Building template strength testing device

Through the design of a movable base frame and lifting load frame, combined with a power unit and acoustic emission sensor, the flexible movement and automated continuous testing of the building formwork strength testing equipment are achieved, solving the problems of poor equipment mobility and non-destructive testing, and improving testing efficiency and safety.

CN120685440APending Publication Date: 2025-09-23JIANGSU JIQIANG WOOD IND CO LTD
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Patent Information

Application Number
CN202510997511.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-19
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

Existing building formwork strength testing equipment has poor mobility, limited on-site adaptability, low degree of automation, lacks non-destructive testing methods, and is unable to identify early internal damage.

Method used

It adopts a movable base frame design, combined with a liftable load frame and power unit to achieve automatic clamping and continuous detection of the template. It is equipped with an acoustic emission sensor to capture elastic wave signals in real time for non-destructive testing.

Benefits of technology

It improves the flexibility and applicability of the equipment, enhances detection efficiency and safety, and can identify early damage to the template in real time, ensuring the accuracy and reliability of detection.

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Abstract

The invention relates to the field of buildings, in particular to a building template strength testing device which comprises a movable bottom frame, a liftable bearing frame is arranged above the bottom frame, a power unit for driving a template to move horizontally is arranged on the bearing frame, and a clamp unit for fixing the template is arranged on the bearing frame. A portal frame capable of horizontally moving is fixedly arranged at the top end of the bearing frame, and a detection module for detecting the strength of a template is arranged on the bearing frame; according to the building template strength testing device disclosed by the invention, the whole device adopts a movable design and is combined with the liftable bearing frame, so that the flexible movement and height adjustment of the whole device are realized, the applicability and maneuverability of the device are improved, a continuous detection process is realized, the detection rhythm and the working efficiency are improved, and the labor intensity of workers is reduced. And elastic wave signals generated by crack propagation in the template can be captured in real time in the loading process, so that nondestructive testing of early damage of the template is realized, and the safety is improved.
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Description

Technical Field

[0001] The invention relates to the field of construction, in particular to a construction template strength testing device. Background Art

[0002] As a key supporting structure in concrete pouring, the strength and durability of building formwork are directly related to project quality and construction safety. With the rapid development of the construction industry, higher requirements are being placed on the quality control of building formwork. This is especially true at the construction site, where formwork must undergo rapid and accurate strength testing upon arrival to ensure it meets the construction load requirements.

[0003] The patent document with application number 202310792356.2 discloses a building material strength testing device and testing method, including a testing platform for carrying a piece to be tested and a pressure piece arranged on the testing platform for applying pressure to the piece to be tested; the testing platform is provided with a fixed frame, and the fixed frame is provided with a moving component and a sliding component, the moving component is used to drive the pressure piece to move along the length direction of the testing platform, and the sliding component is used to drive the pressure piece to move along the width direction of the testing platform; the testing platform is provided with a clamping component for clamping the piece to be tested; this application has the effect of improving the work efficiency of strength testing of the piece to be tested.

[0004] Patent document No. 201920589370.1 discloses a novel device for testing the compressive strength of building formwork, comprising a control box, a cabinet door being movably mounted on the front outer surface of the control box via hinges, a workbench welded to the top outer surface of the control box, and a control console welded to the top outer surface of the workbench near one side. The novel device for testing the compressive strength of building formwork described in this utility model, by installing support platforms on both sides of a fixed base column, can place the formwork to be tested on the support platforms, and then press down with a pressure column to detect the hardness of the formwork under bending force, thereby improving the functionality of existing compressive strength devices. When the guide column is deformed and bent, the copper wire contacts the inner wall of the guide column, and the battery energizes the buzzer, which emits a sound to alert. This allows for more timely detection of whether the guide column is bent, avoiding the continued use of a bent guide column, which could pose certain risks.

