Device and method for controllably locking steel strand

Abstract

The present application relates to a device and method for controllably locking a steel strand, comprising: an anchor, one end of which contacts a concrete member or a steel member and is provided with a plurality of first reserved holes extending in a first direction; a pressing component, which is arranged corresponding to the end surface of the anchor facing away from the concrete member or the steel member and is provided with a plurality of second reserved holes extending in the first direction; a blocking component, which is installed between the pressing component and the anchor and is provided with a plurality of third reserved holes extending in the first direction, the third reserved holes, the second reserved holes and the first reserved holes being arranged in a one-to-one correspondence; a plurality of locking components, each of which has one end abutting against the end surface of the pressing component close to the anchor and the other end extending through the third reserved hole to the first reserved hole, the locking component being provided with a first clamping portion extending around its own periphery, the blocking component surrounding the periphery of each third reserved hole and being clamped in the first clamping portion; the pressing component is pushed so that the locking component completely enters the reserved hole to complete the locking.

Description

Technical Field

[0001] The present application relates to the technical field of prestressed steel construction, and in particular to a device and method for controllably locking a steel strand. Background Art

[0002] Anchor rods are often used in foundation pit projects and slope control projects. According to relevant specifications and design requirements, the pull-out bearing capacity of the anchor rod must be tested before locking. Only when the pull-out bearing capacity of the anchor rod meets the requirements can it be unloaded to the locking value for locking. The main tensile material of the anchor rod is steel strand.

[0003] In the prior art, the construction process of tensioning and locking the steel strands requires the installation of jacks twice. First, the tensioning jack is installed, and a certain prestress is applied to the steel strands through the tensioning jack to test whether the pull-out bearing capacity of the anchor rod meets the national standard. Then, the tensioning jack is unloaded to release the prestress, and then the clip is installed. The tensioning jack is installed again, and a certain prestress is applied to the steel strands through the tensioning jack. The tensioning jack is unloaded, and the steel strands retract to drive the clip to complete self-locking.

[0004] There are three deficiencies in the existing technology. First, it is necessary to install and uninstall the jack twice to achieve the tensioning and locking of the steel strands. The process of installing and uninstalling the jack is laborious and time-consuming. Second, the shrinkage of the steel strands during self-locking is relatively large, the stress loss is large, and the locking of multiple steel strands is not synchronized. Third, the steel strands are scratched by the clips during tensioning. Therefore, how to provide a device that can measure whether the pull-out bearing capacity of the anchor rod meets the national standards by installing the jack only once, and can also complete accurate locking by controlling the clips without scratching the steel strands is a problem that technicians in this field urgently need to solve. Summary of the invention

[0005] In order to completely solve the above technical problems or at least partially solve the above technical problems, the present application provides a device and method for controllable locking of steel strands, which can measure whether the pull-out bearing capacity of the anchor rod meets the national standards by installing the jack only once, and can also complete the precise locking of the steel strand by controlling the locking components.

[0006] On the one hand, an embodiment of the present invention provides a device for controllably locking a steel strand, comprising: an anchor, one end of which contacts a concrete member or a steel member and is provided with a plurality of first reserved holes extending along a first direction; a pressing component, which is arranged corresponding to the end surface of the anchor facing away from the concrete member or the steel member, the pressing component is provided with a plurality of second reserved holes extending along the first direction, and the second reserved holes are arranged one-to-one with the first reserved holes; a blocking component, which is installed between the pressing component and the anchor and is provided with a plurality of third reserved holes extending along the first direction, and the third reserved holes are arranged one-to-one with the first reserved holes; a plurality of locking components, each of which has one end abutting against the end surface of the pressing component close to the anchor and the other end extending through the third reserved hole to the first reserved hole, the locking component is provided with a first clamping portion extending around its own periphery, and the blocking component surrounds the periphery of each of the third reserved holes and is clamped on the first clamping portion; the pressing component is pushed so that the locking component completely enters the first reserved hole to complete the locking.

[0007] In some optional embodiments, the locking component is provided with a second locking portion extending around its outer circumference, and the first locking portion and the second locking portion are arranged in parallel in the length direction of the locking component.

[0008] In some optional embodiments, the first clamping portion is a first groove, and the second clamping portion is a second groove.

[0009] In some optional embodiments, the first groove can cooperate with the peripheral clearance surrounding each of the third reserved holes.

