Anchor bolt pull-out test device and test method

Abstract

The present application belongs to the field of testing technology, and relates to an anchor bolt pulling test device and a test method. The anchor bolt pulling test device includes a bracket and a linear power cylinder, the linear power cylinder includes a cylinder body and a piston rod, the cylinder body is fixed on the bracket, the piston rod is arranged on the cylinder body, and can reciprocate along the vertical direction of the cylinder body, a detection component capable of detecting the movement of the piston rod is arranged between the piston rod and the cylinder body, a pulling rod is arranged along the vertical direction of the piston rod, the lower end of the pulling rod is detachably connected to a mounting seat, the lower end of the mounting seat is provided with a mounting groove for the anchor bolt connecting block to be embedded, the anchor bolt connecting block is provided with a threaded hole capable of being threadedly connected with the anchor bolt, a positioning component is arranged at the bottom of the bracket, the positioning component can abut against the anchor bolt to be tested to form a positioning, and has the advantages of high testing accuracy.

Description

Technical Field

[0001] The present application belongs to the field of testing technology and relates to an anchor bolt pulling test device and a test method. Background Art

[0002] Anchor bolts refer to the general term for all post-anchoring components. They have a wide range and are divided into metal anchor bolts and non-metal anchor bolts according to different raw materials. They are divided into expansion anchor bolts, expansion hole anchor bolts, bonding anchor bolts, concrete screws, nails, concrete nails, etc. according to different anchoring mechanisms. Before construction, it is necessary to test their tensile strength in advance to ensure the overall stability of the building.

[0003] Patent CN217084477U discloses an anchor bolt puller, including a puller body with a pull rod, a puller body provided with a puller clamp for connecting the anchor bolt, the puller clamp including a clamp body, jaws respectively hinged on both sides of the clamp body, puller blocks respectively provided at the relative positions of the two jaws, semicircular notches respectively provided at the relative positions of the two puller blocks, a drive assembly for driving the two puller blocks to open and close is provided on the clamp body, and an elastic member for resetting and opening the two puller blocks is provided between the clamp body and one of the jaws. When working, the puller is aligned with the workstation to be tested, and under the elastic force of the elastic member, the two puller blocks are opened and located on both sides of the anchor bolt, and when the pull rod of the puller body rises, the drive assembly is driven to drive the two jaws to move closer, so that the two puller blocks are clamped on the anchor bolt, and when the pull rod continues to rise, the anchor bolt pull force test can be realized.

[0004] In actual testing, the clamping jaws are prone to relative sliding with the anchor bolt under the action of tensile force, affecting the test accuracy and damaging the threads on the outside of the anchor bolt. Summary of the invention

[0005] In order to improve the test accuracy of anchor bolt pulling, the present application provides an anchor bolt pulling test device and a test method.

[0006] In a first aspect, the present application provides an anchor pull-out test device, which adopts the following technical solution:

[0007] A device for testing anchor bolt pulling, comprising a bracket and a linear power cylinder, wherein the linear power cylinder comprises a cylinder body and a piston rod, the cylinder body being fixed on the bracket, the piston rod being arranged on the cylinder body and being capable of reciprocating in the vertical direction of the cylinder body, a detection component capable of detecting the amount of movement of the piston rod being arranged between the piston rod and the cylinder body, a pulling rod being arranged in the vertical direction of the piston rod, a mounting seat being detachably connected to the lower end of the pulling rod, a mounting groove being provided at the lower end of the mounting seat for embedding an anchor bolt connecting block, a threaded hole being provided on the anchor bolt connecting block being capable of being threadedly connected to the anchor bolt, a positioning component being provided at the bottom of the bracket, the positioning component being capable of abutting against the anchor bolt to be tested to form a positioning.