[0005] However, there are still the following problems in practical applications, specifically:

[0006] 1. Poor equipment mobility and limited on-site adaptability: Both of the aforementioned patents utilize fixed or semi-fixed structural designs, lacking mobility and making it difficult to flexibly adapt to different construction site environments. However, the present invention utilizes a wheeled chassis and an electric scissor-type telescopic frame, enabling convenient movement and height adjustment of the entire machine, significantly enhancing its flexibility and applicability on-site.

[0007] 2. Low degree of automation and low detection efficiency: Neither of the above two patents involves the functions of automatic template transportation, clamping or continuous detection. Its operation process relies on manual clamping and manual adjustment, resulting in long repeated clamping time and slow detection rhythm. In contrast, the present invention realizes automatic clamping and continuous detection process of the template by setting a power unit to drive the horizontal movement of the template, combining the electric push rod and the motor control system, and significantly improves the detection efficiency.

[0008] 3. Lack of nondestructive testing methods, unable to identify early internal damage: The two aforementioned patents primarily rely on displacement and pressure feedback during the loading process to determine whether the template strength meets the requirements, ignoring potential microcracks or material fatigue within the template. This invention, however, innovatively incorporates an acoustic emission sensor module to capture elastic wave signals generated by crack propagation within the template in real time during the loading process, enabling nondestructive detection of early template damage and further improving the safety and reliability of detection.

[0009] Therefore, how to overcome the above-mentioned technical problems and defects becomes a key issue that needs to be solved. Summary of the Invention

[0010] The purpose of the invention is to overcome the defects described in the background technology, thereby realizing a building formwork strength testing device. The device adopts a movable design as a whole, combined with a liftable load-bearing frame, to achieve flexible movement and height adjustment of the whole machine. It is suitable for a variety of construction site environments, greatly improving the applicability and maneuverability of the equipment, and realizing a continuous detection process, reducing repeated clamping time, improving detection rhythm and work efficiency, and being able to capture the elastic wave signal generated by the expansion of cracks inside the formwork in real time during the loading process, realizing non-destructive detection of early damage to the formwork, and improving safety.

[0011] To achieve the above-mentioned purpose of the invention, the technical solution of the present invention is: a building formwork strength testing device, comprising a movable base frame, a liftable load-bearing frame is arranged above the base frame, a power unit for driving the formwork to move horizontally is arranged on the load-bearing frame, a clamp unit for fixing the formwork is arranged on the load-bearing frame, a horizontally movable gantry is fixedly arranged on the top of the load-bearing frame, and a detection module for performing strength detection on the formwork is arranged on the load-bearing frame.

[0012] In the above-mentioned building formwork strength testing device, the base frame is a rectangular structure, wheels are provided at the four corners of the base frame, and an electric scissor-type telescopic frame is fixedly provided at the top of the base frame.

[0013] In the above-mentioned building formwork strength testing device, the supporting frame includes two fixing rods arranged horizontally and symmetrically, and the two fixing rods are both fixedly arranged on the top end of the electric scissor-type telescopic frame.

[0014] The support frame further includes a plurality of horizontally arranged crossbeams, and both ends of the crossbeams are fixedly connected to corresponding fixing rods respectively.

[0015] In the above-mentioned building formwork strength testing device, the power unit includes grooves opened on two fixed rods along their length directions, and driving wheels and passive wheels are rotatably arranged at both ends of the grooves. The driving wheels and passive wheels are arranged opposite to each other and are covered with a conveyor belt.

[0016] A driving rod is horizontally arranged on the side of the crossbeam, and both ends of the driving rod are rotatably arranged with corresponding fixed rods. Both ends of the driving rod are fixedly connected to corresponding driving wheels. A first motor with a reducer is fixedly arranged on the crossbeam, and pulleys are coaxially fixed on the output end of the reducer and the driving rod, and the two pulleys are connected by a sleeved belt.

[0017] In the above-mentioned building formwork strength testing device, a cross bar is fixedly arranged horizontally between the two fixing rods, and a position sensor for detecting the position of the formwork is fixedly arranged on the cross bar.