[0010] In some optional embodiments, a pushing mechanism is further included, wherein the pushing mechanism pushes the pressing component to make the locking component completely enter the first reserved hole to complete locking.

[0011] In some optional embodiments, the pushing mechanism is a hydraulic control mechanism, which includes an outer shell, an inner shell, a piston and a spring. The inner shell is sleeved inside the outer shell, the piston is arranged between the inner shell and the outer shell, and the spring is sleeved on the outer surface of the piston.

[0012] In some optional embodiments, a limiting component is further included, and the limiting component is installed between the outer surface of the anchor structure and the inner surface of the shell.

[0013] In some optional embodiments, the locking component is provided with a fourth reserved hole extending along the first direction, and the inner surface of the locking component surrounding the fourth reserved hole is provided with engaging teeth.

[0014] On the other hand, the present invention provides a blocking component, which is the blocking component described in any one of the above items, and the blocking component is installed between the top pressure component and the anchor, and is provided with a plurality of third reserved holes extending along the first direction, and the third reserved holes are arranged one-to-one with the first reserved holes.

[0015] In some optional embodiments, the plurality of third reserved holes are evenly distributed in a ring array around the center of the blocking component, and each of the third reserved holes and the outer contour of the blocking component are respectively provided with elastic seams that are interconnected.

[0016] In some optional embodiments, the blocking component is evenly provided with a plurality of notches along its outer circumference, and each of the notches is provided with a third reserved hole on both sides thereof.

[0017] On the other hand, the present invention provides a hydraulic control mechanism, which is the hydraulic control mechanism described in any one of the above items, and the hydraulic control mechanism includes an outer shell, an inner shell, a piston and a spring, the inner shell is sleeved inside the outer shell, the piston is arranged between the inner shell and the outer shell, and the spring is sleeved on the outer surface of the piston.

[0018] On the other hand, the present invention provides a method for tensioning and locking a steel strand, installing anchors, blocking components, locking components and pressing components at corresponding positions of the steel strand; pushing the pressing component to make the locking component move completely to the anchor structure to complete locking.

[0019] In some optional embodiments, after the steps of installing the anchor, the blocking component, the locking component and the pressing component, the method further includes stretching the steel strand to a first prestress by a tensioning jack.

[0020] In some optional embodiments, after the step of stretching the steel strands to the first prestress by the tensioning jack, the step further includes: releasing the stress of the steel strands bearing the first prestress to a second prestress.

[0021] In some optional embodiments, the step of pushing the pressing component to make the locking component completely move to the anchor structure to complete locking also includes: after the steel strand releases the stress to the second prestress, pushing the pressing component through a hydraulic control mechanism to make the locking component completely move to the anchor structure to complete locking.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] The device for controllably locking the steel strand includes an anchor, a pressing component, a blocking component and a locking component. The anchor, the blocking component and the pressing component are sequentially arranged in the extending direction of the steel strand. One end of each locking component abuts against the end surface of the pressing component close to the anchor, and the other end passes through the third reserved hole of the blocking component and extends to the first reserved hole of the anchor. One end of the steel strand is pre-buried in the soil or rock layer, and the other end passes through the first reserved hole, the third reserved hole, the fourth reserved hole of the locking component and the second reserved hole in sequence. First, a first prestress is applied to the steel strand to stretch the steel strand to a certain length. Under the blocking effect of the top pressure component, the locking component cannot move in the stretching direction of the steel strand. Then the tensioning jack is unloaded to release the prestress of the steel strand. During the release of the prestress of the steel strand, the outer peripheries of the third reserved holes in the locking component are respectively clamped in the first clamping parts, thereby ensuring that the locking component cannot move to the inside of the first reserved hole of the anchor. When the prestress of the steel strand is about to be released to the locking value, the top pressure component is pushed, and the locking component is pushed toward the first reserved hole in the anchor by the top pressure component until the outer peripheries of the third reserved holes in the locking component are completely separated from the first clamping parts, and the locking component enters the first reserved hole and hugs the steel strand. The steel strand retracts and drives the locking component to move completely into the first reserved hole in the anchor to complete the locking. It can ensure that the force on each steel strand is uniform, and it can also ensure that each locking component can completely enter the first reserved hole to hold the steel strand tightly. Moreover, it only takes one time to install the tensioning jack to measure whether the stretching degree of the steel strand meets the national standards, and to control the locking component to complete precise locking when the steel strand is subjected to any prestress. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A schematic cross-sectional structure diagram of a device for controllably locking a steel strand provided in an embodiment of the present application;

[0027] Figure 2 A schematic cross-sectional structure diagram of the connection between the locking component and the blocking component provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of the blocking component provided in an embodiment of the present application.

