Concrete strength detection device

Abstract

The utility model provides a concrete strength detection device, which relates to the technical field of building quality detection and comprises a sub-gear box shell, a storage table and a clamping plate. A transmission screw A penetrates through the lifting movable block, and the lifting movable block and the transmission screw A are connected through threads; rollers and rocking handles are arranged, a clamping moving assembly is pushed leftwards and rightwards by moving the rollers, then the two rocking handles are rotated in the same direction, and a transmission screw B drives a storage table to advance or retreat, so that the drilling part of a drilling cylinder on a concrete block placed in the storage table is adjusted, and multiple groups of detection samples can be obtained on the same concrete block; the obtained strength is averaged to obtain a more accurate result, and meanwhile, the waste of materials is also reduced; the drawer is arranged, the base is arranged to be of a structure with the vertically-through middle, chippings falling from concrete blocks fall into the drawer through a base channel in the drilling process, the drawer is pulled out after core drilling work is completed every time, and the chippings are conveniently cleaned; the problem that an existing concrete strength detection device is inconvenient to position is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building quality detection, and more specifically, relates to a concrete strength detection device. Background Art

[0002] During the construction of a building project, after pouring concrete for a component, it is necessary to remove the bubbles inside the concrete to make the concrete densely combined and avoid the occurrence of honeycombing and other phenomena, so as to enhance the strength of the component and improve the quality of the building. The strength here usually refers to the compressive strength of concrete. Commonly used testing methods for concrete compressive strength include rebound method, penetration method, core drilling method, pull-out test and other methods.

[0003] The core drilling method involves drilling cylindrical specimens from the building component or structure to determine the concrete strength within the test age. The core drilling method itself is a destructive test, and multiple sampling over a large area will inevitably damage the concrete structure. Therefore, multiple concrete test blocks with similar performance should be prepared according to the building concrete specifications. To test concrete strength using the core drilling method, the concrete must be clamped and fixed before drilling. However, common core drilling equipment assumes only one cylindrical specimen is taken from a piece of concrete. Once the concrete is clamped, the position cannot be adjusted. To obtain more accurate test results from multiple sets of specimens from a single piece of concrete, the clamping device must be loosened to adjust, making it more cumbersome to use. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a concrete strength detection device to solve the problem of inconvenient positioning of the existing concrete strength detection device.

[0005] The utility model provides a concrete strength detection device, which is achieved by the following specific technical means:

[0006] A concrete strength testing device includes a lifting motor, a top plate, a support column, a middle plate, a support plate, a base, a gear box housing, a motor shaft A, a circular gear A, a circular gear B, a transmission screw A, a lifting block, a first guide rod, a drilling motor, a storage platform, a transmission screw B, side plates, ear plates, a movable roller, a crank handle, a transmission screw C, a mounting plate, a second guide rod, an L-shaped plate, and a clamping plate;

[0007] The lifting motor is installed in the middle above the top plate, and the four corners of the top plate are fixedly connected to the support column by a bolt pair. The lower end of the support column is fixedly connected to the four corners of the middle plate. The side of the middle plate is fixedly connected to the support plate, and the support plate is fixedly connected to the base; a gear box is installed below the top plate, and the gear box includes a gear box housing, a motor shaft A, a circular gear A, a circular gear B and a transmission screw A; the lower end of the motor shaft A is inserted into the bottom surface of the gear box housing to form a rotating connection, and a circular gear A is provided on the lower part of the motor shaft A, and circular gears A are provided on both sides. The gears are respectively engaged with two circular gears B, which are arranged on a transmission screw A. The transmission screw A penetrates the top plate, the gear box housing, and the middle plate to form a rotation connection. The transmission screw A is provided with a thread between the gear box housing and the middle plate. The lifting block is penetrated by the transmission screw A, and the two are connected by a thread. A first guide rod is fixedly connected between the gear box housing and the middle plate, and the first guide rod penetrates the lifting block to form a sliding connection. A drilling motor is installed in the middle of the lifting block. A clamping moving assembly is placed above the base. The holding and moving assembly includes a storage platform, a transmission screw B, a side panel, an ear panel, a moving roller, a shaking handle, a transmission screw C, a clamping motor, a mounting plate, a second guide rod, an L-shaped plate and a clamping plate; a square hole is provided in the middle of the bottom of the storage platform to form a boss, and the left and right sides of the storage platform are respectively connected with a transmission screw B through two screw holes, and the unthreaded parts at both ends of the transmission screw B are inserted into the side panel to form a rotating connection, and a shaking handle is installed at the front end of the transmission screw B; two ear panels are fixedly connected to the top of the side panel, and the outer side of the ear panel is rotatably connected to the moving roller Roller; the left and right sides of the bottom of the storage table are rotatably connected to the bottom plate through two base plates, and the two sides of the transmission screw C are rotatably connected to the mounting plate. The transmission screw C is provided with a thread between the bottom plate of the storage table and the mounting plate. The thread directions of the transmission screws C on the front and back sides of the storage table are opposite, and the threads are interspersed with the bottom of the L-shaped plate to form a threaded connection. A second guide rod is interspersed in the middle of the L-shaped plate to form a sliding connection, and the two ends of the second guide rod are respectively fixedly connected to the storage table and the mounting plate; the top of the L-shaped plate is fixedly connected to the end facing the storage table with a splint.

