Steel structure connection node strength experiment device

Abstract

The utility model discloses a steel structure connection node strength experiment device which comprises an experiment table, two symmetrical limiting grooves are formed in the upper surface of the experiment table, the bottom face of the experiment table is fixedly connected with two symmetrical side plates, a first motor is fixedly installed on the side faces of the side plates, and the output end of the first motor is fixedly connected with a two-way threaded column. A transmission wheel is arranged on the outer side of the two-way threaded column, a transmission belt is arranged on the transmission wheel, a clamping plate is arranged on the outer side of the transmission wheel, the top of the clamping plate is in threaded connection with the outer side of a threaded rod, the bottom face of the threaded rod is fixedly connected with a pressing plate, and the upper surface of the experiment table is fixedly connected with a supporting frame. Different T-shaped steel structures are clamped and fixed in the middle through the bidirectional threaded column, the transmission wheel, the transmission belt, the clamping plate and the pressing plate, the application range of the device is widened, the detection precision is improved, the height of the detection air cylinder can be adjusted through the lifting plate, the limiting rod and the detection air cylinder, and the detection precision is improved. And the situation that the detection result is unreliable due to uneven stress at different heights is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure connection detection, in particular to a steel structure connection node strength test device. Background Art

[0002] Steel structure is a structure made of steel material and is one of the main types of building structures. Steel structure often forms a grid structure for support and fixation, that is, a spatial structure formed by many rods connected by nodes in a certain grid form. Its advantages are good structural integrity and strong spatial force. Most T-shaped structures in grid structures are connected by bolts, so it is necessary to test the strength of the nodes where the bolts are connected.

[0003] According to the publication number CN216410872 U, a "steel structure power connection bolt strength detection device" is disclosed. The patent includes a load-bearing component and a clamping test component. The output power of the detection cylinder is used to detect the strength of the connection to improve the accuracy of the detection result. The T-shaped steel structure is fixed by a fixing plate and a sliding plate. However, it has the following defects: the above patent cannot effectively clamp and fix T-shaped steel structures of different lengths, and its use has limitations. In addition, the position of the detection point in the experiment has a greater impact on the experimental results, and the detection point is fixed and cannot effectively meet the needs of T-shaped steel structures of different sizes. Utility Model Content

[0004] The utility model aims to provide a steel structure connection node strength test device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure connection node strength test device, comprising a test bench, the upper surface of the test bench is provided with two symmetrical limit grooves, the bottom surface of the test bench is fixedly connected to two symmetrical side panels, a motor 1 is fixedly installed on the side of the side panel, the output end of the motor 1 is fixedly connected to a bidirectional threaded column, a transmission wheel is arranged on the outer side of the bidirectional threaded column, a transmission belt is arranged on the transmission wheel, a clamping plate is arranged on the outer side of the transmission wheel, the top of the clamping plate is threadedly connected to the outer side of the threaded rod, the bottom surface of the threaded rod is fixedly connected to a pressing plate, the upper surface of the test bench is fixedly connected to a support frame, the support frame is rotatably connected to one end of a screw rod, a motor 2 is fixedly installed on the bottom surface of the test bench, a lifting plate is arranged on the outer side of the screw rod, the bottom surface of the support frame is fixedly connected to one end of a limit rod, and a detection cylinder is fixedly installed on the side of the limit rod.

[0006] Preferably, the inner diameter of the limiting groove is matched with the outer diameter of the clamping plate, and the clamping plate is slidably connected to the inside of the limiting groove.

[0007] Preferably, opposite threads are provided on both sides of the bidirectional threaded column. There are two clamping plates, which are located on both sides of the bidirectional threaded column and are symmetrically distributed. The clamping plates are threadedly connected to the bidirectional threaded column through threaded holes.

[0008] Preferably, there are two bidirectional threaded columns and two transmission wheels. The transmission wheels are located on the same side of the bidirectional threaded column, and the transmission wheels are connected to each other through a transmission belt.

[0009] Preferably, the shape of the support frame is "C"-shaped, and the lead screw and the limit rod are respectively located on both sides of the support frame.

