Device for testing strength of anchorage device
By adding a pointing member to the sample seat, the problem of offset of the sample placement position is solved, and the accuracy and reliability of anchor strength testing is improved.
Patent Information
- Application Number
- CN202421726264.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-20
AI Technical Summary
In the static load pressure bearing test of anchor strength, when the sample is placed on the sample holder, position deviation is prone to occur, resulting in errors in the measurement of displacement sensors and affecting the accuracy of the test results.
The pointing member is added to the sample seat, including a limit seat and a calibration ring, and the pointing member is used to indicate and calibrate the sample position to ensure that the sample is not hindered by the limit seat when under pressure, and improve the accuracy of sample placement.
Through the use of the pointing member, the offset between the sample axis and the sample seat axis is reduced, the accuracy of the static load pressure bearing test is improved, and the anchor strength test results are more reliable.
Smart Images
Figure CN223005905U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of engineering detection, and particularly relates to a device for testing the strength of an anchor. Background Art
[0002] With the wide application of prestressed technology in infrastructure such as highway, railway bridges, water conservancy, and electric power, as an important part of the prestressed system, the stability and reliability of the performance of the anchor are crucial for the safety of the overall structure, and various performance tests need to be carried out on it. Among them, the static load bearing test of the anchor strength is an important item in the anchor test index, which is used to measure the deflection of the anchor.
[0003] A device for carrying out a static load bearing test on an anchor generally includes a machine body, a detection mechanism, a sample placement seat, and a pressure plate. The sample placement seat and the pressure plate are both placed on the machine body, and the sample is placed on the sample placement seat. The detection mechanism includes a displacement sensor placed in the sample placement seat. When the sample is being tested, the displacement sensor abuts against the edge of the bottom surface of the sample, and the sample is clamped between the sample placement seat and the pressure plate to be compressed, so that the deformation amount of the sample can be measured through the displacement sensor. After the test of the sample, the residual deflection value of the sample is calculated through software.
[0004] However, in actual operation, when the sample is placed on the sample placement seat, the situation where the axis of the sample deviates from the axis of the sample placement seat often occurs, resulting in an error in the position of the sample measured by the displacement sensor in the sample placement seat and affecting the accuracy of the test results. Utility Model Content
[0005] In order to improve the accuracy of the position between the sample and the displacement sensor, the present application provides a device for testing the strength of an anchor.
[0006] The present application provides a device for testing the strength of an anchor, adopting the following technical solution:
[0007] A device for testing the strength of an anchor includes: a machine body, a sample placement seat, and a displacement sensor. The interior of the sample placement seat is hollow to form a cavity for placing the displacement sensor. The sample placement seat is provided with a pointing member, and the cavity of the pointing member is used to enclose the sample to indicate the position of the sample.
[0008] By adopting the above technical solution, by arranging the pointing member on the sample placement seat to narrow the position where the sample is placed on the sample placement seat, the sample can be guided by the pointing member when being placed, thereby reducing the degree of deviation between the axis of the sample and the axis of the sample placement seat, improving the accuracy of the static load bearing test, and making the test result of the anchor strength more reliable.
[0009] Optionally, the pointing member includes a limit seat disposed on the upper surface of the sample placing seat. The limit seat has an enclosing cavity for enclosing the sample. When the sample is located in the sample placing seat, there is a deformation gap between the inner wall of the limit seat and the outer wall of the sample.
[0010] By adopting the above technical solution, the deformation gap between the sample and the limit seat can allow the sample to deform without being hindered by the limit seat when being compressed.
[0011] Optionally, the pointing member includes a calibration ring that moves up and down on the sample placing seat. The inner diameter of the calibration ring is the same as the outer diameter of the sample. When the calibration ring moves upward, it protrudes from the upper surface of the sample placing seat. When the calibration ring moves downward, it can be completely received back into the sample placing seat. And there is a driving component in the sample placing seat for driving the calibration ring to move.
[0012] By adopting the above technical solution, the inner diameter of the calibration ring is the same as the outer diameter of the sample, so as to improve the accuracy of the sample placement position. And when the sample is compressed, the calibration ring can be retracted into the sample placing seat, so that while pointing the position of the sample, it is not easy to hinder the deformation of the sample.
