Hidden connection tensioner and guardrail thereof

Abstract

The utility model relates to the technical field of steel wire rope installation and fastening, in particular to a hidden connection tensioner and a guardrail thereof, which are characterized in that the hidden connection tensioner comprises a turnbuckle body, a turnbuckle screw and a turnbuckle nut, the turnbuckle nut is arranged on the turnbuckle body, the turnbuckle screw comprises an operation section and a threaded section, the turnbuckle screw is in threaded connection with the turnbuckle nut through the threaded section, and the turnbuckle nut is arranged on the turnbuckle body. The operation section is used for operating and driving the turnbuckle screw to rotate. According to the utility model, most of the structure of the hidden connection tensioner can be conveniently hidden in the stand column, and the cable can be tensioned from the single end of the stand column, so that continuous multi-section cable installation can be realized between a plurality of adjacent stand columns in sequence.

Description

Technical Field

[0001] The utility model relates to the technical field of steel wire rope installation and fastening, and in particular to a concealed connection tensioner and a guardrail thereof. Background Art

[0002] At present, various metal guard nets, retaining nets, etc. formed by connecting steel wire ropes between the columns on both sides are widely used because of their easy installation and good impact resistance to play a corresponding protective role. For such metal guard nets and retaining nets, during installation and construction, corresponding connecting tensioners are required to connect and tighten the steel wire ropes and apply a certain pre-tensioning force. However, the existing concealed connecting tensioners require two holes on the opposite sides of the column during installation, so it is impossible to continuously install multiple sections of steel wire ropes. During installation, only the connecting tensioners at the single-end holes of the column are used. Although continuous multi-section installation of steel wire ropes can be achieved, they are almost not concealed, and the overall appearance is not as good as the connecting tensioners with hidden functions. In view of this, this issue has been studied in depth, resulting in the present case. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a hidden connection tensioner and its guardrail, which are convenient for hiding most of the structure of the hidden connection tensioner in a column and can realize tensioning of cables from a single end of the column, so as to realize the installation of continuous multiple sections of cables between multiple adjacent columns in sequence.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a hidden connection tensioner, including a turnbuckle body, a turnbuckle screw and a turnbuckle nut, the turnbuckle nut is arranged on the turnbuckle body, the turnbuckle screw includes an operating section and a threaded section, the turnbuckle screw is threadedly connected to the turnbuckle nut through the threaded section, and the operating section is used to operate and drive the turnbuckle screw to rotate.

[0005] Furthermore, the turnbuckle screw is provided with threading holes running through both ends thereof, the outer surface of the threaded section is provided with external threads matching the turnbuckle nut, and the outer surface of the operating section is provided with two symmetrical operating planes.

[0006] Furthermore, it also includes a crimping sleeve and a gasket. The crimping sleeve is arranged on the side of the turnbuckle screw close to the threaded section. A crimping hole is arranged in the crimping sleeve. The outer diameter of the crimping sleeve is larger than the inner diameter of the threading hole. A through hole is arranged in the gasket. The gasket is arranged between the crimping sleeve and the turnbuckle screw.

[0007] Furthermore, the turnbuckle body is in the shape of a semicircular hollow tube and has a cavity formed therein, a strip-shaped notch is provided on the semicircular outer circumference of the turnbuckle body, and the turnbuckle nut is rotatably connected to the turnbuckle body in a separable manner.

[0008] Furthermore, two symmetrical convex shafts are fixed on the outer surface of the turnbuckle nut, and two symmetrical grooves are provided on both sides of the strip groove on the turnbuckle main body. The two convex shafts correspond to the two grooves one by one, and the convex shafts are detachable and rotatable in the corresponding grooves. The convex shafts are arranged on the outer surface of the turnbuckle nut at one end face close to the turnbuckle nut, and the distances between the grooves and the end faces at both ends of the turnbuckle main body are inconsistent.

[0009] Furthermore, the groove includes a circular rotating hole and a square entrance which are connected to each other, the convex shaft is in the shape of a square column, and the width of the convex shaft is matched with the width of the square entrance.

[0010] Furthermore, a first beveled surface and a second beveled surface are provided on the strip edges on both sides of the cavity of the turnbuckle body. The first beveled surface and the second beveled surface are respectively provided at two ends of the strip edge and have opposite inclination directions.

