A test device for detecting the bearing capacity of plate-type embedded parts

Abstract

This utility model discloses a testing device for detecting the bearing capacity of plate-type embedded parts, including an electrical control system, a test frame, and a drive component, a lifting rod, a magnetic attractor, and a displacement sensor mounted on the test frame. The displacement sensor is used to detect the displacement of the embedded plate in the direction of force. The electrical control system is electrically connected to the drive component and controls its start and stop. The bottom of the lifting rod is connected to the upper end of the magnetic attractor, and the drive component is connected to the upper end of the lifting rod and drives the lifting rod to rise and fall. The magnetic attractor includes a main body and a magnetic attracting module. The displacement sensor is mounted on the main body, and the magnetic attracting module is detachably fixed to the bottom surface of the main body. The magnetic attracting module can be used to attract the plate-type embedded part to be tested. The magnetic attracting module includes several magnetic attracting units detachable from the main body, and the magnetic attracting units are arranged in a matrix. The plate-type embedded part is subjected to uniform force, avoiding the single-point force situation in existing tests, thereby avoiding damage to the plate-type embedded part during the test.

Description

Technical Field

[0001] This utility model belongs to the field of embedded parts testing, specifically relating to a test device for testing the bearing capacity of plate-type embedded parts. Background Technology

[0002] Currently, for older buildings undergoing secondary renovations, actual pull-out testing of steel plate embedded parts can confirm whether the load-bearing capacity of the part is within the design range, allowing for timely elimination of safety hazards. One current testing method involves welding reinforcing bars for pull-out testing, followed by cutting. This method can cause damage to the embedded part itself, and the single-point stress testing method does not accurately reflect the actual overall stress. This project aims to research a magnetic suction technology testing device for plate-type embedded parts and post-installed embedded parts.

[0003] Therefore, a new technology is needed to solve the problem of how to avoid damage to embedded parts during load-bearing capacity tests in existing technologies. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a testing device for detecting the bearing capacity of plate-type embedded parts. The plate-type embedded parts are subjected to uniform force, avoiding the single-point force situation in existing tests, thereby preventing damage to the plate-type embedded parts during the test.

[0005] The present invention adopts the following technical solution:

[0006] A test device for detecting the bearing capacity of plate-type embedded parts includes an electrical control system, a test frame, and a drive component, a lifting rod, a magnetic attractor, and a displacement sensor mounted on the test frame. The displacement sensor is used to detect the displacement of the embedded part in the direction of force.

[0007] The electronic control system is electrically connected to the drive component and is used to control the start and stop of the drive component; the bottom of the lifting rod is connected to the upper end of the magnetic chuck, and the drive component is connected to the upper end of the lifting rod and is used to drive the lifting rod to rise and fall;

[0008] The magnetic attractor includes a main body and a magnetic attracting module. The displacement sensor is mounted on the main body. The magnetic attracting module is detachably fixed to the bottom surface of the main body. The magnetic attracting module can be used to attract the plate-type embedded parts to be tested. The magnetic attracting module includes several magnetic attracting units that are detachably connected to the main body. The several magnetic attracting units are arranged in a matrix.

[0009] As a further improvement to the technical solution of this utility model, the main body is box-shaped, and a base plate is provided at the bottom of the main body. The displacement sensor is located inside the main body and installed on the base plate, and each of the magnetic suction units can be detachably installed on the bottom surface of the base plate.

[0010] As a further improvement to the technical solution of this utility model, it also includes a connecting ring. The upper end of the main body is provided with a lifting ring. The upper end of the connecting ring is detachably fixedly connected to the lifting rod, and the lower end passes through the lifting ring and is detachably fixedly connected to the lifting ring.

[0011] As a further improvement to the technical solution of this utility model, it also includes a fixing nut, which is installed at the output end of the drive component; the lifting rod is a screw rod, the upper end of the lifting rod is adapted to the fixing nut and threadedly connected to the fixing nut, and the lower end of the lifting rod is threadedly connected to the connector.

