Indoor rapid preparation equipment for sprayed concrete test block

Abstract

The invention belongs to the technical field of tunnel engineering, and discloses an indoor rapid preparation device for a sprayed concrete test block, the indoor rapid preparation device comprises a preparation frame shell, one side of the top of the preparation frame shell is fixedly connected with a stirring shell, and the side wall of the bottom end of the stirring shell is communicated with a conveying cylinder; and one end of the conveying cylinder penetrates through the preparation frame shell and extends to the outside of the preparation frame shell, slurry enters the mold shell through the injection pipe, and accurate simulation and controllable and repeatable preparation of the whole process of on-site concrete spraying are achieved. According to the method, small and modular equipment is adopted, the test blocks can be rapidly prepared in batches by using a small amount of raw materials indoors, and the cost and on-site dependence are reduced. By means of online quantitative mixing and closed-loop parameter control, consistency of the size, compactness and mechanical property of each batch of test blocks is guaranteed, meanwhile, parameters such as the injection pressure and the accelerator mixing amount can be controlled, a quantitative relation between the parameters and the mechanical property and durability of the test blocks can be conveniently established, and a scientific basis is provided for proportion optimization and standardization.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tunnel engineering, and specifically relates to an indoor rapid preparation equipment for a shotcrete test block. BACKGROUND

[0002] The process realizes rapid compaction of the concrete material through high-pressure jetting force, can effectively fill the gaps between the base surface and the aggregate, and significantly reduces the generation of shrinkage cracks in the later period; meanwhile, the accurate addition of the rapid hardener ensures that the molding layer reaches the required strength in a short time, avoiding the cumbersome requirements of the traditional curing and support system. With the advantages of fast molding speed, high density, high construction efficiency and the like, the shotcrete technology has been widely popularized and applied in the fields of rock slope support, initial support of tunnel excavation, mine roadway lining and subway shield excavation and the like.

[0003] At present, for the indoor performance test of the shotcrete, the commonly used large plate shotcreting and cutting sampling method needs to be completed by using the on-site shotcreting machine, and the method has high material and site cost, large operation difficulty, large engineering quantity and limited test piece batch; and the manual mixing and pouring forming method often has defects such as uneven setting, burr and pore in the pouring process due to the short setting time of the rapid hardener and the decrease of the slurry fluidity, and it is difficult to obtain a test block meeting the requirements of the standard size and mechanical properties. In order to simplify the process, the concrete test is simplified into a mortar test piece, which further weakens the representativeness of the test results on the performance of the real shotcrete, leading to large deviation of the proportioning optimization design and material performance evaluation, and even unable to fully reflect the key technical indexes such as bleeding, cohesion and early strength development in the high-pressure shotcreting process.

[0004] In view of the above limitations, the application provides a method and device for efficiently, accurately and repeatedly preparing a shotcrete test block in an indoor environment, which organically integrates four function modules of online quantitative mixing of concrete and rapid hardener, small-scale shotcreting, detachable mold forming and vibration, so as to realize an integrated test solution of rapid test block forming, dense structure and stable performance. SUMMARY

[0005] In order to solve the problem of being unable to accurately detect the performance of the real shotcrete in the background art, since uneven distribution of the slurry occurs in the pouring process, simplifying the preparation process will weaken the detection of the performance of the shotcrete and affect the preparation efficiency of the concrete test block, and the application provides an indoor rapid preparation equipment for a shotcrete test block.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a kind of indoor rapid preparation equipment of shotcrete test block, including preparation frame shell, the top side of the preparation frame shell is fixedly connected with stirring shell, the bottom end side wall of the stirring shell is communicated with conveying cylinder, one end of the conveying cylinder penetrates preparation frame shell and extends to the outside of preparation frame shell, one end of the conveying cylinder is fixedly connected with motor, further including, rapid preparation mechanism, the rapid preparation mechanism includes the injection shell being communicated in the bottom of conveying cylinder, the top side of the injection shell is communicated with grouting pump, the bottom of the injection shell is communicated with injection tube, one end of the motor is provided with integrated assembly, for making concrete material to carry out rapid preparation work, the integrated assembly includes spiral rod being in contact with the inner wall of conveying cylinder, for the concrete material is transported.

