Horizontal building component combustion test furnace

Abstract

The utility model relates to the technical field of fire resistance tests of building components, and discloses a horizontal building component combustion test furnace which comprises a furnace body, a feeding cover is movably installed on the side wall of the furnace body, an adjusting assembly is arranged at the top of the furnace body, and the feeding cover is movably installed on the side wall of the furnace body. The adjusting assembly comprises an adjusting frame, a servo motor, a transmission rod, a transverse frame, an adjusting block, a hydraulic rod, a tooth block, a fixing strip, a small air cylinder, a sliding plate, a T-shaped block, a spring and a rack. According to the combustion test furnace for the horizontal building component, the adjusting assembly is arranged and is matched with regulation and control of a servo motor and position change of an adjusting block in a sliding groove formed in a transverse frame, so that a hydraulic rod can be adjusted to any position in the furnace body; therefore, the load simulation device can meet the load simulation requirements of the horizontal building components with different sizes during the combustion test, the adaptability of the device to the horizontal building components with different sizes is ensured, and the use effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire resistance testing technology for building components, specifically a horizontal building component combustion test furnace. Background Technology

[0002] Fire resistance testing is a test method that simulates real fire to detect the fire resistance performance of building components. By conducting fire resistance limit tests, the fire resistance performance of the tested components can be accurately evaluated, thereby providing guiding data for building design and acceptance, and thus improving the fire safety of buildings.

[0003] According to the publicized method and device for loading fire resistance testing of horizontal building components (Announcement No.: CN106813936B), in the above application, the loading device consisting of a pressure pipe frame, a pressure-bearing crossbeam, multiple steel structural frames and multiple hydraulic cylinders is installed on the support structure. This separates the loading device from the test furnace and connects it to the hydraulic station using a hydraulic quick connector, realizing the mobility of the large hydraulic loading system. The installation is simple and quick, saves manpower, and can greatly save space above the furnace body, providing convenience for hoisting test samples and working on the furnace.

[0004] However, in actual use, although the above-mentioned equipment can adjust the position of the hydraulic rod according to the size of the horizontal building component to be tested, its adjustment range is limited. The space for applying pressure to the horizontal building component near the inner wall of the furnace is restricted, which can easily affect the uniformity of pressure application during the combustion test of the horizontal building component, and also easily affect the accuracy of the combustion test data of the horizontal building component. In view of this, we propose a combustion test furnace for horizontal building components. Utility Model Content

[0005] The purpose of this invention is to provide a horizontal building component combustion test furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a horizontal building component combustion test furnace, comprising a furnace body, a feeding hood movably installed on the side wall of the furnace body, and an adjustment assembly provided on the top of the furnace body;

[0007] The adjustment assembly includes an adjustment frame, which is fixedly installed on the top outer wall of the furnace body. A servo motor is fixedly installed on the side wall of the adjustment frame, and a transmission rod is fixedly installed at the output end of the servo motor. A crossbar is slidably installed on the inner wall of the adjustment frame, and an adjustment block is slidably installed on the inner wall of the crossbar. A hydraulic rod is fixedly installed on the bottom outer wall of the adjustment block. A toothed block is fixedly installed on the side wall of the adjustment frame. A fixing strip is fixedly installed on the side wall of the crossbar. A small cylinder is fixedly installed on the upper surface of the fixing strip. A sliding plate is fixedly installed at the output end of the small cylinder. A T-shaped block is fixedly installed on the lower surface of the sliding plate. A spring is fixedly installed on the side wall of the T-shaped block, and a toothed rack is slidably installed on the outer wall of the T-shaped block.

[0008] Preferably, the number of servo motors is set to multiple sets, and the multiple sets of servo motors are evenly distributed in a linear array on the side wall of the adjustment frame. At the same time, the number of crossbeams corresponds one-to-one with the number of servo motors.

[0009] Preferably, the outer arc-shaped wall of the transmission rod is provided with an external threaded cylinder, and the external threaded cylinder is fixedly connected to the transmission rod, and the inner wall of the crossbar is provided with a threaded hole that matches the external threaded cylinder.

