Building earthquake resistance testing device

Abstract

The utility model belongs to the technical field of building quality testing, and particularly relates to a building shock resistance testing device which comprises a balance weight plate, two guide frames are fixedly arranged above the front end of the balance weight plate in the horizontal direction, movable rods are arranged on the outer sides of the two guide frames in a sliding and sleeved mode, and lower trays are fixed to the upper ends of the movable rods. A groove is formed in the bottom of the rear end of the lower tray, sleeves are fixed to the four right-angle positions of the upper end of the lower tray, a bearing assembly is arranged above the sleeves, a building model is installed at the upper end of the bearing assembly, and a driving assembly is arranged above the rear portion of the balance weight plate. According to the utility model, the fixing plate can be pushed to drive the upper tray and the building model to slide left and right and perform high-frequency small-amplitude reciprocating lifting at the same time, so that multidirectional vibration of the building model can be realized conveniently, the simulated vibration sense is more real, and the reliability of measured data is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of building quality testing, and particularly relates to a building seismic resistance testing device. Background Art

[0002] Buildings are the general term for buildings and structures. With the development of building technology and the shortage of urban land resources, high-rise buildings have sprung up. Correspondingly, the safety of high-rise buildings has become the focus of concern for residents.

[0003] The quality of high-rise buildings is mainly divided by seismic grades. The higher the seismic grade that a building can resist, the higher and safer the building quality. Therefore, before building construction, it is necessary to build a building model according to the design in a reduced scale, and then use a building seismic resistance testing device to test the building model in order to obtain the seismic performance of the building.

[0004] However, through retrieval and research, it is found that the existing building seismic resistance testing devices on the market have a single vibration direction, and most of them only swing left and right at high frequencies, making it difficult to simulate a relatively real earthquake environment. Therefore, the measured seismic data is also prone to large errors. Therefore, it is urgent to improve the existing building seismic resistance testing devices and provide a building seismic resistance testing device that can simulate a more real situation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a building seismic resistance testing device with reasonable design, simple structure, multi-directional vibration function and more realistic simulation for solving the problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A building seismic resistance testing device includes a counterweight plate. Above the front end of the counterweight plate, two guiding frames are fixedly arranged horizontally. On the outer sides of the two guiding frames, movable rods are slidably sleeved. The upper ends of the movable rods are fixed with a lower tray. A groove is formed at the bottom of the rear end of the lower tray. At the four right-angle corners of the upper end of the lower tray, sleeves are fixedly arranged. Above the sleeves, a bearing assembly is provided. A building model is installed at the upper end of the bearing assembly. A driving assembly is arranged above the rear of the counterweight plate.

[0008] As a preferred embodiment, the two movable rods are symmetrically arranged front and back on the bottom end surface of the lower tray, and the lower tray and the bearing assembly are linked by the driving assembly.

[0009] As a preferred embodiment, the bearing assembly includes an upper tray, a limiting rod, a fixing plate and a through groove. The upper tray is located directly above the lower tray and they have the same size. Limiting rods are fixedly connected to the bottom ends of the four right angles of the upper tray. The outer wall of the middle part of the rear end of the upper tray is fixedly connected with a fixing plate, and a through groove is opened inside the bottom end of the fixing plate.

[0010] As a preferred embodiment, the multiple limiting rods and the multiple sleeves are arranged in one-to-one correspondence, and the corresponding sleeves and the limiting rods are slidably connected.

[0011] As a preferred embodiment, the building model is fixedly installed on the upper end surface of the upper tray by bolts.

[0012] As a preferred embodiment, the driving assembly includes a motor, a shaft rod, a first eccentric circle, a first bevel gear, a second bevel gear, a vertical shaft, a second eccentric circle and a bracket. The motor is fixedly installed above the rear of the counterweight plate. The output end of the motor is fixedly connected with a shaft rod. A first eccentric circle is fixedly sleeved on the outer side of the middle part of the shaft rod. A first bevel gear is fixedly connected to the end of the shaft rod away from the motor. A second bevel gear is meshed and connected in front of the first bevel gear. A vertical shaft is fixedly connected to the center of the upper end of the second bevel gear. A second eccentric circle is fixed at the top of the vertical shaft. A bracket is sleeved on the outer side of the middle part of the vertical shaft by a bearing, and the bottom end of the bracket is fixedly connected to the upper end surface of the counterweight plate.

