Building component fire endurance test sample base

Abstract

The utility model discloses a sample base for a fire endurance test of a building component, and relates to the technical field of test equipment. The building component fire endurance test sample base comprises a sample base body, mounting grooves are formed in the sample base body, lifting mechanisms which synchronously operate are arranged in the multiple mounting grooves, a supporting table is arranged on the tops of the lifting mechanisms, and after the lifting mechanisms are lifted, the top end face of the supporting table is higher than the sample base body. After the lifting mechanism descends, the top end face of the supporting table is lower than the sample base body, the supporting table is provided with a transverse moving mechanism, and the transverse moving mechanism supports a building component. When the building component fire endurance test sample base moves, the building component is in an empty state and does not rub with the surface of the sample base body, so that the influence of abrasion is avoided, and the maintenance frequency is reduced. Therefore, the device has the advantages of being convenient to move, reducing abrasion and reducing maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a test specimen base for fire resistance limit testing of building components. Background Technology

[0002] The fire resistance limit testing device for horizontal building components is used to test the fire resistance limit, thermal insulation performance, and structural stability of horizontal building components (such as beams, slabs, and floor slabs) under standard fire conditions. This device integrates modern technology and safety standards, and is an indispensable testing tool for ensuring the safe design of buildings.

[0003] When placing building component specimens for testing, since the test substrate is an I-beam, it is necessary to ensure that the pressure plates of the multiple loading columns of the testing apparatus accurately press down on the axis of the upper surface of the I-beam. The I-beams of building components are quite heavy, so to accurately place the specimens in the designated position, workers typically use crowbars to move the building components little by little, or mechanical means are used to push them. During this movement, the bottom surface of the building component rubs against the specimen base, easily causing wear on the surface of the specimen base. This shortens the service life of the specimen base, requires more frequent maintenance, and increases maintenance costs.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the contact surface between the building component and the sample base is worn when the building component is moved. The purpose is to provide a sample base for fire resistance limit test of building components. By adopting the corresponding technical means, it has the beneficial effects of convenient movement, reduced wear and reduced maintenance costs.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model provides a test specimen base for fire resistance limit testing of building components, including a specimen base body. The specimen base body is provided with an installation groove. Multiple installation grooves are provided with synchronously operating lifting mechanisms. The top of the lifting mechanism is provided with a support platform. The support platform is provided with a transverse movement mechanism. The transverse movement mechanism supports the building component. After the lifting mechanism is raised, the top surface of the transverse movement mechanism is higher than the specimen base body. After the lifting mechanism is lowered, the top surface of the transverse movement mechanism is lower than the specimen base body.

[0008] Furthermore, in this utility model, the lifting mechanism described above includes a hydraulic cylinder, the top end of which is connected to the support platform.

[0009] Furthermore, in this utility model, the aforementioned plurality of hydraulic cylinders are connected to the same oil pump through multiple oil pipes of the same length, the oil pump is connected to the oil cylinders, and the oil pipes are equipped with electrically controlled valves.

[0010] Furthermore, in this utility model, the aforementioned transverse mechanism includes a transverse support plate slidably connected to the support platform, a lead screw threadedly connected to the transverse support plate, a motor driven by the lead screw, and the motor being disposed on the support platform.

[0011] Furthermore, in this utility model, the aforementioned support platform is provided with a slide rail, and the bottom of the transverse support plate is provided with a slider that slides along the slide rail.

[0012] Furthermore, in this invention, the surface of the slide rail is provided with a lubricating layer that contacts the slider, and the lubricating layer is configured as lubricating oil.

[0013] Furthermore, in this utility model, the aforementioned support platform is provided with a bearing seat, and the bearing seat is connected to both ends of the lead screw.

[0014] Furthermore, in this utility model, the aforementioned support platform is equipped with a speed reducer, the input end of which is connected to the motor, and the output end of which is connected to the lead screw.

[0015] Furthermore, in this invention, the sidewall of the mounting groove is in sliding contact with both ends of the support platform.

[0016] Furthermore, in this invention, the sidewall of the mounting groove is provided with lubricant.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] The fire resistance limit test specimen base for building components provided by this utility model relies on a lifting mechanism to raise and lower the building component, and a lateral movement mechanism to move the building component horizontally. In actual use, the lifting mechanism first raises the lateral movement mechanism so that the top surface of the lateral movement mechanism is higher than the top surface of the specimen base body. Then, a machine (such as a forklift or electric hoist) is used to place the building component on the lateral movement mechanism, at which point the bottom surface of the building component does not contact the specimen base body. Next, to align the building component with the loading column of the test device, the lateral movement mechanism is operated to move the building component horizontally. After alignment, the lifting mechanism lowers the lateral movement mechanism so that the top surface of the lateral movement mechanism is lower than the top surface of the specimen base body. At this point, the building component is completely supported by the specimen base body, without affecting the normal loading test. No manual movement of the building component is required, which has the advantage of reducing labor intensity. Furthermore, during movement, the building component is in a raised state, does not rub against the surface of the specimen base body, and will not cause wear, reducing maintenance frequency. Therefore, it has the beneficial effects of convenient relocation, reduced wear, and reduced maintenance costs. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the test specimen base for the fire resistance limit test of the building components of this utility model;

[0021] Figure 2 for Figure 1 An enlarged view of point A in the diagram;

[0022] Figure 3 This is a schematic diagram of the top surface of the test specimen base for the fire resistance limit test of the building components of this utility model;

[0023] Figure 4 This is a schematic diagram of the transverse sliding plate and lead screw of this utility model.