[0007] Preferably, the output end of the motor is fixedly connected with a round rod, the outer wall of one end of the round rod is fixedly connected to the inner wall of the spiral rod, the bottom of the stirring shell is fixedly connected with a motor, and the output end of the motor is fixedly connected with a rotating frame rod.

[0008] Preferably, the outer wall of the top end of the rotating frame rod is rotatably connected to the inner wall of the fixed frame, the outer wall of the fixed frame is fixedly connected to the top end inner wall of the stirring shell, and the outer wall of the middle end of the rotating frame rod is fixedly connected with a stirring paddle.

[0009] Preferably, the inner wall of the preparation frame shell is provided with a clamping assembly, the clamping assembly includes two vertical rods fixedly connected to the bottom inner wall of the preparation frame shell, the outer wall of the top end of the vertical rod is slidably connected with a lifting platform, the bottom of the lifting platform is fixedly connected with an elastic member, the bottom of the elastic member is fixedly connected to the inner wall of the bottom of the preparation frame shell, and the top of the lifting platform is provided with a mold shell on both sides.

[0010] Preferably, the bottom of the lifting platform is provided with a limiting groove on both sides, the inner wall of the limiting groove is slidably connected with a sliding block at both ends, the bottom of the sliding block is rotatably connected with a rotating plate, the bottom of the rotating plate is rotatably connected to the inner wall of the bottom of the preparation frame shell, one side of the sliding block is fixedly connected with a bent rod, and one end of the bent rod away from the sliding block is fixedly connected with a connecting plate.

[0011] Preferably, one side of the connecting plate is slidably connected with an elastic sliding frame, one end of the elastic sliding frame away from the connecting plate is fixedly connected with a clamping plate, one side of the clamping plate away from the elastic sliding frame is fixedly connected with a flexible block, and one side of the flexible block away from the clamping plate is in contact with the outer wall of the mold shell.

[0012] Preferably, the side wall of the connecting plate is provided with an auxiliary assembly, the auxiliary assembly includes a telescopic rotating member rotatably connected to both ends of the connecting plate away from the bent rod, and the end of the telescopic rotating member away from the connecting plate is rotatably connected with a concave shell.

[0013] Preferably, the outer wall of the concave shell is fixedly connected with an arc-shaped positioning frame, the two ends of one side of the clamping plate are both penetrated and slidably connected with elastic impact rods, and the side wall of one end of the elastic impact rod is provided with a special-shaped fixing plate.

[0014] Preferably, the bottom of the special-shaped fixing plate is fixedly connected to the inner wall bottom of the preparation frame shell, the top of the lifting platform is respectively provided with eight square holes, and the outer wall of one end of the special-shaped fixing plate is arranged at the inner wall of the square hole.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The integrated assembly and the clamping assembly are arranged, the concrete material and water are poured into the interior of the stirring shell, the motor is started, the motor drives the stirring paddle in the integrated assembly to rotate, the water and the concrete material are mixed and stirred, meanwhile, the circular rod drives the spiral rod to rotate, the spiral rod can convey the slurry after stirring into the interior of the conveying cylinder during the rotation process, the slurry enters the interior of the material spraying shell through the conveying cylinder, the grouting pump is started, the grouting pump pressurizes the slurry in the interior of the material spraying shell, the slurry enters the interior of the mold shell through the injection pipe, and the whole process of the on-site sprayed concrete is accurately simulated and controllable and repeatable preparation is realized. The method adopts miniaturization and modularization equipment, and can quickly batch prepare test blocks with a small amount of raw materials in the room, thereby reducing the cost and site dependence. Through online quantitative mixing and closed-loop parameter control, the consistency of each batch of test blocks in size, compactness and mechanical properties is ensured, and parameters such as spraying pressure and accelerator content can also be controlled, so that a quantitative relationship between the test blocks and the mechanical and durability performance is established, and scientific basis is provided for proportioning optimization and standardization. The elastic deformation of the elastic member enables the lifting platform to be suspended at the top of the vertical rod, when the slurry is not injected into the interior of the mold shell, the injection port of the injection pipe is located at the inner wall bottom of the mold shell, and the distance between the injection pipe and the mold shell is shortened, when the slurry is injected into the interior of the mold shell, the impact force of the slurry can be reduced, and the mold shell is protected.

