A strength testing device for preparing concrete with mineral solid waste admixtures

Abstract

The present invention provides a strength detection device for preparing concrete with mineral solid waste admixtures, which relates to the technical field of concrete detection, and comprises a base, four groups of supports are fixedly connected to the side wall of the base, four support columns are fixedly connected to the upper surface of the base, an upper mounting plate is fixedly connected to the upper surface of the support column, a hydraulic cylinder is installed on the upper surface of the upper mounting plate, an output rod is installed at the lower end of the hydraulic cylinder, an experimental pressure head is installed at the lower end of the output rod, an experimental box is fixedly connected to the upper surface of the base, a clamping assembly is arranged in the experimental box, and two protective covers are connected to the upper end of the experimental box along the left and right directions. When conducting a concrete compressive strength test, a concrete test block is placed in the test box, and the automatic centering positioning of the concrete sample is realized by the synchronous movement of the four groups of clamping jaw assemblies toward the center, thereby ensuring the stable installation of the concrete sample and the accuracy of the installation position, ensuring the accuracy of the loading position, and improving the accuracy of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, and in particular to a strength detection device for preparing concrete with mineral solid waste admixtures. Background Art

[0002] Mineral solid waste admixture concrete is a building material that uses mineral solid waste as concrete raw materials. During the preparation process of this type of concrete, a certain proportion of mineral solid waste is usually mixed into the concrete to replace part of the traditional cement or aggregate. This practice can effectively utilize some solid wastes, thereby reducing the burden on resources and the environment of the building materials industry itself and other industrial industries; and mineral soil admixtures have lubricating or water-retaining effects, or volcanic ash activity, or micro-aggregate effects that fill pores, which significantly improve the working performance, mechanical properties, anti-corrosion and durability of cement, mortar, and concrete. It has become an indispensable component material in cement, mortar and concrete. In order to ensure that the mineral solid waste admixture concrete reaches the strength level required by the design and meets the requirements of engineering construction and use, it is necessary to use strength testing equipment to conduct compressive strength testing on the mineral solid waste admixture concrete sample blocks.

[0003] In the existing concrete strength testing device, the position of the concrete specimen is placed manually after visual judgment, so there will be a large error in the accuracy of the compressed position. Inaccurate alignment will cause deviations in the force on the concrete specimen, ultimately leading to errors in the test results. Summary of the invention

[0004] The present invention provides a strength detection device for preparing concrete with mineral solid waste admixtures, which is used to solve the defect that the position of concrete specimens in the prior art is placed manually after being judged by the naked eye, so the accuracy of the compressed position will have a large error, and if it is not accurately aligned, the force on the concrete specimen will deviate, which will eventually lead to errors in the detection results.

[0005] On the one hand, the present invention provides a strength detection device for preparing concrete with mineral solid waste admixtures, comprising a base, a plurality of groups of supports fixedly connected to the side wall of the base, a plurality of support columns fixedly connected to the upper surface of the base, an upper mounting plate fixedly connected to the upper surfaces of the plurality of support columns, a hydraulic cylinder mounted on the upper surface of the upper mounting plate, an output rod mounted at the lower end of the hydraulic cylinder, an experimental pressure head mounted at the lower end of the output rod, a test box fixedly connected to the upper surface of the base, a clamping assembly arranged in the test box, and two protective covers slidably connected to the upper end of the test box along the left and right directions;

[0006] A support platform is provided on the bottom surface of the test box, a working cavity is provided inside the support platform, two groups of vertically arranged electric telescopic rods 2 are symmetrically provided on the left and right sides of the support platform, four vertically arranged positioning rods are also fixedly connected to the bottom surface of the test box, the test plate is slidably connected to the positioning rods along the up and down directions, two positioning holes corresponding to the electric telescopic rods 2 are provided on the lower surface of the test plate, and the clamping assembly is arranged in the working cavity;

