A detection device for concrete highway construction

Abstract

The present invention relates to the field of concrete detection, and discloses a detection device for concrete highway construction, comprising: a detection support; a detection platform provided on the detection support, with sample grids provided on the detection platform; an impact platform provided on the detection support, located at the top of the detection platform; through the design of the counterweight component in this application, during each impact, the weight of the impact platform gradually increases, enabling the concrete sample core to experience the entire process from slight damage to final failure. This method avoids the problem of premature failure of the sample core caused by directly applying the maximum impact force, can observe the damage conditions of the concrete under different impact intensities, and provides a more comprehensive evaluation of the impact resistance performance. In addition, by gradually increasing the impact force, different degrees of impact that the concrete may suffer during actual use can be simulated, ensuring that the test results are more valuable for reference.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete detection, and particularly relates to a detection device for concrete highway construction. Background Art

[0002] During highway construction, the quality of concrete directly affects the durability and service life of the road. To ensure that the concrete meets the construction standards, a series of performance tests need to be carried out on it. Among them, the impact test is a key index, which can evaluate the impact resistance of concrete under sudden loads.

[0003] Currently, common concrete impact test methods usually adopt a fixed impact energy. By applying a constant impact force and recording the damage situation of the concrete after multiple impacts, its impact resistance is evaluated. However, this method has certain limitations in practical applications:

[0004] During the use of the highway, the concrete pavement may be subjected to impacts of different intensities, such as slight impacts caused by small stones falling, or severe impacts caused by the bursting of heavy vehicle tires, object falling, etc. However, the impact force applied each time in the existing test method is constant, and it cannot simulate these impact situations of different intensities, resulting in a certain deviation between the test results and the actual working conditions.

[0005] Since the existing test methods mainly rely on the number of impacts to judge the durability of concrete, it is difficult to accurately analyze the failure limit of the material under different impact intensities. For example, some high-strength concretes may remain undamaged for a long time under small impact forces, but will fail quickly under larger impact forces, and the fixed impact force test method cannot effectively identify this critical failure point. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the present invention provides a detection device for concrete highway construction, aiming to alleviate the above problems at least to a certain extent.

[0007] The above technical object of the present invention is achieved through the following technical solutions:

[0008] A detection device for concrete highway construction, comprising:

[0009] A detection support;

[0010] A detection platform provided on the detection support, and a sample grid is provided on the detection platform;

[0011] An impact platform provided on the detection support, located at the top of the detection platform;

[0012] A storage grid provided on the detection support, fixed to the detection support, the storage grid has a plurality of storage cavities, and counterweights are provided in the storage cavities;

[0013] A plurality of counterweight cells provided at the top of the impact platform, the counterweight cells having a plurality of counterweight cavities adapted to the storage cavities;

[0014] A positioning component provided on the sample cell, configured to position the test sample in the sample cell when the sample cell moves upward to a preset position;

[0015] A moving component provided between the test support and the sample cell, configured to move the position of the sample cell up and down;

[0016] A testing component provided between the test support and the impact platform, configured to move the impact platform, and the testing component can release the impact platform when moving the impact platform upward to a preset position;

[0017] A counterweight component provided between the storage cell and the counterweight cell, configured to move the position of the counterweight block.

[0018] Preferably, the moving component includes an oil cylinder connected to the inner bottom surface of the test support, and a telescopic shaft of the oil cylinder is connected to the bottom of the sample cell.

[0019] Preferably, the positioning component includes a plurality of positioning ports opened on the outer wall of the sample cell, a positioning block is slidably connected in the positioning port, a spring a is connected between the positioning block and the positioning port, a push rod is slidably connected to one side of the sample cell, a spring b is connected between the push rod and the sample cell, and the bottom of the push rod is rotatably connected to a connecting rod rotatably connected to the positioning block.

[0020] Preferably, the testing component includes a rotating shaft rotatably connected to the test support, a gear a is connected to the rotating shaft, the gear a is an incomplete gear, a rack a is connected to the impact platform and is adapted to the gear a, and a motor is connected to the test support, and a driving shaft of the motor is connected to the rotating shaft.

