Sprayed concrete sample preparation tool

Abstract

The utility model provides a sprayed concrete sample preparation tool, which relates to the field of sample preparation tools, and comprises a rack, a driving device mounted on the side wall of the rack, four cutting wheels detachably connected to the driving device, a moving device mounted at the top of the rack, and a rotating device mounted at the moving end of the moving device, a rotating plate is installed at the rotating end of the rotating device, a fixing frame is fixedly connected to the rotating plate through a support, two cutting grooves are transversely formed in the top of the fixing frame, four cutting grooves are longitudinally formed in the top of the fixing frame, and two cutting holes are formed in each of the two transverse side walls of the fixing frame; two cutting holes are formed in the side wall of the fixing frame, guide holes are formed in three plate bodies, separated by the two cutting holes, of the side wall of the fixing frame, pressing frames are movably inserted into the guide holes in a penetrating mode, and a pressing device is installed below the fixing frame. And the operation is relatively convenient.

Description

Technical Field

[0001] This utility model relates to the field of sample preparation tools, and in particular to a shotcrete sample preparation tool. Background Technology

[0002] Shotcrete is widely used in modern engineering construction due to its fast construction speed, strong adaptability, and lack of the need for formwork. For example, it is widely used in water conservancy and hydropower projects, slope protection in municipal engineering projects, and surrounding rock lining in tunnels and underground engineering projects.

[0003] Testing the quality of shotcrete during construction is crucial for project safety. In practice, during on-site construction, the mold (450*350*120mm) for the shotcrete slab is placed on its side. After spraying and molding, and after a certain curing period, it is sent to the laboratory to be processed into 100*100*100mm standard compressive strength test specimens.

[0004] In water conservancy and hydropower projects, specifications require the fabrication of compressive strength test specimens with dimensions of 100*100*100mm. Currently, the commonly used cutting tools for concrete slabs in laboratories are mostly single-blade or double-blade saws. After cutting in one direction, the concrete slab must be disassembled, re-measured, and then fixed again, which consumes a lot of time and effort.

[0005] Therefore, it is necessary to provide a new shotcrete sample preparation tool to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a shotcrete sample preparation tool.

[0007] The shotcrete sample preparation tool provided by this utility model includes a frame, a drive device installed on the side wall of the frame, four cutting wheels detachably connected to the drive device, a moving device installed on the top of the frame, a rotating device installed on the moving end of the moving device, a rotating plate installed on the rotating end of the rotating device, and a U-shaped fixed frame fixedly connected to the rotating plate by a bracket. The top of the fixed frame has two cutting slots opened laterally and four cutting slots opened longitudinally. Two cutting holes are opened on each of the two side walls of the fixed frame laterally. Guide holes are opened on the three plates separated by the two cutting holes on the side walls of the fixed frame. Pressing frames are movably inserted in the guide holes. The bottom end of the pressing frame extends to the bottom of the fixed frame. A pressing device is installed below the fixed frame. The pressing device can simultaneously drive six pressing frames to move in the guide holes.

[0008] Preferably, the moving device includes a mounting frame, a threaded rod, a transmission block, a guide rod, and a first motor. The mounting frame is fixed to the top of the frame, the threaded rod is rotatably connected to the mounting frame, the transmission block is threadedly connected to the threaded rod, the guide rod is fixed on the mounting frame and movably passes through the transmission block, the first motor is fixed on the mounting frame, and the output end of the first motor is fixedly connected to the end of the threaded rod.

[0009] Preferably, the rotating device includes a movable plate and a second motor. The movable plate is fixed on the transmission block, the second motor is fixed on the movable plate, and the output end of the second motor is fixedly connected to the rotating plate.

[0010] Preferably, the pressing device includes a threaded frame and a lifting plate. The top of the threaded frame is rotatably connected to the bottom of the fixed frame, and the lifting plate is threadedly connected to the threaded frame. Six pressing frames are fixedly connected to the lifting plate.

[0011] Preferably, the driving device includes a rotating component, a rotating rod, and four positioning components. The rotating component is fixedly installed on the frame, and the rotating rod is fixedly connected to the rotating end of the rotating component. Slide grooves are provided on both sides of the rotating rod. The four positioning components are used to position the four cutting wheels respectively, and all four positioning components can slide in the slide grooves.

