Strength testing device for prefabricated plate body in prefabricated building system

Abstract

The utility model discloses a strength testing device for a prefabricated plate body in a prefabricated building system, belongs to the field of strength testing devices, and aims to solve the problem that the obtained experimental result is incomplete and inaccurate due to the lack of a low-temperature environment simulation function on the plate body in the conventional strength testing device for the prefabricated plate body. The device comprises a bottom plate, a working platform, a test plate fixing assembly, a cooling capacity output unit, a sliding unit and a simulation impact unit, the working platform is fixed at the top of the bottom plate, the cooling capacity output unit is arranged on the bottom plate, the sliding unit is fixed at the bottom of the working platform, and the test plate fixing assembly is arranged at the top of the working platform. The simulation impact unit is arranged on the bottom plate, and the execution end of the simulation impact unit and the cooling capacity output end of the cooling capacity output unit are located on the same side of the test plate fixing assembly. The device is mainly used for testing the strength of the prefabricated slab in the prefabricated building system in the simulated low-temperature environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of strength testing device, concretely relates to a strength testing device of prefabricated slab body in assembly type building system. BACKGROUND

[0002] With the acceleration of urbanization and population growth, the construction industry is facing unprecedented challenges and opportunities. Traditional construction methods have long construction periods, environmental impacts and other problems, which have been difficult to meet the needs of high-quality development of modern building industry.

[0003] Assembly type building system has the characteristics of standardization design, factory production and assembly construction. On the one hand, it can reduce the generation of construction waste and reduce environmental pollution through optimized design and standardized production. On the other hand, it can strictly control the quality of production process, reduce human error and environmental factors interference in construction site, so as to improve the overall quality of building. At the same time, compared with traditional construction methods, the rapid installation and assembly of prefabricated components can reduce the use of labor, significantly shorten the construction period and improve the construction efficiency.

[0004] However, for the high-cold region in northern China, the use of assembly type building system is limited by the low temperature environment, especially the prefabricated slab structure used in assembly type building system. Due to the large temperature difference between indoor and outdoor in high-cold region, the use strength of assembly type prefabricated slab structure also changes accordingly with the temperature difference. Therefore, in order to ensure the stability of subsequent buildings, low temperature environment strength experiment needs to be carried out before the prefabricated slab structure is built. However, the existing strength experiment device for prefabricated slab lacks the function of simulating low temperature environment for the slab, which leads to the inaccuracy of the experimental results. Therefore, it is very practical to develop a strength testing device for prefabricated slab body in assembly type building system to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a strength testing device for prefabricated slab body in assembly type building system to solve the problem that the existing strength experiment device for prefabricated slab lacks the function of simulating low temperature environment for the slab, which leads to the inaccuracy of the experimental results.

[0006] The application discloses a strength testing device for a prefabricated plate body in a fabricated building system, which comprises a bottom plate, a working platform, a testing plate fixing assembly, a cold output unit, a sliding unit and a simulated impact unit, the working platform is fixed on the top of the bottom plate, the cold output unit is arranged on the bottom plate, the fixing part of the cold output unit is located between the working platform and the bottom plate, the cold output end of the cold output unit penetrates through the working platform and is fixed on the top of the working platform, the sliding unit is fixed on the bottom of the working platform, the testing plate fixing assembly is arranged on the top of the working platform, the sliding end of the sliding unit penetrates through the working platform and is fixedly connected with the bottom of the testing plate fixing assembly, the sliding end of the sliding unit drives the testing plate fixing assembly to reciprocate along the length extension direction of the working platform, the simulated impact unit is arranged on the bottom plate, the fixing part of the simulated impact unit is located between the working platform and the bottom plate, the execution end of the simulated impact unit is arranged on the top of the working platform, and the execution end of the simulated impact unit and the cold output end of the cold output unit are located on the same side of the testing plate fixing assembly.

[0007] Further, the top of the working platform is processed with a guide sliding groove along the length extension direction of the working platform, the top of the working platform is further processed with a cold spray tank mounting blind groove and an impact plug-in through hole, and the cold spray tank mounting blind groove and the impact plug-in through hole are located on the same side of the guide sliding groove, a cold passing hole is processed at the center of the groove bottom of the cold spray tank mounting blind groove, a mounting sleeve is vertically arranged below the working platform and coaxially corresponds to the impact plug-in through hole, the top end of the mounting sleeve is an open end, the bottom end of the mounting sleeve is a closed end, the top end of the mounting sleeve is fixedly connected with the bottom of the working platform, and the mounting sleeve is in communication with the upper part of the working platform through the impact plug-in through hole.