[0013] Optionally, the driving component includes a rotating ring, a linkage column and a rotating member;
[0014] The rotating ring is located in the sample placing seat and coaxially sleeved on the calibration ring. The linkage column is disposed on the inner wall of the rotating ring. A linkage groove for the linkage column to abut and slide is formed on the outer wall of the calibration ring. The linkage groove extends obliquely along the circumferential direction of the calibration ring; The rotating member is disposed in the sample placing seat for driving the rotating ring to move.
[0015] By adopting the above technical solution, when the rotating ring rotates, through the cooperation of the linkage groove and the linkage column, the calibration ring can be driven to move along its own axis.
[0016] Optionally, the rotating ring is provided with teeth along its circumferential direction. The rotating member includes,
[0017] A synchronous gear that rotates in the sample placing seat, has an axis parallel to the axis of the rotating ring, and meshes with the rotating ring;
[0018] A rotating handle that is rotatably connected in the sample placing seat, has an axis perpendicular to the axis of the rotating ring, and one end extends to the outside of the sample placing seat;
[0019] A bevel gear set is disposed between the synchronous gear and the rotating handle for driving the synchronous gear to rotate when the rotating handle rotates.
[0020] By adopting the above technical solution, through the combined design of a synchronous gear, a rotating handle, and a bevel gear set, the transmission conversion in both vertical and horizontal directions is achieved, making the operation simpler and more convenient.
[0021] Optionally, a plurality of linkage columns are circumferentially arranged along the rotating ring, and the linkage grooves correspond to the linkage columns one by one.
[0022] By adopting the above technical solution, a plurality of linkage columns are arranged on the rotating ring, corresponding to a plurality of linkage grooves on the calibration ring one by one, enhancing the stability of the movement of the calibration ring.
[0023] Optionally, a vertically extending guide rod is arranged on the calibration ring, and the guide rod slides up and down on the sample placing seat.
[0024] By adopting the above technical solution, the guide rod can guide the moving position of the calibration ring, improving the stability of the calibration ring during movement.
[0025] Optionally, the inner wall of the calibration ring is a smooth surface.
[0026] By adopting the above technical solution, the inner wall of the calibration ring is designed as a smooth surface, reducing the friction force with the sample.
[0027] Optionally, the calibration ring includes an inner ring and an outer ring that are detachably connected, and the outer ring is coaxially sleeved on the outer wall of the inner ring.
[0028] By adopting the above technical solution, the inner ring is more prone to wear when contacting the sample than the outer ring. By making the inner ring and the outer ring detachable, it is convenient to replace the inner ring.
[0029] Optionally, grip handles extending outward from the sample placing seat are arranged on opposite sides of the sample placing seat.
[0030] By adopting the above technical solution, grip handles are arranged on both sides of the sample placing seat, facilitating the replacement and movement of the sample placing seat.
[0031] In summary, the present application includes at least one of the following beneficial effects:
[0032] 1. By adding a pointing member to the sample placing seat, the pointing member can indicate the position of the sample, thereby effectively improving the accuracy of sample placement and the accuracy of test results;
[0033] 2. By adding a calibration ring to the sample placing seat, the calibration ring can limit the sample to a preset position, and through the mutual cooperation of the linkage columns and the linkage grooves, the up and down movement of the calibration ring is realized, so as to calibrate the position of the sample when placing the sample and separate from the calibration ring during the compression test of the sample, thus not easily hindering the deformation of the sample during compression. Brief Description of the Drawings
[0034] Figure 1 It is a schematic structural diagram of the first embodiment of the present application;
[0035] Figure 2 It is a schematic structural diagram of the sample placing seat in the first embodiment of the present application;
[0036] Figure 3 It is a schematic structural diagram of the pointing member in the second embodiment of the present application;
[0037] Figure 4 It is Figure 3 the sectional view at A-A in
[0038] Figure 5 It is Figure 4 the enlarged structural schematic diagram at B in
[0039] Figure 6 It is a schematic diagram of the exploded structure of the calibration ring and the rotating ring in the second embodiment of the present application.
[0040] Explanation of reference numerals: 1, body; 2, sample placing seat; 3, displacement sensor; 4, cavity; 5, pointing member; 6, limit seat; 7, enclosing cavity; 8, deformation gap; 9, calibration ring; 91, inner ring; 92, outer ring; 10, rotating ring; 11, linkage column; 12, rotating member; 121, synchronous gear; 122, rotating handle; 123, bevel gear set; 13, linkage groove; 14, guide rod; 15, grip; 16, operation cavity; 17, lifting mechanism; 18, sample. Detailed implementation manners
[0041] The following further Figures 1-6 elaborates on the present application in detail with reference to the attached drawings.