[0007] The upper surface of the support table is provided with a receiving groove, and the clamping assembly includes a conical block, the lower surface of the conical block is fixedly connected with a first step shaft, and the lower end of the first step shaft is fixedly connected with a second step shaft; the bottom surface of the working cavity is provided with a first step groove, and the lower end of the first step groove is provided with a second step groove, and a spring 2 is fixedly connected between the upper surface of the first step groove and the lower surface of the first step shaft, and the upper surface of the conical block is fixedly connected with a connecting rod, and the connecting rod slides in the up and down directions and passes through the bottom surface of the receiving groove, and the upper end of the connecting rod is fixedly connected with a supporting plate, A spring three is fixedly connected between the lower surface of the support plate and the bottom surface of the accommodating groove. A group of clamping claw assemblies are respectively arranged around the front, back, left and right sides of the conical block. The clamping claw assembly is in contact with the conical surface of the conical block. The vertical distance between the upper end of the conical surface and the vertical axis of the conical block is smaller than the vertical distance between the lower end of the conical surface and the vertical axis of the conical block. Four groups of clamping grooves one are arranged on the support platform, and four groups of clamping grooves two corresponding to the clamping grooves one by one are arranged on the experimental plate. The clamping claw assembly extends from the clamping groove one and the clamping groove two.

[0008] Preferably, the clamping jaw assembly includes a mounting rod, which is fixedly connected to the inner wall of the working chamber in a horizontal direction, and a clamping rod is slidably connected to the mounting rod along the length direction of the mounting rod, and the clamping rod extends from clamping groove 1 and clamping groove 2. A plurality of clamping plates are arranged at intervals in the upper and lower parts of the clamping rod, and a rotating wheel is rotatably connected to the lower end of the clamping rod, and the rotating wheel contacts the conical surface of the conical block, and a plurality of springs 4 are fixedly connected between the clamping rod and the inner wall of the working chamber.

[0009] Preferably, the support includes a buffer box, the lower end of the buffer box is provided with an opening, the top surface of the buffer box is fixedly connected to a vertically arranged electric telescopic rod, the lower end of the electric telescopic rod is fixedly connected to a lifting plate, and the lower surface of the lifting plate is connected to a buffer assembly.

[0010] Preferably, the buffer assembly includes a connecting frame, a damping rod and a supporting base plate, the connecting frame is fixedly connected to the lower surface of the lifting plate, two connecting seats are symmetrically arranged on the lower surface of the connecting frame, a damping rod is hinged on each of the two connecting seats, the other end of the damping rod is hinged on the sliding block, and two sliding grooves along the left and right directions are symmetrically arranged on the upper surface of the supporting base plate, a center rod along the left and right directions is fixedly connected in the sliding groove, the sliding block is slidably connected to the center rod along the left and right directions, and a spring is fixedly connected between the sliding block and the side wall of the sliding groove.

[0011] Preferably, T-shaped slide rails are respectively provided on the upper surfaces of the front and rear side walls of the test box, a center block is provided in the middle of the T-shaped slide rail, and T-shaped blocks are fixedly connected to the lower surfaces of the front and rear side walls of the protective cover. The T-shaped blocks slide in the left and right directions in the T-shaped slide rails, and working grooves are provided on the top surfaces of the ends of the two protective covers that are close to each other. Each protective cover slides on the upper end of the test box through a group of correspondingly arranged drive components.

[0012] Preferably, the driving assembly includes a closing assembly and an opening assembly, the closing assembly is used to drive the protective cover to close automatically, and the opening assembly is used to drive the two protective covers to move away from each other.

[0013] Preferably, two left-right symmetrical rebound chambers are arranged inside the center block, and the closing component includes a rebound shaft installed in the rebound chamber, a connecting rope 1 is wound around the rebound shaft, the fixed end of the connecting rope 1 is fixedly connected to the rebound shaft, and the free end of the connecting rope 1 is fixedly connected to the side wall of the T-shaped block.

