A device for testing the strength of precast concrete parts

Abstract

The present invention discloses a device for testing the strength of precast concrete parts, which relates to the technical field of precast concrete part testing, and comprises a testing platform, wherein the top of the testing platform is equipped with a shell, the upper inner wall of the shell is equipped with a rebound hammer for testing the strength of precast concrete parts, and the top of the testing platform is slidably equipped with a bearing assembly. The present invention cooperates with the bearing assembly and the shell, so that the detection of precast concrete parts is in a closed environment, which can better prevent the situation that the broken precast concrete parts injure people, so that the device is highly safe when performing the detection step, and along with the movement of the stage entering and exiting the shell, the positioning assembly can be automatically driven to automatically position the precast concrete parts, ensuring that they are in a stable state when being tested, and the positioning assembly can be adjusted according to the size of the precast concrete parts being tested, so that the application range of the device is wider.

Description

Technical Field

[0001] The invention relates to the technical field of precast concrete part detection, in particular to a precast concrete part strength detection device. Background Art

[0002] At present, in the process of building construction, in order to ensure the quality of the project, it is necessary to test the bearing strength of precast concrete parts. The concrete strength test is mainly carried out through the briquetting method. At present, the briquetting method is tested by a strength testing machine.

[0003] The patent document with announcement number CN 217425067 U discloses a precast concrete part strength detection device, which is provided with a mounting frame, mounting bolts, a clamping plate, a mounting hole and a clamping groove. The rebound hammer is inserted into the mounting hole, and then the mounting bolts on both sides are rotated. The mounting bolts drive the clamping plate to move through the rotational action between the mounting bolts and the mounting frame, and the rebound hammer is clamped and fixed by two clamping plates to complete the installation of the rebound hammer, thereby facilitating the disassembly and assembly of the rebound hammer.

[0004] However, the above technical solution has certain shortcomings. The precast concrete parts to be tested are exposed to the outside. If the precast concrete parts to be tested are broken, they will come into contact with the testing table and produce flying particles that may injure people, or even continue to fall from the testing table and injure the legs of surrounding workers. Therefore, a strength testing device for precast concrete parts is proposed. Summary of the invention

[0005] Based on this, an object of the present invention is to provide a device for detecting the strength of a precast concrete part to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for testing the strength of precast concrete parts, comprising a testing platform, a shell is mounted on the top of the testing platform, a rebound hammer for testing the strength of precast concrete parts is mounted on the upper inner wall of the shell, a bearing assembly is slidably mounted on the top of the testing platform, and a notch groove for the bearing assembly to enter and exit is opened on the front surface of the shell,

[0007] The bearing assembly includes a loading platform sliding on the top of the detection table, a pulling plate is fixed on the front end surface of the loading platform, and a positioning assembly is assembled on the top of the loading platform near the edge positions on both sides, a notch is reserved on the top of the loading platform, and side grooves are opened on both side walls of the notch, and two groups of guide plates extending into the side grooves are slidingly arranged in the notch, two groups of first hemispheres are fixed in a staggered state at both ends of the guide plates, and a plurality of groups of load-bearing strips are equidistantly fixed on the inner wall of the notch near the top position, two groups of scraping strips are arranged on the top of the guide plate, a base rod is fixed between the two groups of scraping strips, one end of the base rod passes through the scraping strip and is fixed to the inner wall of the shell, L strips are fixed at both ends of the scraping strip, and a second hemisphere is fixed on the side of the L strip close to the guide plate.

[0008] As a preferred technical solution for a precast concrete part strength testing device of the present invention, a discharge groove is provided at a position corresponding to the notch on the top of the testing platform, a collecting drawer corresponding to the discharge groove is slidably provided on the bottom of the testing platform, an electric push rod for pushing the rebound tester to lower is installed on the inner top of the shell, and a control panel for controlling the electric push rod is provided on the front surface of the shell.

[0009] As a preferred technical solution for a precast concrete component strength detection device of the present invention, two sets of springs fixed to the inner wall of the side groove are provided at both ends of the guide plate, and the springs and the first hemisphere are distributed in an up-and-down displaced state.

