A cement flexural strength testing machine
By designing limiting and protective components, the problems of specimen deviation from the fixture center and debris splashing in the cement flexural strength testing machine were solved, thus achieving both accurate test data and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN BUILDING MATERIALS RES & DESIGN INST CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-26
AI Technical Summary
Existing cement flexural strength testing machines are prone to specimens deviating from the center of the fixture when manually feeding, resulting in uneven stress. Furthermore, when specimens break, debris flies out and pollutes the environment, increasing the difficulty of cleaning.
A limiting component and a protective component were designed. The limiting component holds the specimen in the center by using a limiting plate and a spring, while the protective component seals the debris with an adjustable protective box, thus solving the problems of specimen positioning and debris splashing, respectively.
Ensuring the accuracy of test data, preventing debris from polluting the environment, simplifying the cleaning process, and improving the operational safety and efficiency of the testing machine.
Smart Images
Figure CN224416622U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cement products technology, and in particular to a cement flexural strength testing machine. Background Technology
[0002] Cement products are products made by using cement as the main binder, combined with aggregates such as sand, gravel, and steel bars, and manufactured through prefabrication or cast-in-place processes. They are widely used in construction, municipal engineering, transportation, and other fields, covering a wide range of types, including cement pipes (such as water pipes and drainage pipes), cement poles and columns (such as utility poles and piles), bridge components (such as highway and railway bridge components), cement bricks (such as paving bricks and decorative bricks), cement tiles (such as flat tiles and ridge tiles), and cement boards (such as hollow boards and sandwich panels). They play important roles in supporting, protecting, and decorating in different scenarios.
[0003] In the production process of cement products, flexural strength testing is required, thus flexural strength testing machines are needed. Currently, most tests are conducted by manually placing the specimens into the fixture. However, manual loading is prone to errors. When the specimen is not centered in the fixture, it will cause uneven stress, which will affect the test results. Moreover, it lacks a protective mechanism. When the specimen breaks, it will generate a large amount of debris. The debris will not only pollute the environment but also increase the difficulty of cleaning. Therefore, this application proposes a cement flexural strength testing machine to meet the needs. Utility Model Content
[0004] In order to overcome the shortcomings of existing technologies, such as manual feeding which can easily cause the specimen to be out of the center of the fixture and the debris generated when the specimen breaks can be splashed to the outside, this utility model provides a cement flexural strength testing machine.
[0005] The technical implementation scheme of this utility model is as follows: a cement flexural strength testing machine includes a base, a clamp for holding the specimen is fixedly connected to the top of the base, limit components are provided on both sides of the clamp, an mounting frame is provided above the clamp, a hydraulic rod is installed on the top of the mounting frame, a pressure block is fixedly connected to the bottom of the hydraulic rod, and a protective component is provided on the outer periphery of the base.
[0006] Optionally, the limiting component includes a limiting plate, a first sliding groove, a connecting groove, and a pull rod. The limiting plate is provided in two sets and is movably connected to both sides of the fixture. The first sliding groove is opened inside the fixture. The connecting groove passes through the inner wall of the first sliding groove on the side away from the center of the fixture. The pull rod is fixedly connected to the inner side of the limiting plate and extends through the connecting groove into the interior of the first sliding groove.
[0007] Optionally, the limiting component further includes a first slider and a first spring. The first slider is fixedly connected to the inner end of the pull rod and slidably connected to the first slide groove. The first spring is sleeved on the outer periphery of the pull rod and its two ends are respectively fixedly connected to the inner wall of the first slider away from the center of the clamp and the inner wall of the first slide groove away from the center of the clamp.
[0008] Optionally, the protective assembly includes a protective box, a silicone strip, a box door, a mounting plate, and a lifting groove. The protective box and the box door are both composed of an aluminum alloy frame and tempered glass, and the protective box is fixedly connected to the top of the base. The top and bottom of the protective box are provided with slots that are adapted to the size of the clamp. The silicone strip is fixedly connected to the inner wall of the slot. Two sets of mounting plates are provided and fixedly connected to the front side of the protective box. The lifting groove is opened on the inner surface of the mounting plate and is adapted to the size of the box door.