[0011] Furthermore, a first step block is fixedly provided on the second beveled surface, a first step surface coplanar with the first beveled surface is provided on the first step block, a second step block is fixedly provided on the first beveled surface, a second step surface coplanar with the second beveled surface is provided on the second step block, the first beveled surface and the first step block are respectively provided on both sides of the groove, the second beveled surface and the second step block are respectively provided on both sides of the groove, the junction of the first beveled surface and the second beveled surface corresponds to the groove, and a first clamping block is fixedly provided on the strip edge of the flower basket body at the junction of the first beveled surface and the second beveled surface.

[0012] Furthermore, flat cut surfaces are provided on the strip edges on both sides of the cavity of the turnbuckle body, and a second clamping block is fixedly provided on the flat cut surface between one end thereof and the groove.

[0013] A guardrail comprises a cable, at least two posts and at least one hidden connection tensioner as described above, at least one mounting hole is provided on both side end faces of the post, at least one end of the cable is connected to the corresponding hidden connection tensioner, the hidden connection tensioner passes through the mounting hole of the post on the corresponding side and is installed in the post to tighten the cable.

[0014] From the above description, it can be seen that the hidden connection tensioner and guardrail provided by the utility model have the following beneficial effects:

[0015] First, when in use, the turnbuckle body can be inserted from the mounting hole at one end of the column and abut against the inner surface of the column, and one end of the turnbuckle screw rod can be passed through the mounting hole, and the turnbuckle nut and the crimping sleeve are both located inside the column. In this way, it is convenient to hide most of the structures of the turnbuckle body, turnbuckle nut, crimping sleeve and turnbuckle screw rod inside the column, so as to ensure the overall aesthetic appearance of the concealed connection tensioner when in use;

[0016] Secondly, with the use of the crimping sleeve, it is convenient to crimp the cable, thereby achieving a fixed connection with the cable. Therefore, when the turnbuckle screw is rotated and moved toward the crimping sleeve relative to the turnbuckle nut, the crimping sleeve can be pushed to move together, thereby having a corresponding tightening effect on the cable, and the cable can be tightened from a single end of the column, so that continuous installation of multiple sections of cables can be achieved between multiple adjacent columns in turn, and its installation and disassembly are simple.

[0017] Third, the turnbuckle nut is rotatably connected to the turnbuckle body, and the turnbuckle screw can rotate along with the turnbuckle nut to achieve different upward or downward tilt angles. This not only allows the cable to be tightened between two columns on a horizontal plane, but also allows the cable to be tightened between two columns on a slope. The hidden connection tensioner can be used in conjunction with different cable fixers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the exploded three-dimensional structure of a hidden connection tensioner in the first embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the turnbuckle body in the first embodiment of the utility model.

[0020] Figure 3 The present invention is a schematic diagram of a hidden connection tensioner in the first embodiment of the present invention when it is inserted into the mounting hole of a column.

[0021] Figure 4 This is a schematic diagram of one installation state of a guardrail in Embodiment 1 of the present utility model.

[0022] Figure 5 This is a schematic diagram of another installation state of a guardrail in Embodiment 1 of the utility model.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the turnbuckle body in the second embodiment of the present utility model.

[0024] Figure 7 This is a schematic diagram of one installation state of a guardrail in Embodiment 2 of the present utility model.

[0025] Figure 8 This is a schematic diagram of another installation state of a guardrail in Embodiment 2 of the present utility model.

[0026] In the figure: 1- turnbuckle body; 11- cavity; 12- strip notch; 13- groove; 131- circular rotating hole; 132- square entrance; 14- first beveled surface; 15- second beveled surface; 16- first step block; 161- first step surface; 17- second step block; 171- second step surface; 18- first clamping block; 191- flat surface; 192- second clamping block; 2- turnbuckle nut; 21- convex shaft; 3- turnbuckle screw; 31- threading hole; 32- operating section; 33- threaded section; 34- operating plane; 4- crimping sleeve; 41- crimping hole; 5- gasket; 6- column; 61- mounting hole; 7- cable; 8- cable holder. DETAILED DESCRIPTION

[0027] The present invention is further described below through specific implementation methods.