[0012] Preferably, the positioning component includes a collar, a positioning bolt, two upright plates, and two sliders. The collar is sleeved on the rotating rod, and the two sliders are fixed to the inner wall of the collar. The two sliders can slide in two grooves respectively. The two upright plates are fixed to both sides of the collar, and each upright plate has a fixing bolt inserted into a through hole in the cutting wheel. The fixing bolt is threaded with a nut. The positioning bolt is threaded onto the collar, and the end of the positioning bolt can be moved into a positioning groove in the outer wall of the rotating rod.

[0013] Compared with related technologies, the shotcrete sample preparation tool provided by this utility model has the following beneficial effects:

[0014] The concrete slab is placed on the fixed frame, which is located below the ends of multiple pressing frames. Rotating the threaded frame causes the pressing frames to move downwards due to the guide holes, thus positioning the concrete slab and preventing it from shifting during cutting. First, two cutting wheels are installed in the middle position. After the two positioning bolts move into the two positioning slots in the middle of the rotating rod, the positioning bolts are rotated to complete the installation of the cutting wheels. After making a transverse cut on the concrete slab, the slab is rotated 90 degrees, and then the other two cutting wheels are installed on the rotating rod to make a longitudinal cut. The operation is convenient, requiring no disassembly or re-fixing of the concrete slab. Due to the large weight of the concrete slab, this type of sample preparation device does not require frequent movement of the slab, saving physical effort. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the shotcrete sample preparation tool provided by this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure from another angle is shown;

[0017] Figure 3 for Figure 1 A partial structural diagram of the structure shown;

[0018] Figure 4 for Figure 1 The diagram shows a partial cross-section of the structure. Figure 1 ;

[0019] Figure 5 for Figure 1 The diagram shows a partial cross-section of the structure. Figure 2 .

[0020] The following are the labels in the diagram: 1. Frame; 2. Cutting wheel; 3. Rotating plate; 4. Fixed frame; 5. Cutting groove; 6. Cutting hole; 7. Guide hole; 8. Pressing frame; 9. Mounting frame; 10. Threaded rod; 11. Transmission block; 12. Guide rod; 13. First motor; 14. Moving plate; 15. Second motor; 16. Threaded frame; 17. Lifting plate; 18. Rotating rod; 19. Collar; 20. Positioning bolt; 21. Vertical plate; 22. Slider; 23. Slide groove; 24. Fixed bolt; 25. Positioning groove; 26. Support. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1-5 ,in, Figure 1A schematic diagram of the structure of the shotcrete sample preparation tool provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the structure from another angle is shown; Figure 3 for Figure 1 A partial structural diagram of the structure shown; Figure 4 for Figure 1 The diagram shows a partial cross-section of the structure. Figure 1 ; Figure 5 for Figure 1 The diagram shows a partial cross-section of the structure. Figure 2 .

[0023] In the specific implementation process, such as Figures 1-5 As shown, the device includes a frame 1. A drive unit is mounted on the side wall of the frame 1. Four cutting wheels 2 are detachably connected to the drive unit. The diameter of the cutting wheels 2 is 330mm, and the distance between the four cutting wheels 2 is 100mm. A moving device is mounted on the top of the frame 1. A rotating device is mounted on the moving end of the moving device. A rotating plate 3 is mounted on the rotating end of the rotating device. A U-shaped fixing frame 4 is fixedly connected to the rotating plate 3 via a bracket 26. The top of the fixing frame 4 has two horizontal cutting grooves 5 and four vertical cutting grooves 5. Two cutting holes 6 are opened on each of the two horizontal side walls of the fixing frame 4. Guide holes 7 are opened on the three plates separated by the two cutting holes 6 on the side walls of the fixing frame 4. A pressing frame 8 is movably inserted into the guide holes 7. The bottom of the frame 8 extends to the bottom of the fixed frame 4. A pressing device is installed below the fixed frame 4. The pressing device can simultaneously drive six pressing frames 8 to move within the guide hole 7. The fixed frame 4 is 500mm long, 350mm wide, and 160mm high, with a net height of 140mm. The cutting groove 5 is 15mm wide and 15mm deep. The concrete slab is installed on the fixed frame 4. First, two cutting wheels 2 are installed. The concrete slab moves to the left until it is cut into three rectangular concrete blocks below the cutting wheels 2. Then, the concrete slab fixed frame is rotated 90 degrees to add two more cutting wheels 2. Then, it moves to the right until the cutting wheels 2 cut, cutting the concrete block into 15 concrete blocks. The concrete slab cutting is completed. The three 100*100*100 test blocks in the middle are the test blocks.

