Pressure resistance detection device for cement prefabricated slab production

Abstract

The invention relates to the technical field of detection equipment, in particular to a pressure resistance detection device for cement prefabricated slab production, which comprises a base, a lifting mechanism is arranged at the top of the base, a mounting cylinder is connected to the lifting mechanism, a connecting rod is slidably arranged at the lower part in the mounting cylinder, a universal ball I is connected to the bottom end of the connecting rod, and a pressure applying head is connected to the universal ball I. The driving assembly can drive the annular pressing blocks from inside to outside to move downwards in sequence, so that the bottom faces of the annular pressing blocks from inside to outside are flush with the bottom face of the annular pressing block at the innermost end, and the pressure applying area is increased; meanwhile, the annular pressing blocks from outside to inside can be driven to move upwards in sequence, so that the pressure application area is reduced, the effect of flexibly adjusting the pressure application area is achieved, the complex stress condition possibly occurring in engineering is simulated, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly to a compressive capacity detection device for the production of cement precast panels. Background Art

[0002] Cement precast panels are commonly used structural components in construction projects and are widely applied in fields such as floor slabs, wall panels, and bridge deck slabs. Their main function is to bear external loads and transfer them to the supporting structure. Therefore, the mechanical properties of precast panels, especially the compressive capacity, are directly related to the safety and durability of the entire building structure.

[0003] In practical engineering applications, cement precast panels need to bear various static and dynamic loads, including self-weight, personnel and equipment loads, wind loads, seismic actions, etc. If the compressive capacity of the precast panel is insufficient, it may lead to structural deformation, cracks, or even failure, thereby affecting the overall safety of the building. Therefore, the compressive capacity detection of cement precast panels is an important link to ensure project quality.

[0004] After retrieval, a Chinese patent with the patent publication number CN212410276U, a compressive detection device for cement precast panels, includes an operating table. Support legs are fixedly installed on the lower side of the operating table, a first chassis is fixedly installed on the lower side of the operating table, a second chassis is fixedly installed on one side of the first chassis, a fixed plate is fixedly installed inside the second chassis, a first motor is fixedly installed on one side of the fixed plate, the output end of the first motor is fixedly connected to a first gear, and the first gear is connected to a second gear through a chain drive.

[0005] Although the above patent can achieve the compressive detection of cement precast panels, it still has the following defects in practical applications: 1. The pressing area cannot be adjusted: The above patent uses a pressing plate with a fixed area size to perform pressure testing on cement precast panels, and the pressing area cannot be flexibly adjusted. This limitation makes it difficult to simulate the complex stress conditions that may occur in the project during the detection process. Due to the lack of the ability to flexibly adjust the pressing area, the detection results are difficult to comprehensively reflect the structural response and failure characteristics of cement precast panels under different application scenarios, thus affecting the detection accuracy.

[0006] 2. Lack of a buffer protection mechanism for the pressing component: The pressing plate of the above patent is fixedly connected to the second hydraulic cylinder, and no buffer protection measures are set, lacking buffer protection for the pressing plate. When the cement precast panel undergoes brittle fracture, the accumulated compressive stress inside is suddenly released, and the generated reverse impact force will damage the pressing plate, affecting the service life of the pressing plate.

[0007] 3. The angle of the pressure - applying component cannot be adjusted: The pressing plate in the above - mentioned patent is fixedly connected to the second hydraulic cylinder and cannot flexibly adjust the pressing angle. Once the cement precast slab breaks and collapses, it may cause some areas of the pressing plate to be suspended, while some other areas are in close contact with the cement precast slab, resulting in uneven stress and causing deformation of the pressing plate. This situation will not only shorten the service life of the pressing plate, but also may lead to abnormal sensor signals and an increase in repeated - test errors, affecting the accuracy of the detection data and the structural safety of the whole machine. Summary of the Invention

[0008] The purpose of the present invention is to provide a compressive - strength detection device for cement precast slab production, which integrates buffer protection and flexible - adjustment functions, in order to solve the above - mentioned problems.

