Test apparatus for precast wall panels

Abstract

This invention relates to a testing apparatus for precast wall panels, comprising a frame for mounting a testing mechanism, a transport mechanism for positioning and moving precast wall panels, and a flipping mechanism for flipping the transport mechanism carrying the precast wall panels onto the frame. The transport mechanism includes a movable support for placing the precast wall panels and a positioning component mounted on the movable support for positioning the precast wall panels. The frame has a rotating shaft, and the movable support has a quick-connect component that can quickly connect to the rotating shaft when it approaches it. The movable support is rotatably connected to the rotating shaft on the frame via the quick-connect component. The flipping mechanism drives the movable support and the precast wall panels, fixed within the movable support by the positioning component, to flip onto the frame. The testing mechanism mounted on the frame tests the performance of the wall panels by acting on the flipped precast wall panels. This invention is ingeniously structured and safe and practical.

Description

Technical Field

[0001] This invention relates to the field of performance testing of precast wall panels, and particularly to a testing device for precast wall panels. Background Technology

[0002] Reinforced concrete slab components, also known as wall panels, are prefabricated concrete panels manufactured in prefabrication plants or on construction sites for use in building assembly. Using prefabricated concrete wall panels to construct prefabricated large-panel buildings can improve the degree of factory and mechanized construction, reduce on-site wet work, save on-site labor, overcome seasonal influences, and shorten the construction cycle.

[0003] After prefabricated wall panels are manufactured, they need to undergo a series of tests to ensure that they meet the requirements for use. These tests include dimensional and geometric testing, bending strength testing, impact strength testing, compressive strength testing, water absorption performance testing, acoustic performance testing, and thermal performance testing. Only after all tests are passed can they be put into the construction site for splicing and installation. When testing the performance of prefabricated wall panels, depending on the requirements of the test, the wall panels need to be erected to simulate the conditions of the actual use site before applying force to the test, in order to ensure the authenticity and accuracy of the test data.

[0004] In existing technologies, the handling or flipping of precast wall panels to upright is generally done manually in conjunction with overhead cranes. However, this method carries risks such as the breakage of the lifting components during the flipping process, which could cause the precast wall panels to fall and be damaged. It also includes the damage to the site environment or testing facilities during the fall of the precast wall panels, as well as the threats and injuries to the personal safety of the operators during the fall. Therefore, there is an urgent need to develop a testing device that can automatically flip the wall panels. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for precast wall panels. It has an ingenious structure and can safely and efficiently flip and test precast wall panels. It is safe, stable, practical and convenient.

[0006] The technical solution to achieve the purpose of this invention is as follows: This invention has a frame for installing a testing mechanism, a transport mechanism for positioning and transporting precast wall panels, and a flipping mechanism for flipping the transport mechanism with precast wall panels onto the frame; the transport mechanism includes a movable bracket for placing the precast wall panels, and a positioning component disposed on the movable bracket for positioning the precast wall panels; the frame is provided with a rotating shaft, and the movable bracket is provided with a quick-connect component that can quickly connect with the rotating shaft when it approaches the rotating shaft; the movable bracket is rotatably connected to the rotating shaft on the frame through the quick-connect component; the flipping mechanism flips the movable bracket and the precast wall panels fixed in the movable bracket by the positioning component onto the frame by driving the movable bracket; the testing mechanism installed on the frame tests the performance of the wall panels by acting on the flipped precast wall panels on the frame.

[0007] Furthermore, the aforementioned movable support is provided with a placement slot for placing precast wall panels. The positioning assembly includes multiple lifting cylinders fixed in the placement slot, a lifting support that is raised and lowered in the placement slot under the simultaneous drive of each lifting cylinder, and multiple limiting rod groups mounted on the movable support for pressing and limiting the precast wall panels. Each limiting rod group includes a first limiting rod and a second limiting rod arranged opposite to each other. Each first limiting rod and second limiting rod is rotatably connected to the movable support, and the rotation axes of the first limiting rod and the second limiting rod are perpendicular to the movable support. The first limiting rod is provided with a first step, and the first step is provided with a limiting groove. The second limiting rod is provided with a second step corresponding to the first step, and the second step is provided with a limiting protrusion corresponding to the limiting groove. After rotation, the first limiting rod and the second limiting rod are fixed by the insertion of the first step and the second step, and by the snap-fit ​​of the limiting groove and the limiting protrusion, and are arranged collinearly. The precast wall panel placed in the groove is fixed on the movable support by the lifting of the lifting bracket and the limiting of the collinear first limiting rod and the second limiting rod.

[0008] Furthermore, the aforementioned movable support is provided with multiple limit block groups corresponding to each limit rod group. The limit block group includes a first limit block corresponding to each first limit rod and a second limit block corresponding to each second limit rod. Both the first and second limit blocks are provided with limit rotation grooves. Each limit rotation groove is provided with a first opening and a second opening that are connected and perpendicularly arranged. The limit rotation grooves on the first and second limit blocks are arranged opposite to each other. The first opening of the limit rotation groove on the first limit block and the first opening of the limit rotation groove on the second limit block are arranged opposite to each other. The second opening of each limit rotation groove is respectively provided on the surface of each first and second limit block away from the rotation axis. The first limit rod is rotatably connected to the first limit block through cooperation with the limit rotation groove, and the second limit rod is rotatably connected to the second limit block through cooperation with the limit rotation groove.

[0009] Furthermore, the bottom of the aforementioned movable support is fixedly equipped with multiple universal rollers, and each universal roller has a slot with a "V" shaped cross section. The frame is equipped with parallel guide rails, and each movable support moves closer to the frame through the cooperation of the slots on each universal roller and the guide rails, as well as the guidance of the guide rails.