[0018] In the above-mentioned building formwork strength testing device, the clamp unit includes fixed plates horizontally fixedly arranged on the outer sides of both ends of the fixed rod, and a first electric push rod is horizontally fixedly arranged on the fixed plate. The first electric push rod is horizontally perpendicular to the fixed rod, and a splint is fixedly arranged at the telescopic end of the first electric push rod.

[0019] A clamping portion is fixedly provided on the upper portion of the clamping plate. The clamping portion is an L-shaped structure and is higher than the top end of the fixing rod. A first guide rod is fixedly provided horizontally and vertically on the outer side of the fixing rod. The first guide rod passes through the clamping plate.

[0020] In the above-mentioned building formwork strength testing device, the gantry is in a U-shaped structure with an opening facing downward, and both side arms thereof are located outside the corresponding fixing rods.

[0021] A baffle is fixedly provided on the outside of the fixed rod, and the baffle is U-shaped. The two arms of the gantry are respectively located between the corresponding baffle and the fixed rod. A second guide rod is horizontally fixed between the two arms of the baffle, and the second guide rod passes through the corresponding gantry.

[0022] A lead screw is provided on the outer side of the fixed rod for horizontal rotation. The lead screw passes through the corresponding gantry and is threadedly connected to the gantry. A second motor is fixedly provided on the outer side of the fixed rod for driving the lead screw to rotate.

[0023] In the above-mentioned building formwork strength testing device, the detection module includes a pressurizing unit, and the pressurizing unit includes a third electric push rod vertically fixed at the upper middle position of the gantry. The telescopic end of the third electric push rod is arranged downward and a pressurizing plate is fixed at its end. The pressurizing plate is arranged horizontally and its length direction is perpendicular to the fixed rod.

[0024] A plurality of fourth electric push rods are fixedly arranged horizontally and vertically at the bottom end of the pressure plate along its length direction. The telescopic ends of the fourth electric push rods are arranged downward and an extrusion block is fixedly arranged at the ends thereof.

[0025] In the above-mentioned building formwork strength testing device, a connecting plate is fixedly provided on the side of the extrusion block, a cam that can abut against the formwork is rotatably provided on the side of the connecting plate, and a first gear is coaxially fixedly provided on the side of the cam.

[0026] A mounting plate is fixedly provided on the side of the pressure plate, a third motor is fixedly provided on the mounting plate, and a second gear meshing with the first gear is fixedly provided on the output end of the third motor.

[0027] In the above-mentioned building formwork strength testing device, the detection module includes a detection unit, which includes a fifth electric push rod vertically fixed at both ends of the beam, and a top plate horizontally arranged above the beam that can abut against the bottom end of the formwork, and the two ends of the top plate are respectively fixed at the corresponding telescopic ends of the fifth electric push rod.

[0028] Detection plates are fixedly installed on both sides of the bottom end of the top plate, the length direction of the detection plates is perpendicular to the length direction of the top plate, and a plurality of springs are vertically arranged at the top end of the detection plate along its length direction, and an acoustic emission sensor that can abut against the bottom end of the template is fixedly installed at the top end of the spring.

[0029] Compared with the prior art, the building template strength testing device of the present invention has at least the following beneficial effects:

[0030] 1. The building formwork strength testing device of the present invention adopts a movable design as a whole, combined with a liftable load-bearing frame, which not only improves the stability of the equipment, but also realizes the flexible movement and height adjustment of the whole machine. It is suitable for a variety of construction site environments, greatly improving the applicability and maneuverability of the equipment. It can capture the elastic wave signal generated by the expansion of cracks inside the formwork in real time during the loading process, realize non-destructive detection of early damage to the formwork, and improve safety.

[0031] 2. The building formwork strength testing device of the present invention is provided with a clamp unit for limiting the formwork, which can realize automatic clamping, positioning, loading and testing operations of the formwork, reduce manual intervention, improve detection efficiency and consistency, lower the operating threshold, and enable non-professionals to quickly get started and use it. It ensures that the formwork is evenly stressed and accurately positioned during the clamping process, and can automatically adjust the clamping position according to formworks of different sizes. It has strong adaptability and avoids deformation or damage of the formwork caused by improper clamping.