[0012] As a further improvement to the technical solution of this utility model, the adapter includes a first connecting part and a second connecting part fixedly connected from top to bottom. The first connecting part is provided with an external thread on its outer side, and the second connecting part is provided with a through hole horizontally through which the upper end of the connecting ring can pass.

[0013] It also includes a fixing sleeve, the upper end of which is fixedly connected to the bottom end of the lifting rod, and the lower end of which has a threaded hole that is threadedly connected to the first connecting part.

[0014] As a further improvement to the technical solution of this utility model, the lifting ring includes a lifting body and a first connecting bolt. The lifting body is in the shape of an inverted U. Both ends of the lifting body are provided with first connecting holes. The axes of the two first connecting holes coincide. The first connecting bolt passes horizontally through the two first connecting holes and is detachably fixed to the lifting body. A lifting hole is formed between the lifting body and the first connecting bolt, through which the connecting ring can pass.

[0015] The upper end of the main body is provided with a connecting protrusion, which is located between the two ends of the hoisting body and allows the first connecting bolt to pass through.

[0016] As a further improvement to the technical solution of this utility model, the connecting ring includes a connecting body and a second connecting bolt. The connecting body is in the shape of an inverted U. The connecting body can pass through the through hole. A second connecting hole is provided at both ends of the connecting body. The axes of the two second connecting holes coincide. The second connecting bolt passes horizontally through the two second connecting holes and is detachably fixed to the connecting body.

[0017] The first connecting bolt can pass through the lifting hole, and the upper part of the lifting body is located between the two second connecting holes.

[0018] As a further improvement to the technical solution of this utility model, the test frame includes a top plate and several parallel and spaced support columns. Each support column is vertically arranged and its upper end is detachably fixed to the top plate. The driving component is installed on the upper end of the top plate. The top plate has a through hole for the lifting rod to pass through. The fixing sleeve is located below the top plate.

[0019] As a further improvement to the technical solution of this utility model, the driving component is a jack.

[0020] As a further improvement to the technical solution of this utility model, it also includes a control box, which is equipped with a display screen, indicator lights, a power supply and an operation module. The display screen, indicator lights and operation module are all installed outside the control box.

[0021] The electrical control system is installed inside the control box.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The test device for testing the bearing capacity of plate-type embedded parts in this scheme uses a magnetic chuck to magnetically connect with the plate-type embedded parts. Several magnetic modules at the bottom of the magnetic chuck body are arranged in a matrix. Some of the magnetic modules corresponding to the embedded parts contact and magnetically connect with the embedded parts, so that the plate-type embedded parts are subjected to uniform force, avoiding the single-point force situation in existing tests. This avoids damage to the plate-type embedded parts during the test and can more realistically simulate the stress situation of the embedded parts in actual use, ensuring that the measurement results of the plate-type embedded parts are more realistic and accurate. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the test fixture structure;

[0027] Figure 3 This is a schematic diagram of the fixed nut structure;

[0028] Figure 4 This is a schematic diagram of the jack structure;

[0029] Figure 5 This is a schematic diagram of the lifting boom structure;

[0030] Figure 6 This is a schematic diagram of the adapter head structure;

[0031] Figure 7 This is a schematic diagram of the lifting ring structure;

[0032] Figure 8 This is the front view of the magnetic cassette;

[0033] Figure 9 This is a side view of the magnetic clasp;

[0034] Figure 10 This is a top view of the magnetic accelerator;

[0035] Figure 11 This is a bottom view of the magnetic chuck.

