A deformation-resistant detection device for a steel structure

Abstract

The utility model relates to a kind of anti-deformation detection devices for steel structure, belong to steel structure detection device technical field, including base, the top of base is equipped with two can provide torsion force to steel structure torsion mechanism, the top of base is fixed with the support frame extending to the torsion mechanism upper, the inner bottom wall of support frame is equipped with the lower pressure component that can improve the lower pressure of steel structure, each the torsion mechanism includes with the drive motor of the top of base fixed, the top of base is fixed with speed reducer, the output shaft of drive motor one end and the output end of speed reducer are fixed.The anti-deformation detection device for steel structure, by two torsion mechanism, two rotating directions opposite torsion force is applied to steel structure, so as to apply torsion force to steel structure, detect the torsional resistance of steel structure, and by two torque sensors, the force actually applied can be detected, and detection is more direct.

Description

Technical Field

[0001] This utility model relates to the technical field of steel structure testing devices, specifically a deformation resistance testing device for steel structures. Background Technology

[0002] The steel structure deformation resistance testing device is mainly used to evaluate the deformation capacity and stability of steel structures under stress or environmental factors. By applying mechanical force or changing environmental conditions, it tests the degree of deformation, bending strength and overall structural safety of steel components or connection nodes.

[0003] For example, a Chinese patent (publication number: CN219957123U) discloses a steel structure component deformation resistance testing device, which improves testing accuracy and the convenience of testing the deformation resistance of steel structures at different temperatures. It includes a base, two sets of guide rails, two sets of sliders, and two sets of housings. The two sets of guide rails are installed on the top of the base, and the two sets of sliders are slidably installed on the two sets of guide rails respectively. The bottom ends of the two sets of housings are connected to the top ends of the two sets of sliders respectively. It also includes a pressing device, a fixing device, a temperature control device, two sets of support shafts, two sets of support arms, and two sets of support members. The pressing device is located at the top of the base and is used for pressing and testing the steel structure. The two sets of support shafts are installed inside the two sets of housings respectively. The lower parts of the two sets of support arms are rotatably mounted on the two sets of support shafts respectively. The two sets of support members are installed on the top ends of the two sets of support arms, and the fixing devices are installed on the two sets of support members for fixing the two ends of the steel structure.

[0004] However, the detection method of this device is relatively simple, and it can only perform pressure testing on steel structures by pressing the device. However, steel structures are subjected to not only bending stress but also torsional stress in actual use. Therefore, a deformation detection device for steel structures is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a deformation resistance testing device for steel structures, which has advantages such as comprehensive testing capabilities and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a deformation resistance detection device for steel structures, comprising a base, two torsion mechanisms that can provide torsional force to the steel structure are provided on the top of the base, a support frame extending above the torsion mechanisms is fixed on the top of the base, and a pressing component that can increase the downward pressure on the steel structure is provided on the inner bottom wall of the support frame.

[0007] Each of the aforementioned torsion mechanisms includes a drive motor fixed to the top of a base, a reducer fixed to the top of the base, one end of the output shaft of the drive motor fixed to the output end of the reducer, a torque sensor fixed to the top of the base on the side of the reducer away from the drive motor, the input end of the torque sensor fixed to the output end of the reducer, a gripper provided at the output end of the torque sensor, and an electric push rod fixed to the top of the base, the top of the electric push rod abutting against the bottom of the gripper.

[0008] Furthermore, each of the grippers includes a stabilizing frame fixed to the output end of the torque sensor, and a pressure plate is movably connected to the inner side of each stabilizing frame. A threaded rod penetrating the pressure plate is rotatably connected to the inner bottom wall of each stabilizing frame via a bearing, and the two threaded rods are threadedly connected to the two pressure plates respectively.

[0009] Furthermore, each of the stabilizing frames has a T-shaped groove on its inner sidewall, and each of the pressure plates has a T-shaped block extending into the T-shaped groove fixed on the side of the plate closest to the T-shaped groove.

[0010] Furthermore, the pressing assembly includes a hydraulic cylinder fixed to the inner top wall of the support frame, with a fluid delivery pipe fixed to the top of the hydraulic cylinder, penetrating the top wall of the support frame, and a pressure head provided at the output end of the hydraulic cylinder.