[0009] Optionally, the protective assembly further includes fixing holes, mounting bases, through slots, and fixing rods. The fixing holes are formed at the top and bottom of the inner surface of the mounting plate. The mounting base is fixedly connected to the bottom front side of the door. The through slots are formed on both sides of the mounting base. The fixing rods are movably connected to the through slots and are adapted to the size of the fixing holes.
[0010] Optionally, the protective assembly further includes a second slide groove, a second slider, and a second spring. The second slide groove is formed on the front surface of the mounting base and its end away from the center of the mounting base is connected to a through groove. The second slider is fixedly connected to the end of the fixing rod near the center of the mounting base and slidably connected to the second slide groove. The second spring is installed inside the second slide groove and its two ends are respectively fixedly connected to the inner wall of the second slider near the center of the mounting base and the inner wall of the second slide groove near the center of the mounting base.
[0011] This utility model has the following advantages:
[0012] 1. This utility model, by setting a limiting component, pulls the limiting plates to both sides, causing the first slider to slide outward along the first groove via the pull rod and compress the first spring. When the distance between the two sets of limiting plates is greater than the length of the specimen, the specimen is placed inside the fixture and positioned between the two sets of limiting plates. Then, the limiting plates are released, and the first spring rebounds, causing the limiting plates to move inward via the first slider and the pull rod. When the limiting plates contact both ends of the specimen, the rebound force generated by the first spring can clamp the specimen through the limiting plates and keep it in the center of the fixture. This design allows the device to limit specimens of different sizes, keeping them in the center of the fixture during the test, effectively ensuring the accuracy of the test data.
[0013] 2. This utility model, by incorporating a protective component, allows the second slider to slide along the second groove towards the center of the mounting base, causing the fixed rod to move synchronously and compress the second spring. When the fixed rod moves out of the bottom fixing hole, the box door slides upward along the lifting groove until the fixed rod and the top fixing hole are on the same axis. Then, the second slider is released, the second spring rebounds, and through the second slider, it moves the fixed rod to both sides of the mounting base. When the fixed rod is inserted into the top fixing hole, the box door is fixed at the current height, thus completing the opening of the protective box. Repeating the above operation in reverse will close the box door. This design enables the device to block debris generated by the test specimen, effectively preventing debris from splashing into the outside world and causing environmental pollution. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the limiting component structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the protective component structure of this utility model. Figure 1 ;
[0017] Figure 4 This is a schematic diagram of the protective component structure of this utility model. Figure 2 .
[0018] The meanings of the reference numerals in the figure are as follows: 1. Base; 2. Clamp; 3. Limiting component; 31. Limiting plate; 32. First slide groove; 33. Connecting groove; 34. Pull rod; 35. First slider; 36. First spring; 4. Mounting bracket; 5. Hydraulic rod; 6. Pressure block; 7. Protective component; 71. Protective box; 72. Silicone strip; 73. Box door; 74. Mounting plate; 75. Lifting groove; 76. Fixing hole; 77. Mounting seat; 78. Through groove; 79. Fixing rod; 710. Second slide groove; 711. Second slider; 712. Second spring. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, a further detailed description of this utility model will be provided below in conjunction with the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside that appear or will appear in this document are based solely on the accompanying drawings and are not intended to specifically limit this utility model.
[0020] A cement flexural strength testing machine includes a base 1, a clamp 2 for holding specimens is fixedly connected to the top of the base 1, limit components 3 are provided on both sides of the clamp 2, a mounting frame 4 is provided above the clamp 2, a hydraulic rod 5 is installed on the top of the mounting frame 4, a pressure block 6 is fixedly connected to the bottom of the hydraulic rod 5, and a protective component 7 is provided on the outer periphery of the base 1.
[0021] It should be noted that the limiting component 3 can limit specimens of different sizes, so that the center of the specimen can be directly below the loading roller, effectively ensuring the accuracy of the test data. The protective component 7 can block the debris generated when the specimen breaks, effectively preventing the debris from splashing into the outside world and causing pollution to the environment.
[0022] like Figure 2 As shown, the limiting component 3 includes a limiting plate 31, a first sliding groove 32, a connecting groove 33, and a pull rod 34. The limiting plate 31 is provided with two sets and is movably connected to both sides of the clamp 2. The first sliding groove 32 is opened inside the clamp 2. The connecting groove 33 passes through the inner wall of the first sliding groove 32 on the side away from the center of the clamp 2. The pull rod 34 is fixedly connected to the inner side of the limiting plate 31 and extends through the connecting groove 33 into the interior of the first sliding groove 32.
