A stainless steel fastener strength detection device

Abstract

The utility model provides a kind of stainless steel fastener strength detection device, it is related to stainless steel fastener technical field, the utility model includes hydraulic testing machine, the surface of hydraulic testing machine is provided with hydraulic cylinder, wherein the output end of hydraulic cylinder is equipped with pressing plate, the surface of hydraulic testing machine is fixedly connected with base, wherein the surface of base is provided with clamp, and clamp includes bottom plate and stress plate, the surface of hydraulic testing machine is provided with auxiliary device, wherein the position stability of clamp when testing is guaranteed by the aid of stabilizing plate and support plate, the auxiliary device includes two mounting shafts, the utility model can guarantee the position stability of clamp plate piece when detecting the shear strength of bolt stainless steel fastener, abnormal deviation of position is not prone to occur, so as to guarantee the stress stability of bolt, abnormal complex load component is not prone to produce, guarantee the accuracy and reliability of detection result.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel fastener technology, and in particular to a stainless steel fastener strength testing device. Background Technology

[0002] Stainless steel fasteners refer to various fastening tools and components made of stainless steel. They are commonly used to connect, fix, and fasten other mechanical or structural components. Common stainless steel fasteners include bolts, nuts, washers, and screws. During their manufacturing process, their individual performance properties need to be tested.

[0003] In the field of bolt shear strength testing, accurately determining the shear strength of bolts is crucial for ensuring the safety and reliability of various engineering structures. Currently, bolt shear strength testing often involves applying shear loads to bolts mounted on plates using equipment such as universal testing machines. However, during the testing process, when the equipment applies pressure to the plates to simulate shear conditions, the lack of effective limiting constraints makes it difficult for the connected parts (plates) to maintain a fixed relative position. This results in the applied load not being applied to the bolts accurately and purely in the form of shear force. In reality, the clamped plates are prone to displacement in the lateral, longitudinal, or other directions, causing the load to generate complex component forces. In addition to the expected shear force, bending force, tensile force, etc., are also introduced, seriously affecting the accuracy and reliability of the test results. Utility Model Content

[0004] The technical problem this invention aims to solve is that during the testing process, when the equipment applies pressure to the plate to simulate shearing conditions, the lack of effective limiting constraints makes it difficult for the connected parts (plates) to maintain a fixed relative position. This results in the applied load not being able to act on the bolt accurately and purely in the form of shear force. In reality, the plate is prone to displacement in the lateral, longitudinal, or other directions, causing the load to generate complex component forces. In addition to the expected shear force, bending force, tensile force, etc., will also be introduced, which seriously affects the accuracy and reliability of the test results.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a stainless steel fastener strength testing device, including a hydraulic testing machine, wherein a hydraulic cylinder is provided on the surface of the hydraulic testing machine, wherein a pressure plate is installed at the output end of the hydraulic cylinder, a base is fixedly connected to the surface of the hydraulic testing machine, wherein a clamp is provided on the surface of the base, and the clamp includes a base plate and a force-bearing plate, and an auxiliary device is provided on the surface of the hydraulic testing machine, wherein the auxiliary device ensures the stability of the clamp position during the test by means of a stabilizing plate and a supporting plate.

[0006] Preferably, the auxiliary device includes two mounting shafts, which are respectively fixedly connected to the two sides of the base on the surface of the hydraulic testing machine. A support plate is rotatably connected to the arc surface of the mounting shaft. Two rotating blocks are rotatably connected to the arc surface of one end of the support plate. A stabilizing plate is mounted on the surface of the two rotating blocks. The stabilizing plate is snapped onto the surface of the fixture. Positioning rods are fixedly connected to both sides of the surface of the support plate. A fixing component is provided on the surface of the hydraulic testing machine. The fixing component helps to fix the position of the positioning rods.

[0007] Preferably, the fixing component includes a mounting bracket, wherein the mounting bracket is connected and fixed to the surface of the hydraulic testing machine, and both sides of the surface of the mounting bracket are provided with sliding grooves, wherein a fixing block is slidably connected to the inner wall of the sliding groove, and a spring is connected between the fixing block and the sliding groove.

[0008] Preferably, a lever is mounted on the surface of the fixing block, wherein the lever assists in the convenient operation of the fixing block.

[0009] Preferably, a fixing rod is installed on the surface of the stabilizing plate, wherein the fixing rod is rotatably slidably inserted into a slot on the surface of the support plate, and a positioning ring is installed on the arc surface of the fixing rod by means of a thread.