[0013] As a preferred embodiment, the first eccentric circle rotates inside the through groove, and the second eccentric circle rotates inside the groove. The lower tray and the bearing assembly form a small reciprocating sliding structure to the left and right through the second eccentric circle, and the bearing assembly forms a small reciprocating lifting structure through the first eccentric circle.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the solution of the present utility model:

[0016] Start the motor to control the rotation of the shaft rod, and use the meshed first bevel gear and second bevel gear to rotate synchronously, then the vertical shaft and the second eccentric circle can be controlled to rotate rapidly. During this process, the rapidly rotating second eccentric circle can squeeze the lower tray provided with a groove, and push the lower tray to drive the bearing assembly and the building model to synchronously perform high-frequency small reciprocating sliding to the left and right along the guide frame. At the same time, the shaft rod can also drive the first eccentric circle to rotate rapidly. Similarly, the rapidly rotating first eccentric circle can squeeze the fixing plate provided with a through groove, and then push the fixing plate to drive the upper tray and the building model to perform high-frequency small reciprocating lifting while sliding to the left and right, which is convenient to realize multi-directional vibration of the building model, the simulated earthquake feeling is more real, and the measured data is more reliable;

[0017] The length of the through groove has sufficient margin to avoid affecting the small left - right sliding of the bearing component. Moreover, with the arrangement of the two guide frames, the stability of the left - right sliding of the lower tray and the bearing component can be improved. And through the sliding - connected sleeve and the limiting rod, the stability of the lifting of the bearing component can be improved, ensuring the stable operation test of the device. Brief Description of the Drawings

[0018] 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. The following is an explanation of the drawings:

[0019] Figure 1 It is a schematic front - view three - dimensional structure diagram of the present invention;

[0020] Figure 2 It is a schematic rear - view three - dimensional structure diagram of the present invention;

[0021] Figure 3 It is a schematic bottom - view overall structure diagram of the bearing component of the present invention;

[0022] Figure 4 It is a schematic left - view overall structure diagram of the driving component of the present invention;

[0023] Figure 5 It is a schematic left - view sectional structure diagram of the sleeve and the limiting rod of the present invention;

[0024] Figure 6 It is a schematic bottom - view structure diagram of the lower tray and the second eccentric circle of the present invention.

[0025] In the figure:

[0026] 1, counterweight plate; 2, guide frame; 3, movable rod; 4, lower tray; 5, groove; 6, sleeve; 7, bearing component; 71, upper tray; 72, limiting rod; 73, fixing plate; 74, through groove; 8, building model; 9, driving component; 91, motor; 92, shaft rod; 93, first eccentric circle; 94, first conical tooth; 95, second conical tooth; 96, vertical shaft; 97, second eccentric circle; 98, bracket. Detailed Embodiment

[0027] The following described embodiments are only a part of the embodiments of the present invention and do not represent all embodiments consistent with the present invention. Now, in combination with the drawings, the exemplary embodiments are described as follows:

[0028] As Figure 1-6As shown in the figure, the building seismicity testing device of the present utility model includes a counterweight plate 1. Above the front end of the counterweight plate 1, two guiding frames 2 are fixedly arranged horizontally. On the outer sides of the two guiding frames 2, movable rods 3 are slidably sleeved. At the upper end of the movable rod 3, a lower tray 4 is fixed. At the bottom of the rear end of the lower tray 4, a groove 5 is opened. At the four right-angle corners of the upper end of the lower tray 4, sleeves 6 are fixedly arranged. Above the sleeves 6, a bearing assembly 7 is provided. On the upper end of the bearing assembly 7, a building model 8 is installed. Above the rear of the counterweight plate 1, a driving assembly 9 is arranged.

[0029] On the basis of the above structure, the two movable rods 3 are symmetrically arranged front and back on the bottom end surface of the lower tray 4, and the lower tray 4 and the bearing assembly 7 are linked through the driving assembly 9.

