A compression-resistant clamp for construction engineering detection

Abstract

The utility model relates to a kind of compression-resistant clamps for construction engineering detection, comprising: fixed disc, it is set in the bottom side of the hydraulic equipment for detecting cement block, the bottom end of fixed disc is provided with rotating disc, four sliding grooves evenly distributed along its circumferential direction are set in the inside of fixed disc, each sliding groove inside is slidably provided with connecting rod.The utility model relates to the technical field of building cement test block detection equipment.A kind of compression-resistant clamps for construction engineering detection, through the coarse adjustment of rotating disc and the fine adjustment of adjusting screw, four supporting plates stably support the bottom of cement test block, while the inclined surface of four mounting blocks wraps and clamps four bottom edges of test block.This four-side inclined clamping combined with bottom support provides stable and reliable fixation for cement test block, ensuring that it does not slip or eccentric when bearing upward pressure, thereby ensuring the accuracy and reliability of compressive strength test data.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment for building cement test blocks, and in particular to a pressure-resistant clamp for testing building engineering. Background Technology

[0002] In building construction, the compressive strength of materials such as cement and concrete is a key indicator for measuring their structural performance. This test is usually performed by a hydraulic pressure testing machine.

[0003] Currently, commonly used compression clamps are difficult to quickly and accurately center and fix non-standard sized or slightly deformed test blocks. The adjustment process is cumbersome and time-consuming. Traditional bottom support plates are usually integral or simple linkage type, which cannot simultaneously meet the requirements of independent and precise fine adjustment and wrap-around limit of the four corners of the bottom of the test block. This results in uneven clamping force, and the test block is prone to chipping, slippage or even damage during the compression process. This not only distorts the test results, but also poses certain safety hazards. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure-resistant clamp for building engineering testing, so as to solve the technical problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A pressure-resistant clamp for testing building engineering, comprising:

[0007] A fixed plate is installed on the bottom side of the hydraulic equipment used for testing cement blocks. A rotating plate is installed at the bottom of the fixed plate. Four sliding grooves are evenly distributed around the circumference of the fixed plate. A connecting rod is slidably installed in each sliding groove. A mounting block is installed at the top of the connecting rod. The side wall of the mounting block is set as an inclined surface. A guide groove is opened on the inclined surface. A support plate for supporting the test block is slidably installed in the guide groove. An adjustment component for driving the support plate to move along its length direction is installed in the guide groove.

[0008] An inclined groove is provided inside the rotating disk at a position corresponding to each sliding groove. The end of the inclined groove near the axis of the rotating disk corresponds to the end of the sliding groove, and the bottom end of the connecting rod is inserted into the inside of the inclined groove.

[0009] Furthermore, the top of the connecting rod is provided with a tray, and the two sides of the tray are provided with support blocks. The top of the fixing plate is provided with an extension groove, the bottom of the support block is inserted into the extension groove, and the bottom of the mounting block is provided with a connecting groove that mates with the tray, for inserting the mounting block into the top of the connecting rod.

[0010] Furthermore, the adjustment component includes:

[0011] The adjusting screw is rotatably mounted inside the guide groove, and the end of the support plate inserted into the guide groove has a threaded hole that engages with the adjusting screw.

[0012] Furthermore, the two ends of the adjusting screw are rotatably provided with mounting shaft seats, and the inner wall of the guide groove is provided with a mounting groove for the mounting shaft seats to be inserted and fixed, and the mounting plane of the mounting shaft seats is perpendicular to the inclined surface of the mounting block.

[0013] Furthermore, extension rods are fixedly provided on both sides of the tray, and guide rails are provided on both sides of the mounting block. Two sliders are slidably arranged inside the guide rails, and the two sliders are fixedly connected to the extension rods on both sides respectively.

[0014] Furthermore, a worm gear is rotatably provided at the bottom end of the fixed disk, and a worm wheel groove that cooperates with the worm gear is embedded in the circumferential side of the rotating disk.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. This compressive strength clamp for building engineering testing, through the coarse adjustment of the rotating disc and the fine adjustment of the adjusting screw, allows four support plates to stably support the bottom of the cement test block. At the same time, the inclined surfaces of the four mounting blocks wrap around and clamp the four bottom edges of the test block. This combination of four-sided inclined clamping and bottom support provides stable and reliable fixation for the cement test block, ensuring that it will not slip or become eccentric when subjected to downward pressure from above, thereby ensuring the accuracy and reliability of the compressive strength test data.