[0032] 3. The building formwork strength testing device of the present invention has a gantry structure and a pressurizing unit composed of a third electric push rod and a fourth electric push rod, which can achieve precise pressure in the vertical direction; at the same time, the formwork is locally vibrated and loaded through a cam mechanism, which is closer to the complex stress distribution that the formwork is subjected to during the construction process, thereby enhancing the authenticity and reliability of the test. In conjunction with the configured acoustic emission sensor, it is installed under the top plate and maintains good contact with the bottom of the formwork through a spring. During the pressurization process, the elastic wave signal generated by the expansion of cracks inside the formwork is captured in real time, thereby achieving non-destructive detection of early damage to the formwork and improving safety.

[0033] 4. In the building formwork strength testing device of the present invention, the power unit on the carrier is controlled by belt transmission and reducer to drive the formwork to move horizontally on a fixed track, thereby realizing a continuous testing process, reducing repeated clamping time, and improving testing rhythm and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the construction template strength testing device of the present invention in use;

[0035] Figure 2 It is a schematic diagram of the overall structure of the building template strength testing device of the present invention;

[0036] Figure 3 2. It is a schematic structural diagram of a bearing frame of a building formwork strength testing device according to the present invention;

[0037] Figure 4 It is a schematic structural diagram of a power unit of a building template strength testing device of the present invention;

[0038] Figure 5 It is a schematic structural diagram of a detection unit of a building template strength testing device of the present invention;

[0039] Figure 6 2. It is a schematic diagram of the top view of the pressurizing unit of the building template strength testing device of the present invention;

[0040] Figure 7 Schematic diagram of the position of the extrusion block of the building template strength testing device of the present invention;

[0041] Figure 8 It is a schematic diagram of the position of the second gear of the building template strength testing device of the present invention.

[0042] In the figure: 1. chassis;

[0043] 2. Carrying frame; 21. Fixing rod; 22. Crossbeam;

[0044] 3. Power unit; 31. Groove; 32. Driving wheel; 33. Driven wheel; 34. Conveyor belt; 35. Driving rod; 36. First motor; 37. Pulley; 38. Belt; 39. Crossbar; 40. Position sensor;

[0045] 4. Clamp unit; 41. Fixing plate; 42. First electric push rod; 43. Clamping plate; 44. Clamping part; 45. First guide rod;

[0046] 5. Gantry;

[0047] 6. Detection module; 61. Pressurizing unit; 611. Third electric push rod; 612. Pressurizing plate; 613. Fourth electric push rod; 614. Extrusion block; 615. Connecting plate; 616. Cam; 617. First gear; 618. Mounting plate; 619. Third motor; 620. Second gear;

[0048] 62. Detection unit; 621. Fifth electric push rod; 622. Top plate; 623. Detection plate; 624. Spring; 625. Acoustic emission sensor;

[0049] 7. Wheel; 8. Electric scissor-type telescopic frame; 9. Baffle; 10. Second guide rod; 11. Lead screw; 12. Second motor. DETAILED DESCRIPTION

[0050] The construction formwork strength testing device of the present invention will be described in more detail below with reference to the accompanying drawings and through specific implementations.