[0008] By adopting the above technical solution, during the test, the bracket is placed on the block, and the positioning component is used to contact the anchor bolt, and the position of the bracket is adjusted so that the anchor bolt is aligned with the anchor bolt connection block, thereby improving the test efficiency and reducing the problems of low test accuracy caused by the misalignment between the anchor bolt and the anchor bolt connection block; after the bracket position is adjusted, the threaded hole of the anchor bolt and the anchor bolt connection block is connected, and the anchor bolt connection block is placed in the mounting groove of the mounting seat, so that the anchor bolt is connected to the anchor bolt pulling test device; the piston rod of the linear power cylinder is lifted to drive the anchor bolt to move upward, and the movement of the piston rod is detected by the detection component to complete the anchor bolt pulling test. By connecting the anchor bolt connection block to the anchor bolt with threads, the risk of the anchor bolt connection block sliding relative to the anchor bolt is reduced, and the test accuracy is improved; the pulling rod and the mounting seat are detachably connected, and different mounting seats can be replaced according to different types of anchor bolts to accommodate different types of anchor bolt connection blocks, thereby increasing the range of test objects.

[0009] Preferably, a connecting head is provided at the lower end of the pulling rod, the connecting head is provided with a through hole in the horizontal direction, the mounting seat is provided with a mounting hole coaxial with the through hole, and the same connecting pin is inserted into the mounting hole and the through hole.

[0010] By adopting the above technical solution, when a different mounting seat needs to be replaced, the connecting pin can be taken out, the mounting hole on the replaced mounting seat is aligned with the through hole on the connecting head, and the connecting pin is reinserted into the mounting hole and the through hole to connect the connecting head to the mounting seat.

[0011] Preferably, the pulling rod is a screw rod, the screw rod is spirally matched with the piston rod, the lower end of the screw rod is threadedly connected to the connecting head, and the upper end of the screw rod is provided with a handle for driving the screw rod to rotate.

[0012] By adopting the above technical solution, the exposed height of the anchor bolt to be tested may be different. By rotating the handle, the screw can be rotated and moved in the up and down directions at the same time, and the mounting seat can be adjusted to the appropriate position so that the anchor bolt connecting block can be connected to the anchor bolt, thereby improving the test range of the device.

[0013] Preferably, the cylinder body of the linear power cylinder is provided with a fixed guide frame, the piston rod of the linear power cylinder is provided with a moving guide frame, and a guide rod is provided between the fixed guide frame and the moving guide frame.

[0014] By adopting the above technical solution, after a guide rod is provided between the piston rod and the cylinder body, the stability of the movement of the piston rod can be improved.

[0015] Preferably, the linear power cylinder is an oil cylinder, and the anchor pulling test device also includes an oil pump, which is connected to the cylinder body through an oil pipe 1. An installation cavity is opened at the bottom of the bracket, and the positioning assembly includes a plurality of oil bags, each of which has the same shape and size and is evenly distributed at the bottom of the bracket. The fixed end of the oil bag is fixed in the installation cavity, and the oil pump is connected to the oil bag through an oil pipe 2. The oil bag can be embedded in the installation cavity before oil filling, and after the oil bag is filled with oil, the positioning end of the oil bag can abut against the anchor to be tested.

[0016] By adopting the above technical solution, when not testing, the oil bag is not filled with oil and can be placed in the accommodating cavity. When testing is required, oil can be filled into the oil bag through an oil pump to expand the oil bag so that the positioning end of the oil bag abuts against the anchor bolt to be tested to form a positioning, so that the anchor bolt is located at the center line of the anchor bolt testing device.

[0017] Preferably, the anchor pulling test device further comprises a controller, a pressure sensor 1 is provided at the bottom of the oil bag, the controller is connected to the pressure sensor 1, when the oil bag is filled with oil, the pressure sensor 1 can contact the ground and transmit the real-time pressure value F' to the controller.

[0018] By adopting the above technical solution, the controller determines whether the block is flat by detecting the pressure value F' between the pressure sensor 1 and the ground. When the pressure values ​​F' detected by each pressure sensor 1 are close, it means that the surface of the block is relatively flat and the test data is relatively accurate; when the pressure values ​​F' detected by each pressure sensor 1 are significantly different, it means that the surface flatness of the block is low, and the bracket needs to be adjusted, or the bracket needs to be placed horizontally by filling oil into the oil bag.

