Anchor rod pull-out test device
By designing an anchor rod pull-out test device with universal bamboo layer and fastener plate sliding part, the problem of inaccurate measurement in existing devices in complex environments is solved, and higher testing accuracy and device are achieved stability.
Patent Information
- Application Number
- CN202323623786.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing anchor pull-out test devices are prone to inclination and offset in complex environments, resulting in inaccurate measurement results and are prone to damage under long-term high load use.
An anchor rod anti-extraction test device including a support base, a jack and a fixed bracket is designed. The bottom of the support base is equipped with a universal bamboo joint layer to adjust the orientation. The top of the jack is equipped with a fastening plate and a sliding part, the fastening plate and the anchor are installed. The rod is always vertical, and the sliding part is slidally connected to the slide chute, and the displacement data of the anchor rod is obtained by measuring the moving distance of the sliding part.
The device maintains stability in an uneven environment, ensuring the accuracy and reliability of the measurement results, avoiding measurement deviations caused by the inclination of the anchor, and improving the accuracy of the test.
Smart Images
Figure CN222506006U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pull-out resistance detection, in particular to an anchor pull-out resistance test device. Background Art
[0002] Anchor rods are one of the basic structures used in engineering technology to reinforce slopes, tunnels, dams, etc. The function of anchor rods is to reinforce the surrounding rock of the tunnel so that the surrounding rock can support itself. After the construction of anchor rods is completed, the pull-out performance of anchor rods is an important reflection of their construction quality. Therefore, it is necessary to use anchor rod pull-out tester to test their pull-out performance.
[0003] Existing pull-out test devices are usually set on both sides of the anchor rod, and load is applied to the anchor rod through a jack or other device to test the displacement distance of the anchor rod. Since the construction site environment is usually complex, there may be debris such as gravel around the anchor rod, which makes the ground around the anchor rod uneven, causing the test device to tilt when it is fixed, and the measurement result is inaccurate. In addition, the test device is easily damaged under long-term high-load use; secondly, since the anchor rod is fixed on the ground, it may cause a certain tilt and offset during pulling, so that the anchor rod cannot always remain perpendicular to the test device, resulting in a deviation between the measured displacement data and the actual displacement distance, affecting the accuracy of the test. Utility Model Content
[0004] The utility model aims to provide an anchor rod pull-out test device with strong applicability and high accuracy.
[0005] A device for testing the pull-out resistance of an anchor rod comprises a support base, a jack and a fixed bracket, wherein the support base is provided with an anchor hole for the anchor rod to pass through, the bottom surface of the support base is provided with a universal bamboo joint layer, the jack and the fixed bracket are arranged on the support base, the top of the jack is provided with a fastening plate, the fastening plate is provided with a fastener for locking the anchor rod, protruding sliding parts are provided on both sides of the fastening plate, and sliding grooves cooperating with the sliding parts are provided on both sides of the fixed bracket, the sliding part is inserted into the sliding groove and is slidably connected with the sliding groove.
[0006] The above technical scheme involves an anchor pull-out test device for testing the pull-out performance of the anchor, including a support base, a jack and a fixed bracket are both arranged on the support base, a universal bamboo layer is arranged at the bottom of the support base, the universal bamboo layer can flexibly adjust the orientation of the support base, and can effectively ensure the stability of the support base when the surrounding environment of the test anchor is uneven, and is suitable for testing work in various environments, a plurality of anchor holes are opened on the support base for the tested anchor to pass through, a fastening plate is connected to the top of the jack, and the jack can provide a pulling force for the pull-out test by lifting the fastening plate, and a plurality of fasteners for locking the anchor are arranged on the fastening plate, so that the anchor is fixedly connected to the fastening plate to prevent the anchor from sliding relative to the fastening plate during the test. This causes errors in displacement data and affects the test results. Protruding sliding parts are provided on both sides of the fastening plate, and the fixed bracket is provided with two vertical plates, which are respectively located on both sides of the fastening plate. A sliding groove matching the sliding part is provided on the vertical plate, and a sliding connection is formed between the sliding part and the sliding groove. When the jack lifts the fastening plate, the displacement data of the anchor rod after being pulled is obtained by measuring the moving distance of the sliding part in the sliding groove. By converting the displacement of the anchor rod into the moving distance of the sliding part, it is more convenient to measure the moving distance of the sliding part than to measure the displacement of the anchor rod. Moreover, since the fastening plate and the anchor rod are always kept vertical, it can be ensured that the displacement of the anchor rod in the axial direction is always measured, and it will not be affected by the slight tilt of the anchor rod during the pulling process. The data is more accurate and the test accuracy is higher.