[0023] It should be noted that the position of the limiting plate 31 can be adjusted by moving the pull rod 34 along the connecting groove 33, so that it can limit the specimens of different sizes.
[0024] like Figure 2 As shown, the limiting component 3 also includes a first slider 35 and a first spring 36. The first slider 35 is fixedly connected to the inner end of the pull rod 34 and slidably connected to the first slide groove 32. The first spring 36 is sleeved on the outer periphery of the pull rod 34 and its two ends are respectively fixedly connected to the inner wall of the first slider 35 away from the center of the clamp 2 and the inner wall of the first slide groove 32 away from the center of the clamp 2.
[0025] It should be noted that pulling the limiting plate 31 outward will cause the first slider 35 to slide outward along the first slide groove 32 via the pull rod 34 and squeeze the first spring 36. Releasing the limiting plate 31 will cause the first spring 36 to rebound, which will then cause the limiting plate 31 to move inward via the first slider 35 and the pull rod 34.
[0026] like Figure 1 and Figure 3As shown, the protective component 7 includes a protective box 71, a silicone strip 72, a box door 73, a mounting plate 74, and a lifting groove 75. The protective box 71 and the box door 73 are both composed of an aluminum alloy frame and tempered glass. The protective box 71 is fixedly connected to the top of the base 1. The top and bottom of the protective box 71 are provided with slots that are adapted to the size of the clamp 2. The silicone strip 72 is fixedly connected to the inner wall of the slot. The mounting plate 74 is provided with two sets and is fixedly connected to the front side of the protective box 71. The lifting groove 75 is opened on the inner surface of the mounting plate 74 and is adapted to the size of the box door 73.
[0027] It should be noted that the protective box 71 can be opened or closed by sliding the box door 73 along the lifting groove 75.
[0028] like Figure 3 and Figure 4 As shown, the protective component 7 also includes a fixing hole 76, a mounting base 77, a through groove 78, and a fixing rod 79. The fixing hole 76 is opened at the top and bottom of the inner surface of the mounting plate 74. The mounting base 77 is fixedly connected to the bottom front side of the door 73. The through groove 78 is opened on both sides of the mounting base 77. The fixing rod 79 is movably connected to the through groove 78 and is adapted to the size of the fixing hole 76.
[0029] It should be noted that the door 73 can be raised or lowered by removing the fixing rod 79 from the fixing hole 76, and the door 73 can be fixed at the current height by inserting the fixing rod 79 into the fixing hole 76.
[0030] like Figure 4 As shown, the protective component 7 also includes a second slide groove 710, a second slider 711, and a second spring 712. The second slide groove 710 is formed on the front surface of the mounting base 77, and one end away from the center of the mounting base 77 is connected to the through groove 78. The second slider 711 is fixedly connected to the end of the fixing rod 79 near the center of the mounting base 77 and slidably connected to the second slide groove 710. The second spring 712 is installed inside the second slide groove 710 and its two ends are respectively fixedly connected to the inner wall of the second slider 711 near the center of the mounting base 77 and the inner wall of the slide groove 710 near the center of the mounting base 77.
[0031] It should be noted that sliding the second slider 711 along the second slide groove 710 toward the center of the mounting base 77 will drive the fixed rod 79 to move synchronously and compress the second spring 712. Releasing the second slider 711 will cause the second spring 712 to rebound, which will drive the fixed rod 79 to move to both sides of the mounting base 77 through the second slider 711.