[0010] As a preferred technical solution for a concrete precast part strength testing device of the present invention, a clearance groove is provided on the front surface of the testing platform, a support beam fixed to the bottom of the pull plate is provided in the clearance groove, a reinforcing rod extending into the testing platform is fixed on one side of the support beam, and a blind hole for the reinforcing rod to slide is provided in the clearance groove.

[0011] As a preferred technical solution for a concrete precast part strength detection device of the present invention, the positioning assembly includes a base fixed to the top of a pull plate, an inner L-plate is slidably provided on the side of the base away from the inner wall of the outer shell, an outer L-plate in contact with the top of the pull plate is fixed to the top of the inner L-plate by bolts, a ball head rod is slidably provided in the base, one end of the ball head rod is fixed to the side wall of the base, and the other end of the ball head rod extends out of the outside of the base.

[0012] As a preferred technical solution of the concrete precast component strength detection device of the present invention, bevel strips are fixed at positions corresponding to the inner wall of the shell and the ball head rod.

[0013] As a preferred technical solution of the concrete precast component strength detection device of the present invention, a plurality of bolt holes are provided on the top of the inner L-plate.

[0014] In summary, the present invention mainly has the following beneficial effects:

[0015] The present invention cooperates with the bearing assembly and the housing so that the detection of the precast concrete parts is in a closed environment, which can better prevent the situation that the broken precast concrete parts injure people, so that the device is highly safe when performing the detection step, and with the movement of the stage entering and exiting the housing, the positioning assembly can be automatically driven to automatically position the precast concrete parts, ensuring that the precast concrete parts are in a stable state during the detection, and the positioning assembly can be adjusted according to the size of the precast concrete parts to be detected, so that the device has a wider range of applications;

[0016] When the present invention pulls the loading platform out of the outer shell to take out the inspected precast concrete part, since the scraper bar and the base rod are fixed to the shell, the scraper bar can block the sand and gravel particles falling from the top of the guide plate from the precast concrete part. As the loading platform gradually extends out of the shell, the particles on the top of the guide plate can be collected into the collection drawer, ensuring that no particles remain on the top of the loading platform, and ensuring that the subsequently inspected precast concrete parts are stably placed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 It is a three-dimensional unfolded view of the present invention;

[0019] Figure 3 It is a bottom view structural diagram of the detection platform of the present invention;

[0020] Figure 4 A front cutaway plan view of the present invention;

[0021] Figure 5 It is a structural diagram of the positioning assembly and the stage of the present invention;

[0022] Figure 6 A bottom view of the stage of the present invention;

[0023] Figure 7 It is a top view of a cutaway view of the stage of the present invention;

[0024] Figure 8 It is a schematic diagram of the scraper structure of the present invention;

[0025] Fig. 9 It is a planar structural diagram of the guide plate of the present invention;

[0026] Fig.10 A cutaway plan view of a positioning assembly of the present invention;

[0027] Fig.11 A side cutaway view of the test bench of the present invention;

[0028] Fig.12 It is a structural diagram of the detection platform and the shell of the present invention.

[0029] In the figure: 100, testing platform; 101, discharge slot; 200, bearing assembly; 300, positioning assembly;

[0030] 110, housing; 120, collecting drawer; 130, electric push rod; 140, rebound tester;

[0031] 210, pull plate; 220, support beam; 230, reinforcement rod; 240, loading platform; 241, notch; 242, side groove; 243, spring; 250, load-bearing bar; 260, guide plate; 261, first hemisphere; 270, scraper bar; 271, L bar; 272, second hemisphere; 280, base rod;

[0032] 310, base; 320, inner L plate; 330, outer L plate; 340, ball head rod; 350, bevel strip. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] The following describes an embodiment of the present invention based on its overall structure.