[0019] Preferably, the positioning end of the oil bag is provided with a second pressure sensor, the second pressure sensor is provided with a roller capable of abutting against the anchor bolt to be tested, the first oil pipeline is provided with a first solenoid valve, the second oil pipeline is provided with a second solenoid valve, the first solenoid valve, the second solenoid valve and the second pressure sensor are all connected to the controller;

[0020] During the test, the controller first sends an opening signal to the solenoid valve 2, causing the oil pump to fill oil into the oil bag until the roller at the positioning end of the oil bag abuts against the anchor bolt to be tested. The pressure sensor 2 transmits the real-time pressure value F to the controller. When the pressure value F detected by each pressure sensor 2 is between the preset threshold values ​​F1-F2, the controller sends an opening signal to the solenoid valve 1 after a period of time T.

[0021] By adopting the above technical solution, when the pressure values ​​F detected by each pressure sensor 2 are between F1-F2, it means that the pressure values ​​F generated by each oil bag on the anchor bolt are close, and the anchor bolt is at the center of the anchor bolt pulling test device. If there is a deviation, it can be adjusted manually, or the oil bag can react on the bracket under the action of oil pressure to move the bracket until all pressure values ​​F are between F1-F2. Only when the above conditions are met can the controller send an opening signal to the solenoid valve 1 to avoid the tester starting the test without alignment. The predetermined time length T is for the tester to complete the connection between the anchor bolt and the anchor bolt connecting block within this time.

[0022] Preferably, a baffle corresponding to the installation cavity is provided at the lower end of the bracket, one end of the baffle is hinged to the bracket, and a reset spring is provided between the two. When the baffle is in a reset state, the unfilled oil bag can be sealed in the installation cavity.

[0023] By adopting the above technical solution, a baffle is provided, and when not being tested, the oil bag can be stored in the installation cavity for easy movement.

[0024] Preferably, a load-bearing ring is provided at the bottom of the bracket, the center line of the load-bearing ring is colinear with the center line of the threaded hole of the anchor bolt connecting block, the load-bearing ring is provided with a threaded through hole in the vertical direction, a bolt is threadedly provided in the threaded through hole, and the end of the bolt can extend out of the threaded through hole, and the anchor bolt pulling test device also includes a plurality of spare anchor bolt connecting blocks, and the threaded hole of the anchor bolt connecting block can be threadedly connected to the bolt.

[0025] By adopting the above technical solution, during normal testing, the upper end of the bolt is screwed to the outside of the upper end of the threaded through-hole, and the lower end is located in the threaded through-hole. The bottom of the load-bearing ring contacts the building block, and the spare anchor connecting block is connected to the upper end of the bolt. When anchor connecting blocks of different types are needed, they can be replaced. When there are many anchors or uneven surfaces on the building block, and the load-bearing ring is difficult to place, the lower end of the bolt can be screwed to the lower end of the threaded through-hole, and the spare anchor connecting block can be connected to the lower end of the bolt, so that the spare anchor connecting block contacts the building block, thereby reducing the contact area with the building block and meeting the needs of special scenarios.

[0026] In a second aspect, the present application provides a testing method for an anchor pull-out testing device, which adopts the following technical solution:

[0027] A testing method for an anchor bolt pull-out testing device comprises the following steps:

[0028] S1: Place the bracket on the surface of the block so that the anchor to be tested is located at the center of the bracket's load-bearing ring;

[0029] S2: The controller sends an opening signal to the solenoid valve 2, and the solenoid valve 1 is in a closed state, so that the oil pump fills oil into the oil bag, and the oil bag extends from the mounting cavity of the bracket until the roller at the positioning end of the oil bag abuts against the anchor bolt to be tested;

[0030] S3: The pressure sensor 1 at the bottom of the oil bag contacts the surface of the block, and the pressure sensor 1 transmits the real-time pressure value F' to the controller, and the controller calculates the average value F" of the pressure detected by the pressure sensor 1;

[0031] When |F'-F"| is less than the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring and the block is in a flat state;

[0032] When |F'-F"| is greater than or equal to the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring and the block is in an uneven state, and the bracket position is adjusted;