[0011] Furthermore, the pressure head includes a connecting sleeve fitted onto the outer surface of the hydraulic cylinder output end. Multiple limiting blocks are fixed inside the connecting sleeve. A connecting bolt penetrating the connecting sleeve and the hydraulic cylinder output end is provided on the right side of the connecting sleeve. A connecting nut that abuts against the outer surface of the connecting sleeve is threaded onto the outer surface of the connecting bolt.

[0012] Furthermore, two auxiliary rods are fixed to the inner top wall of the support frame, the bottom of both auxiliary rods are fixed to the base, and both auxiliary rods are located on the front side of the torsion mechanism.

[0013] Furthermore, the outer surface of the output end of the hydraulic cylinder is provided with multiple limiting grooves, and the multiple limiting blocks extend into the multiple limiting grooves respectively.

[0014] Furthermore, the outer surface of the connecting sleeve has two stabilizing grooves, and the inner sidewalls of the two stabilizing grooves abut against the connecting bolt and the connecting nut, respectively.

[0015] Compared with the prior art, this utility model provides a deformation resistance detection device for steel structures, which has the following beneficial effects:

[0016] 1. This deformation resistance testing device for steel structures applies two torsional forces in opposite directions to the steel structure through two torsion mechanisms, thereby applying torsional force to the steel structure and testing its torsional resistance. Furthermore, the actual applied force can be detected through two torque sensors, making the detection more direct.

[0017] 2. This deformation resistance testing device for steel structures can press down on the steel structure through the pressing component, and clamp the steel structure with two jaws to test the bending resistance of the steel structure. The pressing head is replaceable, making it more flexible to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a three-dimensional cross-sectional view of the pressure head of this utility model.

[0021] In the diagram: 1. Base, 2. Torsion mechanism, 201. Drive motor, 202. Reducer, 203. Torque sensor, 204. Electric actuator, 205. Gripper, 2051. Stabilizing frame, 2052. T-slot, 2053. Pressure plate, 2054. T-block, 2055. Threaded rod, 3. Support frame, 4. Pressing assembly, 401. Hydraulic cylinder, 402. Infusion pipe, 403. Pressure head, 4031. Connecting sleeve, 4032. Limiting block, 4033. Connecting bolt, 4034. Connecting nut. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 2 In this embodiment, a deformation detection device for steel structures includes a base 1. The top of the base 1 is provided with two torsion mechanisms 2 that can provide torsional force to the steel structure. The top of the base 1 is fixed with a support frame 3 that extends above the torsion mechanisms 2. The support frame 3 can provide stable support force for the pressing component 4. The inner bottom wall of the support frame 3 is provided with a pressing component 4 that can increase the downward pressure on the steel structure.

[0024] In addition, each torsion mechanism 2 includes a drive motor 201 fixed to the top of the base 1. A reducer 202 is fixed to the top of the base 1. The reducer 202 is used to reduce the rotational speed and increase the torque, thereby making the output rotational force and rotational speed more suitable for the detection requirements. At the same time, the use of the reducer 202 can effectively reduce the load force on the drive motor 201. One end of the output shaft of the drive motor 201 is fixed to the output end of the reducer 202. A torque sensor 203 is fixed to the top of the base 1 on the side of the reducer 202 away from the drive motor 201. Due to the gripper 205 clamping... With a steel structure, the torque sensor 203 can directly detect the torque output from the reducer 202, making the detection more direct. The torque sensor 203 can be a Lizhun LT-02 static torque sensor or other models, as long as they meet the specific usage requirements. The input end of the torque sensor 203 is fixed to the output end of the reducer 202. The output end of the torque sensor 203 is equipped with a gripper 205. An electric push rod 204 is fixed to the top of the base 1. The top of the electric push rod 204 abuts against the bottom of the gripper 205, and the electric push rod 204 plays an auxiliary support role.

[0025] It should be further explained that each gripper 205 includes a stabilizing frame 2051 fixed to the output end of the torque sensor 203. Each stabilizing frame 2051 has a pressure plate 2053 movably connected to its inner side. When the threaded rod 2055 is rotated, the pressure plate 2053 can move up and down due to the threaded connection, thereby clamping the steel structure. The inner bottom wall of each stabilizing frame 2051 is rotatably connected to a threaded rod 2055 that passes through the pressure plate 2053 through a bearing. The two threaded rods 2055 are threadedly connected to the two pressure plates 2053 respectively.