[0010] Preferably, the inner wall of the crossbeam is provided with a through hole with a diameter larger than the outer diameter of the external threaded cylinder, which is horizontal to the threaded hole. This allows each set of servo motors and transmission rods to adjust the position of a set of crossbeams in the adjustment frame, and the through hole will not cause motion interference to other crossbeams during the adjustment process.

[0011] Preferably, the number of adjustment blocks is set in multiple sets, and the inner wall of the cross frame is provided with a sliding groove that matches the size of the adjustment blocks and the toothed blocks, so that the combination of the adjustment blocks and the toothed blocks can slide horizontally inside the cross frame.

[0012] Preferably, there are two sets of fixing bars, sliding plates, and racks, and the two sets of fixing bars, sliding plates, and racks are mirror images of each other on the upper and lower sides of the tooth block, so that the two sets of racks can clamp and limit the tooth block on the upper and lower sides, thereby allowing the adjusting block to be positioned after adjusting its position in the slide groove.

[0013] Preferably, the rack has a T-shaped groove on the inner wall near the slide plate that matches the T-shaped block, and the springs are provided in two sets, with the two sets of springs mirror images of each other on the left and right sides of the T-shaped block.

[0014] Compared with the prior art, this utility model provides a horizontal building component combustion test furnace, which has the following beneficial effects:

[0015] 1. This horizontal building component combustion test furnace is equipped with an adjustment component. With the control of the servo motor and the position change of the adjustment block in the slide groove opened in the cross frame, the hydraulic rod can be adjusted to any position in the furnace body. This allows it to adapt to the load simulation requirements of horizontal building components of different sizes during combustion tests, ensuring the adaptability of the device to horizontal building components of different sizes and improving the effectiveness of the device.

[0016] 2. This horizontal building component combustion test furnace is equipped with T-shaped blocks and T-shaped grooves inside the rack. This allows the rack to make a small horizontal displacement when it approaches the rack. This ensures that the rack can still fix and clamp the rack to the block even after the adjustment block is moved to any position in the groove. This improves the adaptability of the device during adjustment and can meet the compression requirements of combustion tests for horizontal building components of different sizes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the furnace body structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the toothed plate and sliding seat structure of this utility model;

[0021] Figure 5 This is a partial three-dimensional structural diagram of the adjustment component of this utility model.

[0022] In the diagram: 1. Furnace body; 2. Feed hood; 3. Adjustment assembly; 31. Adjustment frame; 32. Servo motor; 33. Transmission rod; 34. Horizontal frame; 35. Adjustment block; 36. Hydraulic rod; 37. Tooth block; 38. Fixing strip; 39. Small cylinder; 310. Slide plate; 311. T-block; 312. Spring; 313. Tooth rack. Detailed Implementation

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: a horizontal building component combustion test furnace, including a furnace body 1, a feed hood 2 movably installed on the side wall of the furnace body 1, and an adjustment assembly 3 provided on the top of the furnace body 1. The adjustment assembly 3 includes an adjustment frame 31, a servo motor 32, a transmission rod 33, a crossbar 34, an adjustment block 35, a hydraulic rod 36, a toothed block 37, a fixing strip 38, a small cylinder 39, a sliding plate 310, a T-shaped block 311, a spring 312, and a rack 313.

[0024] In one embodiment of this utility model, the adjusting frame 31 is fixedly installed on the top outer wall of the furnace body 1. A servo motor 32 is fixedly installed on the side wall of the adjusting frame 31. A transmission rod 33 is fixedly installed at the output end of the servo motor 32. A cross frame 34 is slidably installed on the inner wall of the adjusting frame 31. An adjusting block 35 is slidably installed on the inner wall of the cross frame 34. A hydraulic rod 36 is fixedly installed on the bottom outer wall of the adjusting block 35. A toothed block 37 is fixedly installed on the side wall of the adjusting frame 31. A fixing strip 38 is fixedly installed on the side wall of the cross frame 34. A small cylinder 39 is fixedly installed on the upper surface of the fixing strip 38. A sliding plate 310 is fixedly installed at the output end of the small cylinder 39. A T-shaped block 311 is fixedly installed on the lower surface of the sliding plate 310. A spring 312 is fixedly installed on the side wall of the T-shaped block 311. A rack 313 is slidably installed on the outer wall of the T-shaped block 311.