[0033] S4: Pressure is generated between the pressure sensor 2 at the positioning end of the oil bag and the anchor bolt, and the controller determines whether the anchor bolt to be tested is located at the center of the load-bearing ring through the pressure value F detected by the pressure sensor 2;

[0034] When the pressure values ​​F detected by each of the second pressure sensors are between the preset threshold values ​​F1-F2, it is determined that the anchor bolt to be tested is at the center of the load-bearing ring;

[0035] When the pressure value F detected by any of the two pressure sensors is outside the preset threshold value F1-F2, it is determined that the anchor bolt to be tested is not at the center of the load-bearing ring at this time, and the bracket position is adjusted until the pressure value F detected by each of the two pressure sensors is between the preset threshold value F1-F2;

[0036] S5: Rotate the handle to lower the anchor bolt connection block to a preset position, so that the anchor bolt connection block is connected to the anchor bolt to be tested. This step is completed within the controller time T;

[0037] S6: The controller sends an opening signal to the solenoid valve 1 to drive the piston rod to lift up, stretch the anchor bolt, and detect the movement of the piston rod through the detection component to achieve the anchor bolt pulling test.

[0038] By adopting the above technical solution, when performing a pull-out test on the anchor bolt, first ensure the flatness between the load-bearing ring of the bracket and the contact surface of the block, then ensure that the anchor bolt is at the center of the load-bearing ring, and align the anchor bolt with the center line of the anchor bolt connecting block to improve the test accuracy.

[0039] In summary, the present application includes at least one of the following beneficial technical effects:

[0040] 1. When this device performs a pull-out test on an anchor bolt, first ensure the flatness between the load-bearing ring of the bracket and the contact surface of the block, then ensure that the anchor bolt is at the center of the load-bearing ring, and align the anchor bolt with the center line of the anchor bolt connecting block to improve the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0042] Figure 2 yes Figure 1 Enlarged view of part A.

[0043] Figure 3 It is a structural schematic diagram of the positioning component of an embodiment of the present application.

[0044] Figure 4 It is a schematic diagram of the principle of the oil bag after oil filling in the embodiment of the present application.

[0045] Figure 5 It is a schematic diagram of the structure of an embodiment of the present application using an anchor bolt connection block as a support point.

[0046] Explanation of the reference numerals in the accompanying drawings: 1. bracket; 11. main body; 12. connecting rod; 13. mounting cavity; 14. threaded through hole; 15. bolt; 16. load-bearing ring; 2. linear power cylinder; 21. cylinder body; 22. piston rod; 3. oil pump; 41. fixed guide frame; 42. moving guide frame; 43. guide rod; 5. detection assembly; 6. pull rod; 61. connector; 62. connecting pin; 63. handle; 7. mounting seat; 71. mounting groove; 8. positioning assembly; 81. oil bag; 82. baffle; 83. pressure sensor 1; 84. pressure sensor 2; 85. roller; 9. anchor bolt connecting block. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-5 This application is described in further detail.

[0048] like Figure 1 As shown, the anchor bolt pulling test device includes a bracket 1 and a linear power cylinder 2.

[0049] Specifically, the bottom of the bracket 1 has a load-bearing ring 16, and the linear power cylinder 2 includes a cylinder body 21 and a piston rod 22. The cylinder body 21 is fixed at the upper end of the bracket 1, and the piston rod 22 is arranged on the cylinder body 21 and can reciprocate along the vertical direction of the cylinder body 21.

[0050] In this embodiment, the linear power cylinder 2 is an oil cylinder, and the anchor bolt pulling test device also includes an oil pump 3, which is connected to the cylinder body 21 through an oil pipe 1. An electromagnetic valve 1 is provided on the oil pipe 1, and the electromagnetic valve 1 is connected to the controller.

[0051] As another solution, the linear power cylinder 2 may also adopt a linear motor.

[0052] like Figure 1 As shown, the cylinder body 21 of the linear power cylinder 2 is provided with a fixed guide frame 41 , the piston rod 22 of the linear power cylinder 2 is provided with a moving guide frame 42 , and a guide rod 43 is provided between the fixed guide frame 41 and the moving guide frame 42 .

