A concrete strength detection device for construction engineering

Abstract

The present invention belongs to the field of concrete detection, and specifically relates to a concrete strength detection device for construction projects, including a device main body. A hydraulic rod is provided on the device main body, and a jacking mechanism is arranged inside the device main body. After the concrete test block is detected, the jacking mechanism can push the residues around it, so that the concrete residues can accumulate on the pushing block, facilitating subsequent cleaning. Four sets of feeding ports are opened on the device main body, and a pushing mechanism is arranged on the feeding ports. The pushing mechanism can push the pushing block to rotate, so that the residues on the pushing block can fall into the collection box through the feeding ports; through the structural design of the jacking mechanism, the function of pushing the concrete residues to the surrounding is realized, so that the concrete residues can accumulate on the pushing block, thus facilitating subsequent cleaning operations and reducing the labor intensity of operators.

Description

Technical Field

[0001] The present invention relates to the field of concrete detection, and specifically to a concrete strength detection device for construction projects. Background Art

[0002] In the field of construction projects, the strength of concrete test blocks is one of the key indicators for evaluating the structural safety and durability. To ensure that the strength of concrete test blocks meets the standards, strength detection devices are used to detect them.

[0003] According to the concrete precast component strength detection device proposed in the patent document CN202310964323.1, which includes a bracket, a hydraulic device is provided on the bracket, an upper lever device is provided on the hydraulic device, an upper pressure device is rotatably connected to the upper lever device, a lower lever device is rotatably connected to the upper lever device, and a lower pressure device is rotatably connected to the lower lever device. With the above structure, by combining a multi-lever structure and a hydraulic device, sufficient pressure can be generated, and it is detachable and foldable, which is convenient for carrying, transportation and storage. It can be detected on the construction site to avoid the trouble of transporting samples. The hydraulic device provides power to drive the upper lever device to move, so that the device can generate sufficient pressure with a smaller volume and weight to complete the detection of the compressive strength of concrete. The upper lever device and the lower lever device convert the power generated by the hydraulic device into the movement of the upper pressure device and the lower pressure device, and at the same time amplify the pressure multiple times.

[0004] However, in the detection device of the above technology, after the concrete test block is fractured, concrete residues will remain on the surface of the device. At this time, not only the detected concrete test block needs to be taken out, but also the concrete residues on the surface of the device need to be cleaned and collected for the next detection. It will take a lot of time during cleaning, which is not only cumbersome but also affects the continuity of the detection device's work, resulting in low detection efficiency. Therefore, a concrete strength detection device for construction projects is proposed to solve the above problems. Summary of the Invention

[0005] In order to solve the problem that in the detection device of the above technology, after the concrete test block is fractured, concrete residues will remain on the surface of the device. At this time, not only the detected concrete test block needs to be taken out, but also the concrete residues on the surface of the device need to be cleaned and collected for the next detection. It will take a lot of time during cleaning, which is not only cumbersome but also affects the continuity of the detection device's work, resulting in low detection efficiency, the present invention proposes a concrete strength detection device for construction projects.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A concrete strength detection device for construction engineering described in the present invention includes a device main body, a hydraulic rod is arranged on the device main body, a jacking mechanism is arranged inside the device main body, and the jacking mechanism can push the residues around the concrete test block after the detection is completed, so that the concrete residues can accumulate on the pushing block, facilitating subsequent cleaning. Four feeding ports are arranged on the device main body, and a pushing mechanism is arranged on the feeding port. The pushing mechanism can push the pushing block to rotate, so that the residues on the pushing block can fall into the collection box through the feeding port.

[0007] Preferably, the jacking mechanism includes four pushing plates. A sliding groove is opened at the bottom end of the pushing plate. A sliding block is slidably connected inside the sliding groove. The bottom end of the sliding block is rotatably connected to the top end of the jacking rod. The bottom end of the jacking rod is fixedly connected to the moving block. The moving block is sleeved on the fixed rod. The top end and the bottom end of the fixed rod are both rotatably connected to the inner wall of the cavity. The cavity is opened inside the support rod. A communication groove is opened on the support rod, and the communication groove is communicated with the inside of the cavity. The bottom end of the fixed rod is fixedly connected to the worm gear. The top end of the jacking rod penetrates through the top ends of the device main body and the support rod. The pushing plate is rotatably connected to the device main body.

