A device for detecting early strength of shotcrete

Abstract

The application provides a kind of early strength detection equipment of shotcrete, relating to shotcrete strength detection technical field.The early strength detection equipment of shotcrete, including first mounting seat and second mounting seat, one side of the second mounting seat is fixedly connected with rotary mounting block, the first mounting seat and rotary mounting block are rotatably connected by movable shaft.The application, start third servo motor, the output shaft of third servo motor rotates with rotating disc, so that reciprocating linkage pull rod with reciprocating moving plate moves back and forth, so that the impact hammer reciprocating moves, so that the impact hammer impacts the concrete layer on the surface of steel pipe, the impact strength is fed back by the pressure of pressure sensor, the early strength of concrete layer is judged, the locking bolt is loosened, the second mounting shaft is rotated, the length of the second mounting shaft and the first mounting shaft is increased, the impact strength of the impact hammer can be adjusted within a certain range, and the detection data is relatively accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shotcrete strength detection, in particular to a shotcrete early strength detection device. BACKGROUND

[0002] The steel pipe surface shotcrete support is a comprehensive support method. In the area where the stratum is soft, weakened and deformed greatly, the steel pipe surface shotcrete support can reinforce the geological structure, improve the stability of the stratum and enhance the bearing capacity of the stratum, thereby providing strong support for the safety during the engineering construction and operation. The steel pipe surface shotcrete support can effectively fill the underground cavity, so that the integrity of the stratum is guaranteed, thereby avoiding the occurrence of stratum collapse and ensuring the safety during the engineering construction and operation. In the area where the stratum deforms greatly, the steel pipe surface shotcrete support can reinforce the geological structure, limit the stratum deformation and ensure the stability of the stratum, thereby ensuring the smooth passage of the tunnel and the operation safety. The steel pipe surface shotcrete support can provide a high-strength underground support structure, which forms a whole with various structures in the underground space. In the case of high underground water level or water pressure, the steel pipe surface shotcrete support can effectively avoid the occurrence of stratum deformation and collapse.

[0003] In order to verify the strength of the shotcrete, a layer of concrete layer is often sprayed on the surface of the steel pipe. After the concrete layer is solidified, the strength of the concrete layer is determined by knocking. In the traditional detection method, the concrete layer on the surface of the steel pipe is mainly knocked by manpower, and the strength is determined by artificial experience or detected by automatic knocking equipment. However, the existing automatic knocking equipment is difficult to knock any position on the surface of the steel pipe, and the detection data is not comprehensive. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects of the prior art, the present application provides a shotcrete early strength detection device, which solves the problem that in the traditional detection method, the concrete layer on the surface of the steel pipe is mainly knocked by manpower, the strength is determined by artificial experience or detected by automatic knocking equipment, but the existing automatic knocking equipment is difficult to knock any position on the surface of the steel pipe, and the detection data is not comprehensive.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: a kind of early strength detection equipment of shotcrete, including first mount and second mount, the side of the second mount is fixedly connected with rotating mounting block, the first mount is rotatably connected with rotating mounting block by movable shaft, the front side of the first mount and second mount is connected with locking assembly, clamping assembly is arranged between the first mount and second mount, the upper surface of the first mount is fixedly connected with two first rectangular seats, the upper surface of two first rectangular seats is rotatably connected with first threaded rotating rod and first guide vertical pole respectively, first power component for driving the rotation of first threaded rotating rod is installed on the upper surface of the first mount, the outer surface of the first threaded rotating rod is threadedly connected with first lifting block, the outer surface of the first guide vertical pole is slidably connected with second lifting block, first arc strip is fixedly connected between the first lifting block and second lifting block, the lower surface of the first arc strip is slidably connected with moving connection seat, the upper surface of the moving connection seat is installed with second power component, the lower surface of the moving connection seat is installed with impact assembly, the upper surface of the second mount is slidably connected with two second rectangular seats, the upper surface of two second rectangular seats is fixedly connected with second guide vertical pole, the outer surface of two second guide vertical poles is slidably connected with third lifting block, second arc strip is fixedly connected between two third lifting blocks, third power component for driving the movement of two second rectangular seats is installed on the upper surface of the second mount.

[0008] Preferably, the locking assembly includes a first fixed block and a second fixed block, the first fixed block is fixedly connected to the front side of the first mount, the second fixed block is fixedly connected to the front side of the second mount, and a threaded locking rod is threadedly connected between the first fixed block and the second fixed block.