[0010] Furthermore, the aforementioned quick-connect assembly includes multiple connecting blocks fixed on a movable bracket and pressure blocks rotatably connected to the connecting blocks. Each connecting block is provided with a mounting groove and a first arc-shaped pressure groove for pressing the rotating shaft. The first arc-shaped pressure groove communicates with the mounting groove. The opposing pressure blocks are rotatably connected to the upper and lower groove surfaces of the mounting groove, respectively. Each pressure block is provided with a second arc-shaped pressure groove. Each second arc-shaped pressure groove can form a connecting groove with the first arc-shaped pressure groove after rotation, allowing the rotating shaft to rotate. Parallel to the rotating shaft, the upper and lower groove surfaces of the mounting groove are fixedly provided with... Each rotating rod has a connecting through hole on each pressing block, and a torsion spring is fitted on each rotating rod. The two ends of the torsion spring are fixedly connected to the inner wall of the rotating rod and the connecting through hole, respectively. Each pressing block is rotatably connected to the connecting block through the connecting through hole of the rotating rod. Each second arc-shaped pressing groove rotates away from the first arc-shaped pressing groove due to the continuous force of the torsion spring. The second arc-shaped pressing groove on each pressing block contacts and presses against the rotating shaft through the continuous movement of the moving bracket. Each pressing block rotates through the continuous movement of the moving bracket and the pressing between each second arc-shaped pressing groove and the rotating shaft, and guides the rotating shaft into the connecting rotating shaft.

[0011] Each connecting block is equipped with a locking assembly that locks the pressure blocks located on the lower groove surface of the mounting slot after rotation. The lower groove surface of the mounting slot has a vertically arranged lifting groove. The bottom of the lifting groove has a bottom through groove communicating with the lifting groove. The inner diameter of the bottom through groove is smaller than the inner diameter of the lifting groove. The locking assembly includes a locking rod that is lifted and connected in the lifting groove, a bottom connecting rod that is fixed to the bottom of the locking rod and lifted and connected in the bottom through groove, and a locking block that is fixed on the bottom connecting rod and located outside the connecting block. The pressure block on the lower groove surface has a locking hole into which the locking rod can be inserted. A return spring is sleeved on the locking rod. The two ends of the return spring are fixedly connected to the lifting groove and the locking rod, respectively. The length of the bottom connecting rod is greater than the length of the bottom through groove. Each locking rod extends into the corresponding locking hole through the continuous force of the return spring and fixes the corresponding pressure block. The quick-connect assembly also includes a linkage plate that connects each locking block. Each locking block is fixed on the linkage plate. A foot pedal is fixed on the side of the linkage plate away from the moving bracket.

[0012] Furthermore, the aforementioned frame is also provided with a support shaft arranged parallel to the rotating shaft, and the movable bracket is also provided with multiple support blocks. Each support block and each connecting block are located on the same surface of the movable bracket. Each support block is provided with a support arc surface. Each support arc surface presses against the support shaft behind the movable bracket and is coaxially arranged with the support shaft. Each pressing block is fixed against the support shaft by the rotation of the movable bracket and the cooperation between each support arc surface and the support shaft.

[0013] Furthermore, the aforementioned flipping mechanism includes a flipping assembly for driving the movable support to flip. The flipping assembly includes hydraulic cylinders fixed to the frame, connecting pins fixed to the telescopic ends of each hydraulic cylinder, and rotating rods fixed to the movable support. One end of each hydraulic cylinder is rotatably connected to the inner wall of the frame, and each rotating rod is rotatably connected to the side wall of the movable support. The rotating rod is provided with a connecting hole through which the connecting pin can pass. The upper end of each rotating rod connected to the movable support is rotatably connected through the cooperation of the connecting pin and the connecting hole. The movable support, which is rotatably connected to the rotating shaft through the quick-connect assembly, flips from a horizontal state to a vertical state through the drive of each hydraulic cylinder and the rotatable connection between the rotating rod and the telescopic end of the hydraulic rod.

[0014] Furthermore, the aforementioned flipping mechanism also includes an auxiliary component for assisting the movable support in flipping. The auxiliary component includes a first auxiliary rod group and a second auxiliary rod group disposed opposite to each other on the frame and disposed opposite to each other on the movable support. The first auxiliary rod group includes two first auxiliary rods disposed opposite to each other on the inner wall of the frame. Each first auxiliary rod is rotatably connected to the inner wall of the frame. An auxiliary pin is fixedly provided at the end of each first auxiliary rod that is not connected to the frame. The second auxiliary rod group includes two second auxiliary rods disposed opposite to each other on the side wall of the movable support. Each second auxiliary rod is rotatably connected to the movable support. An auxiliary pin hole is provided at the end of each second auxiliary rod that is connected to the movable support. Each first auxiliary rod and the corresponding second auxiliary rod are rotatably connected by the insertion and engagement of the auxiliary pin and the auxiliary pin hole.

[0015] Furthermore, both sides of the aforementioned movable support are provided with a first support plate that can support the rotating rod when it is not rotating, and a second support plate that can support the second auxiliary rod when it is not rotating.

[0016] Furthermore, both sides of the aforementioned frame are provided with reinforcing plates that can support the frame. The frame is also provided with multiple locking block assemblies. Each locking block assembly includes a first locking block and a second locking block that are opposite to and fixedly mounted on the frame. Both the first locking block and the second locking block are provided with locking grooves. The locking grooves are provided with a third opening and a fourth opening that are vertically connected. The third openings on the locking grooves of the first locking block and the second locking block are opposite to each other. Each fourth opening is located on the surface of the first locking block and the second locking block away from the rotating shaft. Each locking groove contains a locking plate that is rotatably mounted. After each locking plate is rotated, it presses against the flipped movable bracket.

[0017] The present invention has the following positive effects: (1) The present invention sets the handling mechanism as a combination of a movable support and a positioning component. The movable support can handle the prefabricated wall panels. The movable support can move in all directions through casters, which greatly avoids the threat to the personal safety of operators during the handling of prefabricated wall panels. The positioning component positions and fixes the prefabricated wall panels, which on the one hand can ensure the stability of the prefabricated wall panels during the handling process and avoid damage caused by shaking or bumping during the handling process. On the other hand, it ensures the stability of the prefabricated wall panels during the overall flipping process and avoids damage caused by shaking or bumping during the flipping process. In the event of movement or collision with the moving support, the moving support is connected via a pivot on the quick-connect component frame. A flipping mechanism drives the moving support to flip, simultaneously flipping the precast wall panels inside. This effectively solves the threats to operators and the site environment posed by manual labor and overhead cranes in the existing technology for handling and flipping precast wall panels. The automated flipping method greatly improves the flipping efficiency of the precast wall panels, ensuring both operator safety and the stability of the precast wall panels. It also lays the foundation for accurate test data from subsequent testing institutions. The mechanism is ingenious, convenient, and practical.