[0036] Figure label:

[0037] 1-Test rack; 11-Top plate; 12-Support column;

[0038] 2-Driver component; 21-Fixing nut; 22-Center hole;

[0039] 3-Lifting rod; 31-Fixing sleeve;

[0040] 4-Adapter head; 41-First connecting part; 42-Second connecting part; 421-Through hole;

[0041] 5-Connecting ring;

[0042] 6-Magnetic suction device; 61-Lifting ring; 611-Lifting body; 6112-First connecting bolt; 613-Lifting hole; 62-Main body; 621-Connecting protrusion; 622-Magnetic suction module; 6221-Magnetic suction unit; 62211-Positioning protrusion; 623-Guide groove. Detailed Implementation

[0043] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0044] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0045] Reference Figures 1 to 11A testing device for detecting the bearing capacity of plate-type embedded parts includes an electrical control system, a test frame 1, and a drive component 2, a lifting rod 3, a magnetic attractor 6, and a displacement sensor mounted on the test frame 1. The displacement sensor is used to detect the displacement of the embedded part in the direction of force. The electrical control system is electrically connected to the drive component 2 and is used to control the start and stop of the drive component 2. The bottom of the lifting rod 3 is connected to the upper end of the magnetic attractor 6, and the drive component 2 is connected to the upper end of the lifting rod 3 and is used to drive the lifting rod 3 to rise and fall. The magnetic attractor 6 includes a main body 62 and a magnetic attraction module 622. The displacement sensor is mounted on the main body 62, and the magnetic attraction module 622 is detachably fixed to the bottom surface of the main body 62. The magnetic attraction module 622 can be used to attract the plate-type embedded part to be tested. The magnetic attraction module 622 includes several detachable magnetic attraction units 6221, which are arranged in a matrix. The magnetic module 622 consists of multiple detachable magnetic units 6221. By adjusting the number of magnetic units 6221 to match the shape of the embedded plate to be tested, the magnetic units 6221 that are not in contact with the embedded plate can be detached, leaving only a portion of the magnetic units 6221 that are in contact with the embedded plate. This portion of the magnetic units 6221 is adapted to the shape of the embedded plate to be tested. The upper end of each magnetic unit 6221 is detachably fixed to the bottom surface of the main body 62. Each magnetic unit 6221 is magnetic and can attract the plate-type embedded part to be tested, allowing the plate-type embedded part to be magnetically connected to the magnetic unit 6221.

[0046] Since each magnetic unit 6221 is detachably fixed to the bottom surface of the main body 62, several magnetic units 6221 can be arranged in a matrix at the bottom of the column. During use, magnetic units 6221 that do not contact the embedded plate can be disassembled to adjust the size of the magnetic module 622 to fit the embedded plate. Multiple magnetic units 6221 corresponding to the plate-type embedded part are connected to the plate-type embedded part through magnetic attraction, resulting in uniform force distribution on the plate-type embedded part. The multiple magnetic units 6221 connected to the plate-type embedded part form multiple stress points on the plate-type embedded part, avoiding the single-point stress situation in existing tests. This prevents damage to the plate-type embedded part during testing and more realistically simulates the stress conditions of the embedded part in actual use, ensuring more accurate and realistic measurement results for the plate-type embedded part.

[0047] Specifically, the bottom surface of the main body 62 is provided with a plurality of downward-facing guide grooves 623 at even intervals. The guide grooves 623 are parallel to each other and horizontally arranged. The vertical cross-section of each guide groove 623 in the direction perpendicular to its length can be referred to Figure 9The width of the guide groove 623 opening is smaller than the width inside the guide groove 623. The length direction of the guide grooves 623 can be selected according to the actual situation. At least one of the two ends of each guide groove 623 in the length direction is provided with an opening. Each magnetic attraction unit 6221 has a positioning protrusion 62211 protruding from its upper end. The upper width of each positioning protrusion 62211 is greater than its lower width. The upper width of each positioning protrusion 62211 is adapted to the width inside the guide groove 623, and the lower width is adapted to the width of the guide groove 623 opening. Each positioning protrusion 62211 can be horizontally embedded into a guide groove 623 through an opening at one end of the guide groove 623. The positioning protrusion 62211 will not detach downwards from the opening of the guide groove 623. Each positioning protrusion 62211 can slide along the corresponding guide groove 623, thereby driving the magnetic suction unit 6221 to slide along the guide groove 623, thus adjusting the position of the magnetic suction unit 6221. This allows for the arrangement of several magnetic suction units 6221 to be similar in shape to the embedded plate to be tested. The guide grooves 623 are continuous at both ends along their length, or one end is open and the other end is closed. Removable bolts or stops can be installed at the horizontal opening of the guide groove 623 as needed to prevent the positioning protrusion 62211 from detaching from the opening during testing.