[0008] Furthermore, the base includes a base shell, a drawer opening, a roller track, a drawer slide and an opening; a square drawer opening is provided on the left side of the base shell, and the drawer opening is connected to the drawer slide inside the base shell; roller tracks in the left and right directions are provided above the base shell, and the roller tracks form a sliding connection with the moving rollers of the clamping moving assembly; an opening is provided at the upper front part of the base shell; and the shaking handle passes through the opening.

[0009] Furthermore, a drawer is placed in the base, the drawer is slidably connected to the drawer slide, and the drawer is provided with a handle on the outside of the base.

[0010] Furthermore, the thread directions of the two transmission screws A in the gear box are opposite; the thread directions of the parts where the lifting block is threadedly connected to the transmission screws A are also opposite.

[0011] Furthermore, the drilling motor leads out a motor shaft B, and the end of the motor shaft B is connected to the drill barrel through a bolt pair.

[0012] Furthermore, the length from the top of the drilling motor to the bottom of the drill barrel is shorter than the distance from the upper end surface of the middle plate to the bottom plate of the drawer.

[0013] Furthermore, the C-end of the transmission screw is fixedly connected to the rotating shaft of the clamping motor, and the clamping motor is installed on the outside of the mounting plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a clamping plate. If the concrete block is not made according to the size of the storage table and is too small to be placed firmly on the storage table, the clamping motor is started, and the transmission screw C drives the L-shaped plate to move along the second guide rod. The distance between the clamping plates on the front and rear sides of the storage table is adjusted according to the width of the concrete block to be tested. This allows the clamping plate to clamp the concrete tightly, avoiding shaking during concrete core drilling, which may cause broken columns and produce invalid samples.

[0016] 2. The utility model is provided with a roller and a rocking handle. The roller is moved left and right to push the clamping moving assembly, and then the two rocking handles are rotated in the same direction to make the transmission screw B drive the storage table forward or backward to adjust the drilling position of the drill tube on the concrete block placed on the storage table. Multiple groups of test samples can be obtained on the same concrete block, and the average value of the obtained strength can be taken, which can reduce errors and obtain more accurate results, while also reducing material waste.

[0017] 3. The utility model is provided with a drawer and a base that is transparent in the middle from top to bottom. During the drilling process, the debris falling from the concrete block falls into the drawer through the base channel. After each core drilling work is completed, the drawer is pulled out by pulling the handle, which is convenient for cleaning the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 This utility model Figure 1 Schematic diagram of the structure from the front view.

[0020] Figure 3 It is a structural schematic diagram of the utility model in a cutaway state of the gear box.

[0021] Figure 4 It is a schematic diagram of the coordination relationship among the base, drawer and clamping moving assembly of the utility model.

[0022] Figure 5It is a structural diagram of the mobile component of the utility model.

[0023] Figure 6 This utility model Figure 5 Enlarged schematic diagram of point A in the middle.

[0024] Figure 7 It is a disassembly diagram of the clamping and moving assembly of the utility model.

[0025] Figure 8 It is a structural diagram of the base of the utility model.