[0035] A device for testing the strength of precast concrete parts, such as Figures 1 to 12 As shown, the testing platform 100 includes a housing 110 mounted on the top of the testing platform 100, a rebound test hammer 140 for testing the strength of the precast concrete parts is mounted on the upper inner wall of the housing 110, a bearing assembly 200 is slidably mounted on the top of the testing platform 100, and a notch groove for the bearing assembly 200 to enter and exit is opened on the front surface of the housing 110.

[0036] The bearing assembly 200 includes a loading platform 240 that slides on the top of the testing platform 100. A pull plate 210 is fixed to the front end surface of the loading platform 240. A positioning assembly 300 is installed near the edges of both sides of the top of the loading platform 240. A notch 241 is reserved at the top of the loading platform 240. Side grooves 242 are provided on both side walls of the notch 241. Two sets of guide plates 260 extending into the side grooves 242 are slidably provided in the notch 241. The two ends of the guide plates 260 are offset. Two groups of first hemispheres 261 are fixed in the state, multiple groups of load-bearing bars 250 are fixed at equal distances on the inner wall of the notch 241 near the top position, two groups of scraping bars 270 are arranged on the top of the guide plate 260, a base rod 280 is fixed between the two groups of scraping bars 270, one end of the base rod 280 passes through the scraping bars 270 and is fixed to the inner wall of the housing 110, L bars 271 are fixed at both ends of the scraping bars 270, and a second hemisphere 272 is fixed on the side of the L bar 271 close to the guide plate 260;

[0037] A discharge slot 101 is provided at the top of the test platform 100 at a position corresponding to the notch 241, and a collecting drawer 120 corresponding to the discharge slot 101 is slidably provided at the bottom of the test platform 100. An electric push rod 130 for pushing the rebound tester 140 to lower is installed inside the housing 110, and a control panel for controlling the electric push rod 130 is provided on the front surface of the housing 110;

[0038] The positioning assembly 300 includes a base 310 fixed to the top of the pull plate 210, an inner L-plate 320 is slidably provided on the side of the base 310 away from the inner wall of the outer shell 110, an outer L-plate 330 in contact with the top of the pull plate 210 is fixed to the top of the inner L-plate 320 by bolts, a ball head rod 340 is slidably provided in the base 310, one end of the ball head rod 340 is fixed to the side wall of the base 310, and the other end of the ball head rod 340 extends out of the outside of the base 310, and a bevel strip 350 is fixed at the corresponding position of the inner wall of the outer shell 110 and the ball head rod 340.

[0039] The prefabricated concrete part to be inspected is placed on the top of the stage 240 and is located between the two groups of positioning components 300. The prefabricated concrete part is in contact with multiple groups of load-bearing bars 250. The sand and gravel particles falling from the outer wall of the prefabricated concrete part can pass through the gaps between the load-bearing bars 250 and enter the gap 241 until it is located on the top of the guide plate 260. At this time, a thrust can be applied to the pull plate 210 to make the stage 240 completely enter the shell 110. The pull plate 210 will fit with the shell 110 and form a sealed frame. At this time, the electric push rod 130 can be controlled to push the rebound tester 140 down to contact with the prefabricated concrete part for strength measurement. The measured data is displayed on the control panel. After the inspection is completed, an external force can be applied to the pull plate 210 towards the side close to the body to drive the stage 240 to slide on the top of the inspection table 100 until the prefabricated concrete part is exposed and removed.

[0040] When the stage 240 drives the precast concrete part into the shell 110, the ball head rod 340 contacts the bevel bar 350, generating a lateral thrust on the ball head rod 340, so that the inner L plate 320 and the outer L plate 330 move synchronously, and the outer L plate 330 gradually approaches the precast concrete part. As the stage 240 gradually enters the shell 110, the slope gradually increases, and the ball head rod 340 transitions from the bevel bar 350 slope to the horizontal plane, completing the clamping action of the precast concrete part, ensuring that it is in a stable state for detection;