[0009] To achieve the above - mentioned purpose, the present invention provides the following technical solution: A compressive - strength detection device for cement precast slab production includes a base. A support platform is arranged inside the base, and a pressure sensor is installed on the support platform. A lifting mechanism is arranged on the top of the base, and an installation cylinder is connected to the lifting mechanism. A connecting rod is slidably arranged in the lower part of the installation cylinder. The bottom end of the connecting rod is connected to a universal ball one, and a pressure - applying head is connected to the universal ball one. The pressure - applying head includes a cylinder connected to the universal ball one. A plurality of annular pressing blocks are arranged inside the cylinder. The plurality of annular pressing blocks are sleeved in sequence from the inside to the outside. The innermost annular pressing block is fixedly connected to the inside of the cylinder through a connecting rod. The height of the innermost annular pressing block is higher than that of the other annular pressing blocks. A driving component is arranged inside the cylinder for driving the other annular pressing blocks except the innermost annular pressing block to move up and down. An insertion cylinder is arranged on the outer wall of the cylinder, and a jack matching the insertion cylinder is opened at the top of the cylinder. A cylinder one is installed in the upper part of the installation cylinder, and a connecting block is connected to the cylinder one. The connecting block extends outside the installation cylinder and is connected to the insertion cylinder. A buffer spring is arranged inside the installation cylinder between the connecting block and the connecting rod. A plurality of movable supports are circumferentially and spacedly connected between the installation cylinder and the cylinder for supporting the pressure - applying head.

[0010] Preferably, the driving component includes an extrusion plate rotatably connected to the connecting rod. Two telescopic rods are circumferentially and spacedly connected to the top of each of the other annular pressing blocks except the innermost annular pressing block, and the telescopic rods are fixedly connected to the inner - top of the cylinder. A spring one is connected between the movable end and the fixed end of the telescopic rod. Two arc - shaped downward - pressing blocks are circumferentially and spacedly connected to the top of each of the other annular pressing blocks except the innermost annular pressing block. The lengths of the downward - pressing blocks from the inside to the outside decrease in sequence. When the extrusion plate rotates, it can contact and push the downward - pressing block to move downward. A gear ring is connected to the top of the extrusion plate, and a motor is installed on the top of the cylinder. A gear meshing with the gear ring is connected to the output shaft of the motor.

[0011] Preferably, the movable support includes a universal ball two, a telescopic damping rod, and a universal ball three. The universal ball two is connected to the outer wall of the installation cylinder and is located above the insertion cylinder. The universal ball three is connected to the top of the cylinder. The telescopic damping rod is connected between the universal ball two and the universal ball three.

[0012] Preferably, the support platform includes a support plate hinged inside the base and two first hydraulic cylinders hinged inside the base. The piston rod of the first hydraulic cylinder is hinged to the bottom of the support plate, and a pressure sensor is installed on the support plate.

[0013] Preferably, a locking mechanism for locking it is provided at the bottom of the support plate. The locking mechanism includes a double-headed cylinder installed at the bottom of the support plate. Connecting plates are connected to the piston rods on both sides of the double-headed cylinder. A set of insertion rods are connected to the mutually remote sides of the two connecting plates, and two sets of cartridge barrels matching the insertion rods are connected inside the base.

[0014] Preferably, a cleaning mechanism is provided on the support plate. The cleaning mechanism includes two sliders slidably arranged at the bottom of the support plate. A U-shaped plate is connected between the bottoms of the two sliders. The U-shaped plate is located outside the support plate. A brush located above the support plate is connected to the top of the U-shaped plate. A pulling component is provided between the support plate and the base. When the support plate swings downward, it drives the pulling component to pull the U-shaped plate to move. When the support plate swings upward, it drives the pulling component to pull the U-shaped plate to move back to its original position, thereby driving the brush to reciprocate and clean the debris of the precast concrete slab on the support plate.

[0015] Preferably, the pulling component includes two sliding rods respectively slidably connected to both sides of the support plate. Pulleys are provided on both sliding rods. A first pulling rope is connected between the sliding rod and the base. Two second pulling ropes are connected to the U-shaped plate. The two second pulling ropes respectively bypass the two pulleys and are connected to the support plate. A second spring is connected between the slider and the support plate.

