A device for testing the strength of a concrete precast

Abstract

The utility model relates to building material detection technical field discloses a kind of concrete prefabricated part strength testing device.Device includes base, support frame, electric push rod and loading plate, the inside of the base of device is equipped with clamping mechanism and adjusting assembly, the slider of clamping mechanism is connected with the one end of connecting rod of adjusting assembly, the other end of connecting rod is slidably connected in the recess of rotating disc in adjusting assembly, when slider slides, connecting rod drives rotating disc to rotate, transmission column on rotating disc rotates accordingly, to drive prefabricated piece adjustment angle, realize automatic centering.In addition, loading plate is detachably connected to electric push rod by quick release mechanism.The utility model passes through automatic centering mechanism, solved the problem that prefabricated piece and pressure head are not parallel, guaranteed test accuracy, the design of quick release mechanism simultaneously, realized the quick replacement of pressure head, improved test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building material testing technology, and in particular to a strength testing device for precast concrete components. Background Technology

[0002] Precast concrete components are widely used in modern construction, and their mechanical strength directly affects the safety and stability of the building. Therefore, before leaving the factory, precast components typically undergo strength testing to examine their compressive strength and other mechanical properties to ensure that their quality meets standards.

[0003] Existing strength testing devices typically include a base, a loading mechanism, and a pressure head. During testing, the precast concrete component is placed on the base, and then the loading mechanism (such as an electric actuator or hydraulic cylinder) is activated to drive the pressure head downwards. Sensors measure the force and deformation data of the precast component during the compression process to assess its strength.

[0004] A crucial prerequisite for the aforementioned testing process is ensuring that the upper surface of the precast component is strictly parallel to the lower surface of the loading head. However, during the production or handling of precast concrete components, slight angular deviations may exist on their surfaces, or they may be difficult to align perfectly on the first attempt when placed on the test base.

[0005] This parallelism deviation causes uneven loading between the indenter and the precast component, making it difficult to distribute the pressure evenly across the entire pressure surface, instead concentrating it at a certain corner or side. This stress concentration not only easily leads to premature local failure of the precast component, but also causes the maximum force value obtained in the test to deviate from the true strength, seriously affecting the accuracy and reliability of the test results. Currently, operators often need to rely on experience to repeatedly adjust and align manually, which is cumbersome and difficult to guarantee alignment accuracy. Therefore, a concrete precast component strength testing device is proposed to solve the above problems. Utility Model Content

[0006] In view of the problems in the existing concrete precast component strength testing devices, such as the difficulty in keeping the upper surface of the precast component parallel to the loading head, leading to inaccurate test results, and the cumbersome and inefficient process of changing different loading heads for local pressure testing, this utility model aims to provide a concrete precast component strength testing device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a strength testing device for precast concrete components, including: a base, a support frame, an electric push rod, and a loading plate.

[0008] The innovation of the device lies in the fact that the base is equipped with a clamping mechanism and an adjustment component. The clamping mechanism is used to clamp the preform, and the adjustment component is used to adjust the angle of the preform to achieve automatic centering. Furthermore, the loading plate is detachably connected to the electric push rod through a quick-release mechanism.

[0009] The clamping mechanism includes a fixed plate disposed within the base, the fixed plate having a sliding groove, and a slider slidably connected to the sliding groove, as well as a clamp fixed to the top of the slider. The clamp is used to stably clamp the precast component placed on the base, ensuring the stability of the precast component's position during pressurization.

[0010] Preferably, the adjustment assembly includes a rotating disk rotatably disposed within the base, a transmission column fixed to the top of the rotating disk, and a connecting rod. The rotating disk has a groove, and one end of the connecting rod is connected to the slider, while the other end is slidably connected within the groove of the rotating disk. Through this unique structural combination, when the slider performs a clamping action, it slides linearly, which in turn causes the connecting rod to slide within the groove of the rotating disk, thereby causing the rotating disk to rotate. The rotating disk contacts the side or bottom of the precast component via the transmission column, achieving automatic adjustment of the precast component's posture, thus ensuring that the upper surface of the precast component is strictly parallel to the bottom of the loading plate. The clamping mechanism also includes a pull rod and a spring. The pull rod connects to the slider, and the spring is disposed within the groove and abuts against the slider. The spring provides a certain return or clamping preload force.

[0011] Preferably, the top end of the transmission column contacts the preform, and the transmission column is used to drive the preform to rotate when the rotating disk rotates, so as to ensure that the upper surface of the preform and the bottom flatness of the loading plate are consistent.

[0012] Preferably, the quick-release mechanism includes a concave block fixed to the top of the loading plate, a fixed rod fixed to the end of the electric push rod, a sliding column slidably connected to the fixed rod, and a connecting rod that passes through and is connected to the sliding column.

