An experimental device for the interference effect of a building structure

Abstract

The present invention belongs to the technical field of building experimental devices, and specifically relates to an experimental device for the interference effect of building structures, including an experimental table; a vibration model is arranged in the middle of the top surface of the experimental table, vibration holes are respectively opened in the middle of the bottom surface of the vibration model and the corresponding experimental table, annular grooves are respectively opened on the top surface and the bottom surface of the experimental table where the vibration model is located, and a rotating ring and an annular sleeve are respectively rotatably connected in the annular grooves on the top surface and the bottom surface of the experimental table. Magnetic plates are respectively inlaid and installed at the bottom end of the rotating ring and the top end of the annular sleeve. A linear motor is arranged inside the annular sleeve, a vibration rod is connected to the end of the linear motor, and a test model is arranged on one side of the vibration model; the present invention enables the working angle of the vibration generating device to be adjusted conveniently and quickly, improves the working efficiency of the experimental device, and simplifies the internal structure and installation process of the annular sleeve.

Description

Technical Field

[0001] The present invention belongs to the technical field of building experimental devices, and specifically relates to an experimental device for the interference effect of building structures. Background Technique

[0002] Dense super high-rise building groups are one of the important symbols of modern metropolises. The aerodynamic interference effect between group high-rise buildings is very complex. Although a large number of studies have been carried out on the aerodynamic interference effect between group high-rise buildings, there are still some deficiencies. For example, the wind-induced interference effect during the vibration of the building (unsteady effect) is not yet clear, and the existing experimental devices cannot be equivalent when the building complex produces interference effects.

[0003] A Chinese patent with the publication number CN112562483B discloses an experimental device for the interference effect of building structures under the influence of forced vibration, including an experimental table located in the wind field. A circular through hole is opened in the center of the experimental table, and a vibration model is fixed at the center of the experimental table. The vibration model covers the through hole. A vibration hole is opened at the bottom of the vibration model, and the diameter of the vibration hole is smaller than that of the through hole; a test model is also arranged on the experimental table, and vibration sensors and wind pressure sensors are arranged on both the test model and the vibration model; a vibration generating device is arranged at the bottom of the experimental table. The vibration generating device includes a base arranged on the lower surface of the experimental table. A horizontal sliding groove is opened on the base, and a sliding seat is slidably connected in the sliding groove. Symmetrically arranged springs are fixed on both sides of the sliding seat. The springs are all parallel to the sliding groove, and the free ends of the springs are fixed on the sliding seat; the present invention aims to solve the problem that the existing experimental device cannot simulate the wind-induced interference effect in the case of building complex vibration.

[0004] However, when the working angle of the vibration generating device in the above technology is adjusted to improve the analysis accuracy of the wind-induced interference effect of the building complex, since the annular plate is arranged at the bottom of the experimental table, it is difficult for the staff to rotate the annular plate conveniently and quickly, which affects the convenience of the experimental device during operation.

[0005] Therefore, the present invention provides an experimental device for the interference effect of building structures. Summary of the Invention

[0006] In order to make up for the deficiencies of the existing technology and solve at least one technical problem proposed in the background technique.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: An experimental device for the interference effect of a building structure according to the present invention includes an experimental table located in a wind field; a vibration model is provided in the middle of the top surface of the experimental table, and vibration holes communicating with each other are respectively opened in the middle of the bottom surface of the vibration model and the corresponding experimental table. Annular grooves are respectively opened on the top and bottom surfaces of the experimental table at the vibration model. A rotating ring and an annular sleeve are respectively rotatably connected in the annular grooves on the top and bottom surfaces of the experimental table. Magnetic plates are respectively inlaid and installed at the bottom end of the rotating ring and the top end of the annular sleeve, and the magnetic poles of the ends of the two magnetic plates close to each other are opposite. A linear motor is provided inside the annular sleeve, and the end of the linear motor is connected with a vibration rod passing through the vibration hole. A test model is provided on the experimental table on one side of the vibration model. Vibration sensors and wind pressure sensors are arranged on both the vibration model and the test model; when the working angle of the vibration generating device in the prior art is adjusted to improve the analysis accuracy of the wind-induced interference effect of the building group, since the annular plate is arranged at the bottom of the experimental table, it is difficult for the staff to rotate the annular plate conveniently and quickly, which affects the convenience of the experimental device during operation; when the experimental device of the present invention is used, due to the mutual attraction of the magnetic plates on the rotating ring and the annular sleeve, the rotating ring and the annular sleeve can be stably fixed in the two annular grooves. When the linear motor works, it can drive the vibration rod to reciprocally impact the side wall of the vibration hole at the vibration model, thereby forcing the vibration model to vibrate. At this time, the test model is also affected and vibrates. Then, the vibration sensors and wind pressure sensors are used to detect the vibration model and the test model, so as to collect the wind pressure intensity and vibration intensity on the surfaces of the vibration model and the test model under the vibration condition, and further be able to simulate and analyze the wind-induced interference effect between the buildings under the vibration condition. When it is necessary to adjust the position of the linear motor, at this time, only the rotating ring on the top surface of the experimental table needs to be rotated, so that the rotating ring can drive the annular sleeve to rotate in the corresponding annular groove through the mutually attracting magnetic plates when rotating, thereby being able to conveniently and quickly adjust the working angle of the vibration generating device inside the annular sleeve, improving the working efficiency of the experimental device. At the same time, the attraction of the two magnetic plates can overcome the gravity of the annular sleeve itself, so that a vertical limiting mechanism does not need to be set on the annular sleeve during operation, thereby simplifying the internal structure and installation process of the annular sleeve.

