Detection device based on civil engineering concrete strength experiment

Abstract

The utility model relates to a detection device based on civil engineering concrete strength experiment, which comprises a support table and a hydraulic detection mechanism arranged on the support table, a driving mechanism is arranged in the support table, and the driving mechanism comprises a driving cavity formed in the support table. A main gear and a plurality of auxiliary gears meshed with the main gear are rotationally connected into the driving cavity, a servo motor is installed at the lower end of the supporting table, the output end of the servo motor is fixedly connected with the main gear, and a plurality of sliding grooves located in the upper side of the driving cavity are formed in the supporting table; according to the utility model, a concrete sample can be automatically pushed to the center of the supporting table, so that the center of the concrete sample is pressed by the hydraulic detection mechanism, and the situation that the concrete sample and a hydraulic device are not accurate in position, so that corners of the concrete sample are collapsed in advance, and the detection accuracy of concrete strength is seriously influenced is avoided; meanwhile, the extrusion mechanism and the trigger assembly are matched, so that chippings can be prevented from splashing to a certain extent after the concrete sample is pressed.

Description

Technical Field

[0001] The utility model relates to a detection device for concrete strength experiment, in particular to a detection device based on civil engineering concrete strength experiment and applied in the technical field of civil engineering experimental equipment. Background Art

[0002] In civil engineering, concrete strength tests are usually conducted through pressure tests, also known as compression tests. To conduct concrete strength tests, a pressure testing machine can be used. A pressure testing machine is a device used to apply pressure to concrete specimens. A pressure testing machine usually consists of a hydraulic system and a control system, which can apply continuous and gradually increasing pressure to concrete specimens. Through the coordination of the device, the strength performance of concrete specimens during the stress process can be comprehensively tested and analyzed, thereby evaluating the quality and strength characteristics of concrete.

[0003] Chinese utility model patent CN220188257U discloses a concrete strength testing device, including a base and a testing platform, both sides of the testing platform are provided with grooves, screws are rotatably installed in the grooves, a slider is threadedly connected to the screws, a support seat is fixedly connected to the top of the slider, a connecting rod is fixedly connected to one side of the support seat, a clamp is fixedly connected to one end of the connecting rod, a protective cover is slidably sleeved on the connecting rod, and a spring is sleeved on the connecting rod between the support seat and the protective cover. The utility model sets the protective cover and the spring, and the spring pushes the two protective covers to abut against each other, so that the protective cover shields the surrounding of the concrete test block, prevents the debris after the concrete test block is broken from splashing everywhere, reduces pollution, and avoids injuries to personnel.

[0004] The above patent utilizes a protective cover to prevent the debris from splashing after the concrete test block is broken, reduce pollution, and avoid personal injury, but it cannot center the position of the concrete sample. The protective cover will also affect the movement of the concrete sample by the staff. Once the position of the concrete sample is not accurate with the position of the hydraulic device, the corners of the concrete sample will collapse prematurely, which will seriously affect the accuracy of the concrete strength detection. For this reason, we propose a detection device based on the civil engineering concrete strength experiment. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that once the position of the concrete sample and the position of the hydraulic device are inaccurate, the corners of the concrete sample will be crushed prematurely, which will seriously affect the accuracy of concrete strength detection.

[0006] In order to solve the above problems, the utility model provides a detection device based on a civil engineering concrete strength experiment, including a support platform and a hydraulic detection mechanism installed on the support platform, a driving mechanism is installed inside the support platform, the driving mechanism includes a driving cavity excavated inside the support platform, a main gear and a plurality of sub-gears meshing with the main gear are rotatably connected inside the driving cavity, a servo motor is installed at the lower end of the support platform, and the output end of the servo motor is fixedly connected to the main gear, a plurality of sliding grooves are excavated inside the support platform and located on the upper side of the driving cavity, a plurality of sliding grooves are slidably connected inside the plurality of sliding grooves, a transmission gear meshing with the rack is rotatably connected inside the plurality of sliding grooves, a connecting rod is fixedly connected between the transmission gear and the sub-gear, a plurality of sliding openings are excavated on the support platform and are respectively connected to the sliding grooves, a plurality of extrusion mechanisms are slidably connected to the upper side of the support platform, and a connecting block is fixedly connected between the extrusion mechanism and the rack.

[0007] As a further improvement of the present application, the extrusion mechanism includes a fixed block fixedly connected to the rack, two baffles are hinged on the fixed block, and a trigger assembly is installed on the fixed block.

[0008] As a further improvement of the present application, the trigger assembly includes an installation cavity excavated inside the fixed block, a top column is inserted into the installation cavity, and a threaded sleeve fixedly connected to the fixed block is threadedly connected to the top column.