[0007] Furthermore, as a preferred technical solution, the universal bamboo joint layer is arranged at the edge position of the bottom surface of the support base.
[0008] In the above technical solution, the universal bamboo joint layer is arranged at the edge of the bottom surface of the supporting base, and a hollow part is left in the center for the anchor rod to pass through.
[0009] Furthermore, as a preferred technical solution, the jack is a through-type jack.
[0010] In the above technical solution, the jack is a through-type jack, and the jack is arranged at the anchor hole position of the supporting base. The anchor rod passes through the jack from the bottom of the jack and is connected to the fastening plate on the top of the jack.
[0011] Furthermore, as a preferred technical solution, a sensing block is provided at one end of the sliding portion extending out of the sliding slot.
[0012] In the above technical solution, a sensing block is installed at one end of the sliding part extending out of the slide slot. The displacement sensor obtains the actual displacement distance of the anchor rod by measuring the moving distance of the center of the sensing block, which will not be affected by the tilt and has higher accuracy.
[0013] Furthermore, as a preferred technical solution, a displacement sensor is provided on the surface of the fixing bracket close to the sensing block.
[0014] In the above technical solution, a displacement sensor is provided on the vertical plate of the fixed bracket. The displacement sensor is located on the surface of the vertical plate close to the sensing block. The displacement sensor is used to measure the displacement distance of the sensing block, thereby obtaining the actual displacement distance of the anchor rod after being subjected to a pulling force.
[0015] Furthermore, as a preferred technical solution, the fixing bracket includes a crossbeam, the crossbeam is located above the fastening plate, a pressing drive member is provided on the top of the crossbeam, and a driving end of the pressing drive member passes through the crossbeam.
[0016] In the above technical solution, the fixed bracket includes a cross beam, both ends of which are fixedly connected to the tops of the vertical plates on both sides. The cross beam is arranged above the fastening plate, and a pressing drive component is installed on the top of the cross beam. The driving end of the pressing drive component passes through the cross beam, so that a certain pressure can be applied to the fastening plate. After the anchor rod passes through the fastener, the fastening plate is pressed down by the pressing drive component, so that the fastener on the fastening plate and the anchor rod are fully fixed, thereby ensuring the accuracy of subsequent test results.
[0017] Furthermore, as a preferred technical solution, the fastening plate is provided with a plurality of mounting holes, and the fasteners are arranged in the mounting holes.
[0018] In the above technical solution, a plurality of mounting holes matching with the fasteners are opened on the fastening plate, and a fastener is arranged in each mounting hole. The fastener and the mounting hole have an interference fit to prevent the fastener from falling out, thereby ensuring the connection and fixing effect between the fastening plate and the anchor rod.
[0019] Further, as a preferred technical solution, the fastener includes a fixing ring and a plurality of locking blocks, the locking blocks are distributed around the inner side of the fixing ring, and the fixing ring is arranged in the mounting hole.
[0020] In the above technical solution, the fastener includes a fixing ring and a plurality of locking blocks. The locking block is an inclined block structure separated from a truncated cone structure, and its top radius is smaller than the bottom radius. The locking block is arranged in the fixing ring. After the locking blocks are combined, a circular hole for the anchor rod is left in the middle. When the pull-out test is performed, the anchor rod extends from the bottom of the fastener and passes through the fastener. Then, the locking block is pressed down by the pressing drive member to retract the locking block inward, thereby locking the anchor rod in the middle, so that it is fixedly connected to the fastening plate and relative sliding does not occur, thereby ensuring the accuracy of the test results.
[0021] Furthermore, as a preferred technical solution, a surface of the locking block on one side away from the fixing ring is provided with a thread.
[0022] In the above technical solution, the inner surface of the locking block is provided with threads. By providing the threads, the friction between the locking block and the anchor rod after being combined is increased to prevent relative sliding, thereby effectively improving the fixing effect.