[0048] Specifically, the main body 62 is box-shaped, and a base plate is provided at the bottom of the main body 62. The displacement sensor is located inside the main body 62 and installed on the base plate, and the magnetic suction module 622 is installed on the bottom surface of the base plate.

[0049] Specifically, the test device for testing the bearing capacity of plate-type embedded parts in this scheme also includes a connecting ring 5. The upper end of the main body 62 is provided with a lifting ring 61. The upper end of the connecting ring 5 is detachably fixedly connected to the lifting rod 3, and the lower end passes through the lifting ring 61 and is detachably fixedly connected to the lifting ring 61.

[0050] Specifically, the test device for detecting the bearing capacity of plate-type embedded parts in this solution also includes a fixing nut 21, which is installed at the output end of the drive component 2; the lifting rod 3 is a screw rod, the upper end of the lifting rod 3 is adapted to the fixing nut 21 and threadedly connected to the fixing nut 21, and the lower end of the lifting rod 3 is threadedly connected to the connector.

[0051] Specifically, the adapter 4 includes a first connecting part 41 and a second connecting part 42 fixedly connected from top to bottom. The first connecting part 41 has an external thread on its outer side, and the second connecting part 42 has a through hole 421 horizontally through which the upper end of the connecting ring 5 can pass. The test device for detecting the bearing capacity of plate-type embedded parts in this solution also includes a fixing sleeve 31. The upper end of the fixing sleeve 31 is fixedly connected to the bottom end of the lifting rod 3, and the lower end has a threaded hole that is threadedly connected to the first connecting part 41.

[0052] Specifically, the lifting ring 61 includes a lifting body 611 and a first connecting bolt 6112. The lifting body 611 is inverted U-shape, and both ends of the lifting body 611 have first connecting holes with coincident axes. The first connecting bolt 6112 passes horizontally through the two first connecting holes and is detachably fixed to the lifting body 611. A lifting hole 613 is formed between the lifting body 611 and the first connecting bolt 6112, through which the connecting ring 5 can pass. The upper end of the main body 62 has a connecting protrusion 621, which is located between the two ends of the lifting body 611 and allows the first connecting bolt 6112 to pass through.

[0053] Specifically, the connecting ring 5 includes a connecting body and a second connecting bolt. The connecting body is inverted U-shape and can pass through the through hole 421. Each end of the connecting body has a second connecting hole with the axes of the two second connecting holes coinciding. The second connecting bolt passes horizontally through the two second connecting holes and is detachably fixed to the connecting body. The first connecting bolt 6112 can pass through the lifting hole 613, and the upper part of the lifting body 611 is located between the two second connecting holes.

[0054] Specifically, the test frame 1 includes a top plate 11 and a number of parallel and spaced support columns 12. Each support column 12 is vertically arranged and its upper end is detachably fixed to the top plate 11. The driving component 2 is installed on the upper end of the top plate 11. The top plate 11 has a through hole for the lifting rod 3 to pass through. The fixing sleeve 31 is located below the top plate 11.

[0055] Specifically, the driving component 2 is a jack, such as an electric jack, and the jack is equipped with a pressure gauge.

[0056] Specifically, the jack has a vertical center hole 22 in the middle, and a fixing nut 21 is installed above the jack with a diameter larger than that of the center hole 22. The upper end of the screw passes through the center hole 22 and is threaded to the fixing nut 21, while the lower end protrudes from the jack and passes through the top plate 11 and is connected to the magnetic attractor 6 via the connecting ring 5.