[0017] The clamping assembly is arranged, two mold shells of different shapes can be placed on the top of the lifting platform before preparation, the mold shells are clamped between the two flexible blocks, and the phenomenon of deviation of the mold shells when the mold shells are impacted by slurry is prevented, when the lifting platform descends, the lifting platform and the preparation frame shell gradually approach, the rotating plate drives the sliding blocks to slide along the inner wall of the limiting groove, the two sliding blocks approach each other, and the sliding blocks drive the flexible blocks in the clamping assembly to move, so that the clamping effect of the two flexible blocks on the mold shells is improved, and the risk of product defects or unstable quality caused by position deviation is reduced.

[0018] The application sets up the cooperation of the clamping assembly and the auxiliary assembly, when the two connecting plates move close to each other, the connecting plates drive the telescopic rotating pieces to move, the telescopic rotating pieces drive the concave shells to move, the two adjacent concave shells move close to each other, the concave shells drive the arc-shaped positioning frames to move, the two arc-shaped positioning frames move close to each other, the outer wall of the mold shell is clamped and positioned, so that the mold shell can be located at the bottom of the injection pipe all the time and does not deviate, and meanwhile, through multidirectional clamping, different shapes of mold shells can be adaptively clamped. No matter how the shape of the mold shell changes, the system can adjust the relative position of the concave shell and the arc-shaped positioning frame to ensure the clamping and positioning effect. When the lifting platform descends, the lifting platform drives the clamping plate in the clamping assembly to descend, the clamping plate drives the elastic impact rod to descend, the elastic impact rod will contact the side wall of the special-shaped fixed plate in the descending process, due to the setting of the multiple protrusions of the special-shaped fixed plate, the elastic impact rod can be extruded to make the elastic impact rod intermittently impact the bottom outer wall of the mold shell. Through the impact, the slurry can be uniformly distributed in the inside of the mold shell. This uniform distribution avoids the accumulation or unevenness of the slurry in the mold, and ensures the filling quality of the whole mold. Meanwhile, the bubbles in the slurry can be effectively broken to avoid the formation of bubbles in the slurry solidification process, which is very important for the quality of the final product. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall top view structure of the application;

[0020] Figure 2 It is a schematic diagram of the overall sectional structure of the application;

[0021] Figure 3 It is a schematic diagram of the side surface structure of the preparation frame shell of the application;

[0022] Figure 4 It is a schematic diagram of the sectional structure of the lifting platform of the application;

[0023] Figure 5 It is a schematic diagram of the top view structure of the connecting plate of the application;

[0024] Figure 6 It is a schematic diagram of the sectional structure of the mold shell of the application;

[0025] Figure 7 It is an enlarged view of A in the application; Figure 6

[0026] Figure 8 It is a schematic diagram of the side surface structure of the elastic impact rod of the application.