[0021] Preferably, the counterweight component can move one of the counterweight blocks in the corresponding storage cavity into a corresponding counterweight cavity each time the testing component moves the impact platform upward to a preset position, and the plurality of counterweight blocks move sequentially from bottom to top;

[0022] The counterweight component includes a plurality of limiting sliding grooves opened in the storage cavity, a limiting push block is slidably connected in the limiting sliding groove, a spring c is connected between the limiting push block and the storage cavity, a limiting socket penetrating the storage cell and the counterweight block is opened at the top of the storage cell, and a limiting frame is slidably connected in the limiting socket.

[0023] Preferably, the counterweight component further includes a connecting shaft rotatably connected to the detection bracket. A gear b is provided on the connecting shaft. A traction shaft is also rotatably connected to the detection bracket. A gear c adapted to the gear b is provided on the traction shaft. A traction rope is wound around the traction shaft. One end of the traction rope is connected to the limiting frame. A spring d is connected between the limiting frame and the storage grid. A chain is provided between the rotating shaft and the connecting shaft.

[0024] Preferably, when the moving component moves the sample grid downward to a preset position, the counterweight component can synchronously move the counterweight blocks in the plurality of counterweight cavities into the storage cavity;

[0025] The counterweight component further includes a pushing groove formed on both sides of the counterweight block. A sliding rod is slidably connected to the detection platform. A pushing rod extending into the pushing groove is slidably connected to the sliding rod. Connecting openings for the movement of the pushing rod are formed on the counterweight grid and the storage grid. A lead screw is rotatably connected to the detection platform. The sliding rod is threadedly connected to the lead screw. A gear d is connected to the lead screw. A rack b meshing with the gear d is connected to the outer wall of the sample grid.

[0026] Preferably, a ratchet mechanism is provided between the connecting shaft and the detection bracket, and a spring e is provided between the gear c and the detection bracket.

[0027] Preferably, a pushing frame a is connected to the top of the sliding rod. A pushing frame b is connected to one side of the pushing frame a. The gear b is located between the pushing frame a and the pushing frame b.

[0028] Preferably, a plurality of rollers are rotatably connected to the bottoms of the counterweight cavity and the storage cavity.

[0029] In summary, the present invention mainly has the following beneficial effects:

[0030] Through the design of the counterweight component in this application, during each impact, the weight of the impact platform gradually increases, enabling the concrete sample core to experience the entire process from slight damage to ultimate failure. This method avoids the problem of premature failure of the sample core caused by directly applying the maximum impact force, can observe the damage conditions of the concrete under different impact intensities, and provides a more comprehensive evaluation of the impact resistance performance.

[0031] In addition, by gradually increasing the impact force, different degrees of impacts that the concrete may suffer during actual use can be simulated, ensuring that the test results are more valuable for reference. Compared with the test with a fixed impact force, this application can provide a more accurate analysis of the failure behavior, identify the critical failure point of the material, optimize the test process, and avoid distortion caused by excessive impact force during the test.

[0032] Moreover, during the testing process, by pushing the counterweight blocks into the counterweight cavity from bottom to top in sequence, the center of gravity of the impact platform remains relatively stable, avoiding the deviation of the impact direction caused by uneven counterweight, thus improving the stability and reliability of the test.

[0033] This application also ensures the stability of the sample core during the impact test through the positioning component, avoiding test errors caused by the displacement or inclination of the sample core. After the test, the counterweight component can synchronously return the counterweight blocks to the storage cavity, facilitating the restoration of the initial state and preparing for the next test. This design improves the automation level of the equipment and enhances the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the overall structural schematic diagram of the present invention;

[0035] Figure 2 is the sectional schematic diagram of the detection bracket structure of the present invention;

[0036] Figure 3 is the schematic diagram of the sample grid structure of the present invention;

[0037] Figure 4 is the sectional schematic diagram of the sample grid structure of the present invention;

[0038] Figure 5 is the schematic diagram of the impact platform structure of the present invention;

[0039] Figure 6 is the schematic diagram of the counterweight grid structure of the present invention;

[0040] Figure 7 is the schematic diagram of the storage grid structure of the present invention;

[0041] Figure 8 is Figure 2 the enlarged schematic diagram of the local structure at a in

[0042] Figure 9 is the schematic diagram of the push frame a and push frame b of the present invention;

[0043] Figure 10 is the schematic diagram of the ratchet mechanism of the present invention.

