Cement fracture resistance and compression resistance testing machine

Abstract

The utility model relates to the technical field of cement detection, in particular to a cement fracture resistance and compression resistance testing machine. Comprising an explosion-proof glass cover, a rotating seat, a testing mechanism, a transmission assembly and two supports, a portal frame is arranged at the upper end between the two supports; mounting shafts are connected to the two ends of the rotating seat, and the rotating seat is rotationally mounted between the two supports through the mounting shafts at the two ends of the rotating seat; the testing mechanism comprises a pressing plate, a pressing rod and a downward pressing assembly; the transmission assembly comprises a rack, a gear ring, a ratchet wheel and a pawl. And the explosion-proof glass cover is arranged right above the placing table. According to the technical scheme, chippings generated in the testing process can be automatically cleaned after testing work is finished, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cement detection, in particular to a cement flexural and compressive strength testing machine. Background Art

[0002] A cement flexural and compressive strength testing machine is a test device used to detect the flexural and compressive strengths of cement mortar. It has a compact structure and is easy to operate, and is an essential device for cement plants, construction engineering units, quality inspection stations, etc.

[0003] In the prior art, when performing compressive tests on cement materials, it usually causes them to break or crush, and the generated debris remains on the workbench, requiring operators to manually clean it. The operation is cumbersome and will also affect the test efficiency for continuous testing of multiple test pieces. Summary of the Utility Model

[0004] The purpose of the utility model is to propose a cement flexural and compressive strength testing machine for the problems existing in the background art.

[0005] The technical solution of the utility model, a cement flexural and compressive strength testing machine, includes:

[0006] Two side-by-side arranged supports, with a gantry installed at the upper end between the two supports;

[0007] A rotating seat, both ends of the rotating seat are connected with mounting shafts, and the rotating seat is rotationally installed between the two supports through the mounting shafts at its two ends;

[0008] A testing mechanism, the testing mechanism includes a pressing plate, a pressing rod and a downward pressing assembly. The pressing plate is slidably installed on the gantry, and a power assembly for driving the pressing plate to lift is installed on the gantry. The pressing rod is vertically installed at the bottom end of the pressing plate, and the downward pressing assembly is installed at the bottom end of the pressing rod;

[0009] A transmission assembly, the transmission assembly includes a rack, a toothed ring, a ratchet wheel and a pawl. The toothed ring is rotationally installed on the side of the support, the pawl is installed on the toothed ring, the ratchet wheel is located inside the toothed ring and is connected with the mounting shaft, the rack is meshed with the toothed ring, and a connecting frame is fixed between the rack and the pressing plate;

[0010] An explosion-proof glass cover is arranged directly above the placement table, and the pressing rod movably penetrates through the explosion-proof glass cover.

[0011] Preferably, two placement tables are slidably installed on the rotating seat, and a driving assembly for driving the two placement tables to approach or move away from each other is installed on the rotating seat.

[0012] Preferably, the driving component includes a bidirectional lead screw and a knob. The bidirectional lead screw is rotatably installed on the rotating base, the knob is arranged at the end of the bidirectional lead screw, connecting sliders are connected to both placing platforms, sliding holes for the two connecting sliders to slide are formed in the rotating base, and both connecting sliders are in threaded connection with the bidirectional lead screw.

[0013] Preferably, the pressing-down component includes a U-shaped frame, a rotating part, and multiple pressing heads. The U-shaped frame is connected to the pressing rod, the rotating part is rotatably installed on the U-shaped frame, the multiple pressing heads are detachably installed on the rotating part, a wing bolt is in threaded connection with the U-shaped frame, and multiple positioning grooves are formed in the rotating part. The multiple positioning grooves are arranged in one-to-one correspondence with the multiple pressing heads.

[0014] Preferably, the power component includes a driving mechanism and a threaded rod. The driving mechanism is installed on the gantry for driving the threaded rod to rotate. The pressing plate is in threaded connection with the threaded rod. A guiding slide bar is arranged on one side of the gantry away from the threaded rod, and the pressing plate is slidably arranged on the guiding slide bar.