[0029] Figure markings: 1-anchor; 11-first reserved hole; 2-pressing component; 21-second reserved hole; 3-blocking component; 31-third reserved hole; 32-elastic seam; 4-locking component; 41-fourth reserved hole; 5-concrete member; 51-steel member; 6-hydraulic control mechanism; 61-outer shell; 612-oil inlet nozzle; 62-inner shell; 63-piston; 64-spring; 7-limiting component; 8-first clamping part; 81-second clamping part; 9-steel strand; 10-pad. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] like Figure 1 As shown, the present application provides a device for controllably locking a steel strand, comprising: an anchor 1, a pressing component 2, a blocking component 3, and a plurality of locking components 4, wherein one end of the anchor 1 contacts a member 5 or a steel member 51, and is provided with a plurality of first reserved holes 11 extending in a first direction; the pressing component 2 is arranged corresponding to the end surface of the anchor 1 away from the concrete member 5 or the steel member 51, and is provided with a plurality of second reserved holes 21 extending in the first direction, and the second reserved holes 21 are arranged one-to-one with the first reserved holes 11; the blocking component 3 is installed between the pressing component and A plurality of third reserved holes 31 extending along the first direction are provided between the anchors 1, and the third reserved holes 31 are provided one-to-one with the first reserved holes 11; one end of each locking component 4 is against the end face of the pressing component 2 close to the anchor 1, and the other end passes through the third reserved hole 31 and extends to the first reserved hole 11; the locking component 4 is provided with a first clamping portion 8 extending around its own periphery, and the blocking component 3 surrounds the periphery of each third reserved hole 31 and is clamped on the first clamping portion 8; the pressing component 2 is pushed so that the locking component 4 completely enters the first reserved hole 11 and is locked.

[0032] Furthermore, the device for controllably locking the steel strands also includes steel strands 9, each of which extends from the concrete component 5 or the steel component 51, passes through the first reserved hole 11 of the anchor 1, the third reserved hole 31 of the blocking component 3, the fourth reserved hole 41 of the locking component 4 and the second reserved hole 21 of the pressing component 2, until extending to the outside of the second reserved hole 21 facing away from the concrete component 5 or the steel component 51.

[0033] In some optional embodiments, the locking component 4 is provided with a second clamping portion 81 extending around its own periphery, the first clamping portion 8 and the second clamping portion 81 are arranged in parallel in the length direction of the locking component 4, the first clamping portion 8 is a first groove, the second clamping portion 81 is a second groove, and the first groove can cooperate with the peripheral gap surrounding each third reserved hole 31.

[0034] Specifically, one end of the steel strand 9 is pre-buried in the soil or rock layer, and the other end passes through the first reserved hole 11, the third reserved hole 31, the fourth reserved hole 41 of the locking component 4, and the second reserved hole 21 in sequence, and extends to the outside away from the second reserved hole 21. The device for controllably locking the steel strand includes an anchor 1, a top-pressing component 2, a blocking component 3, and a locking component 4. The anchor 1, the blocking component 3, and the top-pressing component 2 are sequentially stacked in the extending direction of the steel strand. One end of each locking component 4 abuts against the end face of the top-pressing component 2 close to the anchor 1, and the other end passes through the third reserved hole 31 of the blocking component 3 and extends to the first reserved hole 11 of the anchor 1. One end of the steel strand is pre-buried in the soil or rock layer, and the other end passes through the first reserved hole 11, the third reserved hole 31, the fourth reserved hole 41 of the locking component 4, and the second reserved hole 21 in sequence. First, a first prestress is applied to the steel strand to stretch the steel strand to a certain length. Under the blocking effect of the top pressure component 2, the locking component 4 cannot move in the stretching direction of the steel strand. Then, the tensioning jack is unloaded to release the prestress of the steel strand. During the release of the prestress of the steel strand, the outer peripheries of the third reserved holes 31 formed in the locking component 4 are respectively clamped in the first clamping parts 8, thereby ensuring that the locking component 4 cannot move to the inside of the first reserved hole 11 of the anchor 1. When the prestress of the steel strand is about to be released to the locking value, the top pressure component 2 is pushed, and the locking component 4 is pushed by the top pressure component 2 to move toward the first reserved hole 11 in the anchor 1 until the outer peripheries of the third reserved holes 31 formed in the locking component 4 are completely separated from the first clamping parts 8, and the outer peripheries of the third reserved holes 31 formed by the locking component 4 are clamped in the second clamping part 81, and the locking component 4 enters the first reserved hole 11 and hugs the steel strand. The steel strand retracts and drives the locking component 4 to move completely into the first reserved hole 11 in the anchor 1 to complete the locking. It can ensure that the force on each steel strand is uniform, and it can also ensure that each locking component 4 can completely enter the first reserved hole 11 to hold the steel strand tightly. Moreover, it only takes one time to install the tensioning jack to measure whether the pull-out bearing capacity of the anchor rod meets the national standard, and to control the locking component 4 to complete precise locking when the steel strand is subjected to any prestress.