[0053] In this embodiment, two guide holes are provided on the fixed guide frame 41, and there are two guide rods 43. The upper ends of the guide rods 43 are fixed to the movable guide frame 42, and the lower ends of the guide rods 43 pass through the guide holes to improve the stability of the movement of the piston rod 22.

[0054] like Figure 1 As shown, a detection component 5 capable of detecting the movement amount of the piston rod 22 is arranged between the piston rod 22 and the cylinder body 21 .

[0055] In this embodiment, the detection assembly 5 includes a displacement sensor disposed on the piston rod 22 .

[0056] The displacement sensor can be a Hall sensor, an inductor sensor, etc. When a Hall sensor is used, a magnet can be fixed on the piston rod 22 , and a Hall element corresponding to the magnet can be fixed on the cylinder body 21 . The Hall element is connected to the controller to detect the displacement of the piston rod 22 .

[0057] like Figure 1 As shown, the piston rod 22 is provided with a pull rod 6 in the vertical direction, and the lower end of the pull rod 6 is detachably connected to a mounting seat 7. The lower end of the mounting seat 7 is provided with a mounting groove 71 for the anchor bolt connecting block 9 to be embedded, and the anchor bolt connecting block 9 is provided with a threaded hole that can be threadedly connected to the anchor bolt.

[0058] In this embodiment, a connector 61 is provided at the lower end of the pull rod 6, and a through hole is provided in the horizontal direction of the connector 61, and a mounting hole coaxial with the through hole is provided in the mounting seat 7, and the same connecting pin 62 is inserted into the mounting hole and the through hole. When a different mounting seat 7 needs to be replaced, the connecting pin 62 can be taken out, the mounting hole on the replaced mounting seat 7 is aligned with the through hole on the connector 61, and the connecting pin 62 is re-inserted into the mounting hole and the through hole, so that the connector 61 is connected to the mounting seat 7.

[0059] As another solution, the connecting head 61 may be threadedly connected to the drawing rod 6 .

[0060] Preferably, the pulling rod 6 is a screw rod, which is spirally matched with the piston rod 22, the lower end of the screw rod is threadedly connected to the connecting head 61, and the upper end of the screw rod is provided with a handle 63 for driving the screw rod to rotate.

[0061] In this embodiment, the piston rod 22 is provided with a central hole which is spirally matched with the screw rod. When the driving handle 63 is rotated, the screw rod can move axially to adjust the height of the mounting seat 7 so that the anchor connecting block 9 can be connected to the anchor bolt to be tested at a suitable position, thereby improving the test range of the device.

[0062] like Figure 1 , Figure 2 As shown, a positioning assembly 8 is provided at the bottom of the bracket 1, and the positioning assembly 8 can abut against the anchor bolt to be tested to form a positioning.

[0063] In this embodiment, Figure 1 , Figure 2 , Figure 3 As shown, a mounting cavity 13 is provided at the bottom of the bracket 1. Preferably, four mounting cavities 13 are provided and are located between the load-bearing ring 16 and the body 11 of the bracket 1, aligned with the four vertical connecting rods 12 of the bracket 1. The connecting rods 12 can be made of high-strength alloy, and the opening of the mounting cavity 13 is toward the center line of the load-bearing ring 16.

[0064] The positioning assembly 8 includes a plurality of oil bags 81 , each of which has the same shape and size and is evenly distributed at the bottom of the bracket 1 . The fixed end of the oil bag 81 is fixed in the mounting cavity 13 , and the oil pump 3 is connected to the oil bag 81 via an oil delivery pipe 2 .

[0065] like Figure 1 As shown, the oil bag 81 can be embedded in the installation cavity 13 before being filled with oil, and a baffle 82 corresponding to the installation cavity 13 is provided at the lower end of the bracket 1. One end of the baffle 82 is hinged to the bracket 1, and a reset spring is provided between the two. When the baffle 82 is in the reset state, the unfilled oil bag 81 can be sealed in the installation cavity 13.

