A kind of anchorage, test device and test method for steel bar pull-out test

Abstract

The present invention relates to a rebar pull-out test anchor, a test device and a test method, and relates to the technical field of rebar pull-out test. The rebar pull-out test anchor comprises two anchoring bodies, a loading body and a locking structure. The anchoring bodies comprise a clamping body, an adjusting body and a fixed body. The loading body is located between the two anchoring bodies. The loading body and the two adjusting bodies are meshed through conical teeth. The clamping body cooperates with the guide rails spirally arranged on the end faces of the adjusting bodies through guide bars. The clamping body and the fixed body are slidably matched with the radial slide grooves provided on the fixed body. The locking structure is used to connect the two fixed bodies. The rebar pull-out test device comprises the above-mentioned anchor. The rebar pull-out test method is that the loading body rotates to drive the adjusting body to rotate and then the clamping body moves along the slide groove to realize the clamping body biting the rebar. The present invention can solve the technical problems of single anchor adaptation specifications and difficult disassembly in the prior art, and achieve the effects of quick disassembly, improved work efficiency and reduced labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of rebar pulling test, in particular to a rebar pulling test anchor, a test device and a test method. Background Art

[0002] The steel bar pull-out test is an on-site test of the anchoring force of the anchor body. Generally, 48-72 hours after the rebar is planted, a tensile test loading method can be performed on the planted rebar (referred to as planted rebar) using a tensile gauge.

[0003] When conducting a pull-out test on embedded rebar, the embedded rebar must first be fixed with an anchor. The anchor used must ensure that it is firmly and reliably fixed to the embedded rebar. The reliability of the anchor seriously affects the result of the pull-out test. In addition, since the number of embedded rebars that need to be tested is very large, the number of embedded rebars that need to be tested at one location is more than 50, and the diameters of the embedded rebars vary. Therefore, the anchor that needs to be used is easy to operate and has strong applicability.

[0004] In the prior art, a single anchor can only be compatible with one specification of rebar. Therefore, each time a rebar pulling test is conducted, the test personnel need to carry a lot of anchors of different specifications, and each test needs to select an anchor that matches the rebar specification from a large number of anchors, resulting in extremely low work efficiency. In addition, the anchor structure used on site is provided with a sleeve on the outside, and three tapered blocks are arranged circumferentially inside the sleeve. The rebar is inserted into the center hole surrounded by the three blocks, and the rebar is pulled in the opposite direction. Due to the effect of the taper, the three blocks lock the rebar in the middle. The above anchor is very difficult to remove the rebar, and usually a strong hammer is required to separate the block from the sleeve. After removal, the sleeve and the block will be severely damaged. The service life of the above anchor is very short, which is a great waste. Summary of the invention

[0005] One of the purposes of the present invention is to provide a rebar pull-out test anchor, which aims to solve the technical problems in the prior art of single matching specifications between the anchor and the rebar and difficulty in removing the rebar, so as to achieve the effect of not being restricted by the rebar diameter, convenient and quick tightening and removing the rebar, improving work efficiency and reducing the workload of test personnel.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a rebar pulling test anchor, comprising

[0007] 4. The repairing kit for automotive dents, according to claim 1, wherein the two trackbacks are connected along the path of the bolt, and the two trackbacks are connected along the path of the bolt. The two trackbacks are connected along the path of the bolt.

[0008] A loading body is located between the two adjusting bodies, and the outer periphery of the loading body is provided with second conical teeth meshing with the first conical teeth; and

[0009] A locking structure, used for fixedly connecting the two fixed bodies;

[0010] The loading body cooperates with the two adjusting bodies respectively to drive the adjusting bodies to rotate, thereby driving the engaging body to move in the sliding groove.

[0011] The above technical scheme realizes circumferential rotation of the adjusting body by rotating the loading body through the engagement of the second conical teeth on the surface of the loading body with the first conical teeth on the end face of the adjusting body. Since a spirally arranged guide rail is provided on the other end face of the adjusting body, the guide rail cooperates with the guide bar provided on the mating surface of the clamping body, and the clamping body is arranged in a fixed slide groove, the movement of the clamping body along the slide groove direction is realized; the clamping diameter in the middle part of the clamping body has a larger range, which can be suitable for various diameters of embedded rebars, making the application range of the anchor wider.