[0017] 2. This type of pressure-resistant clamp for building engineering testing has a mounting shaft fixed in the mounting groove on the inner wall of the guide groove. Its mounting plane is perpendicular to the inclined surface of the mounting block and is used to support both ends of the adjusting screw. When the support plate is not under pressure, the mounting shaft provides a stable support point for the adjusting screw, ensuring that its axis position is fixed and it can rotate smoothly. This ensures that the movement direction of the support plate is always parallel to the inclined surface, and the movement is smooth and without interference. When the support plate is under load, the mounting shaft can be slightly displaced through the mounting groove to prevent the load-bearing force from being transmitted to the mounting shaft through the adjusting screw. This avoids the adjusting screw from acting as a carrier of torque, thus achieving the purpose of protecting the adjusting screw. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a structural schematic diagram of a pressure-resistant clamp for building engineering testing according to the present invention.

[0020] Figure 2 This is an exploded view of the rotating disk and fixed disk of a pressure-resistant clamp for building engineering testing according to this utility model.

[0021] Figure 3 This is a schematic diagram of the fixing plate of a pressure-resistant clamp for building engineering testing according to the present invention.

[0022] Figure 4 This is a schematic diagram of the installation block of a pressure-resistant clamp for building engineering testing according to the present invention.

[0023] In the diagram, 1. Fixed disk; 2. Rotating disk; 3. Sliding groove; 4. Connecting rod; 5. Mounting block; 6. Guide groove; 7. Support plate; 8. Adjusting assembly; 81. Adjusting screw; 82. Threaded hole; 83. Mounting shaft seat; 84. Mounting groove; 9. Inclined groove; 10. Tray; 11. Support block; 12. Extension groove; 13. Extension rod; 14. Guide rail; 15. Slider; 16. Worm gear; 17. Worm wheel groove. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example:

[0026] Reference Figure 1 - Figure 4 This utility model discloses a pressure-resistant clamp for testing building engineering, comprising:

[0027] A fixed plate 1 is set on the bottom side of the hydraulic equipment for testing cement blocks. A rotating plate 2 is set at the bottom end of the fixed plate 1. Four sliding grooves 3 are evenly distributed around the circumference of the fixed plate 1. A connecting rod 4 is slidably set inside each sliding groove 3. A mounting block 5 is set at the top of the connecting rod 4. The side wall of the mounting block 5 is set as an inclined surface. A guide groove 6 is set on the inclined surface. A support plate 7 for supporting the test block is slidably set inside the guide groove 6. An adjustment component 8 for driving the support plate 7 to move along its length direction is set inside the guide groove 6.

[0028] An inclined groove 9 is provided inside the rotating disk 2 at a position corresponding to each sliding groove 3. The end of the inclined groove 9 near the axis of the rotating disk 2 corresponds to the end of the sliding groove 3, and the bottom end of the connecting rod 4 is inserted into the inclined groove 9.

[0029] In this embodiment, when in use, the cement test block to be tested is placed in the center of the fixed disk 1. First, the worm 16 is rotated by a tool. The worm 16 drives the worm wheel that meshes with it and is embedded in the circumference of the rotating disk 2, causing the rotating disk 2 to rotate relative to the fixed disk 1.

[0030] The rotation of the rotating disk 2 causes the various inclined grooves 9 inside it to rotate accordingly. Since the bottom end of the connecting rod 4 is inserted into the inclined groove 9, the side wall of the inclined groove 9 will generate a radial thrust on the bottom end of the connecting rod 4. This force drives the connecting rod 4 to slide along the radial sliding groove 3 on the fixed disk 1, so that all the connecting rods 4 and the mounting blocks 5 at their tops move synchronously closer to or further away from the central axis of the fixed disk 1, achieving preliminary centering and positioning, so that the inclined surfaces of the four mounting blocks 5 face each other and surround the four bottom corners of the cement test block.

[0031] After initial positioning, by turning the adjusting screws 81 on each mounting block 5, since the adjusting screws 81 are fixed by the mounting shaft seat 83, and the support plate 7 forms a screw and nut pair with the adjusting screws 81 through the threaded hole 82 at one end, rotating the adjusting screws 81 can drive the support plate 7 to move precisely along the guide groove 6 on the inclined surface of the mounting block 5 until the bottom end of the support plate 7 contacts the bottom end face of the test block;

[0032] The extension rods 13 on both sides of the support plate 7 are connected to the guide rail 14 through the sliding cooperation of the slider 15, which ensures the stability of the translation of the support plate 7 and effectively transmits the shear force generated by the weight of the test block to the mounting block 5, instead of being entirely borne by the adjusting screw 81, thus preventing the screw from deforming or jamming.

