Strength detection device and method for floor production and processing
By introducing a buffer component and an adaptive adjustment mechanism into the floor strength testing device, the problem of load sensor being easily damaged by instantaneous impact is solved, thereby improving the protection of the load sensor and the comprehensiveness and accuracy of the test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG LIPIN FLOORING TECH CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-12
AI Technical Summary
In existing floor strength testing devices, the load sensor is easily damaged by instantaneous impact loads during the testing process, resulting in reduced accuracy of test data and shortened equipment life, affecting the continuity and efficiency of testing.
It employs a buffer component and an adaptive adjustment mechanism, using a buffer spring to absorb impact energy and prevent rigid impacts from being transmitted to the load sensor. The number of spring coils is adjusted when switching detection modes to adapt to the impact characteristics of different detection methods.
It effectively protects the load sensor, extends its service life, improves detection accuracy and stability, enhances the comprehensiveness and precision of detection, and ensures the versatility and practicality of the equipment.
Smart Images
Figure CN122016510A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sampling and testing technology, specifically to a strength testing device and method for flooring production and processing. Background Technology
[0002] A smart load sensor is a force-to-electric conversion device that converts force (tension, pressure, torque, etc.) into a measurable electrical signal. It belongs to the core type of force sensor. It converts mechanical quantities into electrical quantities through the deformation of elastic elements in conjunction with sensing elements, so as to achieve accurate measurement of force or weight. It is a precision measuring device based on elastic deformation and resistance strain effect (or other physical effects). It can convert the force signal acting on it into an electrical signal output that is proportional to the force. It is widely used in industrial weighing, force detection and process control.
[0003] Floor strength testing focuses on assessing the load-bearing capacity, resistance to deformation, and resistance to damage of flooring / flooring under static loads, concentrated loads, bending, and impact. It is divided into laboratory type testing and on-site acceptance testing. The purpose of the testing is to verify whether the flooring meets design load-bearing and safety requirements, to determine whether the flooring is cracked, collapsed, or excessively deformed, and to provide data for project acceptance, quality arbitration, and product certification.
[0004] In existing technologies, the three-point bending method and four-point bending method are commonly used when testing flooring. During strength testing, a loading head of the testing device typically applies a vertical load to the board under test. By monitoring the stress during load application, key mechanical indicators such as bending strength are determined. However, in actual testing, as the loading head continuously applies the vertical load, the flooring will reach its stress limit and fracture. During fracture, the flooring generates a momentary impact load, which can be directly transmitted to the load sensing component along the force transmission structure of the testing device. Long-term exposure to such momentary impacts can lead to load sensor structural failure, significantly reducing the accuracy and reliability of the test data, shortening the overall lifespan of the testing equipment, and negatively impacting the continuity and overall efficiency of the testing operation. Summary of the Invention
[0005] Therefore, the purpose of this invention is to provide a strength testing device and method for flooring production and processing, so as to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a strength testing device for floor production and processing, comprising a base, two sets of support frames connected to the upper surface of the base, electric push rods fixedly connected to both ends of the two sets of support frames, a positioning plate connected to the output end of the electric push rods, brackets connected to both sides of the upper surface of the base on the two sets of support frames, and cylinders installed at the top of the brackets, a moving plate connected to the output end of the cylinders, and a testing component for testing the floor fixedly connected to the lower surface of the moving plate, the testing component including a pressure head for applying pressure to the floor, the testing component including a lower seat and an upper seat, a load sensor installed at the top of the upper seat, and buffer components for protecting the load sensor provided on the lower seat and the upper seat.
[0007] Preferably, the top of the upper seat is fixedly connected to the movable plate via a connecting rod, and the lower surface of the upper seat has symmetrical deep holes. A snap-fit component is embedded in the inner wall of the deep hole, and a compression spring is assembled at the top of the snap-fit component inside the deep hole.
