Rebar strength detection clamp

Abstract

The utility model relates to building material detection technical field, concretely is a kind of steel strength detection clamp, including support platform, recess and slot, the recess is set in support platform upper end, the slot is set in support platform upper end, the inside of slot is provided with clamping block at equal distance, the lower pressure mechanism is arranged in support platform upper end, the lower pressure mechanism is connected with detection mechanism, the limit mechanism is symmetrically arranged in support platform upper end.The utility model is provided with detection mechanism, after contact steel bar in the use process of pressure rod, continue to move down with connecting plate, limit post slides, first reset spring compression, simultaneously, sliding block is pressed and slides, second reset spring compression, under the action of double elastic structure, pressure rod can exert sustained and stable pressure on steel bar, in this process, the deformation degree of steel bar under different pressure and other data can be monitored by relevant detection equipment, so as to judge whether the strength of steel bar meets the standard.

Description

Technical Field

[0001] This utility model relates to the field of building material testing technology, and in particular to a steel bar strength testing fixture. Background Technology

[0002] As the core load-bearing material in construction engineering, the strength of steel bars directly determines the stability, safety and service life of building structures. Therefore, accurate strength testing of steel bars before their application in engineering is a key step in controlling the quality of building materials.

[0003] Existing steel bar strength testing fixtures are designed for testing steel bars of specific models or sizes. When faced with various specifications of steel bars commonly used in engineering projects, different fixtures need to be frequently changed, resulting in poor practicality. Furthermore, existing devices cannot be adjusted in a timely manner according to the steel bar model during use, leading to poor actual performance.

[0004] Therefore, addressing the problem that existing rebar strength testing fixtures are only suitable for specific models or sizes of rebar, and require frequent replacement of different fixtures when dealing with various specifications of rebar commonly used in engineering, resulting in poor practicality, this utility model incorporates a limiting mechanism and a testing mechanism. During use, the testing mechanism simulates a real-world application scenario by applying downward pressure, thereby facilitating more accurate testing data. Simultaneously, the limiting mechanism provides positioning during use, and a limiting roller is included to reduce additional frictional resistance to the rebar, ensuring the accuracy of the rebar strength testing results. Utility Model Content

[0005] To overcome the problem that common steel bar strength testing fixtures are only suitable for testing specific types or sizes of steel bars, and require frequent replacement of different fixtures when dealing with various specifications of steel bars commonly used in engineering, resulting in poor practicality.

[0006] The technical solution of this utility model is as follows: a steel bar strength testing fixture, including a support platform, a groove and a slot. The upper end of the support platform is provided with a groove and a slot. The slot is provided with slot blocks at equal intervals on the inner side of the slot. A pressing mechanism is provided on the upper end of the support platform. The pressing mechanism is connected to a testing mechanism. The testing mechanism is located above the support platform. Limiting mechanisms are symmetrically provided on the upper end of the support platform.

[0007] Preferably, the pressing mechanism includes a support plate, a square groove, a drive motor, a threaded rod, a slide rod, and a connecting plate. The support plate is symmetrically arranged on the upper end of the support platform. The support plate has a square groove on its side. A threaded rod is rotatably arranged inside one of the square grooves, and a slide rod is arranged inside the other square groove. The connecting plate is threadedly connected to the side of the threaded rod.

[0008] Preferably, the connecting plate is slidably disposed inside the square groove, and the connecting plate is slidably connected to the slide rod.

[0009] Preferably, the detection mechanism includes a square plate, limiting posts, a first return spring, a slide groove, a housing, a slider, a second return spring, a magnetic plate, and a pressure rod. The square plate is arranged below the connecting plate, and limiting posts are symmetrically arranged above the square plate. The first return spring is arranged on the side of the limiting post. The slide groove is symmetrically opened above the square plate. A magnetic plate is embedded in the bottom surface of the inner side of the slide groove. The housing is arranged at equal intervals inside the slide groove. The slider is slidably connected to the housing. The second return spring is arranged inside the housing. The pressure rod is arranged below the square plate.

[0010] Preferably, the limiting post is slidably connected to the connecting plate, one end of the first return spring is connected to the lower surface of the connecting plate, the other end of the first return spring is connected to the upper surface of the square plate, the lower surface of the housing is magnetically connected to the magnetic plate, the upper end of the slider is attached to the lower surface of the connecting plate, and the upper end of the second return spring is connected to the slider.