[0023] The utility model has the following beneficial effects:
[0024] It has strong applicability. The present application provides a universal bamboo joint layer at the bottom of the support base. The universal bamboo joint layer can adjust the orientation of the support base with high flexibility. It can effectively ensure the stability of the support base when the environment around the anchor rod is uneven. It is suitable for testing work in various environments and has good applicability.
[0025] High accuracy. The present application converts the displacement of the anchor rod into the moving distance of the sliding part by setting a fastening plate and its sliding part. Compared with measuring the displacement of the anchor rod, measuring the moving distance of the sliding part is more convenient. Moreover, since the fastening plate and the anchor rod are always kept perpendicular, it can be ensured that the axial displacement of the anchor rod is always measured, and it will not be affected by the slight tilt of the anchor rod during the pulling process. The test accuracy is higher and the reliability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a stereoscopic diagram of an anchor pull-out test device according to an embodiment.
[0027] Figure 2 for Figure 1 Enlarged view of position A in the middle.
[0028] Figure 3 for Figure 1 Enlarged view of position B in the middle.
[0029] Figure 4 for Figure 1 Bottom view of the .
[0030] Figure 5 This is a top view of the fastening plate described in this application.
[0031] Figure 6 This is a schematic diagram of the structure of the fastener described in this application.
[0032] Description of reference numerals in the figures:
[0033] 10-support base; 11-anchor hole; 12-universal bamboo layer; 20-jack; 30-fastening plate; 31-sliding part; 32-sensing block; 33-mounting hole; 40-fastener; 41-fixing ring; 42-locking block; 50-fixing bracket; 51-vertical plate; 52-slide groove; 53-crossbeam; 60-displacement sensor; 70-pressing drive member; 71-pressing block. DETAILED DESCRIPTION
[0034] The following will further describe the anchor pullout test device of the utility model in detail in combination with specific embodiments and drawings. The drawings are only used for exemplary descriptions, and only show schematic diagrams, not actual drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0035] Please refer to Figures 1 to 6In a non-limiting embodiment of the utility model, an anchor pull-out test device includes a support base 10, a jack 20 and a fixed bracket 50, the support base 10 is provided with an anchor hole 11 for the anchor to pass through, the bottom surface of the support base 10 is provided with a universal bamboo layer 12, the jack 20 and the fixed bracket 50 are arranged on the support base 10, the top of the jack 20 is provided with a fastening plate 30, the fastening plate 30 is provided with a fastener 40 for locking the anchor, the fastening plate 30 is provided with a protruding sliding portion 31 on both sides, the fixed bracket 50 is provided with a slide groove 52 matching the sliding portion 31 on both sides, the sliding portion 31 is inserted into the slide groove 52 and is slidably connected with the slide groove 52. In the present embodiment, an anchor pull-out test device is provided, which is used to test the pull-out performance of the anchor, including a support base 10, a jack 20 and a fixed bracket 50 are all arranged on the support base 10, a universal bamboo layer 12 is provided at the bottom of the support base 10, the universal bamboo layer 12 can flexibly adjust the orientation of the support base 10, and can effectively ensure the stability of the support base 10 when the surrounding environment of the test anchor is uneven, and is suitable for testing work in various environments, a plurality of anchor holes 11 are opened on the support base 10 for the tested anchor to pass through, a fastening plate 30 is connected to the top of the jack 20, and the jack 20 can provide a pulling force for the pull-out test by lifting the fastening plate 30, and a plurality of fasteners 40 for locking the anchor are provided on the fastening plate 30, so that the anchor is fixedly connected to the fastening plate 30 to prevent the anchor from sliding relative to the fastening plate 30 during the test, The cam 51 is provided with a plurality of vertical plates 51, each of which is provided with a plurality of vertical plates 51, and the plurality of vertical plates 51 are provided with a plurality of vertical plates 51. The plurality of vertical plates 51 are provided with plurality of vertical plates 51, and the plurality of vertical plates 51 are provided with plurality of vertical plates 51. The plurality of vertical plates 51 are provided with plurality of vertical plates 51, and the plurality of vertical plates 51 are provided with plurality of vertical plates 51. The plurality of vertical plates 51 are provided with plurality of vertical plates 51, and the plurality of vertical plates 51 are provided with plurality of vertical plates 51.