[0008] Preferably, a snap-fit groove is provided on the upper surface of the lower seat at the position corresponding to the snap-fit component, a top block is slidably connected to the inner wall of the snap-fit groove, a return spring connected to the lower seat is fixedly connected to the bottom end of the top block, and the snap-fit component matches the snap-fit groove.
[0009] Preferably, multiple sets of guide rods are symmetrically fixedly connected to the upper surface of the lower seat, the upper seat is slidably connected to the outer wall of the guide rods, and each set of guide rods has a buffer spring sleeved on its outer wall, with the top end of the buffer spring fixedly connected to the bottom end of the upper seat.
[0010] Preferably, the upper surface of the lower seat is provided with multiple sets of rotating blocks, the top of the rotating blocks is provided with a storage groove, and the bottom end of the buffer spring extends to the inner wall of the storage groove.
[0011] Preferably, the bottom end of the lower seat is provided with a guide groove, the inner wall of the guide groove is slidably connected with an installation plate, and the lower surface of the installation plate is provided with a pressure head.
[0012] Preferably, a rack is fixedly connected to the top of the mounting plate, a cavity is opened at the bottom of the lower seat between the guide grooves, a gear is fixedly sleeved on the outer wall of the rotating block, and the rack meshes with the gear.
[0013] A strength testing method for flooring production and processing includes the following steps:
[0014] S1: Place the floor to be tested on the support frame, and apply lateral positioning force to both ends of the floor using the electric push rod and positioning plate. Adjust the position of the floor so that the center line of the pressure head is aligned with the center line of the floor, ensuring that the floor is in the middle of the support frame.
[0015] S2: Floor Inspection: The cylinder drives the upper and lower seats to move down synchronously. After the pressure head contacts the floor, it continues to descend. The upper seat locking piece engages with the lower seat locking slot, the return spring is compressed, and the upper and lower seats form a rigid connection to stably transfer the load. The four-point bending test method is used to complete the floor bending strength test.
[0016] S3: Impact Buffering and Protection: When the floor breaks, the lower seat will move downward instantaneously, the snap-fit part will disengage from the snap-fit groove, and the buffer spring on the outer wall of the guide rod will absorb the impact energy, convert the downward kinetic energy into elastic potential energy, attenuate the impact load, avoid rigid impact, and achieve protection for the load sensor.
[0017] S4: Mode Switching: After the four-point bending test is completed, the pressure head is reset. Through the cooperation of the guide block and the guide groove, the mounting plate is driven to move horizontally under the action of the pull rod. The mode switches to a single pressure head and is positioned. The three-point bending test method is used to test the same specification of flooring. By comparing the two test results, the comprehensiveness and accuracy of the test are improved, and the flooring strength test is completed.
[0018] S5: Adaptive Adjustment: When switching to three-point bending detection, the rack, gear and rotating block are used to rotate the buffer spring to increase its effective number of elastic coils, improve the buffer energy absorption effect, and achieve adaptability protection for the load sensor in both detection modes.
[0019] In summary, the present invention has the following main beneficial effects:
[0020] 1. This invention utilizes a buffer assembly. During the detection process, when the ground plate reaches its stress limit and breaks, the lower seat experiences a momentary downward displacement due to the inertia of the pressure head. At this moment, the upper seat disengages from the lower seat, the reset spring elastically returns, causing the top block to reset and applying a pushing force to the locking component. This causes the locking component to quickly disengage from the locking groove, achieving complete separation of the upper and lower seats. This immediately cuts off the rigid transmission path of the impact load. Simultaneously, the buffer spring mounted on the outer wall of the guide rod buffers the impact, converting the kinetic energy of the falling lower seat into its own elastic potential energy, effectively attenuating the impact load and preventing rigid collisions between the upper and lower seats. This also prevents the reverse impact load from being transmitted to the load sensor, effectively protecting the load sensor. To a certain extent, this reduces the damage to the load sensor caused by instantaneous impacts, extending the service life and detection accuracy stability of the load sensor.
