaning and next use.

[0032] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting the setting time of concrete, characterized in that, include: The test cylinder body (1) and cover plate (6) are provided. The bottom end of the test cylinder body (1) is provided with a base plate (2). The end of the base plate (2) that is close to the test cylinder body (1) is provided with a positioning mechanism (4). The positioning mechanism (4) includes a positioning frame (403). The cross-section of the positioning frame (403) is "C". The inner wall of the positioning frame (403) is fixedly connected to the arc surface of the bottom end of the test cylinder body (1). The inner wall of the positioning frame (403) is rotatably connected with a rotating ring (404). The cross-section of the rotating ring (404) is "C". The surface of the base plate (2) is abutted against a docking frame (406) at the position corresponding to the positioning frame (403). The upper surface of the frame (406) is provided with an inlay groove (407). The inner wall of the inlay groove (407) is slidably connected to the surface of the rotating ring (404). The arc surface of the side wall of the base plate (2) is fixedly connected to the position of the docking frame (406) with a connecting column (413). The arc surface of the connecting column (413) is slidably connected to a positioning cylinder (415). Both sides of one end of the positioning cylinder (415) are fixedly connected with ear platforms (416). The surface of the docking frame (406) is fixedly connected to a connecting frame (410). The surface of the connecting frame (410) is provided with a through hole (411). The inner wall of the through hole (411) slides through the surface of the positioning cylinder (415).

2. A concrete setting time detection cartridge apparatus according to claim 1, characterised in that, The upper end of the detection cylinder body (1) is provided with a top base plate (7). The middle surface of the top base plate (7) is provided with several overflow holes (8). Hand handles (3) are installed on both sides of the arc surface of the detection cylinder body (1). A sealing ring (9) is fixedly connected to the arc surface of the top base plate (7). The cover plate (6) is installed on the surface of the top base plate (7). The surface of the sealing ring (9) is inserted into the inner wall of the cover plate (6). The surface of the base plate (2) is provided with a positioning groove (401). A sealing ring (402) is fixedly connected to the inner wall of the positioning groove (401). The inner wall of the positioning groove (401) is inserted into the bottom surface of the detection cylinder body (1). The surface of the sealing ring (402) abuts against the bottom of the detection cylinder body (1).

3. A concrete setting time detection cartridge apparatus as claimed in claim 1, wherein, The rotating ring (404) has several connecting grooves (405) on its surface. The base plate (2) has two limiting posts (408) fixedly connected to the position of the docking frame (406). Limiting holes (409) are opened on both sides of the docking frame (406). The inner wall of the limiting hole (409) slides through the column of the limiting post (408).

4. The apparatus for detecting the setting time of concrete according to claim 1, wherein The connecting column (413) is fitted with a spring (414), and the two ends of the spring (414) are fixedly connected to the inner wall of the positioning cylinder (415) and one end of the connecting column (413), respectively. The surface of the connecting frame (410) is provided with a slot (412) corresponding to the position of the through hole (411), and the inner wall of the slot (412) is engaged with the surface of the ear platform (416).

5. The apparatus for detecting the setting time of concrete according to claim 1, wherein The upper four sides of the detection cylinder body (1) are provided with a closing mechanism (5). The closing mechanism (5) includes a connecting frame (51). One side of the connecting frame (51) is fixedly connected to the surface of the detection cylinder body (1). The inner wall of the connecting frame (51) is provided with a rotating frame (52). The cross section of the rotating frame (52) is "L". The surface of the cover plate (6) is fixedly connected with a fixing plate (54) at the position corresponding to the upper end of the rotating frame (52). The surface of the fixing plate (54) is slidably inserted into the upper inner wall of the rotating frame (52). An adjusting rod (55) is threaded through one side of the upper end of the rotating frame (52). The rod of the adjusting rod (55) passes through the through hole opened on the fixing plate (54) and slides with the through hole.

6. A concrete setting time testing cartridge apparatus as claimed in claim 5, wherein, The inner wall of the connecting frame (51) is fixedly connected to a rotating shaft (57), which is rotatably connected to the bottom inner wall of the rotating frame (52). Both ends of the rotating shaft (57) are fitted with coil springs (53), and both ends of the coil springs (53) are fixedly connected to the connecting frame (51) and the rotating frame (52) respectively.

7. A concrete setting time detection cartridge apparatus as claimed in claim 5, wherein, The adjusting rod (55) has a plurality of friction grooves (56) on one end of its arc surface, and the plurality of friction grooves (56) are evenly distributed on the arc surface of the adjusting rod (55).

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