[0008] Preferably, the pushing mechanism includes four pushing blocks. The pushing blocks are designed in an arc shape. The pushing blocks are located directly above the feeding ports. The bottom end of the pushing block is attached to the top end of the device main body. The bottom end of the pushing block is fixedly connected to the connecting rod. The bottom end of the connecting rod is fixedly connected to the vertical rod. The bottom end of the vertical rod is fixedly connected to the worm gear. Driving mechanisms are arranged on both sides of the worm gear for driving the worm gear to rotate. The connecting rod is designed in an L shape. One side of the connecting rod is attached to the top end of the support rod. The connecting rod is slidably connected inside the moving groove. The moving groove is opened on the collection box. The top end of the pushing block is attached to the bottom end of the fixed baffle. The fixed baffle is fixedly connected to the inner wall of the limiting ring. The limiting ring is fixedly connected to the device main body. The inner wall of the limiting ring is attached to the pushing block.

[0009] Preferably, the driving mechanism includes four toothed plates. The top ends of the toothed plates are fixedly connected to the hydraulic rod. The toothed plates penetrate through the top end of the device main body. Rotating shafts are rotatably connected to the left and right sides of the inner wall of the device main body. Fixed gears are fixedly connected to the front and rear sides of the rotating shafts. A worm is fixedly connected to the middle of the rotating shaft. The worm is meshed with the worm gear.

[0010] Preferably, a plurality of balls are rotatably connected to the bottom end of the worm gear. The bottom ends of the balls are abutted against the top end of the support disk. The support disk is fixedly connected to the support rod.

[0011] Preferably, a counterweight is fixedly connected to the side of the connecting rod away from the support rod. A pulley is fixedly connected to the bottom end of the connecting rod. The pulley is slidably connected to a chute. The chute is formed in a support plate. The support plate is fixedly connected to the inner wall of the device body.

[0012] Preferably, a plurality of sealing strips are fixedly connected to the inner wall of the movable groove. The sealing strips are made of rubber.

[0013] Preferably, the collection box is fixedly connected to the support rod. An inclined plate is fixedly connected to the bottom end of the inner wall of the collection box. The front end of the collection box is fixedly connected to a discharge port. The discharge port penetrates through the front end of the device body and communicates with the outside.

[0014] Preferably, a fixing column is sleeved on the position of the toothed plate near the top end. The bottom end of the fixing column is fixedly connected to the top end of the device body.

[0015] Preferably, one side of the pushing block is close to the pushing plate. An arc-shaped groove is formed in the side of the pushing block close to the pushing plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Through the structural design of the jacking mechanism, the present invention realizes the function of pushing the concrete residue to the surrounding, so that the concrete residue can accumulate on the pushing block, facilitating subsequent cleaning operations, reducing the labor intensity of operators, and solving the problem in the prior art detection device that after the concrete test block is fractured, the concrete residue will remain on the surface of the device. At this time, not only the tested concrete test block needs to be taken out, but also the concrete residue on the surface of the device needs to be cleaned and collected for the next test, which takes a lot of time during cleaning, is rather cumbersome and affects the continuity of the detection device, resulting in low detection efficiency.

[0018] 2. Through the structural design of the pushing mechanism, when the hydraulic rod is lifted upward, the four pushing blocks will rotate. The feeding port blocked by the pushing blocks will be exposed, and as the pushing blocks continue to rotate, the concrete residue accumulated on the pushing blocks will fall into the collection box through the feeding port, thus completing the collection of the concrete residue.

[0019] 3. Through the structural design of the driving mechanism, when the hydraulic rod is lifted upward, it will pull the four toothed plates to move upward, thereby driving the rotating shaft to rotate through the meshing of the toothed plates and the fixed gear, and then driving the worm gear to rotate, providing power for the rotation of the pushing blocks, avoiding the need to set an additional power source for driving, and reducing energy waste. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 Schematic diagram of the structure at the top of the device main body of the present invention;

[0023] Figure 3 Schematic diagram of the structure inside the device main body of the present invention;

[0024] Figure 4 Schematic diagram of the connection structure of the rotating shaft of the present invention;

[0025] Figure 5 Schematic diagram of the structure inside the collection box of the present invention;

[0026] Figure 6 Schematic diagram of the connection structure of the vertical rod of the present invention;

[0027] Figure 7 Schematic diagram of the structure of the pushing plate of the present invention;

[0028] Figure 8 Schematic diagram of the position of the swash plate of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the feed inlet of the present invention;

[0030] Figure 10 Schematic diagram of the connection structure of the pushing block of the present invention;

[0031] Figure 11 Schematic diagram of the structure of the fixed rod of the present invention.