[0008] Further, the cold output unit comprises a compression type refrigerating machine, a cold connection pipe, a cold spray tank, a rectangular bellows and two pushing assemblies, the compression type refrigerating machine is arranged between the bottom plate and the working platform and is arranged on the top of the bottom plate, the cold connection pipe is arranged above the compression type refrigerating machine and is in communication with the cold output end of the compression type refrigerating machine, the output end of the cold connection pipe is plugged into the cold passing hole at the bottom of the cold spray tank mounting blind groove, the cold spray tank is arranged on the top of the working platform and is embedded in the cold spray tank mounting blind groove, the inlet end of the cold spray tank is in communication with the output end of the cold connection pipe, the rectangular bellows is arranged on the outlet end of the cold spray tank and is fixedly connected with the outlet end of the cold spray tank, one pushing extension plate is arranged on each side of the outlet end of the rectangular bellows, the two pushing extension plates are fixedly connected with the rectangular bellows, the two pushing assemblies are symmetrically arranged on the two sides of the cold spray tank, the bottom of each pushing assembly is mounted on the top of the working platform, and the power output end of each pushing assembly is fixedly connected with a corresponding pushing extension plate.

[0009] Further, the pushing assembly comprises a triangular pushing frame and an electric push rod, a housing of the electric push rod is mounted on the top of the working platform through the mounting seat, and a piston rod end of the electric push rod faces the corresponding pushing extension plate, the triangular pushing frame is arranged between the electric push rod and the pushing extension plate corresponding to the electric push rod, one end of the triangular pushing frame is detachably connected with the piston rod end of the electric push rod, and the other end of the triangular pushing frame is detachably connected with the pushing extension plate.

[0010] Further, four magnetic strips are uniformly distributed along the contour on the outlet end of the rectangular bellows, and each magnetic strip is embedded on the outlet end of the rectangular bellows, and each magnetic strip is coplanarly arranged away from the end face of the rectangular bellows outlet end and the cold spray box.

[0011] Further, the sliding unit comprises a rotating motor, a shaft coupling, a lead screw and a lead screw nut sliding block, the lead screw is arranged below the guide sliding groove, the axis extension direction of the lead screw is consistent with the length extension direction of the guide sliding groove, the two ends of the lead screw are fixedly connected with the bottom of the working platform through a bearing support seat respectively, and each end of the lead screw is rotatably connected with the corresponding bearing support seat through a bearing, the rotating motor is fixed on the bottom of one end of the working platform through a motor bracket, and the power output shaft of the rotating motor faces the lead screw, one end of the lead screw extending to the outside of the bearing support seat and connected with the power output shaft of the rotating motor through the shaft coupling, the lead screw nut sliding block is sleeved on the lead screw and threadedly connected with the lead screw, and the top of the lead screw nut sliding block passes through the guide sliding groove and is fixedly connected with the test plate fixing assembly on the top of the working platform.

[0012] Further, the test plate fixing assembly comprises a sliding plate, a fixed frame, a fixed pressing plate and two support columns, the sliding plate is arranged above the guide sliding groove, the length extension direction of the sliding plate is the same as the length extension direction of the guide sliding groove, the bottom of the sliding plate is fixedly connected with the top of the lead screw nut sliding block, the two support columns are symmetrically arranged on the top of the sliding plate along the center line of the length direction of the sliding plate, and the bottom end of each support column is fixedly connected with the top end of the sliding plate, the fixed frame is arranged between the two support columns, and the fixed frame is fixedly connected with the two support columns, and the fixed pressing plate is embedded in the front side of the fixed frame, and the fixed pressing plate is threadedly detachably connected with the fixed frame.

[0013] Further, two groups of sliding wheels are embedded in the bottom of the sliding plate, the two groups of sliding wheels are oppositely arranged on the two sides of the guide sliding groove, and the sliding plate is slidably connected with the working platform through the two groups of sliding wheels.

[0014] Further, the simulation impact unit comprises a longitudinal adjustment push rod motor, a horizontal hydraulic push rod, an oil pump and a hydraulic oil tank, the hydraulic oil tank is arranged between the working platform and the bottom plate, and the hydraulic oil tank is arranged on the top of the bottom plate, the oil pump is arranged on the top of the hydraulic oil tank, and the shell of the oil pump is detachably connected with the top of the hydraulic oil tank through a mounting seat, the longitudinal adjustment push rod motor is inserted in the mounting sleeve in the vertical direction, and the shell of the longitudinal adjustment push rod motor is fixedly connected with the bottom of the mounting sleeve, the horizontal hydraulic push rod is arranged on the push rod end of the longitudinal adjustment push rod motor, and the axis of the horizontal hydraulic push rod is arranged vertically to the axis of the longitudinal adjustment push rod motor, the shell of the horizontal hydraulic push rod is detachably connected with the push rod end of the longitudinal adjustment push rod motor through a mounting seat, and the piston rod end of the horizontal hydraulic push rod is arranged towards the guide sliding groove, and the horizontal hydraulic push rod is arranged in communication with the hydraulic oil tank through an oil pipe, a reversing valve and the oil pump.

[0015] Further, the strength testing device further comprises a variable voltage power supply, the power input end of the variable voltage power supply is connected with the indoor power supply through a plug, and the power input ends of the compression type refrigerating machine, the electric push rod, the rotating motor, the longitudinal adjustment push rod motor and the oil pump are connected with the power output end of the variable voltage power supply through power lines.