[0026] It is known that each stabilizing frame 2051 has a T-slot 2052 on its inner sidewall, and each pressure plate 2053 has a T-block 2054 extending into the T-slot 2052 fixed on the side near the T-slot 2052. Through the cooperation of the T-slot 2052 and the T-block 2054, the pressure plate 2053 can be effectively limited, thereby improving the stability of the movement of the pressure plate 2053.

[0027] In addition, two auxiliary rods are fixed to the inner top wall of the support frame 3. The bottom of the two auxiliary rods is fixed to the base 1. The two auxiliary rods are located in front of the torsion mechanism 2. The two auxiliary rods play a supporting role to improve the overall stability of the support frame 3.

[0028] In this embodiment, the torsional performance of the steel structure is detected by two torsion mechanisms 2, and the torsional force on the steel structure is detected by two torque sensors 203. Compared with the installation between the reducer 202 and the drive motor 201, the error caused by the internal loss of the reducer 202 can be avoided.

[0029] Please refer to it again. Figure 1 and Figure 3 In order to test the bending resistance of the steel structure, the pressing component 4 in this embodiment includes a hydraulic cylinder 401 fixed to the inner top wall of the support frame 3. The top of the hydraulic cylinder 401 is fixed with a liquid inlet pipe 402 that penetrates the top wall of the support frame 3. The output end of the hydraulic cylinder 401 is provided with a pressure head 403. One end of the liquid inlet pipe 402 away from the hydraulic cylinder 401 is fixedly connected to a liquid pump, and the other end of the liquid pump is fixedly connected to a liquid tank.

[0030] Furthermore, the pressure head 403 includes a connecting sleeve 4031 sleeved on the outer surface of the output end of the hydraulic cylinder 401. Multiple limiting blocks 4032 are fixed on the inner side of the connecting sleeve 4031. A connecting bolt 4033 penetrating the connecting sleeve 4031 and the output end of the hydraulic cylinder 401 is provided on the right side of the connecting sleeve 4031. The connecting sleeve 4031 is effectively limited by the limiting blocks 4032, the connecting bolt 4033, and the connecting nut 4034, ensuring the connection stability between the connecting sleeve 4031 and the output end of the hydraulic cylinder 401. The outer surface of the connecting bolt 4033 is threaded with a connecting nut 4034 that abuts against the outer surface of the connecting sleeve 4031.

[0031] It is known that the outer surface of the output end of the hydraulic cylinder 401 is provided with multiple limiting grooves, and multiple limiting blocks 4032 extend into the multiple limiting grooves respectively. Through the cooperation of the limiting grooves and the limiting blocks 4032, the connecting sleeve 4031 can be prevented from rotating. The outer surface of the connecting sleeve 4031 is provided with two stabilizing grooves. The inner sidewalls of the two stabilizing grooves abut against the connecting bolt 4033 and the connecting nut 4034 respectively. The stabilizing grooves can increase the contact area between the connecting bolt 4033 and the connecting nut 4034 and the outer surface of the connecting sleeve 4031.

[0032] In this embodiment, the pressure component 4 can apply pressure to the steel structure, thereby causing slight deformation of the steel structure. By recording the pressure output by the hydraulic cylinder 401 and combining it with the degree of deformation of the steel structure, the bending resistance of the steel structure can be detected. The deformation of the steel structure can be detected by strain gauges.

[0033] Understandably, when it is necessary to test the bending resistance of steel structures, two electric actuators 204 are needed to support the two grippers 205 respectively. This can reduce the force on the torque sensor 203, thereby improving the service life of the torque sensor 203. The detachable structure of the pressure head 403 can better meet different needs. Different models of pressure heads 403 can be replaced as needed to improve the flexibility of use.