[0042] Embodiment 1:
[0043] The embodiment of the present application discloses a device for testing the strength of an anchor. Referring to Figure 1 and Figure 3 , the device for testing the strength of an anchor includes a body 1, a sample placing seat 2, and a displacement sensor 3.
[0044] Referring to Figure 2 , the sample placing seat 2 is in the shape of a hollow cylinder, so that a cavity 4 for installing the displacement sensor 3 is formed inside the sample placing seat 2. Two displacement sensors 3 are arranged in the sample placing seat 2 and are arranged radially along the sample placing seat 2. One displacement sensor 3 is located at the center of the sample placing seat 2, and the other two displacement sensors 3 are respectively close to the inner walls on both sides of the sample placing seat 2 that are far away from each other.
[0045] Referring to Figure 1 and Figure 2, the upper end of the anchor sample 18 is in the shape of a square plate, and the lower end is in the shape of a cylinder. The inner diameter of the sample placing seat 2 is smaller than the outer diameter of the lower end of the sample 18. When the sample 18 is placed on the sample placing seat 2, the lower end of the sample 18 is placed on the upper surface of the sample placing seat 2, and the sample 18 is moved to a position coaxial with the sample placing seat 2, so that the probes of the three displacement sensors 3 can respectively contact the center and the opposite sides of the lower surface of the sample 18.
[0046] An operation cavity 16 is formed on the machine body 1. A lifting mechanism 17 is installed at the bottom of the operation cavity 16 of the machine body 1. The sample placing seat 2 is located in the operation cavity 16 and installed on the lifting mechanism 17. The lifting mechanism 17 rises to drive the sample placing seat 2 and the sample 18 on the sample placing seat 2 to rise, so that the top surface of the sample 18 abuts against the inner top surface of the operation cavity 16 of the machine body 1, thereby applying pressure to the sample 18, and further testing the deformation of the sample 18. The lifting mechanism 17 can be a hydraulic cylinder or an electric telescopic rod. In this embodiment, it is preferably a hydraulic cylinder. Further, a pressure sensor (not shown in the figure) is installed at the inner top surface of the operation cavity 16 of the machine body 1 to measure and control the pressure received by the sample 18.
[0047] Refer to Figure 1 , the sample placing seat 2 can be detachably placed on the lifting mechanism 17 by bolt installation or plug docking, so as to facilitate the replacement of the sample placing seat 2 and make the size of the sample placing seat 2 adapt to the size of the sample 18. Furthermore, grip handles 15 extend outward from the outer walls on both opposite sides of the sample placing seat 2. The length extension direction of the grip handles 15 is perpendicular to the axis direction of the sample placing seat 2. By holding the grip handles 15 or using tools to support the grip handles 15, the convenience of driving the sample placing seat 2 to move and replacing the sample placing seat 2 is improved.
[0048] Refer to Figure 1 and Figure 2 , in order to enable the sample 18 to be close to the center position of the sample placing seat 2 when placed on the sample placing seat 2, so as to improve the matching progress between the sample 18 and the displacement sensor 3, a pointing member 5 is provided on the sample placing seat 2. The pointing member 5 is used to enclose the sample 18 to point to the position of the sample 18.
[0049] In this embodiment, the pointing member 5 includes a limiting seat 6. The limiting seat 6 is in the shape of a circular ring and is integrally formed on the upper surface of the sample placing seat 2. The limiting seat 6 is coaxial with the sample placing seat 2, and the outer diameter of the limiting seat 6 is the same as the outer diameter of the sample placing seat 2. The inner diameter of the limiting seat 6 is larger than the inner diameter of the sample placing seat 2 and the outer diameter of the sample 18. A surrounding cavity 7 communicating with the cavity 4 is formed in the inner cavity of the limiting seat 6 to enclose the sample 18 and specify the position of the sample 18.
[0050] Specifically, the size value of the inner diameter of the limit seat 6 being greater than the outer diameter of the specimen 18 is between 4 mm and 10 mm, and preferably 6 mm in this embodiment. When the specimen 18 is placed on the specimen placing seat 2 and coaxially located in the middle of the limit seat 6, the outer wall of the specimen 18 is close to the inner wall of the limit seat 6, and a deformation gap 8 is formed between the outer wall of the specimen 18 and the inner wall of the limit seat 6, so as to have a deformation space when the specimen 18 bears pressure.