[0026] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0027] 1. Lifting motor; 2. Top plate; 3. Support column; 4. Middle plate; 5. Support plate; 6. Base; 601. Base shell; 602. Drawer opening; 603. Roller track; 604. Drawer slide; 605. Opening; 7. Drawer; 8. Gearbox shell; 9. Motor shaft A; 10. Circular gear A; 11. Circular gear B; 12. Drive screw A; 13. Lifting block; 14. First guide rod; 15. Drilling motor; 16. Motor shaft B; 17. Drill barrel; 18. Storage table; 19. Drive screw B; 20. Side panel; 21. Ear plate; 22. Moving roller; 23. Crank handle; 24. Drive screw C; 25. Clamping motor; 26. Mounting plate; 27. Second guide rod; 28. L-shaped plate; 29. ​​Clamping plate. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] Example:

[0030] As attached Figure 1 To the attached Figure 8 As shown:

[0031] A concrete strength testing device includes a lifting motor 1, a top plate 2, a support column 3, a middle plate 4, a support plate 5, a base 6, a gearbox housing 8, a motor shaft A9, a circular gear A10, a circular gear B11, a transmission screw A12, a lifting block 13, a first guide rod 14, a drilling motor 15, a storage platform 18, a transmission screw B19, a side plate 20, an ear plate 21, a movable roller 22, a crank handle 23, a transmission screw C24, a mounting plate 26, a second guide rod 27, an L-shaped plate 28, and a clamping plate 29.

[0032] The lifting motor 1 is installed in the middle above the top plate 2. The four corners of the top plate 2 are fixedly connected to the support column 3 by a bolt pair. The lower end of the support column 3 is fixedly connected to the four corners of the middle plate 4. The side of the middle plate 4 is fixedly connected to the support plate 5, and the support plate 5 is fixedly connected to the base 6. A gear box is installed below the top plate 2. The gear box includes a gear box housing 8, a motor shaft A9, a circular gear A10, a circular gear B11 and a transmission screw A12. The lower end of the motor shaft A9 is inserted into the bottom surface of the gear box housing 8 to form a rotation connection. A circular gear A10 is provided on the lower part of the motor shaft A9. The two sides of the circular gear A10 are respectively connected to two circular gears B11 Meshing, the circular gear B11 is set on the transmission screw A12, the transmission screw A12 penetrates the top plate 2, the divided gear box housing 8, and the middle plate 4 to form a rotation connection, and the transmission screw A12 is provided with a thread between the divided gear box housing 8 and the middle plate 4; the lifting block 13 is penetrated by the transmission screw A12, and the two are connected by a thread; a first guide rod 14 is fixedly connected between the divided gear box housing 8 and the middle plate 4, and the first guide rod 14 penetrates the lifting block 13 to form a sliding connection; a drilling motor 15 is installed in the middle of the lifting block 13; a clamping moving assembly is placed above the base 6, and the clamping moving assembly includes a storage table 18, a transmission Screw B19, side panel 20, ear panel 21, movable roller 22, crank handle 23, transmission screw C24, clamping motor 25, mounting plate 26, second guide rod 27, L-shaped plate 28 and clamping plate 29; a square hole is provided in the middle of the bottom of the storage platform 18 to form a boss, and a transmission screw B19 is threadedly connected to the left and right sides of the storage platform 18 through two screw holes. The unthreaded parts at both ends of the transmission screw B19 are inserted into the side panel 20 to form a rotational connection, and a crank handle 23 is installed at the front end of the transmission screw B19; two ear panels 21 are fixedly connected to the top of the side panel 20, and the outer side of the ear panel 21 is rotatably connected to the movable roller 22 ; The left and right sides of the bottom of the storage table 18 are rotatably connected to the bottom plate through two places. The two sides of the transmission screw C24 are rotatably connected to the mounting plate 26. The transmission screw C24 is provided with a thread between the bottom plate of the storage table 18 and the mounting plate 26. The thread directions of the transmission screws C24 on the front and back sides of the storage table 18 are opposite. The threads are inserted into the bottom of the L-shaped plate 28 to form a threaded connection. A second guide rod 27 is inserted in the middle of the L-shaped plate 28 to form a sliding connection. The two ends of the second guide rod 27 are respectively fixedly connected to the storage table 18 and the mounting plate 26; a clamping plate 29 is fixedly connected to the end of the top of the L-shaped plate 28 facing the storage table 18.

[0033] Among them, Figure 8 As shown, the base 6 includes a base shell 601, a drawer opening 602, a roller track 603, a drawer slide 604 and an opening 605; a square drawer opening 602 is provided on the left side of the base shell 601, and the drawer opening 602 is connected to the drawer slide 604 inside the base shell 601; roller tracks 603 in the left and right directions are provided above the base shell 601; Figure 4As shown, the roller track 603 forms a sliding connection with the moving roller 22 of the clamping moving assembly, and the clamping moving assembly can be pushed left and right by the moving roller 22; an opening 605 is provided at the upper front portion of the base shell 601; the rocking handle 23 passes through the opening 605, and the two rocking handles 23 are rotated in the same direction, so that the transmission screw B19 drives the storage platform 18 forward or backward to adjust the drilling position of the drill tube 17 on the concrete block placed on the storage platform 18

[0034] Among them, such as Figure 4 As shown, a drawer 7 is placed in the base 6, and the drawer 7 is slidably connected to the drawer slide 604. The drawer 7 is provided with a handle on the outside of the base 6. Each time a concrete sample is drilled using the core drilling method, a large amount of concrete debris is generated. The drawer is provided in the base 6. After each core drilling work is completed, the handle is pulled out to draw out the drawer 7, which is convenient for cleaning the debris.

