Glued wood beam bending stiffness testing device and method

Abstract

The invention discloses a device and method for detecting the bending stiffness of a glued laminated wood beam, and relates to the technical field of building materials. The device and method comprise a detection box and a material storage box, wherein a bending device is arranged on the top of the detection box, a supporting device is arranged inside the detection box, a material changing system is arranged in the material storage box, and a plurality of material storage barrels are installed in the material changing system, a connecting hole is opened in the right box wall of the material storage box, the connecting hole is connected with the material storage box through the connecting box, a conveyor belt for transferring materials between the detection box and the material storage box is arranged in the connecting box, and a humidity regulator and a temperature regulator are also arranged in the detection box; the device and the method can make the selection of different combinations of different degrees of temperature and humidity of the structure of the glued laminated wood beam itself and the temperature and humidity of the environment in which it is located more diverse and refined, thereby facilitating the detection data of the bending stiffness of the glued laminated wood beam to be more real and effective, and making the detection efficiency higher.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a device and a method for detecting the bending rigidity of a glued wood beam. Background Art

[0002] As a commonly used building material, glued laminated timber beams play an important role in engineering structures. In order to ensure their strength and stability, their flexural stiffness needs to be tested. Since glued laminated timber beams are affected by environmental factors, such as the ambient temperature and humidity of the environment in which the glued laminated timber beams are located, their own flexural stiffness will change. However, most of the flexural stiffness detection devices generally used to detect glued laminated timber beams are directly used to test the flexural stiffness of glued laminated timber beams, resulting in incomplete and inaccurate test data for glued laminated timber beams; and some equipment that can simulate factors such as ambient temperature and humidity is difficult to adapt to the environment in which the glued laminated timber beams are located, and the control efficiency is low, which affects the detection efficiency of the flexural stiffness detection of glued laminated timber beams.

[0003] Therefore, those skilled in the art provide a device and method for detecting the bending stiffness of glued laminated timber beams to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bending stiffness detection device for glued laminated timber beams, comprising a detection box and a material storage box, a bending device is arranged on the top of the detection box, a supporting device is arranged inside the detection box, a material changing system is arranged in the material storage box, and a plurality of material storage barrels are installed in the material changing system, and a connecting hole is opened in the right side box wall of the material storage box, the connecting hole is connected with the material storage box through a connecting box, and a conveyor belt for transferring materials between the detection box and the material storage box is arranged in the connecting box, and a humidity regulator and a temperature regulator are also arranged in the detection box.

[0005] Further, as a preference, the material changing system includes a rotating shaft, a regulating motor, a sealing sleeve and an environmental simulation system, wherein two ends of the rotating shaft are rotatably connected to the left and right side walls of the material storage box, and a fixing turntable is fixedly sleeved on the outside of the rotating shaft, and a plurality of fixing hole grooves are provided on the fixing turntable, and one of the fixing hole grooves is used to assemble a material storage barrel member, and the regulating motor is arranged on the outside of the material storage box and is used to drive the regulating rotating shaft to rotate, and the left and right side walls of the material storage box are also connected to coaxially arranged sealing covers, and the outer ports of the sealing covers on the left and right sides are respectively connected to the environmental simulation system, and a sleeve hole is opened in the sealing sleeve, and when the material storage barrel member is rotated and regulated to correspond to the sealing cover, the material storage barrel member and the sealing cover are in a coaxial structure, and the sealing sleeve is used to be fixedly sleeved on the barrel ends of the plurality of material storage barrel members, and the inner box walls on the left and right sides of the material storage box are also provided with sealing rings sleeved on the outside of the sealing sleeve.

[0006] Further, as a preference, the environmental simulation system includes a connecting tube, the left and right ends of the connecting tube are respectively connected to the sealing covers on the left and right sides, flow control fans are provided on both sides of the connecting tube close to the sealing cover, a spiral heat exchange tube is provided in the middle of the connecting tube, the heat exchange tube is connected to a heat exchange module for heat exchange temperature, and a moisture inlet tube is also connected to the connecting tube, and the moisture inlet tube is connected to a moisture supply module for supplying moisture.