[0041] When the stage 240 is pulled out along with the pulling plate 210, since the scraper strip 270 and the base rod 280 are fixed in the housing 110, the scraper strip 270 will block the sand and gravel particles and dust on the guide plate 260, and the sand and gravel particles and dust will fall from the edge of one side of the single set of guide plates 260 into the discharge slot 101, and finally enter the collection bin 120 for centralized collection, which is convenient for subsequent manual cleaning, so that the top of the stage 240 is in a clean state, thereby improving the efficiency of the inspection of the concrete precast parts in disguise;

[0042] The first hemisphere 261 moves synchronously with the guide plate 260. Since the second hemisphere 272 is fixed by the L fish scraper strips 270, the second hemisphere 272 will hinder the first hemisphere 261, causing the guide plate 260 to move laterally and cause the two to be misaligned. The spring 243 will reset the guide plate 260, and finally make the guide plate 260 move laterally intermittently, which can cooperate with the scraper strips 270 to achieve a better sand and gravel particle cleaning effect.

[0043] Please refer to Figure 7 Two sets of springs 243 fixed to the inner wall of the side groove 242 are provided at both ends of the guide plate 260, and the springs 243 and the first hemisphere 261 are distributed in a state of vertical displacement.

[0044] A restoring force is generated for the guide plate 260 after the lateral movement, so as to ensure that the guide plate 260 can intermittently sway laterally, so that the dust remaining on the top can slide to the low-lying area until it is discharged.

[0045] Please refer to Figure 2 and Figure 3 A clearance groove is provided on the front surface of the testing platform 100, in which a support beam 220 fixed to the bottom of the pull plate 210 is provided, a reinforcing rod 230 extending into the testing platform 100 is fixed on one side of the support beam 220, and a blind hole for the reinforcing rod 230 to slide is provided in the clearance groove.

[0046] It has the effect of strengthening the support for the loading platform 240 to ensure that it can bear the weight of the concrete prefabricated parts, and at the same time has the effect of guiding the loading platform 240 to enter the shell 110.

[0047] Please refer to Fig.10 A plurality of bolt holes are provided on the top of the inner L plate 320 .

[0048] The position between the inner L plate 320 and the outer L plate 330 can be changed to cope with the detection of precast concrete parts of various sizes.

[0049] When in use, the prefabricated concrete part to be tested is placed on the top of the stage 240 and is located between the two groups of positioning components 300, and the prefabricated concrete part is in contact with the multiple groups of load-bearing bars 250. The sand and gravel particles falling from the outer wall of the prefabricated concrete part can pass through the gaps between the load-bearing bars 250 and enter the gap 241 until they are located on the top of the guide plate 260. At this time, a thrust can be applied to the pull plate 210 to make the stage 240 completely enter the shell 110, and the pull plate 210 will fit with the shell 110 and form a sealed frame. At this time, the electric push rod 130 can be controlled to push the rebound tester 140 to lower and contact the prefabricated concrete part for strength measurement. The measured data is displayed on the control panel. After the test is completed, an external force can be applied to the pull plate 210 towards the side close to the body, so that it drives the stage 240 to slide on the top of the test bench 100 until the prefabricated concrete part is exposed and removed.

[0050] When the stage 240 drives the precast concrete part into the shell 110, the ball head rod 340 contacts the bevel bar 350, generating a lateral thrust on the ball head rod 340, so that the inner L plate 320 and the outer L plate 330 move synchronously, and the outer L plate 330 gradually approaches the precast concrete part. As the stage 240 gradually enters the shell 110, the slope gradually increases, and the ball head rod 340 transitions from the bevel bar 350 slope to the horizontal plane, completing the clamping action of the precast concrete part, ensuring that it is in a stable state for detection;

[0051] When the stage 240 is pulled out along with the pulling plate 210, since the scraper strip 270 and the base rod 280 are fixed in the housing 110, the scraper strip 270 will block the sand and gravel particles and dust on the guide plate 260, and the sand and gravel particles and dust will fall from the edge of one side of the single set of guide plates 260 into the discharge slot 101, and finally enter the collection bin 120 for centralized collection, which is convenient for subsequent manual cleaning, so that the top of the stage 240 is in a clean state, thereby improving the efficiency of the inspection of the concrete precast parts in disguise;

[0052] The first hemisphere 261 moves synchronously with the guide plate 260. Since the second hemisphere 272 is fixed by L fish scraper strips 270, the second hemisphere 272 will hinder the first hemisphere 261, causing the guide plate 260 to move laterally to cause the two to be misaligned, and then reset under the action of the spring 243, finally causing the guide plate 260 to move laterally intermittently, which can cooperate with the scraper strips 270 to achieve a better sand and gravel particle cleaning effect. The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology.

