A device and method for detecting impact resistance of prefabricated plate

Abstract

The present invention belongs to the technical field of impact resistance detection, and discloses a device and method for detecting the impact resistance of a prefabricated plate. The device for detecting the impact resistance of a prefabricated plate includes a base, a plurality of counterweight assemblies and a suspension control mechanism. The counterweight assembly includes a connecting frame 1 and a plurality of counterweights sequentially arranged from the outside to the inside, and each two adjacent counterweights are slidably connected. The connecting frame 1 is fixedly connected to the outermost counterweight, and any counterweight within the outermost counterweight is slidably connected to the connecting frame 1; the suspension control mechanism includes a first driving member, a fixed sleeve, a movable sleeve and a second driving member, and the movable sleeve can be detachably arranged in the fixed sleeve. The first driving member is used to drive the fixed sleeve to drive the movable sleeve to move in the vertical direction; the second driving member can be connected to the connecting frame 1 to drive the inner counterweight to extend in the vertical direction relative to the outermost counterweight, thereby expanding the adaptability of the device and improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of impact resistance detection, and in particular to a device and method for detecting the impact resistance of a prefabricated plate. Background Art

[0002] Precast panels are a common type of concrete prefabricated parts, which are widely used in the construction field and effectively improve the efficiency and quality of construction. In actual use, the impact force borne by precast panels is often unpredictable and unavoidable, so the impact resistance of precast panels is crucial to the safety and stability of building structures.

[0003] When the existing impact resistance detection device detects the impact of the contact area on the impact resistance of the prefabricated board, the impact object is composed of multiple impact blocks, but each impact block needs to be moved manually, and the adjustment process is cumbersome, which reduces the detection efficiency. In addition, the existing impact resistance detection device cannot simultaneously detect the impact of the two factors of weight and contact area on the impact resistance of the prefabricated board, and cannot adapt to the problem of conversion of multiple test conditions.

[0004] Therefore, there is an urgent need for a device and method for detecting the impact resistance of prefabricated panels to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a prefabricated board impact resistance testing device and method, which are simple to operate, can improve the efficiency of testing, detect the influence of various factors on the impact resistance of prefabricated boards, expand the adaptability of the device, and improve the accuracy of the test results.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] On the one hand, a device for detecting the impact resistance of a prefabricated plate is provided, comprising:

[0008] A base, on which a testing platform is arranged, and the testing platform is used to support the prefabricated plate;

[0009] A plurality of counterweight assemblies, each of which has a plurality of counterweight weights, each of which is movably arranged on the base, each of which comprises a connecting frame 1 and a plurality of counterweight pieces which are sequentially sleeved from the outside to the inside, each two adjacent counterweight pieces are slidably connected in the vertical direction, the connecting frame 1 is located in the innermost counterweight piece and is fixedly connected to the outermost counterweight piece, and any counterweight piece in the outermost counterweight piece is slidably connected to the connecting frame 1 in the vertical direction;

[0010] A hovering control mechanism is movably arranged on the base, and the hovering control mechanism includes a first driving member, a fixed sleeve, a movable sleeve and a second driving member. The first driving member is suspended above the detection platform, and the output end of the first driving member is connected to the fixed sleeve for driving the fixed sleeve to move in the vertical direction; an adsorption member is arranged in the fixed sleeve, and the movable sleeve is detachably arranged in the fixed sleeve in the vertical direction through the adsorption member; the second driving member is arranged in the movable sleeve, and the output end of the second driving member can be selectively connected to a connecting frame 1 of any counterweight assembly, and the second driving member is configured to drive at least one inner layer of counterweight to extend in the vertical direction relative to the outermost layer of counterweight through the connecting frame 1.

[0011] Optionally, the prefabricated board impact resistance testing device also includes a mounting frame movably arranged on the base, the mounting frame is provided with a plurality of mounting slots, a plurality of counterweight assemblies are correspondingly and detachably arranged in the plurality of mounting slots, and the first driving member can drive the movable sleeve through the fixed sleeve and the second driving member to drive the counterweight assembly to separate from the corresponding mounting slot.

[0012] Optionally, the output end of the second driving member is provided with a first pair of plug-in parts, the connecting frame 1 is provided with a connecting member extending in a vertical direction, and the end of the connecting member away from the connecting frame 1 is provided with a second pair of plug-in parts, and the first pair of plug-in parts can be plugged with the second pair of plug-in parts;

[0013] A cover plate is provided on the top of the innermost counterweight, and a rotating hole is provided on the cover plate. The connecting part includes a first threaded sleeve and a third screw rod that are threadedly matched. The first threaded sleeve is fixedly connected to a connecting frame. The second pair of plug-in parts includes an adsorption part 2 and a slot. The slot is provided at one end of the third screw rod extending out of the first threaded sleeve. The adsorption part 2 is ring-arranged outside the slot and rotatably matched with the rotating hole. The first pair of plug-in parts can be inserted into the slot and fixed to the slot through the adsorption part 2.

[0014] Optionally, a second slide groove is provided on each counterweight piece within the outermost layer of counterweight pieces, and the connecting frame includes a connecting seat and a connecting arm arranged on the connecting seat, the connecting piece is fixed to the connecting seat, and the connecting arm is sequentially passed through the second slide groove on each counterweight piece within the outermost layer of counterweight pieces, and slidably cooperates with the corresponding second slide groove.

[0015] Optionally, each counterweight is provided with a third slide groove extending in the vertical direction, a third slider is slidably provided in the third slide groove, and the third slider of the outer counterweight of two adjacent counterweights is fixedly connected to the outer side wall of the inner counterweight;

[0016] A first elastic member is provided on the sliding path of the third slider in the third slide groove, and the third slider can slide in the third slide groove under the elastic force of the first elastic member so that the bottom surface of the inner layer of the two adjacent counterweights is flush with the bottom surface of the outer layer of the counterweight.

[0017] Optionally, a puncture piece that can extend out of the innermost counterweight piece in a vertical direction is provided in the innermost counterweight piece, and a connecting frame 2 is provided on the puncture piece, and an end of the connecting frame 2 away from the puncture piece is fixedly connected to a third slider on the innermost counterweight piece, and a first tooth plate is provided on the third slider, and a gear meshing with the first tooth plate is provided on the inner wall of the innermost counterweight piece; a connecting frame 3 is provided on the connecting frame 1, and a second tooth plate is provided at an end of the connecting frame 3 away from the connecting frame 1, and the second driving member can drive the connecting frame 1 to move in the vertical direction until the second tooth plate meshes with the gear, and drive the connecting frame 2 through the transmission action of the second tooth plate, the gear and the first tooth plate to drive the puncture piece to extend out of the innermost counterweight piece.

[0018] Optionally, a bottom plate is provided at the bottom of the innermost counterweight, and the bottom plate includes a plurality of splicing plates slidably connected to the innermost counterweight, and each splicing plate has a first position and a second position. In the first position, the plurality of splicing plates are spliced ​​together to form the bottom plate; when the piercing member extends out of the innermost counterweight, the plurality of splicing plates can slide from the first position to the second position under the push of the piercing member;

[0019] Each splicing plate is provided with a fourth sliding groove extending along its sliding direction, and a fourth slider is slidably arranged in the fourth sliding groove, and the fourth slider is fixedly connected to the innermost counterweight member; a second elastic member is arranged on the sliding path of the fourth slider in the fourth sliding groove, and the fourth slider can slide in the fourth sliding groove under the elastic force of the second elastic member, so that the corresponding splicing plate slides from the second position to the first position.

[0020] Optionally, the hovering control mechanism also includes a fixed bracket, a first movable bracket and a second movable bracket, the fixed bracket is fixed to the base, the first movable bracket is slidably arranged on the fixed bracket along the second direction, the second movable bracket is slidably arranged on the first movable bracket along the first direction, the first driving member is fixedly connected to the second movable bracket, and a plurality of counterweight assemblies are movably arranged on the second movable bracket along the first direction, and the first direction and the second direction are arranged at an angle.

[0021] Optionally, the prefabricated plate impact resistance testing device further includes an angle adjustment component for adjusting the inclination angle of the testing platform, and the angle adjustment component includes:

[0022] A movable shaft extends along a first direction, and the movable shaft is movably disposed on the base along a second direction;

[0023] A rotating member, one end of the rotating member is rotatably connected to the movable shaft, and the other end of the rotating member is rotatably connected to the first side of the detection platform, the second side of the detection platform is rotatably connected to the base, and the first side and the second side are two opposite sides of the detection platform;

[0024] The third driving member, the output end of which is connected to the movable shaft, is used to drive the movable shaft to move along the second direction, so that the movable shaft drives the rotating member to drive the detection platform to rotate relative to the base, and the first direction and the second direction are set at an angle.