[0030] In this embodiment, by arranging the guiding frames 2 and the movable rods 3, the stability of the lower tray 4 during the left-right sliding process can be improved.

[0031] On the basis of the above structure, the bearing assembly 7 includes an upper tray 71, a limiting rod 72, a fixing plate 73 and a through groove 74. The upper tray 71 is located directly above the lower tray 4 and has the same size as the lower tray 4. At the bottom ends of the four right-angle corners of the upper tray 71, limiting rods 72 are fixedly connected. On the outer wall of the middle part of the rear end of the upper tray 71, a fixing plate 73 is fixedly connected. Inside the bottom end of the fixing plate 73, a through groove 74 is opened.

[0032] On the basis of the above structure, multiple limiting rods 72 and multiple sleeves 6 are arranged in one-to-one correspondence, and the corresponding sleeves 6 and limiting rods 72 are slidably connected.

[0033] In this embodiment, by the slidably connected sleeves 6 and limiting rods 72, the stability of the upper tray 71 during the lifting adjustment process can be improved.

[0034] On the basis of the above structure, the building model 8 is fixedly installed on the upper end surface of the upper tray 71 through bolts.

[0035] In this embodiment, it is convenient to fixedly install the building model 8 above the upper tray 71, which is convenient for conducting building seismic performance tests.

[0036] On the basis of the above structure, the driving assembly 9 includes a motor 91, a shaft rod 92, a first eccentric circle 93, a first bevel gear 94, a second bevel gear 95, a vertical shaft 96, a second eccentric circle 97 and a bracket 98. The motor 91 is fixedly installed above the rear of the counterweight plate 1. The output end of the motor 91 is fixedly connected to the shaft rod 92. The middle outer side of the shaft rod 92 is fixedly sleeved with the first eccentric circle 93. One end of the shaft rod 92 away from the motor 91 is fixedly connected to the first bevel gear 94. The front of the first bevel gear 94 is meshed and connected with the second bevel gear 95. The upper center of the second bevel gear 95 is fixedly connected to the vertical shaft 96. The top of the vertical shaft 96 is fixed with the second eccentric circle 97. The middle outer side of the vertical shaft 96 is sleeved with a bearing of the bracket 98. The bottom end of the bracket 98 is fixedly connected to the upper end surface of the counterweight plate 1.

[0037] In this embodiment, by using the mutually meshed first bevel gear 94 and second bevel gear 95, it is convenient to control the synchronous rotation of the first eccentric circle 93 and the second eccentric circle 97.

[0038] On the basis of the above structure, the first eccentric circle 93 rotates inside the through groove 74, and the second eccentric circle 97 rotates inside the groove 5. The lower tray 4 and the bearing assembly 7 form a small reciprocating sliding structure left and right through the second eccentric circle 97, and the bearing assembly 7 forms a small reciprocating lifting structure through the first eccentric circle 93.

[0039] In this embodiment, the rotation of the first eccentric circle 93 can control the small reciprocating lifting of the bearing assembly 7, and the rotation of the second eccentric circle 97 can control the synchronous small reciprocating sliding left and right of the lower tray 4 and the bearing assembly 7, which is convenient to realize the multi-directional vibration of the building model 8, the simulated earthquake feeling is more real, and the measured data is more reliable.

[0040] The working principle of the present utility model is as follows:

[0041] When in use, first fixedly install the building model 8 to be tested above the upper tray 71 through bolts, and then start the motor 91 to control the shaft rod 92 to drive the first eccentric circle 93 and the first bevel gear 94 to rotate synchronously and rapidly. At this time, by using the second bevel gear 95 meshed with the first bevel gear 94, the vertical shaft 96 and the second eccentric circle 97 can be controlled to rotate rapidly. The rapidly rotating second eccentric circle 97 can squeeze the lower tray 4 provided with the groove 5, and push the lower tray 4 to drive the bearing assembly 7 and the building model 8 to synchronously perform high-frequency small reciprocating sliding left and right along the guide frame 2. At the same time, the rapidly rotating first eccentric circle 93 can squeeze the fixing plate 73 provided with the through groove 74, and then push the fixing plate 73 to drive the upper tray 71 and the building model 8 to perform high-frequency small reciprocating lifting while sliding left and right, so as to facilitate the realization of the simultaneous multi-directional vibration of the building model 8, the simulated earthquake feeling is more real, and the reliability of the measured building earthquake resistance data is higher;

