Portable self-balancing friction damper performance testing device and testing method

Abstract

The invention relates to a portable self-balancing friction damper performance testing device and a testing method, and belongs to the civil engineering industry. The invention discloses a portable self-balancing loading device designed for a friction damper performance test. The portable self-balancing loading device is characterized by comprising a steel column, a steel cross beam, a bottom beam, a ground anchor, a horizontal actuator, a T-shaped connecting plate, a screw A, a screw B, a load sensor, a pi-shaped connecting plate A, a pi-shaped connecting plate B, a friction damper, a roller, a connecting base, a small connecting plate, a data line, a data acquisition instrument and a computer, most components are connected through bolts, and when the T-shaped connecting plate is subjected to force from the horizontal actuator, the pulleys only slide in the grooves of the connecting base, so that axial stretching compression deformation is achieved. And meanwhile, the groove connected with the base plays a role in limiting the vertical direction of the roller, so that out-of-plane instability of the device is prevented. Aiming at the current situation that the existing friction damper performance testing device is inconvenient to move and carry and cannot be self-balanced, the invention provides the portable self-balancing friction damper performance testing device and the testing method, the structure is simple, the movement and the installation are convenient, and the efficiency of testing the friction damper can be greatly improved.

Description

Technical Field

[0001] The invention patent of this type is a portable self - balancing friction damper performance testing device and testing method, belonging to the civil engineering industry. Background Art

[0002] Friction dampers are widely used in the field of structural shock absorption and have developed rapidly. Friction dampers dissipate energy through the relative sliding between friction plates, and have advantages such as simple structure, easy material selection, and low cost. The friction damper loading device can test the comprehensive performance of the friction damper, which plays an important role in accurately testing the performance of the friction damper and improving the device.

[0003] To test the comprehensive performance of the friction damper, a dynamic loading experiment needs to be carried out on it using a friction damper loading device. However, most of the existing friction damper performance testing loading devices are large in volume, heavy in weight, cannot be disassembled, and require external support connections or reaction walls to maintain the balance of the device, which is not convenient for moving and carrying and cannot achieve self - balance.

[0004] Content of the Invention Patent

[0005] The invention patent of this type provides a portable self - balancing friction damper performance testing device and testing method for the above - mentioned problems.

[0006] The invention patent of this type adopts the following technical solutions:

[0007] A portable self - balancing friction damper performance testing device and testing method described in the invention patent of this type include a steel column, a steel cross - beam, a bottom beam, a ground anchor, a horizontal actuator, a T - shaped connecting plate, screw A, screw B, a load sensor, a π - shaped connecting plate A, a π - shaped connecting plate B, a friction damper, rollers, a connecting base, a small connecting plate, a data line, a data acquisition instrument, and a computer.

[0008] In the portable self - balancing friction damper performance testing device and testing method described in the invention patent of this type, the steel column, the steel cross - beam, and the bottom beam are all connected by bolts, so that the testing device is easy to install and can be moved and carried.

[0009] In the portable self - balancing friction damper performance testing device and testing method described in the invention patent of this type, the surface of the connecting base is provided with a groove for the rollers to slide. The rollers are fixed on the small connecting plate through a pin shaft. The small connecting plate is welded to the bottom of the T - shaped connecting plate. The rollers are installed in the groove of the connecting base, and the T - shaped connecting plate is bolt - connected to the horizontal actuator. When the T - shaped connecting plate receives a force from the horizontal actuator, the pulleys will slide in the groove of the connecting base, so as to realize axial tensile and compressive deformation. At the same time, the groove of the connecting base plays a role in restricting the vertical movement of the rollers, preventing the out - of - plane instability of the device.

[0010] A portable self - balancing friction damper performance testing device and testing method according to the invention - type patent. Threaded structures of a certain length are provided at both ends of the screw A and the screw B. Circular holes with threaded structures are opened at the centers of the front and back surfaces of the load sensor. One end of the screw A is connected to the T - shaped connecting plate, and the other end is connected to the load sensor; one end of the screw B is connected to the π - shaped connecting plate A, and the other end is connected to the load sensor.