[0016] Preferably, a transparent protective cover is connected to the top of the base, and a transparent cover door is hinged to one side of the transparent protective cover.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the driving component, the annular pressing blocks from the inside to the outside can be driven to move downward in sequence, so that the bottom surfaces of the annular pressing blocks from the inside to the outside are flush with the bottom surface of the innermost annular pressing block, so as to increase the pressing area; and the annular pressing blocks from the outside to the inside can be driven to move upward in sequence to reduce the pressing area, achieving the effect of being able to flexibly adjust the size of the pressing area, thereby simulating the complex stress conditions that may occur in the project and improving the detection accuracy.

[0018] 2. At the moment when the precast concrete slab breaks, the first cylinder drives the connecting block to drive the insertion cylinder to be pulled out of the insertion hole upward to release the locking of the pressing head. The buffer spring starts to play a role, elastically buffer and protect the pressing head, and absorb the impact force generated at the moment when the precast concrete slab breaks; at the same time, the telescopic damping rod further provides a buffering effect, reducing the risk of damage to the pressing head and extending its service life.

[0019] 3. After the insertion cylinder moves upward to release the locking of the pressure head, the pressure head can flexibly adjust its angle around the universal ball 1, thereby reducing the non-uniform pressure concentration caused by local fragmentation of the precast cement panel, ensuring uniform stress on the pressure head, reducing the risk of deformation of the pressure head, not only extending the service life of the pressure head, but also improving the accuracy of the detection data and the structural safety of the whole machine.

[0020] 4. Through the support platform composed of the support plate and the hydraulic cylinder 1, the debris of the precast cement panel can be dumped downward after the detection is completed, realizing the automatic cleaning of waste. It is not only convenient to operate, but also effectively reduces the manual cleaning intensity and improves the automation level.

[0021] 5. Through the locking mechanism, the stable locking of the support plate can be realized, ensuring that the support plate stably supports the precast cement panel, which helps to improve the stability and safety of the detection process.

[0022] 6. Through the cleaning mechanism composed of the U-shaped plate, the brush, the sliding rod, the pulley, the pulling rope 1, the pulling rope 2, etc., the U-shaped plate can be driven to drive the brush to move while the support plate swings downward, automatically cleaning the debris of the precast cement panel remaining on the surface of the support plate, preventing the accumulation or adhesion of debris from affecting the next detection, and further improving the convenience, cleanliness and automation level of the operation. Description of the Drawings

[0023] Figure 1 This is a three-dimensional structure diagram of the present invention.

[0024] Figure 2 This is a partial three-dimensional structure diagram of the present invention.

[0025] Figure 3 This is a three-dimensional structure diagram of the pressure head of the present invention.

[0026] Figure 4 This is an exploded view of the pressure head of the present invention.

[0027] Figure 5 This is a three-dimensional structure diagram of a part of the pressure head of the present invention.

[0028] Figure 6 This is a three-dimensional structure diagram of the movable support member of the present invention.

[0029] Figure 7 This is a three-dimensional structure diagram of the locking mechanism of the present invention.

[0030] Figure 8 This is an installation diagram of the cleaning mechanism of the present invention.

[0031] Figure 9 This is a partial three-dimensional structure diagram of the cleaning mechanism of the present invention.

