Underground engineering concrete quality inspection device

Abstract

The invention relates to the technical field of concrete quality inspection, in particular to an underground engineering concrete quality inspection device which comprises a frame body, a rotating shaft is rotatably mounted in the middle of the top surface of the frame body, a detection box is arranged above the rotating shaft, and a test block forming box is arranged above the detection box; the detection assembly is arranged in the detection box, and the detection assembly is used for carrying out quality inspection operation on the concrete test block above the test block forming box; the partition assembly is arranged in the test block forming box, the partition assembly divides the interior of the test block forming box into two front test block cavities and a rear test block cavity, the rear test block cavity is arranged between the two front test block cavities, and the partition assembly is used for simulating the scene of new and old concrete pouring. Compared with the prior art, by arranging the partition assembly, a rough interface can be formed without additional scabbling treatment, and the combination quality of new concrete and old concrete is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete quality inspection, and in particular to a concrete quality inspection device for underground engineering. BACKGROUND

[0002] Underground engineering refers to underground civil engineering built for the development and utilization of underground space resources. It includes underground houses and underground structures, underground railways, highway tunnels, underground garages and basements. When building underground garages and basements, due to their large construction area and low temperature, a post-pouring strip is generally left during the pouring of concrete.

[0003] In the prior art, a concrete quality inspection device for underground engineering disclosed in Chinese patent document CN117589656B is provided. The device includes a slotting ring and a sealing rubber ring. The sealing rubber ring can seal the outer side of the bottom end of the detection area, preventing water pressure from escaping around the ring during permeability detection. The detection plate and the detection assembly can make the permeation in the vertical direction and the joint direction more intuitive, making the data more accurate and avoiding human observation from discovering water pressure penetration in time. The auxiliary support plate and the limiting assembly can facilitate pouring the post-pouring plate between the two pre-pouring plates, and quickly remove the auxiliary support plate after a period of maintenance, facilitating subsequent detection of the permeability of the connection mark between new and old concrete. However, the device only separates the new and old positions during pouring of new and old concrete. During on-site pouring of concrete, the contact surface of the old concrete should be chiseled. This method cannot directly pour concrete and requires manual chiseling to achieve the ideal and practical concrete simulation degree. Therefore, the present application discloses a concrete quality inspection device for underground engineering. SUMMARY

[0004] Therefore, the present application discloses a concrete quality inspection device for underground engineering.

[0005] To achieve the above purpose, the present application provides a concrete quality inspection device for underground engineering, which includes a frame body, a rotating shaft rotatably installed in the middle of the top surface of the frame body, a detection box arranged above the rotating shaft, and a test block forming box arranged above the detection box.

[0006] A detection assembly is arranged inside the detection box. The detection assembly is used for quality inspection of the concrete test block above the test block forming box.

[0007] A partition assembly is arranged in the interior of the test block forming box, which partitions the interior of the test block forming box into two front test block cavities and one rear test block cavity arranged between the two front test block cavities, and is used for simulating the scene of new and old cast concrete.

[0008] A micro-vibration assembly is arranged on both sides of the detection box, which is used for simulating the vibration operation during concrete pouring.

[0009] Preferably, one side of the frame body is provided with a fixing frame, a lead screw is rotatably installed on the fixing frame, two connecting plates are arranged on one side of the rotating shaft, the bottoms of the two connecting plates are commonly provided with a threaded sleeve which is threadedly connected with the lead screw, and one end of the lead screw is provided with a rotating handle.

[0010] Preferably, the detection assembly comprises a servo motor fixedly installed in the interior of the detection box, the output end of the servo motor is fixedly connected with a driving gear, a driven gear which is engaged with the driving gear is rotatably installed in the middle of the interior of the detection box, the top surface of the driven gear is provided with a plurality of first detection teeth, and the middle of the bottom of the test block forming box is circumferentially arranged with a plurality of second detection teeth which are matched with the first detection teeth, when the driven gear rotates, a plurality of the first detection teeth are driven to impact a plurality of the second detection teeth, thereby impacting the middle of the test block forming box, and the strength of the concrete at the new and old connection is detected.