[0053] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A strength testing device for precast concrete parts, comprising a testing platform (100), characterized in that: The top of the testing platform (100) is equipped with a shell (110), the upper inner wall of the shell (110) is equipped with a rebound hammer (140) for testing the strength of the precast concrete parts, the top of the testing platform (100) is slidably equipped with a bearing assembly (200), and a notch groove for the bearing assembly (200) to enter and exit is provided on the front surface of the shell (110). The bearing assembly (200) comprises a loading platform (240) which slides on the top of the detection platform (100), a pull plate (210) is fixed on the front end surface of the loading platform (240), a positioning assembly (300) is installed on the top of the loading platform (240) near the two side edges, a notch (241) is reserved on the top of the loading platform (240), side grooves (242) are provided on both side walls of the notch (241), two groups of guide plates (260) extending into the side grooves (242) are slidably provided in the notch (241), and the two ends of the guide plates (260) are offset. Two groups of first hemispheres (261) are fixed in a state, a plurality of groups of load-bearing strips (250) are fixed at equal distances on the inner wall of the notch (241) near the top position, two groups of scraping strips (270) are arranged on the top of the guide plate (260), a base rod (280) is fixed between the two groups of scraping strips (270), one end of the base rod (280) passes through the scraping strip (270) and is fixed to the inner wall of the shell (110), L strips (271) are fixed at both ends of the scraping strip (270), and a second hemisphere (272) is fixed on one side of the L strip (271) close to the guide plate (260).

2. A device for detecting strength of precast concrete parts according to claim 1, characterized in that: A discharge groove (101) is provided at a position corresponding to the notch (241) on the top of the testing platform (100), a collecting drawer (120) corresponding to the discharge groove (101) is slidably provided on the bottom of the testing platform (100), an electric push rod (130) for pushing the rebound tester (140) to lower is installed on the inner top of the housing (110), and a control panel for controlling the electric push rod (130) is provided on the front surface of the housing (110).

3. The device for detecting strength of precast concrete parts according to claim 1, characterized in that: Two groups of springs (243) fixed to the inner wall of the side groove (242) are provided at both ends of the guide plate (260), and the springs (243) and the first hemisphere (261) are distributed in a state of vertical displacement.

4. The device for detecting strength of precast concrete parts according to claim 1, characterized in that: The front surface of the testing platform (100) is provided with a clearance groove, in which a support beam (220) fixed to the bottom of the pull plate (210) is provided, a reinforcing rod (230) extending into the testing platform (100) is fixed on one side of the support beam (220), and a blind hole for the reinforcing rod (230) to slide is provided in the clearance groove.

5. The device for detecting strength of precast concrete parts according to claim 1, characterized in that: The positioning assembly (300) includes a base (310) fixed to the top of the pull plate (210), an inner L-plate (320) is slidably provided on the side of the base (310) away from the inner wall of the shell (110), an outer L-plate (330) in contact with the top of the pull plate (210) is fixed to the top of the inner L-plate (320) by bolts, a ball head rod (340) is slidably provided inside the base (310), one end of the ball head rod (340) is fixed to the side wall of the base (310), and the other end of the ball head rod (340) extends out of the outside of the base (310).

6. A strength detection device for precast concrete parts according to claim 5, characterized in that: A bevel strip (350) is fixed at a position corresponding to the inner wall of the housing (110) and the ball head rod (340).

7. The device for detecting strength of precast concrete parts according to claim 5, characterized in that: A plurality of bolt holes are formed on the top of the inner L-plate (320).

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