[0044] REFERENCE SIGNS:

[0045] 100, detection bracket; 101, detection platform; 102, sample grid; 103, impact platform; 104, storage grid; 105, storage cavity; 106, counterweight block; 107, counterweight grid; 108, counterweight cavity;

[0046] 200, oil cylinder; 201, positioning port; 202, positioning block; 203, spring a; 204, ejector rod; 205, spring b; 206, connecting rod;

[0047] 300, Rotating shaft; 301, Gear a; 302, Rack a; 303, Motor;

[0048] 400, Limit chute; 401, Limit push block; 402, Spring c; 403, Limit socket; 404, Limit frame; 405, Connecting shaft; 406, Gear b; 407, Traction shaft; 408, Gear c; 409, Traction rope; 410, Spring d; 411, Chain;

[0049] 500, Pushing groove; 501, Sliding rod; 502, Pushing rod; 503, Connecting opening; 504, Screw rod; 505, Gear d; 506, Rack b; 507, Ratchet mechanism; 508, Spring e; 509, Pushing frame a; 510, Pushing frame b; 511, Roller. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Reference Figures 1 - 10 , a detection device for concrete road construction, including:

[0052] Detection bracket 100;

[0053] A detection platform 101 provided on the detection bracket 100, and a sample grid 102 is provided on the detection platform 101;

[0054] An impact platform 103 provided on the detection bracket 100, located at the top of the detection platform 101;

[0055] A storage grid 104 provided on the detection bracket 100, fixed to the detection bracket 100, the storage grid 104 has a plurality of storage chambers 105, and a counterweight 106 is provided in the storage chamber 105;

[0056] A plurality of counterweight grids 107 provided on the top of the impact platform 103, and the counterweight grids 107 have a plurality of counterweight chambers 108 adapted to the storage chambers 105;

[0057] A positioning component provided on the sample grid 102, used to position the detection sample in the sample grid 102 when the sample grid 102 moves upward to a preset position;

[0058] A moving component disposed between the detection bracket 100 and the sample cell 102 for moving the position of the sample cell 102 up and down;

[0059] A detection component disposed between the detection bracket 100 and the impact platform 103 for moving the impact platform 103. The detection component can move the impact platform 103 upward to a preset position and then release the impact platform 103;

[0060] A counterweight component disposed between the storage cell 104 and the counterweight cell 107 for moving the position of the counterweight block 106;

[0061] Wherein, when the detection component moves the impact platform 103 upward to the preset position each time, the counterweight component can move one of the counterweight blocks 106 in the corresponding storage cavity 105 to the corresponding counterweight cavity 108, and the multiple counterweight blocks 106 move upward in sequence;

[0062] Wherein, when the moving component moves the sample cell 102 downward to the preset position, the counterweight component can synchronously move the counterweight blocks 106 in the multiple counterweight cavities 108 into the storage cavity 105;