[0010] Preferably, two stabilizing rods are installed on the inner wall of the stabilizing plate, and stabilizing grooves are provided on both sides of the surface of the bottom plate and the force plate. The two stabilizing rods are respectively engaged with the two stabilizing grooves on the same side of the clamp.

[0011] Preferably, the auxiliary device includes torsion springs sleeved on the arc surfaces at both ends of the mounting shaft, wherein the two ends of the torsion springs are respectively connected and fixed to the mounting shaft and the support plate.

[0012] Preferably, one end of each of the two positioning rods on the surface of the support plate is fixedly connected to a reinforcing plate, wherein the reinforcing plate is snapped onto the surface of the base plate.

[0013] The beneficial effects of this utility model are: When testing the shear strength of stainless steel bolts, this invention ensures the stability of the position of the clamp plate 5, preventing abnormal positional shifts. This ensures stable bolt stress, reduces the likelihood of abnormally complex load components, and guarantees the accuracy and reliability of the test results. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the clamping part of this utility model; Figure 3This is a schematic diagram of the auxiliary device of this utility model; Figure 4 This is a schematic diagram of the structure of the support plate of this utility model; Figure 5 This is a structural schematic diagram of the fixing component of this utility model.

[0016] Legend: 1. Hydraulic testing machine; 2. Hydraulic cylinder; 3. Pressure plate; 4. Base; 5. Fixture; 51. Base plate; 52. Force plate; 6. Auxiliary device; 61. Mounting shaft; 62. Support plate; 63. Rotating block; 64. Stabilizing plate; 65. Positioning rod; 66. Fixing rod; 67. Positioning ring; 68. Reinforcing plate; 69. Torsion spring; 610. Stabilizing rod; 611. Stabilizing groove; 7. Fixing assembly; 71. Mounting bracket; 72. Slide groove; 73. Spring; 74. Fixing block; 75. Pulley. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Figure 1 and Figure 2 The stainless steel fastener strength testing device shown includes a hydraulic testing machine 1, a hydraulic cylinder 2 is provided on the surface of the hydraulic testing machine 1, a pressure plate 3 is installed at the output end of the hydraulic cylinder 2, a base 4 is fixedly connected to the surface of the hydraulic testing machine 1, a clamp 5 is provided on the surface of the base 4, and the clamp 5 includes a base plate 51 and a force-bearing plate 52, and an auxiliary device 6 is provided on the surface of the hydraulic testing machine 1, wherein the auxiliary device 6 ensures the stability of the clamp 5 during the test by means of a stabilizing plate 64 and a supporting plate 62.

[0020] Figure 1 and Figure 2As shown, when using the hydraulic testing machine 1 to test the shear strength of a bolt, the bolt is first passed through the surface of the load-bearing plate 52 and the base plate 51. Then, the washer and nut are installed on the bolt. The base plate 51 is then placed on the base 4. The auxiliary device 6 is then operated to limit the clamp 5. The setting is then activated to make the hydraulic cylinder 2 drive the pressure plate 3 fixedly connected to its output end to slide downward, contacting and pressing the load-bearing plate 52 until the bolt breaks under the force. Then, the pressure and other data at this time are recorded to determine the shear strength.

[0021] Figure 1 and Figure 2 As shown, when using the hydraulic testing machine 1 to test the shear strength of bolts, the bolt is first passed through the surfaces of the load-bearing plate 52 and the base plate 51. Then, washers and nuts are installed on the bolts. Next, the base plate 51 is placed on the base 4. Then, the support plates 62 on both sides of the base 4 are rotated, causing the support plates 62 to rotate on the arc surface of the mounting shaft 61 fixedly connected to the surface of the hydraulic testing machine 1. Then, the stabilizing plate 64 will contact the base plate 51 and the load-bearing plate 52, and under the rotation of the rotating block 63, the stabilizing plate 64 will fit against the surface of the clamp 5. At the same time, the fixing rods 66 on both sides of the surface of the support plate 62 will be fixed on the surface of the hydraulic testing machine 1. The lower limit fixing of component 7 limits and stabilizes the components of the entire auxiliary device 6, thereby limiting the clamp 5. Then, the setting is activated to drive the hydraulic cylinder 2 to slide the pressure plate 3 fixedly connected to its output end downward, contacting and pressing the force plate 52 until the bolt breaks under the force. Then, the pressure and other data at this time are recorded to determine the shear strength. At this time, when testing the shear strength of the stainless steel fastener bolt, the position of the clamp 5 plate can be guaranteed to be stable, and abnormal positional deviation is not easy to occur, thereby ensuring the stability of the bolt force and preventing the generation of abnormal and complex load components, ensuring the accuracy and reliability of the test results.