[0016] The beneficial effects of the present application relative to the prior art are:

[0017] The present application provides a strength testing device for a prefabricated plate body in a fabricated building system, which comprises a cold output unit, which can simulate a low temperature environment for the prefabricated plate body to be tested, so as to more accurately obtain the use strength of the prefabricated plate body under a low temperature environment. The cold output unit used in the present application is a single-sided cold output structure, and a cold output tank and a rectangular bellows constitute a cold transmission channel, which can accurately transmit cold to the prefabricated plate body. This is the same as the case that the prefabricated plate body is affected by a low temperature environment in actual work, which ensures the accuracy of the low temperature environment simulation and is also beneficial to improve the accuracy of the final strength test result.

[0018] The present application provides a strength testing device for a prefabricated plate body in a fabricated building system, which is first installed on the test plate fixing assembly before testing, and then the plate body is subjected to single-sided low temperature treatment. The advantage of this design is that the worker installs a normal temperature plate body instead of a low temperature plate body when fixing the test plate body, which can effectively reduce the fixing difficulty of the test plate body and also avoid the tension influence of low temperature fixation on the test plate body, so as to obtain more accurate test results.

[0019] The application provides a strength testing device for a prefabricated plate body in a fabricated building system, which can realize the purpose of multipoint testing by adjusting the position of the testing plate body in the horizontal direction through a screw nut mechanism, adjusting the position of the horizontal hydraulic push rod in the vertical direction through a longitudinal adjusting push rod motor, and constructing multiple different testing points in the testing plane of the testing plate body, so that the limit strength of different areas of the prefabricated plate body in a low temperature environment can be obtained more accurately. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the strength testing device.

[0021] Figure 2 It is a structural schematic diagram of a sliding unit in the strength testing device.

[0022] Figure 3 It is a top view schematic diagram of a working platform in the strength testing device.

[0023] Figure 4 It is a structural schematic diagram of a pushing assembly in the strength testing device.

[0024] Figure 5 It is a distribution schematic diagram of a magnetic strip at the outlet end of a rectangular bellows in the strength testing device.

[0025] Figure 6 It is a front view schematic diagram of a testing plate fixing assembly in the strength testing device (when the testing plate and the fixing pressing plate are not installed).

[0026] Figure 7 It is a front view schematic diagram of a testing plate fixing assembly in the strength testing device (when the testing plate is installed and the fixing pressing plate is not installed).

[0027] Figure 8 It is a front view schematic diagram of a testing plate fixing assembly in the strength testing device (when the testing plate and the fixing pressing plate are installed).

[0028] Figure 9 It is a front view arrangement schematic diagram of a longitudinal adjusting push rod motor and a horizontal hydraulic push rod in the strength testing device.

[0029] Figure 10 It is a side view arrangement schematic diagram of a longitudinal adjusting push rod motor and a horizontal hydraulic push rod in the strength testing device.

[0030] Fig. 1 bottom plate, 2 working platform, 21 guide chute, 22 cold quantity spray tank installation blind slot, 23 cold quantity through hole, 24 impact plug-in through hole, 25 installation sleeve, 3 compression refrigeration machine, 4 cold quantity connecting pipe, 5 cold quantity spray tank, 6 rectangular bellows, 61 magnetic strip, 7 triangular push frame, 8 electric push rod, 9 variable voltage power supply, 10 rotating motor, 11 coupling, 12 lead screw, 13 lead screw nut sliding block, 14 test plate fixing assembly, 141 sliding plate, 142 support column, 143 fixed frame, 144 fixed pressing plate, 15 longitudinal adjustment push rod motor, 16 horizontal hydraulic push rod, 17 oil pump, 18 hydraulic oil tank and 19 test plate body. DETAILED DESCRIPTION

[0031] Specific embodiment one: in combination Figures 1 to 10 In this embodiment, a strength testing device for prefabricated plate body in fabricated building system is provided, which comprises a bottom plate 1, a working platform 2, a test plate fixing assembly 14, a cold quantity output unit, a sliding unit and a simulated impact unit. The working platform 2 is fixed on the top of the bottom plate 1. The cold quantity output unit is arranged on the bottom plate 1, and the fixed part of the cold quantity output unit is located between the working platform 2 and the bottom plate 1. The cold quantity output end of the cold quantity output unit penetrates through the working platform 2 and is fixed on the top of the working platform 2. The sliding unit is fixed on the bottom of the working platform 2. The test plate fixing assembly 14 is arranged on the top of the working platform 2, and the sliding end of the sliding unit penetrates through the working platform 2 and is fixedly connected with the bottom of the test plate fixing assembly 14. The sliding end of the sliding unit drives the test plate fixing assembly 14 to move back and forth along the length extension direction of the working platform 2. The simulated impact unit is arranged on the bottom plate 1, and the fixed part of the simulated impact unit is located between the working platform 2 and the bottom plate 1. The execution end of the simulated impact unit is arranged on the top of the working platform 2. The execution end of the simulated impact unit and the cold quantity output end of the cold quantity output unit are both located on the same side of the test plate fixing assembly 14.