[0009] Preferably, the clamping assembly includes two guide moving rods, two guide moving rods respectively penetrate the first mount and the second mount, and the ends of the two guide moving rods close to each other are fixedly connected with arc clamps, the side walls of the first mount and the second mount are threadedly connected with second threaded rotating rods, one end of the second threaded rotating rod is rotatably connected with the corresponding arc clamp, and the other end of the second threaded rotating rod is fixedly connected with a driving hand wheel.

[0010] Preferably, the first power component includes a first servo motor fixedly connected to the upper surface of the first mount, the output shaft of the first servo motor is fixedly connected with a first pulley, the outer surface of the first threaded rotating rod is fixedly connected with a second pulley, and the first pulley and the second pulley are drivingly connected by a belt.

[0011] Preferably, the lower surfaces of the first and second arc-shaped strips are provided with limiting grooves, the upper surface of the moving connecting base is fixedly connected with a limiting block, the limiting block is slidingly connected in the limiting groove in the lower surface of the first arc-shaped strip, and the cross-sectional shapes of the limiting groove and the limiting block are dovetail shapes.

[0012] Preferably, the second power assembly comprises a second servo motor fixedly connected to the upper surface of the moving connecting base, the output shaft of the second servo motor is fixedly connected with a rotating gear, the upper surfaces of the first and second arc-shaped strips are fixedly connected with semicircular tooth rings, and the rotating gear is meshingly connected with the semicircular tooth ring on the first arc-shaped strip.

[0013] Preferably, the two ends of the first arc-shaped strip are provided with clamping grooves, and the two ends of the second arc-shaped strip are fixedly connected with clamping protrusions, the two clamping protrusions are matched with the two clamping grooves.

[0014] Preferably, the impact assembly comprises a reciprocating moving plate slidingly connected to the lower surface of the moving connecting base, a first mounting shaft is fixedly connected to the side wall of the reciprocating moving plate, a threaded shaft is threadedly connected in the first mounting shaft, a second mounting shaft is fixedly connected to the end of the threaded shaft, an impact hammer is fixedly connected to the end of the second mounting shaft away from the first mounting shaft, a pressure sensor is fixedly embedded in the end of the impact hammer, a locking bolt is threadedly connected to the outer surface of the first mounting shaft, the end of the locking bolt extends into the first mounting shaft and abuts against the threaded shaft, a vertical connecting plate is fixedly connected to the lower surface of the moving connecting base, a first rectangular connecting plate is fixedly connected to the side wall of the vertical connecting plate, a third servo motor is fixedly connected to the side wall of the first rectangular connecting plate, a rotating disc is fixedly connected to the output shaft of the third servo motor, a reciprocating linkage pull rod is rotatably connected to the eccentric position of the outer surface of the rotating disc, and the end of the reciprocating linkage pull rod away from the rotating disc is rotatably connected to the reciprocating moving plate.

[0015] Preferably, the lower surface of the moving connecting base is provided with a first sliding groove, the top of the reciprocating moving plate is fixedly connected with a first sliding block, the first sliding block is slidingly connected in the first sliding groove, the side of the vertical connecting plate away from the first rectangular connecting plate is fixedly connected with a rechargeable battery, and the pressure sensor, the third servo motor and the second power assembly are electrically connected with the battery.

[0016] Preferably, the third power assembly comprises a second rectangular connecting plate fixedly connected to the upper surface of the second mounting seat, a fourth servo motor is fixedly connected to the side wall of the second rectangular connecting plate, a third threaded rotating rod is fixedly connected to the output shaft of the fourth servo motor, a connecting fixed strip is threadedly connected to the outer surface of the third threaded rotating rod, the two ends of the connecting fixed strip are fixedly connected with two second rectangular seats respectively, a second sliding groove is arranged on the upper surface of the second mounting seat, and a second sliding block is fixedly connected to the lower surface of the second rectangular seat and slidably connected in the second sliding groove.

[0017] (Three) beneficial effects

[0018] The application provides a shotcrete early strength detection device.

[0019] 1、the third servo motor is started, the output shaft of the third servo motor rotates with the rotating disc, the reciprocating linkage pull rod moves back and forth with the reciprocating moving plate, the impact hammer moves back and forth, the impact hammer impacts the concrete layer on the surface of the steel pipe, the impact force is fed back through the pressure sensor, the early strength of the concrete layer is judged, the locking bolt is loosened, the second mounting shaft is rotated, the length of the second mounting shaft and the first mounting shaft is increased, the impact force of the impact hammer can be adjusted within a certain range, and the detection data is relatively accurate.