[0025] Furthermore, the feed hood 2 is movably installed on one side of the furnace body 1, and the interior of the furnace body 1 is equipped with a feeding rack parallel to the feed hood 2, so that the horizontal building components used for testing can enter the interior of the furnace body 1 through the position of the feed hood 2 for combustion testing. Simultaneously, the size of the adjustment frame 31 is adapted to the furnace body 1, so that the adjustment component 3 within the adjustment frame 31 can adjust the hydraulic rod 36 to any position inside the furnace body 1. Specifically, multiple sets of servo motors 32 are provided, and these multiple sets of servo motors 32 are evenly distributed in a linear array on the side wall of the adjustment frame 31. The number of crossbars 34 corresponds one-to-one with the number of servo motors 32. Specifically, the arc-shaped outer wall of the transmission rod 33 is provided with… The external threaded cylinder is fixedly connected to the transmission rod 33, and the inner wall of the cross frame 34 is provided with a threaded hole that matches the external threaded cylinder. By rotating the transmission rod 33, the cross frame 34 moves horizontally along the inner wall of the adjustment frame 31 under the transmission of the external threaded cylinder and the threaded hole. In addition, the inner wall of the cross frame 34 is provided with a through hole with a diameter larger than the outer diameter of the external threaded cylinder, which keeps horizontal with the threaded hole. This allows each set of servo motors 32 and transmission rods 33 to adjust the position of one set of cross frames 34 in the adjustment frame 31. During the adjustment process, the through hole will not cause movement interference to other cross frames 34, thereby improving the accuracy and stability of the hydraulic rod 36 position adjustment.

[0026] In addition, multiple sets of adjusting blocks 35 are provided, and the inner wall of the crossbeam 34 is provided with sliding grooves that are adapted to the size of the adjusting blocks 35 and the toothed blocks 37, so that the combination of the adjusting blocks 35 and the toothed blocks 37 can slide horizontally inside the crossbeam 34. Furthermore, two sets of toothed blocks 37 are provided, and the two sets of toothed blocks 37 are mirror images of each other on the left and right sides of the adjusting blocks 35. At the same time, the toothed blocks 37 are adapted to the teeth provided on the side of the rack 313. Specifically, two sets of fixing bars 38, sliding plates 310 and rack 313 are provided, and the two sets of fixing bars 38, sliding plates 310 and rack 313 are provided. Plate 310 and rack 313 are mirror images of each other on the upper and lower sides of toothed block 37, so that the two sets of racks 313 can clamp and limit toothed block 37 on the upper and lower sides, so that adjusting block 35 can be positioned after adjusting its position in the slide groove. At the same time, three sets of small cylinders 39 are provided, and the three sets of small cylinders 39 are evenly distributed in a linear array on the side of fixed bar 38 away from toothed block 37, so that when the three sets of small cylinders 39 are activated, they can control slide plate 310 to move vertically along the inner surface of fixed bar 38, so that rack 313 can move closer to or away from toothed block 37.

[0027] In this embodiment of the invention, a T-shaped groove adapted to the T-shaped block 311 is provided on the inner wall of the rack 313 near the slide plate 310. Two sets of springs 312 are provided, and the two sets of springs 312 are mirror images of each other on the left and right sides of the T-shaped block 311. Specifically, the two ends of the springs 312 are fixedly connected to the inner wall of the end of the T-shaped groove and the outer wall of the end of the T-shaped block 311, respectively. This allows the rack 313 to make a small horizontal displacement when it approaches the toothed block 37. This allows the adjusting block 35 to be fixed and clamped to the toothed block 37 by the rack 313 after it is moved to any position in the groove. This improves the adaptability of the device during adjustment and adapts to the compression requirements of combustion tests on horizontal building components of different sizes.