[0051] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0052] See also Figures 1-8The building formwork strength testing device of this embodiment adopts a movable design as a whole, combined with a liftable load-bearing frame 2, which realizes the flexible movement and height adjustment of the whole machine, and is suitable for a variety of construction site environments, greatly improving the applicability and maneuverability of the equipment, and realizing a continuous detection process, reducing repeated clamping time, improving the detection rhythm and work efficiency, and being able to capture the elastic wave signal generated by the expansion of cracks inside the formwork in real time during the loading process, realizing non-destructive detection of early damage to the formwork, and improving safety. In this embodiment, it mainly includes a movable base frame 1, which is a rectangular structure, and wheels 7 are provided at the four corners of the base frame 1. An electric scissor-type telescopic frame 8 is fixed to the top of the base frame 1. The electric scissor-type telescopic frame 8 is a mature existing technology, and its working principle is not the inventive point of the present invention, so it will not be described in detail here. A liftable carrier frame 2 is provided above the base frame 1. The carrier frame 2 includes two horizontally symmetrically arranged fixed rods 21. Both of the fixed rods 21 are fixedly arranged on the top of the electric scissor-type telescopic frame 8. The carrier frame 2 also includes a plurality of horizontally arranged beams 22. The two ends of the beams 22 are fixedly connected to the corresponding fixed rods 21.

[0053] The device is moved to a suitable position by the wheels 7, which is convenient for testing the mold at the construction site, and the electric scissor-type telescopic frame 8 is controlled to work to adjust the template loading height, which is convenient for the template loading operation.

[0054] To achieve automatic feeding of templates, see Figure 3-Figure 5 The carrier frame 2 is provided with a power unit 3 for driving the template to move horizontally. The power unit 3 includes a groove 31 provided along the length of two fixed rods 21. A driving wheel 32 and a passive wheel 33 are rotatably provided at both ends of the groove 31. The driving wheel 32 and the passive wheel 33 are arranged opposite to each other and are sleeved with a conveyor belt 34. A driving rod 35 is horizontally provided on the side of the crossbeam 22. Both ends of the driving rod 35 are rotatably provided with the corresponding fixed rod 21. Both ends of the driving rod 35 are fixedly connected to the corresponding driving wheel 32. A first motor 36 with a reducer is fixedly provided on the crossbeam 22. A pulley 37 is coaxially fixedly provided on the output end of the reducer and the driving rod 35. The two pulleys 37 are connected by a sleeved belt 38. A crossbar 39 is horizontally fixed between the two fixed rods 21. A position sensor 40 for detecting the position of the template is fixedly provided on the crossbar 39.

[0055] The first motor 36 is controlled to rotate the drive rod 35 via the pulley 37 and belt 38. The drive rod 35 rotates the drive wheel 32, which in turn rotates the driven wheel 33 to operate the conveyor belt 34. At this point, the template is placed on the conveyor belt 34, achieving its movement. During this process, the position sensor 40 on the crossbar 39 detects the position of the template.

[0056] To limit the template, see Figure 3 and Figure 5 , a clamp unit 4 for fixing the template is provided on the carrier frame 2. The clamp unit 4 includes a fixing plate 41 fixedly provided horizontally on the outer sides of both ends of the fixing rod 21, and a first electric push rod 42 is fixedly provided horizontally on the fixing plate 41. The first electric push rod 42 is horizontally perpendicular to the fixing rod 21, and a splint 43 is fixedly provided on the telescopic end of the first electric push rod 42. A clamping portion 44 is fixedly provided on the upper part of the splint 43, and the clamping portion 44 is an L-shaped structure and is higher than the top end of the fixing rod 21. A first guide rod 45 is fixedly provided horizontally and vertically on the outer side of the fixing rod 21, and the first guide rod 45 passes through the splint 43. The first electric push rod 42 is controlled to work and push the splint 43 to move relatively along the first guide rod 45, thereby squeezing the template through the clamping portion 44 to achieve the limitation of the template.