[0020] 2、the second servo motor is started, the output shaft of the second servo motor rotates with the rotating gear, the rotating gear moves with the rotating gear due to the meshing connection between the rotating gear and the semicircular tooth ring, the moving connecting seat can move on the lower surfaces of the first arc-shaped strip and the second arc-shaped strip, so that the position of the impact hammer on the circumferential side of the steel pipe can be adjusted, the first servo motor is started, the output shaft of the first servo motor rotates with the first belt pulley, the first threaded rotating rod rotates, the first lifting block can move up and down on the outer surface of the first threaded rotating rod, so that the height of the impact hammer can be adjusted, and the concrete layer on the surface of the steel pipe can be comprehensively detected, and the comprehensiveness of the detection data is improved.

[0021] 3、the driving hand wheel is rotated, the second threaded rotating rod rotates with the driving hand wheel, the second threaded rotating rod moves with the arc-shaped clamping plate, so that the two arc-shaped clamping plates are close to each other, and the two arc-shaped clamping plates clamp the steel pipe, in this way, the device can be fixed at different heights of the steel pipe, and the operability is high. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a first perspective view of a shotcrete early strength detection device according to the application;

[0023] Figure 2A second perspective three-dimensional structural schematic view of the early strength detection equipment for the sprayed concrete provided by the application;

[0024] Figure 3 A top view of the early strength detection equipment for the sprayed concrete provided by the application;

[0025] Figure 4 A first arc-shaped strip structural schematic view of the early strength detection equipment for the sprayed concrete provided by the application;

[0026] Figure 5 A moving connecting seat structural schematic view of the early strength detection equipment for the sprayed concrete provided by the application;

[0027] Figure 6 A second arc-shaped strip structural schematic view of the early strength detection equipment for the sprayed concrete provided by the application;

[0028] Figure 7 A Figure 1 Enlarged schematic view of A in the middle.

[0029] 1, first mounting seat; 2, second mounting seat; 3, rotating mounting block; 4, first rectangular seat; 5, first threaded rotating rod; 6, first guide vertical rod; 7, first servo motor; 8, second rectangular seat; 9, second guide vertical rod; 10, first lifting block; 11, second lifting block; 12, first arc-shaped strip; 13, limiting groove; 14, moving connecting seat; 15, second servo motor; 16, rotating gear; 17, reciprocating moving plate; 18, first mounting shaft; 19, second mounting shaft; 20, impact hammer; 21, pressure sensor; 22, vertical connecting plate; 23, first rectangular connecting plate; 24, third servo motor; 25, rotating disc; 26, reciprocating linkage pull rod; 27, battery; 28, third lifting block; 29, second arc-shaped strip; 30, semicircular tooth ring; 31, clamping protrusion; 32, clamping groove; 33, first fixed block; 34, second fixed block; 35, threaded locking rod; 36, guide moving rod; 37, arc-shaped clamping plate; 38, second threaded rotating rod; 39, driving hand wheel; 40, connecting fixed strip; 41, second rectangular connecting plate; 42, fourth servo motor; 43, third threaded rotating rod; 44, second sliding groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the application.

[0031] Embodiment:

[0032] As Figures 1-7 shown, the embodiment of the present application provides a kind of early strength detection equipment of shotcrete, including first mounting seat 1 and second mounting seat 2, one side of second mounting seat 2 is fixedly connected with rotating mounting block 3, first mounting seat 1 is rotatably connected with rotating mounting block 3 by movable shaft, the front side of first mounting seat 1 and second mounting seat 2 is connected with locking assembly, locking assembly includes first fixed block 33 and second fixed block 34, first fixed block 33 is fixedly connected at the front side of first mounting seat 1, second fixed block 34 is fixedly connected at the front side of second mounting seat 2, screw thread locking rod 35 is connected between first fixed block 33 and second fixed block 34, first mounting seat 1 and second mounting seat 2 are opened, then first mounting seat 1 and second mounting seat 2 are wrapped in the outside of steel pipe, first fixed block 33 and second fixed block 34 are connected by screw thread locking rod 35, the fixation of first mounting seat 1 and second mounting seat 2 is completed;