[0033] Finally, through coarse adjustment of the rotating disk 2 and fine adjustment of the adjusting screw 81, the four support plates 7 stably support the bottom of the cement block. At the same time, the inclined surfaces of the four mounting blocks 5 wrap around and clamp the four bottom edges of the block. This combination of four-sided inclined clamping and bottom support provides a stable and reliable fixation for the cement block, ensuring that it will not slip or become eccentric when subjected to downward pressure. This ensures the accuracy and reliability of the compressive strength test data. The self-locking characteristic of the worm gear 16 prevents the rotating disk 2 from loosening during the test, further enhancing the stability of the fixture.

[0034] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the top of the connecting rod 4 is provided with a tray 10, and the two sides of the tray 10 are provided with support blocks 11. The top of the fixing plate 1 is provided with an extension groove 12. The bottom end of the support block 11 is inserted into the extension groove 12. The bottom end of the mounting block 5 is provided with a connecting groove that cooperates with the tray 10, which is used to insert the mounting block 5 into the top of the connecting rod 4.

[0035] In this embodiment, the tray 10 is fixed to the top of the connecting rod 4, and the support blocks 11 on both sides are inserted into the extension groove 12 at the top of the fixed plate 1. The mounting block 5 is inserted into the tray 10 through the connecting groove at the bottom. When the connecting rod 4 moves radially in the sliding groove 3, the support blocks 11 slide along the extension groove 12. The support blocks 11 contact the groove wall of the extension groove 12 to bear the torque generated when the connecting rod 4 is pushed, which greatly enhances the rigidity and stability of the overall structure and prevents the connecting rod 4 from deforming or getting stuck due to uneven force.

[0036] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the adjustment component 8 includes:

[0037] The adjusting screw 81 is rotatably disposed inside the guide groove 6, and the end of the support plate 7 inserted into the guide groove 6 has a threaded hole 82 that is threadedly engaged with the adjusting screw 81.

[0038] In this embodiment, the core of the adjustment component 8 is the adjustment screw 81 rotatably disposed in the guide groove 6, which forms a screw-nut pair with the threaded hole 82 in the support plate 7. By turning the adjustment screw 81, the rotational motion is converted into linear motion of the support plate 7 along the length of the guide groove 6 through thread transmission, thereby achieving precise micro-extension of the support plate 7. This allows the fixture to precisely adapt to the support requirements of test blocks of different sizes, ensuring that the support plate 7 is in complete contact with the bottom surface of the test block, improving the stability of the support and the accuracy of the test. Furthermore, the relatively dense pitch of the adjustment screw provides a high degree of self-locking characteristics, which can reliably lock the position of the support plate 7 after adjustment. It will not retract or shift during the application of pressure, ensuring the reliability and safety of the test process.

[0039] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the two ends of the adjusting screw 81 are rotatably provided with mounting bearings 83, and the inner wall of the guide groove 6 is provided with a mounting groove 84 for the mounting bearings 83 to be inserted and fixed, and the mounting plane of the mounting bearings 83 is perpendicular to the inclined surface of the mounting block 5.

[0040] In this embodiment, the mounting bearing 83 is fixed in the mounting groove 84 on the inner wall of the guide groove 6. Its mounting plane is set perpendicular to the inclined surface of the mounting block 5. It is used to support the two ends of the adjusting screw 81. When the support plate 7 is not under pressure, the mounting bearing 83 provides a stable support point for the adjusting screw 81, ensuring that its axis position is fixed and can rotate smoothly. It ensures that the movement direction of the support plate 7 is always parallel to the inclined surface, and the movement is smooth and without interference.

[0041] Furthermore, when the support plate 7 is under load, the mounting groove 84 allows the mounting shaft 83 to be slightly displaced, preventing the load from being transmitted to the mounting shaft 83 through the adjusting screw 81, thus avoiding the adjusting screw 81 from acting as a carrier for transmitting torque and achieving the purpose of protecting the adjusting screw 81.

[0042] In a further preferred embodiment of this utility model, such as Figure 4 As shown, extension rods 13 are fixedly provided on both sides of the support plate 7, and guide rails 14 are provided on both sides of the mounting block 5. Two sliders 15 are slidably provided inside the guide rails 14, and the two sliders 15 are fixedly connected to the extension rods 13 on both sides respectively.

[0043] In this embodiment, the extension rod 13 is fixed to both sides of the support plate 7 and connected to the slider 15 installed in the guide rail 14. When the support plate 7 moves in extension and retraction, the extension rod 13 drives the slider 15 to slide synchronously in the guide rail 14, forming an additional guiding and load-bearing path, which enhances the stability of the support plate 7 during movement and prevents it from warping or swaying under external force. Furthermore, when the support plate 7 is under load, the pressure of the test block is directly transmitted to the guide rail 14 and the main structure of the mounting block 5 through the extension rod 13 and the slider 15, effectively diverting the huge bending moment and shear force that should have acted on the adjusting screw 81, protecting the precision threaded pair from deformation or damage, and significantly extending the service life of the adjusting assembly 8.