[0057] To detect the template, see Figure 5-Figure 8 A horizontally movable gantry 5 is fixed to the top of the carrier frame 2. The gantry 5 is a U-shaped structure with its opening facing downward, with its two side arms positioned outside of corresponding fixed rods 21. A baffle 9 is fixed to the outside of each fixed rod 21. The two arms of the gantry 5 are positioned between the baffle 9 and the fixed rod 21. A second guide rod 10 is fixed horizontally between the two arms of the baffle 9 and extends through the corresponding gantry 5. A lead screw 11 is provided for horizontal rotation outside the corresponding fixed rod 21. The lead screw 11 extends through the corresponding gantry 5 and is threadedly connected to the gantry 5. A second motor 12 is fixed to the outside of the fixed rod 21 to drive the lead screw 11. The second motor 12 is controlled to rotate, driving the lead screw 11, thereby moving the gantry 5 along the lead screw 11 and the second guide rod 10 until the gantry 5 reaches the desired position. During this process, the baffle 9 and the second guide rod 10 provide guidance for the gantry 5.

[0058] The carrier frame 2 is provided with a detection module 6 for testing the strength of the template. The detection module 6 includes a pressurizing unit 61, and the pressurizing unit 61 includes a third electric push rod 611 vertically fixed in the upper middle position of the gantry 5, the telescopic end of the third electric push rod 611 is set downward and a pressure plate 612 is fixed at its end, and the pressure plate 612 is set horizontally and its length direction is perpendicular to the fixed rod 21. The bottom end of the pressure plate 612 is fixed horizontally and vertically along its length direction with a plurality of fourth electric push rods 613, the telescopic end of the fourth electric push rod 613 is set downward and an extrusion block 614 is fixed at its end. The third electric push rod 611 is controlled to work and drive the pressure plate 612 to rise and fall to the appropriate position. At this time, the fourth electric push rod 613 is controlled to work and drive the corresponding extrusion block 614 to extrude different positions of the template to achieve precise pressure on the template in the vertical direction.

[0059] A connecting plate 615 is fixedly provided on the side of the extrusion block 614. A cam 616 that can abut the template is rotatably provided on the side of the connecting plate 615. A first gear 617 is coaxially fixedly provided on the side of the cam 616. A mounting plate 618 is fixedly provided on the side of the pressure plate 612. A third motor 619 is fixedly provided on the mounting plate 618. A second gear 620 that meshes with the first gear 617 is fixedly provided on the output end of the third motor 619. During the process of pressurizing the template, the third motor 619 is controlled to operate, and the cam 616 is driven to rotate through the first gear 617 and the second gear 620, thereby subjecting the template to local vibration loading. This is closer to the complex stress distribution that the template will withstand during construction, enhancing the authenticity and reliability of the test.

[0060] The detection module 6 includes a detection unit 62, which includes fifth electric push rods 621 vertically fixed at both ends of the crossbeam 22. A top plate 622 is horizontally arranged above the crossbeam 22, capable of abutting the bottom end of the template. The ends of the top plate 622 are respectively fixed to the corresponding telescopic ends of the fifth electric push rods 621. When the position sensor 40 detects the position of the template, the fifth electric push rods 621 are controlled to operate, driving the top plate 622 to rise, thereby lifting the template upward and separating it from the conveyor belt 34. Detection plates 623 are fixedly installed on both sides of the bottom end of the top plate 622. The length of the detection plates 623 is perpendicular to the length of the top plate 622. The top end of the detection plates 623 is vertically arranged along its length. The top end of each spring 624 is fixedly mounted with an acoustic emission sensor 625 capable of abutting the bottom end of the template. The acoustic emission sensor 625 is a mature prior art, and its working principle is not the inventive point of the present invention, so it will not be described in detail here. When the top plate 622 lifts the template, the acoustic emission sensor 625 contacts the template under the action of the spring 624. During the pressurization process of the template, the acoustic emission sensor 625 captures the elastic wave signals generated by the expansion of cracks inside the template in real time, enabling non-destructive detection of early damage to the template and improving safety.