[0036] Preferably, according to experimental requirements, the number of test anchor rods is usually no less than 3. In this embodiment, 3 anchor holes 11 are provided.
[0037] Please refer to Figures 1 to 6In a non-limiting embodiment of the present invention, the universal bamboo layer 12 is disposed at the edge of the bottom surface of the support base 10. In this embodiment, the universal bamboo layer 12 is disposed at the edge of the bottom surface of the support base 10, and a hollow portion is left in the center for the anchor rod to pass through.
[0038] Preferably, in this embodiment, the universal bamboo joint layer 12 is made of a hollow universal bamboo joint tube, which can flexibly adjust the angle with a high degree of freedom and is effectively applicable to pull-out tests in various complex environments.
[0039] Please refer to Figures 1 to 6 In a non-limiting embodiment of the present invention, the jack 20 is a through-type jack. In this embodiment, the jack 20 is a through-type jack, and the jack 20 is arranged at the anchor hole 11 of the support base 10. The anchor rod passes through the jack 20 from the bottom of the jack 20 and is connected to the fastening plate 30 at the top of the jack 20.
[0040] Please refer to Figures 1 to 6 In a non-limiting embodiment of the present invention, a sensing block 32 is provided at one end of the sliding portion 31 extending out of the slide slot 52. In this embodiment, a sensing block 32 is installed at one end of the sliding portion 31 extending out of the slide slot 52, and the displacement sensor 60 obtains the actual displacement distance of the anchor rod by measuring the moving distance of the center of the sensing block 32, which will not be affected by the tilt and has a higher accuracy.
[0041] Please refer to Figures 1 to 6 In a non-limiting embodiment of the present invention, a displacement sensor 60 is provided on the surface of the fixed bracket 50 close to the sensing block 32. In this embodiment, a displacement sensor 60 is provided on the vertical plate 51 of the fixed bracket 50. The displacement sensor 60 is located on the surface of the vertical plate 51 close to the sensing block 32. The displacement sensor 60 is used to measure the displacement distance of the sensing block 32, thereby obtaining the actual displacement distance of the anchor rod after being subjected to the pulling force.
[0042] Preferably, there are two displacement sensors 60, which are respectively located on the upper and lower sides of the slide groove 52. After the pressing drive 70 presses the fastening plate 30, the lower displacement sensor 60 records the initial position of the sliding part 31, and then the jack 20 is started. After the pulling process is completed, the upper displacement sensor 60 records the final position of the sliding part 31, and the displacement distance of the anchor rod is obtained by the difference between the two positions.
[0043] Please refer to Figures 1 to 6In a non-limiting embodiment of the utility model, the fixed bracket 50 includes a crossbeam 53, the crossbeam 53 is located above the fastening plate 30, a pressing driving member 70 is provided on the top of the crossbeam 53, and the driving end of the pressing driving member 70 passes through the crossbeam 53. In this embodiment, the fixed bracket 50 includes a crossbeam 53, both ends of which are fixedly connected to the tops of the vertical plates 51 on both sides, the crossbeam 53 is located above the fastening plate 30, a pressing driving member 70 is installed on the top of the crossbeam 53, and the driving end of the pressing driving member 70 passes through the crossbeam 53, so that a certain pressure can be applied to the fastening plate 30. After the anchor rod passes through the fastener 40, the fastening plate 30 is pressed down by the pressing driving member 70, so that the fastener 40 on the fastening plate 30 is fully fixed to the anchor rod, thereby ensuring the accuracy of the subsequent test results.
[0044] Preferably, a pressing block 71 is sleeved on the driving end of the pressing driving member 70, and a central portion of the pressing block 71 is provided with an empty groove for making way to prevent the pressing block 71 from colliding with the anchor rod when pressed downward.
[0045] Please refer to Figures 1 to 6 In a non-limiting embodiment of the utility model, the fastening plate 30 is provided with a plurality of mounting holes 33, and the fasteners 40 are arranged in the mounting holes 33. In this embodiment, the fastening plate 30 is provided with a plurality of mounting holes 33 that match the fasteners 40, and a fastener 40 is arranged in each mounting hole 33. The fasteners 40 and the mounting holes 33 are interference-fitted to prevent the fasteners 40 from coming out, thereby ensuring the connection and fixing effect between the fastening plate 30 and the anchor rod.