[0022] Figure 1 - Figure 3The fixed assembly 7 shown includes a mounting bracket 71, which is fixedly connected to the surface of the hydraulic testing machine 1. Slide grooves 72 are provided on both sides of the surface of the mounting bracket 71. Fixing blocks 74 are slidably connected to the inner walls of the slide grooves 72. A spring 73 connects the fixing blocks 74 and the slide grooves 72. When the support plate 62 rotates, the positioning rods 65 on both sides of its surface will contact the fixing blocks 74 on both sides of the mounting bracket 71. Because the surface of the fixing blocks 74 is arc-shaped, the fixing blocks 74 will move within the slide grooves 72 under pressure. The plate 64 slides until it covers the surface of the clamp 5. At this time, the fixing block 74 will slide back to its original position under the elastic force of the spring 73 until the fixing block 74 slides to the surface of the positioning rod 65, so that the positions of the support plate 62 and the stabilizing plate 64 are fixed. The surface of the fixing block 74 is equipped with a lever 75, which assists in the convenient operation of the fixing block 74. By setting the lever 75, after the test is completed, the fixing block 74 can be slid by pressing the lever 75 with two fingers, thereby releasing the limiting fixation of the fixing rod 66.

[0023] Figure 3 The surface of the stabilizing plate 64 shown is equipped with a fixing rod 66, which is rotatably inserted into the slot on the surface of the support plate 62. The arc surface of the fixing rod 66 is threaded with a positioning ring 67. When the stabilizing plate 64 is wrapped around the surface of the base plate 51 and the force plate 52 by the rotation of the rotating block 63, the fixing rod 66 will rotate and insert into the slot on the surface of the support plate 62. Then the positioning ring 67 on the arc surface of the fixing rod 66 will be threaded and rotated until the positioning ring 67 contacts and presses against the surface of the support plate 62. At this time, the position of the stabilizing plate 64 is more stable, thereby effectively limiting the clamp 5 and the bolt.

[0024] Figure 3 and Figure 4 The inner wall of the stabilizing plate 64 shown has two stabilizing rods 610. Stabilizing grooves 611 are provided on both sides of the surface of the base plate 51 and the force plate 52. The two stabilizing rods 610 are respectively engaged with the two stabilizing grooves 611 on the same side of the clamp 5. When the stabilizing plate 64 covers the surface of the base plate 51 and the force plate 52, the two stabilizing plates 64 on the inner wall of the stabilizing plate 64 will be engaged in the stabilizing grooves 611 on the side of the base plate 51 and the force plate 52 respectively. At this time, when the pressure plate 3 presses down on the force plate 52, it can better ensure the stability of the force on the force plate 52, and the continuous and stable descent applies shear force to the bolt.

[0025] Figure 3 and Figure 4The auxiliary device 6 shown includes torsion springs 69 sleeved on the arc surfaces at both ends of the mounting shaft 61. The two ends of the torsion springs 69 are respectively connected and fixed to the mounting shaft 61 and the support plate 62. With the setting of the torsion springs 69, after the test is completed and the operation fixing component 7 releases the limit on the positioning rod 65, the support plate 62 will rotate rapidly under the torsional force of the torsion springs 69, causing the stabilizing plate 64 to disengage from the clamp 5. One end of the two positioning rods 65 on the surface of the support plate 62 is fixedly connected to a reinforcing plate 68. The reinforcing plate 68 is snapped onto the surface of the base plate 51. With the setting of the U-shaped reinforcing plate 68, when the stabilizing plate 64 is snapped onto the surface of the base plate 51 and the force plate 52 at the same time, the reinforcing plate 68 will snap onto the surface of the base plate 51. At this time, the base plate 51 will be more stable and less prone to abnormal shaking.