[0066] like Figure 4 As shown, after the oil bag 81 is filled with oil, the oil bag 81 is expanded so that the positioning end of the oil bag 81 abuts against the anchor bolt to be tested to form a positioning, so that the anchor bolt is located at the center line of the anchor bolt testing device.

[0067] like Figure 3 As shown, a pressure sensor 83 is provided at the bottom of the oil bag 81, and the controller is connected to the pressure sensor 83. When the oil bag 81 is filled with oil, the pressure sensor 83 can contact the ground and transmit the real-time pressure value F' to the controller. The controller determines whether the block is flat by detecting the pressure value F' between the pressure sensor 83 and the ground. When the pressure values ​​F' detected by each pressure sensor 83 are close, it means that the contact surface between the block and the bracket 1 is relatively flat and the test data is relatively accurate; otherwise, it is determined that the contact surface between the block and the bracket 1 is not flat.

[0068] like Figure 1 , Figure 3As shown, a second pressure sensor 84 is disposed at the positioning end of the oil bag 81 , and a roller 85 capable of abutting against the anchor bolt to be tested is disposed on the second pressure sensor 84 , and the second solenoid valve and the second pressure sensor 84 are both connected to the controller.

[0069] like Figure 5 As shown, the center line of the load-bearing ring 16 is colinear with the center line of the threaded hole of the anchor bolt connecting block 9, and the load-bearing ring 16 is provided with a threaded through hole 14 in the vertical direction. A bolt 15 is threadedly arranged in the threaded through hole 14, and the end of the bolt 15 can extend outside the threaded through hole 14. The anchor bolt pulling test device also includes a plurality of spare anchor bolt connecting blocks 9, and the threaded holes of the anchor bolt connecting blocks 9 can be threadedly connected with the bolt 15.

[0070] During normal testing, the upper end of the bolt 15 is screwed outside the upper end of the threaded through hole 14, and the lower end is located inside the threaded through hole 14. The bottom of the load-bearing ring 16 contacts the block, and the spare anchor bolt connection block 9 is connected to the upper end of the bolt 15. The threaded hole diameters of the spare anchor bolt connection block 9 may be different to accommodate anchor bolts of different diameters.

[0071] When the surface of the block has many anchor bolts or is uneven, and the load-bearing ring 16 is difficult to place, the lower end of the bolt 15 can be screwed to the lower end of the threaded through hole 14, and the spare anchor connecting block 9 can be connected to the lower end of the bolt 15, and the spare anchor connecting block 9 can be brought into contact with the block to reduce the contact area with the block and meet the needs of special scenarios.

[0072] This embodiment also provides a testing method for an anchor bolt pulling test device, comprising the following steps:

[0073] S1: Place the support 1 on the surface of the block so that the anchor bolt to be tested is located at the center of the load-bearing ring 16 of the support 1;

[0074] S2: The controller sends an opening signal to the solenoid valve 2, and the solenoid valve 1 is in a closed state, so that the oil pump 3 injects oil into the oil bag 81, and the oil bag 81 extends from the mounting cavity 13 of the bracket 1 until the roller 85 at the positioning end of the oil bag 81 abuts against the anchor bolt to be tested;

[0075] S3: The pressure sensor 83 at the bottom of the oil bag 81 contacts the surface of the block, and the pressure sensor 83 transmits the real-time pressure value F' to the controller, and the controller calculates the average value F" of the pressure detected by the pressure sensor 83;

[0076] When |F'-F"| is less than the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring 16 and the block is in a flat state;

[0077] When |F'-F"| is greater than or equal to the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring 16 and the block is in an uneven state, and the position of the bracket 1 is adjusted;

[0078] S4: Pressure is generated between the second pressure sensor 84 at the positioning end of the oil bag 81 and the anchor bolt, and the controller determines whether the anchor bolt to be tested is located at the center of the load-bearing ring 16 through the pressure value F detected by the second pressure sensor 84;

[0079] When the pressure values ​​F detected by each of the second pressure sensors 84 are between the preset threshold values ​​F1-F2, it is determined that the anchor bolt to be tested is at the center of the load-bearing ring 16 at this time;