[0010] Preferably, the lifting plate is threadedly connected to the outside of the lead screw through a threaded hole, and the lifting plate is slidably connected to the outside of the limit rod through a circular through hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By providing a test bench, a limit groove, a first motor, a bidirectional threaded column, a transmission wheel, a transmission belt, a clamping plate and a pressing plate, the present utility model can clamp and fix T-shaped steel structures of different sizes and lengths, enhancing the applicable range of the overall device. The synchronous movement of the two clamping plates can center and fix the T-shaped steel structure, so that the detection point is located at the center, improving the detection accuracy. At the same time, the pressing plate can limit the top of the T-shaped steel structure to prevent翘起 during detection.

[0013] 2. The present utility model also effectively adjusts the height of the detection cylinder by providing a support frame, a lifting plate, a limit rod and a detection cylinder, so as to adjust the detection height of the T-shaped steel structure, avoiding the situation that the detection result is unreliable due to uneven force at different heights, and enhancing the applicability of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 is a partial structural sectional view of the present utility model;

[0017] Figure 4 is a schematic diagram of the connection structure of the lifting plate of the present utility model.

[0018] In the figure: 1. Experimental table; 2. Limiting groove; 3. Side panel; 4. Motor 1; 5. Bidirectional threaded column; 6. Transmission wheel; 7. Transmission belt; 8. Clamping plate; 9. Threaded rod; 10. Pressing plate; 11. Support frame; 12. Screw rod; 13. Motor 2; 14. Lifting plate; 15. Limiting rod; 16. Detection cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: a steel structure connection node strength test device, including a test bench 1, two symmetrical limit grooves 2 are set on the upper surface of the test bench 1, the limit grooves 2 are rectangular grooves, the bottom surface of the test bench 1 is welded and fixed to the tops of two symmetrical side panels 3, the side surfaces of the side panels 3 are fixedly connected to one end of a motor 4, the output end of the motor 4 is welded and fixed to a bidirectional threaded column 5 through a coupling, the outer side of the bidirectional threaded column 5 is welded and fixed to a transmission wheel 6, the number of the transmission wheels 6 is two, and the transmission wheels 6 are connected through a transmission belt 7, the outer side of the transmission wheel 6 is threadedly connected to two symmetrical clamping plates 8, and the top of the clamping plate 8 extends to the test bench 1. The top of the table 1 is threadedly connected to the outer side of the threaded rod 9, the shape of the clamping plate 8 is L-shaped, the bottom surface of the threaded rod 9 extends to the bottom of the clamping plate 8 and is welded and fixed to the pressure plate 10, the upper surface of the experimental table 1 is welded and fixed to the support frame 11, the support frame 11 is rotatably connected to one end of the screw rod 12, the bottom surface of the experimental table 1 is fixedly connected to the top of the motor 2 13, the output end of the motor 2 13 is fixedly connected to the screw rod 12, the outer side of the screw rod 12 is threadedly connected to the lifting plate 14, the bottom surface of the support frame 11 is welded and fixed to one end of the limit rod 15, the side of the limit rod 15 is fixedly connected to one end of the detection cylinder 16 by bolts, and the output end of the detection cylinder 16 is fixedly connected to the contact plate.

[0021] The inner diameter dimension of the limit groove 2 is adapted to the outer diameter dimension of the clamping plate 8, and the clamping plate 8 is slidably connected to the inside of the limit groove 2. Opposite threads are provided on both sides of the bidirectional threaded column 5. The number of clamping plates 8 is two. The clamping plates 8 are located on both sides of the bidirectional threaded column 5 and are symmetrically distributed. The clamping plates 8 are threadedly connected to the bidirectional threaded column 5 through threaded holes. By driving the first motor 4, the bidirectional threaded column 5 rotates. Further, the rotation of the bidirectional threaded column 5 causes the transmission wheels 6 on both sides to move synchronously towards or away from each other, thereby realizing the clamping and fixing of the T-shaped steel structure and convenient taking. At the same time, the synchronous movement of the transmission wheels 6 can ensure that the T-shaped steel structure is always fixed at the center position, so as to ensure that the output end of the center position detection cylinder 16 corresponds to the T-shaped steel structure, thereby improving the accuracy of strength detection. The number of both the bidirectional threaded column 5 and the transmission wheels 6 is two. The transmission wheels 6 are located on the same side of the bidirectional threaded column 5, and the transmission wheels 6 are connected to each other through a transmission belt 7. The rotation of the bidirectional threaded column 5 causes the transmission wheels 6 to rotate synchronously. Under the action of the transmission belt 7, the bidirectional threaded columns 5 on both sides rotate synchronously, thereby clamping and fixing both sides of the T-shaped steel structure. The shape of the support frame 11 is "匚"-shaped. The lead screw 12 and the limit rod 15 are respectively located on both sides of the support frame 11. The lifting plate 14 is threadedly connected to the outside of the lead screw 12 through a threaded hole, and the lifting plate 14 is slidably connected to the outside of the limit rod 15 through a circular through hole. By driving the second motor 13, the lead screw 12 rotates, so that the lifting plate 14 moves up and down on the surface of the limit rod 15, changing the detection point of the T-shaped steel structure, so as to improve the reliability of the experimental device results.