[0018] (2) The invention uses multiple lifting cylinders to drive the lifting bracket to lift and raise the precast wall panel. At the same time, multiple limit rods are set on the moving bracket to limit the rise of the precast wall panel. When no precast wall panel is placed in the moving bracket, the first limit rod and the second limit rod are in the open state. After the precast wall panel is placed in the placement slot, the first limit rod and the second limit rod start to rotate. When the first limit rod and the second limit rod are collinear, the step surface of the first step and the step surface of the second step fit together. At the same time, the limiting protrusion is inserted into the corresponding limiting groove. This design ensures that the first and second limiting rods can mutually restrict each other's rotation during collinear rotation. Simultaneously, the collinear first and second limiting rods effectively limit the upward movement of the precast wall panel, thus ensuring its stability during handling or flipping. Furthermore, the force direction applied to the precast wall panel is perpendicular to the rotation direction of the first and second limiting rods, as well as the force direction of the limiting protrusion and limiting groove. Therefore, the first and second limiting rods will not detach due to the force applied to the precast wall panel, further ensuring its safety and stability.

[0019] (3) This invention sets a first limiting block and a second limiting block, both of which are provided with limiting grooves. Each of the first and second limiting blocks has a first opening and a second opening that are perpendicular and interconnected, thereby limiting the rotation of the first and second limiting rods to a range of 0° to 90°. This avoids excessive rotation of the first and second limiting rods while ensuring their mutual restraint, thus achieving a limiting effect on the precast wall panel. The opposing arrangement of the first openings ensures that the first limiting rod and... The second limiting rod can rotate accordingly. In addition, setting each second opening on the surface of the principle shaft is to ensure that after the moving support is erected, the first and second limiting rods will not fall due to their own weight. This ensures that the first and second limiting rods can only be collinear by rotating in the same direction, and can only be opened when the moving support returns to the horizontal state and is reset by rotation. This also ensures the safety and stability of the precast wall panel in the upright state, further ensuring the safety of the test site and on-site operators, and is convenient and practical.

[0020] (4) By setting multiple universal rollers, the present invention facilitates the operation of operators to transport precast wall panels from other workstations to the frame. When the panels are transported close to the frame, the position of the moving bracket and the precast wall panel is first corrected by the cooperation of the slot and the guide rail. Then, the moving bracket and the precast wall panel are slowly moved closer to the frame by the guide rail. This ensures that the moving bracket and the precast wall panel on the moving bracket can be transferred to the frame from any different location, rather than only from one direction. The correction and guidance of the slot by the guide rail also ensures that the precast wall panel and the moving bracket can be in a vertical state after being flipped and can smoothly enter the frame without any bumps. It has strong adjustability and applicability, and is safe and efficient.

[0021] (5) In this invention, a first arc-shaped pressing groove is provided on the connecting block, and a second arc-shaped pressing groove is provided on each pressing block. The first arc-shaped pressing groove and each second arc-shaped pressing groove form a connecting groove that allows the rotating shaft to enter and rotate. Before the connecting groove is formed, each second arc-shaped pressing groove faces away from the first arc-shaped pressing groove and faces the rotating shaft under the continuous action of the torsion spring. During the movement of the moving bracket, each second arc-shaped pressing groove begins to contact the rotating shaft. During the continued movement of the moving bracket, each pressing block begins to rotate slowly, while guiding the rotating shaft into the mounting groove. At the same time, when each second arc-shaped pressing groove and the first arc-shaped pressing groove form a connecting groove, the rotating shaft is also located therein. At the same time, the locking rod enters the locking hole under the action of the return spring to lock the pressing block, preventing the pressing block from rotating under the action of the torsion spring. The length of the bottom connecting rod is set to be long. The length of the bottom through groove provides sufficient locking length for the locking rod, ensuring the firmness of the connection between the pressure block and the connecting block, and thus ensuring the stability of the rotating shaft within the connecting groove. This prevents the rotating shaft from coming off during use. A foot pedal is installed on the linkage plate. After the test is completed and the moving bracket and prefabricated wall panel are lowered and unlocked, the operator can step on the foot pedal to lower the linkage plate and locking block, thereby causing the locking rod to disengage from the pressure block. After unlocking, the pressure block pushes out the rotating shaft through the reverse movement of the moving bracket and the continuous force of the torsion spring, thus achieving the disengagement of the moving bracket and the frame. The quick-connect assembly and locking assembly enable the rapid assembly and connection of the moving bracket and the frame, ensuring the stability of the connection between the rotating shaft and the moving bracket. At the same time, they also ensure the rapid disengagement of the moving bracket and the frame after the test. The structure is ingenious, convenient, and practical.

[0022] (6) By setting a support shaft on the frame and setting the support shaft and the first rotating shaft coaxially, the present invention ensures the levelness of the moving bracket after rotation. After rotation, the support block's support arc surface forms a coaxiality with the support shaft, ensuring the stability of the connection between the support block and the support shaft, further ensuring the stability of the moving bracket after rotation, making it safe and practical.

[0023] (7) By setting the flipping mechanism as a combination of a hydraulic cylinder and a rotating rod, and the connecting pin at the telescopic end of the hydraulic cylinder and the connecting hole on the rotating rod, the hydraulic cylinder and the rotating rod can be quickly installed or disassembled. At the same time, when the hydraulic cylinder is driven, it can stably drive the moving bracket and the precast wall panel inside the moving bracket to flip. By using a semi-automatic method to replace the cooperation of manual labor and the crane, the flipping efficiency of the precast wall panel is greatly improved and the stability of the precast wall panel during the flipping process is ensured. On the other hand, it also greatly reduces the threat to the site environment and on-site personnel during the flipping process of the precast wall panel, thereby greatly improving the safety of the precast wall panel during flipping. It is efficient and practical.