[0033] First mounting seat 1 and second mounting seat 2 are provided with clamping assembly, clamping assembly includes two guide moving rods 36, two guide moving rods 36 are respectively through first mounting seat 1 and second mounting seat 2, the end of mutual approach of two guide moving rods 36 is fixedly connected with arc clamping plate 37, the side wall of first mounting seat 1 and second mounting seat 2 is all through screw thread connection with second screw thread rotating rod 38, the end of second screw thread rotating rod 38 is rotatably connected with corresponding arc clamping plate 37, the other end of second screw thread rotating rod 38 is fixedly connected with driving hand wheel 39, rotating driving hand wheel 39, driving hand wheel 39 is rotated with second screw thread rotating rod 38, so that second screw thread rotating rod 38 moves with arc clamping plate 37, so that two arc clamping plates 37 are mutually close, so that two arc clamping plates 37 clamp steel pipe;

[0034] The upper surface of first mounting seat 1 is fixedly connected with two first rectangular seats 4, the upper surface of two first rectangular seats 4 is rotatably connected with first screw thread rotating rod 5 and first guide vertical rod 6 respectively, first mounting seat 1 is installed with first power assembly for driving the rotation of first screw thread rotating rod 5, first power assembly includes first servo motor 7 fixedly connected on the upper surface of first mounting seat 1, the output shaft of first servo motor 7 is fixedly connected with first belt pulley, the outer surface of first screw thread rotating rod 5 is fixedly connected with second belt pulley, first belt pulley and second belt pulley are drivenly connected by belt, first servo motor 7 is started, the output shaft of first servo motor 7 is rotated with first belt pulley, so that first screw thread rotating rod 5 is rotated, so that first lifting block 10 can move up and down on the outer surface of first screw thread rotating rod 5, so that the height of impact hammer 20 can be adjusted;

[0035] The outer surface of the first threaded rotating rod 5 is threadedly connected with a first lifting block 10, the outer surface of the first guide vertical rod 6 is slidingly connected with a second lifting block 11, the first lifting block 10 and the second lifting block 11 are fixedly connected with a first arc-shaped strip 12, the lower surface of the first arc-shaped strip 12 is slidingly connected with a moving connecting seat 14, the upper surface of the moving connecting seat 14 is installed with a second power assembly, the second power assembly comprises a second servo motor 15 fixedly connected to the upper surface of the moving connecting seat 14, the output shaft of the second servo motor 15 is fixedly connected with a rotating gear 16, the upper surfaces of the first arc-shaped strip 12 and the second arc-shaped strip 29 are both fixedly connected with a semicircular tooth ring 30, the rotating gear 16 is meshingly connected with the semicircular tooth ring 30 on the first arc-shaped strip 12, the second servo motor 15 is started, the output shaft of the second servo motor 15 rotates with the rotating gear 16, since the rotating gear 16 is meshingly connected with the semicircular tooth ring 30, the rotating gear 16 rotates while moving, the moving connecting seat 14 can move on the lower surfaces of the first arc-shaped strip 12 and the second arc-shaped strip 29, so that the position of the impact hammer 20 on the side of the steel pipe can be adjusted;

[0036] The lower surface of the mobile connecting seat 14 is provided with a percussion assembly, the percussion assembly comprising a reciprocating moving plate 17 slidably connected to the lower surface of the mobile connecting seat 14, a first mounting shaft 18 fixedly connected to the side wall of the reciprocating moving plate 17, a threaded shaft threadedly connected to the inside of the first mounting shaft 18, a second mounting shaft 19 fixedly connected to the end of the threaded shaft, a percussion hammer 20 fixedly connected to the end of the second mounting shaft 19 away from the first mounting shaft 18, a pressure sensor 21 fixedly embedded at the end of the percussion hammer 20, a locking bolt threadedly connected to the outer surface of the first mounting shaft 18, the end of the locking bolt extending into the inside of the first mounting shaft 18 and abutting against the threaded shaft, a vertical connecting plate 22 fixedly connected to the lower surface of the mobile connecting seat 14, a first rectangular connecting plate 23 fixedly connected to the side wall of the vertical connecting plate 22, a third servo motor 24 fixedly connected to the side wall of the first rectangular connecting plate 23, a rotating disc 25 fixedly connected to the output shaft of the third servo motor 24, a reciprocating linkage pull rod 26 rotatably connected to the outer surface of the rotating disc 25 at the eccentric position, the end of the reciprocating linkage pull rod 26 away from the rotating disc 25 being rotatably connected to the reciprocating moving plate 17, a first sliding groove being formed in the lower surface of the mobile connecting seat 14, a first sliding block being fixedly connected to the top of the reciprocating moving plate 17 and slidably connected to the inside of the first sliding groove, a rechargeable battery 27 being fixedly connected to the side of the vertical connecting plate 22 away from the first rectangular connecting plate 23, the pressure sensor 21, the third servo motor 24 and the second power assembly being electrically connected to the battery 27, the battery 27 supplying power to the pressure sensor 21, the third servo motor 24 and the second servo motor 15, facilitating the circumferential movement of the first arc-shaped strip 12 and the second arc-shaped strip 29; starting the third servo motor 24, the output shaft of the third servo motor 24 rotating with the rotating disc 25, causing the reciprocating linkage pull rod 26 to move back and forth with the reciprocating moving plate 17, thereby causing the percussion hammer 20 to move back and forth, so that the percussion hammer 20 impacts the concrete layer on the surface of the steel pipe; the pressure sensor 21 adopts existing mature technology, has Bluetooth function, can be connected with a mobile terminal, and can feedback the impact force in real time;

