Flexible guide rail adjustable fitting

Abstract

The utility model belongs to the technical field of flexible guide rail falling protectors, and discloses a flexible guide rail adjustable fitting which is connected to the end of a flexible guide rail and comprises a U-shaped bolt body, a pull plate, a first lock nut and a lock head assembly, the elbow portion of the U-shaped bolt body is connected to a fixing point of the guide rail in a penetrating mode, and the two straight rod portions of the U-shaped bolt body are arranged to be screw rod sections; a through hole is formed in the position, corresponding to the screw rod section, of the pulling plate, and the pulling plate is connected with the opening end of the U-shaped bolt body in a penetrating mode and blocks the opening end of the U-shaped bolt body and is in threaded connection with the screw rod section through the first lock nut for bottom face limiting; a penetrating connection hole is formed in the middle of the pulling plate, and the end of the flexible guide rail penetrates through the penetrating connection hole and then is locked by the lock head assembly. The tensioning degree of the flexible guide rail can be conveniently and flexibly adjusted, the connecting strength is high, and the safety is good.

Description

Technical Field

[0001] This utility model relates to the field of flexible guide rail fall arrestor technology, and in particular to an adjustable flexible guide rail fitting. Background Technology

[0002] In the construction and maintenance of power transmission and distribution lines and wind turbines, workers often need to climb ladders or equipment structures. Fall arresters, connected to safety ropes, are used for climbing. When a worker loses their balance, their weight quickly locks the fall arrester onto the guide rail, preventing accidents. Existing fall arresters use either steel guide rails or flexible guide rails. Steel guide rails are non-bending and offer good stability, while flexible guide rails are more flexible in layout and easier to use. Currently, flexible guide rails mainly refer to steel strand and wire rope guide rails.

[0003] During the installation of flexible guide rails, locking rings, shackles, and other hardware are often used for fixation. However, these conventional hardware cannot adjust the tension of the flexible guide rail, thus requiring improvement. Utility model patent CN220676565U discloses a high-altitude fall arrest device. This patent's technical solution uses an adjustable distance component connected to the upper and lower ends of the flexible guide rail (i.e., the steel wire rope). Under the telescopic adjustment of the adjustable distance component, the guide rail is pulled to a straight state. The adjustable distance component includes two U-shaped connecting steel plates, with their U-shaped bottoms abutting each other. Holes for bolts to slide through are provided on both abutting surfaces. A spring is fitted around the bolt inside one of the connecting steel plates, and nuts are threaded to both ends of the bolt, directly or indirectly abutting against the elastic component. This patent's technical solution uses a spring tensioning method to tighten the steel wire rope, resulting in low connection strength, complex structure, and poor impact resistance at the pin shaft.

[0004] Therefore, it is necessary to develop a flexible adjustable guide rail fitting to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable hardware for flexible guide rails, which facilitates flexible adjustment of the tension of the flexible guide rails, and provides high connection strength and good safety.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model relates to an adjustable fitting for a flexible guide rail, connected to the end of a flexible guide rail. It includes a U-shaped bolt body, a pull plate, a lock nut, and a lock head assembly. The bent portion of the U-shaped bolt body is connected to a fixed point on the guide rail. The two straight sections of the U-shaped bolt body are configured as screw sections. The pull plate has a through hole at the corresponding position of the screw section. The pull plate passes through and seals the open end of the U-shaped bolt body and is threadedly connected to the screw section by the lock nut for bottom-level positioning. A through hole is provided in the middle of the pull plate, through which the end of the flexible guide rail passes and is locked by the lock head assembly.

[0008] Furthermore, the U-bolt body, pull plate, and lock nut are all galvanized steel parts, and the lock nut is an anti-loosening nut.

[0009] Furthermore, the lock assembly includes a second lock nut, a hollow screw, and a retaining sleeve arranged coaxially. The flexible guide rail passes through the through hole and then coaxially passes through the threaded hole of the second lock nut and the center hole of the hollow screw. The bottom surface of the second lock nut abuts against the top surface of the pull plate. The hollow screw is threadedly connected to the top port of the second lock nut. The bottom end face of the hollow screw pushes against the retaining sleeve, and the retaining sleeve clamps the flexible guide rail.