[0028] Embodiment 1

[0029] like Figures 1 to 5 As shown, a hidden connection tensioner described in the utility model includes a turnbuckle body 1, a turnbuckle screw 3, a turnbuckle nut 2, a crimping sleeve 4 and a gasket 5.

[0030] The turnbuckle nut 2 is arranged on the turnbuckle body 1, and the turnbuckle screw 3 is provided with threading holes 31 running through both ends thereof, and the cable 7 can pass through the threading holes 31. The turnbuckle screw 3 includes an operating section 32 and a threaded section 33. Preferably, the length of the threaded section 33 is greater than the length of the operating section 32. In addition, the turnbuckle screw 3 can be set to different lengths according to the size of the turnbuckle body 1. The outer surface of the threaded section 33 is provided with an external thread that matches the turnbuckle nut 2. As a result, the turnbuckle screw 3 can be rotated to move relative to the turnbuckle nut 2. The turnbuckle screw 3 is threadedly connected to the turnbuckle nut 2 through the threaded section 33. The operating section 32 is used to operate and drive the turnbuckle screw 3 to rotate. Two symmetrical operating planes 34 are provided on the outer surface of the operating section 32. The two operating planes 34 can be clamped in conjunction with a clamping tool to facilitate the rotation of the turnbuckle screw 3.

[0031] The crimping sleeve 4 is arranged on the side of the turnbuckle screw 3 close to the threaded section 33, and a crimping hole 41 is arranged in the crimping sleeve 4, so that one end of the cable 7 can be inserted into the crimping hole 41, and the crimping sleeve 4 can be conveniently crimped and fixed on the cable 7 by crimping the outer surface of the crimping sleeve 4. Preferably, the crimping sleeve 4 can be made of aluminum, steel or other metal materials. In addition, the outer diameter of the crimping sleeve 4 is larger than the inner diameter of the threading hole 31. When in use, the turnbuckle screw 3 can abut against the crimping sleeve 4 and support the crimping sleeve 4, whereby, when the turnbuckle screw 3 is rotated and moved toward the crimping sleeve 4 relative to the turnbuckle nut 2, the crimping sleeve 4 can be pushed to move together, thereby exerting a corresponding tightening effect on the cable 7. In addition, in other embodiments, when the crimping sleeve 4 is not used, the outer surface of the operating section 32 of the turnbuckle screw 3 can also be crimped to fix the turnbuckle screw 3 and the cable 7.

[0032] The gasket 5 is provided with a through hole, and the cable 7 can pass through the through hole. The gasket 5 is arranged between the crimping sleeve 4 and the turnbuckle screw 3. Preferably, the gasket 5 is a metal sheet, which can effectively reduce the friction between the crimping sleeve 4 and the turnbuckle screw 3 when the turnbuckle screw 3 is rotated.

[0033] The turnbuckle body 1 is in the shape of a semicircular hollow tube and is formed with a cavity 11, so that the shape of the turnbuckle body 1 is better adapted to the mounting hole 61. A strip notch 12 is provided on the semicircular outer circumference of the turnbuckle body 1. Specifically, the turnbuckle nut 2 is detachably connected to the turnbuckle body 1. When the hidden connection tensioner needs to be inserted from the mounting hole 61 of the column 6, the turnbuckle nut 2 can be rotated first, so that the turnbuckle screw 3 and the turnbuckle nut 2 are both in the cavity 11, and the turnbuckle screw 3 and the turnbuckle nut 2 are both aligned with the central axis of the turnbuckle body 1. It is close to overlapping to facilitate insertion from the mounting hole 61. In addition, through the setting of the strip groove 12, the turnbuckle nut 2 and the turnbuckle screw 3 can be avoided to avoid interference with the rotation of the turnbuckle screw 3 and the turnbuckle nut 2. In addition, through the rotation connection between the turnbuckle nut 2 and the turnbuckle body 1, the turnbuckle screw 3 can rotate with the turnbuckle nut 2 to achieve different angles of inclination upward or downward, so that not only can the cable 7 be tightened between the two columns 6 on the horizontal plane, but also the cable 7 can be tightened between the two columns 6 on the slope.