[0027] ​In the figure: 1, preparation frame shell; 2, stirring shell; 3, conveying cylinder; 4, motor; 5, rapid preparation mechanism; 51, spray shell; 52, grouting pump; 53, injection tube; 54, integrated component; 55, clamping component; 56, auxiliary component; 541, round rod; 542, screw rod; 543, first bevel gear; 544, second bevel gear; 545, rotating frame rod; 546, fixed frame; 547, stirring paddle; 551, Vertical rod; 552, elastic part; 553, lifting platform; 554, mold shell; 555, limiting groove; 556, rotating plate; 557, slider; 558, bending rod; 559, connecting plate; 5510, elastic sliding frame; 5511, clamping plate; 5512, flexible block; 561, telescopic rotating part; 562, concave shell; 563, arc-shaped positioning frame; 564, elastic impact rod; 565, special-shaped fixing plate; 566, square hole. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 8 As shown, the present invention provides an indoor rapid preparation device for shotcrete test blocks, comprising a preparation frame shell 1, a stirring shell 2 fixedly connected to one side of the top of the preparation frame shell 1, a conveying cylinder 3 connected to the side wall of the bottom end of the stirring shell 2, one end of the conveying cylinder 3 passes through the preparation frame shell 1 and extends to the outside of the preparation frame shell 1, one end of the conveying cylinder 3 is fixedly connected to a motor 4, and further comprising;

[0030] The rapid preparation mechanism 5 includes a spraying shell 51 connected to the bottom of the conveying barrel 3, a grouting pump 52 is connected to the top side of the spraying shell 51, and injection tubes 53 are connected to both sides of the bottom of the spraying shell 51. An integrated component 54 is provided at one end of the motor 4 for quickly preparing the concrete material. The integrated component 54 includes a screw rod 542 that is contacted with the inner wall of the conveying barrel 3 for conveying the concrete material.

[0031] With the above scheme: the whole process of on-site sprayed concrete is accurately simulated and controllable and reproducible preparation is realized. The method uses miniaturized and modularized equipment, and can quickly batch produce test blocks in a laboratory with a small amount of raw materials, thereby reducing costs and site dependence. Through online quantitative mixing and closed-loop parameter control, the consistency of each batch of test blocks in size, density and mechanical properties is ensured, and parameters such as spraying pressure and superplasticizer content can also be controlled, thereby establishing a quantitative relationship between the test blocks and the mechanical and durability performance, and providing a scientific basis for proportioning optimization and standardization.

[0032] The output end of the motor 4 is fixedly connected with a circular rod 541, one end of the outer wall of the circular rod 541 is fixedly connected to the inner wall of the screw rod 542, the bottom of the stirring shell 2 is fixedly connected with a motor 543, and the output end of the motor 543 is fixedly connected with a rotating frame rod 545.

[0033] The top end of the rotating frame rod 545 is rotatably connected to the inner wall of the fixed frame 546, the outer wall of the fixed frame 546 is fixedly connected to the top end of the inner wall of the stirring shell 2, and the middle end of the outer wall of the rotating frame rod 545 is fixedly connected with the stirring paddle 547.

[0034] With the above scheme: by reducing the design of the power source, the maintenance work of the device is facilitated, better coordination between the parts of the system can be achieved, the risk of failure caused by inconsistency between multiple power sources is reduced, and the stability of the overall system is improved.

[0035] As shown in Figures 1 to 8 The inner wall of the preparation frame shell 1 is provided with a clamping assembly 55, the clamping assembly 55 includes two vertical rods 551 fixedly connected to the inner wall bottom of the preparation frame shell 1, the top end of the outer wall of the vertical rod 551 is slidably connected with a lifting platform 553, the bottom of the lifting platform 553 is fixedly connected with an elastic member 552, the bottom of the elastic member 552 is fixedly connected to the inner wall bottom of the preparation frame shell 1, and the top of the lifting platform 553 is provided with a mold shell 554 on both sides, and the end of the injection pipe 53 away from the material spraying shell 51 is in contact with the inner wall bottom of the mold shell 554.

[0036] With the above scheme: through the elastic deformation of the elastic member 552, when the slurry is not sprayed, the injection pipe 53 is located at the inner wall bottom of the mold shell 554, the distance between the injection pipe 53 and the mold shell 554 is shortened, and when the slurry is sprayed into the inside of the mold shell 554 with impact force, the impact force of the slurry can be reduced, and the mold shell 554 is protected.