[0009] As a further improvement of the present application, a turntable is rotatably connected to the end of the top column, a fixing plate is fixedly connected to the inside of the installation cavity, and a connecting spring is fixedly connected between the fixing plate and the turntable.

[0010] As another improvement of the present application, a sliding column is slidably connected inside the installation cavity, and a tension spring is fixedly connected between the sliding column and the fixed block.

[0011] As another improved supplement of the present application, tension blocks are fixedly connected to the left and right side walls of the sliding column, mounting blocks are fixedly connected to the side walls of the two baffles facing away from each other, and a connecting rope is fixedly connected between the mounting block and the tension block on the same side.

[0012] As another improvement supplement of the present application, grooves matching the top column are bored on opposite side walls of the two baffles, and iron sheets are fixedly connected inside the grooves, and magnetic strips magnetically attracted to the iron sheets are fixedly connected to the left and right side walls of the top column.

[0013] As another improvement of the present application, a conical block is fixedly connected to the top end of the top column.

[0014] In summary, the concrete sample can be automatically pushed to the center of the support table, so that the center of the concrete sample is subjected to the pressure of the hydraulic detection mechanism, thereby avoiding the inaccuracy between the position of the concrete sample and the position of the hydraulic device, which will cause the corners of the concrete sample to collapse prematurely, thereby seriously affecting the detection accuracy of the concrete strength. At the same time, in conjunction with the extrusion mechanism and the trigger component, it can prevent the debris from splashing after the concrete sample is compressed to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional image of the present application;

[0016] Figure 2 This is an exploded view of the interior of the support platform for this application;

[0017] Figure 3 This is an exploded view of the extrusion mechanism of this application;

[0018] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of the top column part of this application;

[0020] Figure 6 This is a state diagram of the extrusion mechanism of the present application when it is centered on the concrete sample;

[0021] Figure 7 This is a state diagram of the extrusion mechanism of this application when it is unfolded.

[0022] Description of the numbers in the figure:

[0023] 1. Support platform; 101. Hydraulic testing mechanism;

[0024] 2. Driving mechanism; 201. Driving chamber; 202. Main gear; 203. Sub gear; 204. Sliding groove; 205. Rack; 206. Transmission gear; 207. Connecting rod; 208. Connecting block; 209. Sliding port; 210. Servo motor;

[0025] 3. Extrusion mechanism; 301. Fixed block; 302. Baffle;

[0026] 4. Trigger assembly; 401. Mounting cavity; 402. Top column; 403. Threaded sleeve; 404. Turntable; 405. Fixed plate; 406. Connecting spring; 407. Sliding column; 408. Tension spring; 409. Tension block; 410. Mounting block; 411. Connecting rope; 412. Iron sheet; 413. Magnetic strip; 414. Conical block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 7 As shown, the utility model provides a detection device based on a civil engineering concrete strength experiment, including a support platform 1 and a hydraulic detection mechanism 101 installed on the support platform 1, the hydraulic detection mechanism 101 is used to apply pressure to a concrete sample, and then the hardness of the concrete is obtained by the applied pressure, the hydraulic detection mechanism 101 is located at the center of the support platform 1, the structure and principle of the hydraulic detection mechanism 101 are both prior art, and are not repeated here, a driving mechanism 2 is installed inside the support platform 1, the driving mechanism 2 includes a driving cavity 201 excavated inside the support platform 1, and the driving cavity 201 has a driving mechanism 201 inside. The main gear 202 and a plurality of sub-gears 203 meshing with the main gear 202 are rotatably connected. The driving cavity 201 is excavated according to the contours of the main gear 202 and the sub-gears 203, which can effectively reduce the space occupied by the driving cavity 201, thereby improving the pressure resistance of the support platform 1. The servo motor 210 is fixedly connected to the bottom of the support platform 1 by bolts, and the output end of the servo motor 210 is fixedly connected to the main gear 202. The servo motor 210 can automatically stop rotating when a large torque is detected. The driving cavity 201 adopts a brushless DC servo motor of Guangzhou Demark Motor Co., Ltd.