[0007] Further, preferably, the pipe opening of the moisture introduction pipe located inside the connecting tube is connected to a diffusion cone, a diffusion hole is opened on the wall of the diffusion cone, and the diffusion cone is coaxially arranged in the spiral heat exchange tube.

[0008] Further, as a preference, the material storage barrel member comprises a material storage barrel, in which a drainage screw blade is installed to form a spiral drainage chamber, and a square opening for storing materials is formed in the axial region and axial direction of the drainage screw blade.

[0009] Further, preferably, a plurality of temperature and humidity sensors are arranged in the spiral drainage cavity at intervals, and the interval distance between adjacent temperature and humidity sensors is the same as the pitch of the spiral drainage cavity.

[0010] Further, as a preference, the material storage barrel also includes a drainage spiral blade cover, in which hygroscopic cotton is spirally inserted, and square opening two and square opening three are respectively opened in the axial area and axial direction of the drainage spiral blade cover and the hygroscopic cotton, the drainage spiral blade cover and the hygroscopic cotton are spirally inserted on the outside of the drainage spiral blade, and the length and width of square opening two and square opening three are respectively greater than the length and width of square opening one, and the length and width of square opening three are respectively smaller than the length and width of square opening two.

[0011] Further, as a preference, the left side wall of the material storage box is provided with a matching hole coaxially arranged with the connecting hole, the matching hole is sealed with a barrel cover, a telescopic rod 1 is coaxially assembled in the barrel cover, and a telescopic rod 2 coaxially arranged with the connecting hole is installed on the right side wall of the detection box.

[0012] Further, as a preference, the supporting device comprises a moving device arranged at the bottom of the detection box, the moving device is provided with a moving seat, the moving seat is provided with a support rod that can be telescopically adjusted, and a lifting device is provided on the rear wall of the detection box, the lifting device is provided with a contact column rod pointing forward and backward.

[0013] A method for testing the bending stiffness of a glued laminated timber beam comprises the following steps:

[0014] S1: According to the cross-sectional shape of the glued wood beam, select the storage cylinder that matches the specifications of the drainage screw cover and assemble it in the storage box;

[0015] S2: by adjusting the motor to adjust the rotation of the shaft, the corresponding storage barrel is aligned with the connecting hole, and the corresponding glued wood beam is placed on the support rod, and the glued wood beam is driven to be coaxially aligned with the connecting hole by the lifting of the support rod, and then the second telescopic rod is pushed to the left to make the glued wood beam enter the conveyor belt, and then the conveyor belt is passed into the corresponding storage barrel and separated from the conveyor belt, and then the left telescopic rod is pushed to the right to place the glued wood beam in the storage barrel, and the above process is repeated to complete the assembly of the glued wood beam and the storage barrel to be tested;

[0016] S3: regulating the humidity regulator and the temperature regulator according to the external environment temperature and humidity conditions required by the required glued laminated timber beams;

[0017] S4: According to the temperature and humidity conditions of the required glulam beam structure, it is regulated through the environmental simulation system;

[0018] S5: The glued laminated timber beam placed in the test box is bent by a bending device, and the vertical height of the bending is directly obtained by the cooperation of the contact column and the lifting device.