[0032] In the figure: 1, device main body; 20, hydraulic rod; 21, feed inlet; 23, fixed column; 24, discharge port; 25, collection box; 26, movable groove; 27, sealing strip; 28, swash plate; 29, pushing block; 30, connecting rod; 31, counterweight; 32, pulley; 33, support plate; 34, sliding groove; 35, vertical rod; 36, worm gear; 37, fixed rod; 38, support disk; 39, communication groove; 40, support rod; 41, pushing plate; 42, sliding groove; 43, sliding block; 44, jacking rod; 45, fixed baffle; 46, limiting ring; 48, cavity; 49, moving block; 51, toothed plate; 52, rotating shaft; 53, fixed gear; 54, worm. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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 of 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. Embodiment

[0034] Please refer to Figure 1 - Figure 11 As shown, a concrete strength detection device for construction engineering includes a device main body 1. A hydraulic rod 20 is provided on the device main body 1. A jacking mechanism is provided inside the device main body 1. After the concrete test block is detected, the jacking mechanism can push the residues around it so that the concrete residues can accumulate on the pushing block 29, facilitating subsequent cleaning. Four feeding ports 21 are provided on the device main body 1. A pushing mechanism is provided on the feeding ports 21. The pushing mechanism can push the pushing block 29 to rotate so that the residues on the pushing block 29 can fall into the collection box 25 through the feeding ports 21;

[0035] Furthermore, the jacking mechanism includes four pushing plates 41. A sliding groove 42 is opened at the bottom end of the pushing plate 41. A sliding block 43 is slidably connected inside the sliding groove 42. The bottom end of the sliding block 43 is rotatably connected to the top end of the jacking rod 44. The bottom end of the jacking rod 44 is fixedly connected to the moving block 49. The moving block 49 is sleeved on the fixed rod 37. The top end and the bottom end of the fixed rod 37 are rotatably connected to the inner wall of the cavity 48. The cavity 48 is opened inside the support rod 40. A communication groove 39 is opened on the support rod 40. The communication groove 39 is communicated with the inside of the cavity 48. The bottom end of the fixed rod 37 is fixedly connected to the worm gear 36. The top end of the jacking rod 44 penetrates through the top ends of the device main body 1 and the support rod 40. The pushing plate 41 is rotatably connected to the device main body 1;

[0036] Through the structural design of the jacking mechanism, the function of pushing the concrete residue to the surrounding is realized, so that the concrete residue can be accumulated on the pushing block 29, facilitating subsequent cleaning operations and reducing the labor intensity of the operator. During operation, first place the concrete test block directly below the hydraulic rod 20, and then start the hydraulic rod 20 to apply pressure to the concrete test block until the concrete test block cracks. After the detection is completed, the hydraulic rod 20 is lifted to the maximum height. At this time, rotate the worm wheel 36. The fixed rod 37 fixedly connected to the middle of the worm wheel 36 will rotate inside the cavity 48. Four sets of communication grooves 39 are provided on the support rod 40 to ensure the normal rotation of the worm wheel 36. At the same time, the communication grooves 39 also limit the rotation angle of the worm wheel 36 to prevent the worm wheel 36 from rotating excessively. A spiral groove is provided at a position near the top of the fixed rod 37, and a spiral line is also provided on the inner wall of the moving block 49 sleeved on the fixed rod 37. Therefore, the rotation of the fixed rod 37 will cause the moving block 49 to move upward along the fixed rod 37. Four sets of jacking rods 44 are fixed on the moving block 49. When the jacking rods 44 move upward, they will jack up the pushing plate 41, causing the pushing plate 41 to rotate on the device main body 1. At this time, the concrete residue falling on the pushing plate 41 will slide onto the pushing block 29 under the action of gravity. Among them, the four sets of pushing plates 41 are close to the concrete test block. Therefore, when the concrete test block cracks, most of the concrete residue will fall on the pushing plates 41. Communication grooves corresponding to the jacking rods 44 are provided at the tops of the device main body 1 and the support rod 40 to ensure the normal movement of the jacking rods 44.