[0022] Working principle: When in use, the staff places the T-shaped steel structure on the upper surface of the experimental table 1 and between the two clamping plates 8. The first driving motor 4 rotates the bidirectional threaded column 5, further causing the transmission wheels 6 on both sides of the bidirectional threaded column 5 to move synchronously towards the inside. The bidirectional threaded column 5 drives the transmission wheels 6 to rotate synchronously. Driven by the transmission belt 7, the bidirectional threaded columns 5 on both sides rotate synchronously until the transmission wheels 6 clamp and fix both sides of the T-shaped steel structure, and the T-shaped steel structure is fixed at the center through the transmission wheels 6. At the same time, the pressing plate 10 is used to fix the top surface of the T-shaped steel structure to avoid the situation that one end of the T-shaped steel structure warps during detection. By driving the second motor 13, the lead screw 12 rotates, further causing the lifting plate 14 to move up and down under the limiting action of the limit rod 15 until the target height. Then, the detection cylinder 16 is driven to make the contact plate fixed to the T-shaped steel structure, and the connection node strength of the steel structure is detected through the output power of the detection cylinder 16.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure connection node strength test device, comprising a test bench (1), characterized in that: On the upper surface of the test bench (1), two symmetric limiting grooves (2) are provided. The bottom surface of the test bench (1) is fixedly connected to two symmetric side plates (3). A first motor (4) is fixedly installed on the side surface of the side plate (3). The output end of the first motor (4) is fixedly connected to a bidirectional threaded rod (5). A transmission wheel (6) is arranged outside the bidirectional threaded rod (5). A transmission belt (7) is arranged on the transmission wheel (6). A clamping plate (8) is arranged outside the transmission wheel (6). The top of the clamping plate (8) is threadedly connected to the outside of a threaded rod (9). The bottom surface of the threaded rod (9) is fixedly connected to a pressing plate (10). The upper surface of the test bench (1) is fixedly connected to a support frame (11). One end of a lead screw (12) is rotatably connected to the support frame (11). A second motor (13) is fixedly installed on the bottom surface of the test bench (1). A lifting plate (14) is arranged outside the lead screw (12). One end of a limiting rod (15) is fixedly connected to the bottom surface of the support frame (11). A detection cylinder (16) is fixedly installed on the side surface of the limiting rod (15).

2. A steel structure connection node strength test device according to claim 1, characterized in that: The inner diameter dimension of the limiting groove (2) is adapted to the outer diameter dimension of the clamping plate (8). The clamping plate (8) is slidably connected to the inside of the limiting groove (2).

3. A steel structure connection node strength test device according to claim 1, characterized in that: Threads on both sides of the bidirectional threaded rod (5) are opposite. The number of the clamping plates (8) is two. The clamping plates (8) are located on both sides of the bidirectional threaded rod (5) and are symmetrically distributed. The clamping plates (8) are threadedly connected to the bidirectional threaded rod (5) through threaded holes.

4. A steel structure connection node strength test device according to claim 1, characterized in that: The number of both the bidirectional threaded rod (5) and the transmission wheel (6) is two. The transmission wheels (6) are located on the same side of the bidirectional threaded rod (5). The transmission wheels (6) are connected to each other through a transmission belt (7).

5. A steel structure connection node strength test device according to claim 1, characterized in that: The shape of the support frame (11) is "匚". The lead screw (12) and the limiting rod (15) are respectively located on both sides of the support frame (11).

6. A steel structure connection node strength test device according to claim 1, characterized in that: The lifting plate (14) is threadedly connected to the outside of the lead screw (12) through a threaded hole. The lifting plate (14) is slidably connected to the outside of the limiting rod (15) through a circular through hole.

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