[0011] Preferably, one side of the frame body is provided with a control box, and a foot switch is further arranged below the frame body, the foot switch is electrically connected with the control box, the control box is electrically connected with the servo motor, and the foot switch is used for controlling the servo motor to be turned on and off.

[0012] Preferably, the partition assembly comprises a fixed block fixedly installed on the two end faces of the test block forming box, the fixed block is arranged in a U shape, the two sides of the U-shaped face of the fixed block are provided with sliding rails, a sliding block is commonly slidably installed on the two sliding rails, one side of the sliding block is fixedly connected with a partition plate, and the two partition plates divide the test block forming box into two front test block cavities and one rear test block cavity.

[0013] Preferably, the two end faces of the test block forming box are provided with through grooves matched with the partition plates, and the through grooves are provided with sealing strips.

[0014] Preferably, one side of each of the two partition plates away from each other is provided with a plurality of inclined inclined reserved rods.

[0015] Preferably, the inside middle of the sliding block is provided with a containing cavity, a sliding block is slidably arranged in the containing cavity, one side of the sliding block is provided with a limiting rod, the inner side of one of the sliding rails is provided with a plurality of limiting teeth, one end of the limiting rod is matched with the tooth groove of the limiting teeth, the side of the sliding block away from the limiting rod is provided with a return spring, the other end of the return spring is fixedly connected with one side of the containing cavity, the middle of the sliding block is also provided with an inclined sliding groove, one side of the sliding block is slidably provided with a driving rod, and the driving rod penetrates into the inside of the containing cavity, and one end of the driving rod close to the containing cavity is provided with a sliding rod which slides in the inside of the inclined sliding groove.

[0016] Preferably, the micro-vibration tamping assembly comprises tooth plates fixedly arranged on both sides of the frame body, and follower plates rotationally arranged on both end faces of the detection box, the lower end of the follower plate is provided in a semicircular shape, and a plurality of teeth engaged with the tooth plates are arranged on the outer periphery, a plurality of mounting brackets are fixedly arranged on both sides of the inside of the detection box, a rotating rod is rotationally arranged on each of the mounting brackets on both sides, the rotating rod penetrates through one side of the detection box, and the two follower plates are rotationally arranged on both sides of the detection box through the two rotating rods, and a plurality of impact blocks are sleeved on the rotating rod.

[0017] Preferably, the plurality of impact blocks are arranged in a staggered manner, and the impact surfaces of the plurality of impact blocks are provided in a circular arc shape, and the impact blocks are used for staggered impact on the bottom surface of the detection box.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. The underground engineering concrete quality detection device, by setting the partition assembly, the test block forming box is divided into different cavities through the slidable partition plate, the pouring environment of new and old concrete is simulated, the inclined reserved rod on the partition plate naturally forms a cavity during the concrete filling process, and the cavity is enlarged under the action of the micro-vibration tamping, so that the diameter exceeds the reserved rod, thereby ensuring that the partition plate will not tear the concrete or be stuck when removed, the design can form a rough interface without additional chiseling treatment, improve the bonding quality of new and old concrete, and meanwhile, the cooperation of the limiting teeth and the limiting rod ensures that the partition plate is stably locked, the locking can be accurately released by pressing the driving rod, smooth sliding is realized, the return spring ensures that the partition plate is stably reset, and the safety and reliability are enhanced.

[0020] 2. The underground engineering concrete quality inspection device, through the micro-vibration stirring assembly, the meshing of the toothed plate and the follower plate, the follower plate drives the rotating rod and the impact block to stagger impact the bottom of the test block forming box, micro-vibration is formed, the concrete is ensured to be fully filled, the test block compactness is improved, air bubbles and voids are reduced, the concrete strength is improved, and meanwhile, the micro-vibration promotes the slight vibration of the inclined reserved rod on the partition plate, the reserved cavity is gradually expanded in the filling process, a new and old concrete connecting surface that is more fitted is formed, additional chiseling treatment is not needed, construction efficiency is improved, the assembly relies on the detection box rotation deflection to realize vibration transmission, additional power is not needed, energy consumption and system complexity are reduced, and the automation level is improved.