[0012] In a preferred example, the present invention can be further configured as follows: it also includes a connecting sleeve, the end of which is inserted and fixed in the second mounting through hole, and the connecting sleeve is connected to the regulating body via a bearing arranged outside the connecting sleeve.

[0013] By adopting the above technical solution, the connection between the adjusting body and the fixed body is made more firmly, and by providing the bearing, a certain supporting effect is played on the adjusting body, so that the adjusting body can rotate more smoothly and stably relative to the fixed body.

[0014] In a preferred example, the present invention can be further configured as follows: a single anchoring body is provided with three clamping bodies, and the angle between two adjacent clamping bodies is 120°.

[0015] By adopting the above technical solution, the six clamping bodies arranged on the two anchoring bodies can bite the implanted bars at the same time, which is sufficient to ensure the axial transmission of force during the pull-out test, lock the implanted bars in the clamping bodies, and ensure that the implanted bars are firmly and reliably fixed.

[0016] In a preferred example, the present invention can be further configured as follows: the engaging surface of the engaging body in contact with the embedded rebar is a curved surface.

[0017] By adopting the above technical solution, the curved surface structural design is conducive to increasing the contact area between the clamping body and the anchor bar, increasing the bite force between the clamping body and the anchor bar, and making the anchor bar more firmly and reliably fixed.

[0018] In a preferred example, the present invention can be further configured as follows: a guide structure is provided between the card body and the slide groove; the guide structure includes card grooves arranged on both sides of the card body and card strips arranged on both sides of the slide groove, and the card strips are plug-in and slidingly matched with the card grooves.

[0019] By adopting the above technical solution, the insertion and cooperation between the card slot and the card strip is used to guide the movement of the card body in the slide slot, and can prevent the card body from leaving the slide slot, thereby ensuring that the card body slides smoothly in the slide slot.

[0020] In a preferred example, the present invention can be further configured as follows: the end surfaces of the two fixing bodies provided with one end of the mounting groove are abutted and matched.

[0021] The structural design of the above-mentioned fixed body, by connecting the end faces of the fixed body, on the one hand makes the force on the fixed body balanced and the anchor as a whole more compact; on the other hand, the fixed body wraps the adjusting body and the loading body therein, and closes the space between the two adjusting bodies, which can prevent external dust or particles from entering between the two adjusting bodies, ensures good meshing between the loading body and the adjusting body, ensures smooth rotation of the adjusting body, and plays a certain protective role on the anchor.

[0022] In a preferred example, the present invention can be further configured as follows: the locking structure includes a stud inserted into the two fixing bodies and a nut connected to the end of the stud.

[0023] By adopting the above technical solution, the two fixing bodies are fixed more firmly and reliably, and are convenient for maintenance and disassembly, which is conducive to improving work efficiency.

[0024] In a preferred example, the present invention can be further configured as follows: a loading hole is provided at the outer end of the loading body, and the loading hole is used for plugging and matching with a driving member that drives the loading body to rotate.

[0025] By adopting the above technical solution, the driving member is inserted into the loading hole of the loading body to rotate the loading body, which saves time and effort, is convenient to operate, and is conducive to improving efficiency.

[0026] Another object of the present invention is to provide a rebar pulling test device, which aims to solve the technical problems existing in the prior art such as frequent replacement of anchors during the test, single specifications for matching anchors with rebars, and difficulty in removing rebars. It can achieve the goal of not being limited by the diameter of the rebars, convenient and quick tightening and removing the rebars, improving work efficiency and reducing the workload of test personnel.

[0027] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a rebar pull-out test device, comprising a rebar pull-out test anchor as described in any of the above items and a jack connected to the rebar pull-out test anchor, wherein a loader is provided on the jack.

[0028] By adopting the above technical scheme, the anchor is fixed to the rebar, the anchor is connected by a jack, the jack is loaded, and the load is maintained by the loader after reaching the design value. The above rebar pull-out test anchor can be adapted to rebars of various diameters, saving working time, reducing the labor intensity of test personnel, and improving work efficiency.

[0029] Another object of the present invention is to provide a method for testing the pull-out of embedded steel bars, which aims to solve the technical problems in the prior art of complex operating procedures and time-consuming and labor-intensive installation and removal of anchors, so as to achieve the effect of convenient and quick installation of anchors, reduce the labor intensity of test personnel and improve work efficiency.