[0008] Preferably, electric push rods are symmetrically installed on the bottom surface of the test bench corresponding to both sides of the annular sleeve. The end parts of the electric push rods are respectively connected with semi-circular plates that match the shape of the outer wall of the annular sleeve. The magnetic plates on the rotating ring and the annular sleeve are arranged in a circular and evenly distributed manner. After the working angle of the annular sleeve is adjusted, the electric push rods can drive the semi-circular plates to approach each other and clamp the annular sleeve, improving the stability of the annular sleeve during operation. At the same time, when it is necessary to disassemble the annular sleeve from the annular groove, only the rotating ring needs to be rotated at this time, so that the magnetic plates on the rotating ring and the magnetic plates on the annular sleeve are misaligned and no longer adsorbed. After the semi-circular plates no longer clamp and limit the annular sleeve, the annular sleeve can automatically disengage from the annular groove at this time, facilitating the disassembly and repair of the annular sleeve.

[0009] Preferably, several spherical balls are respectively rotatably connected to the middle parts of the end faces of the rotating ring and the annular sleeve close to each other. When the rotating ring and the annular sleeve move in the corresponding annular grooves, the balls can be driven to roll on the end face of the annular groove, reducing the frictional resistance between the rotating ring, the annular sleeve and the annular groove, so that the movement of the rotating ring and the annular sleeve can be carried out more easily and stably.

[0010] Preferably, an annular guide cavity is provided at the top of the annular groove on the top surface of the test bench. The opening of the guide cavity gradually increases from inside to outside. Several groups of oil leakage grooves that communicate with the ends of the two annular grooves and are symmetrically distributed are opened inside the test bench. The side walls of the oil leakage grooves are flush with the side walls of the annular groove. By pre-injecting lubricating oil into the guide cavity, when the rotating ring and the annular groove move relative to each other, the lubricating oil gradually seeps into the bottom end of the top annular groove from the gap between the two, and flows into the top of the bottom annular groove through the oil leakage grooves, so as to lubricate the side walls of the rotating ring, the annular sleeve and the annular groove, reducing the frictional resistance when the rotating ring and the annular sleeve move relative to the annular groove.

[0011] Preferably, an annular collecting sleeve is connected to the top surface of the side wall of the annular sleeve close to the test bench. A recovery groove is provided on the side wall of the annular sleeve corresponding to the bottom end of the collecting sleeve. When the annular sleeve rotates repeatedly, the lubricating oil that slowly seeps downward along the annular groove at this time can flow to the collecting sleeve and flow back into the annular sleeve through the recovery groove, so as to collect the lubricating oil, reduce the pollution of the lubricating oil to the ground, and also enable the lubricating oil to be reused.

[0012] Preferably, a rotating plate is rotatably connected to the inner side wall of the annular sleeve through a torsion spring. The semi-annular plate and the bottom end of the rotating plate are respectively made of magnetic materials, and when the semi-annular plate approaches the bottom end of the rotating plate, it can repel the bottom end of the rotating plate. The top end of the rotating plate extends into the vibration hole on the experimental table and is fixedly connected with a sliding sleeve. One end of the sliding sleeve close to the vibration rod is slidably connected with a slider. An elastic member is connected between the slider and the end of the sliding sleeve, and an extrusion block is arranged in the chamber between the slider and the end of the sliding sleeve. The extrusion block is connected to the bottom end of the annular sleeve through a conveying strip. The extrusion block and the conveying strip are respectively made of water-absorbing materials. A collecting groove communicating with the inside of the sliding sleeve is opened on the side wall of the vibration hole corresponding to one side of the sliding sleeve. A diversion groove communicating the collecting groove with the guiding cavity is opened inside the experimental table; the conveying strip can convey the lubricating oil collected inside the annular sleeve to the extrusion block. When the annular sleeve needs to work and the semi-annular plate clamps it, at this time, the approaching semi-annular plate can repel the bottom end of the rotating plate, so that the top end of the rotating plate drives the sliding sleeve and the slider to move synchronously. At the same time, the slider can squeeze the extrusion block under the action of inertia, so that the lubricating oil inside it is extruded and flows into the guiding cavity through the diversion groove at the collecting groove, so that the lubricating oil collected in the collecting sleeve can be automatically transferred to the diversion cavity for reuse. And when the semi-annular plate moves away from the annular sleeve, at this time, when the rotating plate resets, it can squeeze the lubricating oil in the extrusion block through the slider again, further improving the reuse effect of the lubricating oil.