[0063] By setting the sample cell 102, before the detection work, the operator can use the sampling device tool to take samples of the concrete road to be detected, and the sampled sample cores can be placed in the sample cell 102. During application, the operator can use the moving part to move the position of the sample cell 102 upward, so that the sample cores in the sample cell 102 protrude from the detection platform 101. During this process, the set positioning part can position and fix the sample cores, so as to ensure that the sample cores remain stable during the impact test and avoid test result errors caused by displacement or inclination. During detection, the detection part can move the position of the impact platform 103. When the impact platform 103 moves upward to reach the position of the storage cell 104, the detection part can release the impact platform 103, and the impact platform 103 can use its own gravity to drop and impact the sample cores protruding from the detection platform 101, so as to perform an impact test on the concrete sample cores. After one impact detection, the detection part then repeats the work, moving the position of the impact platform 103 upward. When the impact platform 103 moves upward with the counterweight cell 107 on it to a preset position, the set counterweight part can push one of the counterweight blocks 106 in the storage chamber 105 into the corresponding counterweight chamber 108 to increase the overall weight of the impact platform 103. Then the detection part releases the impact platform 103, and the impact platform 103 impacts the sample cores with the increased counterweight block 106. As the detection progresses, after each impact, the detection part continues to work, repeating moving the impact platform 103 upward and releasing it, and at the same time the counterweight part sequentially transfers the counterweight blocks 106 in the storage chamber 105 to the counterweight cell 107, so that the weight of the impact platform 103 gradually increases. In this way, the sample cores will experience multiple impacts from small to large to obtain the damage conditions under different impact intensities, so as to comprehensively evaluate the impact resistance of the concrete. Thus, a test method of gradually increasing the impact force is realized to evaluate the damage conditions of the concrete sample cores under different impact energies. Through this method, the impact resistance performance of the concrete material can be accurately analyzed, and different degrees of impacts that may be suffered during its actual use can be simulated. When the detection reaches the predetermined number of impacts or the sample cores show obvious damage, the detection process ends. Subsequently, the moving part moves the sample cell 102 downward to the initial position, and the set positioning part releases the positioning of the sample cores, facilitating the operator to take samples. At the same time, the counterweight part is activated to synchronously return the counterweight blocks 106 in the counterweight cell 107 to the storage chamber 105 to restore the initial state and prepare for the next test. In this application, by moving the counterweight blocks 106 upward to the counterweight chamber 108 in sequence from bottom to top, the weight of the impact platform 103 will increase during each impact, thus gradually increasing the impact force. This method can simulate the stress conditions of the concrete under impacts of different intensities, obtain the failure behaviors of the material under different stress levels, and further improve the accuracy of the test. Compared with the fixed impact force test, this increasing impact method can more comprehensively evaluate the impact resistance performance of the concrete.If the maximum impact force is directly applied, it may cause serious damage to the sample core in the first round of testing, making it impossible to analyze its tolerance under smaller impact forces. By gradually increasing the impact force, the whole process of concrete from slight damage to final failure can be observed, making the test results more valuable for reference. In addition, the heavy blocks are filled from bottom to top in sequence, which can keep the center of gravity of the impact platform 103 relatively stable, avoid the deviation of the impact direction caused by uneven counterweight, and improve the reliability of the test results. Compared with the prior art, after each impact test, by increasing the counterweight blocks 106 from bottom to top in sequence and gradually increasing the weight of the impact platform 103, the test under different impact energies can be realized, and this critical failure point can be effectively identified. Compared with the situation where the sample core may be prematurely damaged by applying the maximum impact force at one time, the present application can gradually increase the impact force, enabling the concrete sample core to experience the whole process from slight damage to final failure, so as to more accurately identify the critical failure point of the material.

[0064] As a further solution of the present invention, the moving member includes an oil cylinder 200 connected to the inner bottom surface of the detection bracket 100, and the telescopic shaft of the oil cylinder 200 is connected to the bottom of the sample cell 102;

[0065] By setting the oil cylinder 200 as the moving member, the smooth up-and-down movement of the sample cell 102 can be realized. The telescopic shaft of the oil cylinder 200 is connected to the bottom of the sample cell 102. When the oil cylinder 200 works, the lifting and lowering of the sample cell 102 can be accurately controlled, so as to adjust the position of the sample core. This design makes the movement of the sample cell 102 more flexible and stable.

[0066] As a further solution of the present invention, the positioning member includes a plurality of positioning ports 201 opened on the outer wall of the sample cell 102. A positioning block 202 is slidably connected in the positioning port 201. A spring a 203 is connected between the positioning block 202 and the positioning port 201. A push rod 204 is slidably connected to one side of the sample cell 102. A spring b 205 is connected between the push rod 204 and the sample cell 102. The bottom of the push rod 204 is rotatably connected to a connecting rod 206 that is rotatably connected to the positioning block 202;