[0011] A portable self - balancing friction damper performance testing device and testing method according to the invention - type patent. The horizontal actuator and the π - shaped connecting plate B are both bolt - connected to the steel column. The friction damper is installed between the π - shaped connecting plate A and the π - shaped connecting plate B. Since the connections between the horizontal actuator, the π - shaped connecting plate B and the steel column are all bolt - connections, the testing device can achieve self - balancing.

[0012] A portable self - balancing friction damper performance testing device and testing method according to the invention - type patent. The installation method of the loading device is as follows:

[0013] (1) Bolt - connect the bottoms of the two steel columns to the bottom beam and the tops to the steel cross - beam, and fix the two steel columns to the ground with ground anchors.

[0014] (2) Bolt - connect the connection base to the bottom beam. The roller is fixed to the small connecting plate through a pin shaft. The small connecting plate is welded to the bottom plate of the T - shaped connecting plate, and the roller is installed in the groove of the connection base.

[0015] (3) Bolt - connect one end of the horizontal actuator to the steel column and the other end to the T - shaped connecting plate.

[0016] (4) Connect one end of the screw A to the T - shaped connecting plate and the other end to the load sensor.

[0017] (5) Connect one end of the screw B to the load sensor and the other end to the π - shaped connecting plate A.

[0018] (6) Bolt - connect the ∏ - shaped connecting plate B to the steel column.

[0019] (7) Install the friction damper between the π - shaped connecting plate A and the π - shaped connecting plate B.

[0020] 7 A portable self - balancing friction damper performance testing device and testing method according to the invention - type patent, the

[0021] testing method is as follows:

[0022] (1) Turn on the horizontal actuator and zero the load sensor.

[0023] (2) Connect the load sensor, data collector, and computer with a data cable.

[0024] (3) Use the computer to control the data collector to zero.

[0025] (4) Start the test. During the reciprocating process of the horizontal actuator, the data collector records the value on the load sensor,

[0026] which is the sliding friction force f of the friction damper.

[0027] (5) According to the bolt pre-tightening force element on the friction damper that has been determined, the friction formula on the friction damper can be obtained:

[0028]

[0029] Beneficial effects

[0030] In view of the current situation of the existing friction damper loading device, which is large in volume, heavy in weight, cannot be disassembled, and requires external support connection or reaction wall to maintain the balance of the device, the present invention provides a device that can be easily transported and carried, can self-balance, and can achieve axial tensile and compressive deformation. The structure is simple and the installation is convenient, which can greatly improve the efficiency of testing the friction damper. Description of the drawings

[0031] Figure 1 is the overall structural schematic diagram of the present invention;

[0032] Figure 2 is the schematic diagram of the T-shaped connecting plate of the present invention;

[0033] Figure 3 is the overall top view of the present invention;

[0034] Figure 4 is the exploded view of the structure of the present invention;

[0035] In the figure: 1 - steel column; 2 - steel cross beam; 3 - bottom beam; 4 - ground anchor; 5 - horizontal actuator; 6 - T-shaped connecting plate; 7 - screw A; 8 - screw B; 9 - load sensor; 10 - π-shaped connecting plate A; 11 - ∏-shaped connecting plate B; 12 - friction damper; 13 - roller; 14 - connecting base; 15 - small connecting plate; 16 - data cable; 17 - data collector; 18 - computer. Detailed implementation manners

[0036] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings in this embodiment. Obviously, the described embodiments are only a part of the embodiments of this embodiment, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] As Figure 1 shown: The portable self - balancing friction damper performance test device and test method include: 1 - steel column; 2 - steel cross - beam; 3 - bottom beam; 4 - ground anchor; 5 - horizontal actuator; 6 - T - shaped connecting plate; 7 - screw A; 8 - screw B; 9 - load sensor; 10 - π - shaped connecting plate A; 11 - π - shaped connecting plate B; 12 - friction damper; 13 - roller; 14 - connecting base; 15 - small connecting plate; 16 - data line; 17 - data collector; 18 - computer.