[0025] On the other hand, a method for detecting the impact resistance of a prefabricated plate is provided. The method for detecting the impact resistance of a prefabricated plate adopts the above-mentioned prefabricated plate impact resistance detection device. The method comprises the following steps:

[0026] Place the prefabricated panels on the testing table;

[0027] Select a counterweight assembly with appropriate counterweight weight and an appropriate impact-resistant contact area according to the impact-resistant test requirements of the prefabricated panels;

[0028] Controlling the selected counterweight assembly to move below the second driving member;

[0029] The first driving member drives the fixed sleeve to drive the movable sleeve and the second driving member to move in the vertical direction until the output end of the second driving member is connected to the connecting frame 1 of the selected counterweight assembly;

[0030] According to the selected anti-impact contact area, the second driving member is controlled to drive the inner layer counterweight member corresponding to the contact area to extend in the vertical direction relative to the outermost layer counterweight member through the connecting frame;

[0031] adjusting the counterweight assembly to a preset height by means of the first driving member;

[0032] The control adsorption member releases the movable sleeve so that the counterweight assembly freely falls along the vertical direction to the prefabricated plate along with the movable sleeve.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a device and method for detecting the impact resistance of a prefabricated plate. When detecting the influence of weight factors on the impact resistance of a prefabricated plate, only a counterweight component with a suitable counterweight weight is selected from a plurality of counterweight components as required, and the counterweight component with the counterweight weight is moved to the bottom of a movable sleeve, so that the corresponding counterweight component can impact the prefabricated plate under the drive of a hovering control mechanism, and the detection process is easy to operate. After the corresponding counterweight component moves to the bottom of the movable sleeve, the first driving member drives the fixed sleeve to move in the vertical direction, and then drives the movable sleeve adsorbed in the fixed sleeve to move in the vertical direction together, until the output end of the second driving member arranged on the movable sleeve is connected to the connecting frame of the counterweight component located below it, and if the movable sleeve is continued to be driven to move downward, the corresponding counterweight component can be moved downward together, so that the counterweight component reaches a preset height, that is, the counterweight component can change its vertical distance from the prefabricated plate under the drive of the hovering control mechanism, so as to detect the influence of the impact height factor on the impact resistance of the prefabricated plate. When the output end of the second driving member is connected to the connecting frame 1 of the counterweight assembly, and the counterweight assembly moves to a preset height, the mobile sleeve is desorbed from the fixed sleeve by controlling the adsorption member 1, and the mobile sleeve is released from the fixed sleeve. The mobile sleeve and the counterweight assembly will hit the prefabricated board in the vertical direction under the action of their own gravity, and the impact resistance of the prefabricated board is tested. In the detection process, no manual drive is required throughout the process, and the degree of automation is high, which improves the efficiency of the detection. When the output end of the second driving member is connected to the connecting frame 1 of the counterweight assembly, if the contact area between the counterweight assembly and the prefabricated board needs to be adjusted, the second driving member is controlled to drive the corresponding connecting frame 1 of the counterweight assembly to move in the vertical direction. The connecting frame 1 can drive one or more of the multiple counterweights to move in the vertical direction until the counterweight of the inner layer corresponding to the contact area extends in the vertical direction relative to the outermost counterweight. At this time, the contact area between the counterweight assembly and the prefabricated board changes from the cross-sectional size of the outer counterweight to the cross-sectional size of the inner counterweight that extends relatively, thereby completing the detection of the influence of the contact area factor on the impact resistance of the prefabricated board. The device and method for detecting the impact resistance of prefabricated panels provided by the present invention can detect the influence of various factors on the impact resistance of prefabricated panels, expand the application scope of the detection device, and improve the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a device for testing the impact resistance of a prefabricated plate provided by the present invention;

[0036] Figure 2 The invention provides a device for detecting the impact resistance of a prefabricated plate. Figure 1 ;

[0037] Figure 3It is an exploded view of the first driving member, the fixed sleeve, the movable sleeve and the second driving member of the device for testing the impact resistance of the prefabricated plate provided by the present invention;

[0038] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0039] Figure 5 It is a schematic diagram of a suspension control mechanism and a mounting frame of a prefabricated plate impact resistance testing device provided by the present invention;

[0040] Figure 6 It is an exploded view of the mounting frame of the prefabricated plate impact resistance testing device provided by the present invention;

[0041] Figure 7 yes Figure 3 The enlarged view of point B in the middle;

[0042] Figure 8 The invention provides a device for detecting the impact resistance of a prefabricated plate. Figure 2 ;

[0043] Fig. 9 It is a structural schematic diagram of a connecting frame 1, a connecting frame 2 and a connecting frame 3 of a prefabricated plate impact resistance testing device provided by the present invention;

[0044] Fig.10 yes Figure 2 Enlarged view of point C in the middle;

[0045] Fig.11 This is a schematic diagram of the structure of the base and angle adjustment assembly of the prefabricated board impact resistance testing device provided by the present invention.

[0046] Fig.12 yes Fig.11 The enlarged view of point D in the middle;

[0047] Fig.13 yes Fig.11 Enlarged view of point E in the middle;

[0048] Fig.14 yes Fig.11 The enlarged view of F in the middle;

[0049] Fig.15 It is a schematic diagram of the flow of the method for testing the impact resistance of prefabricated panels provided by the present invention.

[0050] In the figure:

[0051] 100. Prefabricated panels;

[0052] 1. Base; 111. Fifth slide groove; 112. Fifth slide block; 12. Universal wheel; 13. Suction cup;

[0053] 2. Testing table; 21. Connecting ear plate 1; 22. L-shaped testing frame;

[0054] 3. Counterweight assembly; 31. Counterweight; 311. Cover plate; 312. Elastic stopper; 32. Connecting frame 1; 321. Connecting seat; 322. Connecting arm; 33. Connecting piece; 331. Third screw rod; 332. Adsorbing piece 2; 333. Slot; 34. Second slide groove; 351. Third slide groove; 352. Third slider; 353. First elastic piece; 361. Piercing piece; 362. Connecting frame 2; 363. First tooth plate; 364. Gear; 365. Connecting frame 3; 366. Second tooth plate; 37. Splicing plate; 371. Fourth slide groove; 372. Fourth slider; 373. Second elastic piece; 374. Second groove;

[0055] 4. Suspension control mechanism; 41. First driving member; 42. Fixed sleeve; 421. Adsorption member 1; 43. Moving sleeve; 431. First slider; 432. Magnetic block 1; 433. Magnetic block 2; 44. Second driving member; 45. Fixed bracket; 451. First screw rod; 452. First slide rod; 453. First slide rack; 454. Connecting plate; 46. First movable bracket; 461. Second screw rod; 462. Second slide rod; 463. Second slide rack; 47. Second movable bracket; 471. Support part 1; 472. Support part 2; 473. Linear driving member; 474. Slide rail; 48. First pair of plug parts;

[0056] 5. Mounting frame; 51. Mounting slot; 52. Limiting hole;

[0057] 6. Angle adjustment assembly; 61. Movable shaft; 62. Rotating member; 631. Threaded rod; 632. Second threaded sleeve; 633. Rotating disk; 64. Fixed shaft. DETAILED DESCRIPTION

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0059] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0062] Embodiment 1

[0063] like Figures 1 to 14 As shown, this embodiment relates to the field of impact resistance detection technology, and discloses a prefabricated board impact resistance performance detection device, which is simple to operate and can also improve the detection efficiency, detect the influence of various factors on the impact resistance of the prefabricated board 100, expand the adaptability of the device, and improve the accuracy of the detection results.

[0064] See also Figure 1 , Figure 2 and Figure 3 The impact resistance testing device of the prefabricated board in this embodiment includes a base 1, a plurality of counterweight assemblies 3 and a hovering control mechanism 4. A testing platform 2 is arranged on the base 1, and the testing platform 2 is used to support the prefabricated board 100. The plurality of counterweight assemblies 3 have a plurality of counterweight weights, and each counterweight assembly 3 can be movably arranged on the base 1. Each counterweight assembly 3 includes a connecting frame 32 and a plurality of counterweight pieces 31 sequentially arranged from the outside to the inside, and the distance between each adjacent two counterweight pieces 31 along the vertical direction ( Figure 1The connecting frame 1 32 is located in the innermost counterweight 31 and is fixedly connected to the outermost counterweight 31. Any counterweight 31 within the outermost counterweight 31 is slidably connected to the connecting frame 1 32 in the vertical direction. The hovering control mechanism 4 is movably arranged on the base 1, and the hovering control mechanism 4 includes a first driving member 41, a fixed sleeve 42, a movable sleeve 43 and a second driving member 44. The first driving member 41 is suspended above the detection platform 2, and the output end of the first driving member 41 is connected to the fixed sleeve 42, which is used to drive the fixed sleeve 42 to move in the vertical direction; an adsorption member 421 is arranged in the fixed sleeve 42, and the movable sleeve 43 is detachably arranged in the fixed sleeve 42 in the vertical direction through the adsorption member 421; the second driving member 44 is arranged in the movable sleeve 43, and the output end of the second driving member 44 can be selectively connected to the connecting frame 32 of any counterweight assembly 3, and the second driving member 44 is configured to drive at least one inner layer of counterweight 31 to extend in the vertical direction relative to the outermost layer of counterweight 31 through the connecting frame 32.