[0021] 3. The underground engineering concrete quality inspection device, through the detection assembly, the servo motor starts to work, drives the driving gear to rotate, and drives the driven gear to rotate synchronously through the gear transmission mechanism, the outer periphery of the driven gear is provided with a plurality of first detection teeth, in the rotating process, the first detection teeth will collide with the second detection teeth at the bottom of the test block forming box in turn, with the continuous rotation of the gear, the first detection teeth apply periodic impact force to the second detection teeth, so that the middle part of the test block forming box is stressed, thereby simulating the stress state of the new and old concrete junction, the operator observes whether cracks or structural loosening phenomena appear in the concrete during the detection process, and records the state change after impact, so as to evaluate the concrete bonding strength and durability, since the first detection teeth collide with the second detection teeth, impact force is generated on the new and old concrete interface area, this way can effectively simulate the actual stress environment of the concrete in engineering construction, ensure that the concrete will not crack due to poor bonding when stressed, and improve the authenticity of the structural durability evaluation. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0024] Figure 2 It is a partial structure schematic diagram of the present application;

[0025] Figure 3 It is a detection box internal structure schematic diagram of the present application;

[0026] Figure 4 It is a plane structure schematic diagram of the present application;

[0027] Figure 5 It is aFigure 2 Enlarged structural diagram at A in the middle;

[0028] Figure 6 Structural diagram of the partition assembly of the present application;

[0029] Figure 7 Structural diagram of the partition assembly of the present application;

[0030] Figure 8 Structural diagram of the partition assembly of the present application; Figure 7 Enlarged structural diagram at B in the middle.

[0031] Marked as:

[0032] 1, frame; 2, rotating shaft; 3, detection box; 4, test block forming box; 5, fixing frame; 6, screw rod; 7, connecting plate; 8, rotating handle; 9, control box; 10, foot switch; 11, servo motor; 12, driving gear; 13, driven gear; 14, first detection tooth; 15, second detection tooth; 16, toothed plate; 17, follower plate; 18, mounting frame; 19, rotating rod; 20, impact block; 21, fixed block; 22, slide rail; 23, sliding block; 24, partition plate; 25, accommodating cavity; 26, sliding block; 27, limiting rod; 28, limiting tooth; 29, return spring; 30, driving rod; 31, front test block cavity; 32, rear test block cavity; 33, inclined reserved rod. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with specific examples.

[0034] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0035] As Figures 1 to 8The underground engineering concrete quality inspection device is shown, including a frame body 1, a rotating shaft 2 is rotatably installed in the middle of the top surface of the frame body 1, a detection box 3 is arranged above the rotating shaft 2, and a test block forming box 4 is arranged above the detection box 3; a detection assembly is arranged in the detection box 3, and the detection assembly is used for quality inspection operation on the concrete test block above the test block forming box 4; a partition assembly is arranged in the test block forming box 4, and the partition assembly divides the inside of the test block forming box 4 into two front test block cavities 31 and one rear test block cavity 32, the rear test block cavity 32 is arranged between the two front test block cavities 31, and the partition assembly is used for simulating the scene of new and old cast concrete; a micro-vibration tamping assembly is arranged on both sides of the inside of the detection box 3, and the micro-vibration tamping assembly is used for simulating the vibration operation of the concrete pouring, wherein one side of the frame body 1 is provided with a fixing frame 5, a lead screw 6 is rotatably installed on the fixing frame 5, two connecting plates 7 are sleeved on one side of the rotating shaft 2, the bottoms of the two connecting plates 7 are commonly provided with a threaded sleeve which is threadedly connected with the lead screw 6, and one end of the lead screw 6 is provided with a rotating handle 8.