[0029] A plurality of sliding grooves 204 are excavated inside the support platform 1 and are located on the upper side of the driving cavity 201. The plurality of sliding grooves 204 are symmetrically distributed in a ring shape. Racks 205 are slidably connected inside the plurality of sliding grooves 204. Transmission gears 206 meshing with the racks 205 are rotatably connected inside the plurality of sliding grooves 204. A connecting rod 207 is fixedly connected between the transmission gear 206 and the sub-gear 203. A bearing is installed on the connecting rod 207, which is connected to the support platform 1 through the bearing to realize rotation. The structure and principle of the bearing are all existing technologies and are not repeated here. A plurality of sliding openings 209 are excavated on the support platform 1 and are respectively connected to the sliding grooves 204. The sliding openings 209 can facilitate the movement of the connecting block 208. A plurality of extrusion mechanisms 3 are slidably connected on the upper side of the support platform 1. A connecting block 208 is fixedly connected between the extrusion mechanism 3 and the rack 205.

[0030] Supplementary explanation: This device is only suitable for concrete samples in the shape of cubes, rectangular blocks with square cross-sections, and cylinders. The shape can meet the needs of most existing concrete samples, but it is not suitable for other special-shaped concrete samples.

[0031] The extrusion mechanism 3 includes a fixed block 301 fixedly connected to the rack 205, and two baffles 302 are hinged on the fixed block 301. The fixed block 301 is hinged by a parent-child hinge to improve the stability of the structure. The structure and principle of the parent-child hinge are existing technologies and will not be repeated here. A trigger component 4 is installed on the fixed block 301.

[0032] The trigger assembly 4 includes an installation cavity 401 excavated inside the fixed block 301, a top column 402 is inserted into the installation cavity 401, a threaded sleeve 403 fixedly connected to the fixed block 301 is threadedly connected to the top column 402, a turntable 404 is rotatably connected to the end of the top column 402, a fixed plate 405 is fixedly connected to the inside of the installation cavity 401, a connecting spring 406 is fixedly connected between the fixed plate 405 and the turntable 404, when the top column 402 is pressurized, it will rotate through the threaded action of the threaded sleeve 403, and then when the top column 402 is no longer pressurized, the restoring force of the connecting spring 406 will drive the top column 402 to rotate and reset again.

[0033] A sliding column 407 is slidably connected inside the installation cavity 401, and a tension spring 408 is fixedly connected between the sliding column 407 and the fixed block 301. In the standby state, the tension spring 408 is in a stretched state, and tension blocks 409 are fixedly connected to the left and right side walls of the sliding column 407, and the mounting blocks 410 are fixedly connected to the side walls of the two baffles 302 that are opposite to each other, and a connecting rope 411 is fixedly connected between the mounting block 410 and the tension block 409 on the same side.

[0034] The opposite side walls of the two baffles 302 are each bored with a groove matching the top column 402, and an iron sheet 412 is fixedly connected inside the groove, and the left and right side walls of the top column 402 are both fixedly connected with a magnetic strip 413 magnetically attracted to the iron sheet 412. In the standby state, the magnetic attraction between the iron sheet 412 and the magnetic strip 413 prevents the baffle 302 from being unfolded under the tension of the tension spring 408. When the top column 402 is subjected to pressure, the threaded sleeve 403 rotates through the threaded action of the threaded sleeve 403, so that the positions of the iron sheet 412 and the magnetic strip 413 no longer correspond, thereby weakening the magnetic force between the iron sheet 412 and the magnetic strip 413. At this time, the baffle 302 can be unfolded under the tension of the tension spring 408.

[0035] A conical block 414 is fixedly connected to the top of the top column 402, which can reduce the contact surface between the top column 402 and the concrete sample, thereby reducing the friction between the top column 402 and the concrete sample, reducing the rotation resistance of the top column 402, and making it easier to trigger the expansion of the baffle 302.

[0036] Principle and process of this utility model:

[0037] When using the device, first, the staff places the concrete sample to be tested on the support platform 1, and then the staff starts the servo motor 210, the servo motor 210 drives the main gear 202 to rotate, the main gear 202 drives multiple sub-gears 203 to rotate simultaneously, the sub-gear 203 drives the rack 205 to move through the connecting rod 207 and the transmission gear 206, and drives the extrusion mechanism 3 to move through the rack 205 and the connecting block 208, so that the multiple extrusion mechanisms 3 clamp the concrete sample and push the concrete to the center of the support platform 1, as shown in FIG. Figure 6 As shown, it is convenient for the hydraulic testing mechanism 101 to perform hydraulic testing on it;