[0019] Compared with the prior art, the present invention provides a device and method for testing the bending stiffness of glued laminated wood beams, which has the following beneficial effects:

[0020] The arrangement of the detection box, the material storage box and the connecting box in the present invention can make the environment for the bending stiffness detection of the glued wood beams in a sealed state, which is convenient for simulating the external environment of the glued wood beams through the humidity regulator and the temperature regulator, and is convenient for changing the temperature and humidity of the glued wood beam structure itself, thereby improving the temperature and humidity regulation efficiency, and then improving the bending stiffness detection efficiency, especially when multiple glued wood beams are detected, the improvement in detection efficiency is more significant; in addition, the transfer of the glued wood beams through the coordination of structures such as the material changing system and the conveyor belt, especially the ability to transfer back and forth between the detection box and the material storage box multiple times, makes the time utilization rate of the entire detection process more efficient, and the operation is simple and flexible, which can make the selection of different combinations of different degrees of temperature and humidity of the glued wood beam structure itself and the temperature and humidity of the environment in which it is located more diverse and refined, thereby making the bending stiffness detection data of the glued wood beams more real and effective, and making the detection efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the overall internal structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the material changing system in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the material storage barrel in the present invention;

[0025] Figure 5 It is a right side structural schematic diagram of the material storage barrel member in the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the moisture-absorbing cotton in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the environmental simulation system in the present invention;

[0028] In the figure: 1, detection box; 2, bending device; 3, supporting device; 4, connecting box; 5, material storage box; 6, material changing system; 7, material storage barrel; 8, environmental simulation system; 9, barrel cover; 10, telescopic rod 1; 11, telescopic rod 2; 31, supporting rod; 32, moving seat; 33, moving device; 34, lifting device; 35, contact column; 41, conveyor belt; 61, rotating shaft; 62, fixed turntable; 63, regulating motor; 64, connecting hole; 65, sealing Envelope plate; 66, sealing ring; 621, fixing hole groove; 651, sleeve hole; 71, storage barrel; 72, drainage screw blade; 73, temperature and humidity sensor; 74, drainage screw blade cover; 75, moisture-absorbing cotton; 721, square opening one; 741, square opening two; 81, sealing cover; 82, connecting tube; 83, diffusion cone; 84, heat exchange tube; 85, flow control fan; 86, humidity regulator; 87, temperature regulator; 831, diffusion hole; 832, moisture inlet tube. DETAILED DESCRIPTION

[0029] Reference Figure 1-Figure 7The present invention provides a technical solution: a device for testing the bending stiffness of a glued laminated timber beam, comprising a testing box 1 and a material storage box 5, wherein a bending device 2 is arranged on the top of the testing box 1, a supporting device 3 is arranged inside the testing box 1, a material changing system 6 is arranged in the material storage box 5, and a plurality of material storage barrels 7 are installed in the material changing system 6, and a connecting hole 64 is opened in the right box wall of the material storage box 5, the connecting hole 64 is connected with the material storage box 5 through a connecting box 4, and a conveyor belt 41 for transferring materials between the testing box 1 and the material storage box 5 is arranged in the connecting box 4, and a humidity regulator 86 and a temperature regulator 87 are also arranged in the testing box 1; wherein the setting of the testing box 1, the material storage box 5 and the connecting box 4 can make the environment for testing the bending stiffness of the glued laminated timber beam relatively sealed, so as to facilitate the passing of The humidity regulator 86 and the temperature regulator 87 simulate the external environment in which the glued timber beam is located, and facilitate the change of the temperature and humidity of the glued timber beam structure itself, thereby improving the temperature and humidity regulation efficiency, and thus improving the bending stiffness detection efficiency, especially when multiple glued timber beams are detected, the improvement in detection efficiency is more significant; in addition, the transfer of the glued timber beams through the coordination of the material changing system 6, the conveyor belt 41 and other structures, especially the ability to transfer the glued timber beams back and forth multiple times between the detection box 1 and the material storage box 5, makes the time utilization of the entire detection process more efficient, and the operation is simple and flexible, which can make the selection of different combinations of different degrees of temperature and humidity of the glued timber beam structure itself and the temperature and humidity of the environment in which it is located more diverse and refined, which is conducive to making the bending stiffness detection data of the glued timber beam more real and effective, and making the detection efficiency higher.