[0051] The implementation principle of the device for testing the strength of an anchor in an embodiment of the present application is that the limit seat 6 narrows the range on the specimen placing seat 2 for placing the specimen 18, so that the specimen 18 can be placed on the specimen placing seat 2 more precisely.
[0052] Embodiment Two:
[0053] The difference between the embodiment of the present application and Embodiment One lies in the pointing member 5. In the illustration of the embodiment of the present application, for the convenience of display, the displacement sensor 3 is hidden. Refer to Figure 3 In this embodiment, the pointing member 5 includes a calibration ring 9 that moves coaxially up and down on the specimen placing seat 2. The calibration ring 9 is circular, the outer diameter of the calibration ring 9 is smaller than the outer diameter of the specimen placing seat 2, and the inner diameter of the calibration ring 9 is the same as the outer diameter of the specimen 18.
[0054] Refer to Figure 3 and Figure 4 When the calibration ring 9 moves upward, the upper part of the calibration ring 9 can protrude from the upper surface of the specimen placing seat 2. At this time, the specimen 18 is placed in the calibration ring 9, and the specimen 18 can be coaxially positioned with the calibration ring 9 and the specimen placing seat 2. When the calibration ring 9 moves downward, the calibration ring 9 can be completely retracted into the specimen placing seat 2 to separate from the specimen 18, so that the specimen 18 can deform without being restricted by the calibration ring 9 when bearing pressure.
[0055] Refer to Figure 4 and Figure 5 To adjust the position of the calibration ring 9, a driving component is provided on the specimen placing seat 2. Specifically, the driving component includes a rotating ring 10, a linkage column 11, and a rotating member 12.
[0056] Refer to Figure 5 and Figure 6 The rotating ring 10 rotates coaxially in the specimen placing seat 2, and the rotating ring 10 is coaxially sleeved on the outer wall of the calibration ring 9. The linkage column 11 is fixed on the inner wall of the rotating ring 10 and extends radially along the rotating ring 10, and a plurality of linkage columns 11 are evenly spaced along the circumferential direction of the rotating ring 10. Linkage grooves 13 corresponding to the linkage columns 11 one by one are formed on the outer wall of the calibration ring 9, and the linkage grooves 13 are used for the corresponding linkage columns 11 to abut and slide, and the linkage grooves 13 extend obliquely along the circumferential direction of the calibration ring 9.
[0057] The rotating member 12 is arranged in the sample placing seat 2 and is used to drive the moving of the rotating ring 10. Through the mutual cooperation of the linkage column 11 and the linkage groove 13, when the rotating ring 10 rotates forward or backward, it will drive the calibration ring 9 to slide up or down along the sample placing seat 2, so as to realize the calibration of the position of the sample 18.
[0058] Refer to Figure 5 and Figure 6 Specifically, the rotating member 12 includes a synchronous gear 121, a rotating handle 122 and a bevel gear set 123. The synchronous gear 121 is rotatably connected to the sample placing seat 2 through a rotating shaft, and the axis of the synchronous gear 121 is parallel to the axis of the rotating ring 10. Tooth teeth are distributed along the circumferential direction on the outer wall of the rotating ring 10, and the rotating ring 10 is meshed with the synchronous gear 121 through the tooth teeth.
[0059] The rotating handle 122 is rotatably connected to the sample placing seat 2 and is columnar. The axis of the rotating handle 122 is perpendicular to the axis of the rotating ring 10, and one end of the rotating handle 122 is located in the sample placing seat 2, and the opposite end extends to the outside of the sample placing seat 2.
[0060] The bevel gear set 123 includes two bevel gears with perpendicular and meshing axes. One of the bevel gears is coaxially sleeved and fixed on the outer wall of the rotating shaft of the synchronous dimension to rotate coaxially with the synchronous gear 121; the other bevel gear is coaxially fixed on one end of the rotating handle 122 located in the sample placing seat 2.
[0061] When the rotating handle 122 rotates, the rotation is transmitted to the synchronous gear 121 through the bevel gear set 123. The synchronous gear 121 drives the rotating ring 10 to rotate through the meshing action with the rotating ring 10, so as to drive the calibration ring 9 to move vertically.