[0035] Furthermore, the locking component 4 is a truncated cone structure, and the end with a larger diameter of the locking component 4 is pressed against the top pressing component 2, the diameter of the larger end of the locking component 4 is larger than the second reserved hole 21, and the end with a smaller diameter extends to the inside of the first reserved hole 11. Each locking component 4 is provided with a fourth reserved hole 41 along its length direction, and the inner surface of each locking component 4 that surrounds the fourth reserved hole 41 is provided with bite teeth, and the outer surface of the steel strand 9 can slightly contact with the bite teeth of the fourth reserved hole 41. When the locking component 4 completely enters the first reserved hole 11 of the anchor 1, the locking component 4 can hold the steel strand tightly through the bite teeth.

[0036] Further, the blocking component 3 is provided with a plurality of third reserved holes 31, and the plurality of third reserved holes 31 correspond one to one with the plurality of first reserved holes 11 on the anchor 1. The outer periphery of each third reserved hole 31 enclosed by the blocking component 3 has a certain thickness, and the first groove has a certain width in the length direction of the locking component 4 itself. The thickness of the outer periphery of each third reserved hole 31 enclosed by the blocking component 3 is slightly smaller than the width of the first groove. The outer periphery of each third reserved hole 31 enclosed by the blocking component 3 and the first groove are in clearance fit. When the pressing component 2 is pushed to move toward the direction of the anchor 1, the pressing component 2 squeezes the locking component 4 to move toward the direction of the first reserved hole 11 of the anchor, which is conducive to the outer periphery of each third reserved hole 31 enclosed by the blocking component 3 to break away from the constraint of the first groove of the locking component 4. Under the squeezing action of the pressing component 2, each locking component 4 completely enters the first reserved hole 11 of the anchor 1. The outer periphery of each third reserved hole 31 enclosed by the blocking component 3 and the second groove clamped in the locking component 4 ensure that each locking component 4 is located in the same dimension, thereby improving the locking effect of the steel strand.

[0037] Furthermore, the blocking component 3 is an elastic material with a certain hardness, and is not easily damaged during the extrusion process. A plurality of third reserved holes 31 in the blocking component 3 are evenly distributed in a circular array around the center of the blocking component 3, and each third reserved hole 31 and the outer contour of the blocking component 3 are respectively provided with elastic seams 32 that are interconnected, which is conducive to the deformation of the third reserved holes 31 in the blocking component 3. The blocking component 3 can withstand a certain pressure. Under the extrusion of a certain force, each third reserved hole 31 opens and expands, and continuously deforms until the outer periphery of each third reserved hole 31 surrounded by the blocking component 3 is separated from the first groove of the locking component 4, and the outer periphery of each third reserved hole 31 surrounded by the blocking component 3 cooperates with the second groove of the locking component 4, and the locking component 4 completely enters the first reserved hole 11 of the anchor 1 to lock the steel strand.

[0038] In some optional embodiments, the blocking component 3 is evenly provided with a plurality of notches along its outer circumference, and a third reserved hole 31 is respectively provided on both sides of each notch. The blocking component 3 is easily deformed under a certain extrusion pressure.

[0039] In some optional embodiments, the tensioning and limiting device of the steel strand 9 further includes a pushing mechanism, which pushes the pressing component 2 to make the locking component 4 completely enter the first reserved hole 11 to complete the locking. The pressing component 2 is squeezed by the pushing mechanism, and the locking component 4 is pushed by the pressing component 2, so that the outer periphery of each third reserved hole 31 formed by the blocking component 3 is clamped in the first groove of the locking component 4. Under the pushing action of the locking component 4, each third reserved hole 31 is opened and expanded by the blocking component 3, and is continuously deformed until the outer periphery of each third reserved hole 31 formed by the blocking component 3 is separated from the first groove of the locking component 4, and the outer periphery of each third reserved hole 31 formed by the blocking component 3 cooperates with the second groove of the locking component 4, and the locking component 4 enters the first reserved hole 11 of the anchor 1 to lock the steel strand.