[0024] The moving device includes a mounting frame 9, a threaded rod 10, a transmission block 11, a guide rod 12, and a first motor 13. The mounting frame 9 is fixed to the top of the frame 1. The threaded rod 10 is rotatably connected to the mounting frame 9. The transmission block 11 is threadedly connected to the threaded rod 10. The guide rod 12 is fixed to the mounting frame 9 and moves through the transmission block 11. The first motor 13 is fixed to the mounting frame 9. The output end of the first motor 13 is fixedly connected to the end of the threaded rod 10. The first motor 13 drives the threaded rod 10 to rotate. Under the limit of the guide rod 12, the transmission block 11 drives the rotating device and the concrete slab on the fixed frame 4 to move, which is convenient for cutting.

[0025] The rotating device includes a movable plate 14 and a second motor 15. The movable plate 14 is fixed on the transmission block 11, and the second motor 15 is fixed on the movable plate 14. The output end of the second motor 15 is fixedly connected to the rotating plate 3. The second motor 15 drives the movable plate 14 to rotate 90 degrees, so that the fixed frame 4 rotates from the longitudinal direction to another angle, and then performs transverse cutting on the longitudinally cut concrete slab.

[0026] The pressing device includes a threaded frame 16 and a lifting plate 17. The top of the threaded frame 16 is rotatably connected to the bottom of the fixed frame 4. The lifting plate 17 is threadedly connected to the threaded frame 16. Six pressing frames 8 are fixedly connected to the lifting plate 17. When clamping the concrete slab, the concrete slab is placed on the fixed frame 4. At this time, the concrete slab is located below the ends of the multiple pressing frames 8. Rotating the threaded frame 16 causes the pressing frames 8 to be limited by the guide holes 7. Therefore, the lifting plate 17 drives the multiple pressing frames 8 to move down, thereby achieving the positioning of the concrete slab and making it less likely for the concrete slab to shift during cutting.

[0027] The driving device includes a rotating component, a rotating rod 18, and four positioning components. The rotating component is fixedly mounted on the frame 1, and the rotating rod 18 is fixedly connected to the rotating end of the rotating component. Slide grooves 23 are provided on both sides of the rotating rod 18. The four positioning components are used to position the four cutting wheels 2, and all four positioning components can slide within the slide grooves 23. The rotating component includes a drive motor and a coupling. The drive motor transmits power to the cutting wheels 2 through the coupling. After the drive motor starts, its output shaft rotates, driving the cutting wheels 2 to rotate through the rotating rod 18 via the coupling. Under high-speed rotation, the cutting wheels 2 achieve cutting through shearing action with the concrete slab. The positioning components include a collar 19, positioning bolts 20, two upright plates 21, and two sliders 22. The collar 19 is sleeved on the rotating rod 18. The two sliders 22 are fixed to the inner wall of the collar 19 and can slide within the two slide grooves 23 respectively. The two upright plates 21 are fixed to both sides of the collar 19, and fixing bolts 24 are inserted into each of the upright plates 21. The fixing bolt 24 is inserted into the through hole of the cutting wheel 2, and a nut is threaded onto the fixing bolt 24. The positioning bolt 20 is threaded onto the collar 19, and the end of the positioning bolt 20 can be moved into the positioning groove 25 on the outer wall of the rotating rod 18. When installing the cutting wheel 2, the fixing bolt 24 is inserted into the vertical plate 21 and the cutting wheel 2, and a nut is screwed onto the other end of the fixing bolt 24, thereby completing the connection between the positioning component and the cutting wheel 2. This connection does not require disassembly after connection. The cutting wheel 2 is sleeved on the rotating rod 18, and the two sliders 22 slide in the two sliding grooves 23. First, the two cutting wheels 2 are installed in the middle position. When the two positioning bolts 20 move into the two positioning grooves 25 in the middle of the rotating rod 18, the positioning bolts 20 are rotated to complete the installation of the cutting wheel 2. After the concrete slab is cut horizontally, the concrete slab is rotated 90 degrees, and then the other two cutting wheels 2 are installed on the rotating rod 18 to achieve the longitudinal cutting of the concrete slab.