[0037] The upper surface of the second mounting base 2 is slidably connected with two second rectangular seats 8, the upper surfaces of the two second rectangular seats 8 are fixedly connected with second guide vertical rods 9, the outer surfaces of the two second guide vertical rods 9 are slidably connected with third lifting blocks 28, the two third lifting blocks 28 are fixedly connected with a second arc-shaped strip 29, the lower surfaces of the first arc-shaped strip 12 and the second arc-shaped strip 29 are both provided with limiting grooves 13, the upper surface of the moving connection seat 14 is fixedly connected with a limiting block, the limiting block is slidably connected in the limiting groove 13 provided in the lower surface of the first arc-shaped strip 12, the limiting groove 13 and the limiting block are both in dovetail shape in section, both ends of the first arc-shaped strip 12 are provided with clamping grooves 32, both ends of the second arc-shaped strip 29 are fixedly connected with clamping protrusions 31, the two clamping protrusions 31 are matched with the two clamping grooves 32, the upper surface of the second mounting base 2 is provided with a third power assembly for driving the movement of the two second rectangular seats 8, the third power assembly comprises a second rectangular connecting plate 41 fixedly connected to the upper surface of the second mounting base 2, a fourth servo motor 42 fixedly connected to the sidewall of the second rectangular connecting plate 41, a third threaded rotating rod 43 fixedly connected to the output shaft of the fourth servo motor 42, a connecting fixed strip 40 threadedly connected to the outer surface of the third threaded rotating rod 43, and the two ends of the connecting fixed strip 40 are fixedly connected with the two second rectangular seats 8 respectively, the upper surface of the second mounting base 2 is provided with a second sliding groove 44, the lower surface of the second rectangular seat 8 is fixedly connected with a second sliding block, and the second sliding block is slidably connected in the second sliding groove 44, the fourth servo motor 42 is started, the output shaft of the fourth servo motor 42 rotates with the third threaded rotating rod 43, the connecting fixed strip 40 moves horizontally on the outer surface of the third threaded rotating rod 43, the connecting fixed strip 40 moves with the two second rectangular seats 8, the two second guide vertical rods 9 move with the second arc-shaped strip 29 through the two third lifting blocks 28, so that the two clamping protrusions 31 are clamped into the two clamping grooves 32.

[0038] Working principle:

[0039] In use, after the concrete layer sprayed on the surface of the test steel pipe is solidified, the early strength detection is carried out, the first mounting base 1 and the second mounting base 2 are opened, and then the first mounting base 1 and the second mounting base 2 are wrapped outside the steel pipe, the first fixed block 33 and the second fixed block 34 are threadedly connected through the threaded locking rod 35, the fixing of the first mounting base 1 and the second mounting base 2 is completed, then the driving hand wheel 39 is rotated, the driving hand wheel 39 rotates with the second threaded rotating rod 38, the second threaded rotating rod 38 moves with the arc-shaped clamping plate 37, so that the two arc-shaped clamping plates 37 are close to each other, and the two arc-shaped clamping plates 37 clamp the steel pipe (in this way, the device can be fixed at different heights of the steel pipe);