[0040] In some optional embodiments, the driving mechanism is a hydraulic control mechanism 6, which includes an outer shell 61, an inner shell 62, a piston 63 and a spring 64. The inner shell 62 is sleeved inside the outer shell 61, the piston 63 is arranged between the inner shell 62 and the outer shell 61, and the spring 64 is sleeved on the outer surface of the piston 63.

[0041] Specifically, the ends of the outer shell 61 and the inner shell 62 are detachably connected by bolts, and the end of the piston 63 is connected to the top pressure component 2 by bolts. An oil nozzle is provided at the end of the outer shell 61. When the steel strand 9 bearing a certain prestress releases the prestress to the expected value, hydraulic oil is released into the oil inlet nozzle 612, and the hydraulic oil pushes the piston 63 to compress the spring 64. The piston 63 moves toward the direction of the concrete component 5 or the steel component 51, and the piston 63 pushes the top pressure component 2 to move, and the top pressure component 2 pushes the locking component 4 to move. The locking component 4 continues to press the blocking component 3, and each third reserved hole 31 of the blocking component 3 will be deformed to a certain extent until the first groove of the locking component 4 is separated from the outer periphery of the blocking component 3, and the blocking component 4 surrounds the outer periphery of each third reserved hole 31 and the second groove clamped on the locking component 4, and each locking component 4 completely enters the first reserved hole 11 of the anchor 1 to lock the steel strand, ensuring that each locking component 4 is located in the same dimension, thereby improving the locking effect of the steel strand.

[0042] In some optional embodiments, a limiting component 7 is further included. The limiting component 7 is installed between the outer surface of the anchor structure 1 and the inner surface of the outer shell 61. The limiting component 7 is an annular limiting structure. The limiting component 7 is sleeved on the outer surface of the anchor 1 and is used to limit the hydraulic control mechanism 6, so as to prevent the hydraulic control mechanism 6 from moving downward due to its own gravity.

[0043] In some optional embodiments, a pad 10 is further included, which is tightly fitted to the concrete component 5 or the steel component 51. The end faces of the anchor 1, the limiting component 7 and the outer shell 61 close to the concrete structure 5 are pressed against the pad 10. The pad 10 is used to provide a relatively flat end face for the anchor 1, the limiting component 7 and the outer shell 61.

[0044] In some optional embodiments, the locking component 4 is provided with a fourth reserved hole 41 extending along the first direction, and the inner surface surrounding the fourth reserved hole 41 is provided with engaging teeth, so that the steel strand 9 can be in slight contact with the locking component 4, and the steel strand 9 and the locking component 4 have a certain friction force. When the steel strand 9 carrying a certain prestress releases the prestress to the expected value, the hydraulic control mechanism pushes the pressing component 2, and the pressing component 2 pushes the locking component 4 to move toward the direction of the anchor 1.

[0045] The present application provides a blocking component 3, which is the blocking component 3 mentioned in any position above, and is installed between the top pressure component 2 and the anchor 1, one end of which is tightly connected to the end surface of the anchor 1 facing away from the concrete, and is provided with a plurality of third reserved holes 31 extending along the first direction, and the third reserved holes 31 are arranged one-to-one with the first reserved holes 11.

[0046] The present application provides a hydraulic control mechanism 6, which is the hydraulic control mechanism 6 mentioned in any position above. The hydraulic control mechanism 6 includes an outer shell 61, an inner shell 62, a piston 63 and a spring 64. The inner shell 62 is sleeved inside the outer shell 61, the piston 63 is arranged between the inner shell 62 and the outer shell 61, and the spring 64 is sleeved on the outer surface of the piston 63.

[0047] The present application provides a method for tensioning and locking a steel strand, wherein an anchor 1, a blocking component 3, a locking component 4 and a pressing component 2 are installed at corresponding positions of a steel strand 9; the pressing component 2 is pushed so that the locking component 4 is completely moved to the anchor 1 to complete the locking.

[0048] Furthermore, after the steps of installing the anchor 1, the blocking component 3, the locking component 4 and the pressing component 2, the method further includes stretching the steel strand 9 to a first prestress by a tensioning jack.