[0038] When the concrete sample is pushed to the center of the support platform 1, the extrusion mechanism 3 cannot move further, and the driving chamber 201 automatically stops rotating after detecting that the torque becomes larger. In addition, the top column 402 will also retract due to the pressure, and cooperate with the threaded action between the top column 402 and the threaded sleeve 403. At this time, the top column 402 retracts and rotates at the same time, so that the positions of the iron sheet 412 and the magnetic strip 413 no longer correspond, thereby weakening the magnetic force between the iron sheet 412 and the magnetic strip 413, so that the sliding column 407, under the tension of the tension spring 408, pulls the baffle 302 through the connecting rope 411 to expand it. Figure 7 As shown, when the hydraulic testing mechanism 101 performs a pressure test on the concrete sample, it effectively prevents debris from splashing. The method of first positioning the concrete sample and then unfolding the baffle 302 enables the baffle 302 to adapt to concrete samples of different sizes. Even for smaller concrete samples, the unfolded multiple baffles 302 can contact each other to surround the concrete sample. Compared with traditional fixed baffles, it has better adaptability. Finally, the staff can start the hydraulic testing mechanism 101 to perform hydraulic testing on the concrete sample to obtain the hardness value of the concrete sample.

[0039] After the test is completed, the staff needs to start the servo motor 210 to reverse, drive the main gear 202 and the sub-gear 203 together with the rack 205 to reset, thereby driving the extrusion mechanism 3 to reset. At this time, the top column 402 is no longer in contact with the concrete sample, and under the thrust of the connecting spring 406, the top column 402 is driven to rotate and reset. At this time, the staff only needs to manually merge the two baffles 302. At this time, the iron sheet 412 of the baffle 302 will no longer expand due to the magnetic force of the magnetic strip 413, and finally complete the state before the entire device works.

[0040] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A detection device based on civil engineering concrete strength experiment, characterized in that: The invention comprises a support platform (1) and a hydraulic detection mechanism (101) installed on the support platform (1); a driving mechanism (2) is installed inside the support platform (1); the driving mechanism (2) comprises a driving cavity (201) excavated inside the support platform (1); a main gear (202) and a plurality of sub-gears (203) meshing with the main gear (202) are rotatably connected inside the driving cavity (201); a servo motor (210) is installed at the lower end of the support platform (1), and an output end of the servo motor (210) is fixedly connected to the main gear (202); a driving cavity (201) is excavated inside the support platform (1) and is located on the upper side of the driving cavity (201); A plurality of sliding grooves (204), each of which is slidably connected to a rack (205), a plurality of the sliding grooves (204) is rotatably connected to a transmission gear (206) meshing with the rack (205), a connecting rod (207) is fixedly connected between the transmission gear (206) and the sub-gear (203), a plurality of sliding openings (209) respectively connected to the sliding grooves (204) are cut on the support platform (1), a plurality of extrusion mechanisms (3) are slidably connected to the upper side of the support platform (1), and a connecting block (208) is fixedly connected between the extrusion mechanism (3) and the rack (205).

2. A detection device based on civil engineering concrete strength experiment according to claim 1, characterized in that: The squeezing mechanism (3) comprises a fixed block (301) fixedly connected to the rack (205), two baffles (302) are hingedly connected to the fixed block (301), and a trigger assembly (4) is installed on the fixed block (301).

3. A detection device based on civil engineering concrete strength experiment according to claim 2, characterized in that: The trigger assembly (4) comprises an installation cavity (401) bored inside the fixing block (301), a top column (402) is inserted into the installation cavity (401), and a threaded sleeve (403) fixedly connected to the fixing block (301) is threadedly connected to the top column (402).

4. A detection device based on civil engineering concrete strength experiment according to claim 3, characterized in that: The end of the top column (402) is rotatably connected to a rotating disk (404), a fixing plate (405) is fixedly connected inside the installation cavity (401), and a connecting spring (406) is fixedly connected between the fixing plate (405) and the rotating disk (404).

5. A detection device based on civil engineering concrete strength experiment according to claim 4, characterized in that: A sliding column (407) is slidably connected inside the installation cavity (401), and a tension spring (408) is fixedly connected between the sliding column (407) and the fixed block (301).

6. A detection device based on civil engineering concrete strength experiment according to claim 5, characterized in that: The left and right side walls of the sliding column (407) are both fixedly connected with tension blocks (409), the side walls of the two baffles (302) facing away from each other are both fixedly connected with mounting blocks (410), and a connecting rope (411) is fixedly connected between the mounting blocks (410) and the tension blocks (409) on the same side.

7. A detection device based on civil engineering concrete strength experiment according to claim 6, characterized in that: A groove matching the top column (402) is bored on one side wall of the two baffles (302), and an iron sheet (412) is fixedly connected inside the groove. A magnetic strip (413) magnetically attracted to the iron sheet (412) is fixedly connected to the left and right side walls of the top column (402).

8. A detection device based on civil engineering concrete strength experiment according to claim 7, characterized in that: A conical block (414) is fixedly connected to the top end of the top column (402).

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