[0034] Correspondingly, two symmetrical protrusions 21 are fixed on the outer surface of the turnbuckle nut 2, and two symmetrical grooves 13 are provided on the turnbuckle main body 1 on both sides of the strip groove 12. The two protrusions 21 correspond to the two grooves 13 one by one, and the protrusions 21 are detachably and rotatably arranged in the corresponding grooves 13, thereby facilitating the detachable rotatable connection between the turnbuckle nut 2 and the turnbuckle main body 1.

[0035] In addition, the convex shaft 21 is arranged on the outer surface of the turnbuckle nut 2 at an end face close to the turnbuckle nut 2. When the turnbuckle nut 2 is assembled with the turnbuckle body 1, if the turnbuckle nut 2 is assembled with the end without the convex shaft 21 facing the turnbuckle body 1, before the convex shaft 21 is inserted into the groove 13, this end portion of the turnbuckle nut 2 will interfere with the turnbuckle body 1 and cannot be assembled. Only when the turnbuckle nut 2 is assembled with the end with the convex shaft 21 facing the turnbuckle body 1 can it be assembled smoothly, thereby effectively ensuring the correct assembly between the turnbuckle nut 2 and the turnbuckle body 1.

[0036] In addition, the distance between the groove 13 and the two end surfaces of the turnbuckle body 1 is inconsistent, thereby making the weight of the two ends of the turnbuckle body 1 relative to the groove 13 inconsistent. In this way, when the turnbuckle body 1 needs to be inserted from the mounting hole 61, the end of the turnbuckle body 1 that is longer than the groove 13 is first aligned with the mounting hole 61. After the turnbuckle body 1 passes through the mounting hole 61 and completely enters the column 6, the turnbuckle body 1 can automatically rotate from horizontal to vertical.

[0037] Correspondingly, the groove 13 includes a circular rotating hole 131 and a square entrance 132 that are connected. The convex shaft 21 is in the shape of a square column. The width of the convex shaft 21 is matched with the width of the square entrance 132. In this way, the convex shaft 21 is allowed to rotate in the circular rotating hole 131, and the convex shaft 21 is allowed to enter the circular rotating hole 131 through the square entrance 132. At the same time, when the convex shaft 21 rotates an appropriate angle, since the diagonal length of the convex shaft 21 is greater than the width of the square entrance 132, the convex shaft 21 can be effectively prevented from escaping from the circular rotating hole 131.

[0038] The turnbuckle body 1 is provided with a first chamfer 14 and a second chamfer 15 on the strip edges on both sides of the cavity 11. The first chamfer 14 and the second chamfer 15 are respectively provided at the two ends of the strip edge and have opposite inclination directions. A first step block 16 is fixedly provided on the second chamfer 15. A first step surface 161 coplanar with the first chamfer 14 is provided on the first step block 16. A second step block 17 is fixedly provided on the first chamfer 14. A second step surface 171 coplanar with the second chamfer 15 is provided on the second step block 17. The first chamfer 14 and the first step block 16 are respectively provided on both sides of the groove 13. The second chamfer 15 and the second step block 17 are respectively provided on both sides of the groove 13. The first chamfer 14 The junction with the second beveled surface 15 corresponds to the groove 13. In addition, a first clamping block 18 is fixedly provided on the strip edge of the flower basket main body 1 at the junction of the first beveled surface 14 and the second beveled surface 15. When the first beveled surface 14 and the first step surface 161 are close to abutting against the inner surface of the column 6, and the second step block 17 and the first clamping block 18 are clamped in the mounting hole 61 of the column 6, the flower basket main body 1 can be stably in the first inclined position. When the second beveled surface 15 and the second step surface 171 are close to abutting against the inner surface of the column 6, and the first step block 16 and the first clamping block 18 are clamped in the mounting hole 61 of the column 6, the flower basket main body 1 can be stably in the second inclined position.

[0039] Correspondingly, the inclination angles of the first beveled surface 14 and the second beveled surface 15 can be processed and set according to actual installation needs. Preferably, the inclination angles of the first beveled surface 14 and the second beveled surface 15 are 0-40 degrees. In this way, an installation angle of about ±40° can be achieved, that is, multi-angle adjustment of the cable 7 can be achieved, and it can be better suitable for installation in stair scenes. At the same time, the hidden connection tensioner can be used in the mounting holes 61 at the high and low positions of the column 6, and will not interfere with the inner wall of the mounting hole 61 after installation.