[0010] Furthermore, the sleeve is a thin-walled metal sleeve in the shape of a conical ring, the bottom end of the hollow screw pushes against the large end of the sleeve, and a slanted slit is provided on the side wall of the sleeve.

[0011] Furthermore, the fit clearance between the central hole and the outer diameter of the flexible guide rail is no more than 1 mm.

[0012] Furthermore, the specification of the first lock nut is not less than M16, and the thickness of the pull plate is not less than 12 mm.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] This utility model features an adjustable flexible guide rail fitting using a U-shaped bolt body for easy and quick connection to a fixed point. The locking head assembly secures the flexible guide rail end through the through-hole, thus limiting and fixing the end of the flexible guide rail relative to the pull plate. The position of the pull plate is adjusted by controlling the installation position of the locking nut on the screw section, thereby adjusting the tension of the flexible guide rail. This utility model's adjustable flexible guide rail fitting allows for flexible adjustment of the flexible guide rail tension, provides high connection strength, and offers good safety.

[0015] Furthermore, by selecting key components for galvanized protection, corrosion resistance is improved and service life is extended. The appropriate selection of the specifications for the lock nut and pull plate ensures sufficient tensile strength and guarantees safety. The hollow screw pushes against the ferrule, clamping the flexible guide rail and locking it. This wrap-around clamping connection offers high strength and flexible control over the locking position. Moreover, controlling the degree to which the hollow screw is screwed into the top of the lock nut allows for control over the clamping degree. The ferrule, a thin-walled metal sleeve in the shape of a conical ring, utilizes the pressure of its outer conical surface to achieve a wrap-around clamping effect on the flexible guide rail. The beveled slit ensures sufficient elastic deformation during clamping and facilitates disassembly and repeated use. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the flexible guide rail adjustable fitting of this utility model in application state;

[0018] Figure 2 This is a three-dimensional structural diagram of the adjustable flexible guide rail fitting of this utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of the adjustable flexible guide rail fitting of this utility model;

[0020] Figure 4 This is a schematic diagram of the main cross-sectional structure of the adjustable flexible guide rail fitting of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the hollow screw in this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the card sleeve in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. U-bolt body; 101. Screw section; 2. Pull plate; 201. Through hole; 202. Through hole; 3. Lock nut one; 4. Lock nut two; 5. Hollow screw; 501. Center hole; 6. Sleeve; 601. Bevel cut; 7. Fixing component; 8. Flexible guide rail. Detailed Implementation

[0024] The core of this utility model is to provide an adjustable hardware for flexible guide rails, which facilitates flexible adjustment of the tension of the flexible guide rails, and has high connection strength and good safety.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Refer to the attached diagram. Figure 1 This is a three-dimensional structural diagram of the flexible guide rail adjustable fitting of this utility model in application state; Figure 2 This is a three-dimensional structural diagram of the adjustable flexible guide rail fitting of this utility model; Figure 3 This is a schematic diagram of the main structure of the adjustable flexible guide rail fitting of this utility model; Figure 4 This is a schematic diagram of the main cross-sectional structure of the adjustable flexible guide rail fitting of this utility model; Figure 5 This is a three-dimensional structural diagram of the hollow screw in this utility model; Figure 6 This is a three-dimensional structural diagram of the card sleeve in this utility model.

[0028] In one specific implementation, such as Figure 1 As shown, the adjustable fittings of the flexible guide rail of this utility model are connected between the end of the flexible guide rail 8 and the fixing component 7. The fixing component 7 is fixedly connected to the iron tower or tower cylinder that needs to be climbed. Figure 1 The fixing component 7 shown is fixed to the angle steel profile using a double clamp method.

[0029] In one specific implementation, such as Figures 1-4 As shown, the adjustable flexible guide rail fitting of this utility model includes a U-bolt body 1, a pull plate 2, a lock nut 3, and a lock head assembly. The bent part of the U-bolt body 1 passes through the mounting hole of the fixing assembly 7, and the two straight rod sections of the U-bolt body 1 are set as screw sections 101. The pull plate 2 has through holes 201 at the corresponding positions of the screw sections 101, and the number of through holes 201 is two, corresponding one-to-one with the screw sections 101. The pull plate 2 passes through and seals the open end of the U-bolt body 1 and is threadedly connected to the screw section 101 by the lock nut 3 for bottom surface limitation. A through hole 202 is opened in the middle of the pull plate 2, and the end of the flexible guide rail 8 passes through the through hole 202 and is locked by the lock head assembly.