[0057] Specifically, the test device for detecting the bearing capacity of plate-type embedded parts in this scheme also includes a control box. The electrical control system is installed inside the control box. The control box is equipped with a display screen, indicator lights, power supply, operation module, and other necessary related circuit components. The display screen, indicator lights, and operation module are all installed outside the control box. The displacement measurement values ​​of the displacement sensor are displayed on the display screen. The electrical connections of the above circuit components adopt conventional circuit design.

[0058] Specifically, the electronic control system includes a magnetic control module, a displacement measurement module, and a pressure control module installed in the control box. The electronic control system integrates magnetic control, displacement measurement, and pressure control. It is connected to the embedded plate through magnetic force. According to the data displayed on the screen, the operation module can set various data required for the test and control the oil pressure of the jack during the test. The displacement sensor can be selected to be a displacement sensor that can automatically calculate the displacement, so as to control the detection based on the oil pressure change and displacement.

[0059] When testing the mechanical properties of embedded parts and post-installed embedded parts, the electronic control system controls the magnetic chuck 6 to control the embedded plate and the jack to apply pressure. The jack generates a force parallel to the anchoring direction of the embedded part. Simultaneously, displacement measurement is performed through the displacement sensor of the magnetic chuck 6. The electronic control system judges the bearing capacity of the embedded plate and post-installed embedded parts by the changes in displacement and pressure, and controls the progress and stop of the test. The electronic control system can use conventional chips, and the related circuits can use conventional circuit design.

[0060] The test device for testing the bearing capacity of plate-type embedded parts using this scheme has a magnetic suction module 622 that contacts and magnetically connects with the plate-type embedded parts. During the bearing capacity test, pressure is applied to the jack through the electronic control system, and the plate-type embedded parts and post-embedded parts are subjected to force loading through the magnetic suction device 6. (Refer to...) Figure 1 The jack applies an upward force to the fixing nut 21, and applies an upward force to the embedded part through the magnetic suction device 6 connected to the lower end of the lifting rod 3. During the loading process, the displacement of the embedded part in the direction of force is measured by the displacement sensor installed on the magnetic suction device 6. The test device for detecting the bearing capacity of plate-type embedded parts using this scheme can be tested using the following implementation method:

[0061] Example 1

[0062] In this embodiment, the testing device for detecting the bearing capacity of plate-type embedded parts is used to conduct a bearing capacity test on the plate-type embedded parts. The pressure is applied to the jacks via an electrical control system in a continuous loading manner, loading to the set test load at a uniform rate within 2-3 minutes, and then held for 2 minutes. During this 2-minute holding period, if the pressure gauge on the jack drops by less than or equal to 5% of the test load within 2 minutes, it is considered to meet the bearing capacity requirements; otherwise, it does not meet the requirements. During the test, the required test load, the loading time to reach the test load, and the holding time after reaching the test load can be set via the display screen on the control box. This test process does not damage the plate-type embedded parts and can more realistically simulate the stress conditions of the embedded parts in actual use, resulting in more accurate and reliable measurement results.

[0063] Example 2

[0064] In this embodiment, unlike Embodiment 1, the pressure applied to the jack is applied in stages via an electronic control system. The set test load is divided into 10 levels, each held for 1 minute, until the set test load is reached, which is then held for 2 minutes. During this 2-minute holding period, if the displacement value is less than 1 / 250 of the side length of the plate-type embedded part and the post-installed embedded part, the bearing capacity meets the requirements; otherwise, it does not meet the bearing capacity requirements. Specifically, after each load level, the load is held for 1 minute before proceeding to the next level, and the holding time after reaching the set test load is 2 minutes. Furthermore, during the test, the required test load, the number of loading cycles or levels required to reach the test load, the loading time for each level or cycle, and the holding time after reaching the corresponding load can be set via the display screen on the control box. This test process does not damage the plate-type embedded part and can more realistically simulate the stress conditions of the embedded part in actual use, resulting in more accurate and realistic measurement results for the plate-type embedded part.