[0013] Furthermore, the quick-release mechanism also includes a locking assembly, which consists of a rotating column, a limiting block, and a sliding rod. The two ends of the connecting rod are rotatably connected to the rotating column, and the limiting block is located at the bottom of the rotating column. The limiting block is used to secure the concave block in the locked state.

[0014] Preferably, a sliding groove is provided on the outer side of the rotating column, and the sliding rod is slidably connected in the sliding groove. The function of the sliding rod is to provide guiding constraints when the sliding column pushes the rotating column to slide, restricting and causing it to rotate, thereby converting the linear push into a rotational locking action.

[0015] As a specific implementation method, when disassembling the loading plate, the loading plate can be manually rotated to rotate the concave block on it, so that the limiting block slides out from the locking position, thereby achieving rapid removal of the loading plate.

[0016] In one specific implementation, after the loading plate is removed, the sliding column automatically slides to the bottom of the electric push rod under the action of gravity without any external constraint, making it convenient to install different pressure heads next time.

[0017] Furthermore, the bottom of the electric push rod is provided with a sliding groove, and the loading plate is installed by aligning the concave block with the sliding groove and sliding it into the groove, thereby achieving fast and accurate positioning and connection.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting up a clamping mechanism and an adjusting component in linkage, uses the linear motion of the slider to drive the rotating disk to rotate, and then the transmission column contacts and drives the precast part to rotate. This solves the problem in the prior art that the upper surface of the precast part is difficult to keep parallel with the loading head and that the force is uneven. It achieves the technical effect of realizing automatic centering of the precast part and improving the accuracy of strength test results.

[0020] 2. This utility model, by setting a quick-release mechanism and utilizing the quick-locking structure of the concave block and the limiting block, realizes the detachable connection between the loading plate and the electric push rod, which solves the problem of complex, time-consuming and labor-intensive process of changing the pressure head in the prior art, and achieves the technical effect of being able to quickly change different loading plates (pressure heads), meet the needs of local pressure testing, and improve testing efficiency.

[0021] 3. This utility model solves the problem of difficulty in resetting the quick-release mechanism after disassembly by setting a sliding connection between the sliding column and the fixed rod in the quick-release mechanism, and allowing the sliding column to automatically reset under the action of gravity after the loading plate is removed. This achieves the technical effect of facilitating the next installation and further simplifying the operation process.

[0022] 4. This utility model, through the combined design of clamping mechanism and adjustment component, achieves stable clamping and automatic angle adjustment of prefabricated parts, solving the problems of low efficiency and poor accuracy of manual leveling before testing in the prior art, and achieving the technical effect of improving the automation level of the device and ensuring the accuracy of the test preparation stage. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a concrete precast component strength testing device proposed in this utility model;

[0024] Figure 2This is a schematic diagram of the base of a concrete precast component strength testing device proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the fixing plate of the strength testing device for precast concrete components proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of an electric push rod for a concrete precast component strength testing device proposed in this utility model;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Base; 2. Support frame;

[0030] 3. Clamping mechanism; 31. Fixture; 32. Slider; 33. Fixing plate; 34. Slide groove; 36. Spring; 37. Tie rod; 38. Transmission column;

[0031] 35. Adjustment component; 351. Rotary disc; 352. Connecting rod;

[0032] 4. Quick-release mechanism; 41. Electric push rod; 42. Fixed rod; 43. Sliding column; 44. Connecting rod; 45. Rotating column; 46. Limiting block; 47. Concave block; 48. Sliding rod;

[0033] 5. Loading plate. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example:

[0036] Reference Figures 1 to 5 This utility model provides a concrete precast component strength testing device, which aims to solve the problems in the prior art where the upper surface of the precast component is difficult to keep parallel with the loading head, resulting in inaccurate testing, and the cumbersome and inefficient process of replacing the loading head.

[0037] A concrete precast component strength testing device includes a base 1, a support frame 2 fixedly connected to the base 1, an electric push rod 41 installed on the support frame 2, a loading plate 5 disposed at the push rod end of the electric push rod 41, a clamping mechanism 3 and an adjusting component 35 provided inside the base 1, the clamping mechanism 3 is used to clamp the precast component, the adjusting component 35 is used to adjust the angle of the precast component to achieve automatic centering, and the loading plate 5 is detachably connected to the electric push rod 41 through a quick-release mechanism 4.

[0038] The clamping mechanism 3 has a fixed plate 33 located inside the base 1, and a groove 34 is provided on the fixed plate 33 to guide and limit the movement of the slider 32. The clamping mechanism 3 also includes a slider 32 slidably connected to the groove 34, and a clamp 31 fixed to the top of the slider 32. The clamp 31 is used to stably clamp the preform to ensure that the loading plate 5 can pressurize the preform. The clamping mechanism 3 also includes a pull rod 37 and a spring 36. The pull rod 37 is connected to the slider 32, and the spring 36 is located in the groove 34 and abuts against the slider 32. When the pull rod 37 drives the slider 32 to slide in the groove 34, the spring 36 is compressed.