[0014] Preferably, a driving groove along the length direction of the T-shaped block is provided on the lower surface of the T-shaped block, and two transmission chambers are symmetrically provided inside the test box. The transmission chamber is connected to the working chamber through a connecting groove, and two groups of opening components are respectively arranged in the two transmission chambers. The opening components include a fixed shaft, a steering shaft, two connecting ropes 2 and a control frame. The control frame is U-shaped, and the control frame is fixedly connected to the side wall of the conical block. The other end of the control frame extends into the transmission chamber through the connecting groove. A fixed shaft and a steering shaft are fixedly connected to the inner wall of each transmission chamber. One end of the two connecting ropes 2 is fixedly connected to the fixed shaft, and the other end of the connecting rope 2 bypasses the top of the control frame and then bypasses the bottom of the steering shaft to extend into the transmission channel. After passing through the transmission channel, the two connecting ropes 2 respectively extend into the driving grooves of the T-shaped block on the front and rear sides of the protective cover, and are fixedly connected to the end face of the driving groove away from the output rod side.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] When conducting a concrete compressive strength test, the four sets of jaw assemblies move synchronously toward the center, which enables automatic centering of the concrete sample, ensures stable installation of the concrete sample and accurate installation position, ensures the accuracy of the loading position, and improves the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the support structure of the present invention;

[0020] Figure 3 yes Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the structure of the experimental box of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the rear side wall of the test box of the present invention;

[0023] Figure 6 yes Figure 5 The enlarged schematic diagram of point B in the middle;

[0024] Figure 7 yes Figure 4 Schematic diagram of the cross section at CC.

[0025] Reference numerals:

[0026] 1. Base; 2. Support; 3. Support column; 4. Upper mounting plate; 5. Hydraulic cylinder; 6. Output rod; 7. Experimental pressure head; 8. Test box; 9. Protective cover; 10. Buffer box; 11. Electric telescopic rod 1; 12. Lifting plate; 13. Connecting frame; 14. Damping rod; 15. Support bottom plate; 16. Connecting seat; 17. Sliding block; 18. Sliding groove; 19. Center rod; 20. Spring 1; 21. Support table; 22. Working chamber; 23. Electric telescopic rod 2; 24. Positioning rod; 25. Experimental plate; 26. Positioning hole; 27. Accommodating groove; 28. Conical block; 281. Conical surface; 291. First step shaft; 292. Second step shaft; 30 1. First step groove; 302. Second step groove; 31. Spring 2; 32. Connecting rod; 33. Support plate; 34. Spring 3; 35. Clamping groove 1; 36. Clamping groove 2; 37. Mounting rod; 38. Clamping rod; 39. Clamping plate; 40. Rotating wheel; 41. Spring 4; 42. T-shaped slide rail; 43. Center block; 44. T-shaped block; 45. Working groove; 46. Rebound chamber; 47. Rebound shaft; 48. Connecting rope 1; 49. Driving groove; 50. Transmission chamber; 51. Connecting groove; 52. Fixed shaft; 53. Steering shaft; 54. Connecting rope 2; 55. Control frame; 56. Transmission channel; 561. Vertical channel; 562. Horizontal channel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] Example 1

[0030] The embodiment of the present invention provides a strength detection device for preparing concrete with mineral solid waste admixtures, comprising a base 1, a plurality of groups of supports 2 are fixedly connected to the side wall of the base 1, a plurality of support columns 3 are fixedly connected to the upper surface of the base 1, an upper mounting plate 4 is fixedly connected to the upper surface of the plurality of support columns 3, a hydraulic cylinder 5 is installed on the upper surface of the upper mounting plate 4, an output rod 6 is installed at the lower end of the hydraulic cylinder 5, an experimental pressure head 7 is installed at the lower end of the output rod 6, a test box 8 is fixedly connected to the upper surface of the base 1, a clamping assembly is arranged in the test box 8, and two protective covers 9 are slidably connected to the upper end of the test box 8 along the left and right directions;