[0065] The device for detecting the impact resistance of prefabricated board materials provided in the present embodiment only needs to select a counterweight component 3 with a suitable counterweight weight from a number of counterweight components 3 as needed when detecting the influence of the weight factor on the impact resistance of the prefabricated board material 100, and move the counterweight component 3 with the counterweight weight to the bottom of the movable sleeve 43, so that the corresponding counterweight component 3 can impact the prefabricated board material 100 under the drive of the hovering control mechanism 4, and the detection process is easy to operate.

[0066] After the corresponding counterweight assembly 3 moves to the bottom of the movable sleeve 43, the first driving member 41 drives the fixed sleeve 42 to move in the vertical direction, thereby driving the movable sleeve 43 adsorbed in the fixed sleeve 42 to move in the vertical direction together, until the output end of the second driving member 44 arranged on the movable sleeve 43 is connected to the connecting frame 32 of the counterweight assembly 3 located below it. If the movable sleeve 43 continues to be driven to move downward, the corresponding counterweight assembly 3 can be moved downward therewith, so that the counterweight assembly 3 reaches a preset height, that is, the counterweight assembly 3 can change its vertical distance from the prefabricated plate 100 under the drive of the hovering control mechanism 4, so as to detect the influence of the impact height factor on the impact resistance of the prefabricated plate 100. When the output end of the second driving member 44 is connected to the connecting frame 1 32 of the counterweight assembly 3, and the counterweight assembly 3 moves to a preset height, the movable sleeve 43 is desorbed from the fixed sleeve 42 by controlling the adsorption member 1 421, and the movable sleeve 43 is released from the fixed sleeve 42. The movable sleeve 43 and the counterweight assembly 3 will hit the prefabricated board 100 in the vertical direction under the action of their own gravity, completing the test of the impact resistance of the prefabricated board 100. During the test process, no manual drive is required throughout the process, and the degree of automation is high, which improves the efficiency of the test.

[0067] When the output end of the second driving member 44 is connected to the connecting frame 132 of the counterweight assembly 3, if the contact area between the counterweight assembly 3 and the prefabricated board 100 needs to be adjusted, the second driving member 44 is controlled to drive the corresponding connecting frame 132 of the counterweight assembly 3 to move in the vertical direction. The connecting frame 132 can drive one or more of the multiple counterweights 31 to move in the vertical direction until the counterweight 31 located in the inner layer of the corresponding contact area extends in the vertical direction relative to the outermost counterweight 31. At this time, the contact area between the counterweight assembly 3 and the prefabricated board 100 changes from the cross-sectional size of the outer counterweight 31 to the cross-sectional size of the relatively extended inner counterweight 31, thereby completing the detection of the influence of the contact area factor on the impact resistance of the prefabricated board 100. The prefabricated board impact resistance detection device provided in this embodiment can detect the influence of various factors on the impact resistance of the prefabricated board 100, expand the scope of application of the detection device, and improve the accuracy of the detection result. The preset height is the distance between the lowermost end of the counterweight assembly 3 and the prefabricated board 100 before it falls, and is determined by the impact force required to detect the impact resistance of the prefabricated board 100.

[0068] The counterweight assembly 3 adjusts its position with the movable sleeve 43 by moving, so that the output end of the second driving member 44 arranged on the movable sleeve 43 can be connected to the connecting frame 32 of the counterweight assembly 3; and because several counterweight assemblies 3 are arranged on the base 1, only by moving can the second driving member 44 be connected to the counterweight assembly 3 with a suitable counterweight weight, so as to detect the influence of different contact areas on the impact resistance of the prefabricated panel 100.

[0069] In an optional embodiment, several counterweight components 3 are made of materials with different densities, so that several counterweight components 3 have the same volume and different counterweight weights, wherein several counterweight components 3 are set to the same volume, that is, the cross-sectional dimensions of several counterweight components 3 are also the same, so that the contact area factor can remain unchanged when detecting the influence of the weight factor, thereby ensuring the accuracy of the detection result. In another optional embodiment, the innermost counterweight piece 31 of each counterweight component 3 can also be made into a hollow structure, and the weight of each counterweight component 3 can be changed by filling the innermost counterweight piece 31 with objects of different weights.

[0070] When the adsorbing member 421 adsorbs the movable sleeve 43, the movable sleeve 43 slides in the vertical direction and is disposed in the fixed sleeve 42; when the adsorbing member 421 releases the movable sleeve 43, the movable sleeve 43 is separated from the fixed sleeve 42. Figure 4The inner wall of the fixed sleeve 42 is provided with a first sliding groove extending along its extension direction, and the outer wall of the movable sleeve 43 is provided with a first sliding block 431 that slides with the first sliding groove. The first sliding groove and the first sliding block 431 can not only realize the sliding connection between the movable sleeve 43 and the fixed sleeve 42, but also prevent the movable sleeve 43 from rotating relative to the fixed sleeve 42, thereby avoiding driving the connecting frame 32 connected thereto to move.

[0071] In this embodiment, refer to Figure 4 , the adsorption member 421 is an electromagnet block that can generate a magnetic field, and a magnetic block 432 is provided at one end of the movable sleeve 43 connected to the fixed sleeve 42. When the electromagnet block is powered on, the electromagnet block can generate a magnetic field, and the magnetic block 432 of the movable sleeve 43 can be magnetically attracted to it; when the electromagnet block is powered off, the magnetic field generated by the electromagnet block disappears, and the electromagnet block no longer magnetically attracts the magnetic block 432 of the movable sleeve 43, thereby releasing the movable sleeve 43 from the fixed sleeve 42. In other embodiments, the adsorption member 421 can also be a suction nozzle, which is connected to the vacuum pump through an air pipe. When the vacuum pump is working, the suction nozzle can generate negative pressure, thereby adsorbing the movable sleeve 43. When the vacuum pump is turned off, the negative pressure in the suction nozzle disappears, and the movable sleeve 43 can be released from the fixed sleeve 42.

[0072] See also Figure 2 In this embodiment, each counterweight assembly 3 includes three counterweights 31 sequentially mounted from outside to inside, namely, an inner counterweight, a middle counterweight and an outer counterweight, so that the counterweight assembly 3 and the prefabricated plate 100 can have three contact areas of different sizes, wherein the outer counterweight and the middle counterweight are cylindrical structures, and the inner counterweight is a block structure. In other embodiments, two, four or five counterweights 31 sequentially mounted from outside to inside can be provided, and the number of counterweights 31 in each counterweight assembly 3 is determined according to specific detection requirements.

[0073] Exemplarily, the first driving member 41 is a hydraulic cylinder or a pneumatic cylinder, and the fixing sleeve 42 is connected to a piston rod of the hydraulic cylinder or the pneumatic cylinder.

[0074] Optionally, see Figure 1 and Figure 5The hovering control mechanism 4 further includes a fixed bracket 45, a first movable bracket 46 and a second movable bracket 47. The fixed bracket 45 is fixed to the base 1. The first movable bracket 46 is slidably arranged on the fixed bracket 45 along the second direction. The second movable bracket 47 is slidably arranged on the first movable bracket 46 along the first direction. The first driving member 41 is fixedly connected to the second movable bracket 47. A plurality of counterweight assemblies 3 are movably arranged on the second movable bracket 47 along the first direction. The first direction and the second direction are arranged at an angle. By arranging the first movable bracket 46 and the second movable bracket 47, the first driving member 41, the fixed sleeve 42, the movable sleeve 43, the second driving member 44 and the plurality of counterweight assemblies 3 can all move along the first direction and the second direction to adjust the position where the counterweight assembly 3 hits the prefabricated plate 100, thereby detecting the impact resistance at different positions of the prefabricated plate 100, so that the detection result can be more comprehensive.

[0075] In this embodiment, the first direction is the left-right direction of the prefabricated plate 100 ( Figure 5 The second direction is the front-to-back direction of the prefabricated plate 100 ( Figure 5 Y direction in ).

[0076] In other embodiments, the first direction may also be the front-to-back direction of the prefabricated board 100 , and the second direction may be the left-to-right direction of the prefabricated board 100 .