[0011] Preferably, the limiting mechanism includes a circular shell, a connecting rod, a supporting spring, a limiting plate, a clamping plate, and a limiting roller. The upper end of the support platform is symmetrically provided with a circular shell, the circular shell is slidably connected to the connecting rod, the circular shell is provided with a supporting spring, the upper end of the connecting rod is connected to a limiting plate, the lower end of the limiting plate is symmetrically provided with a clamping plate, and the clamping plate is rotatably connected to the limiting roller.

[0012] Preferably, one end of the support spring is connected to the upper inner wall of the circular shell, and the other end of the support spring is connected to the connecting rod.

[0013] The beneficial effects of this utility model are: 1. Equipped with a pressing mechanism and a symmetrical limiting mechanism during use, the limiting plate is pulled up when placing the rebar. After placement, it is released, and the elastic force of the support spring can drive the connecting rod and the limiting plate to move down, so that the limiting roller is in close contact with the surface of the rebar, forming a stable limit on the rebar. When the rebar undergoes a slight deformation due to the force being tested, the limiting roller rotates at the same time, reducing the additional frictional resistance on the rebar, avoiding friction factors from interfering with the test data, and ensuring the accuracy of the rebar strength test results. 2. Equipped with a testing mechanism, during use, after the pressure bar contacts the reinforcing bar, it continues to move downward with the connecting plate. The limiting column slides, the first return spring is compressed, and at the same time, the slider slides under pressure and the second return spring is compressed. Under the action of the dual elastic structure, the pressure bar can apply continuous and stable pressure to the reinforcing bar. During this process, relevant testing equipment can be used to monitor data such as the degree of deformation of the reinforcing bar under different pressures, thereby determining whether the strength of the reinforcing bar meets the standard. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 The diagram shown is a three-dimensional structural schematic of the card block of this utility model; Figure 3 The diagram shown is a three-dimensional structural schematic of the pressing mechanism of this utility model; Figure 4 The diagram shown is a three-dimensional structural schematic of the testing mechanism of this utility model; Figure 5 This utility model is shown. Figure 4 Enlarged structural diagram of point A in the middle; Figure 6 The diagram shown is a three-dimensional structural schematic of the limiting mechanism of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Support platform; 2. Groove; 3. Slot; 4. Block; 5. Pressing mechanism; 51. Support plate; 52. Square groove; 53. Drive motor; 54. Threaded rod; 55. Sliding rod; 56. Connecting plate; 6. Detection mechanism; 61. Square plate; 62. Limiting post; 63. First return spring; 64. Sliding groove; 65. Housing; 66. Sliding block; 67. Second return spring; 68. Magnetic plate; 69. Pressure rod; 7. Limiting mechanism; 71. Circular shell; 72. Connecting rod; 73. Supporting spring; 74. Limiting plate; 75. Blocking plate; 76. Limiting roller. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-6 This utility model provides a technical solution: a steel bar strength testing fixture, including a support platform 1, a groove 2 and a slot 3. The upper end of the support platform 1 is provided with a groove 2 and a slot 3. The slot 3 is provided with slot blocks 4 at equal intervals on the inner side of the slot 3. The upper end of the support platform 1 is provided with a pressing mechanism 5, which is connected to a testing mechanism 6. The testing mechanism 6 is located above the support platform 1. The upper end of the support platform 1 is symmetrically provided with limit mechanisms 7.

[0018] The pressing mechanism 5 includes a support plate 51, a square groove 52, a drive motor 53, a threaded rod 54, a slide rod 55, and a connecting plate 56. The support plate 51 is symmetrically arranged on the upper end of the support platform 1. The support plate 51 has a square groove 52 on its side. The threaded rod 54 is rotatably arranged inside one of the square grooves 52, and the slide rod 55 is arranged inside the other square groove 52. The connecting plate 56 is threadedly connected to the side of the threaded rod 54. The connecting plate 56 is slidably arranged inside the square groove 52. The connecting plate 56 is slidably connected to the slide rod 55. When the drive motor 53 is started, the drive motor 53 drives the threaded rod 54 to rotate in the square groove 52. During the rotation of the threaded rod 54, it drives the connecting plate 56 to move vertically downward along the square groove 52 and the slide rod 55, thereby driving the detection mechanism 6 connected to the connecting plate 56 to move downward as a whole.