[0067] By setting the above positioning components, the sample core can be effectively and accurately positioned and fixed. When the sample cell 102 moves upward to the preset position, the design of the ejector rod 204 ensures that it can accurately contact the bottom of the detection platform 101, thereby generating sufficient force to cause the ejector rod 204 to move downward. When the ejector rod 204 is connected to the positioning block 202 through the connecting rod 206, it will drive the movement of the positioning block 202, thereby pressing the sample core and fixing it firmly in the sample cell 102. In this way, the purpose of positioning and fixing the sample core when the sample cell 102 moves upward to the preset position can be achieved. Finally, when the subsequent sample cell 102 moves downward for reset, the set spring a 203 and spring b 205 release potential energy, which can reset the positioning block 202 and the ejector rod 204, release the fixation of the sample core, and facilitate the operator to take out the residual sample.

[0068] As a further solution of the present invention, the detection component includes a rotating shaft 300 rotatably connected to the detection bracket 100. A gear a 301 is connected to the rotating shaft 300. The gear a 301 is an incomplete gear. A rack a 302 is connected to the impact platform 103 and is adapted to the gear a 301. A motor 303 is connected to the detection bracket 100, and the drive shaft of the motor 303 is connected to the rotating shaft 300;

[0069] By setting the rotating shaft 300, the rotating shaft 300 is connected to the rack a 302 on the impact platform 103 through the gear a 301. The cooperation between the rack a 302 and the gear a 301 enables the impact platform 103 to move along a predetermined trajectory when the rotating shaft 300 rotates. The design of the gear a 301 as an incomplete gear allows the smooth (toothless) part of the gear a 301 to correspond to the rack a 302 when the rotating shaft 300 rotates to a preset angle. At this time, the rack a 302 and the impact platform 103 will move downward under their own action, thereby realizing the release of the impact platform 103 and using the impact platform 103 to perform an impact test on the sample core.

[0070] As a further solution of the present invention, the weight component includes a plurality of limiting sliding grooves 400 opened in the storage cavity 105. A limiting push block 401 is slidably connected in the limiting sliding grooves 400. A spring c 402 is connected between the limiting push block 401 and the storage cavity 105. A limiting socket 403 penetrating the storage grid 104 and the weight block 106 is opened at the top of the storage grid 104. A limiting frame 404 is slidably connected in the limiting socket 403;

[0071] By setting the spring C402, the initial state of the spring C402 is a compressed state with potential energy. The set limiting frame 404 can limit the position of the counterweight 106 through the cooperation with the limiting socket 403, so as to prevent it from moving unnecessarily under the force of the spring C402. Specifically, after the impact platform 103 is released to perform an impact test on the sample core once, the rotating shaft 300 rotates. Through the gear A301 and the rack A302, the impact platform 103 moves upward until it contacts the storage grid 104. At this time, the storage cavity 105 on the storage grid 104 is vertically aligned with the counterweight cavity 108 on the counterweight grid 107. At the same time, the limiting frame 404 moves upward and disengages from the limiting socket 403 on the bottommost counterweight 106. After the counterweight 106 is no longer restricted by the limiting frame 404, the spring C402 can release its potential energy, and the counterweight 106 can be pushed into the counterweight cavity 108 by the force of the spring C402. Subsequently, the impact platform 103 is released to perform an impact test on the sample core again. As the detection work progresses, each time the impact platform 103 moves upward to the position of the storage grid 104, the limiting frame 404 moves upward a preset distance. Thus, it can achieve the purpose of gradually releasing the counterweights 106 from bottom to top into the counterweight cavity 108 to increase the counterweight of the impact platform 103.

[0072] As a further solution of the present invention, the counterweight component further includes a connecting shaft 405 rotatably connected to the detection bracket 100. A gear B406 is provided on the connecting shaft 405. A traction shaft 407 is also rotatably connected to the detection bracket 100. A gear C408 adapted to the gear B406 is provided on the traction shaft 407. A traction rope 409 is wound around the traction shaft 407. One end of the traction rope 409 is connected to the limiting frame 404. A spring D410 is connected between the limiting frame 404 and the storage grid 104. A chain 411 is provided between the rotating shaft 300 and the connecting shaft 405;