[0034] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0035] The working principle of the above embodiments is as follows:

[0036] When testing the torsional resistance of a steel structure, the steel structure is first placed on two grippers 205, and the pressure plate 2053 is pressed tightly against the steel structure by rotating the threaded rod 2055. Then, strain gauges are attached to the steel structure, and two drive motors 201 are started in opposite directions at the same time, causing the two grippers 205 to rotate in opposite directions, thereby torsioning the steel structure. The deformation of the steel structure is recorded by the strain gauges, and the torsional torque is recorded by the torque sensor 203, thus testing the torsional resistance of the steel structure. When testing the bending resistance of a steel structure, the steel structure is first placed on two grippers 205 and clamped. Then, the pressure head 403 is driven by the hydraulic cylinder 401 to press down, applying downward pressure to the steel structure, thus testing the bending resistance of the steel structure.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] 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.

Claims

1. A deformation detection device for steel structures, comprising a base (1), characterized in that: The base (1) is provided with two torsion mechanisms (2) that can provide torsional force to the steel structure. The base (1) is fixed with a support frame (3) extending above the torsion mechanism (2). The inner bottom wall of the support frame (3) is provided with a pressing component (4) that can increase the downward pressure on the steel structure. Each of the torsion mechanisms (2) includes a drive motor (201) fixed to the top of the base (1), a reducer (202) fixed to the top of the base (1), one end of the output shaft of the drive motor (201) fixed to the output end of the reducer (202), a torque sensor (203) fixed to the top of the base (1) and on the side of the reducer (202) away from the drive motor (201), the input end of the torque sensor (203) fixed to the output end of the reducer (202), the output end of the torque sensor (203) provided with a gripper (205), an electric push rod (204) fixed to the top of the base (1), the top of the electric push rod (204) abutting against the bottom of the gripper (205).

2. The deformation resistance detection device for steel structures according to claim 1, characterized in that: Each of the grippers (205) includes a stabilizing frame (2051) fixed to the output end of the torque sensor (203). Each stabilizing frame (2051) has a pressure plate (2053) movably connected to its inner side. The inner bottom wall of each stabilizing frame (2051) is rotatably connected to a threaded rod (2055) that passes through the pressure plate (2053) via a bearing. The two threaded rods (2055) are threadedly connected to the two pressure plates (2053) respectively.

3. The deformation resistance detection device for steel structures according to claim 2, characterized in that: Each of the stabilizers (2051) has a T-slot (2052) on its inner sidewall, and each of the pressure plates (2053) has a T-block (2054) extending into the T-slot (2052) fixed on the side of the plate (2053) near the T-slot (2052).

4. The deformation resistance detection device for steel structures according to claim 1, characterized in that: The pressing assembly (4) includes a hydraulic cylinder (401) fixed to the inner top wall of the support frame (3). The top of the hydraulic cylinder (401) is fixed with an infusion pipe (402) that penetrates the top wall of the support frame (3). The output end of the hydraulic cylinder (401) is provided with a pressure head (403).

5. The deformation resistance detection device for steel structures according to claim 4, characterized in that: The pressure head (403) includes a connecting sleeve (4031) sleeved on the outer surface of the output end of the hydraulic cylinder (401). Multiple limiting blocks (4032) are fixed on the inner side of the connecting sleeve (4031). A connecting bolt (4033) penetrating the connecting sleeve (4031) and the output end of the hydraulic cylinder (401) is provided on the right side of the connecting sleeve (4031). A connecting nut (4034) that abuts against the outer surface of the connecting sleeve (4031) is threaded on the outer surface of the connecting bolt (4033).

6. The deformation resistance detection device for steel structures according to claim 1, characterized in that: The inner top wall of the support frame (3) is fixed with two auxiliary rods. The bottom of the two auxiliary rods is fixed to the base (1). The two auxiliary rods are located in front of the torsion mechanism (2).

7. The deformation resistance detection device for steel structures according to claim 5, characterized in that: The outer surface of the output end of the hydraulic cylinder (401) is provided with multiple limiting grooves, and multiple limiting blocks (4032) extend into the multiple limiting grooves respectively.

8. The deformation resistance detection device for steel structures according to claim 5, characterized in that: The outer surface of the connecting sleeve (4031) has two stabilizing grooves, and the inner sidewalls of the two stabilizing grooves abut against the connecting bolt (4033) and the connecting nut (4034) respectively.

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