[0061] The present invention's construction formwork strength testing device is used as follows: First, the device is moved to a suitable position using wheels 7 to facilitate mold testing at the construction site. The electric scissor-type telescopic frame 8 is then controlled to adjust the formwork loading height, facilitating the loading operation. The first motor 36 is then controlled to rotate the drive rod 35 via pulley 37 and belt 38. The drive rod 35 rotates the drive wheel 32, which in turn cooperates with the driven wheel 33 to operate the conveyor belt 34. The formwork is then placed on the conveyor belt 34, achieving movement. During this process, the position sensor 40 on the crossbar 39 detects the position of the formwork. At this point, the fifth electric push rod 621 is controlled to raise the top plate 622, thereby lifting the formwork and disengaging it from the conveyor belt 34. The first electric push rod 42 is then controlled to push the clamping plate 43 relative to the first guide rod 45, thereby squeezing the formwork through the clamping portion 44 and limiting its position.

[0062] The second motor 12 is controlled to work and drive the lead screw 11 to rotate, thereby moving the gantry 5 along the lead screw 11 and the second guide rod 10 until the gantry 5 moves to the appropriate position. During this process, the baffle 9 cooperates with the second guide rod 10 to guide the gantry 5. The third electric push rod 611 is controlled to work and drive the pressure plate 612 to rise and fall to the appropriate position. At this time, the fourth electric push rod 613 is controlled to work and drive the corresponding extrusion block 614 to extrude different positions of the template to achieve precise pressure on the template in the vertical direction. During the process of pressurizing the template, the third motor 619 is controlled to work and drive the cam 616 to rotate through the first gear 617 and the second gear 620 to perform local vibration loading on the template, which is closer to the complex stress distribution that the template bears during construction, thereby enhancing the authenticity and reliability of the test. When the top plate 622 lifts the template, the acoustic emission sensor 625 contacts the template under the action of the spring 624. During the pressurization process of the template, the elastic wave signal generated by the expansion of cracks inside the template is captured in real time, realizing non-destructive detection of early damage to the template and improving safety.

[0063] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprising" and other similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0064] The exemplary embodiments of the present invention are described in detail above with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present invention, various variations and modifications may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention may be made without exceeding the scope of protection of the present invention.

Claims

1. A building template strength testing device, characterized by: The invention comprises a movable base frame (1), a lifting support frame (2) is arranged above the base frame (1), a power unit (3) for driving the template to move horizontally is arranged on the support frame (2), a clamp unit (4) for fixing the template is arranged on the support frame (2), a horizontally movable gantry (5) is fixedly arranged at the top end of the support frame (2), and a detection module (6) for performing strength detection on the template is arranged on the support frame (2).

2. The building formwork strength testing device according to claim 1, characterized in that: The base frame (1) is a rectangular structure, wheels (7) are provided at the four corners of the base frame (1), and an electric scissor-type telescopic frame (8) is fixedly provided at the top end of the base frame (1).

3. The building formwork strength testing device according to claim 2, characterized in that: The carrier frame (2) includes two horizontally symmetrically arranged fixing rods (21), and the two fixing rods (21) are both fixedly arranged on the top end of the electric scissor-type telescopic frame (8); The carrier frame (2) further comprises a plurality of horizontally arranged crossbeams (22), with both ends of the crossbeams (22) being fixedly connected to corresponding fixing rods (21) respectively.

4. The building formwork strength testing device according to claim 3, characterized in that: The power unit (3) comprises two grooves (31) formed on the two fixing rods (21) along the length direction thereof, a driving wheel (32) and a driven wheel (33) are rotatably provided at both ends of the groove (31), and the driving wheel (32) and the driven wheel (33) are arranged opposite to each other and are sleeved with a conveyor belt (34); A driving rod (35) is horizontally arranged on the side of the crossbeam (22), and both ends of the driving rod (35) are rotatably arranged with the corresponding fixed rod (21). Both ends of the driving rod (35) are fixedly connected to the corresponding driving wheels (32). A first motor (36) with a reducer is fixedly arranged on the crossbeam (22), and a pulley (37) is coaxially fixedly arranged on the output end of the reducer and the driving rod (35). The two pulleys (37) are connected by a sleeved belt (38).

5. The building formwork strength testing device according to claim 4, characterized in that: A cross bar (39) is fixedly arranged horizontally between the two fixed bars (21), and a position sensor (40) for detecting the position of the template is fixedly arranged on the cross bar (39).