[0032] In the figure: 1 - base, 2 - support platform, 21 - support plate, 22 - first hydraulic cylinder, 3 - pressure sensor, 41 - guide rail, 42 - lifting plate, 43 - second hydraulic cylinder, 5 - mounting cylinder, 6 - connecting rod, 7 - first universal ball, 8 - pressing head, 80 - jack, 81 - cylinder, 82 - annular pressing block, 83 - connecting rod, 84 - telescopic rod, 85 - first spring, 86 - lower pressing block, 861 - first inclined surface, 87 - extrusion plate, 871 - second inclined surface, 88 - gear ring, 89 - annular sliding rail, 810 - motor, 811 - gear, 9 - first air cylinder, 10 - connecting block, 11 - inserting cylinder, 12 - buffer spring, 13 - movable support, 131 - second universal ball, 132 - telescopic damping rod, 133 - third universal ball, 14 - transparent protective cover, 15 - transparent cover door, 161 - double - headed air cylinder, 162 - connecting plate, 163 - inserting rod, 164 - clamping cylinder, 165 - guide rod, 170 - first guide rod, 171 - slider, 172 - U - shaped plate, 173 - brush, 174 - second guide rod, 175 - sliding rod, 176 - pulley, 177 - first pulling rope, 178 - second pulling rope, 179 - second spring, 18 - collection box. Detailed implementation manner

[0033] See Figures 1-6, A compressive capacity detection device for the production of cement precast panels, including a base 1. Inside the base 1, there is a support platform 2 for supporting the cement precast panels. A pressure sensor 3 is installed on the support platform 2. At the rear side of the top of the base 1, there is a lifting mechanism. The lifting mechanism includes a guide rail 41 connected to the rear side of the top of the base 1. A lifting plate 42 is slidably connected to the guide rail 41. A hydraulic cylinder two 43 for driving the lifting of the lifting plate 42 is installed on the guide rail 41. An installation cylinder 5 is connected to the lifting plate 42. Inside the lower part of the installation cylinder 5, a connecting rod 6 is slidably arranged. The bottom end of the connecting rod 6 is connected with a universal ball one 7. A pressing head 8 is connected to the universal ball one 7. The pressing head 8 includes a cylinder 81 connected to the universal ball one 7. The bottom of the cylinder 81 is open. Inside the cylinder 81, there are four annular pressing blocks 82. The four annular pressing blocks 82 are sleeved in sequence from the inside to the outside. The top of the innermost annular pressing block 82 is connected with a connecting rod 83. The connecting rod 83 is fixedly connected to the inner top of the cylinder 81. The bottom surface of the innermost annular pressing block 82 is lower than the bottom surface of the cylinder 81. The height of the innermost annular pressing block 82 is higher than that of the other annular pressing blocks 82. The heights of the other annular pressing blocks 82 except the innermost annular pressing block 82 are the same. Inside the cylinder 81, there is a driving component for driving the lifting of the other annular pressing blocks 82 except the innermost annular pressing block 82. The driving component includes a pressing plate 87 rotatably connected to the connecting rod 6. Bevel surfaces two 871 are arranged on the right front side and the left rear side of the pressing plate 87. The tops of the other annular pressing blocks 82 except the innermost annular pressing block 82 are connected with two front and rear telescopic rods 84 at circumferential intervals. The telescopic rods 84 are fixedly connected to the inner top of the cylinder 81 for guiding the lifting of the annular pressing blocks 82. A spring one 85 is connected between the movable end and the fixed end of the telescopic rod 84. The spring one 85 is located inside the telescopic rod 84. The tops of the other annular pressing blocks 82 except the innermost annular pressing block 82 are connected with two left and right arc-shaped pressing blocks 86 at circumferential intervals. A bevel surface one 861 is arranged on the pressing block 86. The lengths of the pressing blocks 86 from the inside to the outside decrease in sequence. A gear ring 88 is connected to the top of the pressing plate 87. An annular slide rail 89 for guiding the rotation of the gear ring 88 is connected to the inner wall of the cylinder 81. A motor 810 is installed on the top of the cylinder 81. A gear 811 meshing with the gear ring 88 is connected to the output shaft of the motor 810. An insertion cylinder 11 is slidably arranged on the outer wall of the cylinder 81. A jack 80 matching with the insertion cylinder 11 is opened on the top of the cylinder 81. A cylinder one 9 is installed in the upper part of the installation cylinder 5. A connecting block 10 is connected to the piston rod of the cylinder one 9. The connecting block 10 extends outside the installation cylinder 5 and is connected to the insertion cylinder 11. The connecting block 10 is slidably matched with the installation cylinder 5. A buffer spring 12 is arranged inside the installation cylinder 5 between the connecting block 10 and the connecting rod 6. The two ends of the buffer spring 12 are respectively abutted against the bottom of the connecting block 10 and the top of the connecting rod 6. Three movable support members 13 are connected at circumferential intervals between the installation cylinder 5 and the cylinder 81 for supporting the pressing head 8. The movable support member 13 includes a universal ball two 131, a telescopic damping rod 132 and a universal ball three 133.The universal ball two 131 is connected to the outer wall of the mounting cylinder 5 and is located above the inserting cylinder 11. The universal ball three 133 is connected to the top of the cylinder 81. The telescopic damping rod 132 is connected between the universal ball two 131 and the universal ball three 133. The telescopic damping rod 132 is a prior art and will not be elaborated here.