[0019] The detection mechanism 6 includes a square plate 61, a limiting post 62, a first return spring 63, a slide groove 64, a housing 65, a slider 66, a second return spring 67, a magnetic plate 68, and a pressure rod 69. The square plate 61 is located below the connecting plate 56. Limiting posts 62 are symmetrically arranged above the square plate 61. A first return spring 63 is located on the side of the limiting post 62. Slide grooves 64 are symmetrically formed above the square plate 61. A magnetic plate 68 is embedded in the bottom surface of the inner side of the slide groove 64. Housings 65 are evenly spaced inside the slide groove 64. The slider 66 is slidably connected to the housing 65. A second return spring 67 is located inside the housing 65. A pressure rod 69 is located below the square plate 61. The limiting post 62 is slidably connected to the connecting plate 56. The first return spring 67... One end of the first return spring 63 is connected to the lower surface of the connecting plate 56, and the other end of the first return spring 63 is connected to the upper surface of the square plate 61. The lower surface of the housing 65 is magnetically connected to the magnetic plate 68. The upper end of the slider 66 is attached to the lower surface of the connecting plate 56. The upper end of the second return spring 67 is connected to the slider 66. During the downward movement of the connecting plate 56, the pressure rod 69 below the square plate 61 contacts the upper surface of the reinforcing bar. As the connecting plate 56 continues to move downward, the limiting post 62 slides inside the connecting plate 56, the first return spring 63 is compressed, and at the same time, the slider 66 is subjected to the pressure of the lower surface of the connecting plate 56, slides downward inside the housing 65 and compresses the second return spring 67. The pressure rod 69 applies continuous and stable pressure to the reinforcing bar, simulating the stress situation of the reinforcing bar in actual use.

[0020] The limiting mechanism 7 includes a circular shell 71, a connecting rod 72, a support spring 73, a limiting plate 74, a clamping plate 75, and a limiting roller 76. A circular shell 71 is symmetrically arranged on the upper end of the support platform 1. The circular shell 71 is slidably connected to the connecting rod 72. The support spring 73 is arranged inside the circular shell 71. The upper end of the connecting rod 72 is connected to the limiting plate 74. The lower end of the limiting plate 74 is symmetrically arranged with clamping plates 75. The clamping plates 75 are rotatably connected to the limiting roller 76. One end of the support spring 73 is connected to the upper inner wall of the circular shell 71, and the other end of the support spring 73 is connected to the connecting rod 72. While placing the reinforcing bar, the limiting plate 74 is pulled upward. After the reinforcing bar is placed, the limiting plate 74 is released. Under the elastic force of the support spring 73, the connecting rod 72 drives the limiting plate 74 to move downward, so that the limiting roller 76 rotatably connected to the clamping plate 75 at the lower end of the limiting plate 74 tightly fits against the surface of the reinforcing bar, thereby limiting the reinforcing bar.

[0021] Working principle: According to Figure 6 First, the reinforcing bar to be tested is placed in the groove 2 of the support platform 1. At the same time, the bottom of the reinforcing bar is initially limited by the clamping blocks 4 evenly arranged inside the clamping slot 3. During use, the number of clamping blocks 4 can be reduced according to actual needs to facilitate the strength testing of different types of reinforcing bars. While the reinforcing bar is being placed, the limiting plate 74 is pulled up. After the reinforcing bar is placed, the limiting plate 74 is released. Under the elastic force of the support spring 73, the connecting rod 72 drives the limiting plate 74 to move downward, so that the limiting roller 76 rotatably connected to the clamping plate 75 at the lower end of the limiting plate 74 fits tightly against the surface of the reinforcing bar, thereby limiting the reinforcing bar. At the same time, the reinforcing bar rotates when it undergoes a slight deformation due to the testing force, reducing the additional frictional resistance to the reinforcing bar, thereby ensuring the accuracy of the test results. according to Figures 1 to 3 Then, the drive motor 53 is started, and the drive motor 53 drives the threaded rod 54 to rotate in the square groove 52. During the rotation of the threaded rod 54, the connecting plate 56 moves vertically downward along the square groove 52 and the slide rod 55, thereby driving the detection mechanism 6 connected to the connecting plate 56 to move downward as a whole. according to Figures 4 to 5 During the downward movement of the connecting plate 56, the pressure rod 69 below the square plate 61 contacts the upper surface of the reinforcing bar. As the connecting plate 56 continues to move downward, the limiting post 62 slides within the connecting plate 56, the first return spring 63 is compressed, and the slider 66 is subjected to pressure from the lower surface of the connecting plate 56, sliding downward within the housing 65 and compressing the second return spring 67. The pressure rod 69 applies continuous and stable pressure to the reinforcing bar, simulating the stress situation of the reinforcing bar in actual use. During this process, data such as the degree of deformation of the reinforcing bar under different pressures can be monitored by relevant testing equipment to determine whether the strength of the reinforcing bar meets the standard. The housing 65 is designed to be detachable, and the housing 65 can be added or removed according to the actual use during use, so as to facilitate the device to be applicable to reinforcing bars of different sizes. In this device, the drive motor 53 is started after being connected to an external power source via a power cord. The drive motor 53 is a known and existing technology on the market and will not be described in detail here.