[0032] The strength testing device for prefabricated plate body in fabricated building system provided in this embodiment comprises a cold quantity output unit, which can simulate a low-temperature environment for the prefabricated plate body to be tested, so as to more accurately obtain the use strength of the prefabricated plate body under the low-temperature environment. The cold quantity output unit used in this application is a single-sided cold quantity output structure, and a cold quantity transmission channel is formed by a cold quantity spray tank and a rectangular bellows to accurately deliver cold quantity to the prefabricated plate body. This is the same as the case that the prefabricated plate body is actually affected by a low-temperature environment, which ensures the accuracy of the low-temperature environment simulation and is also conducive to improving the accuracy of the final strength test result.

[0033] Specific embodiment two: in combination Figures 1 to 10The difference between the embodiment and the first specific embodiment is that a guide sliding groove 21 is formed on the top of the workbench 2 along the length direction of the workbench 2, and a cold energy injection box mounting blind groove 22 and an impact insertion through hole 24 are also formed on the top of the workbench 2, and the cold energy injection box mounting blind groove 22 and the impact insertion through hole 24 are located on the same side of the guide sliding groove 21, a cold energy passing hole 23 is formed at the center of the groove bottom of the cold energy injection box mounting blind groove 22, a mounting sleeve 25 is vertically arranged below the workbench 2, and the mounting sleeve 25 is coaxially arranged corresponding to the impact insertion through hole 24, the top end of the mounting sleeve 25 is an open end, the bottom end of the mounting sleeve 25 is a closed end, the top end of the mounting sleeve 25 is fixedly connected with the bottom of the workbench 2, and the mounting sleeve 25 is in communication with the upper part of the workbench 2 through the impact insertion through hole 24. The other components and connection modes are the same as those of the first specific embodiment.

[0034] In the embodiment, the guide sliding groove 21 is a guide structure of the test plate fixing assembly 14, the cold energy injection box mounting blind groove 22 is used for limiting the output end of the cold energy output unit, and the impact insertion through hole 24 is used for limiting the output end of the simulation impact unit.

[0035] Specific embodiment three: combined Figures 1 to 10 The difference between the embodiment and the second specific embodiment is that the cold energy output unit includes a compression refrigerating machine 3, a cold energy connecting pipe 4, a cold energy injection box 5, a rectangular bellows 6 and two pushing assemblies, the compression refrigerating machine 3 is arranged between the bottom plate 1 and the workbench 2, and the compression refrigerating machine 3 is arranged on the top of the bottom plate 1, the cold energy connecting pipe 4 is arranged above the compression refrigerating machine 3, the input end of the cold energy connecting pipe 4 is in communication with the cold energy output end of the compression refrigerating machine 3, the output end of the cold energy connecting pipe 4 is inserted into the cold energy passing hole 23 at the bottom of the cold energy injection box mounting blind groove 22, the cold energy injection box 5 is arranged on the top of the workbench 2, and the cold energy injection box 5 is embedded in the cold energy injection box mounting blind groove 22, the inlet end of the cold energy injection box 5 is in communication with the output end of the cold energy connecting pipe 4, the rectangular bellows 6 is arranged on the outlet end of the cold energy injection box 5, and the inlet end of the rectangular bellows 6 is fixedly connected with the outlet end of the cold energy injection box 5, one pushing extension plate is arranged on each side of the outlet end of the rectangular bellows 6, and the two pushing extension plates are fixedly connected with the rectangular bellows 6, the two pushing assemblies are symmetrically arranged on the two sides of the cold energy injection box 5, the bottom of each pushing assembly is mounted on the top of the workbench 2, and the power output end of each pushing assembly is fixedly connected with a corresponding pushing extension plate. The other components and connection modes are the same as those of the second specific embodiment.

[0036] Specific embodiment four: combined Figures 1 to 10The difference between the embodiment and the third embodiment is that the pushing assembly comprises a triangular pushing frame 7 and an electric push rod 8. The housing of the electric push rod 8 is mounted on the top of the working platform 2 through a mounting seat, and the piston rod end of the electric push rod 8 faces the corresponding pushing extension plate. The triangular pushing frame 7 is arranged between the electric push rod 8 and the corresponding pushing extension plate, and one end of the triangular pushing frame 7 is detachably connected with the piston rod end of the electric push rod 8, and the other end of the triangular pushing frame 7 is detachably connected with the pushing extension plate. The other components and connection modes are the same as those of the third embodiment.

[0037] The fifth embodiment is combined with the first embodiment. Figures 1 to 10 The difference between the embodiment and the fourth embodiment is that four magnetic strips 61 are uniformly distributed along the contour on the outlet end of the rectangular bellows 6, and each magnetic strip 61 is embedded on the outlet end of the rectangular bellows 6. Each magnetic strip 61 is arranged coplanarly away from the end face of the outlet end of the rectangular bellows 6 and the cold spray box 5. The other components and connection modes are the same as those of the fourth embodiment.