[0049] Furthermore, after the step of stretching the steel strand 9 to the first prestress by the tensioning jack, the step further includes: releasing the stress of the steel strand 9 bearing the first prestress to a second prestress. Optionally, the first prestress is not less than the second prestress.

[0050] Furthermore, the step of pushing the pressing component 2 to make the locking component 4 move completely to the anchor 1 to complete the locking also includes: the steel strand 9 releases the stress to the second prestress, and the pressing component 2 is pushed by the hydraulic control mechanism 6 to make the locking component 4 move completely to the anchor 1 to complete the locking.

[0051] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A device for controllably locking a steel strand, characterized in that: include: An anchor, one end of which contacts the concrete member or the steel member, and is provided with a plurality of first reserved holes extending along a first direction; A pressing component is arranged corresponding to the end surface of the anchor facing away from the concrete member or the steel member, and the pressing component is provided with a plurality of second reserved holes extending along the first direction, and the second reserved holes are arranged one-to-one corresponding to the first reserved holes; A blocking component is installed between the pressing component and the anchor, and is provided with a plurality of third reserved holes extending along the first direction, wherein the third reserved holes are arranged in one-to-one correspondence with the first reserved holes; A plurality of locking components, one end of each locking component abuts against the end surface of the top pressing component close to the anchor, and the other end passes through the third reserved hole and extends to the first reserved hole, the locking component is provided with a first clamping portion extending around its own periphery, the blocking component surrounds the periphery of each of the third reserved holes and is clamped on the first clamping portion, the locking component is provided with a second clamping portion extending around its own periphery, the first clamping portion and the second clamping portion are arranged in parallel in the length direction of the locking component, the first clamping portion is a first groove, the second clamping portion is a second groove, and the first groove can cooperate with the peripheral clearance surrounding each of the third reserved holes; It also includes a pushing mechanism, which pushes the pressing component, and pushes the locking component toward the first reserved hole in the anchor through the pressing component, until the periphery of each of the third reserved holes surrounded by the blocking component is completely separated from each of the first clamping parts, and the periphery of each of the third reserved holes surrounded by the blocking component is clamped in the second clamping part.

2. The device for controllably locking a steel strand according to claim 1, characterized in that: The pushing mechanism is a hydraulic control mechanism, which includes an outer shell, an inner shell, a piston and a spring. The inner shell is sleeved inside the outer shell, the piston is arranged between the inner shell and the outer shell, and the spring is sleeved on the outer surface of the piston.

3. The device for controllably locking a steel strand according to claim 2, characterized in that: It also includes a limiting component, which is installed between the outer surface of the anchor and the inner surface of the shell.

4. The device for controllably locking a steel strand according to claim 1, characterized in that: The locking component is provided with a fourth reserved hole extending along the first direction, and the inner surface of the locking component surrounding the fourth reserved hole is provided with engaging teeth.

5. A method for controllably locking a steel strand, characterized in that: The method is realized by the device for controllably locking a steel strand according to any one of claims 1 to 4, comprising: Install anchors, blocking components, locking components and pressing components at corresponding positions of the steel strands; The pushing mechanism pushes the pressing component, and the locking component is pushed toward the first reserved hole in the anchor through the pressing component, until the periphery of each third reserved hole surrounded by the blocking component is completely separated from each first clamping part, and the periphery of each third reserved hole surrounded by the blocking component is clamped in the second clamping part.

6. The method for controllably locking a steel strand according to claim 5, characterized in that: After the steps of installing the anchor, the blocking component, the locking component and the pressing component, the method further includes stretching the steel strand to a first prestressing force by a tensioning jack.

7. The method for controllably locking a steel strand according to claim 6, characterized in that: After the step of stretching the steel strands to the first prestress by the tensioning jack, the method further includes: releasing the stress of the steel strands bearing the first prestress to the second prestress.

8. The method for controllably locking a steel strand according to claim 7, characterized in that: The pushing mechanism pushes the pressing component, and the locking component is pushed toward the first reserved hole in the anchor by the pressing component, until the periphery of each of the third reserved holes in the blocking component is completely separated from each of the first clamping parts, and the step of the periphery of each of the third reserved holes surrounded by the blocking component being clamped in the second clamping part also includes: when the steel strand releases stress to the second prestress, the pressing component is pushed by the hydraulic control mechanism to make the locking component completely move to the anchor to complete locking.

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