[0031] A support platform 21 is provided on the inner bottom surface of the test box 8, a working chamber 22 is provided inside the support platform 21, two groups of vertically arranged electric telescopic rods 23 are symmetrically provided on the left and right sides of the support platform 21, four vertically arranged positioning rods 24 are also fixedly connected to the inner bottom surface of the test box 8, a test plate 25 is slidably connected to the positioning rods 24 along the up and down directions, two positioning holes 26 corresponding to the electric telescopic rods 23 are provided on the lower surface of the test plate 25, and a clamping assembly is provided in the working chamber 22;

[0032] The upper surface of the support table 21 is provided with a receiving groove 27, and the clamping assembly includes a conical block 28, and the lower surface of the conical block 28 is fixedly connected with a first stepped shaft 291, and the lower end of the first stepped shaft 291 is fixedly connected with a second stepped shaft 292; the bottom surface of the working chamber 22 is provided with a first stepped groove 301, and the lower end of the first stepped groove 301 is provided with a second stepped groove 302, and a spring 21 is fixedly connected between the upper surface of the first stepped groove 301 and the lower surface of the first stepped shaft 291, and the upper surface of the conical block 28 is fixedly connected with a connecting rod 32, and the connecting rod 32 slides in the up and down direction through the bottom surface of the receiving groove 27, and the upper end of the connecting rod 32 is fixedly connected with A support plate 33 is provided, and a spring three 34 is fixedly connected between the lower surface of the support plate 33 and the inner bottom surface of the accommodating groove 27. A group of clamping jaw assemblies are respectively arranged around the front, back, left and right sides of the conical block 28. The clamping jaw assembly is in contact with the conical surface 281 of the conical block 28. The vertical distance between the upper end of the conical surface 281 and the vertical axis of the conical block 28 is smaller than the vertical distance between the lower end of the conical surface 281 and the vertical axis of the conical block 28. Four groups of clamping grooves 1 35 are arranged on the support table 21, and four groups of clamping grooves 2 36 corresponding to the clamping grooves 1 35 are arranged on the experimental plate 25. The clamping jaw assemblies extend from the clamping grooves 1 35 and 2 36.

[0033] Preferably, the clamping jaw assembly includes a mounting rod 37, which is fixedly connected to the inner wall of the working chamber 22 in the horizontal direction, and a clamping rod 38 is slidably connected to the mounting rod 37 along the length direction of the mounting rod 37, and the clamping rod 38 extends from a clamping groove 1 35 and a clamping groove 2 36. A plurality of clamping plates 39 are arranged at intervals in the upper and lower parts of the clamping rod 38, and a rotating wheel 40 is rotatably connected to the lower end of the clamping rod 38, and the rotating wheel 40 contacts the conical surface 281 of the conical block 28, and a plurality of springs 41 are fixedly connected between the clamping rod 38 and the inner wall of the working chamber 22.

[0034] The beneficial effects of the above technical solution are:

[0035] When conducting a concrete compressive strength test, first open the protective cover 9, put the concrete test block into the test box 8, and realize the centering positioning of the concrete sample through the synchronous movement of the four sets of jaw assemblies toward the center, ensuring the stable installation of the concrete sample and the accuracy of the installation position. The concrete test block is clamped by the clamping assembly, and then evenly loaded by the hydraulic cylinder 5, and the experimental process data is recorded, and then the compressive strength of the concrete test block is obtained by calculation.

[0036] When placing the concrete sample, the electric telescopic rod 23 is in an extended state, so that the upper surface of the test plate is close to the upper surface of the test box 8, which is convenient for taking and placing the concrete sample, reducing the probability of missing the concrete sample during the taking and placing process, and at the same time, by reducing the height difference of the concrete sample falling, the destructiveness of the concrete sample when it falls is reduced, thereby ensuring the safety of the concrete sample taking and placing process.