[0077] Specifically, see Figure 3 and Figure 5The fixed bracket 45 extends along the second direction, and is provided with a rotating driving member 1, a first screw rod 451 and a first sliding rod 452 extending along the second direction. A first slide 453 slidingly matched with the first sliding rod 452 is fixed on the first movable bracket 46, and a threaded hole 1 threadedly matched with the first screw rod 451 is provided on the first slide 453, and the first screw rod 451 passes through the threaded hole 1 along the second direction. The output end of the rotating driving member 1 is connected to the first screw rod 451, which is used to drive the first screw rod 451 to rotate, thereby driving the first slide 453 to slide on the first sliding rod 452, so that the first movable bracket 46 can move along the second direction driven by the first slide 453. The first movable bracket 46 is provided with a second rotating driving member, a second screw rod 461 and a second slide rod 462 extending along the first direction; the second movable bracket 47 is fixed with a second slide 463 which is slidably matched with the second slide rod 462; the second slide 463 is provided with a second threaded hole which is threadedly matched with the second screw rod 461, and the second screw rod 461 passes through the second threaded hole along the first direction; the output end of the second rotating driving member is connected with the second screw rod 461 for driving the second screw rod 461 to rotate, thereby driving the second slide 463 to slide on the second slide rod 462, so that the second movable bracket 47 can move along the first direction driven by the second slide 463. Under the joint action of the first screw rod 451, the second screw rod 461, the first slide rod 452 and the second slide rod 462, the first slide 453 can always move only along the second direction, and the movement process is stable, which can prevent the first driving member 41, the fixed sleeve 42, the movable sleeve 43, the second driving member 44 and several counterweight assemblies 3 from shaking during the movement.

[0078] Furthermore, to ensure the stability of movement, two groups of fixed brackets 45 are provided, and the first movable bracket 46 moves along the second direction between the two groups of fixed brackets 45. The two groups of fixed brackets 45 are connected by a connecting plate 454 to enhance the overall strength of the hovering control mechanism 4. Two groups of second slide bars 462 are also provided, and the two groups of second slide bars 462 are arranged up and down. The second slide 463 is slidably matched with the two groups of second slide bars 462 at the same time. The second screw rod 461 is provided between the two groups of second slide bars 462 to stably support the second movable bracket 47 and enhance the stability of the movement of the second movable bracket 47.

[0079] Exemplarily, the first rotating driving member and the second rotating driving member are both motors.

[0080] Optionally, see Figure 1 , Figure 3 and Figure 6The prefabricated plate anti-impact performance testing device further comprises a mounting frame 5 movably arranged on the base 1, a plurality of mounting slots 51 are arranged on the mounting frame 5, a plurality of counterweight assemblies 3 are arranged in the plurality of mounting slots 51 in a one-to-one and detachable manner, and the first driving member 41 can drive the movable sleeve 43 and the second driving member 44 to drive the counterweight assemblies 3 out of the corresponding mounting slots 51 through the fixed sleeve 42. With such a configuration, a plurality of counterweight assemblies 3 can be installed on the mounting frame 5 at one time, and a plurality of counterweight assemblies 3 can be used to continuously test the prefabricated plate 100 for multiple times, which saves the time of installing and replacing the counterweight assemblies 3 and improves the efficiency of the overall test.

[0081] See also Figure 5 and Figure 6 The second movable bracket 47 includes a support part 1 471 and a support part 2 472. The support part 1 471 is an L-shaped plate, the long plate of the L-shaped plate is vertically arranged and fixedly connected to the second slide 463. The first driving member 41 is fixed to the short plate of the L-shaped plate. The support part 2 472 is fixed to the long plate of the L-shaped plate and is located below the short plate of the L-shaped plate. The mounting frame 5 is movably arranged on the support part 2 472. Specifically, the support part 2 472 is provided with a linear driving member 473 and a slide rail 474 extending along the moving direction of several counterweight assemblies 3. The mounting frame 5 is provided with a second slider slidably matched with the slide rail 474. The output end of the linear driving member 473 is connected to the second slider, which is used to drive the second slider to drive the mounting frame 5 to slide along the slide rail 474, thereby moving the position of each counterweight assembly 3.

[0082] Exemplarily, the linear drive member 473 is a cylinder, and a plurality of mounting slots 51 are arranged at intervals along the first direction.

[0083] In this embodiment, when the weight assembly 3 is placed in the installation groove 51, the weight assembly 3 is engaged with the installation groove 51. Figure 6 , the side groove wall of the installation groove 51 is provided with a limiting hole 52, and the outer wall of the outermost counterweight assembly 3 is provided with an elastic limiting member 312. When the counterweight assembly 3 is placed in the installation groove 51, the elastic limiting member 312 can be inserted into the limiting hole 52 to prevent the counterweight assembly 3 from moving in the installation groove 51. When the hovering control mechanism 4 is connected to the counterweight assembly 3, the first driving member 41 continues to drive the movable sleeve 43 to move downward through the fixed sleeve 42, so that the counterweight assembly 3 is subjected to a downward thrust. Under the action of this thrust, a vertical extrusion force is also generated between the elastic limiting member 312 and the limiting hole 52, causing the elastic limiting member 312 to undergo elastic deformation along its extension direction, that is, the insertion depth of the elastic limiting member 312 in the limiting hole 52 gradually decreases, and the counterweight assembly 3 has a tendency to detach from the installation groove 51 and move downward.

[0084] The elastic limiting member 312 includes a limiting rod and a spring. A first groove is provided on the side wall of the outermost counterweight assembly 3. The spring is located in the first groove. One end of the limiting rod can be movably inserted into the first groove and abuts against the spring. A spherical surface is provided at one end of the limiting rod that is inserted into the limiting hole 52. The limiting rod can slide into the limiting hole 52 through the spherical surface under the elastic force of the spring, thereby realizing the limitation of the counterweight assembly 3 in the mounting groove 51. The spherical surface design is more conducive to the elastic limiting member 312 to be inserted into and out of the limiting hole 52.

[0085] Furthermore, a plurality of elastic limit members 312 are provided on the outer wall of the outermost counterweight assembly 3, and the plurality of elastic limit members 312 are arranged at circumferential intervals along the outermost counterweight assembly 3. A plurality of limit holes 52 are provided on the side groove wall of the mounting groove 51, and the plurality of limit holes 52 are arranged one-to-one correspondingly to the plurality of elastic limit members 312, so as to firmly install the counterweight assembly 3 in the mounting groove 51.

[0086] Optionally, see Figure 7 , Figure 8 and Fig. 9 A first pair of plug-in parts 48 are provided at the output end of the second driving member 44, a connecting member 33 extending in the vertical direction is provided on the connecting frame 1 32, and a second pair of plug-in parts are provided at one end of the connecting member 33 away from the connecting frame 1 32. The first pair of plug-in parts 48 can be plugged with the second pair of plug-in parts, which is simple to operate and quick to connect.

[0087] In this embodiment, refer to Figure 2 and Figure 7 , the first pair of plugs 48 are plugs, and the second pair of plugs are slots 333. The plugs are inserted into the slots 333 to complete the connection between the first pair of plugs 48 and the second pair of plugs. The plug includes a first section and a second section connected to each other. The end of the first section away from the second section is connected to the second drive member 44. The cross-sectional area of ​​the first section gradually decreases in the direction close to the second section, and the cross-sectional size of the first section is consistent with the cross-sectional size of the slot 333, and the cross-sectional size of the second section is consistent with the minimum cross-sectional size of the first section. In the process of inserting the plug into the slot 333, the second section of the plug enters the slot 333 first, and the second section of the plug can smoothly enter the slot 333; and when there is a slight deviation in the relative position of the plug and the slot 333, the second section of the plug will abut against the groove wall of the slot 333 after entering the slot 333 and generate an interactive force. This force can adjust the position and angle of the plug so that the first section of the plug can also smoothly enter the slot 333.

[0088] In an alternative embodiment, see Figure 2 and Fig. 9The top of the innermost counterweight 31 is provided with a cover plate 311 that can seal the top, so that the counterweight 31 is neat and beautiful as a whole. A rotation hole is provided on the cover plate 311, and the connecting member 33 includes a first threaded sleeve and a third screw rod 331 that are threadedly matched. The first threaded sleeve is fixedly connected to the connecting frame 1 32, and the second pair of plug-in parts includes an adsorption member 2 332 and a slot 333. The slot 333 is provided at one end of the third screw rod 331 extending out of the first threaded sleeve. The adsorption member 2 332 is arranged outside the slot 333 and rotates with the rotation hole. The first pair of plug-in parts 48 can be inserted into the slot 333 and fixed to the slot 333 through the adsorption member 2 332, which enhances the firmness and stability of the plug-in connection between the first pair of plug-in parts 48 and the second pair of plug-in parts. The second adsorption member 332 is rotatably matched with the rotating hole. When the third screw rod 331 rotates, the second adsorption member 332 rotates with the third screw rod 331 relative to the cover plate 311, so that the rotation of the third screw rod 331 is not restricted by the cover plate 311, and the length of the connecting member 33 is adjusted. The first threaded sleeve is threadedly matched with the third screw rod 331, so that the extension length of the connecting member 33 can be adjusted, and the length adjustment is more accurate and easy to control, and then the distance between the second pair of plugs and the connecting frame 1 32 can be adjusted, that is, by adjusting the length of the connecting member 33, the connecting frame 1 32 can slide relative to each counterweight 31 in the outermost counterweight 31.