[0024] (8) By setting up auxiliary components, each first auxiliary rod and the corresponding second auxiliary rod can be quickly installed or disassembled through the insertion and cooperation of auxiliary pins and auxiliary pin holes. The first auxiliary rod and the second auxiliary rod can be rotated through the insertion and cooperation of auxiliary pins and auxiliary pin holes, thereby providing auxiliary support for the mobile support when it is flipped. In addition to providing auxiliary support, the auxiliary components also further ensure the safety of the mobile support when it is flipped, further ensuring the safety of the experimental site and the operators. It is convenient and practical.

[0025] (9) The present invention supports the rotating rod by setting a first support plate and the second support plate to support the second auxiliary rod, so as to avoid the rotating rod and the second auxiliary rod being dragged or collided on the bottom surface when not in use, which would affect the use of the rotating rod and the second auxiliary rod, as well as the normal movement of the moving bracket. The structure is ingenious, convenient and practical.

[0026] (10) The present invention strengthens the stability of the frame by setting a reinforcing plate on the frame and limits the rotation angle of the locking plate to within 90°. This can protect the moving bracket after it is flipped and prevent the moving bracket from rotating or shaking. At the same time, it ensures the locking after the locking plate moves in one direction and the unlocking after rotating in one direction. This effectively avoids the situation where the locking plate rotates too much and cannot lock. It is safe and practical. Attached Figure Description

[0027] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0028] Figure 1 This is a schematic diagram of the overall structure of the test device for prefabricated wall panels in this invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of the frame in this invention;

[0030] Figure 3This is a side view of the overall structure of the frame in this invention;

[0031] Figure 4 This is a schematic diagram of the overall structure of the movable support in this invention;

[0032] Figure 5 This is a schematic diagram of the overall structure of the first limiting rod and the second limiting rod after rotational connection in this invention;

[0033] Figure 6 This is a schematic diagram of the overall structure of the first limiting rod in this invention;

[0034] Figure 7 This is a schematic diagram of the overall structure of the second limiting rod in this invention;

[0035] Figure 8 This is a schematic diagram of the overall structure of the first limiting block in this invention;

[0036] Figure 9 This is a schematic diagram of the overall structure of the second limiting block in this invention;

[0037] Figure 10 This is a schematic diagram of the overall structure of the side pressing component in this invention;

[0038] Figure 11 This is a schematic diagram of the overall structure of the quick-connect assembly in this invention;

[0039] Figure 12 This is a side sectional view of the quick-connect assembly in this invention;

[0040] Figure 13 for Figure 12 Enlarged view of point A in the middle;

[0041] Figure 14 for Figure 12 Enlarged view of point B in the middle;

[0042] Figure 15 This is a schematic diagram of the overall structure of the support block in this invention;

[0043] Figure 16 This is a schematic diagram of the overall structure of the first locking block and the locking plate in this invention;

[0044] Figure 17 This is a schematic diagram of the overall structure of the second locking block and the locking plate in this invention;

[0045] Figure 18 This is a schematic diagram of the overall structure of the locking plate in this invention. Detailed Implementation

[0046] See Figures 1 to 18This invention relates to a testing apparatus for precast wall panels, comprising a frame 1 for mounting a testing mechanism, a transport mechanism for positioning and transporting precast wall panels, and a flipping mechanism for flipping the transport mechanism carrying the precast wall panels onto the frame 1. The transport mechanism includes a movable support 2 for placing the precast wall panels and a positioning component 3 mounted on the movable support 2 for positioning the precast wall panels. The frame 1 is provided with a rotating shaft 16, and the movable support 2 is provided with a quick-connect component 7 that can quickly connect to the rotating shaft 16 when it approaches the rotating shaft 16. The movable support 2 is rotatably connected to the rotating shaft 16 on the frame 1 through the quick-connect component 7. The flipping mechanism flips the movable support 2 and the precast wall panels fixed in the movable support 2 by the positioning component 3 onto the frame 1 by driving the movable support 2. The testing mechanism mounted on the frame 1 tests the performance of the wall panels by acting on the flipped precast wall panels on the frame 1.

[0047] The movable support 2 has a placement slot for placing precast wall panels. The positioning assembly 3 includes multiple lifting cylinders 31 fixed in the placement slot, a lifting support 32 that is lifted and lowered in the placement slot under the simultaneous drive of each lifting cylinder 31, and multiple limiting rod groups 33 set on the movable support 2 for pressing and limiting the precast wall panels. The limiting rod group 33 includes a first limiting rod 331 and a second limiting rod 332 arranged opposite to each other. Each first limiting rod 331 and second limiting rod 332 is rotatably connected to the movable support 2, and the rotation axes of the first limiting rod 331 and the second limiting rod 332 are both perpendicular to the movable support 2. The first limiting rod 331 is provided with... There is a first step 335, on which a limiting groove 336 is provided. The second limiting rod 332 is provided with a second step 337 corresponding to the first step 335. The second step 337 is provided with a limiting protrusion 338 that can correspond to the limiting groove 336. After rotation, the first limiting rod 331 and the second limiting rod 332 are fixed by the insertion of the first step 335 and the second step 337, and by the snap-fit ​​of the limiting groove 336 and the limiting protrusion 338, and are arranged collinearly. The precast wall panel placed in the groove is fixed on the movable bracket 2 by the lifting bracket 32 ​​and the limiting of the collinear first limiting rod 331 and the second limiting rod 332.

[0048] The movable support 2 is provided with a plurality of limiting block groups corresponding to each limiting rod group 33. Each limiting block group includes a first limiting block 333 corresponding to each first limiting rod 331 and a second limiting block 334 corresponding to each second limiting rod 332. Both the first limiting block 333 and the second limiting block 334 are provided with limiting grooves 339. Each limiting groove 339 is provided with a first opening and a second opening that are connected and perpendicularly oriented. The limiting grooves 339 on the first limiting block 333 and the second limiting block 334 are connected... In the configuration, the first opening of the upper limit groove 339 of the first limit block 333 and the first opening of the upper limit groove 339 of the second limit block 334 are arranged opposite to each other. The second opening of each limit groove 339 is respectively arranged on the surface away from the rotating shaft 16 of each first limit block 333 and second limit block 334. The first limit rod 331 is rotatably connected to the first limit block 333 through cooperation with the limit groove 339, and the second limit rod 332 is rotatably connected to the second limit block 334 through cooperation with the limit groove 339.