[0037] After the concrete sample is placed stably, the electric telescopic rod 23 contracts, and the experimental plate 25 moves downward under the gravity of the concrete sample, so that the spring 2 31 and the spring 34 are compressed, and the conical block 28 moves downward until the second step shaft 292 contacts the bottom surface of the second step groove 302. As the conical block 28 moves downward, the clamping rod 38 that loses the squeezing effect of the conical block 28 moves toward the middle direction under the action of the spring 41. Through the synchronous movement of the four groups of jaw assemblies, the centering positioning of the concrete sample is achieved, ensuring the stable installation of the concrete sample and the accuracy of the installation position.

[0038] By setting the positioning rod 24, the accuracy of the position of the experimental plate 25 during the up and down movement is ensured, thereby ensuring the accurate correspondence between the electric telescopic rod 23 and the positioning hole 26. By setting the positioning hole 26, the stability of the connection between the electric telescopic rod 23 and the experimental plate 25 is ensured, ensuring that the force on the experimental plate 25 is uniform, reducing the probability of the experimental plate 25 tilting during the up and down movement, and reducing the failure rate of the device.

[0039] By using the easily detachable experimental plate 25 as a carrier of the concrete sample, it is convenient to remove the experimental plate 25 as a whole after the experiment is completed to remove the concrete debris generated during the experiment, thereby reducing the difficulty of removing the concrete debris and improving the convenience of using the experimental device.

[0040] Example 2

[0041] On the basis of Example 1, the support 2 includes a buffer box 10, which has an opening at the lower end. A vertically arranged electric telescopic rod 11 is fixedly connected to the top surface of the buffer box 10, a lifting plate 12 is fixedly connected to the lower end of the electric telescopic rod 11, and a buffer assembly is connected to the lower surface of the lifting plate 12.

[0042] Preferably, the buffer assembly includes a connecting frame 13, a damping rod 14 and a supporting base plate 15. The connecting frame 13 is fixedly connected to the lower surface of the lifting plate 12. Two connecting seats 16 are symmetrically arranged on the lower surface of the connecting frame 13. A damping rod 14 is hinged on each of the two connecting seats 16. The other end of the damping rod 14 is hinged on a sliding block 17. Two sliding grooves 18 along the left and right directions are symmetrically arranged on the upper surface of the supporting base plate 15. A center rod 19 along the left and right directions is fixedly connected in the sliding groove 18. The sliding block 17 is slidably connected to the center rod 19 along the left and right directions. A spring 20 is fixedly connected between the sliding block 17 and the side wall of the sliding groove 18.

[0043] The beneficial effects of the above technical solution are:

[0044] When the concrete compressive strength test is not performed, the electric telescopic rod 11 is in a retracted state, at which time the buffer assembly is accommodated in the buffer box 10, the lower surface of the buffer box 10 is in contact with the installation surface, and the buffer assembly is not subjected to force.

[0045] Before conducting the concrete compressive strength test, the electric telescopic rod 11 is extended, so that the lifting plate 12 moves downward, so that the supporting bottom plate 15 contacts the ground, and the buffer box 10 leaves the installation surface. When external vibration occurs, the dual shock-absorbing effect of the damping rod 14 and the spring 20 can reduce the impact of external vibration on the test box 8, thereby improving the accuracy of the experimental results.

[0046] When the concrete compression test is not being carried out, the experimental device is supported by the lower surface of the buffer box 10, and the experimental device is supported only by the buffer assembly during the experiment, thereby greatly shortening the time that the buffer assembly is in a loaded state, effectively delaying the aging of parts in the buffer assembly, extending the service life of the buffer assembly, and ensuring that the buffer assembly maintains an excellent buffering effect during use.