[0030] Specifically, such as Figure 2 As shown, two through holes 201 and a through hole 202 are centrally located on the pull plate 2, with the through hole 202 positioned in the exact center. The flexible guide rail 8 can be a steel wire rope or steel strand, and the fall arrestor slides on the flexible guide rail 8.

[0031] The use of a U-shaped bolt body 1 facilitates quick connection to a fixed point; the locking head assembly locks the end of the flexible guide rail 8 through the through hole 202, thus limiting and fixing the end of the flexible guide rail 8 relative to the pull plate 2; the position of the pull plate 2 is adjusted by controlling the installation position of the lock nut 3 on the screw section 101, thereby adjusting the tension of the flexible guide rail 8. This utility model features an adjustable flexible guide rail fitting, facilitating flexible adjustment of the tension of the flexible guide rail, providing high connection strength and good safety.

[0032] Specifically, such as Figures 1-4 As shown, the U-bolt body 1, pull plate 2, and lock nut 3 are all galvanized steel parts, and lock nut 3 is an anti-loosening nut.

[0033] Specifically, such as Figures 1-4 As shown, the specification of lock nut 3 is not less than M16, and the thickness of pull plate 2 is not less than 12 mm.

[0034] By selecting key components for galvanized protection, corrosion resistance was improved and service life was extended; by rationally selecting the specifications of lock nut 3 and pull plate 2, sufficient tensile strength was ensured and safety performance was guaranteed.

[0035] In one specific embodiment of this utility model, such as Figures 2-6 As shown, the lock assembly includes a second lock nut 4, a hollow screw 5, and a retaining sleeve 6, all coaxially arranged. The flexible guide rail 8 passes through the through hole 202 and then coaxially through the threaded hole of the second lock nut 4 and the central hole 501 of the hollow screw 5. The central hole 501 is a smooth hole. The bottom surface of the second lock nut 4 abuts against the top surface of the pull plate 2. The hollow screw 5 is threaded onto the top port of the second lock nut 4, and the bottom end of the hollow screw 5 pushes against the retaining sleeve 6, which then clamps the flexible guide rail 8.

[0036] Specifically, such as Figure 4 As shown, the clearance between the center hole 501 and the outer diameter of the flexible guide rail 8 is no more than 1 mm. This ensures smooth passage while preventing the flexible guide rail 8 from becoming too loose and detaching during adjustment and locking.

[0037] By pushing the sleeve 6 with the hollow screw 5, the sleeve 6 clamps the flexible guide rail 8, thereby locking the flexible guide rail 8. The wrap-around clamping connection has high strength and allows for flexible control of the locking position. Moreover, by controlling the degree to which the hollow screw 5 is screwed into the top end of the lock nut 4, the degree of clamping can be controlled.

[0038] Obviously, the lock assembly can also use a small U-shaped buckle, readily available on the market, to create a U-shaped bend at the end of the wire rope guide rail, thus preventing the wire rope guide rail from coming out of the through hole 202. This method, however, does not allow for flexible adjustment of the locking position. Similar alternative methods all fall within the protection scope of this utility model.

[0039] Specifically, such as Figure 6 As shown, the ferrule 6 is a thin-walled metal sleeve in the shape of a conical ring. The bottom end of the hollow screw 5 pushes against the large end of the ferrule 6. A beveled slit 601 is provided on the side wall of the ferrule 6.

[0040] By using a thin-walled metal sleeve in the shape of a conical ring as the ferrule 6, the flexible guide rail 8 is wrapped and clamped by pressing the outer conical surface. The setting of the oblique slit 601 ensures that the ferrule 6 generates a sufficiently large elastic deformation during the clamping process, while also facilitating disassembly and repeated use.

[0041] Obviously, the card sleeve 6 can also be made of nylon for a wrap-around clamping effect, but nylon sleeves have poor detachability and can often only be used once. Similar replacement methods all fall within the protection scope of this utility model.