6. The building formwork strength testing device according to claim 1, characterized in that: The clamp unit (4) comprises fixed plates (41) respectively fixedly arranged horizontally on the outer sides of both ends of the fixed rod (21); a first electric push rod (42) is fixedly arranged horizontally on the fixed plate (41); the first electric push rod (42) is horizontally perpendicular to the fixed rod (21); a clamping plate (43) is fixedly arranged at the telescopic end of the first electric push rod (42); A clamping portion (44) is fixedly provided on the upper portion of the clamping plate (43), and the clamping portion (44) is an L-shaped structure and is higher than the top end of the fixing rod (21). A first guide rod (45) is fixedly provided horizontally and vertically on the outer side of the fixing rod (21), and the first guide rod (45) passes through the clamping plate (43).

7. The building formwork strength testing device according to claim 1, characterized in that: The gantry (5) is a U-shaped structure with an opening facing downward, and both side arms thereof are located outside the corresponding fixing rods (21); A baffle (9) is fixedly provided on the outer side of each fixed rod (21), and the baffle (9) is in a U-shaped structure. The two arms of the gantry (5) are respectively located between the corresponding baffle (9) and the fixed rod (21). A second guide rod (10) is fixedly provided horizontally between the two arms of the baffle (9), and the second guide rod (10) passes through the corresponding gantry (5); a lead screw (11) is horizontally rotated on the outer side of the corresponding fixed rod (21), and the lead screw (11) passes through the corresponding gantry (5) and is threadedly connected to the gantry (5). A second motor (12) for driving the lead screw (11) to rotate is fixedly provided on the outer side of the fixed rod (21).

8. The building formwork strength testing device according to claim 3, characterized in that: The detection module (6) includes a pressurizing unit (61), and the pressurizing unit (61) includes a third electric push rod (611) vertically fixedly arranged at the upper middle position of the gantry (5), the telescopic end of the third electric push rod (611) is arranged downward and a pressurizing plate (612) is fixedly arranged at the end thereof, and the pressurizing plate (612) is arranged horizontally and its length direction is perpendicular to the fixed rod (21); A plurality of fourth electric push rods (613) are fixedly arranged horizontally and vertically at the bottom end of the pressure plate (612) along its length direction. The telescopic ends of the fourth electric push rods (613) are arranged downward and an extrusion block (614) is fixedly arranged at the ends.

9. The building formwork strength testing device according to claim 8, characterized in that: A connecting plate (615) is fixedly provided on the side of the extrusion block (614), a cam (616) capable of abutting against the template is rotatably provided on the side of the connecting plate (615), and a first gear (617) is coaxially fixedly provided on the side of the cam (616); A mounting plate (618) is fixedly provided on the side of the pressure plate (612), a third motor (619) is fixedly provided on the mounting plate (618), and a second gear (620) meshing with the first gear (617) is fixedly provided at the output end of the third motor (619).

10. The building formwork strength testing device according to claim 9, characterized in that: The detection module (6) includes a detection unit (62), the detection unit (62) includes a fifth electric push rod (621) vertically fixed at both ends of the cross beam (22), a top plate (622) that can abut against the bottom end of the template is horizontally arranged above the cross beam (22), and both ends of the top plate (622) are respectively fixedly arranged at the telescopic ends of the corresponding fifth electric push rod (621); Detection plates (623) are fixedly provided on both sides of the bottom end of the top plate (622), and the length direction of the detection plates (623) is perpendicular to the length direction of the top plate (622). A plurality of springs (624) are vertically provided at the top end of the detection plates (623) along the length direction thereof, and an acoustic emission sensor (625) that can abut against the bottom end of the template is fixedly provided at the top end of the spring (624).

Citation Information

Patent Citations

  • A building material strength testing device and testing method

    CN116793844B

  • Novel building template compressive strength detection device

    CN210037432U