[0046] Specifically, according to experimental requirements, there are usually no less than three test anchor rods. In this embodiment, three mounting holes 33 are provided, and correspond to the positions of the anchor holes 11 on the bottom support base 10. Correspondingly, three fasteners 40 are also provided, and one fastener 40 is installed in each mounting hole 33.
[0047] Please refer to Figures 1 to 6 In a non-limiting embodiment of the utility model, the fastener 40 includes a fixing ring 41 and a plurality of locking blocks 42, the locking blocks 42 are distributed around the inner side of the fixing ring 41, and the fixing ring 41 is arranged in the mounting hole 33. In this embodiment, the fastener 40 includes a fixing ring 41 and a plurality of locking blocks 42, the locking blocks 42 are inclined block structures separated from a truncated cone structure, and the top radius thereof is smaller than the bottom radius, the locking blocks 42 are arranged in the fixing ring 41, and a circular hole for an anchor rod is left in the middle after the locking blocks 42 are merged. When the pull-out test is performed, the anchor rod extends from the bottom of the fastener 40 and passes through the fastener 40, and then the locking blocks 42 are pressed down by the pressing driving member 70 to retract inward, thereby locking the anchor rod in the middle, so that it is fixedly connected with the fastening plate 30, and relative sliding does not occur, thereby ensuring the accuracy of the test results.
[0048] Preferably, in this embodiment, each fastener 40 is provided with three locking blocks 42, and the three locking blocks 42 are distributed around the inner side of the fixing ring 41, wherein, according to a specific installation orientation, the top radius of the locking block 42 is smaller than the bottom radius (attached Figure 6 , which is an exploded schematic diagram of the fastener 40 after being turned over), so that when the fastening plate 30 moves downward, the locking block 42 retracts inward to lock the anchor rod.
[0049] Please refer to Figures 1 to 6 In a non-limiting embodiment of the present invention, the locking block 42 has a thread on one side away from the fixing ring 41. In this embodiment, the inner surface of the locking block 42 has a thread, and the thread is provided to increase the friction between the locking block 42 and the anchor rod after merging, thereby preventing relative sliding and effectively improving the fixing effect.
[0050] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0051] In addition, in the description of the present invention, “several” means two or more than two, unless otherwise clearly and specifically defined.
[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0053] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. An anchor pull-out test device, characterized in that: It includes a supporting base, a jack and a fixed bracket. The supporting base is provided with an anchor hole for the anchor rod to pass through. The bottom surface of the supporting base is provided with a universal bamboo joint layer. The jack and the fixed bracket are arranged on the supporting base. The top of the jack is provided with a fastening plate. The fastening plate is provided with a fastener for locking the anchor rod. Both sides of the fastening plate are provided with protruding sliding parts. Both sides of the fixed bracket are provided with sliding grooves that cooperate with the sliding parts. The sliding part is inserted into the sliding groove and is slidably connected with the sliding groove.
2. The anchor pull-out test device according to claim 1, characterized in that: The universal bamboo joint layer is arranged at the edge position of the bottom surface of the support base.
3. The anchor pull-out test device according to claim 1, characterized in that: The jack is a through-type jack.
4. The anchor pull-out test device according to claim 1, characterized in that: An induction block is arranged at one end of the sliding part extending out of the sliding slot.
5. The anchor pull-out test device according to claim 4, characterized in that: A displacement sensor is arranged on the surface of the fixing bracket on one side close to the sensing block.
6. The anchor pull-out test device according to claim 1, characterized in that: The fixing bracket comprises a crossbeam, the crossbeam is located above the fastening plate, a pressing driving member is provided on the top of the crossbeam, and a driving end of the pressing driving member passes through the crossbeam.
7. The anchor pull-out test device according to claim 1, characterized in that: The fastening plate is provided with a plurality of mounting holes, and the fasteners are arranged in the mounting holes.
8. The anchor pull-out test device according to claim 7, characterized in that: The fastener comprises a fixing ring and a plurality of locking blocks, wherein the locking blocks are distributed around the inner side of the fixing ring, and the fixing ring is arranged in the mounting hole.
9. The anchor pull-out test device according to claim 8, characterized in that: A thread is arranged on a surface of one side of the locking block away from the fixing ring.