[0028] In this invention, during use, the feed hood 2 is opened, and the horizontal building component is inserted into the furnace body 1 through the opening of the feed hood 2. Then, according to the size of the horizontal building component, the servo motor 32 is started, cooperating with the external threaded cylinder sleeved on the outside of the transmission rod 33 to control the horizontal frame 34 to move laterally along the inner wall of the adjusting frame 31. Afterwards, the small cylinder 39 is controlled to drive the slide plate 310 and the rack 313 away from the toothed block 37, thereby releasing the limit on the adjusting block 35. The operator manually adjusts the adjusting block 35 to slide in the groove to move the small cylinder. 39 is adjusted to the target position, and then the small cylinder 39 is controlled to drive the slide plate 310 and the rack 313 to clamp and fix the tooth block 37 on the upper and lower sides. Then, all the hydraulic rods 36 under the adjustment frame 31 are activated, so that the hydraulic rods 36 are extended and contact the top of the horizontal building component, and generate downward extrusion force to simulate the load state of the horizontal building component. Then, the combustion components in the furnace body 1 are activated to simulate the fire resistance performance of the horizontal building component during a fire, obtain the combustion test data of the horizontal building component, and determine whether it is qualified.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A horizontal building component combustion test furnace, comprising a furnace body (1), wherein a feed hood (2) is movably installed on the side wall of the furnace body (1), characterized in that: An adjustment component (3) is provided on the top of the furnace body (1); The adjustment assembly (3) includes an adjustment frame (31), which is fixedly installed on the top outer wall of the furnace body (1). A servo motor (32) is fixedly installed on the side wall of the adjustment frame (31), and a transmission rod (33) is fixedly installed at the output end of the servo motor (32). A crossbeam (34) is slidably installed on the inner wall of the adjustment frame (31), and an adjustment block (35) is slidably installed on the inner wall of the crossbeam (34). A hydraulic rod (36) is fixedly installed on the bottom outer wall of the adjustment block (35). A toothed block (37) is fixedly installed on the side wall of the adjustment frame (31), a fixing strip (38) is fixedly installed on the side wall of the cross frame (34), a small cylinder (39) is fixedly installed on the upper surface of the fixing strip (38), a slide plate (310) is fixedly installed at the output end of the small cylinder (39), a T-shaped block (311) is fixedly installed on the lower surface of the slide plate (310), a spring (312) is fixedly installed on the side wall of the T-shaped block (311), and a toothed rack (313) is slidably installed on the outer wall of the T-shaped block (311).

2. The horizontal building component combustion test furnace according to claim 1, characterized in that: The number of servo motors (32) is set to multiple sets, and the multiple sets of servo motors (32) are evenly distributed in a linear array on the side wall of the adjustment frame (31). At the same time, the number of crossbeams (34) corresponds one-to-one with the number of servo motors (32).

3. The horizontal building component combustion test furnace according to claim 1, characterized in that: The transmission rod (33) has an external threaded cylinder on its arc-shaped outer wall, and the external threaded cylinder is fixedly connected to the transmission rod (33). The inner wall of the cross frame (34) has a threaded hole that matches the external threaded cylinder.

4. The horizontal building component combustion test furnace according to claim 3, characterized in that: The inner wall of the crossbar (34) is provided with a through hole with a diameter larger than the outer diameter of the external threaded cylinder, which is horizontally arranged with the threaded hole.

5. A combustion test furnace for horizontal building components according to claim 1, characterized in that: The number of the adjustment blocks (35) is set in multiple sets, and the inner wall of the cross frame (34) is provided with a sliding groove that matches the size of the adjustment blocks (35) and the toothed blocks (37).

6. The horizontal building component combustion test furnace according to claim 1, characterized in that: The number of fixing bars (38), sliding plates (310) and racks (313) is set in two sets, and the two sets of fixing bars (38), sliding plates (310) and racks (313) are mirror images of each other on the upper and lower sides of the tooth block (37).

7. A combustion test furnace for horizontal building components according to claim 1, characterized in that: The rack (313) has a T-shaped groove on the inner wall of the side near the slide plate (310) that is compatible with the T-shaped block (311), and the number of springs (312) is set to two sets, and the two sets of springs (312) are mirror images of each other on the left and right sides of the T-shaped block (311).

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