[0047] Example 3

[0048] On the basis of any one of Examples 1-2, T-shaped slide rails 42 are respectively provided on the upper surfaces of the front and rear side walls of the test box 8, a center block 43 is provided in the middle of the T-shaped slide rail 42, and a T-shaped block 44 is fixedly connected to the lower surfaces of the front and rear side walls of the protective cover 9. The T-shaped block 44 slides in the left and right directions in the T-shaped slide rail 42, and a working groove 45 is provided on the top surface of the end where the two protective covers 9 are close to each other, and each protective cover 9 slides on the upper end of the test box 8 through a group of correspondingly arranged drive components.

[0049] Preferably, the driving assembly includes a closing assembly and an opening assembly, the closing assembly is used to drive the protective cover 9 to close automatically, and the opening assembly is used to drive the two protective covers 9 to move away from each other.

[0050] Preferably, two left-right symmetrical rebound cavities 46 are arranged inside the center block 43, and the closing component includes a rebound shaft 47, which is installed in the rebound cavity 46, and a connecting rope 48 is wound around the rebound shaft 47, the fixed end of the connecting rope 48 is fixedly connected to the rebound shaft 47, and the free end of the connecting rope 48 is fixedly connected to the side wall of the T-shaped block 44.

[0051] Preferably, the lower surface of the T-shaped block 44 is provided with a driving groove 49 along the length direction of the T-shaped block 44, and two transmission chambers 50 are also symmetrically provided inside the test box 8. The transmission chamber 50 is connected to the working chamber 22 through a connecting groove 51. Two sets of opening components are respectively arranged in the two transmission chambers 50. The opening components include a fixed shaft 52, a steering shaft 53, two connecting ropes 54 and a control frame 55. The control frame 55 is U-shaped and is fixedly connected to the side wall of the conical block 28. The other end of the control frame 55 is connected to the side wall of the conical block 28. The two connecting ropes 54 extend into the transmission chamber 50 through the connecting groove 51. A fixed shaft 52 and a steering shaft 53 are fixedly connected to the inner wall of each transmission chamber 50. One end of each of the two connecting ropes 54 is fixedly connected to the fixed shaft 52. The other end of the connecting rope 54 passes over the top of the control frame 55 and then passes under the steering shaft 53 to extend into the transmission channel 56. After passing through the transmission channel 56, the two connecting ropes 54 respectively extend into the driving grooves 49 of the T-shaped blocks 44 on the front and rear sides of the protective cover 9, and are fixedly connected to the end surface of the driving groove 49 away from the output rod 6.

[0052] In this embodiment, the transmission channel 56 is arranged in the left and right side walls of the test box 8, and the transmission channel 56 includes a vertical channel 561 and two transverse channels 562. The lower end of the vertical channel 561 is connected to the transmission chamber 50, and the two transverse channels 562 are respectively arranged on the front and rear sides of the vertical channel 561. One end of the transverse channel 562 is connected to the vertical channel 561, and the other end of the transverse channel 562 is connected to the T-shaped slide rail 42.

[0053] The beneficial effects of the above technical solution are:

[0054] The connection between the T-shaped block 44 and the T-shaped slide rail 42 ensures the stability of the connection between the protective cover 9 and the test box 8. The cooperation of the closing component and the opening component realizes the automatic opening and closing of the protective cover 9 according to the rise and fall of the test plate 25 (conical block 28), thereby realizing the automation of the operation, reducing the number of operations performed by the staff during use, and improving the convenience of use.