[0037] Furthermore, the pushing mechanism includes four sets of pushing blocks 29. The pushing blocks 29 are arc-shaped. The pushing blocks 29 are located directly above the feeding port 21. The bottom end of the pushing block 29 is in contact with the top end of the device main body 1. The bottom end of the pushing block 29 is fixedly connected to the connecting rod 30. The bottom end of the connecting rod 30 is fixedly connected to the vertical rod 35. The bottom end of the vertical rod 35 is fixedly connected to the worm wheel 36. Driving mechanisms are provided on both sides of the worm wheel 36 for driving the worm wheel 36 to rotate. The connecting rod 30 is L-shaped. One side of the connecting rod 30 is in contact with the top end of the support rod 40. The connecting rod 30 is slidably connected inside the movable groove 26. The movable groove 26 is opened on the collecting box 25. The top end of the pushing block 29 is in contact with the bottom end of the fixed baffle 45. The fixed baffle 45 is fixedly connected to the inner wall of the limiting ring 46. The limiting ring 46 is fixedly connected to the device main body 1. The inner wall of the limiting ring 46 is in contact with the pushing block 29;

[0038] Through the structural design of the pushing mechanism, when the hydraulic rod 20 is lifted upward, the four sets of pushing blocks 29 will rotate. The feeding port 21 blocked by the pushing blocks 29 will be exposed. As the pushing blocks 29 continue to rotate, the concrete residue accumulated on the pushing blocks 29 will fall into the collection box 25 through the feeding port 21, thus completing the collection of the concrete residue. During operation, when the worm gear 36 rotates, the four sets of vertical rods 35 fixed on the worm gear 36 will rotate synchronously. The top ends of the vertical rods 35 are connected to the pushing blocks 29 through connecting rods 30. The vertical rods 35 will drive the pushing blocks 29 to rotate. The four sets of pushing blocks 29 were originally directly above the feeding port 21 and blocked the feeding port 21. When the pushing blocks 29 rotate, the feeding port 21 will be gradually exposed. Since the top end of the pushing block 29 is in contact with the bottom end of the fixed baffle 45 and the fixed baffle 45 is fixed to the limiting ring 46, the fixed baffle 45 will remain fixed when the pushing block 29 rotates. Therefore, when the pushing block 29 rotates, the concrete residue will be scraped off by the fixed baffle 45 and fall into the interior of the collection box 25 through the feeding port 21, thus completing the collection. Since the bottom end of the pushing block 29 is in contact with the top end of the device body 1, the concrete residue between two adjacent sets of pushing blocks 29 will also be pushed by the pushing blocks 29 and fall from an adjacent feeding port 21. The top part of the support rod 40 is designed in a T shape to facilitate shielding the jacking rod 44 and prevent the concrete residue falling from the feeding port 21 from damaging the jacking rod 44.

[0039] Furthermore, the driving mechanism includes four sets of toothed plates 51. The top ends of the toothed plates 51 are fixedly connected to the hydraulic rod 20. The toothed plates 51 penetrate through the top end of the device body 1. Both the left and right sides of the inner wall of the device body 1 are rotatably connected with rotating shafts 52. Fixed gears 53 are fixedly connected to the front and rear sides of the rotating shafts 52. A worm 54 is fixedly connected to the middle of the rotating shaft 52. The worm 54 meshes with the worm gear 36.

[0040] Through the structural design of the driving mechanism, when the hydraulic rod 20 is lifted upward, it will pull the four sets of toothed plates 51 upward, thereby driving the rotation of the rotating shafts 52 through the meshing of the toothed plates 51 and the fixed gears 53, and then driving the rotation of the worm gear 36 to provide power for the rotation of the pushing blocks 29, avoiding the need to set up an additional power source for driving to reduce energy waste. During operation, after the hydraulic rod 20 completes the detection and lifts to the initial position, at this time, the hydraulic rod 20 continues to lift upward. The four sets of toothed plates 51 fixed on the hydraulic rod 20 will move upward. When the bottom end of the toothed plate 51 contacts the fixed gear 53, at this time, when the toothed plate 51 continues to move upward, it will drive the fixed gear 53 to rotate. The worm 54 fixed in the middle of the rotating shaft 52 will drive the worm gear 36 to rotate, thereby providing power for the rotation of the worm gear 36 through the upward lift of the hydraulic rod 20.