[0073] By setting the gear C408, when an operator moves the sample cell 102 upward using the oil cylinder 200, the operator can move the position of the gear C408 so that the gear C408 meshes with the gear B406. During the process that the motor 303 drives the rotating shaft 300 to rotate and the impact platform 103 moves upward, the provided chain 411 can drive the connecting shaft 405 to rotate. The rotation of the connecting shaft 405 can drive the traction shaft 407 to rotate through the gear B406 and the gear C408, and then the traction rope 409 can be wound up to pull the position of the limiting frame 404. Specifically, during the process that the rotating shaft 300 continuously rotates and the impact platform 103 moves upward, the traction rope 409 is also pulling the limiting frame 404. When the rotating shaft 300 rotates a preset angle and the counterweight cell 107 on the impact platform 103 is parallel to the storage cell 104, the limiting frame 404 disengages from the lowermost counterweight block 106, enabling the counterweight block 106 to move under the action of the spring D410 and enter the counterweight cavity 108. As the impact platform 103 moves upward each time and reaches the preset position, under the action of the traction rope 409, the limiting frame 404 gradually releases the counterweight block 106, causing the counterweight block 106 to enter the counterweight cavity 108 successively from bottom to top. Whenever the limiting frame 404 disengages from a counterweight block 106, the spring C402 pushes the counterweight block 106 downward through its elastic force to accurately enter the counterweight cavity 108. This process can ensure that the counterweight block 106 moves smoothly in a predetermined order, gradually increasing the weight of the impact platform 103, thereby enhancing the impact force.

[0074] As a further solution of the present invention, the counterweight component further includes push grooves 500 formed on both sides of the counterweight block 106. A sliding rod 501 is slidably connected to the detection platform 101. A push rod 502 extending into the push groove 500 is slidably connected to the sliding rod 501. Connecting openings 503 for the movement of the push rod 502 are formed on the counterweight cell 107 and the storage cell 104. A lead screw 504 is rotatably connected inside the detection platform 101. The sliding rod 501 is threadedly connected to the lead screw 504. A gear D505 is connected to the lead screw 504. A rack B506 meshing with the gear D505 is connected to the outer wall of the sample cell 102;

[0075] By setting the push rod 502, in the initial state, the counterweight 106 is in the storage grid 104, and the push rod 502 is in the push slot 500 on the counterweight 106. When the sample grid 102 is moved upward by the oil cylinder 200, the provided rack b506 and gear d505 can make the lead screw 504 rotate, enabling the sliding rod 501 and the push rod 502 to move horizontally and enter the counterweight cavity 108 through the connection opening 503. When the impact platform 103 moves up and down subsequently, since the push rod 502 is in the connection opening 503, the force on the push rod 502 will also cause it to move vertically on the sliding rod 501 along with the counterweight grid 107. The purpose of this setting is to make the push rod 502 be on the counterweight grid 107 during the detection work. As the detection work progresses, when multiple counterweights 106 are gradually released into the counterweight cavity 108, the push slot 500 can cooperate with the push rod 502. After the detection work is completed, let the impact platform 103 stay at the bottom of the storage grid 104, and the storage grid 104 is aligned with the counterweight grid 107. When using the oil cylinder 200 to reset the sample grid 102 downward to release the positioning of the sample core, the rack c and the gear d505 can make the lead screw 504 rotate in the reverse direction, enabling the sliding rod 501 to return to its original position. During this process, the provided push rod 502 can move along with the sliding rod 501, and the position of the counterweight 106 can be moved through the push slot 500, allowing the counterweight 106 to be repositioned in the storage grid 104, thus realizing the recovery and reset of the counterweight 106 for the next detection. In subsequent detection work, the system can achieve multiple impact tests through the same counterweight release and recovery mechanism, each time increasing the counterweight according to the set sequence and automatically resetting after the test is completed, preparing for the next round of tests. This design not only improves the automation level of the detection device but also reduces the need for manual intervention, making the entire impact test process more efficient, accurate, and stable.