[0049] The inner wall of the movable support 2, except for the surface near the pivot 16, is equipped with side pressing components 24 for pressing and positioning the sides of the precast wall panels. Each side pressing component 24 includes a side hydraulic cylinder 241 fixed to the movable support 2 and a positioning plate 242 fixed to the telescopic end of each side hydraulic cylinder 241. Each positioning plate 242, driven by each side hydraulic cylinder 241, presses and positions the precast wall panel against the inner wall of the movable support 2 near the pivot 16. This design ensures that no gaps appear between the precast wall panel and the movable support 2 during the rotation process, preventing the precast wall panel from sinking due to its own weight. Furthermore, this pre-positioning lays the foundation for accurate experimental data later.

[0050] The bottom of the movable support 2 is fixedly provided with multiple universal rollers 21, and each universal roller 21 is provided with a slot with a "V" shaped cross section. The frame 1 is provided with parallel guide rails 12. Each movable support 2 moves closer to the frame 1 through the cooperation of the slots on each universal roller 21 and the guide rails 12, and the guidance of the guide rails 12.

[0051] The quick-connect assembly 7 includes multiple connecting blocks 71 fixed on the movable bracket 2 and pressing blocks 72 rotatably connected to the connecting blocks 71. Each connecting block 71 is provided with a mounting groove and a first arc-shaped pressing groove 711 for pressing the rotating shaft 16. The first arc-shaped pressing groove 711 communicates with the mounting groove. The pressing blocks 72 are rotatably connected to the upper and lower groove surfaces of the mounting groove, respectively. Each pressing block 72 is provided with a second arc-shaped pressing groove 721. Each second arc-shaped pressing groove 721 can form a connecting groove for the rotating shaft 16 to rotate with the first arc-shaped pressing groove 711 after rotation. Rotating rods 722 parallel to the rotating shaft 16 are fixedly provided on the upper and lower groove surfaces of the mounting groove. Each pressing block 72 is provided with a connecting through hole. Each rotating rod 722 is fitted with a torsion spring 723. The two ends of the torsion spring 723 are fixedly connected to the rotating rod 722 and the inner wall of the connecting through hole, respectively. Each pressing block 72 is rotatably connected to the connecting block 71 through the cooperation of the connecting through hole of the rotating rod 722. Each second arc-shaped pressing groove 721 rotates away from the first arc-shaped pressing groove 711 by the continuous force of the torsion spring 723. The second arc-shaped pressing groove 721 on each pressing block 72 contacts and presses against the rotating shaft 16 by the continuous movement of the moving bracket 2. Each pressing block 72 rotates by the continuous movement of the moving bracket 2 and the pressing of each second arc-shaped pressing groove 721 against the rotating shaft 16, and guides the rotating shaft 16 into the connecting rotating shaft 16. After the rotating shaft 16 is completely inserted into the connecting rotating groove, the moving bracket 2 stops moving.

[0052] Each connecting block 71 is equipped with a locking assembly that locks the pressure block 72 located on the lower groove surface of the mounting slot after rotation. The lower groove surface of the mounting slot has a vertically arranged lifting recess 712. The bottom of the lifting recess 712 has a bottom through groove 713 communicating with it. The inner diameter of the bottom through groove 713 is smaller than the inner diameter of the lifting recess 712. The locking assembly includes a locking rod 73 that is vertically connected to the lifting recess 712, a bottom connecting rod 74 fixed to the bottom of the locking rod 73 and vertically connected to the bottom through groove 713, and a locking block 75 fixed to the bottom connecting rod 74 and located outside the connecting block 71. The upper pressure block 72 is provided with a locking hole 724 for the locking rod 73 to be inserted. A return spring 731 is sleeved on the locking rod 73. The two ends of the return spring 731 are fixedly connected to the lifting groove 712 and the locking rod 73 respectively. The length of the bottom connecting rod 74 is greater than the length of the bottom through groove 713. Each locking rod 73 extends into the corresponding locking hole 724 through the continuous force of the return spring 731 and fixes the corresponding pressure block 72. The quick-connect assembly 7 also includes a linkage plate 76 connecting each locking block 75. Each locking block 75 is fixed on the linkage plate 76. A foot pedal 77 is fixed on the side of the linkage plate 76 away from the moving bracket 2.

[0053] The quick-connect component 7 in this invention can also be configured as a combination of two arc bodies, one of which is fixed on the movable bracket 2, and the other is rotatably connected to the first arc body. After the arc body not connected to the movable bracket 2 rotates, it forms a slot with the first arc body for the rotating shaft 16 to be inserted. After the rotating shaft 16 enters the slot, the arc body not connected to the movable bracket 2 rotates and presses against the rotating shaft 16, and is fixed to the first arc body by a locking member.

[0054] The frame 1 is also provided with a support shaft 17 arranged parallel to the rotating shaft 16. The movable bracket 2 is also provided with a plurality of support blocks 25. Each support block 25 and each connecting block 71 are located on the same surface of the movable bracket 2. Each support block 25 is provided with a support arc surface 251. Each support arc surface 251 is pressed against the support shaft 17 behind the movable bracket 2 and is coaxially arranged with the support shaft 17. Each pressing block 72 is fixed against the support shaft 17 by the rotation of the movable bracket 2 and the cooperation between each support arc surface 251 and the support shaft 17.

[0055] The flipping mechanism includes a flipping assembly 4 for driving the movable support 2 to flip. The flipping assembly 4 includes hydraulic cylinders 41 fixed on the frame 1, connecting pins 42 fixed on the telescopic ends of each hydraulic cylinder 41, and rotating rods 43 fixed on the movable support 2. One end of each hydraulic cylinder 41 is rotatably connected to the inner wall of the frame 1, and each rotating rod 43 is rotatably connected to the side wall of the movable support 2. The rotating rod 43 is provided with connecting holes 44 through which the connecting pins 42 can pass. The end of each rotating rod 43 connected to the movable support 2 is rotatably connected by the connecting pins 42 and the connecting holes 44. The movable support 2, which is rotatably connected to the rotating shaft 16 through the quick-connect assembly 7, flips from a horizontal state to a vertical state through the driving of each hydraulic cylinder 41 and the rotatable connection between the rotating rods 43 and the telescopic ends of the hydraulic cylinders.