[0035] Among them, such as Figure 2 As shown, the thread directions of the two transmission screws A12 in the gear box are opposite; the thread directions of the lifting block 13 threadedly connected to the transmission screw A12 are also opposite. By engaging and rotating with the circular gear A10, the circular gear B11 drives the transmission screw A12 to rotate, thereby driving the lifting block 13 to complete the lifting action.

[0036] Among them, such as Figure 2 As shown, the drilling motor 15 leads to the motor shaft B16, and the end of the motor shaft B16 is connected to the drill barrel 17 through a bolt pair. After the concrete drilling is completed, the drilling motor 15 is raised to make the drill barrel 17 reach a certain height, and the bolt pair is unscrewed to remove the drill barrel 17 from the motor shaft B16 to facilitate sampling.

[0037] Among them, such as Figure 1 As shown, the length from the top of the drilling motor 15 to the bottom of the drill barrel 17 is less than the distance from the upper end surface of the middle plate 4 to the bottom plate of the drawer 7, so as to avoid the drill barrel 17 from descending too much and touching and damaging the drawer 7 during the drilling process.

[0038] Among them, such as Figure 5 As shown, the end of the transmission screw C24 is fixedly connected to the rotating shaft of the clamping motor 25, and the clamping motor 25 is installed on the outside of the mounting plate 26. When the concrete block is too small to be placed firmly on the storage platform, the clamping motor 25 is started, and the transmission screw C23 drives the L-shaped plate 28 to move along the second guide rod 27. The distance between the front and rear clamping plates 29 of the storage platform 18 is adjusted according to the width of the concrete block to be detected, so that the clamping plates 29 clamp the concrete.

[0039] The specific usage and function of this embodiment are as follows:

[0040] In the present invention, the concrete block to be tested is placed on the storage platform 18, and the concrete block is closely attached to the inner wall of the storage platform 18; the drilling motor 15 is turned on to rotate the drill barrel 17, and the lifting motor 1 is turned on at the same time. By engaging and rotating with the circular gear A10, the circular gear B11 drives the transmission screw A12 to rotate, thereby driving the lifting block 13 to complete the lifting action, and adjusting the height of the drill barrel 17 at all times. During the drilling and sampling process, the drill barrel 17 gradually penetrates downward from the upper surface of the concrete block until it is drilled through, and the lifting motor 1 is started in the reverse direction to retract the drill barrel 17 upward and gradually withdraw it from the concrete; when the drill barrel 17 reaches a certain height , unscrew the fastening bolts and remove the drill barrel 17 from the motor shaft B16 to take samples. After sampling is completed, install the drill barrel 17 back to its original position; push the clamping moving assembly left and right by moving the roller 22 to adjust the left and right position of the drill barrel 17 relative to the concrete block on the storage table 18; turn the two shaking handles 23 in the same direction to make the transmission screw B19 drive the storage table 18 forward or backward to adjust the drilling position of the drill barrel 17 on the concrete block placed on the storage table 18. After adjusting the position, repeat the above sampling steps to obtain multiple groups of test samples; after sampling is completed, pull out the drawer 7 from the base 6 to clean up the concrete debris.