[0030] In this embodiment, the material changing system 6 includes a rotating shaft 61, a regulating motor 63, a sealing sleeve 65 and an environmental simulation system 8. The two ends of the rotating shaft 61 are rotatably connected to the left and right side walls of the material storage box 5 respectively. The rotating shaft 61 is fixedly sleeved with a retaining turntable 62 on the outside. The retaining turntable 62 is provided with a plurality of clamping grooves 621. One of the clamping grooves 621 is used to assemble one of the material storage barrels 7. The regulating motor 63 is arranged on the outside of the material storage box 5 and is used to drive the regulating rotating shaft 61 to rotate. The left and right side walls of the material storage box 5 are also connected with sealing covers 81 arranged coaxially, respectively. The outer ports of the sealing covers 81 on the left and right sides are respectively connected to the environmental simulation system 8, and a sleeve hole 651 is opened in the sealing sleeve 65. When the material storage barrel 7 is rotated and regulated to correspond to the sealing cover 81, the material storage barrel 7 and the sealing cover 81 are in Coaxial structure, the sealing sleeve 65 is used to be fixedly sleeved on the ends of the multiple material storage barrels 7, and the inner box walls on the left and right sides of the material storage box 5 are also provided with sealing rings 66 sleeved on the outside of the sealing sleeve 65; therefore, that is to say, through the design of this structure, when a group of glued timber beams are subjected to bending resistance testing, the remaining glued timber beams can be simultaneously adjusted to the temperature and humidity conditions required for the next bending resistance testing; wherein, when the sealing ring 66 can have a relative sealing effect on the sealing sleeve 65, a small gap is reserved between the sealing sleeve 65 and the sealing ring 66 to avoid large friction; specifically, when the rotating shaft 61 adjusts the material storage barrel 7 to be coaxially aligned with the sealing cover 81, the environmental simulation system 8 can efficiently adjust the temperature and humidity of the glued timber beam itself to the state required for the next bending stiffness testing.

[0031] In this embodiment, the environmental simulation system 8 includes a connecting tube 82, the left and right ends of which are respectively connected to the sealing covers 81 on the left and right sides, and flow control fans 85 are provided on both sides of the connecting tube 82 close to the sealing cover 81. A spiral heat exchange tube 84 is provided in the middle of the connecting tube 82, and the heat exchange tube 84 is connected to a heat exchange module for heat exchange temperature. The connecting tube 82 is also connected to a moisture introduction tube 832, and the moisture introduction tube 832 is connected to a moisture supply module for supplying moisture, wherein the heat exchange module and the moisture supply module are both used in conjunction with the existing device modules, and therefore, they are not explicitly shown in the figure; specifically, the flow rate of the moisture is regulated by the flow control fan 85 so that the moisture in the moisture can be better transferred to the glued laminated wood beam; in addition, by changing its acidity and alkalinity, the acidity and alkalinity of the glued laminated wood beam with a certain humidity can be further changed, and the bending stiffness of the glued laminated wood beam under acidic and alkaline conditions can be tested.

[0032] In this embodiment, the pipe mouth of the moisture inlet pipe 832 located inside the connecting tube 82 is connected to the diffusion cone 83, the tube wall of the diffusion cone 83 is provided with a diffusion hole 831, and the diffusion cone 83 is coaxially arranged in the spiral heat exchange tube 84. The diffusion cone 83 can improve the diffusion efficiency and uniformity of moisture and heat.