[0089] Specifically, the first driving member 41 drives the fixed sleeve 42 to drive the movable sleeve 43 to move downward until the first pair of inserting parts 48 are inserted into the slot 333. The first pair of inserting parts 48 inserted into the slot 333 can be firmly connected with the slot 333 under the adsorption force of the adsorption member 332. At this time, the second driving member 44 is turned on, and the second driving member 44 drives the first pair of inserting parts 48 to drive the third screw rod 331 to rotate. The overlapping length of the third screw rod 331 and the first threaded sleeve changes, and the first threaded sleeve moves upward relative to the third screw rod 331, driving the connecting frame 1 32 to move upward, and then driving the connecting frame 1 32 to move upward. The outermost counterweight 31 connected to the connecting frame 33 also moves upward together, and the outermost counterweight 31 moves relative to the multiple counterweights 31 inside it, completing one adjustment of the contact area; the second driving member 44 is controlled to continue to work, and the connecting frame 1 32 continues to move upward under the drive of the connecting member 33, and the second outermost counterweight 31 will move relative to the multiple counterweights 31 inside it under the drive of the connecting frame 1 32, completing another adjustment of the contact area; if the contact area needs to be adjusted again, the connecting frame 1 32 can be driven to move, and its adjustment method is the same as the adjustment method of the outermost counterweight 31 and the second outermost counterweight 31.

[0090] In this embodiment, refer to Figure 2 and Figure 7, the second adsorption member 332 is an electromagnet ring that can generate a magnetic field, and the second magnetic block 433 is provided at one end of the movable sleeve 43 where the second driving member 44 is provided. When the electromagnet ring is powered on, the electromagnet ring generates a magnetic field, and the second magnetic block 433 of the movable sleeve 43 can be magnetically attracted to it to firmly connect the first pair of plug-in parts 48 with the slot 333; when the electromagnet ring is powered off, the magnetic field of the electromagnet ring disappears, and the electromagnet ring no longer magnetically attracts the second magnetic block 433 of the movable sleeve 43, thereby releasing the first pair of plug-in parts 48 from the slot 333, and the movable sleeve 43 can be separated from the counterweight assembly 3. In other embodiments, the second adsorption member 332 can also be provided at one end of the movable sleeve 43 where the second driving member 44 is provided, and the second pair of plug-in parts includes the slot 333 and a rotating ring, which is arranged outside the slot 333 and rotatably cooperates with the rotating hole, and the rotating ring can be magnetically attracted to the second adsorption member 332, and the first pair of plug-in parts 48 can still be fixed in the slot 333 through the second adsorption member 332.

[0091] Exemplarily, the second driving member 44 is a motor, which can drive the first pair of inserting parts 48 to drive the third screw rod 331 to rotate through the second pair of inserting parts.

[0092] In another optional embodiment, the connecting member 33 is a connecting rod extending in the vertical direction, one end of which is fixedly connected to the connecting frame 32, and the other end movably passes through the cover plate 311. A socket is provided at one end of the connecting rod passing through the cover plate 311, and the output end of the second driving member 44 can be inserted into the socket to drive the connecting rod to move vertically.

[0093] Exemplarily, the second driving member 44 is a cylinder, and a piston rod of the cylinder is inserted into the socket.

[0094] Optionally, see Figure 2 , Figure 8 and Fig. 9 , each counterweight piece 31 within the outermost counterweight piece 31 is provided with a second slide groove 34 extending in the vertical direction, the connecting frame 32 includes a connecting seat 321 and a connecting arm 322 arranged on the connecting seat 321, the connecting piece 33 is fixed to the connecting seat 321, the connecting arm 322 passes through the second slide groove 34 on each counterweight piece 31 within the outermost counterweight piece 31 in turn, and slides with the corresponding second slide groove 34, and the end of the connecting arm 322 away from the connecting seat 321 is fixedly connected to the outermost counterweight piece 31, so that the connecting seat 321 can move vertically driven by the connecting piece 33, so that the connecting arm 322 slides in the second slide groove 34, that is, the connecting frame 1 32 slides relative to any counterweight piece 31 within the outermost counterweight piece 31.

[0095] Specifically, the second driving member 44 drives the first pair of inserting parts 48 to drive the connecting member 33 to move upward, and the connecting seat 321 also moves accordingly. The outermost counterweight 31 also moves upward under the drive of the connecting arm 322. The connecting arm 322 slides in the second slide groove 34 of each counterweight 31 within the outermost counterweight 31, and the outermost counterweight 31 moves relative to each counterweight 31 within it, completing a single adjustment of the contact area.

[0096] Furthermore, the connecting frame 32 includes two connecting arms 322, and the two connecting arms 322 are symmetrically arranged on both sides of the connecting seat 321, so that the multiple counterweights 31 can slide symmetrically at both ends, preventing the counterweights 31 from tilting when sliding, causing the collision surface of the counterweight assembly 3 and the prefabricated panel 100 to also tilt, affecting the detection result.

[0097] Exemplarily, one end of the connector 33 is clamped in the connector seat 321. A clamping tongue is provided at one end of the connector 33 connected to the connector seat 321. The connector seat 321 is an annular connector seat 321, in which a clamping groove matching the clamping tongue is provided. After the connector 33 is inserted into the annular connector seat 321, the clamping tongue can be clamped in the clamping groove, completing the clamping connection between the connector 33 and the connector seat 321.

[0098] Optionally, see Figure 2 and Figure 8 Each counterweight 31 is provided with a third slide groove 351 extending in the vertical direction, and a third slider 352 is slidably arranged in the third slide groove 351. Among two adjacent counterweights 31, the third slider 352 of the outer counterweight 31 is fixedly connected to the outer side wall of the inner counterweight 31, so that the two adjacent counterweights 31 can slide relatively stably.

[0099] A first elastic member 353 is provided on the sliding path of the third slider 352 in the third slide groove 351. The third slider 352 can slide in the third slide groove 351 under the elastic force of the first elastic member 353, so that the bottom surface of the inner counterweight member 31 of two adjacent counterweight members 31 is flush with the bottom surface of the outer counterweight member 31, so that after the two adjacent counterweight members 31 slide relative to each other, they can automatically move vertically to a position where the bottom surfaces are flush under the action of the elastic force. No manual operation is required, the degree of automation is high, and the counterweight assembly 3 can be reused.

[0100] Specifically, among the two adjacent counterweights 31, the outer counterweight 31 moves upward relative to the inner counterweight 31 driven by the connecting frame 32, and the third slider 352 of the outer counterweight 31 moves downward in the third slide groove 351, and the first elastic member 353 of the outer counterweight 31 undergoes elastic deformation to accumulate elastic force; when the counterweight assembly 3 hits the prefabricated panel 100, the outer counterweight 31 is no longer constrained by external force, the elastic force of the first elastic member 353 of the outer counterweight 31 is released, and the third slider 352 of the outer counterweight 31 automatically moves upward under the action of the elastic force, so that the outer counterweight 31 can automatically move to a position where its bottom surface is flush with the bottom surface of the inner counterweight 31.

[0101] Exemplarily, the first elastic member 353 is a spring, and the third slider 352 of the outer counterweight member 31 can be bonded to the outer side wall of the inner counterweight member 31 .

[0102] Furthermore, each counterweight member 31 is symmetrically provided with two groups of third slide grooves 351, a third slider 352 and a first elastic member 353, so that each counterweight member 31 can slide symmetrically at both ends to prevent the counterweight member 31 from tilting when sliding, causing the collision surface between the counterweight assembly 3 and the prefabricated panel 100 to also tilt, thereby affecting the detection result.