[0080] When the pressure value F detected by any of the second pressure sensors 84 is outside the preset threshold value F1-F2, it is determined that the anchor bolt to be tested is not at the center of the load-bearing ring 16 at this time, and the position of the bracket 1 is adjusted until the pressure value F detected by each of the second pressure sensors 84 is between the preset threshold values ​​F1-F2;

[0081] S5: Rotate the handle 63 to lower the anchor bolt connection block 9 to a preset position, so that the anchor bolt connection block 9 is connected to the anchor bolt to be tested. This step is completed within the controller time T;

[0082] S6: The controller sends an opening signal to the solenoid valve 1 to drive the piston rod 22 to lift up, stretch the anchor bolt, and detect the movement of the piston rod 22 through the detection component 5 to achieve the anchor bolt pulling test.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anchor pull-out test device, characterized in that: The linear power cylinder (2) comprises a support (1) and a linear power cylinder (2), wherein the linear power cylinder (2) comprises a cylinder body (21) and a piston rod (22), wherein the cylinder body (21) is fixed to the support (1), and the piston rod (22) is arranged on the cylinder body (21) and can reciprocate along the vertical direction of the cylinder body (21), and a detection component (5) capable of detecting the movement amount of the piston rod (22) is arranged between the piston rod (22) and the cylinder body (21), and the piston rod (22) is provided with a pull rod (6) along the vertical direction, and the lower end of the pull rod (6) is detachably connected to a mounting seat (7), and the lower end of the mounting seat (7) is provided with a mounting groove (71) for an anchor bolt connection block (9) to be embedded, and the anchor bolt connection block (9) is provided with a threaded hole capable of being threadedly connected to an anchor bolt, and a positioning component (8) is arranged at the bottom of the support (1), and the positioning component (8) can abut against the anchor bolt to be tested to form a positioning; The linear power cylinder (2) is an oil cylinder. The anchor bolt pulling test device further comprises an oil pump (3). The oil pump (3) is connected to the cylinder body (21) via an oil delivery pipe 1. A mounting cavity (13) is provided at the bottom of the bracket (1). The positioning assembly (8) comprises a plurality of oil bags (81). The oil bags (81) have the same shape and size and are evenly distributed at the bottom of the bracket (1). The fixed ends of the oil bags (81) are fixed in the mounting cavity (13). The oil pump (3) is connected to the oil bags (81) via an oil delivery pipe 2. The oil bags (81) can be embedded in the mounting cavity (13) before oil filling. After the oil bags (81) are filled with oil, the positioning ends of the oil bags (81) can abut against the anchor bolt to be tested. The anchor bolt pulling test device further comprises a controller. A pressure sensor 1 (83) is provided at the bottom of the oil bag (81). The controller is connected to the pressure sensor 1 (83). When the oil bag (81) is filled with oil, the pressure sensor 1 (83) can contact the ground and transmit a real-time pressure value F' to the controller. A second pressure sensor (84) is disposed at the positioning end of the oil bag (81), and a roller (85) capable of abutting against an anchor bolt to be tested is disposed on the second pressure sensor (84). A first solenoid valve is disposed on the first oil delivery pipe, and a second solenoid valve is disposed on the second oil delivery pipe. The first solenoid valve, the second solenoid valve, and the second pressure sensor (84) are all connected to the controller; During the test, the controller first sends an opening signal to the second solenoid valve, causing the oil pump (3) to inject oil into the oil bag (81) until the roller (85) at the positioning end of the oil bag (81) abuts against the anchor bolt to be tested, and the second pressure sensor (84) transmits the real-time pressure value F to the controller. When the pressure value F detected by each second pressure sensor (84) is between the preset threshold values ​​F1-F2, the controller sends an opening signal to the first solenoid valve after a period of time T.

2. The anchor pull-out test device according to claim 1, characterized in that: The lower end of the pulling rod (6) is provided with a connecting head (61), the connecting head (61) is provided with a through hole in the horizontal direction, the mounting seat (7) is provided with a mounting hole coaxial with the through hole, and the same connecting pin (62) is inserted into the mounting hole and the through hole.