[0021] 2. When switching from the four-point bending detection method to the three-point bending detection method, the mounting plate moves during the process. The meshing gears driven by the rack rotate, which in turn drives the rotating block to rotate, thereby gradually unscrewing the buffer spring. This increases the effective number of elastic coils of the buffer spring and enhances its buffering and energy absorption effect. This achieves adaptability protection for the larger load of the three-point bending detection method, making it easier to adapt to the different impact characteristics of the two detection modes. To a certain extent, it improves the safety and stability of the detection operation under different detection modes and enhances the versatility and practicality of the equipment.
[0022] 3. This invention uses the guiding and limiting function of the guide block and guide groove, combined with the pull rod to drive the installation plate to move horizontally, to achieve rapid switching of the pressure head. It can easily switch from the four-point bending test method to the three-point bending test method. By comparing the test results of the two test methods, it can comprehensively characterize the ultimate load-bearing capacity and overall bending uniformity of the floor, greatly improving the comprehensiveness and accuracy of the floor strength test. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;
[0024] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the support base of the present invention;
[0025] Figure 3 This is a three-dimensional schematic diagram of the overall structure of the cylinder and detection assembly of the present invention;
[0026] Figure 4 This is a bottom-view perspective view of the overall structure of the lower base of the present invention;
[0027] Figure 5 This is a three-dimensional disassembly diagram of the lower support structure of the present invention;
[0028] Figure 6 This is a three-dimensional disassembly diagram of the upper structure of the present invention;
[0029] Figure 7 This is a three-dimensional top view of the rotating block structure of the present invention;
[0030] Figure 8 This is a top-view perspective view of a portion of the detection component structure of the present invention.
[0031] In the diagram: 1. Base; 11. Support frame; 12. Electric push rod; 121. Positioning plate; 2. Cylinder; 21. Moving plate; 3. Load sensor; 41. Lower seat; 411. Guide groove; 412. Snap-fit groove; 42. Guide rod; 43. Upper seat; 431. Deep hole; 44. Mounting plate; 45. Pressure head; 51. Buffer spring; 52. Rotating block; 521. Storage groove; 53. Gear; 54. Top block; 55. Return spring; 56. Snap-fit component; 57. Compression spring; 58. Rack. Detailed Implementation
[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.
[0033] A strength testing device for flooring production and processing, such as Figure 1 - Figure 8 As shown, the system includes a base 1, with two sets of support frames 11 connected to the upper surface of the base 1. Electric push rods 12 are fixedly connected to both ends of the two sets of support frames 11. A positioning plate 121 is connected to the output end of the electric push rods 12. By pushing the positioning plate 121 with the electric push rods 12, the floor can be moved under the action of the positioning plate 121, aligning the center line of the floor with the center line of the pressure head 45, thus positioning the floor. Brackets are connected to both sides of the two sets of support frames 11 on the upper surface of the base 1, and cylinders 2 are installed at the top of the brackets. A moving plate 21 is connected to the output end of the cylinder 2. The lower surface of 21 is fixedly connected to a detection component for detecting the floor. The detection component includes a pressure head 45 that applies pressure to the floor. The pressure head 45 is driven to move vertically downward by the cylinder 2 in conjunction with the moving plate 21, thereby applying pressure to the floor and detecting the mechanical properties of the floor. The detection component includes a lower seat 41 and an upper seat 43. A load sensor 3 is installed at the top of the upper seat 43. The lower seat 41 and the upper seat 43 are provided with a buffer component to protect the load sensor 3. The buffer component can buffer the impact force generated when the floor breaks and protect the load sensor.