[0030] To achieve the above object, the technical solution adopted by the present invention is: to provide a rebar pulling test method, using the above-mentioned rebar pulling test device, comprising the following steps:

[0031] Step 1), insert the driving member into the loading hole of the loading body, drive the loading body to rotate, and then drive the adjusting body to rotate, so that the clamping body moves outward along the sliding groove;

[0032] Step 2), insert the implanted steel bar into the first mounting through hole and the second mounting through hole;

[0033] Step 3), reversely rotate the driving member to make the loading body reversely rotate, thereby driving the adjusting body to reversely rotate, so that the clamping body moves inward along the slide groove, so that the end of the clamping body contacts the surface of the implanted bar, and the implanted bar is clamped between the clamping bodies;

[0034] Step 4) Connect the anchor body with the jack, load with the jack, and hold the load with the loader after reaching the design value;

[0035] Step 5) After the test is completed, the loading body is driven to rotate by the driving member, and then the adjusting body is driven to rotate, so that the clamping body moves outward along the slide groove, the anchor of the rebar pull-out test is removed from the rebar, and the test of the next rebar is continued.

[0036] The above technical solution has the advantages of smooth operation, convenient and quick installation of anchors, reduced labor intensity of test personnel and improved work efficiency.

[0037] In summary, the present invention includes at least one of the following beneficial technical effects:

[0038] 1. The clamping diameter in the middle of the clamping body has a large range, which can be applied to various diameters of rebars, making the application range of the anchor wider. When the test personnel are working, they only need to carry one anchor to complete the test work of all rebars on the construction site, which reduces the labor intensity of the test personnel and improves the work efficiency of the inspection unit; and the anchor structure is reasonably designed, compact, smooth, easy to operate, saving time and effort, and is conducive to improving work efficiency;

[0039] 2. The six clamping bodies provided on the two anchoring bodies simultaneously engage the implanted steel bars, which is sufficient to ensure the axial transmission of force during the pull-out test, lock the implanted steel bars in the clamping bodies, and ensure that the implanted steel bars are firmly and reliably fixed;

[0040] 3. The plug-in cooperation between the card slot and the card strip is used to guide the movement of the card body in the slide slot, and can prevent the card body from leaving the slide slot, ensuring that the card body slides smoothly in the slide slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a reinforcement pull-out test anchor provided by an embodiment of the present invention;

[0042] Figure 2 yes Figure 1 A cross-sectional view of

[0043] Figure 3 yes Figure 1 A schematic diagram of a structure in which the regulating body is respectively connected with the clamping body and the loading body;

[0044] Figure 4 yes Figure 1 A schematic diagram of the structure of the fixed body in FIG.

[0045] Figure 5 yes Figure 1 A schematic diagram of the structure of the card connection body;

[0046] Figure 6 yes Figure 1 Schematic diagram of the structure of the regulator in;

[0047] Figure 7 yes Figure 1 A schematic diagram of the structure of another orientation of the regulating body;

[0048] Figure 8 yes Figure 1 Schematic diagram of the structure of the loader in .

[0049] In the figure: 1, connecting sleeve, 2, fixing body, 201, sliding groove, 202, second mounting hole, 203, clamping strip, 204, protrusion, 205, matching hole, 4, adjusting body, 401, guide rail, 402, first conical tooth, 403, first mounting hole, 5, loading body, 501, second conical tooth, 502, loading hole, 503, groove, 6, bearing, 7, clamping body, 701, guide strip, 702, clamping surface, 703, clamping groove, 8, locking structure. DETAILED DESCRIPTION