[0056] The flipping mechanism further includes an auxiliary component 5 for assisting the movable support 2 in flipping. The auxiliary component 5 includes a first auxiliary rod group and a second auxiliary rod group that are relatively disposed on the frame 1 and relatively disposed on the movable support 2. The first auxiliary rod group includes two first auxiliary rods 51 that are relatively disposed on the inner wall of the frame 1. Each first auxiliary rod 51 is rotatably connected to the inner wall of the frame 1. An auxiliary pin 53 is fixedly provided at the end of each first auxiliary rod 51 that is not connected to the frame 1. The second auxiliary rod group includes two second auxiliary rods 52 that are relatively disposed on the side wall of the movable support 2. Each second auxiliary rod 52 is rotatably connected to the movable support 2. An auxiliary pin hole 54 is provided at the end of each second auxiliary rod 52 that is connected to the movable support 2. Each first auxiliary rod 51 and the corresponding second auxiliary rod 52 are rotatably connected by the insertion and engagement of the auxiliary pin 53 and the auxiliary pin hole 54.

[0057] The movable support 2 is provided with a first support plate 22 on both sides to support the rotating rod 43 when it is not rotating, and a second support plate 23 to support the second auxiliary rod 52 when it is not rotating.

[0058] Both sides of the frame 1 are provided with reinforcing plates 11 to support the frame 1. The frame 1 is also provided with multiple locking block groups. The locking block groups include a first locking block 13 and a second locking block 14 that are relatively fixedly arranged on the frame 1. The first locking block 13 and the second locking block 14 are provided with locking grooves. The locking grooves are provided with a third opening and a fourth opening that are vertically connected. The third openings on the locking grooves of the first locking block 13 and the second locking block are arranged opposite to each other. Each fourth opening is respectively arranged on the surface of the first locking block 13 and the second locking block 14 away from the rotating shaft 16. Each locking groove is rotatably arranged with a locking plate 15. After each locking plate 15 is rotated, it presses against the flipped movable bracket 2.

[0059] The testing mechanism can be configured as an impact mechanism 6 for testing the impact resistance of precast wall panels. The impact mechanism 6 includes an extension bracket 61 fixed on the surface of the frame 1 facing away from the guide rail 12, an auxiliary guide wheel 62 fixed on the extension bracket 61, a first pull rope 64, a second pull rope 65, and a hammer bag 63. One end of the first pull rope 64 is fixed to the extension bracket 61, and the other end of the first pull rope 64 is fixed to the hammer bag 63. One end of the second pull rope 65 is fixed to the hammer bag 63. The other end of the second pull rope 65 passes over the auxiliary guide wheel 62, and a handle 66 for the operator to grip is fixed on the end of the second pull rope 65 that passes over the auxiliary guide wheel 62. After the operator grabs the handle 66, he pulls it down, so that the hammer bag 63 rises to a specified height along an arc trajectory with the first pull rope 64 as the radius. Then, he releases the second pull, so that the hammer bag 63 falls and begins to fall along an arc trajectory with the first pull rope 64 as the radius, and hammers the precast wall panel to test the impact resistance of the precast wall panel.

[0060] Working principle of the invention: During use, the movable support 2 first moves to the precast wall panel preparation location. After the precast wall panel is prepared, the operator directly places it into the movable support 2. The lifting cylinder 31 inside the movable support 2 first drives the lifting support 32 to lift and receive the prepared precast wall panel. After the precast wall panel is placed on the receiving support, the lifting cylinder 31 drives the lifting support 32 to descend until the entire precast wall panel is within the movable support 2. Then, the operator drives the side hydraulic cylinder 241, which in turn drives the positioning plate 242 to position the precast wall panel. After positioning, the positioning plate 242 is released, and simultaneously the operator rotates the first limit rod 331 and... The second limiting rod 332 is fixedly connected to the first limiting rod 331 and the second limiting rod 332 through the cooperation of the first step 335 and the second step 337, as well as the cooperation of the limiting groove 336 and the limiting protrusion 338. Because the rotation stroke of the first limiting rod 331 and the second limiting rod 332 is limited, they can only reciprocate within the limiting angle. After the first limiting rod 331 and the second limiting rod 332 rotate to lock each other, the lifting cylinder 31 drives the lifting bracket 32 ​​to rise, and the upper surface of the precast wall panel directly presses against the first limiting rod 331 and the second limiting rod 332. Then the side hydraulic cylinder 241 drives the positioning plate 242 to position the precast wall panel again.

[0061] After positioning, the operator can begin to push the movable support 2 towards the frame 1. During this slow movement, the slots on each universal roller 21 connect with their respective guide rails 12, causing the movable support 2 to face the frame 1 and proceed along the extension path of the guide rails 12. As the movable support 2 approaches the frame 1, the second arc-shaped pressing grooves 721 on each pressing block 72 meet the rotating shaft 16 and slowly come into contact with it. With the continued movement of the movable support 2, the rotating shaft 16 gradually overcomes the torque of the torsion springs 723 on each pressing groove and connects with the first arc-shaped pressing groove 711 on the connecting block 71. As the rotating shaft 16 approaches the first arc-shaped pressing groove 711, the rotating shaft 16 also causes each pressing block 72 to start rotating. After the rotating shaft 16 is in contact with the inner wall of the first arc-shaped pressing groove 711, each second arc-shaped pressing groove 721 on each pressing block 72 and the first arc-shaped pressing groove 711 form a connecting groove. The rotating shaft 16 can rotate in this connecting groove. After the rotating shaft 16 is fully inserted into the connecting groove, the locking rod 73 in each lifting groove 712 begins to rise under the action of the return spring 731 and inserts into the corresponding locking hole 724 to fix the corresponding pressing block 72 on the connecting block 71, thereby achieving self-locking.