[0034] See Figure 6 It is known that the top of the upper seat 43 is fixedly connected to the movable plate 21 by a connecting rod. The lower surface of the upper seat 43 has symmetrical deep holes 431. The inner wall of the deep hole 431 is fitted with a snap-fit member 56. The top of the snap-fit member 56 is located inside the deep hole 431 and is equipped with a compression spring 57. The bottom size of the deep hole 431 is smaller than the diameter of the snap-fit member 56. Part of the snap-fit member 56 is exposed outside the deep hole 431. The elastic force of the compression spring 57 can apply downward pressure to the snap-fit member 56, which makes it easier to snap the snap-fit member 56 into the inner wall of the snap-fit groove 412.
[0035] See Figure 5 and Figure 6It is known that a snap-fit groove 412 is provided on the upper surface of the lower seat 41 at the position corresponding to the snap-fit member 56. When the snap-fit member 56 snaps into the inner wall of the snap-fit groove 412, the upper seat 43 and the lower seat 41 form a rigid connection, which facilitates the transmission of the force of the cylinder 2 to the pressure head 45 for strength testing of the floor. A top block 54 is slidably connected to the inner wall of the snap-fit groove 412. A return spring 55 connected to the lower seat 41 is fixedly connected to the bottom end of the top block 54. When the upper seat 43 and the lower seat 41 are separated, the snap-fit member 56 releases the pressure on the top block 54. At this time, under the elastic force of the return spring 55, the return spring 55 cooperates with the top block 54 to push the snap-fit member 56 out of the inner wall of the snap-fit groove 412, separating the upper seat 43 and the lower seat 41, preventing the impact force from being transmitted to the load sensor 3 on the upper seat 43, and protecting the load sensor 3. The snap-fit member 56 matches the snap-fit groove 412.
[0036] See Figure 3 - Figure 6 It is known that multiple sets of guide rods 42 are symmetrically fixedly connected to the upper surface of the lower seat 41, and the upper seat 43 is slidably connected to the outer wall of the guide rods 42. The guide rods 42 can guide the lower seat 41 so that the lower seat 41 can only move vertically. The outer walls of the multiple sets of guide rods 42 are all sleeved with buffer springs 51. The top of the buffer spring 51 is fixedly connected to the bottom of the upper seat 43. The buffer spring 51 buffers the lower seat 41 and absorbs the impact energy when the floor breaks.
[0037] See Figure 5 - Figure 8 It can be seen that the upper surface of the lower seat 41 is provided with multiple sets of rotating blocks 52, the top of the rotating block 52 is provided with a storage groove 521, the bottom end of the buffer spring 51 extends to the inner wall of the storage groove 521, and the surface of the rotating block 52 is provided with an opening. When the upper seat 43 and the lower seat 41 are in contact, the buffer spring 51 can be compressed into the opening.
[0038] A rack 58 is fixedly connected to the top of the mounting plate 44. A cavity is opened at the bottom of the lower seat 41 between the guide grooves 411. A gear 53 is fixedly sleeved on the outer wall of the rotating block 52. The rack 58 meshes with the gear 53. When switching the test method, the mounting plate 44 is moved. When the mounting plate 44 moves, the gear 53 rotates under the transmission of the rack 58. When the gear 53 rotates, it drives the rotating block 52 to rotate synchronously. Since the opening of the storage groove 521 is inclined and the storage groove 521 is spiral, the buffer spring 51 stored in the inner wall of the storage groove 521 can be unscrewed when the rotating block 52 rotates, thereby extending the length of the buffer spring 51, increasing the effective number of turns of the buffer spring 51, and thus improving the buffering effect.
[0039] See Figure 8It is known that a guide groove 411 is provided at the bottom of the lower seat 41, and an installation plate 44 is slidably connected to the inner wall of the guide groove 411. A pressure head 45 is provided on the lower surface of the installation plate 44, and a guide block matching the guide groove 411 is fixedly connected to the upper surface of the installation plate 44 to facilitate the parallel movement of the installation plate 44. Baffles are connected to both ends of the guide block. When a set of baffles contacts the lower seat 41, the pressure head 45 is located between the two sets of support frames 11. A pull rod is symmetrically fixedly connected to one side surface of the installation plate 44. The installation plate 44 can be moved by pulling the pull rod. By switching the number of pressure heads 45, different test methods can be used to test the strength of the floor, thereby improving the comprehensiveness of the test results.