[0050] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0051] Please refer to Figure 1-3 As shown, a rebar pulling test anchor disclosed in the present invention comprises an anchoring body, a loading body 5 and a locking structure 8; two anchoring bodies are provided, and the upper and lower anchoring bodies are arranged face to face and correspond to each other, and the anchoring body comprises at least three clamping bodies 7, a cylindrical adjusting body 4 and a fixing body 2 for connecting the clamping body 7 and the adjusting body 4; the adjusting body 4 is a cylinder, and a first mounting through hole 403 is provided at the center of the adjusting body 4, and a first conical tooth 402 is provided on one end face of the adjusting body 4 concentrically arranged with the first mounting through hole 403, and a guide rail 401 is provided on the other end face concentrically arranged with the first mounting through hole 403 and spirally arranged, and the spiral directions of the two guide rails 401 are the same (refer to Figure 6 , 7 As shown); the first conical teeth 402 of the two anchoring bodies are arranged face to face, that is, the sides of the two anchoring bodies provided with the first conical teeth 402 are arranged opposite to each other; the center of the fixed body 2 is provided with a second mounting through hole 202 concentric with the first mounting through hole 403, one end face of the fixed body 2 is provided with a slide groove 201 the same number as the clamping body 7 and the length direction is along the radial direction of the second mounting through hole 202, and the other end face is provided with a mounting groove for mounting the adjusting body 4, the fixed body 2 is rotatably connected to the adjusting body 4, the mounting groove is a circular groove, the circular groove is concentrically arranged with the second mounting through hole 202, the adjusting body 4 is installed in the circular groove, and the side of the adjusting body 4 provided with the guide rail 401 corresponds to the groove bottom of the mounting groove, and the side of the adjusting body 4 provided with the conical teeth protrudes out of the mounting groove (refer to Figure 4As shown); the clamping body 7 is a rectangular slider, and the two side surfaces of the slider end are inclined conical surfaces. The end of the slider is used to connect the implanted reinforcement. The clamping body 7 is slidably matched with the slide groove 201. The matching surface of the clamping body 7 corresponding to the slide groove 201 is provided with a plurality of spaced and arc-shaped guide bars, and the guide bars are matched and connected with the guide rail 401; there is at least one loading body 5, preferably three loading bodies 5 and three clamping bodies 7 are arranged in an upper and lower staggered manner, and the loading body 5 is located between the two adjusting bodies 4. The outer periphery of the loading body 5 is provided with a second conical tooth 501 meshing with the first conical tooth 402, and the loading body 5 is respectively matched and connected with the upper and lower adjusting bodies 4 (refer to Figure 2 , 3 and 8); the above structural design can realize that the loading body 5 cooperates with the two adjusting bodies 4 respectively, drives the adjusting bodies 4 to rotate, and then drives the clamping body 7 to move in the slide groove 201, and the three ends of the clamping body 7 are connected to the embedded steel bars, so as to fix the embedded steel bars in the anchor; the locking structure 8 is used to fix the two fixed bodies 2; the loading body 5 cooperates with the two adjusting bodies 4 respectively, and is used to drive the adjusting bodies 4 to rotate, and then drives the clamping body 7 to move in the slide groove 201.

[0052] The main working principle of the above technical solution is: the second conical teeth 501 on the surface of the loading body 5 are meshed with the first conical teeth 402 on the end face of the adjusting body 4, so as to realize the circumferential rotation of the adjusting body 4 by rotating the loading body 5. Since a spirally arranged guide rail 401 is provided on the other end face of the adjusting body 4, the guide rail 401 cooperates with the guide bar arranged on the matching surface of the clamping body 7, and the clamping body 7 is arranged in a fixed slide groove 201, the movement of the clamping body 7 along the direction of the slide groove 201 is realized.

[0053] The use process of the above-mentioned anchor is as follows: first, drive the loading body 5 to rotate by external force, and then drive the adjusting body 4 to rotate, so that the clamping body 7 moves outward along the slide groove 201; when there is enough space in the central area surrounded by the clamping body 7, insert the anchor bar into the connecting sleeve 1; then, use external force to make the loading body 5 rotate in the opposite direction, and then drive the adjusting body 4 to rotate in the opposite direction, so that the clamping body 7 moves inward along the slide groove 201, so that the end of the clamping body 7 is in contact with the surface of the anchor bar, and the anchor bar is clamped between the clamping bodies 7. Continuously apply external force, and the anchor bar can be firmly locked between the clamping bodies 7; finally, the jack can be connected for testing.

[0054] The beneficial effects of this embodiment are as follows: this anchor is provided with two anchor main bodies, and thus has six clamping bodies 7. Six clamping bodies 7 that slide simultaneously in the radial direction simultaneously apply radial force to the embedded steel bars, and thus the embedded steel bars can be firmly and reliably fixed. In addition, the clamping bodies 7 have a larger sliding distance relative to the slide groove 201, and therefore the clamping diameter in the middle of the clamping bodies 7 has a larger range, and can be applicable to embedded steel bars of various diameters, so that the application range of the anchor is wider, and when the test personnel are working, they only need to carry one anchor to complete the test work of all embedded steel bars on the construction site, which reduces the labor intensity of the test personnel and improves the work efficiency of the inspection unit. In addition, the anchor has a reasonable structural design, a compact structure, smooth transmission, and is easy to operate, saving time and effort, and is conducive to improving work efficiency.