[0040] Preferably, the cable 7 is a steel wire rope or a cable made of other materials.

[0041] A guardrail comprises a cable 7, at least two posts 6 and at least one hidden connection tensioner as described in any one of the above items, at least one mounting hole 61 is provided on both side end faces of the post 6, at least one end of the cable 7 is connected to the corresponding hidden connection tensioner, the hidden connection tensioner passes through the mounting hole 61 of the post 6 on the corresponding side and is installed in the post 6 and tensions the cable 7.

[0042] In this embodiment, there are two hidden connection tensioners, and both ends of the cable 7 are respectively connected to the corresponding hidden connection tensioners. In other embodiments, there may be one hidden connection tensioner, and one end of the cable 7 is connected to the hidden connection tensioner to adjust the tension of the cable 7 from one end, and the other end of the cable 7 can be connected to a cable holder 8, which is only used to connect and fix the other end of the cable 7, and can adopt the structure in the prior art, so that the hidden connection tensioner can be used in conjunction with different cable holders 8.

[0043] When in use, the turnbuckle body 1 can be inserted from the mounting hole 61 at one end of the column 6 and abut against the inner surface of the column 6, and one end of the turnbuckle screw 3 is passed through the mounting hole 61, and the turnbuckle nut 2 and the crimping sleeve 4 are both located in the column 6. In this way, it is convenient to hide most of the structures of the turnbuckle body 1, the turnbuckle nut 2, the crimping sleeve 4 and the turnbuckle screw 3 in the column 6 to ensure the overall appearance of the concealed connection tensioner when in use. In addition, in conjunction with the The use of the crimping sleeve 4 makes it easy to crimp the cable 7, thereby achieving a fixed connection with the cable 7. Therefore, when the turnbuckle screw 3 is rotated and moved toward the crimping sleeve 4 relative to the turnbuckle nut 2, the crimping sleeve 4 can be pushed to move together, thereby having a corresponding tightening effect on the cable 7, and the cable 7 can be tightened from a single end of the column 6, so that the installation of multiple sections of the cable 7 can be achieved between multiple adjacent two columns 6 in turn, and its installation and disassembly are simple.

[0044] The method of using the hidden connection tensioner and the guardrail described in the utility model is as follows:

[0045] First, the turnbuckle screw 3 is threadedly connected to the turnbuckle nut 2 through its threaded section 33;

[0046] Then, the two protruding shafts 21 of the turnbuckle nut 2 are respectively inserted into the two grooves 13 of the turnbuckle body 1;

[0047] Then, the free end of the cable 7 is passed through the threading hole 31 of the turnbuckle screw 3, the through hole of the gasket 5 and the crimping hole 41 of the crimping sleeve 4 in sequence, and then a corresponding pressurizing tool, such as a hydraulic pliers, is used to apply pressure on the outer surface of the crimping sleeve 4, so that the end of the cable 7 is clamped by the inner side wall of the crimping sleeve 4, and finally a fixed crimping between the cable 7 and the crimping sleeve 4 is achieved;

[0048] The turnbuckle screw 3 is rotated so that the turnbuckle screw 3, the gasket 5 and the crimping sleeve 4 are all in the cavity 11 of the turnbuckle body 1, and the central axes of the four are nearly coincident;

[0049] Align the ends of the turnbuckle bodies 1 of the two hidden connection tensioners that are at a longer distance from the grooves 13 with the corresponding mounting holes 61 of the columns 6 on both sides, and completely insert the turnbuckle bodies 1 into the columns 6 from the mounting holes 61. Then, due to the different weights at the two ends of the turnbuckle bodies 1 relative to the grooves 13, they can automatically rotate and rotate from horizontal to vertical. At this time, the first chamfered surface 14 and the first step surface 161 of the turnbuckle bodies 1 of one of the hidden connection tensioners are close to abutting against the inner surface of one of the columns 6, and the first clamping block 18 and the second step block 17 on the turnbuckle body 1 are clamped into the mounting hole 61 of one of the columns 6 to ensure that the turnbuckle body 1 is stably in the first inclined position, and the second chamfered surface 15 and the second step surface 171 of the turnbuckle body 1 of the other hidden connection tensioner are close to abutting against the inner surface of the other column 6, and the first clamping block 18 and the first step block 16 on the turnbuckle body 1 are clamped into the mounting hole 61 of the other column 6 to ensure that the turnbuckle body 1 is stably in the second inclined position;