[0041] Further, a plurality of ball bearings are rotatably connected to the bottom end of the worm gear 36, and the bottom ends of the ball bearings are abutted against the top end of the support plate 38. The support plate 38 is fixedly connected to the support rod 40;

[0042] During operation, the bottom end of the worm gear 36 reduces the frictional resistance with the support plate 38 through a plurality of ball bearings, so as to facilitate the rotation of the worm gear 36 and ensure the stability of the worm gear 36 during rotation.

[0043] Further, a counterweight 31 is fixedly connected to the side of the connecting rod 30 away from the support rod 40. The bottom end of the connecting rod 30 is fixedly connected to a pulley 32. The pulley 32 is slidably connected to a chute 34. The chute 34 is opened on the support plate 33. The support plate 33 is fixedly connected to the inner wall of the device body 1;

[0044] During operation, the connecting rod 30 is designed in an L shape, and the counterweight 31 is fixed on the connecting rod 30, which can ensure the overall stability of the connecting rod 30 when the connecting rod 30 rotates, so as to reduce the shaking of the connecting rod 30. At the same time, a pulley 32 is also fixed below the connecting rod 30. By sliding the pulley 32 on the counterweight 31, the stable movement of the connecting rod 30 is further ensured.

[0045] Further, a plurality of sealing strips 27 are fixedly connected to the inner wall of the movable groove 26. The sealing strips 27 are made of rubber material;

[0046] During operation, a movable groove 26 is opened on the collection box 25. The movable groove 26 is used to ensure the normal rotation of the connecting rod 30 inside the collection box 25, so as to avoid abutting against the collection box 25. A plurality of sealing strips 27 are also fixed on the inner wall of the movable groove 26. The plurality of sealing strips 27 can reduce the concrete residue inside the collection box 25 from falling outside the collection box 25 through the movable groove 26.

[0047] Further, the collection box 25 is fixedly connected to the support rod 40. The bottom end of the inner wall of the collection box 25 is fixedly connected to an inclined plate 28. The front end of the collection box 25 is fixedly connected to a discharge port 24. The discharge port 24 penetrates through the front end of the device body 1 and communicates with the outside;

[0048] During operation, an inclined plate 28 is fixed inside the collection box 25. The inclined plate 28 can make the concrete residue accumulate near the discharge port 24, so as to smoothly slide out through the discharge port 24. Embodiment

[0049] Please refer to Figure 2 As shown, as another implementation manner of the present invention, a fixed column 23 is sleeved on the position of the toothed plate 51 close to the top end. The bottom end of the fixed column 23 is fixedly connected to the top end of the device body 1;

[0050] During operation, the fixing column 23 is fixed to the device main body 1 and sleeved on the toothed plate 51. The fixing column 23 can support and guide the movement of the toothed plate 51 to ensure the normal movement of the toothed plate 51.

[0051] One side of the pushing block 29 is close to the pushing plate 41, and an arc-shaped groove is formed on the side of the pushing block 29 close to the pushing plate 41.

[0052] During operation, one side of the pushing block 29 is close to the pushing plate 41, so that the concrete residue on the pushing plate 41 can smoothly slide onto the pushing block 29, and an arc-shaped groove is also formed on the pushing block 29 to ensure the normal rotation of the pushing plate 41.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A concrete strength detection device for construction engineering, comprising a device main body (1), and a hydraulic rod (20) is arranged on the device main body (1), and is characterized in that: A lifting mechanism is provided inside the main body (1) of the device. The lifting mechanism can push the residue around the concrete test block after the test is completed, so that the concrete residue can be accumulated on the pushing block (29) to facilitate subsequent cleaning. Four groups of feed ports (21) are provided on the main body (1). The feed ports (21) are provided with a pushing mechanism. The pushing mechanism can push the pushing block (29) to rotate, so that the residue on the pushing block (29) can fall into the collection box (25) through the feed ports (21). The lifting mechanism includes four groups of push plates (41), the bottom ends of the push plates (41) are provided with sliding grooves (42), the interior of the sliding grooves (42) is slidably connected with sliding blocks (43), the bottom ends of the sliding blocks (43) are rotatably connected to the top ends of the lifting rods (44), the bottom ends of the lifting rods (44) are fixedly connected to the moving blocks (49), the moving blocks (49) are sleeved on the fixed rods (37), and the top and bottom ends of the fixed rods (37) are both connected to the The inner wall of the cavity (48) is rotatably connected, the cavity (48) is opened inside the support rod (40), a connecting groove (39) is opened on the support rod (40), the connecting groove (39) is connected with the inside of the cavity (48), the bottom end of the fixing rod (37) is fixedly connected to the worm gear (36), the top end of the lifting rod (44) passes through the device body (1) and the top end of the support rod (40), and the pushing plate (41) is rotatably connected to the device body (1).