[0013] Preferably, the top end of the conveying strip is arranged on one side of the bottom surface of the sliding sleeve close to the slider, and the top end of the conveying strip is flush with the inner wall of the bottom surface of the sliding sleeve; when the slider squeezes the extrusion block under the action of its own inertia, the slider first slides over the top end of the conveying strip and blocks its top end, so that the conveying strip is no longer connected to the extrusion block inside the sliding sleeve, thereby reducing the situation that the lubricating oil flows back from the conveying strip when the subsequent extrusion block is squeezed, so that the lubricating oil in the extrusion block can be more fully utilized.

[0014] Preferably, conveying blocks are respectively arranged in the guiding cavities on both sides of the top end of the rotating ring. A connecting strip connecting the two conveying blocks is arranged inside the rotating ring. The conveying blocks and the connecting strip are respectively made of water-absorbing materials, and pressing blocks are annularly and evenly arranged on the side wall of the guiding cavity far from the sliding sleeve; when the lubricating oil in the extrusion block flows into the guiding cavity close to the sliding sleeve from the diversion groove, at this time, the conveying block at this place can convey the lubricating oil to the conveying block in the guiding cavity far from the sliding sleeve through the connecting strip. When the subsequent rotating ring rotates, the pressing block can intermittently squeeze the conveying block far from the sliding sleeve, so that the lubricating oil inside it can be extruded to one side of the guiding cavity far from the sliding sleeve, so that the inner and outer side walls of the annular groove at the rotating ring are filled with lubricating oil, improving the uniformity of lubrication between the subsequent rotating ring and the side wall of the annular sleeve.

[0015] Preferably, the elastic member is in the shape of an arc-shaped sheet, and the middle part of the elastic member bulges upward. The extrusion block is located in the sliding sleeve chamber at the top end of the elastic member, and a plurality of diversion holes are formed on the surface of the elastic member. When the slider squeezes the extrusion block under the action of inertia, at this time, the middle part of the elastic member arches upward under the extrusion of the slider. At the same time, the lubricating oil in the extrusion block can flow from the diversion holes to the bottom of the elastic member. At this time, the elastic member can isolate the extruded lubricating oil from the extrusion block, facilitating the outflow of the lubricating oil.

[0016] Preferably, the opening of the diversion hole gradually increases from the end close to the extrusion block to the end far from the extrusion block. An elastic plug ball is connected in the diversion hole through a pull rope, and there is a gap between the plug ball and the diversion hole. When the lubricating oil is extruded to the bottom of the elastic member and the slider is in the process of resetting, at this time, the elastic member elongates under the drive of the slider and drives the plug ball to fit and squeeze with the bottom surface of the sliding sleeve, so that the plug ball can be pressed into the interior of the diversion hole and the diversion hole can be blocked, reducing the situation that the lubricating oil extruded from the bottom of the elastic member contacts the extrusion block through the diversion hole and is re-absorbed by the extrusion block. At the same time, when the closed elastic member elongates, it will also extrude the lubricating oil at its bottom into the collection tank, thereby further promoting the outflow of the lubricating oil in the extrusion block.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. By providing a rotating ring on the top surface of the experimental table to drive the movement of the annular sleeve, the working angle of the vibration generating device inside the annular sleeve can be adjusted conveniently and quickly, improving the working efficiency of the experimental device. At the same time, it is no longer necessary to set a vertical limiting mechanism when the annular sleeve is working, thus simplifying the internal structure and installation process of the annular sleeve.

[0019] 2. When it is necessary to disassemble the annular sleeve from the annular groove, at this time, only need to rotate the rotating ring so that the magnetic plate on the rotating ring and the magnetic plate on the annular sleeve are misaligned and no longer adsorbed. After that, when the semi-circular plate no longer clamps and limits the annular sleeve, at this time, the annular sleeve can automatically disengage from the annular groove, thus facilitating the disassembly and maintenance of the annular sleeve. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 is a schematic structural diagram of the present invention;

[0023] Figure 3 is Figure 2 an enlarged view of part A in

[0024] Figure 4 is Figure 3 an enlarged view of part B in

[0025] Figure 5 is a schematic structural diagram of the rotating ring in the present invention;

[0026] Figure 6 is a schematic structural diagram of the sliding sleeve in the second embodiment;

[0027] In the figure: experimental bench 1, vibration model 2, vibration holes 3, annular groove 4, rotating ring 5, annular sleeve 6, magnetic plate 7, linear motor 8, vibration rod 9, test model 10, electric push rod 11, semi-annular plate 12, ball 13, guiding cavity 14, oil leakage groove 15, collecting sleeve 16, recovery groove 17, rotating plate 18, sliding sleeve 19, slider 20, elastic member 21, extrusion strip 22, conveying strip 23, collecting groove 24, diversion groove 25, conveying block 26, connecting strip 27, pressing block 28, diversion hole 29, plugging ball 30. Specific embodiments