[0034] First, place the cement precast panel to be tested on the support platform 2. Then, control the hydraulic cylinder two 43 to drive the lifting plate 42 to drive the mounting cylinder 5 to move up and down reciprocally, so that the components mounted on the mounting cylinder 5 move up and down reciprocally synchronously, and further make the pressing head 8 move up and down reciprocally. When the pressing head 8 moves down, it squeezes the cement precast panel through the annular pressing block 82 thereon to achieve the compressive test of the cement precast panel. During this process, the pressure sensor 3 can monitor the pressure received by the cement precast panel in real time and transmit the data to the background terminal. When the cement precast panel breaks, the pressure sensor 3 will detect that the pressure value drops rapidly and is accompanied by large fluctuations. After analyzing the pressure data, the background terminal sends a signal to the controller (not shown in the figure. The controller is a prior art and will not be elaborated here) when it determines the abnormal fluctuation. After receiving the signal, the controller controls the air cylinder one 9 to drive the connecting block 10 to drive the inserting cylinder 11 to pull out upward from the jack 80 to release the locking of the pressing head 8. At this time, the buffer spring 12 starts to play a role to elastically buffer and protect the pressing head 8 and absorb the impact force generated at the moment when the cement precast panel breaks; at the same time, the telescopic damping rod 132 further provides a buffering effect to reduce the risk of damage to the annular pressing block 82 on the pressing head 8 and extend its service life.

[0035] After the inserting cylinder 11 moves up to release the locking of the pressing head 8, the pressing head 8 can flexibly adjust the angle around the universal ball one 7, so as to reduce the non-uniform pressure concentration phenomenon caused by local fragmentation of the cement precast panel, ensure that the annular pressing block 82 on the pressing head 8 is evenly stressed, and reduce the risk of deformation of the annular pressing block 82. This can not only extend the service life of the annular pressing block 82, but also improve the accuracy of the detection data and the structural safety of the whole machine. During this process, the movable support 13 composed of the universal ball two 131, the telescopic damping rod 132 and the universal ball three 133 plays an auxiliary support and dynamic protection role for the pressing head 8. When the detection is completed and the pressing head 8 follows the mounting cylinder 5 to move up and reset, control the air cylinder one 9 to drive the connecting block 10 to drive the inserting cylinder 11 to insert downward into the jack 80 of the cylinder 81 to relock the pressing head 8 and prepare for the next round of detection.

[0036] Before the formal pressure application, the pressure application area can also be adjusted according to the detection requirements. Specifically, control the motor 810 to drive the gear 811 to rotate, thereby driving the toothed ring 88 to drive the pressing plate 87 to rotate. Since the lengths of the downward pressing blocks 86 from the inside to the outside decrease in sequence, the rotation of the pressing plate 87 presses the first inclined surfaces 861 of the downward pressing blocks 86 from the inside to the outside through the second inclined surfaces 871 thereon, so that the downward pressing blocks 86 from the inside to the outside move downward in sequence, thereby driving the annular pressing blocks 82 from the inside to the outside to move downward in sequence, and further making the bottom surfaces of the annular pressing blocks 82 from the inside to the outside flush with the bottom surface of the innermost annular pressing block 82, so as to increase the pressure application area. The remaining annular pressing blocks 82 except the innermost annular pressing block 82 move downward, pulling the telescopic rod 84 to elongate and stretching the first spring 85. Similarly, control the motor 810 to drive the gear 811 to reverse, thereby driving the toothed ring 88 to drive the pressing plate 87 to reverse, and sequentially separating from the downward pressing blocks 86 from the outside to the inside. Under the reset action of the first spring 85, the telescopic rod 84 is shortened, thereby pulling the annular pressing blocks 82 from the outside to the inside to move upward in sequence, so as to reduce the pressure application area. In this way, the device of the present invention can flexibly adjust the size of the pressure application area, simulate complex stress conditions that may occur in engineering, and improve the detection accuracy.