[0026] Working principle: When using the hydraulic testing machine 1 to test the shear strength of bolts, firstly, the bolt passes through the surfaces of the load-bearing plate 52 and the base plate 51. Then, washers and nuts are installed on the bolts. Next, the base plate 51 is placed on the base 4. Then, the support plates 62 on both sides of the base 4 are rotated, causing the support plates 62 to rotate on the arc surface of the mounting shaft 61 fixedly connected to the surface of the hydraulic testing machine 1. Then, the stabilizing plate 64 will contact the base plate 51 and the load-bearing plate 52, and under the rotation of the rotating block 63, the stabilizing plate 64 will fit against the surface of the clamp 5. At the same time, the fixing rods 66 on both sides of the support plate 62 will be fixed on the surface of the hydraulic testing machine 1. When component 7 is activated, it limits and fixes the entire auxiliary device 6, thereby limiting the clamp 5. Then, the hydraulic cylinder 2 drives the pressure plate 3 fixedly connected to its output end to slide downward, contacting and pressing the force plate 52 until the bolt breaks under the force. Then, the pressure and other data at this time are recorded to determine the shear strength. At this time, when testing the shear strength of the stainless steel fastener bolt, the position of the clamp 5 plate can be kept stable, and abnormal positional deviation is not easy to occur. This ensures the stability of the bolt force and prevents the generation of abnormal and complex load components, thus ensuring the accuracy and reliability of the test results.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A stainless steel fastener strength testing device, comprising a hydraulic testing machine (1), characterized in that: The surface of the hydraulic testing machine (1) is provided with a hydraulic cylinder (2), wherein a pressure plate (3) is installed at the output end of the hydraulic cylinder (2), and a base (4) is fixedly connected to the surface of the hydraulic testing machine (1), wherein a clamp (5) is provided on the surface of the base (4), and the clamp (5) includes a base plate (51) and a force plate (52). An auxiliary device (6) is provided on the surface of the hydraulic testing machine (1), wherein the auxiliary device (6) ensures the stability of the clamp (5) during the test by means of a stabilizing plate (64) and a supporting plate (62).

2. The stainless steel fastener strength testing device according to claim 1, characterized in that: The auxiliary device (6) includes two mounting shafts (61), which are fixedly connected to the two sides of the base (4) on the surface of the hydraulic testing machine (1). A support plate (62) is rotatably connected to the arc surface of the mounting shaft (61). Two rotating blocks (63) are rotatably connected to the arc surface of one end of the support plate (62). A stabilizing plate (64) is installed on the surface of the two rotating blocks (63). The stabilizing plate (64) is snapped onto the surface of the fixture (5). Positioning rods (65) are fixedly connected to both sides of the surface of the support plate (62). A fixing component (7) is provided on the surface of the hydraulic testing machine (1). The fixing component (7) helps to fix the position of the positioning rods (65).

3. The stainless steel fastener strength testing device according to claim 2, characterized in that: The fixing component (7) includes a mounting bracket (71), wherein the mounting bracket (71) is fixedly connected to the surface of the hydraulic testing machine (1), and a sliding groove (72) is provided on both sides of the surface of the mounting bracket (71), wherein a fixing block (74) is slidably connected to the inner wall of the sliding groove (72), and a spring (73) is connected between the fixing block (74) and the sliding groove (72).

4. The stainless steel fastener strength testing device according to claim 3, characterized in that: The surface of the fixing block (74) is equipped with a lever (75), which assists in the convenient operation of the fixing block (74).

5. The stainless steel fastener strength testing device according to claim 1, characterized in that: The surface of the stabilizing plate (64) is fitted with a fixing rod (66), wherein the fixing rod (66) is rotatably inserted into the slot on the surface of the support plate (62), and a positioning ring (67) is installed on the arc surface of the fixing rod (66) by means of a thread.

6. The stainless steel fastener strength testing device according to claim 2, characterized in that: Two stabilizing rods (610) are installed on the inner wall of the stabilizing plate (64). Stabilizing grooves (611) are provided on both sides of the surface of the bottom plate (51) and the force plate (52). The two stabilizing rods (610) are respectively engaged with the two stabilizing grooves (611) on the same side of the clamp (5).

7. The stainless steel fastener strength testing device according to claim 2, characterized in that: The auxiliary device (6) includes a torsion spring (69) sleeved on the arc surfaces at both ends of the mounting shaft (61), wherein the two ends of the torsion spring (69) are respectively connected and fixed to the mounting shaft (61) and the support plate (62).

8. The stainless steel fastener strength testing device according to claim 2, characterized in that: A reinforcing plate (68) is fixedly connected to one end of two positioning rods (65) on the surface of the support plate (62), wherein the reinforcing plate (68) is snapped onto the surface of the base plate (51).

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