[0028] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1:

[0030] Please refer to Figure 1 - Figure 2As shown in the figure, an experimental device for the interference effect of a building structure according to an embodiment of the present invention includes an experimental table 1 located in a wind field; a vibration model 2 is provided in the middle of the top surface of the experimental table 1. A vibration hole 3 is respectively opened in the middle of the bottom surface of the vibration model 2 and the corresponding experimental table 1, and annular grooves 4 are respectively opened on the top and bottom surfaces of the experimental table 1 where the vibration model 2 is located. A rotating ring 5 and an annular sleeve 6 are respectively rotatably connected in the annular grooves 4 on the top and bottom surfaces of the experimental table 1. Magnetic plates 7 are respectively inlaid and installed at the bottom end of the rotating ring 5 and the top end of the annular sleeve 6, and the poles of the ends of the two magnetic plates 7 close to each other are opposite. A linear motor 8 is provided inside the annular sleeve 6, and a vibration rod 9 passing through the vibration hole 3 is connected to the end of the linear motor 8. A test model 10 is provided on the experimental table 1 on one side of the vibration model 2. Vibration sensors and wind pressure sensors are arranged on both the vibration model 2 and the test model 10; when the working angle of the vibration generating device in the prior art is adjusted to improve the analysis accuracy of the wind-induced interference effect of the building group, since the annular plate is arranged at the bottom of the experimental table 1, it is difficult for the staff to rotate the annular plate conveniently and quickly, which affects the convenience of the experimental device during operation; while when the experimental device in the present invention is used, due to the mutual attraction of the magnetic plates 7 on the rotating ring 5 and the annular sleeve 6, the rotating ring 5 and the annular sleeve 6 can be stably fixed in the two annular grooves 4. When the linear motor 8 works, it can drive the vibration rod 9 to reciprocally impact the side wall of the vibration hole 3 at the vibration model 2, thereby forcing the vibration model 2 to vibrate. At this time, the test model 10 is also affected and vibrates. Then, the vibration sensors and the wind pressure sensors are used to detect the vibration model 2 and the test model 10, so as to collect the wind pressure intensity and vibration intensity on the surfaces of the vibration model 2 and the test model 10 under the vibration condition, and further simulate and analyze the wind-induced interference effect between the building groups under the vibration condition. When it is necessary to adjust the position of the linear motor 8, at this time, only the rotating ring 5 on the top surface of the experimental table 1 needs to be rotated, so that when the rotating ring 5 rotates, it can drive the annular sleeve 6 to rotate in the corresponding annular groove 4 through the mutually attracting magnetic plates 7, thereby conveniently and quickly adjusting the working angle of the vibration generating device inside the annular sleeve 6, improving the working efficiency of the experimental device. At the same time, the attraction of the two magnetic plates 7 can overcome the gravity of the annular sleeve 6 itself, so that a vertical limiting mechanism does not need to be provided for the annular sleeve 6 during operation, thereby simplifying the internal structure and installation process of the annular sleeve 6.

[0031] As Figure 2 with Figure 5As shown, electric push rods 11 are symmetrically installed on the bottom surface of the test bench 1 corresponding to both sides of the annular sleeve 6. The end parts of the electric push rods 11 are respectively connected with semi-circular plates 12 that match the outer wall shape of the annular sleeve 6. The magnetic plates 7 on the rotating ring 5 and the annular sleeve 6 are arranged in a circular and evenly distributed manner. When the working angle of the annular sleeve 6 is adjusted, the electric push rods 11 can drive the semi-circular plates 12 to approach each other and clamp the annular sleeve 6, improving the stability of the annular sleeve 6 during operation. At the same time, when it is necessary to disassemble the annular sleeve 6 from the annular groove 4, only the rotating ring 5 needs to be rotated at this time, so that the magnetic plates 7 on the rotating ring 5 and the magnetic plates 7 on the annular sleeve 6 are misaligned and no longer adsorbed. Then, when the semi-circular plates 12 no longer clamp and limit the annular sleeve 6, the annular sleeve 6 can automatically disengage from the annular groove 4, thus facilitating the disassembly and repair of the annular sleeve 6.

[0032] As Figure 2 - Figure 4 shown, a number of spherical balls 13 are respectively rotatably connected to the middle parts of the end faces of the rotating ring 5 and the annular sleeve 6 close to each other. When the rotating ring 5 and the annular sleeve 6 move in the corresponding annular groove 4, the balls 13 can be driven to roll on the end face of the annular groove 4, reducing the frictional resistance between the rotating ring 5, the annular sleeve 6 and the annular groove 4, so that the movement of the rotating ring 5 and the annular sleeve 6 can be carried out more easily and stably.