[0050] The two operating planes 34 on the operating section 32 of the turnbuckle screw 3 are clamped by a clamping tool, and the turnbuckle screw 3 is driven to rotate by the clamping tool, and the turnbuckle screw 3 is screwed into the column 6 as much as possible, and finally both ends of the cable 7 are in a taut state, thereby completing the assembly of the guardrail.

[0051] Embodiment 2

[0052] like Figures 6 to 8 As shown, the difference between this embodiment and the first embodiment lies in that: the turnbuckle main body 1 is provided with a flat cut surface 191 on the strip edges on both sides of the cavity 11, and a second clamping block 192 is fixedly provided on the flat cut surface 191 between one end thereof and the groove 13. When the second clamping block 192 is clamped in the mounting hole 61 of the column 6 and the flat cut surface 191 is close to abutting against the inner surface of the column 6, the turnbuckle main body 1 can be stably placed in the corresponding mounting position. In this embodiment, the length of the turnbuckle main body 1 can be made shorter to reduce costs, so that the cable 7 can be installed horizontally or tilted to one side.

[0053] Other technical features are the same as those in Embodiment 1.

[0054] A guardrail comprises a cable 7, at least two posts 6 and at least one hidden connection tensioner as described in any one of the above items, at least one mounting hole 61 is provided on both side end faces of the post 6, at least one end of the cable 7 is connected to the corresponding hidden connection tensioner, the hidden connection tensioner passes through the mounting hole 61 of the post 6 on the corresponding side and is installed in the post 6 and tensions the cable 7.

[0055] In this embodiment, there are two hidden connection tensioners, and both ends of the cable 7 are respectively connected to the corresponding hidden connection tensioners. In other embodiments, there may be one hidden connection tensioner, and one end of the cable 7 is connected to the hidden connection tensioner to adjust the tension of the cable 7 from one end, and the other end of the cable 7 can be connected to a cable holder 8, which is only used to connect and fix the other end of the cable 7, and can adopt the structure in the prior art, so that the hidden connection tensioner can be used in conjunction with different cable holders 8.

[0056] The method of using the hidden connection tensioner and the guardrail described in the utility model is as follows:

[0057] First, the turnbuckle screw 3 is threadedly connected to the turnbuckle nut 2 through its threaded section 33;

[0058] Then, the two protruding shafts 21 of the turnbuckle nut 2 are respectively inserted into the two grooves 13 of the turnbuckle body 1;

[0059] Then, the free end of the cable 7 is passed through the threading hole 31 of the turnbuckle screw 3, the through hole of the gasket 5 and the crimping hole 41 of the crimping sleeve 4 in sequence, and then a corresponding pressurizing tool, such as a hydraulic pliers, is used to apply pressure on the outer surface of the crimping sleeve 4, so that the end of the cable 7 is clamped by the inner side wall of the crimping sleeve 4, and finally a fixed crimping between the cable 7 and the crimping sleeve 4 is achieved;

[0060] The turnbuckle screw 3 is rotated so that the turnbuckle screw 3, the gasket 5 and the crimping sleeve 4 are all in the cavity 11 of the turnbuckle body 1, and the central axes of the four are nearly coincident;

[0061] Align the ends of the turnbuckle bodies 1 of the two hidden connection tensioners that are longer than the grooves 13 with the corresponding mounting holes 61 of the two side posts 6, and completely insert the turnbuckle bodies 1 into the posts 6 from the mounting holes 61. Then, due to the different weights at the two ends of the turnbuckle bodies 1 relative to the grooves 13, the turnbuckle bodies 1 can automatically rotate and rotate from the horizontal direction to the vertical direction. At this time, the flat cut surface 191 of the turnbuckle body 1 of the hidden connection tensioner is close to abutting against the inner surface of the post 6, and the second clamping block 192 on the turnbuckle body 1 is clamped in the mounting hole 61 of the post 6 to ensure that the turnbuckle body 1 is stably in the corresponding installation position.