[0022] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel bar strength testing fixture, comprising a support platform (1), a groove (2), and a slot (3), characterized in that: The upper end of the support platform (1) is provided with a groove (2) and a slot (3). The slot (3) is provided with a card block (4) at equal intervals on the inner side of the slot (3). The upper end of the support platform (1) is provided with a pressing mechanism (5). The pressing mechanism (5) is connected to a detection mechanism (6). The detection mechanism (6) is located above the support platform (1). The upper end of the support platform (1) is symmetrically provided with a limit mechanism (7).

2. The steel bar strength testing fixture according to claim 1, characterized in that: The pressing mechanism (5) includes a support plate (51), a square groove (52), a drive motor (53), a threaded rod (54), a slide rod (55), and a connecting plate (56). The support plate (51) is symmetrically arranged on the upper end of the support platform (1). A square groove (52) is opened on the side of the support plate (51). A threaded rod (54) is rotatably arranged inside one of the square grooves (52), and a slide rod (55) is arranged inside the other square groove (52). The connecting plate (56) is threadedly connected to the side of the threaded rod (54).

3. A steel bar strength testing fixture according to claim 2, characterized in that: The connecting plate (56) is slidably disposed inside the square groove (52), and the connecting plate (56) is slidably connected to the slide rod (55).

4. A steel bar strength testing fixture according to claim 2, characterized in that: The detection mechanism (6) includes a square plate (61), a limiting post (62), a first reset spring (63), a slide groove (64), a housing (65), a slider (66), a second reset spring (67), a magnetic plate (68), and a pressure rod (69). The square plate (61) is provided below the connecting plate (56). The limiting post (62) is symmetrically provided above the square plate (61). The first reset spring (63) is provided on the side of the limiting post (62). The slide groove (64) is symmetrically provided above the square plate (61). The magnetic plate (68) is embedded in the bottom surface of the inner side of the slide groove (64). The housing (65) is provided at equal intervals inside the slide groove (64). The slider (66) is slidably connected to the housing (65). The second reset spring (67) is provided inside the housing (65). The pressure rod (69) is provided below the square plate (61).

5. A steel bar strength testing fixture according to claim 4, characterized in that: The limiting post (62) is slidably connected to the connecting plate (56). One end of the first reset spring (63) is connected to the lower surface of the connecting plate (56), and the other end of the first reset spring (63) is connected to the upper surface of the square plate (61). The lower surface of the housing (65) is magnetically connected to the magnetic plate (68). The upper end of the slider (66) is attached to the lower surface of the connecting plate (56), and the upper end of the second reset spring (67) is connected to the slider (66).

6. A steel bar strength testing fixture according to claim 1, characterized in that: The limiting mechanism (7) includes a circular shell (71), a connecting rod (72), a support spring (73), a limiting plate (74), a clamping plate (75), and a limiting roller (76). The supporting platform (1) is symmetrically provided with a circular shell (71) at its upper end. The circular shell (71) is slidably connected to the connecting rod (72). The circular shell (71) is provided with a support spring (73) inside. The upper end of the connecting rod (72) is connected to the limiting plate (74). The lower end of the limiting plate (74) is symmetrically provided with a clamping plate (75). The clamping plate (75) is rotatably connected to the limiting roller (76).

7. A steel bar strength testing fixture according to claim 6, characterized in that: One end of the support spring (73) is connected to the upper inner wall of the circular shell (71), and the other end of the support spring (73) is connected to the connecting rod (72).

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