[0040] A strength testing method for flooring production and processing includes the following steps:
[0041] S1: Floor positioning: Place the floor to be tested on the support frame 11, and apply lateral positioning force to both ends of the floor by using the electric push rod 12 in conjunction with the positioning plate 121. Adjust the position of the floor so that the center line of the pressure head 45 is aligned with the center line of the floor, ensuring that the floor is in the center of the support frame 11.
[0042] S2: Floor inspection: Cylinder 2 drives the upper seat 43 and lower seat 41 to move down synchronously. After the pressure head 45 contacts the floor, it continues to descend. The upper seat 43 locking piece 56 engages with the lower seat 41 locking groove 412. The return spring 55 is compressed. The upper seat 43 and lower seat 41 form a rigid connection to stably transmit the load. The four-point bending test method is used to complete the floor bending strength test.
[0043] S3: Impact buffering and protection: When the floor breaks, the lower seat 41 will move downward instantaneously, the snap fastener 56 will disengage from the snap fastener 412, and the buffer spring 51 on the outer wall of the guide rod 42 will absorb the impact energy, convert the downward kinetic energy into elastic potential energy, attenuate the impact load, avoid rigid impact, and achieve protection for the load sensor 3.
[0044] S4: Mode switching: After the four-point bending test is completed, the pressure head 45 is reset. Through the cooperation of the guide block and the guide groove 411, the mounting plate 44 is driven to move horizontally under the action of the pull rod. The mode switches to a single pressure head 45 and positions it. The three-point bending test method is used to test the same specification of flooring. By comparing the two test results, the comprehensiveness and accuracy of the test are improved, and the flooring strength test is completed.
[0045] S5: Adaptive adjustment: When switching to three-point bending detection, the buffer spring 51 is rotated out to increase its effective number of elastic coils by utilizing the transmission cooperation of rack 58, gear 53 and rotating block 52, thereby improving the buffer energy absorption effect and achieving adaptive protection for load sensor 3 under the two detection modes.
[0046] The working principle of this invention is as follows: When performing strength testing on the floor, the floor is first placed on the upper part of two sets of support frames 11, and two sets of electric push rods 12 are activated. The two sets of electric push rods 12, together with the positioning plate 121, apply lateral positioning force to both ends of the floor, thereby pushing the floor to move and adjusting the position of the floor so that the neutral line of the pressure head 45 is aligned with the center line of the floor. At this time, the floor is located in the middle of the two sets of support frames 11, which facilitates the provision of a precise positioning basis for subsequent floor strength testing operations, effectively improves the accuracy of the test results, and prevents the floor from shifting when placed on the support frame 11, which would affect the test results of the floor.
[0047] After the floor is positioned, cylinder 2 is activated. Cylinder 2 drives the upper seat 43 and lower seat 41 to move downward synchronously through the moving plate 21. At this time, the two sets of pressure heads 45 on the mounting plate 44 also move synchronously. When the two sets of pressure heads 45 contact the surface of the floor to be tested, the upper seat 43 continues to move downward. When the upper seat 43 and lower seat 41 abut against each other, the snap-fit piece 56 on the upper seat 43 just snaps into the inner wall of the snap-fit groove 412 on the lower seat 41. The snap-fit piece 56 abuts against the top block 54, and the return spring 55 is compressed. At this time, the upper seat 43 and lower seat 41 form a rigid connection, thereby ensuring the stable transmission of load and transmitting the force to the pressure head 45. At this time, the pressure head 45 continues to move downward under the action of cylinder 2. The four-point bending detection method is used to test the floor. By continuously applying pressure to the floor through the pressure head 45, the bending strength of the floor can be tested by the load sensor 3.