[0040] Start the fourth servo motor 42, the output shaft of the fourth servo motor 42 rotates with the third screw rod 43, the connecting fixed strip 40 moves horizontally on the outer surface of the third screw rod 43, the connecting fixed strip 40 moves with the two second rectangular seats 8, the two second guide vertical rods 9 move with the second arc-shaped strip 29 through the two third lifting blocks 28, so that the two clamping protrusions 31 are clamped into the two clamping grooves 32 (since the second arc-shaped strip 29 can move up and down freely, before the clamping protrusion 31 is clamped into the clamping groove 32, the height of the second arc-shaped strip 29 needs to be manually held to ensure that the clamping protrusion 31 can be clamped into the clamping groove 32), so that the first arc-shaped strip 12 and the second arc-shaped strip 29 form a complete circular structure;

[0041] Start the first servo motor 7, the output shaft of the first servo motor 7 rotates with the first belt pulley, so that the first screw rod 5 rotates, allowing the first lifting block 10 to move up and down on the outer surface of the first screw rod 5, thereby adjusting the height of the impact hammer 20;

[0042] Start the second servo motor 15, the output shaft of the second servo motor 15 rotates with the rotating gear 16, since the rotating gear 16 is meshed and connected with the semicircular tooth ring 30, the rotating gear 16 moves while rotating, moving the connecting seat 14 to move on the lower surface of the first arc-shaped strip 12 and the second arc-shaped strip 29, thereby adjusting the position of the impact hammer 20 on the side of the steel pipe;

[0043] Start the third servo motor 24, the output shaft of the third servo motor 24 rotates with the rotating disc 25, so that the reciprocating linkage pull rod 26 moves the reciprocating plate 17 back and forth, thereby moving the impact hammer 20 back and forth, so that the impact hammer 20 impacts the concrete layer on the surface of the steel pipe, the pressure sensor 21 feeds back the impact force, judges the early strength of the concrete layer, loosens the locking bolt, rotates the second mounting shaft 19, increases the length of the second mounting shaft 19 and the first mounting shaft 18, and can adjust the impact force of the impact hammer 20 within a certain range.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0045] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A shotcrete early strength testing device, comprising a first mounting base (1) and a second mounting base (2), characterized in that: A rotating mounting block (3) is fixedly connected to one side of the second mounting base (2). The first mounting base (1) and the rotating mounting block (3) are rotatably connected via a movable shaft. A locking assembly is connected to the front side of the first mounting base (1) and the second mounting base (2). A clamping assembly is provided between the first mounting base (1) and the second mounting base (2). Two first rectangular seats (4) are fixedly connected to the upper surface of the first mounting base (1). A first threaded rotating rod (5) and a first guide rod (6) are rotatably connected to the upper surfaces of the two first rectangular seats (4). A first power assembly for driving the first threaded rotating rod (5) to rotate is installed on the upper surface of the first mounting base (1). A first lifting block (10) is threadedly connected to the outer surface of the first threaded rotating rod (5). A second lifting block (10) is slidably connected to the outer surface of the first guide rod (6). 1) A first arc-shaped strip (12) is fixedly connected between the first lifting block (10) and the second lifting block (11). A movable connecting seat (14) is slidably connected to the lower surface of the first arc-shaped strip (12). A second power component is installed on the upper surface of the movable connecting seat (14). An impact component is installed on the lower surface of the movable connecting seat (14). Two second rectangular seats (8) are slidably connected to the upper surface of the second mounting seat (2). A second guide rod (9) is fixedly connected to the upper surface of each of the two second rectangular seats (8). A third lifting block (28) is slidably connected to the outer surface of each of the two second guide rods (9). A second arc-shaped strip (29) is fixedly connected between the two third lifting blocks (28). A third power component that drives the two second rectangular seats (8) to move is installed on the upper surface of the second mounting seat (2). The lower surfaces of the first arc-shaped strip (12) and the second arc-shaped strip (29) are provided with limiting grooves (13), and the upper surface of the movable connecting seat (14) is fixedly connected with a limiting block. The limiting block is slidably connected inside the limiting groove (13) provided on the lower surface of the first arc-shaped strip (12). The cross-sectional shape of the limiting groove (13) and the limiting block is dovetail-shaped. The second power assembly includes a second servo motor (15) fixedly connected to the upper surface of the movable connecting seat (14). The output shaft of the second servo motor (15) is fixedly connected to a rotary gear (16). The upper surfaces of the first arc-shaped strip (12) and the second arc-shaped strip (29) are both fixedly connected to a semi-circular toothed ring (30). The rotary gear (16) meshes with the semi-circular toothed ring (30) on the first arc-shaped strip (12). Both ends of the first arc-shaped strip (12) are provided with snap-fit ​​grooves (32), and both ends of the second arc-shaped strip (29) are fixedly connected with snap-fit ​​protrusions (31). The two snap-fit ​​protrusions (31) are adapted to the two snap-fit ​​grooves (32).