[0055] Please refer to Figure 1 and Figure 2 As shown, as a specific embodiment of the anchor for testing the anchor for pulling out the rebar provided by the present invention, the anchor for testing the anchor for pulling out the rebar further includes a connecting sleeve 1, the end of which is plugged and fixed in the second mounting through hole 202, and the connecting sleeve 1 is connected to the adjusting body 4 through a bearing 6 arranged outside the connecting sleeve 1 (refer to Figure 2 as shown).

[0056] The above technical solution makes the connection between the adjusting body 4 and the fixed body 2 more firmly, and by providing the bearing 6, a certain supporting effect is played on the adjusting body, so that the adjusting body can rotate more smoothly and stably relative to the fixed body.

[0057] Please refer to Figure 1 As shown, as a specific embodiment of the anchor for the anchor pull-out test provided by the present invention, a single anchoring body is provided with three clamping bodies 7, and the angle between two adjacent clamping bodies 7 is 120°.

[0058] The above technical solution, through the six clamping bodies 7 provided on the two anchoring bodies, simultaneously bites the implanted bars, which is sufficient to ensure the axial transmission of force during the pull-out test, locks the implanted bars in the clamping bodies 7, and ensures that the implanted bars are firmly and reliably fixed.

[0059] Please refer to Figure 2 and Figure 5 As shown, as a specific embodiment of the anchor for the rebar pull-out test provided by the present invention, the clamping surface 702 of the clamping body 7 that contacts the rebar is a curved surface, and the curved surface matches the surface of the rebar.

[0060] The structural design of the curved surface is conducive to increasing the contact area between the clamping body 7 and the anchor bar, increasing the bite force between the clamping body 7 and the anchor bar, and making the anchor bar more firmly and reliably fixed.

[0061] Please refer to Figure 4 and Figure 5As shown, as a specific embodiment of the anchor for anchor bar pull-out test provided by the present invention, a guide structure is also provided between the clamping body 7 and the slide groove 201; the guide structure includes a clamping groove 703 arranged on both sides of the clamping body 7 and a clamping strip 203 arranged on both sides of the slide groove 201, and the clamping strip 203 is plugged and slidably matched with the clamping groove 703.

[0062] The insertion and cooperation between the above-mentioned card slot 703 and the card strip 203 is used to guide the movement of the card body 7 in the slide slot 201, and can prevent the card body 7 from leaving the slide slot 201, thereby ensuring that the card body 7 slides smoothly in the slide slot 201.

[0063] Please refer to Figure 1 and Figure 2 As shown, as a specific embodiment of the anchor for anchoring the rebar pull-out test provided by the present invention, the end faces of the two fixing bodies 2 provided with one end of the mounting groove are abutted and matched, a matching hole 205 is provided on the side wall of the fixing body, a protrusion 204 is provided in the matching hole 205, the outer end of the loading body 5 is cylindrical, and the outer surface of the cylinder is provided with a groove 503, the outer end of the loading body 5 is inserted into the matching hole 205, and the protrusion 204 is clamped in the groove 503 and rotates.

[0064] The structural design of the above-mentioned fixed body 2, by connecting the end faces of the fixed body 2, on the one hand, balances the force on the fixed body 2 and makes the anchor more compact as a whole; on the other hand, the fixed body 2 wraps the adjusting body 4 and the loading body 5 therein, and closes the space between the two adjusting bodies 4, which can prevent external dust or particles from entering between the two adjusting bodies 4, ensures good engagement between the loading body 5 and the adjusting body 4, ensures smooth rotation of the adjusting body 4, and plays a certain protective role on the anchor.

[0065] Please refer to Figure 1 As shown, as a specific embodiment of the anchor for testing the anchor for pulling out the rebar provided by the present invention, the locking structure 8 includes a stud passing through the two fixing bodies 2 and a nut connected to the end of the stud.