[0033] In this embodiment, the material storage barrel 7 includes a material storage barrel 71, in which a drainage spiral blade 72 is installed to form a spiral drainage chamber, and a square opening 721 for storing materials is formed in the axial area and axial direction of the drainage spiral blade 72; a plurality of temperature and humidity sensors 73 are arranged in the spiral drainage chamber, and the spacing distance between adjacent temperature and humidity sensors 73 is the same as the pitch of the spiral drainage chamber; the material storage barrel 7 also includes a drainage spiral blade cover 74, in which a moisture-absorbing cotton 75 is spirally sleeved, and the drainage spiral blade cover 74, The axial region and axial direction of the moisture-absorbing cotton 75 are respectively provided with a second square opening 741 and a third square opening. The drainage spiral blade cover 74 and the moisture-absorbing cotton 75 are spirally sleeved on the outside of the drainage spiral blade 72, and the length and width of the second square opening 741 and the third square opening are respectively greater than the length and width of the first square opening 721, and the length and width of the third square opening are respectively less than the length and width of the second square opening 741. The spiral drainage cavity can increase the area of ​​the surface of the laminated wood beam impacted by the wet air, that is, the wet air can rotate, and the wet air will produce when passing through the surface of the laminated wood beam. A certain friction and impact force are generated, which will promote the wood fibers and pores on the surface of the glued wood beam to become more open, making it easier for moisture to penetrate the wood surface into the wood, so that the humid air can more fully contact the wood surface, further promote the penetration and diffusion of moisture into the interior, and can effectively ensure that the humid air can fully and evenly cover each part of the glued wood beam, thereby improving the efficiency of consistent humidity control inside and outside; then, through the arrangement of the temperature and humidity sensors, the temperature and humidity of the humid air can be accurately controlled and monitored, and feedback is provided to enable the flow control fan 85 to regulate the flow velocity and flow direction. For example, when the difference in the monitoring data on both sides is large, the alternating frequency, alternating interval time or flow velocity of the flow control fan 85 is increased to ensure the accuracy and repeatability of the regulation effect; in addition, the role of the moisture-absorbing cotton 75 is mainly to absorb the moisture that may be accumulated and flowed on the surface of the drainage screw cover 74, so as to avoid the accumulation of too much moisture flowing to the surface of the glued wood beam, that is, the way to promote the temperature and humidity of the glued wood beam to be regulated is mainly changed by the impact of humid air, so that the temperature and humidity of the glued wood beam can be efficiently and evenly regulated.

[0034] In this embodiment, the left side wall of the material storage box 5 is provided with a matching hole coaxially arranged with the connecting hole 64, and the matching hole is sealed with a barrel cover 9. A telescopic rod 10 is coaxially assembled in the barrel cover 9, and a telescopic rod 11 coaxially arranged with the connecting hole 64 is installed on the right side wall of the detection box 1, which is used to cooperate with the glued wood beam to be completely located in the material storage barrel 7.

[0035] In this embodiment, the supporting device 3 includes a moving device 33 arranged at the bottom of the detection box 1, and a moving seat 32 is provided on the moving device 33, and a support rod 31 that can be telescopically adjusted is installed on the moving seat 32. A lifting device 34 is provided on the rear wall of the detection box 1, and a front-to-back pointing contact column 35 is installed on the lifting device 34. The contact induction of the contact column 35 and the glued wood beam is fed back to the lifting device 34, and moves downward synchronously, so that the vertical height of the bending can be quickly obtained, so as to analyze and calculate the anti-bending stiffness.

[0036] In a specific implementation, a method for testing the bending stiffness of a glued laminated timber beam comprises the following steps:

[0037] S1: According to the cross-sectional shape of the glued wood beam, select the storage cylinder 7 that matches the specifications of the drainage screw cover 74 and assemble it in the storage box 5;

[0038] S2: The motor 63 is used to control the rotation of the rotating shaft 61 so that the corresponding storage barrel 7 is aligned with the connecting hole 64, and the corresponding glued wood beam is placed on the support rod 31. The lifting and lowering of the support rod 31 drives the glued wood beam to be coaxially aligned with the connecting hole 64, and then the telescopic rod 11 is pushed to the left to cause the glued wood beam to enter the conveyor belt 41, and then the conveyor belt 41 is passed into the corresponding storage barrel 7 and separated from the conveyor belt 41, and then the left telescopic rod 10 is pushed to the right to place the glued wood beam in the storage barrel 7. The above process is repeated to complete the assembly of the glued wood beam to be tested and the storage barrel 7;