[0062] Refer to Figure 5 and Figure 6 Furthermore, a vertically extending guide rod 14 is arranged on the calibration ring 9, and the guide rod 14 slides up and down on the sample placing seat 2. The guide rod 14 can limit the moving direction of the calibration ring 9, so as to further improve the smoothness of the movement of the calibration ring 9.
[0063] In addition, the calibration ring 9 further includes an inner ring 91 and an outer ring 92 that are detachably connected by bolts. The outer ring 92 is coaxially sleeved on the outer wall of the inner ring 91. The tooth teeth of the calibration ring 9 and the guide rod 14 are arranged on the outer ring 92. The inner diameter of the inner ring 91 is the same as the outer diameter of the sample 18, and the inner wall of the inner ring 91 is a smooth surface to reduce the friction between the inner ring 91 and the sample 18 when the inner ring 91 moves. Through the detachable setting of the inner ring 91 and the outer ring 92, when the smooth surface of the inner ring 91 is worn, the inner ring 91 can be repaired and replaced.
[0064] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. An anchor strength testing device, characterized in that: include: A machine body (1), a sample placement seat (2), and a displacement sensor (3); the sample placement seat (2) is hollow inside to form a cavity (4) for placing the displacement sensor (3); the sample placement seat (2) is provided with a pointing member (5); the cavity of the pointing member (5) is used to enclose a sample (18) to indicate the position of the sample (18).
2. The anchor strength testing device according to claim 1, characterized in that: The pointing member (5) comprises a limit seat (6), the limit seat (6) being arranged on the upper surface of the sample placement seat (2), the limit seat (6) having an enclosure cavity (7) for enclosing the sample (18), and when the sample (18) is located in the sample placement seat (2), a deformation gap (8) is provided between the inner wall of the limit seat (6) and the outer wall of the sample (18).
3. The anchor strength testing device according to claim 1, characterized in that: The pointing member (5) comprises a calibration ring (9) which moves up and down on the sample holder (2); the inner diameter of the calibration ring (9) is consistent with the outer diameter of the sample (18); when the calibration ring (9) moves upward, it protrudes from the upper surface of the sample holder (2); when the calibration ring (9) moves downward, it can be completely retracted into the sample holder (2); and the sample holder (2) has a driving component for driving the calibration ring (9) to move.
4. The anchor strength testing device according to claim 3, characterized in that: The driving assembly comprises a rotating ring (10), a linkage column (11) and a rotating member (12); The rotating ring (10) is located in the sample holder (2) and is coaxially sleeved on the calibration ring (9); the linkage column (11) is arranged on the inner wall of the rotating ring (10); a linkage groove (13) is provided on the outer wall of the calibration ring (9) for the linkage column (11) to press into and slide; the linkage groove (13) extends obliquely along the circumference of the calibration ring (9); the rotating member (12) is arranged in the sample holder (2) and is used to drive the rotating ring (10) to move.
5. The anchor strength testing device according to claim 4, characterized in that: The rotating ring (10) is provided with teeth along its circumference, and the rotating member (12) comprises: A synchronous gear (121) rotates in the sample holder (2), with its axis parallel to the axis of the rotating ring (10) and meshing with the rotating ring (10); A rotating handle (122) is rotatably connected to the sample holder (2), with an axis perpendicular to the axis of the rotating ring (10) and one end extending to the outside of the sample holder (2); The bevel gear set (123) is arranged between the synchronous gear (121) and the rotating handle (122), and is used to drive the synchronous gear (121) to rotate when the rotating handle (122) rotates.
6. The anchor strength testing device according to claim 4, characterized in that: A plurality of linkage columns (11) are arranged along the circumference of the rotating ring (10), and the linkage grooves (13) correspond one to one to the linkage columns (11).
7. The anchor strength testing device according to claim 3, characterized in that: A vertically extending guide rod (14) is provided on the calibration ring (9), and the guide rod (14) slides up and down on the sample placement seat (2).
8. The anchor strength testing device according to claim 3, characterized in that: The inner wall of the calibration ring (9) is a smooth surface.
9. The anchor strength testing device according to claim 8, characterized in that: The calibration ring (9) comprises an inner ring (91) and an outer ring (92) which are detachably connected, and the outer ring (92) is coaxially sleeved on the outer wall of the inner ring (91).
10. The anchor strength testing device according to claim 1, characterized in that: Handles (15) extending toward the outside of the sample placement seat (2) are provided on opposite sides of the sample placement seat (2).