[0015] Preferably, the power component is a hydraulic cylinder.

[0016] Preferably, a waste box is arranged between the two supports.

[0017] Preferably, a high-definition camera is installed on one side of the gantry.

[0018] Preferably, a pressure sensor is installed at the upper end of the pressing rod, and the pressing rod is movably connected to the pressing plate.

[0019] Compared with the prior art, the utility model has the following beneficial technical effects:

[0020] 1. By arranging the explosion-proof glass cover in this technical solution, it can prevent the crushed debris from splashing outwards, so as to improve the safety during the test.

[0021] 2. During the process of driving the pressing-down component to move upwards, the rotating base can be driven to flip 180 degrees, so that the fragments on the rotating base can automatically fall off, thus having the function of automatically cleaning the debris. Its structure is novel and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 and Figure 2 are both structural schematic diagrams of the utility model.

[0023] Figure 3 is the structural schematic diagram of the pressing-down component in the utility model.

[0024] Figure 4 is Figure 1 the partial enlarged structural schematic diagram of the A position of

[0025] Figure 5 is Figure 2Schematic diagram of the partial enlarged structure at position B

[0026] Reference numerals: 1, support; 2, explosion-proof glass cover; 3, gantry; 4, waste bin; 5, pressing plate; 6, rotating seat; 61, mounting shaft; 601, sliding hole; 7, placing table; 8, rack; 9, connecting frame; 10, pressing rod; 111, driving mechanism; 112, threaded rod; 12, guiding slide bar; 13, connecting slider; 141, bidirectional lead screw; 142, knob; 15, high-definition camera; 16, U-shaped frame; 17, rotating part; 171, positioning groove; 18, wing nut; 19, pressing head; 20, gear ring; 21, ratchet; 22, ratchet pawl; 23, pressure sensor; 241, connecting plate; 242, guiding rod; 243, limiting block Detailed implementation manners

[0027] Embodiment 1

[0028] As Figures 1 - 5 shown, the cement flexural and compressive strength testing machine proposed in this embodiment includes an explosion-proof glass cover 2, a rotating seat 6, a testing mechanism, a transmission assembly, and two supports 1

[0029] The two supports 1 are arranged side by side, and a gantry 3 is provided at the upper end between the two supports 1; a high-definition camera 15 is installed on one side of the gantry 3, and the high-definition camera 15 is provided for photographing and recording the testing process; both ends of the rotating seat 6 are connected with mounting shafts 61, and the rotating seat 6 is rotationally installed between the two supports 1 through the mounting shafts 61 at both ends

[0030] The testing mechanism includes a pressing plate 5, a pressing rod 10, and a downward pressing assembly. The pressing plate 5 is slidably installed on the gantry 3, and a power assembly for driving the pressing plate 5 to lift is installed on the gantry 3. The power assembly is a hydraulic cylinder (not shown). The pressing rod 10 is vertically installed at the bottom end of the pressing plate 5, and the downward pressing assembly is installed at the bottom end of the pressing rod 10

[0031] A pressure sensor 23 is installed at the upper end of the pressing rod 10. The pressing rod 10 is movably connected to the pressing plate 5. A connecting plate 241 is connected to the pressing rod 10, and a guiding rod 242 is connected to the pressing plate 5. The bottom end of the guiding rod 242 movably penetrates through the connecting plate 241 and is connected with a limiting block 243. The installed pressure sensor 23 can test the change of pressure data

[0032] The transmission assembly includes a rack 8, a gear ring 20, a ratchet 21, and a ratchet pawl 22. The cooperation of the ratchet 21 and the ratchet pawl 22 enables the ratchet 21 to rotate only in one direction. The gear ring 20 is rotationally installed on the side of the support 1. The ratchet pawl 22 is installed on the gear ring 20. The ratchet 21 is located inside the gear ring 20 and is connected to the mounting shaft 61. The rack 8 is meshed with the gear ring 20, and a connecting frame 9 is fixed between the rack 8 and the pressing plate 5

[0033] A waste box 4 is arranged between two supports 1, and the waste box 4 is used to collect the crushed pieces.