[0037] The bottom of the lifting platform 553 is provided with a limiting groove 555 on both sides, the inner wall of the limiting groove 555 is slidably connected with a sliding block 557 at both ends, the bottom of the sliding block 557 is rotatably connected with a rotating plate 556, the bottom of the rotating plate 556 is rotatably connected with the inner wall of the preparation rack shell 1, one side of the sliding block 557 is fixedly connected with a bent rod 558, and the end, away from the sliding block 557, of the bent rod 558 is fixedly connected with a connecting plate 559.

[0038] One side of the connecting plate 559 is slidably connected with an elastic sliding frame 5510, the end, away from the connecting plate 559, of the elastic sliding frame 5510 is fixedly connected with a clamping plate 5511, one side of the clamping plate 5511, away from the elastic sliding frame 5510, is fixedly connected with a flexible block 5512, and the side, away from the clamping plate 5511, of the flexible block 5512 is in contact with the outer wall of the mold shell 554.

[0039] By adopting the above scheme: the material of the flexible block 5512 is silica gel, which is a very soft and elastic material that can adapt to different shapes and provide good clamping effect. Its flexibility allows it to well adapt to the profile of the mold shell 554 during clamping, reducing shaking. In addition, silica gel also has a certain friction, which can stabilize the mold shell 554 and avoid sliding or shaking.

[0040] The side wall of the connecting plate 559 is provided with an auxiliary assembly 56, the auxiliary assembly 56 comprises a telescopic rotating piece 561 rotatably connected at both ends of the side, away from the bent rod 558, of the connecting plate 559, and the end, away from the connecting plate 559, of the telescopic rotating piece 561 is rotatably connected with a concave shell 562.

[0041] One side of the outer wall of the concave shell 562 is fixedly connected with an arc-shaped positioning frame 563, the clamping plate 5511 is slidably connected with an elastic impact rod 564 at both ends, and the side wall of one end of the elastic impact rod 564 is in contact with a special-shaped fixed plate 565.

[0042] The bottom of the special-shaped fixed plate 565 is fixedly connected with the inner wall of the preparation rack shell 1, the top of the lifting platform 553 is provided with eight square holes 566, and the outer wall of one end of the special-shaped fixed plate 565 is arranged at the inner wall of the square hole 566.

[0043] By adopting the above scheme: when the lifting platform 553 is lifted, the square hole 566 can prevent the lifting platform 553 from being stuck with the special-shaped fixed plate 565 during operation, which facilitates the contact between the elastic impact rod 564 and the side wall of the special-shaped fixed plate 565 during the descending process, and improves the stability of the device operation.

[0044] The working principle and use process of the present invention are as follows: concrete material and water are poured into the interior of the mixing shell 2, and the motor 4 is started while the motor 543 is started. The motor 543 drives the rotating frame rod 545 to rotate, and the rotating frame rod 545 drives the stirring paddle 547 to rotate to mix and stir the water and concrete material. The motor 4 drives the round rod 541, and the round rod 541 drives the screw rod 542 to rotate. During the rotation of the screw rod 542, the slurry after mixing can be transported to the interior of the conveying cylinder 3. The slurry enters the interior of the spraying shell 51 through the conveying cylinder 3. The grouting pump 52 is started. The grouting pump 52 pressurizes the slurry inside the spraying shell 51, so that the slurry enters the interior of the mold shell 554 through the injection tube 53, thereby realizing accurate simulation and controllable and repeatable preparation of the entire process of on-site spraying concrete. This method uses miniaturized and modular equipment, and can quickly and in batches prepare test blocks indoors using a small amount of raw materials, reducing costs and on-site dependence. Through online quantitative mixing and closed-loop parameter control, the consistency of size, density, and mechanical properties of each batch of test blocks is guaranteed. At the same time, parameters such as injection pressure and accelerator dosage can be controlled to establish a quantitative relationship between the mechanical and durability properties of the test blocks, providing a scientific basis for ratio optimization and standardization. Due to the elastic deformation of elastic member 552, elastic member 552 drives lifting platform 553 to suspend at the top of vertical rod 551. When slurry is not injected into the interior of mold shell 554, the injection port of injection tube 53 can be located at the bottom of the inner wall of mold shell 554, shortening the distance between injection tube 53 and mold shell 554. When the slurry generates an impact force and is injected into the interior of mold shell 554, the impact force of the slurry can be reduced, thereby protecting mold shell 554.