2. The concrete strength detection device for construction engineering according to claim 1, wherein: The pushing mechanism includes four groups of pushing blocks (29), the pushing blocks (29) are designed in an arc shape, the pushing blocks (29) are located just above the feed port (21), the bottom ends of the pushing blocks (29) are in contact with the top end of the device body (1), the bottom ends of the pushing blocks (29) are fixedly connected to the connecting rod (30), the bottom ends of the connecting rod (30) are fixedly connected to the vertical rod (35), the bottom ends of the vertical rod (35) are fixedly connected to the worm gear (36), and driving mechanisms are provided on both sides of the worm gear (36), and the driving mechanisms are used to drive the worm gear (36) ) rotates, the connecting rod (30) is designed in an L-shape, one side of the connecting rod (30) is fitted with the top end of the support rod (40), the connecting rod (30) is slidably connected to the inside of the movable groove (26), the movable groove (26) is opened on the collection box (25), the top end of the push block (29) is fitted with the bottom end of the fixed baffle (45), the fixed baffle (45) is fixedly connected to the inner wall of the limiting ring (46), the limiting ring (46) is fixedly connected to the device body (1), and the inner wall of the limiting ring (46) is fitted with the push block (29).

3. A concrete strength detection device for construction engineering according to claim 2, characterized in that: The driving mechanism includes four groups of toothed plates (51). The top end of the toothed plate (51) is fixedly connected to the hydraulic rod (20). The toothed plate (51) penetrates through the top end of the device main body (1). On the left and right sides of the inner wall of the device main body (1), there are rotatably connected rotating shafts (52). On the front and rear sides of the rotating shaft (52), there are fixedly connected fixed gears (53). In the middle of the rotating shaft (52), there is fixedly connected a worm (54), and the worm (54) meshes with the worm wheel (36).

4. A concrete strength detection device for construction engineering according to claim 1, characterized in that: At the bottom end of the worm wheel (36), there are rotatably connected multiple groups of balls, and the bottom ends of the balls are in contact with the top end of the support plate (38). The support plate (38) is fixedly connected to the support rod (40).

5. The concrete strength detection device for construction engineering according to claim 2, wherein: On the side of the connecting rod (30) away from the support rod (40), there is fixedly connected a counterweight block (31). At the bottom end of the connecting rod (30), there is fixedly connected a pulley (32). The pulley (32) is slidably connected to the chute (34). The chute (34) is opened on the support plate (33), and the support plate (33) is fixedly connected to the inner wall of the device main body (1).

6. The concrete strength detection device for construction engineering according to claim 2, characterized in that: On the inner wall of the movable groove (26), there are fixedly connected multiple groups of sealing strips (27). The sealing strips (27) are made of rubber material.

7. An apparatus for detecting the strength of concrete used in construction engineering according to claim 2, characterized in that: The collection box (25) is fixedly connected to the support rod (40). At the bottom end of the inner wall of the collection box (25), there is fixedly connected an inclined plate (28). The front end of the collection box (25) is fixedly connected to the discharge port (24), and the discharge port (24) penetrates through the front end of the device main body (1) and communicates with the outside.

8. The concrete strength detection device for construction engineering according to claim 3, wherein: At a position near the top end of the toothed plate (51), there is sleeved a fixed column (23). The bottom end of the fixed column (23) is fixedly connected to the top end of the device main body (1).

9. The concrete strength detection device for construction engineering according to claim 1, wherein: One side of the pushing block (29) is close to the pushing plate (41). On the side of the pushing block (29) close to the pushing plate (41), there is opened an arc-shaped groove.

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