[0103] Optionally, see Figure 8 , Fig. 9 and Fig.10 , a piercing piece 361 which can extend out of the innermost counterweight piece 31 in the vertical direction is provided in the innermost counterweight piece 31, and a connecting frame 2 362 is provided on the piercing piece 361, and the end of the connecting frame 2 362 away from the piercing piece 361 is fixedly connected to the third slider 352 on the innermost counterweight piece 31, and a first tooth plate 363 is provided on the third slider 352, and a gear 364 meshing with the first tooth plate 363 is provided on the inner wall of the innermost counterweight piece 31; a connecting frame 365 is provided on the connecting frame 1 32, and a second tooth plate 366 is provided at the end of the connecting frame 365 away from the connecting frame 1 32, and the second driving member 44 can drive the connecting frame 1 32 to move in the vertical direction until the second tooth plate 366 meshes with the gear 364, and drive the connecting frame 2 362 through the transmission action of the second tooth plate 366, the gear 364 and the first tooth plate 363 to drive the piercing piece 361 to extend out of the innermost counterweight piece 31. After the puncture piece 361 extends out relative to the innermost counterweight piece 31, when the counterweight assembly 3 hits the prefabricated board 100, only the puncture piece 361 can contact the prefabricated board 100, thereby the puncture resistance of the prefabricated board 100 can be tested without using other equipment, thereby reducing the testing cost and improving the testing efficiency.

[0104] Specifically, the second tooth plate 366 is located below the gear 364. When the connecting frame 1 32 moves upward, the connecting frame 365 drives the second tooth plate 366 to move upward with the connecting frame 1 32, and the second tooth plate 366 will engage with the gear 364. After engagement, the second tooth plate 366 continues to move upward, and the gear 364 rotates, driving the first tooth plate 363 to move vertically, and then driving the third slider 352 of the innermost counterweight 31 to slide downward in the corresponding third slide groove 351. At this time, the connecting frame 2 362 moves downward under the drive of the third slider 352, driving the piercing member 361 to move downward and extend out of the innermost counterweight 31.

[0105] Exemplarily, the piercing member 361 is a plumb bob.

[0106] Furthermore, two groups of connecting frame 2 362, first tooth plate 363, gear 364, second tooth plate 366 and connecting frame 3 365 are provided, and the two groups of connecting frame 2 362, first tooth plate 363, gear 364, second tooth plate 366 and connecting frame 3 365 are symmetrically arranged on both sides of connecting frame 1 32, so that the puncture member 361 can move vertically symmetrically at both ends to prevent the puncture member 361 from tilting and affecting the detection result.

[0107] Optionally, see Figure 2 and Figure 8 A bottom plate is provided at the bottom of the innermost counterweight 31, and the bottom plate includes a plurality of splicing plates 37 slidably connected to the innermost counterweight 31, and each splicing plate 37 has a first position and a second position. In the first position, a plurality of splicing plates 37 are spliced ​​together to form the bottom plate; in the process of the piercing member 361 extending out of the innermost counterweight 31, a plurality of splicing plates 37 can slide from the first position to the second position under the pushing action of the piercing member 361, so that the movement of the splicing plates 37 is more convenient without the need for external force.

[0108] In this embodiment, all counterweights 31 except the innermost counterweight 31 are cylindrical structures, and the area of ​​the bottom plate of the innermost counterweight 31 is the contact area between the innermost counterweight 31 and the prefabricated plate 100. The contact area between the other counterweights 31 except the innermost counterweight 31 and the prefabricated plate 100 is the sum of the bottom plate area of ​​the innermost counterweight 31 and the side wall cross-sectional areas of all cylindrical counterweights 31 other than the innermost counterweight 31 and in contact with the prefabricated plate 100.

[0109] In this embodiment, the fourth slider 372 is fixedly connected to the bottom of the innermost counterweight 31. For example, the fourth slider 372 and the bottom of the side wall of the innermost counterweight 31 can be bonded.

[0110] See also Figure 2Each splicing plate 37 is provided with a fourth slide groove 371 extending along its sliding direction, and a fourth slider 372 is slidably provided in the fourth slide groove 371, and the fourth slider 372 is fixedly connected to the innermost counterweight 31; a second elastic member 373 is provided in the fourth slide groove 371 on the sliding path of the fourth slider 372, and the fourth slider 372 can slide in the fourth slide groove 371 under the elastic force of the second elastic member 373, so that the corresponding splicing plate 37 slides from the second position to the first position, without manual operation, with a high degree of automation and reusability.

[0111] Specifically, the piercing member 361 is a plumb bob, which moves downward under the drive of the second connecting frame 362. The conical surface of the plumb bob will push the splicing plate 37 in the horizontal direction. The splicing plate 37 slides to the second position along the sliding direction under the action of the thrust. At this time, the fourth slider 372 slides in the fourth slide groove 371, and the second elastic member 373 is elastically deformed. When the plumb bob hits the prefabricated plate 100, the plumb bob will automatically retract into the innermost counterweight 31, and the thrust exerted on the multiple splicing plates 37 disappears, so that the splicing plates 37 can automatically return to the first position under the action of the elastic force.

[0112] In this embodiment, refer to Figure 2 The cross-sectional shapes of the multiple counterweights 31 are all rectangular, and the innermost counterweight 31 is provided with four splicing plates 37, each of which is triangular, and each splicing plate 37 is provided with a second groove 374. When in the first position, the four second grooves 374 are arranged to form a receiving groove, and the head of the plumb bob is located in the receiving groove, which can reduce the overall volume of the innermost counterweight 31. In other embodiments, the second groove 374 may not be provided on the splicing plate 37, and when in the first position, the head of the plumb bob is located above the splicing plate 37. Exemplarily, the second elastic member 373 is a spring.

[0113] Optionally, the prefabricated board anti-impact performance testing device further includes an angle adjustment component 6 for adjusting the tilt angle of the testing platform 2 to detect the influence of the impact angle factor on the anti-impact performance of the prefabricated board 100, thereby expanding the application scope of the testing device. Figure 1 and Fig.11 The angle adjustment assembly 6 includes a movable shaft 61, a rotating member 62 and a third driving member. The movable shaft 61 extends along a first direction, and the movable shaft 61 is movably arranged on the base 1 along a second direction. One end of the rotating member 62 is rotatably connected to the movable shaft 61, and the other end is rotatably connected to a first side edge of the detection platform 2. The second side edge of the detection platform 2 is rotatably connected to the base 1, and the first side edge and the second side edge are opposite side edges of the detection platform 2. The output end of the third driving member is connected to the movable shaft 61, and is used to drive the movable shaft 61 to move along the second direction, so that the movable shaft 61 drives the rotating member 62 to drive the detection platform 2 to rotate relative to the base 1.

[0114] In this embodiment, the prefabricated plate 100 rotates around the first direction ( Fig.11 In other embodiments, the prefabricated plate 100 rotates about the second direction ( Fig.11 Y direction in ).

[0115] Specifically, the movable shaft 61 moves along the second direction under the drive of the third driving member, driving the end of the rotating member 62 connected to the movable shaft 61 to move along the second direction, and at the same time the rotating member 62 rotates, so that the end of the rotating member 62 connected to the first side of the detection platform 2 moves along the vertical direction, and the rotating member 62 and the detection platform 2 rotate relative to each other, and the detection platform 2 rotates relative to the base 1, thereby adjusting the angle between the detection platform 2 and the base 1.

[0116] See also Fig.11 and Fig.12 The base 1 is provided with a fifth slide groove 111 extending along the second direction, and a fifth slider 112 is provided in the fifth slide groove 111 to slide with the fifth slide groove 111. The end of the movable shaft 61 is provided with a thread, and the end of the movable shaft 61 passes through the fifth slider 112, and a nut is tightened on the end of the movable shaft 61 to fix the movable shaft 61 on the fifth slider 112. The third driving member drives the movable shaft 61 to move, and the fifth slider 112 slides in the fifth slide groove 111 driven by the movable shaft 61, thereby limiting the direction in which the movable shaft 61 moves on the base 1.

[0117] See also Fig.11 and Fig.13 An ear hole 1 is provided at one end of the rotating member 62 connected to the movable shaft 61, and the movable shaft 61 passes through the ear hole 1 to allow the rotating member 62 to be rotatably connected to the movable shaft 61; an ear hole 2 is provided at one end of the rotating member 62 connected to the first side of the detection platform 2, and a connecting ear plate 21 is provided on the first side of the detection platform 2. The ear hole 2 and the connecting ear plate 21 are connected by parts such as axle pins to allow the rotating member 62 to be rotatably connected to the first side of the detection platform 2.

[0118] Further, see Figure 1 and Fig.11 , the angle adjustment assembly 6 also includes a fixed shaft 64 extending along the first direction, a connecting hole is provided on the second side of the detection platform 2, the fixed shaft 64 passes through the connecting hole along the first direction and is fixed on the base 1, and the second side of the detection platform 2 can rotate around the fixed shaft 64. Further, a thread is provided at the end of the fixed shaft 64, the end of the fixed shaft 64 passes through the base 1, and a nut is tightened on the end of the fixed shaft 64 to fix the fixed shaft 64 on the base 1. In other embodiments, a connecting ear plate 2 can be provided at the connection between the base 1 and the second side of the detection platform 2, and the connecting ear plate 2 can be connected to the connecting hole by parts such as an axle pin to realize the rotation connection between the detection platform 2 and the base 1.