[0062] After the test is completed and the movable bracket 2 is rotated back from the frame 1, the movable bracket 2 needs to be disengaged from the rotating shaft 16. When unlocking is required, the operator only needs to step on the foot pedal 77, and each locking rod 73 can be supported from the locking hole 724. During the process of the movable bracket 2 disengaging from the rotating shaft 16, each pressing block 72 can push the rotating shaft 16 outward through the continuous force of the torsion spring 723, thereby achieving smooth unlocking.

[0063] After the rotating shaft 16 is connected to the movable bracket 2, the operator can insert the connecting pins 42 on each hydraulic cylinder 41 into the connecting holes 44 on the rotating rod 43 to achieve a rotatable connection. To prevent the connecting pins 42 from separating from the connecting holes 44 during use, a threaded portion can be provided on one end of the connecting pin 42 that passes through the connecting hole 44, and a locking nut can be fitted on the threaded portion to effectively prevent the connecting pins 42 from separating from the connecting holes 44 during use. At the same time, the auxiliary pin shaft 53 on the first auxiliary rod 51 and the auxiliary pin hole 54 on the second auxiliary rod 52 are connected in a mating manner. Similarly, to prevent the auxiliary pin hole 54 and the auxiliary pin shaft 53 from separating, a locking nut can be fitted on the auxiliary pin shaft 53. A threaded hole can also be provided on hole 54, and a locking bolt can be provided on the threaded hole to prevent the auxiliary pin 53 from disengaging from the auxiliary pin hole 54. After the connection is completed, the operator can start driving the hydraulic cylinder 41. As the hydraulic cylinder 41 slowly retracts, the moving bracket 2 and the precast wall panel inside the moving bracket 2 begin to slowly rise. When the moving bracket 2 flips from a horizontal state to a vertical state, the hydraulic cylinder 41 stops driving, and at this time the support block 25 on the moving bracket 2 presses against the pressing shaft through the support arc surface 251, thereby achieving the overall support and balance of the moving bracket 2. After the precast wall panel is also in a vertical state, the hydraulic cylinders 241 on each side drive the positioning plate 242 to engage with the precast wall panel. The panel is detached to avoid and prevent pressure from affecting subsequent test data. After the movable support 2 is vertical, each operator flips the locking plate 15 to fix the movable support 2 to the frame 1, preventing the movable support 2 from shaking during use. During the impact test, the operator can pre-set the weight of the rear hammer bag 63 and the lifting height of the hammer bag 63. The operator pulls the second pull rope 65 to raise the hammer bag 63, and then releases the second pull rope 65, and the hammer bag 63 hammers the precast wall panel. The damage and force data of the precast wall panel are compared with the standard impact coefficient to determine whether the precast wall panel is qualified. After the test is completed, the side... Hydraulic cylinder 241 drives positioning plate 242 to press against the precast wall panel again. Then, hydraulic cylinder 41 drives moving bracket 2 to rotate to a horizontal position. Then, each connecting part is removed in sequence, and moving bracket 2 is separated from frame 1. Then, the precast wall panel after the test is completed is transferred to the designated unloading area for unloading. This invention effectively solves the harm to the test environment and test personnel caused by the lifting of precast wall panels by manual labor and crane in the prior art. It improves the efficiency of precast wall panel flipping while ensuring its stability. In addition, it greatly reduces the harm to the test environment and test personnel. The structure is ingenious, safe, practical, efficient and convenient.

[0064] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for precast wall panels, characterized in that: The device includes a frame for mounting a testing mechanism, a transport mechanism for positioning and transporting precast wall panels, and a flipping mechanism for flipping the transport mechanism with precast wall panels onto the frame. The transport mechanism includes a movable bracket for placing the precast wall panels and a positioning component mounted on the movable bracket for positioning the precast wall panels. The frame is equipped with a rotating shaft, and the movable bracket is equipped with a quick-connect component that can quickly connect to the rotating shaft when it approaches the rotating shaft. The movable bracket is rotatably connected to the rotating shaft on the frame through the quick-connect component. The flipping mechanism flips the movable bracket and the precast wall panels fixed in the movable bracket by the positioning component onto the frame by driving the movable bracket. The testing mechanism mounted on the frame tests the performance of the wall panels by acting on the flipped precast wall panels on the frame. The quick-connect assembly includes multiple connecting blocks fixed on a movable bracket and pressure blocks rotatably connected to the connecting blocks. Each connecting block has a mounting groove and a first arc-shaped pressure groove for pressing the rotating shaft. The first arc-shaped pressure groove is connected to the mounting groove. The pressure blocks are rotatably connected to the upper and lower groove surfaces of the mounting groove, respectively. Each pressure block has a second arc-shaped pressure groove. After rotation, each second arc-shaped pressure groove can form a connecting groove with the first arc-shaped pressure groove, allowing the rotating shaft to rotate. The upper and lower groove surfaces of the mounting groove are both fixed with a section parallel to the rotating shaft. The rotating rod has a connecting through hole on each pressure block and a torsion spring on each rotating rod. The two ends of the torsion spring are fixedly connected to the inner wall of the rotating rod and the connecting through hole, respectively. Each pressure block is rotatably connected to the connecting block through the connecting through hole of the rotating rod. Each second arc-shaped pressure groove rotates away from the first arc-shaped pressure groove due to the continuous force of the torsion spring. The second arc-shaped pressure groove on each pressure block contacts and presses against the rotating shaft through the continuous movement of the moving bracket. Each pressure block rotates through the continuous movement of the moving bracket and the pressing of each second arc-shaped pressure groove against the rotating shaft, and guides the rotating shaft into the connecting rotating shaft.

2. The testing device for precast wall panels according to claim 1, characterized in that: The movable support has a placement slot for placing precast wall panels. The positioning assembly includes multiple lifting cylinders fixed in the placement slot, a lifting support that is lifted and lowered in the placement slot under the simultaneous drive of each lifting cylinder, and multiple limiting rod groups set on the movable support for pressing and limiting the precast wall panels. The limiting rod group includes a first limiting rod and a second limiting rod arranged opposite to each other. Each first limiting rod and the second limiting rod are rotatably connected to the movable support, and the rotation axes of the first limiting rod and the second limiting rod are both perpendicular to the movable support. The first limiting rod has a first step with a limiting groove. The second limiting rod has a second step corresponding to the first step with a limiting protrusion corresponding to the limiting groove. After rotation, the first limiting rod and the second limiting rod are fixed by the insertion of the first step and the second step, and by the snap-fit ​​of the limiting groove and the limiting protrusion, and are arranged collinearly. The precast wall panels in the placement slot are fixed on the movable support by the lifting of the lifting support and the limiting of the collinear first limiting rod and the second limiting rod.