[0055] When the conical block 28 is in a high position, the control frame 55 pulls the connecting rope 2 54 between the fixed shaft 52 and the steering shaft 53 upwards, thereby realizing the mutual separation of the two protective covers 9 (automatic opening of the protective covers 9) under the action of the connecting rope 2 54. When the conical block 28 descends, the control frame 55 no longer pulls the connecting rope 2 54. Under the automatic rebound action of the rebound shaft 47, the two protective covers 9 approach each other, realizing the automatic closing of the protective covers 9, thereby realizing the synchronization of the opening and closing of the protective covers 9 and the lifting and lowering of the experimental plate 25, ensuring that the protective covers 9 are in a closed state during the experiment, avoiding concrete debris from splashing out of the test box 8, and ensuring the safety of the experimental process.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A strength detection device for preparing concrete with mineral solid waste admixtures, characterized in that: The invention comprises a base (1), wherein a plurality of groups of supports (2) are fixedly connected to the side wall of the base (1), a plurality of support columns (3) are fixedly connected to the upper surface of the base (1), an upper mounting plate (4) is fixedly connected to the upper surface of the plurality of support columns (3), a hydraulic cylinder (5) is mounted on the upper surface of the upper mounting plate (4), an output rod (6) is mounted at the lower end of the hydraulic cylinder (5), a test pressure head (7) is mounted at the lower end of the output rod (6), a test box (8) is fixedly connected to the upper surface of the base (1), a clamping assembly is arranged in the test box (8), and two protective covers (9) are slidably connected to the upper end of the test box (8) in the left-right direction; The inner bottom surface of the test box (8) is provided with a support platform (21), a working chamber (22) is provided inside the support platform (21), two groups of vertically arranged electric telescopic rods (23) are symmetrically provided on the left and right sides of the support platform (21), four vertically arranged positioning rods (24) are also fixedly connected to the inner bottom surface of the test box (8), a test plate (25) is slidably connected to the positioning rods (24) in the up and down directions, two positioning holes (26) corresponding to the electric telescopic rods (23) are provided on the lower surface of the test plate (25), and a clamping assembly is arranged in the working chamber (22); The upper surface of the support platform (21) is provided with a receiving groove (27), and the clamping assembly includes a conical block (28), the lower surface of the conical block (28) is fixedly connected with a first step shaft (291), and the lower end of the first step shaft (291) is fixedly connected with a second step shaft (292); the bottom surface of the working chamber (22) is provided with a first step groove (301), and the lower end of the first step groove (301) is provided with a second step groove (302), and a spring 2 (31) is fixedly connected between the upper surface of the first step groove (301) and the lower surface of the first step shaft (291), and the upper surface of the conical block (28) is fixedly connected with a connecting rod (32), and the connecting rod (32) slides in the up and down direction and passes through the bottom surface of the receiving groove (27), and the upper end of the connecting rod (32) is fixedly connected A support plate (33) is provided, and a spring three (34) is fixedly connected between the lower surface of the support plate (33) and the inner bottom surface of the accommodating groove (27). A group of clamping claw assemblies are respectively arranged around the front, back, left and right sides of the conical block (28), and the clamping claw assemblies are in contact with the conical surface (281) of the conical block (28). The vertical distance between the upper end of the conical surface (281) and the vertical axis of the conical block (28) is smaller than the vertical distance between the lower end of the conical surface (281) and the vertical axis of the conical block (28). Four groups of clamping grooves one (35) are arranged on the support platform (21), and four groups of clamping grooves two (36) corresponding to the clamping grooves one (35) are arranged on the experimental plate (25), and the clamping claw assemblies extend from the clamping grooves one (35) and the clamping grooves two (36).

2. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 1, characterized in that: The clamping jaw assembly comprises a mounting rod (37), the mounting rod (37) being fixedly connected to the inner wall of the working chamber (22) in the horizontal direction, a clamping rod (38) being slidably connected to the mounting rod (37) along the length direction of the mounting rod (37), the clamping rod (38) extending from a clamping groove 1 (35) and a clamping groove 2 (36), a plurality of clamping plates (39) being arranged at intervals in the upper and lower parts of the clamping rod (38), a rotating wheel (40) being rotatably connected to the lower end of the clamping rod (38), the rotating wheel (40) being in contact with a conical surface (281) of the conical block (28), and a plurality of springs (41) being fixedly connected between the clamping rod (38) and the inner wall of the working chamber (22).

3. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 1, characterized in that: The support (2) comprises a buffer box (10), the lower end of the buffer box (10) is provided with an opening, the inner top surface of the buffer box (10) is fixedly connected to a vertically arranged electric telescopic rod (11), the lower end of the electric telescopic rod (11) is fixedly connected to a lifting plate (12), and the lower surface of the lifting plate (12) is connected to a buffer assembly.

4. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 3 is characterized in that: The buffer assembly comprises a connecting frame (13), a damping rod (14) and a supporting base plate (15). The connecting frame (13) is fixedly connected to the lower surface of the lifting plate (12). Two connecting seats (16) are symmetrically arranged on the lower surface of the connecting frame (13). A damping rod (14) is hinged on each of the two connecting seats (16). The other end of the damping rod (14) is hinged on a sliding block (17). Two sliding grooves (18) are symmetrically arranged along the left and right directions on the upper surface of the supporting base plate (15). A center rod (19) along the left and right directions is fixedly connected in the sliding groove (18). The sliding block (17) is slidably connected to the center rod (19) along the left and right directions. A spring (20) is fixedly connected between the sliding block (17) and the side wall of the sliding groove (18).

5. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 4, characterized in that: The upper surfaces of the front and rear side walls of the test box (8) are respectively provided with T-shaped slide rails (42), the middle of the T-shaped slide rails (42) is provided with a center block (43), the lower surfaces of the front and rear side walls of the protective cover (9) are fixedly connected with T-shaped blocks (44), the T-shaped blocks (44) slide in the left and right directions in the T-shaped slide rails (42), the top surfaces of the ends of the two protective covers (9) close to each other are provided with working grooves (45), and each protective cover (9) slides on the upper end of the test box (8) through a set of correspondingly arranged drive components.

6. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 5, characterized in that: The driving component comprises a closing component and an opening component, the closing component is used to drive the protective cover (9) to close automatically, and the opening component is used to drive the two protective covers (9) to move away from each other.

7. A strength detection device for preparing concrete with mineral solid waste admixtures according to claim 6, characterized in that: Two left-right symmetrical rebound chambers (46) are arranged inside the central block (43), and the closing component comprises a rebound rotating shaft (47), which is installed in the rebound chamber (46), and a connecting rope (48) is wound around the rebound rotating shaft (47), the fixed end of the connecting rope (48) is fixedly connected to the rebound rotating shaft (47), and the free end of the connecting rope (48) is fixedly connected to the side wall of the T-shaped block (44).

8. The strength detection device for preparing concrete with mineral solid waste admixtures according to claim 6, characterized in that: The lower surface of the T-shaped block (44) is provided with a driving groove (49) along the length direction of the T-shaped block (44). Two transmission chambers (50) are also symmetrically provided inside the test box (8). The transmission chamber (50) is connected with the working chamber (22) through a connecting groove (51). Two groups of opening components are respectively arranged in the two transmission chambers (50). The opening components include a fixed shaft (52), a steering shaft (53), two connecting ropes (54) and a control frame (55). The control frame (55) is U-shaped. The control frame (55) is fixedly connected to the side wall of the conical block (28). The other end of the control frame (55) is connected to the side wall of the conical block (28). The groove (51) extends into the transmission cavity (50). The inner wall of each transmission cavity (50) is fixedly connected to a fixed shaft (52) and a steering shaft (53). One end of two connecting ropes (54) is fixedly connected to the fixed shaft (52). The other end of the connecting ropes (54) passes over the top of the control frame (55) and then passes under the steering shaft (53) to extend into the transmission channel (56). After passing through the transmission channel (56), the two connecting ropes (54) respectively extend into the driving grooves (49) of the T-shaped blocks (44) at the front and rear sides of the protective cover (9) and are fixedly connected to the end surface of the driving groove (49) away from the output rod (6).

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