[0036] Before the detection operation starts, the inside of the test block forming box 4 is first divided into two front test block cavities 31 and one rear test block cavity 32 by the partition assembly, and new and old concrete materials are filled to simulate the construction environment, wherein the front test block cavities 31 are the pouring positions of the old concrete, and the rear test block cavity 32 is the pouring position of the new concrete, wherein when the front test block cavities 31 are filled and have a certain strength, the partition assembly is removed, at this time, the rear test block cavity 32 can be filled, at this time, the detection box 3 is in the initial position, the rotating handle 8 drives the lead screw 6 to rotate, thereby driving the detection box 3 and the test block forming box 4 to swing, so that the concrete in the box flows, simulating the fluidity and filling effect of the concrete in the actual construction process, at the same time of swinging, the micro-vibration tamping assembly works synchronously, tamps the concrete in the test block forming box 4, makes the concrete fully dense in the test block cavity, eliminates the excess air, improves the compressive strength and durability, after the tamping is completed, the test block enters the state of rest, so that the internal structure of the concrete gradually stabilizes, at this time, the detection assembly starts to work and detects the test block.

[0037] As Figure 2 , Figure 3As shown, the detection assembly includes a servo motor 11 fixedly installed inside the detection box 3, the output end of the servo motor 11 is fixedly connected with a driving gear 12, the inside middle part of the detection box 3 is rotatably installed with a driven gear 13 engaged with the driving gear 12, the top surface outer periphery of the driven gear 13 is provided with a plurality of first detection teeth 14, the middle part of the bottom of the test block forming box 4 is arranged with a plurality of second detection teeth 15 matched with the plurality of first detection teeth 14, when the driven gear 13 rotates, the plurality of first detection teeth 14 are driven to impact the plurality of second detection teeth 15, and the middle part of the test block forming box 4 is impacted, for strength quality inspection of the new and old connecting part of the concrete, one side of the frame body 1 is provided with a control box 9, and the lower part of the frame body 1 is further provided with a foot switch 10, the foot switch 10 is electrically connected with the control box 9, the control box 9 is electrically connected with the servo motor 11, and the foot switch 10 is used for controlling the servo motor 11 to open and close;

[0038] When the test block is prepared, the operator steps on the foot switch 10, the control box 9 sends a start signal to the servo motor 11, the servo motor 11 starts to work, drives the driving gear 12 to rotate, and drives the driven gear 13 to rotate synchronously through the gear transmission mechanism, the outer periphery of the driven gear 13 is provided with a plurality of first detection teeth 14, in the rotating process, these first detection teeth 14 will impact the second detection teeth 15 on the bottom of the test block forming box 4 in turn, with the continuous rotation of the gear, the first detection teeth 14 exert periodic impact force on the second detection teeth 15, so that the middle part of the test block forming box 4 is stressed, thereby simulating the stress state of the new and old concrete junction, the operator observes whether the concrete appears crack or structure loosening phenomenon in the detection process, and records the state change after impact, in order to evaluate the concrete bonding strength and durability, after the detection is completed, the operator releases the foot switch 10, the control box 9 sends a stop signal to the servo motor 11, the gear transmission mechanism stops working, and the whole detection process ends, finally, the operator analyzes the detection result, judges whether the test block quality meets the standard, and decides whether the concrete proportioning or construction process needs to be optimized, wherein the impact force is generated on the new and old concrete junction area in the process that the first detection teeth 14 impact the second detection teeth 15, this way can effectively simulate the actual stress environment of the concrete in engineering construction, ensure that the concrete will not crack due to poor bonding when stressed, and improve the authenticity of the structure durability evaluation.