[0039] The adjustment assembly 35 includes a rotating disk 351, a transmission column 38, and a connecting rod 352. The rotating disk 351 is rotatably disposed inside the base 1, and a groove is formed on the rotating disk 351. The transmission column 38 is fixed to the top of the rotating disk 351 and contacts the preform. One end of the connecting rod 352 is connected to the slider 32, and the other end is slidably connected to the groove of the rotating disk 351. In the assembled state, when the slider 32 slides in the groove 34, it drives the connecting rod 352 to slide in the groove. This cooperative structure, in which the linear motion of the slider 32 is linked to the rotation of the rotating disk 351, allows the rotating disk 351 to rotate, and drives the preform to rotate through the transmission column 38, ensuring that the upper surface of the preform is parallel to the bottom of the loading plate 5, thus achieving automatic centering.

[0040] In a preferred embodiment, the top end of the transmission column 38 contacts the preform, and the transmission column 38 is used to synchronously drive the preform to rotate when the rotating disk 351 rotates, thereby adjusting the posture of the preform.

[0041] As another preferred embodiment, the quick-release mechanism 4 is used to realize the detachable connection between the loading plate 5 and the electric push rod 41. The bottom of the electric push rod 41 is provided with a sliding groove. The quick-release mechanism 4 includes a concave block 47 fixed to the top of the loading plate 5. The concave block 47 is aligned with the sliding groove at the bottom of the electric push rod 41 and slides into it to realize the installation of the loading plate 5.

[0042] As another preferred embodiment, the quick-release mechanism 4 further includes a fixed rod 42 fixed to the end of the electric push rod 41, and a sliding column 43 slidably connected to the fixed rod 42, with a connecting rod 44 passing through the sliding column 43.

[0043] As another preferred embodiment, the quick-release mechanism 4 also includes a locking assembly, which includes a rotating column 45, a limiting block 46 and a sliding rod 48. The two ends of the connecting rod 44 are connected to the rotating column 45, and the limiting block 46 is located at the bottom of the rotating column 45 to secure the concave block 47.

[0044] In another preferred embodiment, a sliding groove is provided on the outer side of the rotating column 45, and a sliding rod 48 is slidably connected in the sliding groove. The sliding rod 48 is used to restrict and cause the rotating column 45 to rotate when the sliding column 43 pushes the rotating column 45 to slide, thereby driving the limiting block 46 to rotate to the locking position.

[0045] As another preferred embodiment, during disassembly, the loading plate 5 is manually rotated to drive the concave block 47 to rotate, causing the limiting block 46 to slide out from the locking position, thereby removing the loading plate 5. After the loading plate 5 is removed, the sliding column 43 automatically slides to the bottom of the electric push rod 41 under the action of gravity, which is convenient for installing different pressure heads next time.

[0046] The implementation principle of this application embodiment is as follows: This concrete precast component strength testing device consists of a base 1, a support frame 2 fixed on the base 1, an electric push rod 41, and a loading plate 5. The operator first places the precast component in the center of the base 1, and then starts the electric push to drive the loading plate 5 fixed at the bottom to press down and test the strength of the precast component. The base 1 is equipped with a clamping mechanism 3 and an adjustment component 35, which can adjust the angle of the precast component while clamping it to ensure that the upper surface of the precast component is parallel to the loading plate 5, thereby achieving automatic centering. In addition, the loading plate 5 and the electric push rod 41 on its top are detachably connected. Different pressure heads can be quickly replaced for local pressure testing through the quick-release mechanism 4.

[0047] First, the worker places the precast component on the base 1. At this time, the drive rod 37 drives the slider 32, which is fixed to one side of the rod 37, to slide in the groove 34 of the fixed plate 33. While sliding, the spring 36 is compressed. When the slider 32 slides, it drives the clamp 31 on its top to slide on the base 1 and stably clamps the precast component placed on the base 1 to ensure that the loading plate 5 can pressurize the precast component. At the same time, the front side of the slider 32 is connected to the connecting rod 352. The base 1 is rotatably connected to the rotating disk 351. The rotating disk 351 has a groove. The connecting rod 352 slides in the groove. When the slider 32 slides, it drives the connecting rod 352 to slide in the groove and drives the rotating disk 351 to rotate. The top of the rotating disk 351 is provided with a transmission column 38. The transmission column 38 contacts the precast component. The rotation of the rotating disk 351 drives the precast component on its top to rotate, ensuring that the upper surface of the precast component is parallel to the bottom of the loading plate 5, realizing automatic centering. At this time, the electric push rod 41 is activated to drive the loading plate 5 at its bottom to press down and test the strength of the precast component.