3. The testing device for precast wall panels according to claim 2, characterized in that: The movable support is provided with multiple limit block groups corresponding to each limit rod group. The limit block group includes a first limit block corresponding to each first limit rod and a second limit block corresponding to each second limit rod. Both the first and second limit blocks are provided with limit rotation grooves. Each limit rotation groove is provided with a first opening and a second opening that are connected and perpendicularly arranged. The limit rotation grooves on the first and second limit blocks are arranged opposite to each other. The first opening of the limit rotation groove on the first limit block and the first opening of the limit rotation groove on the second limit block are arranged opposite to each other. The second opening of each limit rotation groove is respectively provided on the surface of each first and second limit block away from the rotation axis. The first limit rod is rotatably connected to the first limit block through cooperation with the limit rotation groove, and the second limit rod is rotatably connected to the second limit block through cooperation with the limit rotation groove.

4. The testing device for precast wall panels according to claim 3, characterized in that: The bottom of the movable support is fixed with multiple universal rollers, and each universal roller has a "V" shaped groove. The frame is equipped with parallel guide rails. Each movable support moves closer to the frame through the cooperation of the grooves on the universal rollers and the guide rails, as well as the guidance of the guide rails.

5. The testing device for precast wall panels according to claim 1, characterized in that: Each connecting block is equipped with a locking assembly that locks the pressure blocks located on the lower groove surface of the mounting slot after rotation. The lower groove surface of the mounting slot has a vertically arranged lifting groove. The bottom of the lifting groove has a bottom through groove communicating with the lifting groove. The inner diameter of the bottom through groove is smaller than the inner diameter of the lifting groove. The locking assembly includes a locking rod that is lifted and connected in the lifting groove, a bottom connecting rod that is fixed to the bottom of the locking rod and lifted and connected in the bottom through groove, and a locking block that is fixed on the bottom connecting rod and located outside the connecting block. The pressure block on the lower groove surface has a locking hole into which the locking rod can be inserted. A return spring is sleeved on the locking rod. The two ends of the return spring are fixedly connected to the lifting groove and the locking rod, respectively. The length of the bottom connecting rod is greater than the length of the bottom through groove. Each locking rod extends into the corresponding locking hole through the continuous force of the return spring and fixes the corresponding pressure block. The quick-connect assembly also includes a linkage plate that connects each locking block. Each locking block is fixed on the linkage plate. A foot pedal is fixed on the side of the linkage plate away from the moving bracket.

6. The testing device for precast wall panels according to claim 5, characterized in that: The frame is also provided with a support shaft parallel to the rotating shaft. The movable bracket is also provided with multiple support blocks. Each support block and each connecting block are located on the same surface of the movable bracket. Each support block is provided with a support arc surface. Each support arc surface presses against the support shaft behind the movable bracket and is coaxially arranged with the support shaft. Each pressing block is fixed against the support shaft by the rotation of the movable bracket and the cooperation between each support arc surface and the support shaft.

7. The testing device for precast wall panels according to claim 1, characterized in that: The flipping mechanism includes a flipping assembly for driving the movable support to flip. The flipping assembly includes hydraulic cylinders fixed to the frame, connecting pins fixed to the telescopic ends of each hydraulic cylinder, and rotating rods fixed to the movable support. One end of each hydraulic cylinder is rotatably connected to the inner wall of the frame, and each rotating rod is rotatably connected to the side wall of the movable support. The rotating rods are provided with connecting holes through which the connecting pins can pass. The upper end of each rotating rod connected to the movable support is rotatably connected through the cooperation of the connecting pins and the connecting holes. The movable support, which is rotatably connected to the rotating shaft through the quick-connect assembly, flips from a horizontal state to a vertical state through the drive of each hydraulic cylinder and the rotatable connection between the rotating rods and the telescopic ends of the hydraulic cylinders.

8. The testing device for precast wall panels according to claim 7, characterized in that: The flipping mechanism further includes an auxiliary component for assisting the movable support in flipping. The auxiliary component includes a first auxiliary rod group and a second auxiliary rod group disposed opposite to each other on the frame and the movable support. The first auxiliary rod group includes two first auxiliary rods disposed opposite to each other on the inner wall of the frame. Each first auxiliary rod is rotatably connected to the inner wall of the frame. An auxiliary pin is fixedly provided at the end of each first auxiliary rod that is not connected to the frame. The second auxiliary rod group includes two second auxiliary rods disposed opposite to each other on the side wall of the movable support. Each second auxiliary rod is rotatably connected to the movable support. An auxiliary pin hole is provided at the end of each second auxiliary rod that is connected to the movable support. Each first auxiliary rod and the corresponding second auxiliary rod are rotatably connected by the insertion and engagement of the auxiliary pin and the auxiliary pin hole.

9. The testing device for precast wall panels according to claim 8, characterized in that: Both sides of the movable support are provided with a first support plate that can support the rotating rod when it is not rotating, and a second support plate that can support the second auxiliary rod when it is not rotating.

10. The testing device for precast wall panels according to claim 1, characterized in that: Both sides of the frame are provided with reinforcing plates to support the frame. The frame is also provided with multiple locking block groups. Each locking block group includes a first locking block and a second locking block that are fixedly and oppositely mounted on the frame. Both the first locking block and the second locking block are provided with locking grooves. The locking grooves are provided with a third opening and a fourth opening that are vertically connected. The third openings on the locking grooves of the first locking block and the second locking block are opposite to each other. Each fourth opening is located on the surface of the first locking block and the second locking block away from the rotating shaft. Each locking groove is rotatably mounted with a locking plate. After each locking plate is rotated, it presses against the flipped movable bracket.

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