[0038] It is illustrated that the compression refrigeration machine 3 is used to provide cold energy, which is transmitted to the test board body 19 through the cold energy connecting pipe 4, the cold spray box 5 and the rectangular bellows 6, and the test board body 19 is subjected to one-side low-temperature treatment. When the cold energy output unit works, the outlet end of the rectangular bellows 6 is driven by the two push rod assemblies to approach the test board fixing assembly 14, and finally is adsorbed to the test board fixing assembly 14 under the action of the magnetic strip 61. The cold spray box 5 and the rectangular bellows 6 form a complete cold energy output channel, which can accurately perform low-temperature treatment on the test board body 19, and the cold energy will not be lost under the protection of the rectangular bellows 6, which can improve the efficiency of low-temperature treatment, so as to achieve the purpose of simulating the same working condition as the actual working condition.

[0039] The sixth embodiment is combined with the first embodiment. Figures 1 to 10The embodiment is described. The difference between the embodiment and the fifth specific embodiment is that the sliding unit comprises a rotating motor 10, a shaft coupling 11, a lead screw 12 and a lead screw nut sliding block 13. The lead screw 12 is arranged below the guide sliding groove 21, and the axis extension direction of the lead screw 12 is consistent with the length extension direction of the guide sliding groove 21. The two ends of the lead screw 12 are fixedly connected with the bottom of the working platform 2 through a bearing support seat respectively, and each end of the lead screw 12 is rotatably connected with the corresponding bearing support seat through a bearing. The rotating motor 10 is fixed on the bottom of one end of the working platform 2 through a motor bracket, and the power output shaft of the rotating motor 10 is arranged towards the lead screw 12. One end of the lead screw 12 close to the rotating motor 10 extends to the outside of the bearing support seat and is connected with the power output shaft of the rotating motor 10 through the shaft coupling 11. The lead screw nut sliding block 13 is sleeved on the lead screw 12 and is threadedly connected with the lead screw 12. The top of the lead screw nut sliding block 13 penetrates through the guide sliding groove 21 and is fixedly connected with the test board fixing assembly 14 located on the top of the working platform 2. The other components and connection modes are the same as those of the fifth specific embodiment.

[0040] In the embodiment, the sliding unit drives the test board fixing assembly 14 to move back and forth along the guide sliding groove 21, and is used for adjusting the working position of the test board fixing assembly 14. It relies on the lead screw nut mechanism as the main transmission component, has stable structure, is convenient to maintain, and is very economical.

[0041] Specific embodiment seven is combined Figures 1 to 10 The embodiment is described. The difference between the embodiment and the sixth specific embodiment is that the test board fixing assembly 14 comprises a sliding plate 141, a fixed frame 143, a fixed pressing plate 144 and two support columns 142. The sliding plate 141 is arranged above the guide sliding groove 21, and the length extension direction of the sliding plate 141 is the same as the length extension direction of the guide sliding groove 21. The bottom of the sliding plate 141 is fixedly connected with the top of the lead screw nut sliding block 13. The two support columns 142 are symmetrically arranged on the top of the sliding plate 141 along the center line of the length direction of the sliding plate 141, and the bottom end of each support column 142 is fixedly connected with the top end of the sliding plate 141. The fixed frame 143 is arranged between the two support columns 142, and the fixed frame 143 is fixedly connected with the two support columns 142. The fixed pressing plate 144 is embedded in the front side of the fixed frame 143, and the fixed pressing plate 144 is threadedly detachably connected with the fixed frame 143. The other components and connection modes are the same as those of the sixth specific embodiment.

[0042] Specific embodiment eight is combined Figures 1 to 10The difference between this embodiment and embodiment seven is that the bottom of the sliding plate 141 is embedded with two sets of sliding wheels, which are oppositely arranged on both sides of the guide sliding groove 21, and the sliding plate 141 is slidingly connected with the working platform 2 through the two sets of sliding wheels. The other components and connection modes are the same as those of embodiment seven.

[0043] In combination with embodiment seven and embodiment eight, it is explained that the test plate fixing assembly 14 is a clamping part of the test plate body 19, which is used to ensure the stability of the test plate body 19 during the strength simulation experiment. The sliding plate 141 is slidingly connected with the working platform 2 through the two sets of sliding wheels to ensure the smoothness of the overall movement of the test plate fixing assembly 14. The fixed frame 143 is a stepped frame structure. The test plate body 19 is arranged in the first stepped groove embedded in the fixed frame 143 and is limited by the profile of the first stepped groove. The fixed pressing plate 144 is embedded in the second stepped groove and is limited by the profile of the second stepped groove. At the same time, the fixed pressing plate 144 is in contact with the test plate body 19 and is pressed tightly in the fixed frame 143 through the bolt. The test plate fixing assembly 14 has two working positions during work. The first working position is arranged corresponding to the rectangular bellows 6 to perform the work station for constructing a low-temperature environment. The second working position corresponds to the impact end of the simulation impact unit to perform the work station for impact experiment. The conversion between the two work stations is realized by the movement of the screw nut sliding block 13 in the sliding unit.