[0048] As the pressure head 45 continues to move downwards, when the ground plate reaches its stress limit and breaks, the lower seat 41 experiences a momentary downward displacement due to the inertia of the pressure head 45. At this moment, the upper seat 43 separates from the lower seat 41. Under the elastic recovery action of the return spring 55, the top block 54 resets, thus pushing out of the locking groove 412 and applying a pushing force to the locking member 56, causing the locking member 56 to disengage from the locking groove 412. At this time, the upper seat 43 separates from the lower seat 41, and the buffer spring set on the outer wall of the guide rod 42... Spring 51 buffers the lower seat 41 and absorbs the impact energy when the floor breaks. When the upper seat 43 separates from the lower seat 41, the lower seat 41 falls downward under the action of the pressure head 45. At this time, the buffer spring 51 converts the kinetic energy of the lower seat 41 falling into its own elastic potential energy, thereby attenuating the impact load and preventing the upper seat 43 and the lower seat 41 from having a rigid impact. This prevents the reverse impact load from being transmitted to the load sensor 3, thus effectively protecting the load sensor 3 and reducing the possibility of the load sensor being damaged by impact to a certain extent.
[0049] After the two sets of pressure heads 45 have completed their tests, the cylinder 2 drives the pressure heads 45 to reset. Then, floorboards of the same size are placed on the two sets of support frames 11. Guide blocks are fixedly connected to the upper surface of the mounting plate 44. With the cooperation of the guide blocks and the guide groove 411, two sets of tie rods are symmetrically fixedly connected to one side surface of the mounting plate 44. The tie rods drive the mounting plate 44 to move in parallel, moving the single set of pressure heads 45 on the mounting plate 44 to the top of the floorboard. At this time, the pressure head 45 is just located in the middle of the two sets of support frames 11. Then, the floorboard is positioned by the cooperation of the two sets of electric push rods 12 and the positioning plate 121. The floorboard can be tested by the three-point test method. By comparing the two test results, the comprehensiveness and accuracy of the floorboard strength test can be improved.
[0050] When using a single pressure head 45 for testing, since the load of the three-point bending test method is greater than that of the four-point bending test method, during the movement of the mounting plate 44, the rack 58 drives the meshing gear 53 to rotate. When the gear 53 rotates, it synchronously drives the rotating block 52 to rotate. When the rotating block 52 rotates, it can gradually unscrew the buffer spring 51 inside, increasing the effective elastic coil of the buffer spring 51, thereby improving the buffering energy absorption effect of the buffer spring 51. This achieves the adaptability protection of the load sensor 3 under the two testing methods, ensuring the safety and stability of the testing process. The contents not described in detail in this description belong to the prior art known to those skilled in the art.
[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A strength testing device for flooring production and processing, comprising a base (1), characterized in that: Two sets of support frames (11) are connected to the upper surface of the base (1). Electric push rods (12) are fixedly connected to both ends of the two sets of support frames (11). A positioning plate (121) is connected to the output end of the electric push rod (12). A bracket is connected to both sides of the two sets of support frames (11) on the upper surface of the base (1). A cylinder (2) is installed at the top of the bracket. A moving plate (21) is connected to the output end of the cylinder (2). A detection component for detecting the floor is fixedly connected to the lower surface of the moving plate (21). The detection component includes a pressure head (45) that applies pressure to the floor. The detection component includes a lower seat (41) and an upper seat (43). A load sensor (3) is installed at the top of the upper seat (43). A buffer component for protecting the load sensor (3) is provided on the lower seat (41) and the upper seat (43).
2. The strength testing device for flooring production and processing according to claim 1, characterized in that: The top of the upper seat (43) is fixedly connected to the moving plate (21) by a connecting rod. The lower surface of the upper seat (43) is provided with mutually symmetrical deep holes (431). The inner wall of the deep hole (431) is embedded with a snap fastener (56). The top of the snap fastener (56) is equipped with a compression spring (57) inside the deep hole (431).