[0038] The steel column 1, the steel cross - beam 2, and the bottom beam 3 are all connected by bolts, so that the test device is easy to install and can be moved and carried.

[0039] The surface of the connecting base 14 is provided with a groove for the roller 13 to slide. The roller 13 is fixed on the small connecting plate 15 through a pin shaft. The small connecting plate 15 is welded to the bottom of the T - shaped connecting plate 6. The roller 13 is installed in the groove of the connecting base 14, and the T - shaped connecting plate 6 is bolt - connected to the horizontal actuator 5. When the T - shaped connecting plate 6 receives a force from the horizontal actuator 5, the pulley 13 will slide in the groove of the connecting base 14, so as to realize axial tensile and compressive deformation. At the same time, the groove of the connecting base 14 plays a role in fixing the roller 13 in the horizontal direction, preventing the out - of - plane instability of the device.

[0040] Both ends of the screw A7 and the screw B8 are provided with a threaded structure of a certain length. The front and back centers of the load sensor 9 are provided with round holes with a threaded structure. One end of the screw A7 is connected to the T - shaped connecting plate 6, and the other end is connected to the load sensor 9; one end of the screw B8 is connected to the π - shaped connecting plate A10, and the other end is connected to the load sensor 9.

[0041] The horizontal actuator 5 and the ∏ - shaped connecting plate B11 are both bolt - connected to the steel column 1, and the friction damper 12 is installed between the π - shaped connecting plate A10 and the π - shaped connecting plate B11. Because the connections between the horizontal actuator 5, the π - shaped connecting plate B11 and the steel column 1 are all bolt - connections, the test device can achieve self - balancing.

[0042] The usage method of the portable self - balancing friction damper performance test device and test method is as follows:

[0043] (1) Bolt - connect the bottoms of the two steel columns 1 to the bottom beam 3 and the tops to the steel cross - beam 2, and fix the two steel columns 1 to the ground with the ground anchor 4.

[0044] (2) Bolt-connect the connecting base 14 to the bottom beam 3. Fix the roller 13 on the small connecting plate 15 through a pin shaft. The small connecting plate 15 is welded to the bottom plate of the T-shaped connecting plate 6. The roller 13 is installed in the groove of the connecting base 14.

[0045] (3) Bolt-connect one end of the horizontal actuator 5 to the steel column 1 and the other end to the T-shaped connecting plate 6.

[0046] (4) Connect one end of the screw A7 to the T-shaped connecting plate 6 and the other end to the load sensor 9.

[0047] (5) Connect one end of the screw B8 to the load sensor 9 and the other end to the π-shaped connecting plate A10.

[0048] (6) Bolt-connect the ∏-shaped connecting plate B11 to the steel column 1.

[0049] (7) Install the friction damper 12 between the π-shaped connecting plate A10 and the π-shaped connecting plate B11.

[0050] Portable self-balancing friction damper performance test device and test method. The test method is as follows:

[0051] (1) Turn on the horizontal actuator 5 and zero the load sensor 9.

[0052] (2) Connect the load sensor 9, the data collector 17, and the computer 18 with the data cable 16.

[0053] (3) Use the computer to control the data acquisition instrument to zero.

[0054] (4) Start the test. During the reciprocating process of the horizontal actuator 5, the data acquisition instrument records the value on the load sensor 9, which is the sliding friction force f of the friction damper.

[0055] (5) According to the bolt pre-tightening force element of the friction damper that has been determined, the friction formula of the friction damper can be obtained:

[0056]

[0057] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A portable self - balancing friction damper performance testing device, characterized in that: The device includes a steel column (1), a steel cross - beam (2), a bottom beam (3), a ground anchor (4), a horizontal actuator (5), a T - shaped connecting plate (6), a screw A (7), a screw B (8), a load sensor (9), a π - shaped connecting plate A (10), a π - shaped connecting plate B (11), a friction damper (12), a roller (13), a connecting base (14), a small connecting plate (15), a data line (16), a data acquisition instrument (17), and a computer (18).