[0044] In a further preferred embodiment of this utility model, such as Figure 2 As shown, a worm gear 16 is rotatably mounted on the bottom end of the fixed disk 1, and a worm wheel groove 17 that cooperates with the worm gear 16 is embedded in the circumferential side of the rotating disk 2.

[0045] In this embodiment, the worm gear 16 is rotatably mounted at the bottom of the fixed disk 1 and meshes with the worm wheel embedded in the periphery of the rotating disk 2. By turning the worm gear 16, the meshing worm wheel is driven, thereby converting the rotational motion of the worm gear 16 into the low-speed, high-torque rotational motion of the rotating disk 2. The worm wheel and worm gear 16 mechanism has a reverse self-locking characteristic, that is, the worm wheel cannot drive the worm gear 16, preventing the reaction force of the test block on the clamping force during the compression test from causing the rotating disk 2 to accidentally reverse and loosen. This ensures that the clamping force is constant and reliable throughout the test, greatly improving the stability of the test data.

[0046] The implementation principle of the above embodiment is as follows: by coarse adjustment of the rotating disk 2 and fine adjustment of the adjusting screw 81, the four support plates 7 stably support the bottom of the cement block. At the same time, the inclined surfaces of the four mounting blocks 5 wrap around and clamp the four bottom edges of the block. This combination of four-sided inclined clamping and bottom support provides stable and reliable fixation for the cement block, ensuring that it will not slip or become eccentric when subjected to downward pressure from above. This ensures the accuracy and reliability of the compressive strength test data. The self-locking characteristic of the worm gear 16 can prevent the rotating disk 2 from loosening during the test, further enhancing the stability of the fixture.

[0047] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A compression-resistant clamp for use in construction engineering testing, characterized in that, Including: A fixed plate (1) is set on the bottom side of the hydraulic equipment for testing cement blocks. A rotating plate (2) is set at the bottom end of the fixed plate (1). Four sliding grooves (3) are evenly distributed around the fixed plate (1). A connecting rod (4) is slidably set inside each sliding groove (3). A mounting block (5) is set at the top of the connecting rod (4). The side wall of the mounting block (5) is set as an inclined surface. A guide groove (6) is set on the inclined surface. A support plate (7) for supporting the test block is slidably set inside the guide groove (6). An adjustment component (8) for driving the support plate (7) to move along its length direction is set inside the guide groove (6). An inclined groove (9) is provided inside the rotating disk (2) at a position corresponding to each sliding groove (3). The end of the inclined groove (9) near the axis of the rotating disk (2) corresponds to the end of the sliding groove (3), and the bottom end of the connecting rod (4) is inserted into the inclined groove (9).

2. The compression-resistant clamp for construction engineering detection according to claim 1, characterized in that, The top of the connecting rod (4) is provided with a tray (10), and the two sides of the tray (10) are provided with support blocks (11). The top of the fixed plate (1) is provided with an extension groove (12). The bottom end of the support block (11) is inserted into the extension groove (12). The bottom end of the mounting block (5) is provided with a connecting groove that matches the tray (10) for inserting the mounting block (5) into the top of the connecting rod (4).

3. The compression-resistant clamp for construction engineering testing according to claim 2, characterized in that, The adjustment component (8) includes: The adjusting screw (81) is rotatably located inside the guide groove (6), and the end of the support plate (7) inserted into the guide groove (6) has a threaded hole (82) that is threaded to engage with the adjusting screw (81).

4. The compression-resistant clamp for construction engineering testing according to claim 3, characterized in that, The adjusting screw (81) is rotatably provided with mounting bearings (83) at both ends. The inner wall of the guide groove (6) is provided with a mounting groove (84) for the mounting bearings (83) to be inserted and fixed. The mounting plane of the mounting bearings (83) is perpendicular to the inclined surface of the mounting block (5).

5. The compression-resistant fixture for construction engineering testing according to claim 4, characterized in that, The tray (7) is fixedly provided with extension rods (13) on both sides, and the mounting block (5) is provided with guide rails (14) on both sides. Two sliders (15) are slidably provided inside the guide rails (14), and the two sliders (15) are fixedly connected to the extension rods (13) on both sides respectively.

6. The compression-resistant clamp for construction engineering testing according to claim 5, characterized in that, The bottom end of the fixed disk (1) is rotatably provided with a worm (16), and the circumferential side of the rotating disk (2) is embedded with a worm gear groove (17) that cooperates with the worm (16).

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