[0039] As Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8As shown, the partition assembly comprises a fixed block 21 fixedly installed on the end faces of the test block forming box 4, the fixed block 21 is arranged in a U shape, the two sides of the U-shaped surface of the fixed block 21 are provided with sliding rails 22, and the two sliding rails 22 are jointly and slidably provided with sliding blocks 23. One side of the sliding block 23 is fixedly connected with a partition plate 24, and the two partition plates 24 divide the test block forming box 4 into two front test block cavities 31 and one rear test block cavity 32. The two end faces of the test block forming box 4 are provided with through grooves matched with the partition plates 24, and the through grooves are provided with sealing strips inside. The side of the two partition plates 24 away from each other is provided with a plurality of inclined inclined reserved rods 33;

[0040] In the concrete quality inspection operation, first, the partition assembly in the test block forming box 4 is divided into two front test block cavities 31 and one rear test block cavity 32, forming a simulated pouring area of new and old concrete, and the concrete is filled into the test block cavity in sequence. In the filling process, the inclined reserved rods 33 on the partition plate 24 will form a naturally reserved cavity in the concrete, and under the action of the micro-vibration tamping assembly, the concrete gradually flows and settles, so that the diameter of the cavity gradually expands, and finally exceeds the diameter of the reserved rod. After the concrete is preliminarily solidified, the operator starts the control device to release the partition assembly, so that the partition plate 24 smoothly slides away along the sliding rail 22. Due to the existence of the reserved cavity, the inclined reserved rod 33 can smoothly separate without causing concrete tearing or jamming. At the same time, the cavity left after removal naturally exists on the concrete contact surface, thereby avoiding the cumbersome steps of traditional chiseling, improving the bonding quality of the new and old concrete connection surface, and the new and old concrete connection surface usually needs to be chiseled to remove the smooth surface layer, increase the interface roughness, and thus improve the bonding strength of the new and old concrete. However, the device forms a reserved cavity naturally during the concrete filling process through the inclined reserved rod 33, and gradually expands the diameter of the cavity through the action of the micro-vibration tamping assembly, which is greater than the diameter of the reserved rod. In this way, when the partition assembly is released, the reserved rod can smoothly slide out, and the left cavity directly forms a rough interface without additional chiseling;

[0041] The inside of the sliding block 23 is provided with a receiving cavity 25, the inside of the receiving cavity 25 is slidably provided with a sliding block 26, one side of the sliding block 26 is provided with a limiting rod 27, the inside of one of the sliding rails 22 is provided with a plurality of limiting teeth 28, one end of the limiting rod 27 is matched with the tooth groove of the limiting teeth 28, the side of the sliding block 26 away from the limiting rod 27 is provided with a return spring 29, the other end of the return spring 29 is fixedly connected with one side of the receiving cavity 25, and the middle part of the sliding block 26 is also provided with an inclined sliding groove. One side of the sliding block 23 is slidably provided with a driving rod 30, and the driving rod 30 penetrates into the inside of the receiving cavity 25. One end of the driving rod 30 close to the receiving cavity 25 is provided with a sliding rod sliding in the inside of the inclined sliding groove;

[0042] When the partition plate needs to be moved, the operator presses the driving rod 30, the inner sliding rod of the driving rod 30 slides along the inclined sliding groove of the sliding block 26, pushes the sliding block 26 to move in the opposite direction of the limiting tooth 28, extrudes the reset spring 29, makes the limiting rod 27 disengage from the tooth groove of the limiting tooth 28, and releases the locking of the sliding block 23, at this time, the sliding block 23 and the fixed partition plate can smoothly slide along the sliding rail 22, realize the re-adjustment of the test block cavity or release the partition, when the driving rod 30 is released, the reset spring 29 pushes the sliding block 26 back to the original position, makes the limiting rod 27 re-engage in the tooth groove of the limiting tooth 28, re-locks the partition plate, ensures the stability and safety, the cooperation of the limiting tooth 28 and the limiting rod 27 ensures that the partition plate 24 is stably locked when needed, and through the pressing operation of the driving rod 30, the limiting can be accurately released, smooth sliding is realized, the reset spring 29 ensures that the sliding block 26 can quickly return to the original position after the driving rod 30 is released, the limiting rod 27 re-engage in the limiting tooth 28, avoids accidental sliding of the partition plate caused by misoperation, and enhances the safety and stability.