[0034] An explosion-proof glass cover 2 is arranged directly above the placement table 7. The arranged explosion-proof glass cover 2 is used to block the splashing of debris, ensure the safety of the test, and also avoid polluting the surrounding working environment. The pressure rod 10 movably penetrates through the explosion-proof glass cover 2.

[0035] In this embodiment, during the test, the test piece, the cement board, is placed on the rotating seat 6, and then the power assembly is used to drive the pressing plate 5 to move downward, that is, drive the downward pressing assembly to move, so as to test the compressive capacity of the cement board. During this process, the explosion-proof glass cover 2 is driven to move downward. Before the downward pressing assembly contacts the test piece, the explosion-proof glass cover 2 first covers the upper end of the rotating seat 6. The setting of the explosion-proof glass cover 2 can block the broken pieces generated during the test from splashing outwards to improve the safety of the test. Through the setting of the transmission assembly, the ratchet wheel 21 will not be driven to rotate when the pressing plate 5 is driven to move downward. After the test work is completed, the power assembly drives the downward pressing assembly to move upward. At this time, the ratchet wheel 21 can be driven to rotate. The rotation of the ratchet wheel 21 drives the mounting shaft 61 and the rotating seat 6 to rotate. Since there is a certain gap between the bottom end of the downward pressing assembly and the rotating seat 6 after the test piece breaks, and the explosion-proof glass cover 2 is movably connected to the pressure rod 10, the rotating seat 6 can be driven to rotate synchronously during the process of driving the downward pressing assembly to move upward. When the downward pressing assembly moves to the upper limit position, the rotating seat 6 just rotates 180 degrees. During the rotation of the rotating seat 6, the debris on its surface falls downward under the action of gravity, making it have the function of automatically cleaning the debris.

[0036] Embodiment 2

[0037] As Figure 1 and Figure 2 shown, the cement flexural and compressive testing machine proposed in this embodiment, compared with Embodiment 1, in this embodiment, two placement tables 7 are slidably mounted on the rotating seat 6, and a driving assembly for driving the two placement tables 7 to approach or move away from each other is mounted on the rotating seat 6. The driving assembly includes a bidirectional lead screw 141 and a knob 142. The bidirectional lead screw 141 is rotatably mounted on the rotating seat 6, and the knob 142 is arranged at the end of the bidirectional lead screw 141. Connecting sliders 13 are connected to both of the two placement tables 7, and sliding holes 601 for the two connecting sliders 13 to slide are formed on the rotating seat 6. Both of the two connecting sliders 13 are threadedly connected to the bidirectional lead screw 141. By setting the driving assembly, the two placement tables 7 can be driven to approach or move away from each other, so as to switch the support state of the test piece (that is, two methods of flat support and suspended support).

[0038] The pressing component includes a U-shaped frame 16, a rotating member 17, and a plurality of pressing heads 19. The U-shaped frame 16 is connected to the pressing rod 10. The rotating member 17 is rotatably installed on the U-shaped frame 16. The plurality of pressing heads 19 are detachably installed on the rotating member 17. A wing bolt 18 is threadedly connected to the U-shaped frame 16. A plurality of positioning grooves 171 are formed on the rotating member 17. The plurality of positioning grooves 171 are arranged in one-to-one correspondence with the plurality of pressing heads 19. By means of the plurality of pressing heads 19 installed on the rotating member 17, it is convenient to replace different pressing heads 19 to perform testing work on the test piece. In summary, the technical solution of the present invention can adjust two support states of plank support and suspended support, and can facilitate the rapid replacement of the pressing heads 19 for testing. It can be applied to testing work in different environments and only needs to be carried out on one device. Its structure is compact and its applicability is strong.