[0024] The markings and corresponding component names in the attached diagram are as follows: 1-Sample base body, 101-Mounting groove, 2-Lifting mechanism, 3-Support platform, 301-Slide rail, 4-Transverse movement mechanism, 401-Transverse movement support plate, 4011-Slider, 402-Lead screw, 403-Motor, 5-Building component, 6-Bearing seat, 7-Reducer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1

[0028] This embodiment 1 provides a test specimen base for fire resistance limit testing of building components, such as... Figures 1-4 As shown, the specific structure is described below.

[0029] The fire resistance limit test specimen base of the building component in this embodiment mainly includes five parts: specimen base body 1, lifting mechanism 2, support platform 3, lateral movement mechanism 4, and building component 5. The specimen base body 1 is used to support the building component 5 for loading test, the lifting mechanism 2 is used to drive the building component 5 to rise, the lateral movement mechanism 4 is used to drive the building component 5 to move horizontally, and the support platform 3 is used to support the lateral movement mechanism 4 and the building component 5.

[0030] Furthermore, the main body of the sample base 1 is made of metal, which has good pressure-bearing performance. Combined with... Figure 1 and Figure 3 As shown, two mounting grooves 101 are formed on the surface of the sample base body 1. The mounting grooves 101 are elongated and the lifting mechanism 2 is installed in the mounting grooves 101.

[0031] Combination Figure 1As shown, the lifting mechanism 2 uses hydraulic cylinders from the prior art. In this embodiment, four hydraulic cylinders are installed, with two hydraulic cylinders arranged in one mounting slot 101. The telescopic columns of the hydraulic cylinders face vertically upwards. The support platform 3 is also installed in the mounting slot 101, and the telescopic columns of the hydraulic cylinders are fixedly connected to the bottom of the support platform 3. The lifting mechanism 2 can drive the support platform 3 to rise and fall.

[0032] To ensure that the four hydraulic cylinders work synchronously and that the building component 5 is lifted and lowered smoothly as a whole, an oil pump is installed in this embodiment. The oil pump's inlet pipe is connected to the oil cylinder, and the oil pump is connected to four outlet pipes of the same length. Each of the four outlet pipes is connected to one of the four hydraulic cylinders to ensure that the oil inlet and outlet of the four hydraulic cylinders are kept as consistent as possible.

[0033] It should be noted that an electric control valve is installed on each of the four oil outlet pipes. The electric control valve controls the opening and closing of the oil outlet pipes, resulting in better performance.

[0034] In this embodiment, combined with Figure 1 and Figure 3 As shown, the upper and lower ends, as well as the left and right sides of the support platform 3, are in contact with the groove wall of the mounting groove 101, allowing the support platform 3 to rise and fall stably. The groove wall of the mounting groove 101 is coated with lubricant to reduce the friction of contact.

[0035] Furthermore, in combination Figure 1 , Figure 2 and Figure 4 As shown, the top of the support platform 3 is provided with a slide rail 301, and the transverse mechanism 4 includes a transverse support plate 401. The bottom of the transverse support plate 401 includes a slider 4011 that is inserted into the slide rail 301. The slider 4011 can slide along the slide rail 301.

[0036] It should be noted that the surface of the slide 301 is provided with a lubricating layer that contacts the slider 4011. The lubricating layer uses lubricating oil, which makes the slider 4011 and the transverse support plate 401 move more easily.

[0037] In this embodiment, combined with Figure 1 and Figure 2 As shown, the transverse mechanism 4 also includes a lead screw 402 and a motor 403. The lead screw 402 passes through the screw hole of the slider 4011 of the transverse support plate 401, realizing the threaded connection between the lead screw 402 and the transverse support plate 401. When the lead screw 402 rotates, the transverse support plate 401 can slide along the slide rail 301.

[0038] Furthermore, the motor 403 is mounted on top of the support platform 3, and a reducer 7 is also mounted on top of the support platform 3. The input end of the reducer 7 is fixedly connected to the main shaft of the motor 403 via a coupling, and the output end of the reducer 7 is fixedly connected to the lead screw 402 via a coupling. By adjusting the output torque of the reducer 7, the motor 403 can move the transverse support plate 401 more easily.

[0039] It should be noted that two bearing seats 6 are installed on the support platform 3. The bearing seats 6 are used to support the rotating lead screw 402.