[0039] S3: regulating the humidity regulator 86 and the temperature regulator 87 according to the external environment temperature and humidity conditions required by the required glued laminated timber beams;

[0040] S4: According to the temperature and humidity conditions of the required glued laminated timber beam structure itself, the environmental simulation system 8 is used to control it;

[0041] S5: The glued laminated timber beam placed in the detection box 1 is subjected to bending processing by the bending device 2, and the contact column rod 35 cooperates with the lifting device 34 to directly obtain the bending vertical height.

[0042] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing the bending stiffness of a glued laminated timber beam, comprising a testing box (1) and a material storage box (5), characterized in that: A bending device (2) is provided on the top of the detection box (1), a supporting device (3) is provided inside the detection box (1), a material changing system (6) is provided in the material storage box (5), and a plurality of material storage barrels (7) are installed in the material changing system (6), and a connecting hole (64) is opened in the right box wall of the material storage box (5), the connecting hole (64) and the material storage box (5) are connected through a connecting box (4), and a conveyor belt (41) for transferring materials between the detection box (1) and the material storage box (5) is provided in the connecting box (4), and a humidity regulator (86) and a temperature regulator (87) are also provided in the detection box (1); The material changing system (6) comprises a rotating shaft (61), a regulating motor (63), a sealing sleeve (65) and an environmental simulation system (8); the two ends of the rotating shaft (61) are rotatably connected to the left and right side walls of the material storage box (5), respectively; a retaining rotating disc (62) is fixedly sleeved on the outside of the rotating shaft (61); a plurality of fixing holes (621) are provided on the retaining rotating disc (62); one of the fixing holes (621) is used for assembling one of the material storage barrels (7); the regulating motor (63) is arranged on the outside of the material storage box (5) and is used for driving the regulating rotating shaft (61) to rotate; the left side of the material storage box (5) is provided with a plurality of fixing holes (621); and the fixing holes (621) are provided with a plurality of fixing holes (621). The right and left box walls are also connected to sealing covers (81) arranged coaxially, respectively. The outer ports of the sealing covers (81) on the left and right sides are connected to the environmental simulation system (8) respectively. A sleeve hole (651) is provided in the sealing sleeve (65). When the material storage barrel (7) is rotated and adjusted to correspond to the sealing cover (81), the material storage barrel (7) and the sealing cover (81) are in a coaxial structure. The sealing sleeve (65) is used to be fixedly sleeved on the barrel ends of a plurality of material storage barrels (7). The inner box walls on the left and right sides of the material storage box (5) are also provided with sealing rings (66) sleeved on the outside of the sealing sleeve (65).

2. The flexural stiffness testing device for glued laminated timber beams according to claim 1, characterized in that: The environmental simulation system (8) comprises a connecting tube (82), the left and right ends of the connecting tube (82) are respectively connected to the sealing covers (81) on the left and right sides, the connecting tube (82) is provided with flow control fans (85) on both sides close to the sealing cover (81), the middle part of the connecting tube (82) is provided with a spiral heat exchange tube (84), the heat exchange tube (84) is connected to a heat exchange module for heat exchange temperature, and the connecting tube (82) is also connected to a moisture introduction tube (832), and the moisture introduction tube (832) is connected to a moisture supply module for supplying moisture.

3. The flexural stiffness testing device for glued laminated timber beams according to claim 2, characterized in that: The pipe opening of the moisture introduction pipe (832) located inside the connecting tube (82) is connected to the diffusion cone (83), the tube wall of the diffusion cone (83) is provided with a diffusion hole (831), and the diffusion cone (83) is coaxially arranged to penetrate the spiral heat exchange tube (84).