[0039] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to this. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. Cement flexural and compressive strength testing machine, characterized in that, Comprising: Two supports (1) arranged side by side, with a gantry (3) provided at the upper end between the two supports (1); A rotating seat (6), both ends of the rotating seat (6) are connected with mounting shafts (61), and the rotating seat (6) is rotatably mounted between the two supports (1) through the mounting shafts (61) at its two ends; A testing mechanism, the testing mechanism includes a pressing plate (5), a pressing rod (10) and a downward pressing assembly. The pressing plate (5) is slidably mounted on the gantry (3), and a power assembly for driving the pressing plate (5) to lift and lower is mounted on the gantry (3). The pressing rod (10) is vertically mounted at the bottom end of the pressing plate (5), and the downward pressing assembly is mounted at the bottom end of the pressing rod (10); A transmission assembly, the transmission assembly includes a rack (8), a toothed ring (20), a ratchet wheel (21) and a ratchet pawl (22). The toothed ring (20) is rotatably mounted on the side of the support (1), the ratchet pawl (22) is mounted on the toothed ring (20), the ratchet wheel (21) is located inside the toothed ring (20) and is connected with the mounting shaft (61), the rack (8) is meshed and connected with the toothed ring (20), and a connecting frame (9) is fixed between the rack (8) and the pressing plate (5); An explosion-proof glass cover (2), the explosion-proof glass cover (2) is arranged directly above the placing table (7), and the pressing rod (10) movably penetrates through the explosion-proof glass cover (2).

2. The cement flexural and compressive strength testing machine according to claim 1, wherein Two placing tables (7) are slidably mounted on the rotating seat (6), and a driving assembly for driving the two placing tables (7) to approach or move away from each other is mounted on the rotating seat (6).

3. The cement flexural and compressive strength testing machine according to claim 2, characterized in that, The driving assembly includes a bidirectional lead screw (141) and a knob (142). The bidirectional lead screw (141) is rotatably mounted on the rotating seat (6), the knob (142) is arranged at the end of the bidirectional lead screw (141), connecting sliders (13) are connected to both of the two placing tables (7), sliding holes (601) for the two connecting sliders (13) to slide are formed on the rotating seat (6), and both of the two connecting sliders (13) are threadedly connected with the bidirectional lead screw (141).

4. The cement flexural and compressive strength testing machine according to claim 3, characterized in that, The downward pressing assembly includes a U-shaped frame (16), a rotating member (17) and a plurality of pressing heads (19). The U-shaped frame (16) is connected with the pressing rod (10), the rotating member (17) is rotatably mounted on the U-shaped frame (16), the plurality of pressing heads (19) are detachably mounted on the rotating member (17), a wing bolt (18) is threadedly connected to the U-shaped frame (16), and a plurality of positioning grooves (171) are formed on the rotating member (17), and the plurality of positioning grooves (171) are arranged in one-to-one correspondence with the plurality of pressing heads (19).

5. The cement flexural and compressive strength testing machine according to claim 1, characterized in that, The power assembly includes a driving mechanism (111) and a threaded rod (112). The driving mechanism (111) is mounted on the gantry (3) for driving the threaded rod (112) to rotate. The pressing plate (5) is threadedly connected with the threaded rod (112). A guiding slide bar (12) is arranged on one side of the gantry (3) far away from the threaded rod (112), and the pressing plate (5) is slidably arranged on the guiding slide bar (12).

6. The cement flexural and compressive strength testing machine according to claim 1, wherein, The power assembly is a hydraulic cylinder.

7. The cement flexural and compressive strength testing machine according to claim 1, wherein, A waste box (4) is arranged between the two supports (1).

8. The cement flexural and compressive strength testing machine according to claim 1, characterized in that, A high-definition camera (15) is mounted on one side of the gantry (3).

9. The cement flexural and compressive strength testing machine according to claim 1, characterized in that, A pressure sensor (23) is mounted at the upper end of the pressing rod (10), and the pressing rod (10) is movably connected with the pressing plate (5).

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