[0044] Embodiment nine: in combination with Figures 1 to 10 In this embodiment, the difference between this embodiment and embodiment eight is that the simulation impact unit includes a longitudinal adjustment push rod motor 15, a horizontal hydraulic push rod 16, an oil pump 17 and a hydraulic oil tank 18. The hydraulic oil tank 18 is arranged between the working platform 2 and the bottom plate 1, and the hydraulic oil tank 18 is arranged on the top of the bottom plate 1. The oil pump 17 is arranged on the top of the hydraulic oil tank 18, and the shell of the oil pump 17 is detachably connected with the top of the hydraulic oil tank 18 through the mounting seat. The longitudinal adjustment push rod motor 15 is inserted in the mounting sleeve 25 along the vertical direction, and the shell of the longitudinal adjustment push rod motor 15 is fixedly connected with the bottom of the mounting sleeve. The horizontal hydraulic push rod 16 is arranged on the push rod end of the longitudinal adjustment push rod motor 15, and the axis of the horizontal hydraulic push rod 16 is arranged perpendicularly to the axis of the longitudinal adjustment push rod motor 15. The shell of the horizontal hydraulic push rod 16 is detachably connected with the push rod end of the longitudinal adjustment push rod motor 15 through the mounting seat. The piston rod end of the horizontal hydraulic push rod 16 is arranged towards the guide sliding groove 21. The horizontal hydraulic push rod 16 is arranged in communication with the hydraulic oil tank 18 through the oil pipe, the reversing method and the oil pump 17. The other components and connection modes are the same as those of embodiment eight.

[0045] In this embodiment, the simulation impact unit mainly uses the horizontal hydraulic push rod 16 as the test strength component, drives the test plate fixing assembly 14 to adjust the position in the horizontal direction through the screw nut mechanism, drives the horizontal hydraulic push rod 16 to adjust the position in the vertical direction through the vertical adjusting push rod motor 15, can construct multiple different test points in the test plane of the test plate body 19, and realizes the purpose of multi-point test, so that the limit strength of different regions of the prefabricated plate body in the low-temperature environment can be more accurately obtained.

[0046] Specific embodiment ten: ​ In this embodiment, the strength test device further comprises a voltage conversion power supply 9, the power input end of the voltage conversion power supply 9 is connected with the indoor power supply through a plug, the power input end of the compression type refrigerating machine 3, the power input end of the electric push rod 8, the power input end of the rotating motor 10, the power input end of the vertical adjusting push rod motor 15 and the power input end of the oil pump 17 are connected with the power output end of the voltage conversion power supply 9 through power lines. The other components and connection modes are the same as those in the ninth embodiment.

[0047] The above-mentioned embodiments of the utility model have been disclosed as preferred embodiments, however, are not used to limit the utility model, any skilled person in the art can make some changes or modifications to the equivalent embodiments within the scope of the technical scheme of the utility model without departing from the scope of the utility model, but any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the utility model without departing from the scope of the technical scheme of the utility model still belong to the scope of the technical scheme of the utility model.

[0048] Working principle

[0049] The strength testing device for the prefabricated plate body in the fabricated building system provided in the application, in working, firstly assembles the components according to the connecting relationship described in the first embodiment to the tenth embodiment, installs the testing plate body 19 to be tested in the fixed frame 143, and presses the testing plate body 19 in the fixed frame 143 through the fixed pressing plate 144, at this time, starts the rotating motor 10 to drive the lead screw 12 to rotate, the lead screw nut sliding block 13 drives the testing plate fixing assembly 14 to move along the guide sliding groove 21 to the corresponding position of the rectangular bellows 6, at this time, the output end of the rectangular bellows 6 is pushed by the push rod assembly to be close to the testing plate fixing assembly 14, and is adsorbed and fixed with the testing plate fixing assembly 14 under the action of the magnetic stripe 61 (the adsorption force is less than the back pulling force of the push rod assembly), at this time, starts the compression refrigerating machine 3 to output the cold quantity, the cold quantity is transported through the cold quantity delivery channel constructed by the cold quantity spray tank 5 and the rectangular bellows 6 to the testing surface of the testing plate body 19 for low-temperature treatment, after the low-temperature treatment is finished, the compression refrigerating machine 3 is closed, the output end of the rectangular bellows 6 is pulled away from the testing plate fixing assembly 14 by the push rod assembly, the rotating motor 10 is started again to drive the lead screw 12 to rotate, the lead screw nut sliding block 13 drives the testing plate fixing assembly 14 to move along the guide sliding groove 21 to the corresponding position of the horizontal hydraulic push rod 16, at this time, the transverse position of the testing plate fixing assembly 14 and the longitudinal position of the horizontal hydraulic push rod 16 can be adjusted to determine the testing point to be tested, and when the push rod end of the horizontal hydraulic push rod 16 is aligned with the testing point, the push rod of the horizontal hydraulic push rod 16 is controlled to push out, and the strength of the testing plate body 19 in the low-temperature environment is determined under the action of the continuous pushing force (when testing, the pressure sensor can be arranged at the push rod end of the horizontal hydraulic push rod 16, and the corresponding pushing force value when the testing plate body 19 deforms can be directly reflected).