[0043] As shown in Figures 2 to 5 The micro-vibration tamping assembly comprises tooth plates 16 fixedly installed on both sides of the frame body 1 and follow-up plates 17 rotatably installed on the two end faces of the detection box 3. The lower end of each follow-up plate 17 is provided in a semicircular shape, and a plurality of teeth meshing with the tooth plates 16 are arranged on the outer periphery. A plurality of mounting frames 18 are fixedly installed on the inner sides of the bottom of the detection box 3. A rotating rod 19 is rotatably installed on each mounting frame 18. The rotating rod 19 penetrates through one side of the detection box 3, and the two follow-up plates 17 are rotatably installed on the two sides of the detection box 3 through the two rotating rods 19. A plurality of impact blocks 20 are sleeved on the rotating rod 19. The impact blocks 20 are arranged in a staggered manner, and the impact surfaces of the impact blocks 20 are arranged in a circular arc shape. The impact blocks 20 are used for staggered impact on the bottom surface of the detection box 3.

[0044] Through the meshing of the follow-up plate 17 and the toothed plate 16, the rotation of the follow-up plate 17 is caused by the rotation deflection of the detection box 3, and then the rotation of the rotating rod 19 and the impact block 20 is caused, and the staggered impact is applied to the bottom of the detection box 3, so that the whole test block forming box 4 is vibrated, the concrete is more fully filled, the density of the test block is improved, the bubbles and voids are reduced, and the strength of the concrete is improved, at the same time, the partition plate 24 in the test block forming box 4 and the inclined reserved rod 33 thereon are also vibrated, so that the reserved cavity is gradually expanded during the concrete filling process, a more suitable new and old concrete connecting surface is formed, subsequent chiseling treatment is avoided, construction efficiency and quality are improved, due to the staggered impact of the impact block 20, the test block forming box 4 is locally slightly vibrated, so as to drive the inclined reserved rod 33 on the partition plate 24 to vibrate slightly, the slight vibration can promote the flowability of the concrete around the reserved cavity, the cavity is gradually expanded and adapted to the shape of the reserved rod, the reserved rod is more smooth when removed, and a smooth and more cohesive new and old concrete connecting surface is formed, so that subsequent chiseling treatment is avoided, construction efficiency is improved, and the operation of the slight vibration assembly does not need additional power driving, and only relies on the rotation deflection of the detection box 3 to realize vibration transmission, reduces the energy consumption and complexity of the equipment, and improves the automation level of the system.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features in different embodiments can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0046] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-described embodiments or technical features of different embodiments can be combined, steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity, and all such changes are intended to be within the scope of the present application.

Claims

1. An underground engineering concrete quality inspection device, characterized in that, Include: The frame (1), the middle part of the top surface of the frame (1) is rotatably installed with a rotating shaft (2), the upper part of the rotating shaft (2) is provided with a detection box (3), the upper part of the detection box (3) is provided with a test block forming box (4); The detection assembly is arranged in the detection box (3), and the detection assembly is used for quality inspection operation of the concrete test block above the test block forming box (4); The partition assembly is arranged in the test block forming box (4), the inside of the test block forming box (4) is partitioned into two front test block cavities (31) and one rear test block cavity (32), the rear test block cavity (32) is arranged between the two front test block cavities (31), and the partition assembly is used for simulating the scene of new and old cast concrete; The micro-vibration tamping assembly is arranged on both sides of the detection box (3), and the micro-vibration tamping assembly is used for simulating the vibration operation of the concrete pouring.

2. The underground engineering concrete quality inspection device according to claim 1, characterized in that, One side of the frame (1) is provided with a fixing frame (5), a lead screw (6) is rotatably installed on the fixing frame (5), two connecting plates (7) are sleeved on one side of the rotating shaft (2), the bottoms of the two connecting plates (7) are commonly provided with a threaded sleeve which is threadedly connected with the lead screw (6), and one end of the lead screw (6) is provided with a rotating handle (8).