[0066] The above technical solution makes the two fixing bodies 2 more firmly and reliably fixed, and is convenient for maintenance and disassembly, which is conducive to improving work efficiency.

[0067] Please refer to Figure 2 and Figure 8 As shown, as a specific embodiment of the anchor for the rebar pulling test provided by the present invention, a loading hole 502 is provided at the outer end of the loading body 5, and the loading hole 502 is used to be plugged with a driving member that drives the loading body 5 to rotate, and the loading hole 502 can be rectangular or hexagonal. The driving member can be a hexagonal screwdriver, a key, or other rod-shaped or plate-shaped object, which is connected to the loading hole 502 through the screwdriver, thereby driving the loading body 5 to rotate.

[0068] In the above technical solution, the driving member is inserted into the loading hole 502 of the loading body 5 to rotate the loading body 5, which saves time and effort, is convenient to operate, and is conducive to improving efficiency.

[0069] Another object of the present invention is to provide a rebar pull-out test device, comprising a rebar pull-out test anchor as described in any one of the above items and a jack connected to the rebar pull-out test anchor, wherein a loader is provided on the jack.

[0070] The anchor adopted in the above-mentioned rebar pulling test device can mesh the second conical teeth 501 on the surface of the loading body 5 with the first conical teeth 402 on the end face of the adjusting body 4, so as to realize the circumferential rotation of the adjusting body 4 by rotating the loading body 5. Since a spirally arranged guide rail 401 is provided on the other end face of the adjusting body 4, the guide rail 401 cooperates with the guide bar 701 arranged on the mating surface of the clamping body 7, and the clamping body 7 is arranged in a fixed slide groove 201, the movement of the clamping body 7 along the direction of the slide groove 201 is realized, and the clamping body 7 moves radially toward the center to firmly bite the rebar.

[0071] The above-mentioned rebar pulling test device is intended to solve the technical problems existing in the prior art such as frequent replacement of anchors during the test, single specifications for matching anchors and rebars, and difficulty in removing rebars. It is not limited by the diameter of the rebars, and can tighten and remove the rebars conveniently and quickly, thereby improving work efficiency and reducing the workload of test personnel.

[0072] Another object of the present invention is to provide a method for testing the pull-out of a rebar, which adopts the above-mentioned test device for testing the pull-out of a rebar, and comprises the following steps: step 1), inserting a driving member into the loading hole 502 of the loading body 5, driving the loading body 5 to rotate, thereby driving the adjusting body 4 to rotate, and causing the clamping body 7 to move outward along the slide groove 201; step 2), inserting the rebar into the first mounting through hole 403 and the second mounting through hole 202; step 3), rotating the driving member in the opposite direction, causing the loading body 5 to rotate in the opposite direction, thereby driving the adjusting body 4 to rotate in the opposite direction, causing the clamping body 7 to move inward along the slide groove 201, causing the end of the clamping body 7 to contact the surface of the rebar, and clamping the rebar between the clamping bodies 7; step 4), connecting the anchoring body with a jack, loading the jack, and holding the load by a loader after reaching the design value; step 5), after the test is completed, driving the loading body 5 to rotate by the driving member, thereby driving the adjusting body 4 to rotate, causing the clamping body 7 to move outward along the slide groove 201, removing the rebar pull-out test anchor from the rebar, and continuing to test the next rebar.

[0073] The above-mentioned anchor bar pulling test method realizes the engagement of the anchor bar by rotating the loading body 5 so that the clamping body 7 moves along the slide groove 201. The method is convenient to use and has strong versatility, reduces the labor intensity of the test personnel, and improves the work efficiency.

[0074] The above-mentioned rebar pulling test method is intended to solve the technical problems of the existing technology in the test process, such as the single specification of anchor and rebar adaptation and the difficulty in removing rebar. It can achieve the goal of not being limited by the diameter of rebar, fastening and removing rebar conveniently and quickly, improving work efficiency and reducing the work intensity of test personnel.