4. The flexural rigidity testing device for glued laminated timber beams according to claim 3, characterized in that: The material storage barrel member (7) comprises a material storage barrel (71), wherein a drainage spiral blade (72) is mounted in the material storage barrel (71) to form a spiral drainage chamber, and a square opening (721) for storing materials is formed in the axial region and in the axial direction of the drainage spiral blade (72).

5. The flexural rigidity testing device for glued laminated timber beams according to claim 4, characterized in that: A plurality of temperature and humidity sensors (73) are arranged at intervals in the spiral drainage cavity, and the interval distance between adjacent temperature and humidity sensors (73) is the same as the pitch of the spiral drainage cavity.

6. The device for testing the bending stiffness of a glued laminated timber beam according to claim 5, characterized in that: The material storage barrel (7) further comprises a drainage spiral blade cover (74), a moisture-absorbing cotton (75) is spirally sleeved in the drainage spiral blade cover (74), and a square opening 2 (741) and a square opening 3 are respectively opened in the axial region and the axial direction of the drainage spiral blade cover (74) and the moisture-absorbing cotton (75), the drainage spiral blade cover (74) and the moisture-absorbing cotton (75) are spirally sleeved on the outside of the drainage spiral blade (72), and the length and width of the square opening 2 (741) and the square opening 3 are respectively greater than the length and width of the square opening 1 (721), and the length and width of the square opening 3 are respectively less than the length and width of the square opening 2 (741).

7. The device for testing the bending stiffness of a glued laminated timber beam according to claim 6, characterized in that: A matching hole coaxially arranged with the communicating hole (64) is provided on the left side wall of the material storage box (5), a barrel cover (9) is sealed outside the matching hole, a telescopic rod (10) is coaxially assembled in the barrel cover (9), and a telescopic rod (11) coaxially arranged with the communicating hole (64) is installed on the right side wall of the detection box (1).

8. The device for testing the bending stiffness of a glued laminated timber beam according to claim 7, characterized in that: The support device (3) comprises a moving device (33) arranged at the bottom of the detection box (1), a moving seat (32) being arranged on the moving device (33), a support rod (31) being mounted on the moving seat (32) and being capable of being telescopically regulated, a lifting device (34) being arranged on the rear wall of the detection box (1), and a contact column rod (35) being mounted on the lifting device (34) and pointing forward and backward.

9. A method for testing the bending stiffness of a glued laminated timber beam, using the device for testing the bending stiffness of a glued laminated timber beam as claimed in claim 8, characterized in that: The following steps are involved: S1: According to the cross-sectional shape of the glued wood beam, a material storage cylinder (7) matching the specifications of the drainage screw cover (74) is selected and assembled in the material storage box (5); S2: by adjusting the motor (63) to adjust the rotation shaft (61) to rotate, the corresponding storage barrel (7) is aligned with the connecting hole (64), and the corresponding glued wood beam is placed on the support rod (31), and the glued wood beam is driven to be coaxially aligned with the connecting hole (64) by the lifting and lowering of the support rod (31), and then the second telescopic rod (11) is pushed to the left to make the glued wood beam enter the conveyor belt (41), and then the conveyor belt (41) is passed into the corresponding storage barrel (7) and separated from the conveyor belt (41), and then the left telescopic rod (10) is pushed to the right to make the glued wood beam placed in the storage barrel (7), and the above process is repeated to complete the assembly of the glued wood beam to be tested and the storage barrel (7); S3: regulating the humidity regulator (86) and the temperature regulator (87) according to the external environment temperature and humidity conditions required by the required glued laminated timber beams; S4: According to the temperature and humidity conditions of the required glulam beam structure, the glulam beam is regulated by the environmental simulation system (8); S5: The glued laminated timber beam placed in the detection box (1) is subjected to bending processing by means of the bending device (2), and the contact column rod (35) cooperates with the lifting device (34) to directly obtain the vertical height of the bending.

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