3. The underground engineering concrete quality inspection device according to claim 1, characterized in that, The detection assembly includes a servo motor (11) fixedly installed in the detection box (3), the output end of the servo motor (11) is fixedly connected with a driving gear (12), the inside of the detection box (3) is rotatably installed with a driven gear (13) engaged with the driving gear (12), the top surface of the driven gear (13) is provided with a plurality of first detection teeth (14), and the bottom of the test block forming box (4) is circumferentially arranged with a plurality of second detection teeth (15) matched with the plurality of first detection teeth (14). When the driven gear (13) rotates, a plurality of first detection teeth (14) are driven to impact a plurality of second detection teeth (15), impact is generated on the middle part of the test block forming box (4), and the strength of the concrete at the new and old connection is detected.

4. The underground engineering concrete quality inspection device according to claim 3, characterized in that, One side of the frame (1) is provided with a control box (9), and the lower part of the frame (1) is further provided with a foot switch (10), the foot switch (10) is electrically connected with the control box (9), the control box (9) is electrically connected with the servo motor (11), and the foot switch (10) is used for controlling the servo motor (11) to be turned on and turned off.

5. The underground engineering concrete quality inspection device according to claim 1, characterized in that, The partition assembly comprises fixed blocks (21) fixedly installed on the two end faces of the test block forming box (4), the fixed blocks (21) are arranged in a U shape, sliding rails (22) are arranged on the two sides of the U-shaped face of the fixed blocks (21), sliding blocks (23) are jointly and slidingly installed on the two sliding rails (22), and the sliding blocks (23) are fixedly connected with partition plates (24) on one side.

6. The underground engineering concrete quality inspection device according to claim 5, characterized in that, The two end faces of the test block forming box (4) are provided with through grooves matched with the partition plates (24), and sealing strips are arranged in the through grooves.

7. The underground engineering concrete quality inspection device according to claim 6, characterized in that, The two partition plates (24) are provided with a plurality of inclined reserved rods (33) on the sides away from each other.

8. The underground engineering concrete quality inspection device according to claim 7, characterized in that, An accommodating cavity (25) is formed in the middle of the sliding block (23), a sliding block (26) is slidingly installed in the accommodating cavity (25), a limiting rod (27) is arranged on one side of the sliding block (26), a plurality of limiting teeth (28) are arranged on the inner side of one of the sliding rails (22), one end of the limiting rod (27) is matched with the tooth groove of the limiting teeth (28), a reset spring (29) is arranged on the side of the sliding block (26) away from the limiting rod (27), the other end of the reset spring (29) is fixedly connected with one side of the accommodating cavity (25), an inclined sliding groove is further formed in the middle of the sliding block (26), a driving rod (30) is slidingly installed on one side of the sliding block (23) and penetrates into the accommodating cavity (25), and the end of the driving rod (30) close to the accommodating cavity (25) is provided with a sliding rod sliding in the inclined sliding groove.

9. The underground engineering concrete quality inspection device according to claim 1, characterized in that, The micro-vibration tamping assembly comprises toothed plates (16) fixedly installed on the two sides of the frame body (1) and follow-up plates (17) rotationally installed on the two end faces of the detection box (3), the lower end of the follow-up plate (17) is arranged in a semicircle, a plurality of teeth meshing with the toothed plates (16) are formed in the outer periphery, a plurality of mounting frames (18) are fixedly installed on the inner sides and bottoms of the detection box (3), a rotating rod (19) is rotationally installed on each of the mounting frames (18), the rotating rod (19) penetrates through one side of the detection box (3), the two follow-up plates (17) are rotationally installed on the two sides of the detection box (3) through the two rotating rods (19), and a plurality of impact blocks (20) are sleeved on the rotating rod (19).

10. The underground engineering concrete quality inspection device according to claim 9, characterized in that, The plurality of impact blocks (20) are arranged in a staggered manner, and the impact surfaces of the plurality of impact blocks (20) are arranged in a circular arc shape, and the impact blocks (20) are used for staggered impact on the bottom surface of the detection box (3).

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