[0062] The two operating planes 34 on the operating section 32 of the turnbuckle screw 3 are clamped by a clamping tool, and the turnbuckle screw 3 is driven to rotate by the clamping tool, and the turnbuckle screw 3 is screwed into the column 6 as much as possible, and finally both ends of the cable 7 are in a taut state, thereby completing the assembly of the guardrail.

[0063] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made and that such a development effort may be complex and time-consuming, but will be a routine task of design, manufacturing, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0064] The above are only some specific implementation methods of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A hidden connection tensioner, characterized in that: It includes a turnbuckle body, a turnbuckle screw and a turnbuckle nut, wherein the turnbuckle nut is arranged on the turnbuckle body, the turnbuckle screw includes an operating section and a threaded section, the turnbuckle screw is threadedly connected to the turnbuckle nut through the threaded section, the operating section is used to operate and drive the turnbuckle screw to rotate, the turnbuckle body is in a semicircular hollow tubular shape and has a cavity, a strip notch is provided on the semicircular outer circumference of the turnbuckle body, and the turnbuckle nut is detachably connected to the turnbuckle body.

2. A hidden connection tensioner according to claim 1, characterized in that: The turnbuckle screw is provided with threading holes penetrating through both ends thereof, the outer surface of the threaded section is provided with external threads matched with the turnbuckle nut, and the outer surface of the operating section is provided with two symmetrical operating planes.

3. A hidden connection tensioner according to claim 2, characterized in that: It also includes a crimping sleeve and a gasket. The crimping sleeve is arranged on the side of the turnbuckle screw close to the threaded section. The crimping sleeve is provided with a crimping hole. The outer diameter of the crimping sleeve is larger than the inner diameter of the threading hole. The gasket is provided with a through hole. The gasket is arranged between the crimping sleeve and the turnbuckle screw.

4. A concealed connection tensioner according to claim 1, characterized in that: Two symmetrical convex shafts are fixed on the outer surface of the turnbuckle nut, and two symmetrical grooves are provided on the turnbuckle main body on both sides of the strip-shaped groove. The two convex shafts correspond to the two grooves one by one, and the convex shafts are detachably and rotatably arranged in the corresponding grooves. The convex shafts are arranged on the outer surface of the turnbuckle nut at an end face close to the turnbuckle nut, and the distances between the grooves and the end faces at both ends of the turnbuckle main body are inconsistent.

5. A hidden connection tensioner according to claim 4, characterized in that: The groove comprises a circular rotating hole and a square entrance which are connected to each other. The convex shaft is in the shape of a square column. The width of the convex shaft is matched with the width of the square entrance.

6. A hidden connection tensioner according to claim 4, characterized in that: The turnbuckle body is provided with a first chamfered surface and a second chamfered surface on the strip edges at both sides of the cavity. The first chamfered surface and the second chamfered surface are respectively provided at two ends of the strip edge and have opposite inclination directions.

7. A hidden connection tensioner according to claim 6, characterized in that: A first step block is fixedly provided on the second beveled surface, a first step surface coplanar with the first beveled surface is provided on the first step block, a second step block is fixedly provided on the first beveled surface, a second step surface coplanar with the second beveled surface is provided on the second step block, the first beveled surface and the first step block are respectively provided on both sides of the groove, the second beveled surface and the second step block are respectively provided on both sides of the groove, the junction of the first beveled surface and the second beveled surface corresponds to the groove, and a first clamping block is fixedly provided on the strip edge of the turnbuckle body at the junction of the first beveled surface and the second beveled surface.

8. A hidden connection tensioner according to claim 4, characterized in that: The turnbuckle main body is provided with flat cut surfaces on the strip edges on both sides of the cavity, and a second clamping block is fixedly provided between one end of the flat cut surface and the groove.

9. A guardrail, characterized in that: It comprises a cable, at least two columns and at least one hidden connection tensioner as described in any one of claims 1 to 8, at least one mounting hole is provided on both side end faces of the column, at least one end of the cable is connected to the corresponding hidden connection tensioner, and the hidden connection tensioner passes through the mounting hole of the column on the corresponding side and is installed in the column to tighten the cable.

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