[0045] Before preparation, two mold shells 554 of different shapes can be placed on the top of the lifting platform 553, so that the mold shell 554 is clamped between the two flexible blocks 5512 to prevent the mold shell 554 from being offset when impacted by the slurry. When the lifting platform 553 descends, the lifting platform 553 and the preparation frame shell 1 gradually approach each other, so that the rotating plate 556 drives the slider 557 to slide along the inner wall of the limit groove 555, and the two sliders 557 approach each other. The slider 557 drives the bent rod 558 and the connecting plate 559 to move, and the connecting plate 559 drives the elastic sliding frame 5510 and the clamping plate 5511 to move, and the clamping plate 5511 drives the flexible block 5512 to move, thereby improving the clamping effect of the two flexible blocks 5512 on the mold shell 554, and reducing the risk of product defects or unstable quality due to position offset.

[0046] When the two connecting plates 559 move close to each other, the connecting plates 559 drive the telescopic rotating pieces 561 to move, the telescopic rotating pieces 561 drive the concave shells 562 to move, the two adjacent concave shells 562 move close to each other, the concave shells 562 drive the arc-shaped positioning frames 563 to move, and the two arc-shaped positioning frames 563 move close to each other to clamp and position the outer wall of the mold shell 554, so that the mold shell 554 can be located at the bottom of the injection pipe 53 all the time without deviation, and meanwhile, through multi-directional clamping, adaptive clamping can be achieved according to mold shells of different shapes. Regardless of the shape change of the mold shell, the system can ensure the clamping and positioning effect by adjusting the relative positions of the concave shells and the arc-shaped positioning frames. When the lifting platform 553 descends, the lifting platform 553 drives the clamping plates 5511 in the clamping assembly 55 to descend, the clamping plates 5511 drive the elastic impact rods 564 to descend, and the elastic impact rods 564 will contact the side wall of the special-shaped fixed plate 565 during the descending process. Due to the arrangement of the multiple protrusions of the special-shaped fixed plate 565, the elastic impact rods 564 can be extruded to intermittently impact the bottom end outer wall of the mold shell 554. Through such impact, the slurry can be uniformly distributed inside the mold shell. Such uniform distribution avoids the accumulation or unevenness of the slurry inside the mold, ensuring the filling quality of the entire mold. Meanwhile, the bubbles in the slurry can be effectively broken, avoiding the formation of bubbles during the solidification of the slurry, which is very important for the quality of the final product.

[0047] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An indoor rapid preparation device for shotcrete test blocks, comprising a preparation frame shell (1), a stirring shell (2) fixedly connected to one side of the top of the preparation frame shell (1), a conveying cylinder (3) connected to the side wall of the bottom end of the stirring shell (2), one end of the conveying cylinder (3) passing through the preparation frame shell (1) and extending to the outside of the preparation frame shell (1), and one end of the conveying cylinder (3) fixedly connected to a motor (4), characterized in that: Also includes; A rapid preparation mechanism (5) includes a spray shell (51) connected to the bottom of a conveying cylinder (3), a top side of the spray shell (51) connected to a grouting pump (52), and both sides of the bottom of the spray shell (51) connected to injection pipes (53). An integrated component (54) is provided at one end of the motor (4) for rapidly preparing concrete materials. The integrated component (54) includes a screw rod (542) contacting the inner wall of the conveying cylinder (3) for conveying concrete materials.