[0048] Then, when it is necessary to change to a different pressure head for local pressure testing, during installation, the concave block 47 is aligned with the sliding groove at the bottom of the electric push rod 41 and slid into its interior. As the concave block 47 slides, it pushes the sliding column 43 to slide on the fixed rod 42. The connecting rod 44 passes through the interior of the sliding column 43 and connects to the rotating columns 45 on both sides. The outer side of the rotating column 45 is provided with a sliding groove, and the sliding rod 48 is slidably connected inside it. When the rotating column 45 slides, it is restricted by the sliding rod 48 to rotate, which drives the limiting block 46 at the bottom of the rotating column 45 to rotate and fix the concave block 47 to complete the installation of the loading plate 5. Manually rotating the loading plate 5 drives the concave block 47 fixed on the top of the loading plate 5 to rotate, so that the limiting block 46 slides out of the groove and the loading plate 5 can be removed. After the loading plate 5 is removed, the sliding column 43 automatically slides to the bottom of the electric push rod 41 under the action of gravity, which is convenient for the next installation of a different pressure head.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A strength testing device for precast concrete components, comprising: A base (1) and a support frame (2), wherein the support frame (2) is fixedly connected to the base (1); The quick-release mechanism (4) includes an electric push rod (41), which is mounted on the support frame (2) and the loading plate (5); The base (1) is characterized in that it is provided with a clamping mechanism (3) and an adjusting component (35). The clamping mechanism (3) is used to clamp the preform, and the adjusting component (35) is used to adjust the angle of the preform to achieve automatic centering. The clamping mechanism (3) includes a fixing plate (33) provided in the base (1). The fixing plate (33) is provided with a sliding groove (34). The clamping mechanism (3) also includes a slider (32) slidably connected to the sliding groove (34) and a clamp (31) fixed to the top of the slider (32).

2. The strength testing device for precast concrete components according to claim 1, characterized in that, The adjustment assembly (35) includes a rotating disk (351) rotatably disposed in the base (1), a transmission column (38) fixed to the top of the rotating disk (351), and a connecting rod (352). The rotating disk (351) has a groove. One end of the connecting rod (352) is connected to the slider (32), and the other end is slidably connected to the groove of the rotating disk (351), so that the sliding of the slider (32) drives the rotating disk (351) to rotate. The loading plate (5) is detachably connected to the electric push rod (41) through a quick-release mechanism (4). The clamping mechanism (3) also includes a pull rod (37) and a spring (36). The pull rod (37) is connected to the slider (32), and the spring (36) is disposed in the groove (34) and abuts against the slider (32).

3. The strength testing device for precast concrete components according to claim 2, characterized in that, The top end of the transmission column (38) is in contact with the preform, and the transmission column (38) is used to drive the preform to rotate when the rotating disk (351) rotates.

4. The strength testing device for precast concrete components according to claim 1, characterized in that, The quick-release mechanism (4) includes: a concave block (47) fixed to the top of the loading plate (5), a fixing rod (42) fixed to the end of the electric push rod (41), a sliding column (43) slidably connected to the fixing rod (42), and a connecting rod (44) that is connected through the sliding column (43).

5. The concrete precast component strength testing device according to claim 4, characterized in that, The quick-release mechanism (4) also includes a locking assembly, which includes a rotating column (45), a limiting block (46), and a sliding rod (48).

6. The strength testing device for precast concrete components according to claim 5, characterized in that, The two ends of the connecting rod (44) are connected to the rotating column (45), and the limiting block (46) is located at the bottom of the rotating column (45). The limiting block (46) is used to secure the concave block (47).

7. The strength testing device for precast concrete components according to claim 6, characterized in that, A sliding groove is provided on the outer side of the rotating column (45), and the sliding rod (48) is slidably connected in the sliding groove. The sliding rod (48) is used to restrict and make the rotating column (45) rotate when the sliding column (43) pushes the rotating column (45) to slide.

8. The strength testing device for precast concrete components according to claim 5, characterized in that, When the concave block (47) is rotated manually, the limiting block (46) slides out from the locking position, thereby removing the loading plate (5).

9. A strength testing device for precast concrete components according to claim 5, characterized in that, After the loading plate (5) is removed, the sliding column (43) automatically slides to the bottom of the electric push rod (41) under the action of gravity.

10. A strength testing device for precast concrete components according to claim 4, characterized in that, The bottom of the electric push rod (41) is provided with a sliding groove, and the loading plate (5) is installed by aligning the concave block (47) with the sliding groove and sliding it into the groove.

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