[0033] An annular guide cavity 14 is provided at the top of the annular groove 4 on the top surface of the test bench 1. The opening of the guide cavity 14 gradually increases from the inside to the outside. A number of groups of oil leakage grooves 15 that communicate with the ends of the two annular grooves 4 and are symmetrically distributed are opened inside the test bench 1. The side walls of the oil leakage grooves 15 are flush with the side walls of the annular groove 4. By pre-injecting lubricating oil into the guide cavity 14, when the rotating ring 5 and the annular groove 4 move relative to each other, the lubricating oil gradually seeps into the bottom end of the top annular groove 4 from the gap between the two, and flows into the top of the bottom annular groove 4 through the oil leakage grooves 15, so as to lubricate the side walls of the rotating ring 5, the annular sleeve 6 and the annular groove 4, reducing the frictional resistance when the rotating ring 5 and the annular sleeve 6 move relative to the annular groove 4.

[0034] An annular collecting sleeve 16 is connected to the top surface of the side wall of the annular sleeve 6 close to the test bench 1. A recovery groove 17 is opened on the side wall of the annular sleeve 6 corresponding to the bottom end of the collecting sleeve 16. When the annular sleeve 6 rotates repeatedly, the lubricating oil that slowly seeps downward along the annular groove 4 at this time can flow to the collecting sleeve 16 and flow back into the annular sleeve 6 through the recovery groove 17, so as to collect the lubricating oil, reduce the pollution of the lubricating oil to the ground, and also enable the lubricating oil to be reused reciprocally.

[0035] A rotating plate 18 is rotatably connected to the inner side wall of the annular sleeve 6 through a torsion spring. The semi-circular plate 12 and the bottom end of the rotating plate 18 are respectively made of magnetic materials, and when the semi-circular plate 12 approaches the bottom end of the rotating plate 18, it can repel the bottom end of the rotating plate 18. The top end of the rotating plate 18 extends into the vibration hole 3 on the experimental table 1 and is fixedly connected with a sliding sleeve 19. A slider 20 is slidably connected to one end of the sliding sleeve 19 close to the vibration rod 9. An elastic member 21 is connected between the slider 20 and the end of the sliding sleeve 19, and an extrusion strip 22 is arranged in the chamber between the slider 20 and the end of the sliding sleeve 19. The extrusion strip 22 is connected to the bottom end of the annular sleeve 6 through a conveying strip 23. The extrusion strip 22 and the conveying strip 23 are respectively made of water-absorbing materials. A collecting groove 24 communicating with the inside of the sliding sleeve 19 is formed in the side wall of the vibration hole 3 corresponding to one side of the sliding sleeve 19. A diversion groove 25 communicating the collecting groove 24 with the guiding cavity 14 is formed inside the experimental table 1. The conveying strip 23 can convey the lubricating oil collected inside the annular sleeve 6 to the extrusion strip 22. When the annular sleeve 6 needs to work and the semi-circular plate 12 clamps it, the approaching semi-circular plate 12 can repel the bottom end of the rotating plate 18, so that the top end of the rotating plate 18 drives the sliding sleeve 19 and the slider 20 to move synchronously. At the same time, under the action of inertia, the slider 20 can extrude the extrusion strip 22, so that the lubricating oil inside it is extruded and flows into the guiding cavity 14 through the diversion groove 25 at the collecting groove 24, so that the lubricating oil collected in the collecting sleeve 16 can be automatically transferred to the diversion cavity for reuse. And when the semi-circular plate 12 moves away from the annular sleeve 6, at this time, when the rotating plate 18 resets, it can extrude the lubricating oil in the extrusion strip 22 through the slider 20 again, further improving the reuse effect of the lubricating oil.

[0036] The top end of the conveying strip 23 is arranged on one side of the bottom surface of the sliding sleeve 19 close to the slider 20, and the top end of the conveying strip 23 is flush with the inner wall of the bottom surface of the sliding sleeve 19. When the slider 20 extrudes the extrusion strip 22 under the action of its own inertia, the slider 20 first slides over the top end of the conveying strip 23 and blocks its top end, so that the conveying strip 23 is no longer communicated with the extrusion strip 22 inside the sliding sleeve 19, thereby reducing the situation that the lubricating oil flows back from the conveying strip 23 when the subsequent extrusion strip 22 is extruded, so that the lubricating oil in the extrusion strip 22 can be utilized more fully.