[0028] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A shotcrete sample preparation tool, characterized in that, The device includes a frame (1), on which a drive device is installed on the side wall. Four cutting wheels (2) are detachably connected to the drive device. A moving device is installed on the top of the frame (1). A rotating device is installed on the moving end of the moving device. A rotating plate (3) is installed on the rotating end of the rotating device. A U-shaped fixed frame (4) is fixedly connected to the rotating plate (3) by a bracket (26). The top of the fixed frame (4) has two horizontal cutting grooves (5) and four vertical cutting grooves (5). Two cutting holes (6) are opened on the two horizontal side walls of the fixed frame (4). Guide holes (7) are opened on the three plates separated by the two cutting holes (6) on the side wall of the fixed frame (4). Pressing frames (8) are movably inserted in the guide holes (7). The bottom end of the pressing frame (8) extends to the bottom of the fixed frame (4). A pressing device is installed below the fixed frame (4). The pressing device can simultaneously drive six pressing frames (8) to move in the guide holes (7).

2. The shotcrete sample preparation tool according to claim 1, characterized in that, The moving device includes a mounting frame (9), a threaded rod (10), a transmission block (11), a guide rod (12), and a first motor (13). The mounting frame (9) is fixed on the top of the frame (1). The threaded rod (10) is rotatably connected to the mounting frame (9). The transmission block (11) is threadedly connected to the threaded rod (10). The guide rod (12) is fixed on the mounting frame (9) and moves through the transmission block (11). The first motor (13) is fixed on the mounting frame (9), and the output end of the first motor (13) is fixedly connected to the end of the threaded rod (10).

3. The shotcrete sample preparation tool according to claim 2, characterized in that, The rotating device includes a movable plate (14) and a second motor (15). The movable plate (14) is fixed on the transmission block (11), and the second motor (15) is fixed on the movable plate (14). The output end of the second motor (15) is fixedly connected to the rotating plate (3).

4. The shotcrete sample preparation tool according to claim 1, characterized in that, The pressing device includes a threaded frame (16) and a lifting plate (17). The top of the threaded frame (16) is rotatably connected to the bottom of the fixed frame (4). The lifting plate (17) is threadedly connected to the threaded frame (16). Six pressing frames (8) are fixedly connected to the lifting plate (17).

5. The shotcrete sample preparation tool according to claim 1, characterized in that, The driving device includes a rotating component, a rotating rod (18), and four positioning components. The rotating component is fixedly installed on the frame (1). The rotating rod (18) is fixedly connected to the rotating end of the rotating component. Slide grooves (23) are provided on both sides of the rotating rod (18). The four positioning components are used to position the four cutting wheels (2) respectively. All four positioning components can slide in the slide grooves (23).

6. The shotcrete sample preparation tool according to claim 5, characterized in that, The positioning components include a collar (19), a positioning bolt (20), two upright plates (21), and two sliders (22). The collar (19) is sleeved on the rotating rod (18). The two sliders (22) are fixed to the inner wall of the collar (19) and can slide in the two sliding grooves (23) respectively. The two upright plates (21) are fixed on both sides of the collar (19). Fixing bolts (24) are inserted on the two upright plates (21). The fixing bolts (24) are inserted into the through holes opened by the cutting wheel (2) and the fixing bolts (24) are threaded with nuts. The positioning bolts (20) are threaded on the collar (19) and the end of the positioning bolts (20) can be moved into the positioning grooves (25) opened on the outer wall of the rotating rod (18).

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