[0076] As a further solution of the present invention, a ratchet mechanism 507 is provided between the connecting shaft 405 and the detection bracket 100, and a spring e508 is provided between the gear c408 and the detection bracket 100;

[0077] By setting the ratchet mechanism 507, the ratchet mechanism 507 can limit the rotation direction of the connecting shaft 405. After the gear b406 on the connecting shaft 405 meshes with the gear c408, it can also limit the rotation direction of the traction shaft 407. During the detection work, the rotation of the traction shaft 407 can cause the spring e508 to twist and have potential energy. After the subsequent counterweight 106 returns to its original position, move the position of the gear b406 to make the gear b406 displace and disengage from the gear c408. At this time, the spring e508 can release the potential energy to release the traction rope 409. And the movement of the previous limit frame 404 can cause the spring d410 to stretch and generate potential energy. When the limit frame 404 is no longer pulled by the traction rope 409, the spring d410 releases the potential energy to make the limit frame 404 move downward and reset, and re-insert into the limit socket 403 on the counterweight 106, so as to achieve the purpose of re-positioning the counterweight 106 by the re-positioned limit frame 404.

[0078] As a further solution of the present invention, a pushing frame a509 is connected to the top of the sliding rod 501, a pushing frame b510 is connected to one side of the pushing frame a509, and the gear b406 is located between the pushing frame a509 and the pushing frame b510;

[0079] By setting the pushing frame, when the operator moves the sample grid 102 upward through the oil cylinder 200 to prepare for detection, the sliding rod 501 can move accordingly. The sliding rod 501 can make the pushing frame a509 move. When the pushing frame a509 moves to a preset position, it can contact the gear b406 and cause the gear b406 to displace and mesh with the gear c408. At this time, when the rotating shaft 300 rotates to make the impact platform 103 move up and down to detect the sample core, the traction shaft 407 can rotate accordingly to gradually release the counterweight 106. After the subsequent detection work is completed, the oil cylinder 200 resets the position of the sample grid 102, and the sliding rod 501, the pushing frame a509 and the pushing frame b510 move accordingly. At the same time, the pushing rod moves with the sliding rod 501 to make the counterweight 106 reset and move. When the counterweight 106 returns to its original position, the pushing frame b510 can push the gear b406 to move, and the gear b406 disengages from the gear c408. At this time, the gear c408 and the traction shaft 407 are no longer restricted by the ratchet mechanism 507 and can be reset and rotated by the force of the spring e508 to release the wound traction rope 409. The spring d410 releases the potential energy to make the limit frame 404 move downward and reset, and re-insert into the limit socket 403 on the counterweight 106, so as to achieve the purpose of re-positioning the counterweight 106 by the re-positioned limit frame 404. In this way, after a complete detection cycle is completed, the states of the counterweight 106, the limit frame 404 and the traction rope 409 can all return to the initial positions to prepare for the next detection.

[0080] As a further solution of the present invention, a plurality of rollers 511 are rotatably connected to the bottoms of the counterweight cavity 108 and the storage cavity 105;

[0081] By providing the rollers 511, the frictional force during the movement of the counterweight 106 between the storage cavity 105 and the counterweight cavity 108 can be effectively reduced, enabling smoother transfer.