[0037] Conveying blocks 26 are respectively arranged in the guiding cavities 14 on both sides of the top end of the swivel ring 5. A connecting bar 27 connecting the two conveying blocks 26 is arranged inside the swivel ring 5. The conveying blocks 26 and the connecting bar 27 are respectively made of water-absorbing materials, and pressing blocks 28 evenly distributed in a ring are arranged on the side wall of the guiding cavity 14 far from the sliding sleeve 19. When the lubricating oil in the extrusion bar 22 flows into the side of the guiding cavity 14 close to the sliding sleeve 19 from the diversion groove 25, at this time, the conveying block 26 at this place can convey the lubricating oil to the conveying block 26 in the guiding cavity 14 far from the sliding sleeve 19 through the connecting bar 27. When the subsequent swivel ring 5 rotates, the pressing block 28 can intermittently extrude the conveying block 26 far from the sliding sleeve 19, so as to extrude the lubricating oil inside it to one side of the guiding cavity 14 far from the sliding sleeve 19, so that both the inner and outer side walls of the annular groove 4 at the swivel ring 5 are filled with lubricating oil, improving the uniformity of lubrication between the subsequent swivel ring 5 and the side wall of the annular sleeve 6.

[0038] Embodiment 2:

[0039] As Figure 6 shown, compared with Embodiment 1, another implementation manner of the present invention is: the elastic member 21 is in the shape of an arc-shaped sheet, and the middle part of the elastic member 21 bulges upward. The extrusion bar 22 is located in the cavity of the sliding sleeve 19 at the top end of the elastic member 21. A plurality of diversion holes 29 are formed on the surface of the elastic member 21. When the slider 20 extrudes the extrusion bar 22 under the action of inertia, at this time, the middle part of the elastic member 21 arches upward under the extrusion of the slider 20, and at the same time, the lubricating oil in the extrusion bar 22 can flow from the diversion holes 29 to the bottom of the elastic member 21. At this time, the elastic member 21 can isolate the extruded lubricating oil from the extrusion bar 22, facilitating the outflow of the lubricating oil.

[0040] The opening of the diversion hole 29 gradually increases from the end close to the extrusion bar 22 to the end far from the extrusion bar 22. An elastic plug ball 30 is connected in the diversion hole 29 through a pull rope, and there is a gap between the plug ball 30 and the diversion hole 29. When the lubricating oil is extruded to the bottom of the elastic member 21 and the slider 20 is in the reset process, at this time, the elastic member 21 elongates under the drive of the slider 20 and drives the plug ball 30 to fit and press against the bottom surface of the sliding sleeve 19, so as to press the plug ball 30 into the inside of the diversion hole 29 and block the diversion hole 29, reducing the situation that the lubricating oil extruded from the bottom of the elastic member 21 contacts the extrusion bar 22 through the diversion hole 29 and is reabsorbed by the extrusion bar 22. At the same time, the closed elastic member 21 will also extrude the lubricating oil at its bottom to the collection groove 24 when elongating, further promoting the outflow of the lubricating oil in the extrusion bar 22.