[0037] See Figures 7-8 , the support platform 2 includes a support plate 21 hinged to the inner rear side of the base 1 and two left and right hydraulic cylinders 22 hinged to the inner wall of the rear side of the base 1. The piston rods of the hydraulic cylinders 22 are hinged to the bottom of the support plate 21. The pressure sensor 3 is installed on the support plate 21. A collection box 18 that can be pulled out forward is slidably provided in the lower part of the base 1.

[0038] Place the cement precast slab to be detected on the support plate 21. After the detection is completed, control the piston rod of the hydraulic cylinder 22 to retract, thereby pulling the support plate 21 to swing downward, and dumping the fragments of the cement precast slab thereon into the collection box 18 for collection, realizing the automatic cleaning of waste materials. It is not only convenient to operate, but also effectively reduces the manual cleaning intensity and improves the automation level. After all the fragments of the cement precast slab are dumped into the collection box 18, control the piston rod of the hydraulic cylinder 22 to extend, thereby pushing the support plate 21 to swing upward to reset.

[0039] See Figure 7, a locking mechanism for locking is provided at the bottom of the support plate 21. The locking mechanism includes a double-headed cylinder 161 installed at the bottom of the support plate 21. Connecting plates 162 are connected to the piston rods on the front and rear sides of the double-headed cylinder 161. A set of insertion rods 163 are connected to the mutually remote sides of the two connecting plates 162. The number of insertion rods 163 in each set is five, and the five insertion rods 163 in each set are spaced apart from left to right. Two sets of cartridge barrels 164 matching the insertion rods 163 are connected inside the base 1. The number of cartridge barrels 164 in each set is five, and the five cartridge barrels 164 in each set are spaced apart from left to right. Four guide rods 165 are connected to the bottom of the support plate 21 at intervals from left to right. The guide rods 165 slidably penetrate the connecting plates 162 to guide the forward and backward movement of the connecting plates 162.

[0040] When it is necessary to make the support plate 21 swing downward to dump the debris of the precast concrete slab, first control the double-headed cylinder 161 to drive the two connecting plates 162 to approach each other, so as to pull out the insertion rods 163 from the cartridge barrels 164 to release the locking of the support plate 21. After the support plate 21 swings upward and resets, control the double-headed cylinder 161 to drive the two connecting plates 162 to move away from each other, so as to insert the insertion rods 163 into the corresponding cartridge barrels 164 to achieve the stable locking of the support plate 21, ensuring that the support plate 21 stably supports the precast concrete slab, which helps to improve the stability and safety of the detection process.