3. The strength testing device for flooring production and processing according to claim 1, characterized in that: A snap-fit groove (412) is provided on the upper surface of the lower seat (41) at the position corresponding to the snap-fit member (56). A top block (54) is slidably connected to the inner wall of the snap-fit groove (412). A reset spring (55) connected to the lower seat (41) is fixedly connected to the bottom end of the top block (54). The snap-fit member (56) matches the snap-fit groove (412).
4. The strength testing device for flooring production and processing according to claim 1, characterized in that: The lower seat (41) has multiple sets of guide rods (42) symmetrically fixedly connected to its upper surface. The upper seat (43) is slidably connected to the outer wall of the guide rods (42). Each set of guide rods (42) has a buffer spring (51) sleeved on its outer wall. The top of the buffer spring (51) is fixedly connected to the bottom of the upper seat (43).
5. A strength testing device for flooring production and processing according to claim 4, characterized in that: The upper surface of the lower seat (41) is provided with multiple sets of rotating blocks (52), the top of the rotating block (52) is provided with a storage groove (521), and the bottom end of the buffer spring (51) extends to the inner wall of the storage groove (521).
6. The strength testing device for flooring production and processing according to claim 5, characterized in that: The bottom of the lower seat (41) is provided with a guide groove (411), and an installation plate (44) is slidably connected to the inner wall of the guide groove (411). A pressure head (45) is provided on the lower surface of the installation plate (44).
7. A strength testing device for flooring production and processing according to claim 6, characterized in that: The mounting plate (44) is fixedly connected to the top of the rack (58), and the bottom of the lower seat (41) is provided with a cavity between the guide groove (411). The outer wall of the rotating block (52) is fixedly sleeved with a gear (53), and the rack (58) meshes with the gear (53).
8. A strength testing method for flooring production and processing, applicable to the strength testing device for flooring production and processing as described in any one of claims 1-7, the method comprising the following steps: S1: Floor positioning: Place the floor to be tested on the support frame (11), and apply lateral positioning force to both ends of the floor by using the electric push rod (12) in conjunction with the positioning plate (121) to adjust the position of the floor so that the center line of the pressure head (45) is aligned with the center line of the floor, ensuring that the floor is in the middle of the support frame (11); S2: Floor inspection: The cylinder (2) drives the upper seat (43) and the lower seat (41) to move down synchronously. After the pressure head (45) contacts the floor, it continues to descend. The upper seat (43) snap-fit piece (56) engages with the lower seat (41) snap-fit groove (412). The return spring (55) is compressed. The upper seat (43) and the lower seat (41) form a rigid connection to stably transfer the load. The four-point bending test method is used to complete the floor bending strength test. S3: Impact buffering and protection: When the floor breaks, the lower seat (41) will move downward instantaneously, the snap fastener (56) will disengage from the snap fastener (412), and the buffer spring (51) on the outer wall of the guide rod (42) will absorb the impact energy, convert the downward kinetic energy into elastic potential energy, attenuate the impact load, avoid rigid impact, and achieve protection of the load sensor (3). S4: Mode switching: After the four-point bending test is completed, the pressure head (45) is reset. Through the cooperation of the guide block and the guide groove, the mounting plate (44) is driven to move under the pull rod. Switch to a single pressure head (45) and position it. Use the three-point bending test method to test the same specification floor. By comparing the two test results, the comprehensiveness and accuracy of the test are improved, and the floor strength test is completed. S5: Adaptive adjustment: When switching to three-point bending detection, the buffer spring (51) is rotated out by the transmission cooperation of rack (58), gear (53) and rotating block (52) to increase its effective number of elastic coils, improve the buffer energy absorption effect, and realize the adaptability protection of load sensor (3) under the two detection modes.