[0041] Working principle: Since the rotating ring 5 and the magnetic plates 7 on the annular sleeve 6 attract each other, the rotating ring 5 and the annular sleeve 6 can be stably fixed in the two annular grooves 4. When the linear motor 8 works, it can drive the vibrating rod 9 to reciprocally impact the side wall of the vibration hole 3 at the vibration model 2, thereby forcing the vibration model 2 to vibrate. At this time, the test model 10 is also affected and vibrates. Then, vibration sensors and wind pressure sensors are used to detect the vibration model 2 and the test model 10, so as to collect the wind pressure intensity and vibration intensity on the surfaces of the vibration model 2 and the test model 10 under the vibration condition, and then the wind-induced interference effect between building groups under the vibration condition can be simulated and analyzed. When it is necessary to adjust the position of the linear motor 8, at this time, only need to rotate the rotating ring 5 on the top surface of the experimental bench 1, so that when the rotating ring 5 rotates, it can drive the annular sleeve 6 to rotate in the corresponding annular groove 4 through the mutually attracting magnetic plates 7, thereby enabling the working angle of the vibration generating device inside the annular sleeve 6 to be adjusted conveniently and quickly, improving the working efficiency of the experimental device. At the same time, the attraction force of the two magnetic plates 7 can overcome the self-gravity of the annular sleeve 6, so that the annular sleeve 6 does not need to be provided with a vertical limiting mechanism during operation, thus simplifying the internal structure and installation process of the annular sleeve 6; when the working angle of the annular sleeve 6 is adjusted, at this time, the electric push rod 11 can drive the semi-circular plates 12 to approach each other and clamp the annular sleeve 6, improving the stability of the annular sleeve 6 during operation. At the same time, when it is necessary to disassemble the annular sleeve 6 from the annular groove 4, at this time, only need to rotate the rotating ring 5 so that the magnetic plate 7 on the rotating ring 5 and the magnetic plate 7 on the annular sleeve 6 are misaligned and no longer adsorbed. Then, when the semi-circular plates 12 no longer clamp and limit the annular sleeve 6, at this time, the annular sleeve 6 can automatically disengage from the annular groove 4, thus facilitating the disassembly and maintenance of the annular sleeve 6; when the rotating ring 5 and the annular sleeve 6 move in the corresponding annular grooves 4, they can drive the balls 13 to roll on the end surface of the annular groove 4, reducing the frictional resistance between the rotating ring 5 and the annular sleeve 6 and the annular groove 4, so that the movement of the rotating ring 5 and the annular sleeve 6 can be carried out more easily and stably; by pre-injecting lubricating oil into the guiding cavity 14, when the rotating ring 5 and the annular groove 4 move relative to each other, the lubricating oil gradually seeps from the gap between the two to the bottom end of the top annular groove 4 and flows into the top of the bottom annular groove 4 through the oil leakage groove 15, thereby being able to lubricate the side walls of the rotating ring 5, the annular sleeve 6 and the annular groove 4, reducing the frictional resistance when the rotating ring 5 and the annular sleeve 6 move relative to the annular groove 4; when the annular sleeve 6 rotates repeatedly, at this time, the lubricating oil slowly seeping downward along the annular groove 4 can flow to the collecting sleeve 16 and flow back into the interior of the annular sleeve 6 through the recovery groove 17, thereby being able to collect the lubricating oil, reducing the pollution of the lubricating oil to the ground and also enabling the lubricating oil to be recycled;The conveying strip 23 can convey the lubricating oil collected inside the annular sleeve 6 to the extrusion strip 22. When the annular sleeve 6 needs to work and is clamped by the semi-circular plate 12, the approaching semi-circular plate 12 can repel the bottom end of the rotating plate 18 at this time, so that the top end of the rotating plate 18 drives the sliding sleeve 19 and the slider 20 to move synchronously. At the same time, under the action of inertia, the slider 20 can extrude the extrusion strip 22, and the lubricating oil inside it is extruded and flows into the guiding cavity 14 through the diversion groove 25 at the collecting groove 24, so that the lubricating oil collected in the collecting sleeve 16 can be automatically transferred to the diversion cavity for reuse. And when the semi-circular plate 12 moves away from the annular sleeve 6, at this time, when the rotating plate 18 resets, it can again extrude the lubricating oil in the extrusion strip 22 through the slider 20, further improving the reuse effect of the lubricating oil; when the slider 20 extrudes the extrusion strip 22 under the action of its own inertia, the slider 20 first slides over the top end of the conveying strip 23 and blocks its top end, so that the conveying strip 23 is no longer connected to the extrusion strip 22 inside the sliding sleeve 19, thus reducing the situation that when the subsequent extrusion strip 22 is extruded, the lubricating oil flows back from the conveying strip 23, so that the lubricating oil in the extrusion strip 22 can be more fully utilized; when the lubricating oil in the extrusion strip 22 flows into the side of the guiding cavity 14 close to the sliding sleeve 19 from the diversion groove 25, the conveying block 26 at this place can convey the lubricating oil to the conveying block 26 of the guiding cavity 14 far from the sliding sleeve 19 through the connecting strip 27. When the subsequent rotating ring 5 rotates, the pressing block 28 can intermittently extrude the conveying block 26 far from the sliding sleeve 19, so that the lubricating oil inside it can be extruded to the side of the guiding cavity 14 far from the sliding sleeve 19, so that the inner and outer side walls of the annular groove 4 of the rotating ring 5 are filled with lubricating oil, improving the uniformity of lubrication between the subsequent rotating ring 5 and the side wall of the annular sleeve 6; when the slider 20 extrudes the extrusion strip 22 under the action of inertia, the middle part of the elastic member 21 arches upward under the extrusion of the slider 20 at this time, and at the same time, the lubricating oil in the extrusion strip 22 can flow from the diversion hole 29 to the bottom of the elastic member 21. At this time, the elastic member 21 can isolate the extruded lubricating oil from the extrusion strip 22, facilitating the outflow of the lubricating oil; when the lubricating oil is extruded to the bottom of the elastic member 21 and the slider 20 is in the process of resetting, at this time, the elastic member 21 elongates under the drive of the slider 20 and drives the plugging ball 30 to fit and squeeze against the bottom surface of the sliding sleeve 19, so that the plugging ball 30 can be pressed into the diversion hole 29 and block the diversion hole 29, reducing the situation that the lubricating oil extruded from the bottom of the elastic member 21 contacts the extrusion strip 22 through the diversion hole 29 and is reabsorbed by the extrusion strip 22. At the same time, the closed elastic member 21 will also extrude the lubricating oil at its bottom into the collecting groove 24 when it elongates, thus further promoting the outflow of the lubricating oil in the extrusion strip 22.;