2. The early strength testing equipment for shotcrete according to claim 1, characterized in that: The locking assembly includes a first fixing block (33) and a second fixing block (34). The first fixing block (33) is fixedly connected to the front side of the first mounting base (1), and the second fixing block (34) is fixedly connected to the front side of the second mounting base (2). A threaded locking rod (35) is threadedly connected between the first fixing block (33) and the second fixing block (34).

3. The early strength testing equipment for shotcrete according to claim 1, characterized in that: The clamping assembly includes two guide moving rods (36), which pass through the first mounting base (1) and the second mounting base (2) respectively. The ends of the two guide moving rods (36) that are close to each other are fixedly connected to arc-shaped clamping plates (37). The side walls of the first mounting base (1) and the second mounting base (2) are threadedly connected to second threaded rotating rods (38). One end of the second threaded rotating rod (38) is rotatably connected to the corresponding arc-shaped clamping plate (37), and the other end of the second threaded rotating rod (38) is fixedly connected to a drive handwheel (39).

4. The early strength testing equipment for shotcrete according to claim 1, characterized in that: The first power assembly includes a first servo motor (7) fixedly connected to the upper surface of the first mounting base (1), the output shaft of the first servo motor (7) is fixedly connected to a first pulley, and the outer surface of the first threaded rod (5) is fixedly connected to a second pulley. The first pulley and the second pulley are connected by belt drive.

5. The early strength testing equipment for shotcrete according to claim 1, characterized in that: The impact assembly includes a reciprocating moving plate (17) slidably connected to the lower surface of a movable connecting seat (14). A first mounting shaft (18) is fixedly connected to the side wall of the reciprocating moving plate (17). A threaded shaft is threadedly connected to the inside of the first mounting shaft (18). A second mounting shaft (19) is fixedly connected to the end of the threaded shaft. An impact hammer (20) is fixedly connected to the end of the second mounting shaft (19) away from the first mounting shaft (18). A pressure sensor (21) is fixedly embedded at the end of the impact hammer (20). A locking bolt is threadedly connected to the outer surface of the first mounting shaft (18). The end of the locking bolt extends to the first... The interior of the mounting shaft (18) is abutted against the threaded shaft. A vertical connecting plate (22) is fixedly connected to the lower surface of the movable connecting seat (14). A first rectangular connecting plate (23) is fixedly connected to the side wall of the vertical connecting plate (22). A third servo motor (24) is fixedly connected to the side wall of the first rectangular connecting plate (23). A rotating disk (25) is fixedly connected to the output shaft of the third servo motor (24). A reciprocating linkage rod (26) is rotatably connected to the eccentric part of the outer surface of the rotating disk (25). The end of the reciprocating linkage rod (26) away from the rotating disk (25) is rotatably connected to the reciprocating moving plate (17).

6. The early strength testing equipment for shotcrete according to claim 5, characterized in that: The lower surface of the movable connecting seat (14) is provided with a first sliding groove. The top of the reciprocating moving plate (17) is fixedly connected to a first slider. The first slider is slidably connected inside the first sliding groove. The side of the vertical connecting plate (22) away from the first rectangular connecting plate (23) is fixedly connected to a rechargeable battery (27). The pressure sensor (21), the third servo motor (24), and the second power component are all electrically connected to the battery (27).

7. The early strength testing equipment for shotcrete according to claim 1, characterized in that: The third power assembly includes a second rectangular connecting plate (41) fixedly connected to the upper surface of the second mounting base (2). A fourth servo motor (42) is fixedly connected to the side wall of the second rectangular connecting plate (41). A third threaded rotating rod (43) is fixedly connected to the output shaft of the fourth servo motor (42). A connecting fixing strip (40) is threadedly connected to the outer surface of the third threaded rotating rod (43). The two ends of the connecting fixing strip (40) are fixedly connected to two second rectangular seats (8) respectively. A second sliding groove (44) is opened on the upper surface of the second mounting base (2). A second slider is fixedly connected to the lower surface of the second rectangular seat (8). The second slider is slidably connected inside the second sliding groove (44).

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