Claims

1. A device for testing the strength of a prefabricated panel in a fabricated building system, characterized by: The intensity testing device comprises a bottom plate (1), a working platform (2), a test plate fixing assembly (14), a cold output unit, a sliding unit and a simulated impact unit, the working platform (2) is fixed on the top of the bottom plate (1), the cold output unit is arranged on the bottom plate (1), and the fixing part of the cold output unit is located between the working platform (2) and the bottom plate (1), the cold output end of the cold output unit penetrates through the working platform (2) and is fixed on the top of the working platform (2), the sliding unit is fixed on the bottom of the working platform (2), the test plate fixing assembly (14) is arranged on the top of the working platform (2), and the sliding end of the sliding unit penetrates through the working platform (2) and is fixedly connected with the bottom of the test plate fixing assembly (14), the sliding end of the sliding unit drives the test plate fixing assembly (14) to reciprocate along the length extension direction of the working platform (2), the simulated impact unit is arranged on the bottom plate (1), and the fixing part of the simulated impact unit is located between the working platform (2) and the bottom plate (1), the execution end of the simulated impact unit is arranged on the top of the working platform (2), and the execution end of the simulated impact unit and the cold output end of the cold output unit are located on the same side of the test plate fixing assembly (14).

2. The strength testing device for the prefabricated slab body in the fabricated building system according to claim 1, characterized in that: The top of the working platform (2) is provided with a guide sliding groove (21) along the length extension direction of the working platform (2), the top of the working platform (2) is also provided with a cold spray box mounting blind groove (22) and an impact plug-in through hole (24), and the cold spray box mounting blind groove (22) and the impact plug-in through hole (24) are located on the same side of the guide sliding groove (21), a cold passing hole (23) is arranged at the center of the groove bottom of the cold spray box mounting blind groove (22), a mounting sleeve (25) is arranged below the working platform (2) in the vertical direction, the mounting sleeve (25) is coaxially arranged corresponding to the impact plug-in through hole (24), the top end of the mounting sleeve (25) is an open end, the bottom end of the mounting sleeve (25) is a closed end, the top end of the mounting sleeve (25) is fixedly connected with the bottom of the working platform (2), and the mounting sleeve (25) is in communication with the upper part of the working platform (2) through the impact plug-in through hole (24).

3. The strength testing device for the prefabricated slab body in the fabricated building system according to claim 2, characterized in that: The cold energy output unit comprises a compression refrigerating machine (3), a cold energy connecting pipe (4), a cold energy injection tank (5), a rectangular bellows (6) and two pushing assemblies, the compression refrigerating machine (3) is arranged between the bottom plate (1) and the working platform (2), and the compression refrigerating machine (3) is arranged on the top of the bottom plate (1), the cold energy connecting pipe (4) is arranged above the compression refrigerating machine (3), and the input end of the cold energy connecting pipe (4) is in communication with the cold energy output end of the compression refrigerating machine (3), the output end of the cold energy connecting pipe (4) is inserted into the cold energy passing hole (23) at the bottom of the cold energy injection tank mounting blind groove (22), the cold energy injection tank (5) is arranged on the top of the working platform (2), and the cold energy injection tank (5) is embedded in the cold energy injection tank mounting blind groove (22), the inlet end of the cold energy injection tank (5) is in communication with the output end of the cold energy connecting pipe (4), the rectangular bellows (6) is arranged on the outlet end of the cold energy injection tank (5), and the inlet end of the rectangular bellows (6) is fixedly connected with the outlet end of the cold energy injection tank (5), two pushing extension plates are arranged on the two sides of the outlet end of the rectangular bellows (6), and the two pushing extension plates are fixedly connected with the rectangular bellows (6), and the two pushing assemblies are symmetrically arranged on the two sides of the cold energy injection tank (5), and the bottom of each pushing assembly is mounted on the top of the working platform (2), and the power output end of each pushing assembly is fixedly connected with a corresponding pushing extension plate.

4. The strength testing device for the prefabricated slab body in the fabricated building system according to claim 3, characterized in that: The pushing assembly comprises a triangular pushing frame (7) and an electric push rod (8), the shell of the electric push rod (8) is mounted on the top of the working platform (2) through a mounting seat, and the piston rod end of the electric push rod (8) faces a corresponding pushing extension plate, the triangular pushing frame (7) is arranged between the electric push rod (8) and a corresponding pushing extension plate, and one end of the triangular pushing frame (7) is detachably connected with the piston rod end of the electric push rod (8), and the other end of the triangular pushing frame (7) is detachably connected with the pushing extension plate.