[0042] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An experimental device for the interference effect of building structures, comprising an experimental bench (1) located in a wind field; characterized in that: In the middle of the top surface of the test bench (1), there is a vibration model (2). In the middle of the bottom surface of the vibration model (2) and the corresponding test bench (1), vibration holes (3) that communicate with each other are respectively provided. On the top and bottom surfaces of the test bench (1) at the vibration model (2), annular grooves (4) are respectively provided. Inside the annular grooves (4) on the top and bottom surfaces of the test bench (1), a rotating ring (5) and an annular sleeve (6) are respectively rotatably connected. At the bottom end of the rotating ring (5) and the top end of the annular sleeve (6), magnetic plates (7) are respectively inlaid and installed. And the poles of the ends of the two groups of magnetic plates (7) close to each other are opposite. Inside the annular sleeve (6), there is a linear motor (8). The end of the linear motor (8) is connected to a vibration rod (9) passing through the vibration hole (3). On the test bench (1) on one side of the vibration model (2), there is a test model (10). Vibration sensors and wind pressure sensors are arranged on both the vibration model (2) and the test model (10). On the bottom surface of the test bench (1) corresponding to both sides of the annular sleeve (6), electric push rods (11) are symmetrically installed. The ends of the electric push rods (11) are respectively connected to semi-annular plates (12) whose outer shapes match the outer wall of the annular sleeve (6). The magnetic plates (7) on the rotating ring (5) and the annular sleeve (6) are respectively arranged in a ring shape and evenly distributed.

2. The experimental device for the interference effect of a building structure according to claim 1, wherein: In the middle of the end faces of the rotating ring (5) and the annular sleeve (6) close to each other, a number of spherical balls (13) are respectively rotatably connected.

3. An experimental device for the interference effect of a building structure according to claim 1, characterized in that: On the top of the annular groove (4) on the top surface of the test bench (1), an annular guiding cavity (14) is provided. The opening of the guiding cavity (14) gradually increases from the inside to the outside. Inside the test bench (1), a number of groups of oil leakage grooves (15) that communicate with the ends of the two annular grooves (4) and are symmetrically distributed are provided. The side walls of the oil leakage grooves (15) are flush with the side walls of the annular grooves (4).

4. An experimental device for the interference effect of a building structure according to claim 3, characterized in that: On the top surface of the side wall of the annular sleeve (6) close to the test bench (1), an annular collecting sleeve (16) is connected. On the side wall of the annular sleeve (6) corresponding to the bottom end of the collecting sleeve (16), a recovery groove (17) is provided.

5. An experimental device for the interference effect of a building structure according to claim 4, characterized in that: On the inner side wall of the annular sleeve (6), a rotating plate (18) is rotatably connected through a torsion spring. The semi-circular plate (12) and the bottom end of the rotating plate (18) are respectively made of magnetic materials, and when the semi-circular plate (12) approaches the bottom end of the rotating plate (18), it can repel the bottom end of the rotating plate (18). The top end of the rotating plate (18) extends into the vibration hole (3) on the experimental table (1) and is fixedly connected with a sliding sleeve (19). One end of the sliding sleeve (19) close to the vibration rod (9) is slidably connected with a slider (20). An elastic member (21) is connected between the slider (20) and the end of the sliding sleeve (19). And in the chamber between the slider (20) and the end of the sliding sleeve (19), an extrusion strip (22) is provided. The extrusion strip (22) is connected with the bottom end of the annular sleeve (6) through a conveying strip (23). The extrusion strip (22) and the conveying strip (23) are respectively made of water-absorbing materials. On the side wall of the vibration hole (3) corresponding to one side of the sliding sleeve (19), a collecting groove (24) communicating with the inside of the sliding sleeve (19) is opened. A diversion groove (25) communicating the collecting groove (24) with the guiding cavity (14) is opened inside the experimental table (1).

6. The experimental device for the interference effect of a building structure according to claim 5, characterized in that: The top end of the conveying strip (23) is arranged on one side of the bottom surface of the sliding sleeve (19) close to the slider (20), and the top end of the conveying strip (23) is flush with the inner wall of the bottom surface of the sliding sleeve (19).

7. An experimental device for the interference effect of a building structure according to claim 5, characterized in that: In the guiding cavities (14) on both sides of the top end of the rotating ring (5), conveying blocks (26) are respectively provided. Inside the rotating ring (5), a connecting strip (27) connecting the two conveying blocks (26) is provided. The conveying blocks (26) and the connecting strip (27) are respectively made of water-absorbing materials. And on the side wall of the guiding cavity (14) far from the sliding sleeve (19), annularly and uniformly distributed pressing blocks (28) are provided.

8. The experimental device for the interference effect of a building structure according to claim 5, characterized in that: The elastic member (21) is in the shape of an arc-shaped sheet, and the middle part of the elastic member (21) bulges upward. The extrusion strip (22) is located in the chamber of the sliding sleeve (19) at the top end of the elastic member (21). A plurality of diversion holes (29) are opened on the surface of the elastic member (21).

9. The experimental device for the interference effect of a building structure according to claim 8, characterized in that: The opening of the diversion hole (29) gradually increases from the end close to the extrusion strip (22) to the end far from the extrusion strip (22). An elastic plug ball (30) is connected in the diversion hole (29) through a pull rope, and there is a gap between the plug ball (30) and the diversion hole (29).

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