[0040] The working principle of the test specimen base for fire resistance limit testing of building components of this utility model is as follows:

[0041] In practical use, the lifting mechanism 2 first raises the horizontal moving mechanism 4, making the top surface of the horizontal moving mechanism 4 higher than the top surface of the sample base body 1. Then, using machinery (such as a forklift or electric hoist), the building component 5 is placed on the horizontal moving mechanism 4, at which point the bottom surface of the building component 5 does not contact the sample base body 1. Next, to align the building component 5 with the loading column of the test device, the horizontal moving mechanism 4 is manipulated to move the building component 5 horizontally. After alignment, the lifting mechanism 2 lowers the horizontal moving mechanism 4, making the top surface of the horizontal moving mechanism 4 lower than the top surface of the sample base body 1. At this point, the building component 5 is completely supported by the sample base body 1, without affecting the normal loading test. There is no need for manual movement of the building component 5, which reduces labor intensity. Furthermore, during movement, the building component 5 is in a raised state, does not rub against the surface of the sample base body 1, and will not cause wear, reducing maintenance frequency.

[0042] In summary, this utility model provides a test specimen base for fire resistance limit testing of building components. It includes a specimen base body with mounting grooves. Multiple mounting grooves contain synchronously operating lifting mechanisms. A support platform is mounted on top of the lifting mechanisms, and a transverse movement mechanism is mounted on the support platform. The transverse movement mechanism supports the building component. When the lifting mechanism is raised, the top surface of the transverse movement mechanism is higher than the specimen base body; when the lifting mechanism is lowered, the top surface of the transverse movement mechanism is lower than the specimen base body. The lifting mechanism includes hydraulic cylinders, the top of which is connected to the support platform. Multiple hydraulic cylinders are connected to the same oil pump via multiple oil pipes of the same length. The oil pump is connected to the oil cylinders, and the oil pipes are equipped with electrically controlled valves. The transverse movement mechanism includes a transverse movement plate slidably connected to the support platform. A lead screw is threadedly connected to the transverse movement plate, and a motor is driven by the lead screw. The motor is mounted on the support platform. The support platform has a slide rail, and a slider that slides along the slide rail is mounted on the bottom of the transverse movement plate. The surface of the slide rail is provided with a lubricating layer that contacts the slider; the lubricating layer is composed of lubricating oil. The support platform is equipped with bearing seats, which are connected to both ends of the lead screw. The support platform also includes a reducer; the input end of the reducer is connected to the motor, and the output end is connected to the lead screw. The sidewalls of the mounting groove are in sliding contact with both ends of the support platform. Lubricating fluid is provided on the sidewalls of the mounting groove. Therefore, the fire resistance limit test specimen base for building components of this invention has the advantages of convenient relocation, reduced wear, and lower maintenance costs.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A building component fire endurance test specimen base, characterised in that, Including sample base body (1), the sample base body (1) is provided with installation groove (101), a plurality of installation groove (101) is provided with synchronous operation lifting mechanism (2), the top of lifting mechanism (2) is provided with support table (3), support table (3) is provided with horizontal movement mechanism (4), horizontal movement mechanism (4) holds up building component (5), the top end surface of horizontal movement mechanism (4) is higher than the sample base body (1) after lifting mechanism (2) rises, the top end surface of horizontal movement mechanism (4) is lower than the sample base body (1) after lifting mechanism (2) falls.

2. The fire endurance test specimen holder for building components according to claim 1, wherein, The lifting mechanism (2) comprises a hydraulic cylinder, and the top end of the hydraulic cylinder is connected with the support table (3).

3. A fire endurance test specimen base for building elements according to claim 2, characterised in that, A plurality of hydraulic cylinders are connected with the same length of oil pipe to the same oil pump, the oil pump is connected with an oil cylinder, and the oil pipe is provided with an electric control valve.

4. The fire endurance test specimen holder for building components according to claim 1, wherein, The horizontal movement mechanism (4) comprises a horizontal movement supporting plate (401) slidably connected with the support table (3), a screw rod (402) threadedly connected with the horizontal movement supporting plate (401), and a motor (403) drivingly connected with the screw rod (402).

5. A fire endurance test specimen base for building elements according to claim 4, characterised in that, The support table (3) is provided with a slide (301), and the bottom of the horizontal movement supporting plate (401) is provided with a sliding block (4011) sliding along the slide (301).

6. A fire endurance test specimen base for building elements according to claim 5, characterised in that, The surface of the slide (301) is provided with a lubricating layer in contact with the sliding block (4011), and the lubricating layer is configured as lubricating oil.

7. The fire endurance test specimen holder for building components according to claim 4, wherein, The support table (3) is provided with a bearing seat (6), and the bearing seat (6) is connected with both ends of the screw rod (402).

8. The fire endurance test specimen holder for building components according to claim 4, wherein, The support table (3) is provided with a speed reducer (7), and the input end of the speed reducer (7) is connected with the motor (403), and the output end of the speed reducer (7) is connected with the screw rod (402).

9. A fire endurance test specimen holder for building elements according to any one of claims 1 to 8, characterised in that, The side wall of the installation groove (101) is in sliding contact with both ends of the support table (3).

10. The fire endurance test specimen holder for building components according to claim 9, wherein, The side wall of the installation groove (101) is provided with lubricating liquid.

Images