[0119] In this embodiment, refer to Fig.11 The third driving member includes a threaded rod 631 and a second threaded sleeve 632 extending in the second direction. One end of the threaded rod 631 is disposed in the second threaded sleeve 632. The other end of the threaded rod 631 is fixedly connected to the movable shaft 61. The end of the second threaded sleeve 632 away from the threaded rod 631 rotates through the base 1 and is provided with a rotating disk 633 or a motor. The rotating disk 633 is rotated or the motor is turned on to drive the second threaded sleeve 632 to rotate. The length of the threaded rod 631 in the second threaded sleeve 632 changes, thereby driving the movable shaft 61 to move in the second direction. In other embodiments, the third driving member can also be a cylinder, the piston rod of the cylinder is connected to the movable shaft 61, and the cylinder directly drives the movable shaft 61 to move.

[0120] For example, see Figure 1 and Fig.11 The inspection platform 2 is a plurality of L-shaped inspection frames 22 arranged at intervals. When adjusting the inspection angle, the L-shaped inspection frames 22 can limit the prefabricated board 100 to prevent the prefabricated board 100 from sliding off. Furthermore, the L-shaped inspection frames 22 are paved with anti-skid materials, such as rubber, to further prevent the prefabricated board 100 from sliding off when rotating. In other embodiments, the inspection platform 2 can also be set as a U-shaped structure or a flat plate structure, as long as it can stably support the prefabricated board 100.

[0121] Optionally, see Fig.11 and Fig.14 Universal wheels 12 are provided at the four corners of the bottom of the base 1 to facilitate the movement of the prefabricated plate impact resistance performance testing device. A foldable suction cup 13 is also provided at each universal wheel 12. When the testing device moves to a specified position, the suction cup 13 is unfolded and adsorbed to the ground to fix the position of the testing device to prevent it from moving during testing.

[0122] Embodiment 2

[0123] like Fig.15 As shown, this embodiment provides a method for testing the impact resistance of a prefabricated plate 100, which is performed using the above-mentioned impact resistance testing device for the prefabricated plate 100, and includes the following steps:

[0124] Placing the prefabricated board 100 on the testing table 2;

[0125] According to the impact resistance test requirements of the prefabricated plate 100, a counterweight assembly 3 with a suitable counterweight weight is selected, and a suitable impact resistance contact area is selected;

[0126] Control the selected counterweight assembly 3 to move below the second driving member 44;

[0127] The first driving member 41 drives the fixed sleeve 42 to drive the movable sleeve 43 and the second driving member 44 to move in the vertical direction until the output end of the second driving member 44 is connected to the connecting frame 1 32 of the selected counterweight assembly 3;

[0128] According to the selected anti-impact contact area, the second driving member 44 is controlled to drive the inner counterweight member 31 of the corresponding contact area to extend in the vertical direction relative to the outermost counterweight member 31 through the connecting frame 1 32;

[0129] Adjust the counterweight assembly 3 to a preset height through the first driving member 41;

[0130] The control suction member 1 421 releases the movable sleeve 43 , so that the counterweight assembly 3 freely falls along the vertical direction to the prefabricated board 100 along with the movable sleeve 43 .

[0131] Specifically, the linear drive member 473 is controlled to drive the mounting frame 5 to move, so that the counterweight assembly 3 with a selected appropriate counterweight weight is moved to the bottom of the second drive member 44 .

[0132] Specifically, the process of connecting the output end of the second driving member 44 with the connecting frame 32 of the selected counterweight assembly 3 specifically includes the following steps: first control the adsorption member 1 421 and the adsorption member 2 332 to be in a working state to adsorb the movable sleeve 43 into the fixed sleeve 42; then control the first driving member 41 to drive the fixed sleeve 42 to drive the movable sleeve 43 to move vertically until the first pair of inserting parts 48 are inserted into the slot 333 of the third screw rod 331. At this time, the first pair of inserting parts 48 can be firmly connected with the slot 333 under the adsorption action of the adsorption member 2 332, thereby completing the connection between the output end of the second driving member 44 and the connecting frame 32 of the selected counterweight assembly 3.

[0133] Specifically, after the output end of the second driving member 44 is connected to the connecting frame 32 of the corresponding counterweight assembly 3, if the selected contact area is the cross-sectional area of ​​the outermost counterweight assembly 31, the following steps are performed: the first driving member 41 is controlled to continue to drive the fixed sleeve 42 to drive the movable sleeve 43 to move vertically, thereby driving the corresponding counterweight assembly 3 to move vertically in the corresponding mounting groove 51, and the counterweight assembly 3 gradually disengages from the corresponding mounting groove 51; when the counterweight assembly 3 is released from the corresponding mounting groove 51 and moves to a preset height, the first driving member 41 is closed, and the adsorption member 421 is controlled to release the movable sleeve 43, and the movable sleeve 43 slides vertically in the fixed sleeve 42 and disengages from the fixed sleeve 42, and the counterweight assembly 3 will freely fall along the vertical direction with the movable sleeve 43 to the prefabricated panel 100.

[0134] If the selected contact area is the cross-sectional area of ​​a counterweight 31 within the outermost counterweight 31, the following steps are performed: first, the second driving member 44 is turned on to drive the first pair of inserting parts 48 to drive the third screw rod 331 to rotate, and the first threaded sleeve is moved upward, so that the connecting frame 32 drives one or more counterweights 31 to move vertically, wherein each counterweight 31 moves downward in sequence from the outside to the inside, that is, among two adjacent counterweights 31, the outer counterweight 31 moves vertically until the connecting arm 322 abuts against the top of the second slide groove 34 of the outer counterweight 31, and then the inner counterweight 31 starts to move vertically; when it has not yet moved When the cross-sectional area of ​​the moving counterweight members 31 is the selected anti-impact contact area, the second driving member 44 is closed; and then the first driving member 41 is controlled to continue to drive the fixed sleeve 42 to drive the movable sleeve 43 to move vertically, and then the corresponding counterweight assembly 3 is also driven to move vertically in the corresponding mounting groove 51, and the counterweight assembly 3 gradually detaches from the corresponding mounting groove 51; when the counterweight assembly 3 is released from the corresponding mounting groove 51 and moves to a preset height, the first driving member 41 is closed, and the adsorption member 421 is controlled to release the movable sleeve 43, so that the counterweight assembly 3 falls freely along the vertical direction with the movable sleeve 43 to the prefabricated plate 100.

[0135] Further, after the prefabricated board 100 is placed on the inspection table 2, and before the output end of the second driving member 44 is connected to the connecting frame 1 32 of the selected counterweight assembly 3, the impacted position of the prefabricated board 100 can be adjusted by the first movable bracket 46 and the second movable bracket 47. Specifically, the first rotary driving member is controlled to drive the first slide 453 to drive the first movable bracket 46 to move in the second direction, and the second rotary driving member is controlled to drive the second slide 463 to drive the second movable bracket 47 to move in the first direction, so as to adjust the position where the counterweight assembly 3 freely falls to the prefabricated board 100.

[0136] Furthermore, before controlling the adsorption member 421 to release the movable sleeve 43, the rotation angle of the prefabricated plate 100 can be adjusted, and the prefabricated plate 100 can be placed on the testing platform 2 before the angle adjustment, or can be placed on the testing platform 2 after the angle adjustment. Specifically, the third driving member is controlled to drive the movable shaft 61 to drive the rotating member 62 to rotate, and the rotating member 62 drives the testing platform 2 to rotate. When the testing platform 2 rotates to a desired angle, the third driving member can be closed.