[0065] Other aspects of the test device for detecting the bearing capacity of plate-type embedded parts described in this utility model are referred to in the prior art and will not be repeated here.

[0066] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A test device for detecting the load bearing capacity of a plate-type embedded part, characterized by: It includes an electronic control system, a test frame, and a drive unit, a lifting rod, a magnetic attractor, and a displacement sensor mounted on the test frame. The displacement sensor is used to detect the displacement of the embedded part in the direction of force. The electronic control system is electrically connected to the drive component and is used to control the start and stop of the drive component; the bottom of the lifting rod is connected to the upper end of the magnetic chuck, and the drive component is connected to the upper end of the lifting rod and is used to drive the lifting rod to rise and fall; The magnetic attractor includes a main body and a magnetic attracting module. The displacement sensor is mounted on the main body. The magnetic attracting module is detachably fixed to the bottom surface of the main body. The magnetic attracting module can be used to attract the plate-type embedded parts to be tested. The magnetic attracting module includes several magnetic attracting units that are detachably connected to the main body. The several magnetic attracting units are arranged in a matrix.

2. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 1, characterized in that: The main body is box-shaped, and a base plate is provided at the bottom of the main body. The displacement sensor is located inside the main body and is installed on the base plate. Each of the magnetic suction units can be detachably installed on the bottom surface of the base plate.

3. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 2, characterized in that: It also includes a connecting ring. The upper end of the main body is provided with a lifting ring. The upper end of the connecting ring is detachably fixedly connected to the lifting rod, and the lower end passes through the lifting ring and can be detachably fixedly connected to the lifting ring.

4. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 3, characterized in that: It also includes a fixing nut and an adapter, the fixing nut being installed at the output end of the drive component; the lifting rod is a screw rod, the upper end of the lifting rod being adapted to the fixing nut and threadedly connected to the fixing nut, the lower end of the lifting rod being threadedly connected to the adapter, and the lower end of the adapter being connected to the connecting ring.

5. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 4, characterized in that: The adapter includes a first connecting part and a second connecting part fixedly connected from top to bottom. The first connecting part is provided with an external thread on its outer side, and the second connecting part is provided with a through hole horizontally through which the upper end of the connecting ring can pass. It also includes a fixing sleeve, the upper end of which is fixedly connected to the bottom end of the lifting rod, and the lower end of which has a threaded hole that is threadedly connected to the first connecting part.

6. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 5, characterized in that: The lifting ring includes a lifting body and a first connecting bolt. The lifting body is in the shape of an inverted U. Both ends of the lifting body are provided with first connecting holes. The axes of the two first connecting holes coincide. The first connecting bolt passes horizontally through the two first connecting holes and is detachably fixed to the lifting body. A lifting hole is formed between the lifting body and the first connecting bolt, through which the connecting ring can pass. The upper end of the main body is provided with a connecting protrusion, which is located between the two ends of the hoisting body and allows the first connecting bolt to pass through.

7. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 6, characterized in that: The connecting ring includes a connecting body and a second connecting bolt. The connecting body is in the shape of an inverted U and can pass through the through hole. A second connecting hole is provided at both ends of the connecting body. The axes of the two second connecting holes coincide. The second connecting bolt passes horizontally through the two second connecting holes and is detachably fixed to the connecting body. The first connecting bolt can pass through the lifting hole, and the upper part of the lifting body is located between the two second connecting holes.

8. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 7, characterized in that: The test frame includes a top plate and several parallel and spaced support columns. Each support column is vertically arranged and its upper end is detachably fixed to the top plate. The drive component is installed on the upper end of the top plate. The top plate has a through hole for the lifting rod to pass through. The fixing sleeve is located below the top plate.

9. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 8, characterized in that: The driving component is a jack.

10. The test device for detecting the load bearing capacity of a plate-type embedded part according to claim 1, characterized in that: It also includes a control box, which is equipped with a display screen, indicator lights, a power supply and an operation module. The display screen, indicator lights and operation module are all installed outside the control box; the electrical control system is installed inside the control box.

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