[0082] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for concrete road construction, characterized in that: include: Detection bracket (100); A detection platform (101) is provided on the detection bracket (100), and a sample grid (102) is provided on the detection platform (101); An impact platform (103) provided on the detection bracket (100) is located on top of the detection platform (101); A storage compartment (104) is provided on the detection bracket (100) and fixed on the detection bracket (100), wherein the storage compartment (104) has a plurality of storage cavities (105), and a counterweight (106) is provided in each of the storage cavities (105); A plurality of counterweight grids (107) are provided on the top of the impact platform (103), wherein the counterweight grids (107) have a plurality of counterweight cavities (108) adapted to the storage cavity (105); A positioning component provided on the sample grid (102), used for positioning the test sample in the sample grid (102) when the sample grid (102) moves upward to a preset position; A moving component provided between the detection bracket (100) and the sample grid (102), used for moving the position of the sample grid (102) up and down; a detection component disposed between the detection bracket (100) and the impact platform (103), used for moving the impact platform (103), wherein the detection component is capable of releasing the impact platform (103) when the impact platform (103) is moved upward to a preset position; A counterweight component provided between the storage compartment (104) and the counterweight compartment (107), used for moving the position of the counterweight block (106); The detection component includes a rotating shaft (300) rotatably connected to the detection bracket (100), the rotating shaft (300) is connected to a gear a (301), the gear a (301) is an incomplete gear, the impact platform (103) is connected to a rack a (302) adapted to the gear a (301), the detection bracket (100) is connected to a motor (303), and the drive shaft of the motor (303) is connected to the rotating shaft (300); The counterweight component is capable of moving a counterweight block (106) in one of the storage chambers (105) into a corresponding counterweight chamber (108) each time the detection component moves the impact platform (103) upward to a preset position, and the plurality of counterweight blocks (106) move sequentially from bottom to top; The counterweight component comprises a plurality of limiting slide grooves (400) provided in the storage cavity (105), a limiting push block (401) is slidably connected in the limiting slide grooves (400), a spring c (402) is connected between the limiting push block (401) and the storage cavity (105), a limiting socket (403) is provided on the top of the storage compartment (104) and passes through the storage compartment (104) and the counterweight block (106), and a limiting frame (404) is slidably connected in the limiting socket (403). The counterweight component further comprises a connecting shaft (405) rotatably connected to the detection bracket (100), a gear b (406) being provided on the connecting shaft (405), a traction shaft (407) being rotatably connected to the detection bracket (100), a gear c (408) being provided on the traction shaft (407) being adapted to the gear b (406), a traction rope (409) being wound around the traction shaft (407), one end of the traction rope (409) being connected to the limiting frame (404), a spring d (410) being connected between the limiting frame (404) and the storage compartment (104), and a chain (411) being provided between the rotating shaft (300) and the connecting shaft (405).

2. A detection device for concrete road construction according to claim 1, characterized in that: The moving component comprises an oil cylinder (200) connected to the inner bottom surface of the detection bracket (100), and the telescopic shaft of the oil cylinder (200) is connected to the bottom of the sample grid (102).

3. A detection device for concrete road construction according to claim 1, characterized in that: The positioning component comprises a plurality of positioning openings (201) opened on the outer wall of the sample grid (102), a positioning block (202) is slidably connected in the positioning opening (201), a spring a (203) is connected between the positioning block (202) and the positioning opening (201), a push rod (204) is slidably connected to one side of the sample grid (102), a spring b (205) is connected between the push rod (204) and the sample grid (102), and the bottom of the push rod (204) is rotatably connected to a connecting rod (206) rotatably connected to the positioning block (202).

4. A detection device for concrete road construction according to claim 1, characterized in that: The counterweight component is capable of synchronously moving the counterweight blocks (106) in the plurality of counterweight cavities (108) into the storage cavity (105) when the moving component moves the sample grid (102) downward to a preset position; The counterweight component also includes a push groove (500) opened on both sides of the counterweight block (106), a sliding rod (501) is slidably connected to the detection platform (101), and a push rod (502) extending into the push groove (500) is slidably connected to the sliding rod (501), and a connecting opening (503) for the push rod (502) to move is opened on the counterweight grid (107) and the storage grid (104), and a lead screw (504) is rotatably connected in the detection platform (101), the sliding rod (501) is threadedly connected to the lead screw (504), and the lead screw (504) is connected to a gear d (505), and the outer wall of the sample grid (102) is connected to a rack b (506) meshing with the gear d (505).

5. A detection device for concrete road construction according to claim 1, characterized in that: A ratchet mechanism (507) is provided between the connecting shaft (405) and the detection bracket (100), and a spring e (508) is provided between the gear c (408) and the detection bracket (100).

6. A detection device for concrete road construction according to claim 4, characterized in that: The top of the sliding rod (501) is connected to a pushing frame a (509), one side of the pushing frame a (509) is connected to a pushing frame b (510), and the gear b (406) is located between the pushing frame a (509) and the pushing frame b (510).

7. The detection equipment for concrete road construction according to claim 1, characterized in that: The bottoms of the counterweight chamber (108) and the storage chamber (105) are both rotatably connected to a plurality of rollers (511).

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