[0137] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for testing the impact resistance of prefabricated panels, characterized in that: include: A base (1) having a detection platform (2) disposed thereon, wherein the detection platform (2) is used to support the prefabricated plate (100); A plurality of counterweight assemblies (3), wherein the plurality of counterweight assemblies (3) have a plurality of counterweight weights, each of the counterweight assemblies (3) can be movably arranged on the base (1), each of the counterweight assemblies (3) comprises a connecting frame (32) and a plurality of counterweight pieces (31) sequentially arranged from the outside to the inside, each two adjacent counterweight pieces (31) are slidably connected in the vertical direction, the connecting frame (32) is located in the innermost layer of the counterweight pieces (31) and is fixedly connected to the outermost layer of the counterweight pieces (31), and any of the counterweight pieces (31) in the outermost layer of the counterweight pieces (31) are slidably connected to the connecting frame (32) in the vertical direction; A suspension control mechanism (4) is movably arranged on the base (1), and comprises a first driving member (41), a fixed sleeve (42), a movable sleeve (43) and a second driving member (44). The first driving member (41) is suspended above the detection platform (2), and an output end of the first driving member (41) is connected to the fixed sleeve (42) for driving the fixed sleeve (42) to move along the vertical direction. An adsorption member 1 (421) is arranged in the fixed sleeve (42), and the movable sleeve (43) is arranged in the movable sleeve (44). The cylinder (43) is detachably arranged in the fixed sleeve (42) along the vertical direction through the adsorption member 1 (421); the second driving member (44) is arranged on the movable sleeve (43), and the output end of the second driving member (44) can be selectively connected to the connecting frame 1 (32) of any of the counterweight assemblies (3), and the second driving member (44) is configured to drive at least one of the inner layer of the counterweight (31) to extend relative to the outermost layer of the counterweight (31) along the vertical direction through the connecting frame 1 (32); The output end of the second driving member (44) is provided with a first pair of plug-in parts (48); the connecting frame (32) is provided with a connecting member (33) extending along the vertical direction; the end of the connecting member (33) away from the connecting frame (32) is provided with a second pair of plug-in parts; the first pair of plug-in parts (48) can be plugged into the second pair of plug-in parts; each of the counterweight members (31) within the outermost layer is provided with a second slide groove (34); the connecting frame (32) includes a connecting seat (321) and a connecting arm (322) provided on the connecting seat (321); the connecting member (33) is fixed to the connecting seat (3 21), the connecting arm (322) is sequentially penetrated through the second slide groove (34) on each of the counterweight pieces (31) within the outermost layer of the counterweight pieces (31), and slidably cooperates with the corresponding second slide groove (34), the end of the connecting arm (322) away from the connecting seat (321) is fixedly connected to the outermost layer of the counterweight piece (31), the connecting seat (321) can move vertically under the drive of the connecting piece (33), so that the connecting arm (322) slides in the second slide groove (34), and the connecting frame (32) slides relative to any of the counterweight pieces (31) within the outermost layer of the counterweight pieces (31).

2. The device for testing the impact resistance of prefabricated panels according to claim 1, characterized in that: The prefabricated plate material impact resistance testing device further comprises a mounting frame (5) movably arranged on the base (1), the mounting frame (5) being provided with a plurality of mounting slots (51), a plurality of the counterweight assemblies (3) being detachably arranged in the plurality of mounting slots (51) in a one-to-one correspondence, and the first driving member (41) can drive the movable sleeve (43) and the second driving member (44) to drive the counterweight assemblies (3) to disengage from the corresponding mounting slots (51) via the fixed sleeve (42).

3. The device for testing the impact resistance of prefabricated panels according to claim 2, characterized in that: A cover plate (311) is provided on the top of the innermost counterweight (31), and a rotation hole is provided on the cover plate (311). The connecting member (33) comprises a first threaded sleeve and a third screw rod (331) which are threadedly matched, the first threaded sleeve is fixedly connected to the first connecting frame (32), the second pair of inserting parts comprises a second adsorption member (332) and a slot (333), the slot (333) is provided at one end of the third screw rod (331) extending out of the first threaded sleeve, the second adsorption member (332) is arranged outside the slot (333) and is rotationally matched with the rotation hole, and the first pair of inserting parts (48) can be inserted into the slot (333) and fixed to the slot (333) through the second adsorption member (332).

4. The device for testing the impact resistance of prefabricated panels according to claim 1, characterized in that: Each of the counterweight members (31) is provided with a third slide groove (351) extending along the vertical direction, a third slider (352) is slidably provided in the third slide groove (351), and the third slider (352) of the outer counterweight member (31) of two adjacent counterweight members (31) is fixedly connected to the outer side wall of the inner counterweight member (31); A first elastic member (353) is provided in the third slide groove (351) on the sliding path of the third slider (352); the third slider (352) can slide in the third slide groove (351) under the elastic force of the first elastic member (353), so that the bottom surface of the inner layer of the counterweight member (31) of two adjacent counterweight members (31) is flush with the bottom surface of the outer layer of the counterweight member (31).

5. The device for testing the impact resistance of prefabricated panels according to claim 4, characterized in that: The innermost counterweight (31) is provided with a piercing member (361) which can extend out of the innermost counterweight (31) along the vertical direction; the piercing member (361) is provided with a second connecting frame (362); an end of the second connecting frame (362) away from the piercing member (361) is fixedly connected to a third slider (352) on the innermost counterweight (31); the third slider (352) is provided with a first tooth plate (363); and a gear (364) meshing with the first tooth plate (363) is provided on the inner wall of the innermost counterweight (31); the connecting frame (362) is provided with a second connecting frame (362); A connecting frame three (365) is arranged on the frame one (32), and a second tooth plate (366) is arranged at one end of the connecting frame three (365) away from the connecting frame one (32). The second driving member (44) can drive the connecting frame one (32) to move along the vertical direction until the second tooth plate (366) meshes with the gear (364), and drive the connecting frame two (362) through the transmission action of the second tooth plate (366), the gear (364) and the first tooth plate (363) to drive the piercing member (361) to extend out of the innermost counterweight member (31).

6. The device for testing the impact resistance of prefabricated panels according to claim 5, characterized in that: A bottom plate is provided at the bottom of the innermost counterweight (31), and the bottom plate includes a plurality of splicing plates (37) slidably connected to the innermost counterweight (31), and each of the splicing plates (37) has a first position and a second position. In the first position, the plurality of splicing plates (37) are spliced ​​together to form the bottom plate; when the piercing member (361) extends out of the innermost counterweight (31), the plurality of splicing plates (37) can slide from the first position to the second position under the pushing action of the piercing member (361); Each of the splicing plates (37) is provided with a fourth slide groove (371) extending along its sliding direction, and a fourth slider (372) is slidably arranged in the fourth slide groove (371), and the fourth slider (372) is fixedly connected to the innermost counterweight (31); a second elastic member (373) is arranged in the fourth slide groove (371) on the sliding path of the fourth slider (372), and the fourth slider (372) can slide in the fourth slide groove (371) under the elastic force of the second elastic member (373), so that the corresponding splicing plate (37) slides from the second position to the first position.

7. The device for testing the impact resistance of prefabricated panels according to any one of claims 1 to 6, characterized in that: The hovering control mechanism (4) further comprises a fixed bracket (45), a first movable bracket (46) and a second movable bracket (47), wherein the fixed bracket (45) is fixed to the base (1), the first movable bracket (46) is slidably arranged on the fixed bracket (45) along the second direction, the second movable bracket (47) is slidably arranged on the first movable bracket (46) along the first direction, the first driving member (41) is fixedly connected to the second movable bracket (47), and a plurality of the counterweight assemblies (3) are movably arranged on the second movable bracket (47) along the first direction, and the first direction and the second direction are arranged at an angle.

8. The device for testing the impact resistance of prefabricated panels according to any one of claims 1 to 6, characterized in that: The prefabricated board material impact resistance testing device further comprises an angle adjustment component (6) for adjusting the inclination angle of the testing platform (2), wherein the angle adjustment component (6) comprises: A movable shaft (61) extending along a first direction, the movable shaft (61) being movably disposed on the base (1) along a second direction; a rotating member (62), one end of the rotating member (62) being rotatably connected to the movable shaft (61), and the other end of the rotating member (62) being rotatably connected to a first side edge of the detection platform (2), a second side edge of the detection platform (2) being rotatably connected to the base (1), and the first side edge and the second side edge being opposite side edges of the detection platform (2); A third driving member, wherein an output end of the third driving member is connected to the movable shaft (61) and is used to drive the movable shaft (61) to move along a second direction, so that the movable shaft (61) drives the rotating member (62) to drive the detection platform (2) to rotate relative to the base (1), and the first direction and the second direction are arranged at an angle.

9. A method for testing the impact resistance of a prefabricated plate (100), characterized in that: Using the impact resistance detection device of the prefabricated board (100) according to any one of claims 1 to 8, the impact resistance detection method of the prefabricated board (100) comprises the following steps: Placing the prefabricated plate (100) on the testing table (2); Selecting a counterweight assembly (3) with a suitable counterweight weight according to the impact resistance test requirements of the prefabricated plate (100), and selecting a suitable impact resistance contact area; Controlling the selected counterweight assembly (3) to move below the second driving member (44); The first driving member (41) drives the fixed sleeve (42) to drive the movable sleeve (43) and the second driving member (44) to move along the vertical direction until the output end of the second driving member (44) is connected to the connecting frame 1 (32) of the selected counterweight assembly (3); According to the selected impact-resistant contact area, the second driving member (44) is controlled to drive the inner layer of the counterweight member (31) corresponding to the contact area to extend relative to the outermost layer of the counterweight member (31) along the vertical direction through the connecting frame 1 (32); Adjusting the counterweight assembly (3) to a preset height via a first driving member (41); The first adsorption member (421) is controlled to release the movable sleeve (43), so that the counterweight assembly (3) freely falls along the vertical direction to the prefabricated plate (100) along with the movable sleeve (43).

Images