[0032] In a specific application scenario, firstly, slide the second slider 711 along the second slide groove 710 toward the center of the mounting base 77, causing the fixing rod 79 to move synchronously and compress the second spring 712. When the fixing rod 79 moves out of the bottom fixing hole 76, slide the box door 73 upward along the lifting groove 75 until the fixing rod 79 and the top fixing hole 76 are on the same axis. Then, release the second slider 711, and the second spring 712 rebounds and drives the fixing rod 79 to move to both sides of the mounting base 77 through the second slider 711. When the fixing rod 79 is inserted into the top fixing hole 76, the box door 73 can be fixed at the current height, thus completing the opening of the protective box 71. Then, pull it to both sides. The limiting plate 31 causes the first slider 35 to slide outward along the first slide groove 32 via the pull rod 34, and compresses the first spring 36. When the distance between the two sets of limiting plates 31 is greater than the length of the specimen, the specimen is placed inside the fixture 2 and positioned between the two sets of limiting plates 31. Then the limiting plate 31 is released, and the first spring 36 rebounds and drives the limiting plate 31 to move inward through the first slider 35 and the pull rod 34. When the limiting plate 31 contacts both ends of the specimen, the rebound force generated by the first spring 36 can clamp the specimen through the limiting plate 31 and position it in the center of the fixture 2. At this time, the chamber door 73 is closed and the hydraulic rod 5 is activated to drive the pressure block 6 downward to start the test.
[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A cement flexural strength testing machine, comprising a base (1), characterized in that, The base (1) is fixedly connected to a clamp (2) for holding the specimen. Limiting components (3) are provided on both sides of the clamp (2). A mounting frame (4) is provided above the clamp (2). A hydraulic rod (5) is installed on the top of the mounting frame (4). A pressure block (6) is fixedly connected to the bottom of the hydraulic rod (5). A protective component (7) is provided on the outer periphery of the base (1).
2. A cement flexural strength testing machine according to claim 1, characterized in that, The limiting component (3) includes a limiting plate (31), a first sliding groove (32), a connecting groove (33), and a pull rod (34). The limiting plate (31) is provided in two sets and is movably connected to both sides of the clamp (2). The first sliding groove (32) is opened inside the clamp (2). The connecting groove (33) passes through the inner wall of the first sliding groove (32) away from the center of the clamp (2). The pull rod (34) is fixedly connected to the inner side of the limiting plate (31) and extends through the connecting groove (33) into the first sliding groove (32).
3. A cement flexural strength testing machine according to claim 2, characterized in that, The limiting component (3) further includes a first slider (35) and a first spring (36). The first slider (35) is fixedly connected to the inner end of the pull rod (34) and slidably connected to the first groove (32). The first spring (36) is sleeved on the outer periphery of the pull rod (34) and its two ends are respectively fixedly connected to the inner wall of the first slider (35) away from the center of the clamp (2) and the inner wall of the first groove (32) away from the center of the clamp (2).
4. A cement flexural strength testing machine according to claim 1, characterized in that, The protective assembly (7) includes a protective box (71), a silicone strip (72), a box door (73), a mounting plate (74), and a lifting groove (75). The protective box (71) and the box door (73) are both made of aluminum alloy frame and tempered glass. The protective box (71) is fixedly connected to the top of the base (1). The top and bottom of the protective box (71) are provided with empty grooves that are adapted to the size of the clamp (2). The silicone strip (72) is fixedly connected to the inner wall of the empty groove. The mounting plate (74) is provided with two sets and is fixedly connected to the front side of the protective box (71). The lifting groove (75) is opened on the inner surface of the mounting plate (74) and is adapted to the size of the box door (73).
5. A cement flexural strength testing machine according to claim 4, characterized in that, The protective component (7) also includes a fixing hole (76), a mounting base (77), a through groove (78), and a fixing rod (79). The fixing hole (76) is opened at the top and bottom of the inner surface of the mounting plate (74). The mounting base (77) is fixedly connected to the bottom front side of the door (73). The through groove (78) is opened on both sides of the mounting base (77). The fixing rod (79) is movably connected to the through groove (78) and is adapted to the size of the fixing hole (76).
6. A cement flexural strength testing machine according to claim 5, characterized in that, The protective component (7) further includes a second slide groove (710), a second slider (711), and a second spring (712). The second slide groove (710) is opened on the front surface of the mounting base (77) and one end away from the center of the mounting base (77) is connected to the through groove (78). The second slider (711) is fixedly connected to one end of the fixing rod (79) near the center of the mounting base (77) and slidably connected to the second slide groove (710). The second spring (712) is installed inside the second slide groove (710) and its two ends are respectively fixedly connected to the inner wall of the second slider (711) near the center of the mounting base (77) and the inner wall of the second slide groove (710) near the center of the mounting base (77).