[0041] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A concrete strength testing device, characterized in that: The invention comprises a lifting motor (1), a top plate (2), a support column (3), a middle plate (4), a support plate (5), a base (6), a gear box housing (8), a motor shaft A (9), a circular gear A (10), a circular gear B (11), a transmission screw A (12), a lifting block (13), a first guide rod (14), a drilling motor (15), a storage platform (18), a transmission screw B (19), a side plate (20), an ear plate (21), a movable roller (22), a crank handle (23), a transmission screw C (24), a mounting plate (26), a second guide rod (27), an L-shaped plate (28) and a clamping plate (29); The lifting motor (1) is installed in the middle of the top plate (2), the four corners of the top plate (2) are fixedly connected to the support column (3) by bolt pairs, the lower end of the support column (3) is fixedly connected to the four corners of the middle plate (4), the side of the middle plate (4) is fixedly connected with the support plate (5), and the support plate (5) is fixedly connected to the base (6); a gear box is installed below the top plate (2), and the gear box includes a gear box housing (8), a motor shaft A (9), a circular gear A (10), a circular gear B (11) and a transmission screw A (12); the lower end of the motor shaft A (9) is inserted into the bottom surface of the gear box housing (8) to form a rotation connection, and a circular gear A (10) is provided at the lower part of the motor shaft A (9), and the two sides of the circular gear A (10) are respectively connected to the two circular gears B (11) meshing, the circular gear B (11) is arranged on the transmission screw A (12), the transmission screw A (12) penetrates the top plate (2), the gear box housing (8), and the middle plate (4) to form a rotation connection, and the transmission screw A (12) is provided with a thread between the gear box housing (8) and the middle plate (4); the lifting block (13) is penetrated by the transmission screw A (12), and the two are connected by a thread; a first guide rod (14) is fixedly connected between the gear box housing (8) and the middle plate (4), and the first guide rod (14) penetrates the lifting block (13) to form a sliding connection; a drilling motor (15) is installed in the middle of the lifting block (13); a clamping moving assembly is placed above the base (6), and the clamping moving assembly includes a storage table (1 8), transmission screw B (19), side plate (20), ear plate (21), moving roller (22), shaking handle (23), transmission screw C (24), clamping motor (25), mounting plate (26), second guide rod (27), L-shaped plate (28) and clamping plate (29); a square hole is provided in the middle of the bottom of the storage platform (18) to form a boss, and the left and right sides of the storage platform (18) are respectively connected with the transmission screw B (19) through two screw holes, and the unthreaded parts at both ends of the transmission screw B (19) are inserted into the side plate (20) to form a rotation connection, and a shaking handle (23) is installed at the front end of the transmission screw B (19); two ear plates (21) are fixedly connected to the top of the side plate (20), and the outer side of the ear plate (21) is rotatably connected to the moving roller. The roller (22) is provided with a transmission screw C (24) on each of the left and right sides of the bottom of the storage platform (18) through two bottom plates for rotation connection. The transmission screw C (24) is rotatably connected to the mounting plate (26) on both sides. The transmission screw C (24) is provided with a thread between the bottom plate of the storage platform (18) and the mounting plate (26). The thread directions of the transmission screw C (24) on the front and rear sides of the storage platform (18) are opposite. The thread penetrates the bottom of the L-shaped plate (28) to form a threaded connection. A second guide rod (27) is inserted in the middle of the L-shaped plate (28) to form a sliding connection. The two ends of the second guide rod (27) are respectively fixedly connected to the storage platform (18) and the mounting plate (26). The top of the L-shaped plate (28) is fixedly connected to one end thereof facing the storage platform (18).

2. A concrete strength detection device according to claim 1, characterized in that: The base (6) comprises a base shell (601), a drawer opening (602), a roller track (603), a drawer slide (604) and an opening (605); a square drawer opening (602) is provided on the left side of the base shell (601), and the drawer opening (602) is connected to the drawer slide (604) inside the base shell (601); roller tracks (603) are provided in left and right directions above the base shell (601), and the roller tracks (603) form a sliding connection with the moving roller (22) of the clamping moving component; an opening (605) is provided at the upper front portion of the base shell (601); and the shaking handle (23) passes through the opening (605).

3. A concrete strength detection device according to claim 2, characterized in that: A drawer (7) is placed in the base (6), the drawer (7) is slidably connected to the drawer slide (604), and the drawer (7) is provided with a handle on the outside of the base (6).

4. A concrete strength testing device according to claim 1, characterized in that: The thread directions of the two transmission screws A (12) in the gear box are opposite; the thread directions of the parts where the lifting block (13) is threadedly connected to the transmission screw A (12) are also opposite.

5. A concrete strength testing device according to claim 1, characterized in that: The drilling motor (15) leads out a motor shaft B (16), and the end of the motor shaft B (16) is connected to a drill tube (17) through a bolt pair.

6. A concrete strength testing device according to claim 5, characterized in that: The length from the top of the drilling motor (15) to the bottom of the drill tube (17) is less than the distance from the upper end surface of the middle plate (4) to the bottom plate of the drawer (7).

7. A concrete strength testing device according to claim 1, characterized in that: The end of the transmission screw C (24) is fixedly connected to the rotating shaft of the clamping motor (25), and the clamping motor (25) is installed on the outside of the mounting plate (26).

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