5. The strength testing device for the prefabricated slab of the fabricated building system according to claim 4, characterized in that: Four magnetic strips (61) are uniformly distributed on the outlet end of the rectangular bellows (6) along the contour, and each magnetic strip (61) is embedded on the outlet end of the rectangular bellows (6), and each magnetic strip (61) is arranged coplanarly away from the end face of the outlet end of the rectangular bellows (6).

6. The strength testing device for a prefabricated slab in a fabricated building system according to claim 5, characterized in that: The sliding unit comprises a rotating motor (10), a shaft coupling (11), a lead screw (12) and a lead screw nut sliding block (13), the lead screw (12) is arranged below the guide sliding groove (21), the axis extension direction of the lead screw (12) is consistent with the length extension direction of the guide sliding groove (21), the two ends of the lead screw (12) are fixedly connected with the bottom of the working platform (2) through a bearing support seat respectively, and each end of the lead screw (12) is rotatably connected with the corresponding bearing support seat, the rotating motor (10) is fixed on the bottom of one end of the working platform (2) through a motor bracket, and the power output shaft of the rotating motor (10) is arranged towards the lead screw (12), one end of the lead screw (12) close to the rotating motor (10) extends to the outside of the bearing support seat and is connected with the power output shaft of the rotating motor (10) through the shaft coupling (11), the lead screw nut sliding block (13) is sleeved on the lead screw (12) and is threadedly connected with the lead screw (12), the top of the lead screw nut sliding block (13) penetrates through the guide sliding groove (21) and is fixedly connected with the test plate fixing assembly (14) located on the top of the working platform (2).

7. The strength testing device for a prefabricated slab in a fabricated building system according to claim 6, characterized in that: The test plate fixing assembly (14) comprises a sliding plate (141), a fixed frame (143), a fixed pressing plate (144) and two support columns (142), the sliding plate (141) is arranged above the guide sliding groove (21), the length extension direction of the sliding plate (141) is the same as that of the guide sliding groove (21), the bottom of the sliding plate (141) is fixedly connected with the top of the lead screw nut sliding block (13), the two support columns (142) are symmetrically arranged on the top of the sliding plate (141) along the center line in the length direction of the sliding plate (141), and the bottom end of each support column (142) is fixedly connected with the top end of the sliding plate (141), the fixed frame (143) is arranged between the two support columns (142), and the fixed frame (143) is fixedly connected with the two support columns (142), and the fixed pressing plate (144) is embedded in the front side of the fixed frame (143), and the fixed pressing plate (144) is threadedly detachably connected with the fixed frame (143).

8. The strength testing device for the prefabricated slab of the fabricated building system according to claim 1, characterized in that: The bottom of the sliding plate (141) is embedded with two groups of sliding wheels, the two groups of sliding wheels are oppositely arranged on the two sides of the guide sliding groove (21), and the sliding plate (141) is slidably connected with the working platform (2) through the two groups of sliding wheels.

9. The strength testing device for a prefabricated slab in a fabricated building system according to claim 8, characterized in that: The simulation impact unit comprises a longitudinal adjusting push rod motor (15), a horizontal hydraulic push rod (16), an oil pump (17) and a hydraulic oil tank (18), the hydraulic oil tank (18) is arranged between the working platform (2) and the bottom plate (1), the hydraulic oil tank (18) is arranged on the top of the bottom plate (1), the oil pump (17) is arranged on the top of the hydraulic oil tank (18), the shell of the oil pump (17) is detachably connected with the top of the hydraulic oil tank (18) through a mounting seat, the longitudinal adjusting push rod motor (15) is inserted in a mounting sleeve (25) in the vertical direction, the shell of the longitudinal adjusting push rod motor (15) is fixedly connected with the bottom of the mounting sleeve, the horizontal hydraulic push rod (16) is arranged on the push rod end of the longitudinal adjusting push rod motor (15), the axis of the horizontal hydraulic push rod (16) is arranged perpendicularly to the axis of the longitudinal adjusting push rod motor (15), the shell of the horizontal hydraulic push rod (16) is detachably connected with the push rod end of the longitudinal adjusting push rod motor (15) through a mounting seat, the piston rod end of the horizontal hydraulic push rod (16) is arranged towards the guide sliding groove (21), and the horizontal hydraulic push rod (16) is arranged in communication with the hydraulic oil tank (18) through an oil pipe, a reversing method and the oil pump (17).

10. The strength testing device for a prefabricated slab in a fabricated building system according to claim 9, characterized in that: The strength testing device further comprises a variable voltage power supply (9), the power input end of the variable voltage power supply (9) is connected with the indoor power supply through a plug, the power input end of the compression type refrigerating machine (3), the power input end of the electric push rod (8), the power input end of the rotating motor (10), the power input end of the longitudinal adjusting push rod motor (15) and the power input end of the oil pump (17) are connected with the power output end of the variable voltage power supply (9) through power lines.

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