2. The indoor rapid preparation equipment for shotcrete test blocks according to claim 1 is characterized in that: The output end of the motor (4) is fixedly connected to a round rod (541), the outer wall of one end of the round rod (541) is fixedly connected to the inner wall of the spiral rod (542), the bottom of the stirring shell (2) is fixedly connected to a motor (543), and the output end of the motor (543) is fixedly connected to a rotating frame rod (545).

3. The indoor rapid preparation equipment for shotcrete test blocks according to claim 2, characterized in that: The top outer wall of the rotating frame rod (545) is rotatably connected to the inner wall of the fixed frame (546), the outer wall of the fixed frame (546) is fixedly connected to the top inner wall of the stirring shell (2), and the middle outer wall of the rotating frame rod (545) is fixedly connected to a stirring paddle (547).

4. The indoor rapid preparation equipment for shotcrete test blocks according to claim 3 is characterized in that: The inner wall of the preparation frame shell (1) is provided with a clamping assembly (55), and the clamping assembly (55) includes two vertical rods (551) fixedly connected to the bottom of the inner wall of the preparation frame shell (1), and the outer wall of the top end of the vertical rod (551) is slidably connected to a lifting platform (553), and the bottom of the lifting platform (553) is fixedly connected to an elastic member (552), and the bottom of the elastic member (552) is fixedly connected to the bottom of the inner wall of the preparation frame shell (1), and mold shells (554) are provided on both sides of the top of the lifting platform (553), and the end of the injection tube (53) away from the spray shell (51) is contacted with the bottom of the inner wall of the mold shell (554).

5. The indoor rapid preparation equipment for shotcrete test blocks according to claim 4 is characterized in that: Limiting grooves (555) are provided on both sides of the bottom of the lifting platform (553), and both ends of the inner wall of the limiting groove (555) are slidably connected to sliders (557), and the bottom of the slider (557) is rotatably connected to a rotating plate (556), and the bottom of the rotating plate (556) is rotatably connected to the bottom of the inner wall of the preparation frame shell (1), and one side of the slider (557) is fixedly connected to a bent rod (558), and the end of the bent rod (558) away from the slider (557) is fixedly connected to a connecting plate (559).

6. The indoor rapid preparation equipment for shotcrete test blocks according to claim 5, characterized in that: One side of the connecting plate (559) is slidably connected to an elastic sliding frame (5510), and the end of the elastic sliding frame (5510) away from the connecting plate (559) is fixedly connected to a clamping plate (5511), and the side of the clamping plate (5511) away from the elastic sliding frame (5510) is fixedly connected to a flexible block (5512), and the side of the flexible block (5512) away from the clamping plate (5511) contacts the outer wall of the mold shell (554).

7. The indoor rapid preparation equipment for shotcrete test blocks according to claim 6, characterized in that: An auxiliary component (56) is provided on the side wall of the connecting plate (559), and the auxiliary component (56) includes a telescopic rotating member (561) rotatably connected to both ends of the connecting plate (559) away from the bent rod (558), and the end of the telescopic rotating member (561) away from the connecting plate (559) is rotatably connected to a concave shell (562).

8. The indoor rapid preparation equipment for shotcrete test blocks according to claim 7, characterized in that: An arc-shaped positioning frame (563) is fixedly connected to one side of the outer wall of the concave shell (562), and elastic impact rods (564) are passed through and slidably connected to both ends of one side of the clamping plate (5511), and one end of the elastic impact rod (564) is in contact with the side wall thereof and is provided with a special-shaped fixing plate (565).

9. The indoor rapid preparation equipment for shotcrete test blocks according to claim 8, characterized in that: The bottom of the special-shaped fixing plate (565) is fixedly connected to the bottom of the inner wall of the preparation frame shell (1), and eight square holes (566) are respectively opened on the top of the lifting platform (553). The outer wall of one end of the special-shaped fixing plate (565) is set at the inner wall of the square hole (566).

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