[0042] Such asFigure 2 and Figure 3 As shown in Figure 3 , sufficient margin is left for the length of the through slot 74 to avoid affecting the small left - and - right sliding of the load - bearing component 7. Moreover, by means of the arrangement of the two guide frames 2, the stability of the left - and - right sliding of the lower tray 4 and the load - bearing component 7 can be improved. Also, through the sliding - connected sleeve 6 and the limit rod 72, the stability during the lifting process of the load - bearing component 7 can be enhanced, ensuring the stable operation test of the device.

[0043] The above are only the preferred specific embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art in this technical field based on the concept of the present utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A building seismic resistance testing device, comprising a counterweight plate (1), characterized in that: Two guide frames (2) are fixedly provided in the horizontal direction above the front end of the counterweight plate (1); movable rods (3) are slidably sleeved on the outer sides of the two guide frames (2); a lower tray (4) is fixed to the upper end of the movable rod (3); a groove (5) is provided at the bottom of the rear end of the lower tray (4); sleeves (6) are fixed at four right angles of the upper end of the lower tray (4); a bearing assembly (7) is provided above the sleeve (6); a building model (8) is installed at the upper end of the bearing assembly (7); and a driving assembly (9) is provided at the upper rear end of the counterweight plate (1).

2. A building seismic resistance testing device according to claim 1, characterized in that: The two movable rods (3) are symmetrically arranged front and back on the bottom end surface of the lower tray (4), and the lower tray (4) and the bearing assembly (7) are linked via a driving assembly (9).

3. A building seismic resistance testing device according to claim 1, characterized in that: The bearing assembly (7) comprises an upper tray (71), a limiting rod (72), a fixing plate (73) and a through slot (74); the upper tray (71) is located directly above the lower tray (4) and the two trays have the same size; the bottom ends of the four right angles of the upper tray (71) are fixedly connected to the limiting rod (72); the fixing plate (73) is fixedly connected to the outer wall of the middle part of the rear end of the upper tray (71); and a through slot (74) is provided inside the bottom end of the fixing plate (73).

4. A building seismic resistance testing device according to claim 3, characterized in that: The plurality of limiting rods (72) and the plurality of sleeves (6) are arranged in a one-to-one correspondence, and the corresponding sleeves (6) are slidably connected to the limiting rods (72).

5. A building seismic resistance testing device according to claim 4, characterized in that: The building model (8) is fixedly mounted on the upper end surface of the upper tray (71) by means of bolts.

6. A building seismic resistance testing device according to claim 5, characterized in that: The driving assembly (9) comprises a motor (91), a shaft (92), a first eccentric circle (93), a first conical tooth (94), a second conical tooth (95), a vertical shaft (96), a second eccentric circle (97) and a bracket (98); the motor (91) is fixedly mounted on the upper rear of the counterweight plate (1); the output end of the motor (91) is fixedly connected to the shaft (92); the first eccentric circle (93) is fixedly sleeved on the outer middle part of the shaft (92); The end of the gear wheel (92) away from the motor (91) is fixedly connected with a first conical tooth (94), the front of the first conical tooth (94) is meshed with a second conical tooth (95), the center of the upper end of the second conical tooth (95) is fixedly connected with a vertical shaft (96), the top of the vertical shaft (96) is fixed with a second eccentric circle (97), the middle outer bearing sleeve of the vertical shaft (96) is provided with a bracket (98), and the bottom end of the bracket (98) is fixedly connected to the upper end surface of the counterweight plate (1).

7. A building seismic resistance testing device according to claim 6, characterized in that: The first eccentric circle (93) is rotated to be located on the inner side of the through groove (74), and the second eccentric circle (97) is rotated to be located on the inner side of the groove (5). The lower tray (4) and the bearing assembly (7) form a left-right small reciprocating sliding structure through the second eccentric circle (97), and the bearing assembly (7) forms a small reciprocating lifting structure through the first eccentric circle (93).

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