2. The portable self - balancing friction damper performance testing device according to claim 1, characterized in that: The steel column (1), the steel cross - beam (2), and the bottom beam (3) are all connected by bolts, so that the testing device is easy to install and can be moved and carried.

3. The portable self - balancing friction damper performance testing device according to claim 1, characterized in that: The surface of the connecting base (14) is provided with a groove for the roller (13) to slide. The roller (13) is fixed on the small connecting plate (15) by a pin shaft. The small connecting plate (15) is welded to the bottom of the T - shaped connecting plate (6). The roller (13) is installed in the groove of the connecting base (14). The T - shaped connecting plate (6) is bolt - connected to the horizontal actuator (5). When the T - shaped connecting plate (6) receives a force from the horizontal actuator (5), the pulley (13) will slide in the groove of the connecting base (14), so as to realize axial tensile and compressive deformation. At the same time, the groove of the connecting base (14) plays a role in horizontally fixing the roller (13) to prevent the device from losing stability out of the plane.

4. The portable self - balancing friction damper performance testing device according to claim 1, characterized in that: Both ends of the screw A (7) and the screw B (8) are provided with a threaded structure of a certain length. The front and back centers of the load sensor (9) are provided with round holes with a threaded structure. One end of the screw A (7) is connected to the T - shaped connecting plate (6), and the other end is connected to the load sensor (9); one end of the screw B (8) is connected to the π - shaped connecting plate A (10), and the other end is connected to the load sensor (9).

5. The portable self - balancing friction damper performance testing device according to claim 1, characterized in that: The horizontal actuator (5) and the π - shaped connecting plate B (11) are both bolt - connected to the steel column (1). The friction damper (12) is installed between the π - shaped connecting plate A (10) and the π - shaped connecting plate B (11). Because the connections between the horizontal actuator (5), the π - shaped connecting plate B (11) and the steel column (1) are all bolt - connections, the testing device can achieve self - balancing.

6. The portable self - balancing friction damper performance testing device according to claim 1, characterized in that: The installation method of the loading device is as follows: (1) Bolt - connect the bottoms of the two steel columns (1) to the bottom beam (3), and bolt - connect the tops to the steel cross - beam (2). Fix the two steel columns (1) to the ground with ground anchors (4). (2) Bolt-connect the connecting base (14) to the bottom beam (3). Fix the roller (13) to the small connecting plate (15) through a pin shaft. The small connecting plate (15) is welded to the bottom plate of the T-shaped connecting plate. The roller (13) is installed in the groove of the connecting base (14). (3) Bolt-connect one end of the horizontal actuator (5) to the steel column (1) and the other end to the T-shaped connecting plate (6). (4) Connect one end of the screw A (7) to the T-shaped connecting plate (6) and the other end to the load sensor (9). (5) Connect one end of the screw B (8) to the load sensor (9) and the other end to the π-shaped connecting plate A (10). (6) Bolt-connect the ∏-shaped connecting plate B (11) to the steel column (1). (7) Install the friction damper (12) between the π-shaped connecting plate A (10) and the π-shaped connecting plate B (11).

7. A portable self-balancing friction damper performance testing device according to claim 1, characterized in that: The testing method is as follows: (1) Turn on the horizontal actuator (5) and zero the load sensor (9). (2) Connect the load sensor (9), the data collector (17), and the computer (18) with a data cable (16). (3) Use the computer to control the data acquisition instrument to zero. (4) The test starts. During the reciprocating process of the horizontal actuator (5), the data acquisition instrument records the value on the load sensor (9), which is the sliding friction force f of the friction damper. (5) According to the predetermined bolt pre-tightening force element on the friction damper, the friction formula on the friction damper can be obtained:

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