[0075] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel bar pull-out test anchor, characterized in that: include An anchoring body is provided with two, comprising at least three snap-fitting bodies (7), a columnar adjusting body (4), and a fixing body (2) for connecting the snap-fitting body (7) and the adjusting body (4); a first mounting through hole (403) is provided at the center of the adjusting body (4); one end surface of the adjusting body (4) is provided with a first conical tooth (402) arranged concentrically with the first mounting through hole (403); the other end surface is provided with a guide rail (401) arranged concentrically with the first mounting through hole (403) and spirally, and the spiral directions of the two guide rails (401) are the same; the first conical teeth (402) of the two anchoring bodies are arranged face to face; the fixing body (2) is provided with a first conical tooth (402) arranged concentrically with the first mounting through hole (403); A second mounting through hole (202) concentric with the first mounting through hole (403) is provided at the center of the body (2); a slide groove (201) having the same number as the number of the clamping body (7) and a length direction along the radial direction of the second mounting through hole (202) is provided on one end surface of the fixed body (2); a mounting groove for mounting the adjusting body (4) is provided on the other end surface; the fixed body (2) is rotatably connected with the adjusting body (4); the clamping body (7) is slidably matched with the slide groove (201); a plurality of spaced and arc-shaped guide bars are provided on the matching surface of the clamping body (7) corresponding to the slide groove (201); the guide bars are matched and connected with the guide rail (401); a loading body (5) located between the two adjusting bodies (4), the outer periphery of the loading body (5) being provided with second conical teeth (501) meshing with the first conical teeth (402); and A locking structure (8) used for fixedly connecting the two fixed bodies (2); The loading body (5) cooperates with the two adjusting bodies (4) respectively, and is used to drive the adjusting bodies (4) to rotate, thereby driving the clamping body (7) to move in the sliding groove (201); It also comprises a connecting sleeve (1), the end of the connecting sleeve (1) being inserted and fixed in the second mounting through hole (202), and the connecting sleeve (1) and the regulating body (4) being connected via a bearing (6) arranged outside the connecting sleeve (1); A guide structure is also provided between the clamping body (7) and the slide groove (201); the guide structure comprises clamping grooves (703) provided on two side surfaces of the clamping body (7) and clamping strips (203) provided on two sides of the slide groove (201); the clamping strips (203) and the clamping grooves (703) are plug-connected and slidably matched; The test steps are as follows: Step 1), inserting the driving member into the loading hole (502) of the loading body (5), driving the loading body (5) to rotate, thereby driving the adjusting body (4) to rotate, so that the clamping body (7) moves outward along the sliding groove (201); Step 2), inserting the implanted reinforcement into the first installation through hole (403) and the second installation through hole (202); Step 3), the driving member is rotated in the reverse direction to rotate the loading body (5) in the reverse direction, thereby driving the adjusting body (4) to rotate in the reverse direction, so that the clamping body (7) moves inward along the slide groove (201), so that the end of the clamping body (7) contacts the surface of the implanted bar, and the implanted bar is clamped between the clamping bodies (7); Step 4) Connect the anchor body with the jack, load with the jack, and hold the load with the loader after reaching the design value; Step 5) After the test is completed, the loading body (5) is driven to rotate by the driving member, thereby driving the adjusting body (4) to rotate, so that the clamping body (7) moves outward along the slide groove (201), the anchor for the rebar pull-out test is removed from the rebar, and the test of the next rebar is continued.

2. A steel bar pull-out test anchor according to claim 1, characterized in that: The single anchoring body is provided with The three clamping bodies (7) have an included angle of 120° between two adjacent clamping bodies (7).

3. A rebar pull-out test anchor according to any one of claims 1-2, characterized in that: The clamping surface (702) of the clamping body (7) that contacts the embedded reinforcement is a curved surface.

4. The anchor for testing the steel bar pull-out according to claim 1, characterized in that: The end surfaces of the two fixing bodies (2) provided with one end of the mounting groove are abutted and matched.

5. A steel bar pull-out test anchor according to claim 4, characterized in that: The locking structure (8) comprises a stud that penetrates into the two fixing bodies (2) and a nut connected to the end of the stud.

6. The anchor for testing the steel bar pull-out according to claim 1, characterized in that: The outer end of the loading body (5) is provided with a loading hole (502), and the loading hole (502) is used for plugging and cooperating with a driving member that drives the loading body (5) to rotate.

7. A rebar pulling test device, characterized in that: A reinforcing bar planting system comprising a reinforcing bar planting system as claimed in any one of claims 1 to 6 A pull-out test anchor and a jack connected to the rebar pull-out test anchor, wherein a loader is provided on the jack.

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