[0041] See Figures 8-9, a cleaning mechanism is provided on the support plate 21. The cleaning mechanism includes a slider 171, a U-shaped plate 172 and a brush 173. Sliding grooves are formed on the left and right sides of the bottom of the support plate 21. Sliders 171 are slidably connected in both sliding grooves. Guide rods 170 are connected in both sliding grooves. The two guide rods 170 respectively penetrate through the two sliders 171 in a sliding manner to guide the forward and backward movement of the slider 171. A U-shaped plate 172 is connected between the bottoms of the two sliders 171. The U-shaped plate 172 is located outside the support plate 21. A brush 173 located above the support plate 21 is connected to the top of the U-shaped plate 172. Guide grooves are formed on the front sides of the left and right sides of the support plate 21. A pulling assembly is provided between the support plate 21 and the base 1. When the support plate 21 swings downward, it drives the pulling assembly to pull the U-shaped plate 172 forward. When the support plate 21 swings upward, it drives the pulling assembly to pull the U-shaped plate 172 backward. The pulling assembly includes two slide rods 175 respectively slidably connected in the two guide grooves. Guide rods 174 are connected in both guide grooves. The two guide rods 174 respectively penetrate through the two slide rods 175 in a sliding manner to guide the forward and backward movement of the slide rod 175. Pulleys 176 are rotatably provided on both slide rods 175. A first pulling rope 177 is connected between the front side of the slide rod 175 and the front inner wall of the base 1. Two left and right second pulling ropes 178 are connected to the front lower part of the U-shaped plate 172. The two second pulling ropes 178 respectively bypass the two pulleys 176 and are connected to the support plate 21. A second spring 179 is sleeved on the guide rod 170. The two ends of the second spring 179 are respectively connected to the slider 171 and the support plate 21.

[0042] When the support plate 21 swings downward, it drives the components thereon to swing downward. Since the front end of the first pulling rope 177 is fixedly connected to the base 1, when the slide rod 175 swings downward, the slide rod 175 is pulled through the first pulling rope 177 to drive the pulley 176 to move forward. Since the two ends of the second pulling rope 178 are respectively connected to the U-shaped plate 172 and the support plate 21, when the pulley 176 moves forward, the U-shaped plate 172 is pulled through the second pulling rope 178 to drive the brush 173 to move forward, automatically cleaning the debris of the precast concrete components remaining on the surface of the support plate 21, preventing the accumulation or adhesion of debris from affecting the next detection, and further improving the convenience, cleanliness and automation level of the operation. When the U-shaped plate 172 moves forward, it drives the slider 171 to move forward and compresses the second spring 179. When the support plate 21 swings upward, it drives the components thereon to swing upward. Under the reset action of the second spring 179, the slider 171 is pushed to drive the U-shaped plate 172 to move backward, thereby pulling the pulley 176 through the second pulling rope 178 to drive the slide rod 175 to move backward and reset.

[0043] See Figure 1, a transparent protective cover 14 is connected to the top of the base 1, and a transparent cover door 15 is hinged to the front side of the transparent protective cover 14. The detection area can be sealed by the transparent protective cover 14 and the transparent cover door 15, effectively preventing the fragments of the crushed cement precast panel from flying everywhere during the detection process, thereby ensuring the safety of the operators and keeping the working environment clean and tidy.

Claims

1. A compressive capacity detection device for the production of cement precast slabs, comprising a base (1), a support platform (2) is arranged inside the base (1), a pressure sensor (3) is installed on the support platform (2), a lifting mechanism is arranged at the top of the base (1), and an installation cylinder (5) is connected to the lifting mechanism, characterized in that, A connecting rod (6) is slidably arranged at the lower part inside the installation cylinder (5). The bottom end of the connecting rod (6) is connected with a first universal ball (7). A pressing head (8) is connected to the first universal ball (7). The pressing head (8) includes a cylinder (81) connected to the first universal ball (7). A plurality of annular pressing blocks (82) are arranged inside the cylinder (81). The plurality of annular pressing blocks (82) are sleeved in sequence from the inside to the outside. The annular pressing block (82) at the innermost end is fixedly connected inside the cylinder (81) through a connecting rod (83). The height of the annular pressing block (82) at the innermost end is higher than that of the other annular pressing blocks (82). A driving assembly is arranged inside the cylinder (81) for driving the other annular pressing blocks (82) except the innermost annular pressing block (82) to move up and down. An inserting cylinder (11) is arranged on the outer wall of the cylinder (81). A jack (80) matching the inserting cylinder (11) is opened at the top of the cylinder (81). A first cylinder (9) is installed at the upper part inside the installation cylinder (5). A connecting block (10) is connected to the first cylinder (9). The connecting block (10) extends outside the installation cylinder (5) and is connected to the inserting cylinder (11). A buffer spring (12) is arranged inside the installation cylinder (5) between the connecting block (10) and the connecting rod (6). A plurality of movable supports (13) are circumferentially and spacedly connected between the installation cylinder (5) and the cylinder (81) for supporting the pressing head (8).