3. The anchor pull-out test device according to claim 2, characterized in that: The pulling rod (6) is a screw rod, the screw rod is spirally matched with the piston rod (22), the lower end of the screw rod is threadedly connected to the connecting head (61), and the upper end of the screw rod is provided with a handle (63) for driving the screw rod to rotate.

4. The anchor pull-out test device according to claim 3, characterized in that: The cylinder body (21) of the linear power cylinder (2) is provided with a fixed guide frame (41), the piston rod (22) of the linear power cylinder (2) is provided with a moving guide frame (42), and a guide rod (43) is provided between the fixed guide frame (41) and the moving guide frame (42).

5. The anchor pull-out test device according to claim 4, characterized in that: A baffle (82) corresponding one to one with the mounting cavity (13) is provided at the lower end of the bracket (1); one end of the baffle (82) is hinged to the bracket (1), and a return spring is provided between the two. When the baffle (82) is in a return state, the oil bag (81) that is not filled with oil can be sealed in the mounting cavity (13).

6. The anchor pull-out test device according to claim 5, characterized in that: A load-bearing ring (16) is provided at the bottom of the bracket (1), the center line of the load-bearing ring (16) is colinear with the center line of the threaded hole of the anchor bolt connection block (9), the load-bearing ring (16) is provided with a threaded through hole (14) in the vertical direction, a bolt (15) is threadedly provided in the threaded through hole (14), and the end of the bolt (15) can extend outside the threaded through hole (14), and the anchor bolt pulling test device also includes a plurality of spare anchor bolt connection blocks (9), the threaded holes of the anchor bolt connection blocks (9) can be threadedly connected to the bolts (15).

7. A testing method for an anchor pull-out testing device, characterized in that: The anchor pull-out test device as claimed in claim 6 comprises the following steps: S1: Place the support (1) on the surface of the block so that the anchor bolt to be tested is located at the center of the load-bearing ring (16) of the support (1); S2: The controller sends an opening signal to the second solenoid valve, and the first solenoid valve is in a closed state, so that the oil pump (3) injects oil into the oil bag (81), and the oil bag (81) extends from the mounting cavity (13) of the bracket (1) until the roller (85) at the positioning end of the oil bag (81) abuts against the anchor bolt to be tested; S3: The pressure sensor 1 (83) at the bottom of the oil bag (81) contacts the surface of the block, and the pressure sensor 1 (83) transmits the real-time pressure value F' to the controller, and the controller calculates the average value F" of the pressure detected by the pressure sensor 1 (83); S4: When |F'-F"| is less than the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring (16) and the block is in a flat state; When |F'-F"| is greater than or equal to the preset pressure difference ∆F, it is determined that the contact surface between the load-bearing ring (16) and the block is in an uneven state, and the position of the bracket (1) is adjusted; Pressure is generated between the second pressure sensor (84) at the positioning end of the oil bag (81) and the anchor bolt, and the controller determines whether the anchor bolt to be tested is located at the center of the load-bearing ring (16) through the pressure value F detected by the second pressure sensor (84); When the pressure values ​​F detected by each second pressure sensor (84) are between preset thresholds F1-F2, it is determined that the anchor bolt to be tested is at the center of the load-bearing ring (16); When the pressure value F detected by any of the second pressure sensors (84) is outside the preset threshold value F1-F2, it is determined that the anchor bolt to be tested is not at the center of the load-bearing ring (16) at this time, and the position of the bracket (1) is adjusted until the pressure value F detected by each of the second pressure sensors (84) is between the preset threshold value F1-F2; S5: rotating the handle (63) to lower the anchor bolt connection block (9) to a preset position, so that the anchor bolt connection block (9) is connected to the anchor bolt to be tested. This step is completed within the controller time T; S6: the controller sends an opening signal to the solenoid valve 1 to drive the piston rod (22) to lift up, thereby stretching the anchor bolt, and detecting the movement amount of the piston rod (22) through the detection component (5) to implement the anchor bolt pulling test.

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