2. The compressive capacity detection device for the production of cement precast panels according to claim 1, characterized in that, The driving assembly includes a pressing plate (87) rotatably connected to the connecting rod (6). Two telescopic rods (84) are circumferentially and spacedly connected to the top of the other annular pressing blocks (82) except the innermost annular pressing block (82). The telescopic rods (84) are fixedly connected to the inner top of the cylinder (81). A first spring (85) is connected between the movable end and the fixed end of the telescopic rod (84). Two arc-shaped pressing blocks (86) are circumferentially and spacedly connected to the top of the other annular pressing blocks (82) except the innermost annular pressing block (82). The lengths of the pressing blocks (86) from the inside to the outside decrease in sequence. When the pressing plate (87) rotates, it can contact the pressing block (86) and push the pressing block (86) to move down. A gear ring (88) is connected to the top of the pressing plate (87). A motor (810) is installed at the top of the cylinder (81). A gear (811) meshing with the gear ring (88) is connected to the output shaft of the motor (810).

3. A compressive capacity detection device for the production of cement precast slabs according to claim 2, characterized in that, The movable support (13) includes a second universal ball (131), a telescopic damping rod (132) and a third universal ball (133). The second universal ball (131) is connected to the outer wall of the installation cylinder (5) and is located above the inserting cylinder (11). The third universal ball (133) is connected to the top of the cylinder (81). The telescopic damping rod (132) is connected between the second universal ball (131) and the third universal ball (133).

4. The compressive capacity detection device for the production of cement precast panels according to claim 3, characterized in that, The support platform (2) includes a support plate (21) hinged inside the base (1) and two first hydraulic cylinders (22) hinged inside the base (1). The piston rods of the first hydraulic cylinders (22) are hinged to the bottom of the support plate (21). A pressure sensor (3) is installed on the support plate (21).

5. A compressive capacity detection device for the production of cement precast slabs according to claim 4, characterized in that, A locking mechanism for locking is provided at the bottom of the support plate (21). The locking mechanism includes a double-headed cylinder (161) installed at the bottom of the support plate (21). Connecting plates (162) are connected to the piston rods on both sides of the double-headed cylinder (161). A set of insertion rods (163) are connected to the mutually remote sides of the two connecting plates (162). Two sets of cartridge barrels (164) matching the insertion rods (163) are connected inside the base (1).

6. The compressive capacity detection device for the production of cement precast slabs according to claim 5, characterized in that, A cleaning mechanism is provided on the support plate (21). The cleaning mechanism includes two sliders (171) slidably arranged at the bottom of the support plate (21). A U-shaped plate (172) is connected between the bottoms of the two sliders (171). The U-shaped plate (172) is located outside the support plate (21). A brush (173) located above the support plate (21) is connected to the top of the U-shaped plate (172). A pulling assembly is provided between the support plate (21) and the base (1). When the support plate (21) swings downward, it drives the pulling assembly to pull the U-shaped plate (172) to move. When the support plate (21) swings upward, it drives the pulling assembly to pull the U-shaped plate (172) to move back to its original position, thereby driving the brush (173) to reciprocate and clean the debris of the precast concrete slab on the support plate (21).

7. The compressive capacity detection device for the production of cement precast panels according to claim 6, characterized in that, The pulling assembly includes two sliding rods (175) respectively slidably connected to both sides of the support plate (21). Pulleys (176) are provided on both of the two sliding rods (175). A first pulling rope (177) is connected between the sliding rod (175) and the base (1). Two second pulling ropes (178) are connected to the U-shaped plate (172). The two second pulling ropes (178) respectively bypass the two pulleys (176) and are connected to the support plate (21). A second spring (179) is connected between the slider (171) and the support plate (21).

8. A compressive capacity detection device for the production of cement precast slabs according to claim 7, characterized in that, A transparent protective cover (14) is connected to the top of the base (1). A transparent cover door (15) is hinged to one side of the transparent protective cover (14).

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