[0042] The installation process of the adjustable hardware for the flexible guide rail of this utility model is as follows: First, the bottom end of the flexible guide rail 8 is fixed to the bottom of the iron tower or tower cylinder using shackles, etc. The top end of the flexible guide rail 8 is temporarily fixed using binding ropes or clamps. The bent part of the U-bolt body 1 is inserted into the mounting hole of the fixing component 7. Then, the top end of the flexible guide rail 8 is passed through the through hole 202 and then the lock nut 2 4, the sleeve 6 and the hollow screw 5 are inserted in sequence. The locking position is estimated, and the lock nut 2 4, the sleeve 6 and the hollow screw 5 are moved to the locking position. Then, the hollow screw 5 is tightened on the lock nut 2 4. During this process, the bottom end of the hollow screw 5 pushes against the large end of the sleeve 6, and the sleeve 6 is tightened to the outer wall of the flexible guide rail 8 to form a lock. The pull plate 2 is picked up and inserted into the screw section 101 of the U-bolt body 1 and the lock nut 3 is installed. Release the temporary fixation of the binding rope or clamp, and use an open-end wrench to gradually tighten the lock nut 3. Observe the tightness of the flexible guide rail 8. Stop tightening when the tension meets the requirements.

[0043] In summary, this utility model's adjustable flexible guide rail hardware uses a U-shaped bolt body 1 for easy and quick connection to a fixed point. The locking head assembly locks the flexible guide rail 8 through the through-hole 202, thus limiting and fixing the end of the flexible guide rail 8 relative to the pull plate 2. The position of the pull plate 2 is adjusted by controlling the installation position of the lock nut 3 on the screw section 101, thereby adjusting the tension of the flexible guide rail 8. This utility model's adjustable flexible guide rail hardware facilitates flexible adjustment of the flexible guide rail tension, provides high connection strength, and good safety. Furthermore, by selecting key components for galvanized protection, corrosion resistance is improved, and service life is increased. The reasonable selection of the specifications of the lock nut 3 and pull plate 2 ensures sufficient tensile strength and guarantees safety. The hollow screw 5 pushes against the retaining sleeve 6, causing the retaining sleeve 6 to clamp the flexible guide rail 8, achieving locking of the flexible guide rail 8. The wrap-around clamping connection has high strength and allows for flexible control of the locking position. Moreover, controlling the degree to which the hollow screw 5 is screwed into the top port of the lock nut 4 allows for control of the clamping degree. By using a thin-walled metal sleeve in the shape of a conical ring as the ferrule 6, the flexible guide rail 8 is wrapped and clamped by pressing the outer conical surface. The setting of the oblique slit 601 ensures that the ferrule 6 generates a sufficiently large elastic deformation during the clamping process, while also facilitating disassembly and repeated use.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0045] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A flexible guide rail adjustable fitting, connected to the end of a flexible guide rail (8), characterized in that, The device includes a U-bolt body (1), a pull plate (2), a lock nut (3), and a lock head assembly. The bent part of the U-bolt body (1) is connected to the fixed point of the guide rail. The two straight rod parts of the U-bolt body (1) are set as screw sections (101). The pull plate (2) has a through hole (201) at the corresponding position of the screw section (101). The pull plate (2) passes through and seals the open end of the U-bolt body (1) and is threadedly connected to the screw section (101) by the lock nut (3) for bottom surface limitation. The pull plate (2) has a through hole (202) in the middle. The end of the flexible guide rail (8) passes through the through hole (202) and is locked by the lock head assembly.

2. The flexible guide rail adjustable fitting according to claim 1, characterized in that, The U-bolt body (1), pull plate (2) and lock nut (3) are all galvanized steel parts, and the lock nut (3) is an anti-loosening nut.

3. The flexible guide rail adjustable fitting according to claim 1, characterized in that, The lock assembly includes a second lock nut (4), a hollow screw (5), and a retainer (6) arranged coaxially. The flexible guide rail (8) passes through the through hole (202) and then coaxially passes through the threaded hole of the second lock nut (4) and the center hole (501) of the hollow screw (5). The bottom surface of the second lock nut (4) abuts against the top surface of the pull plate (2). The hollow screw (5) is threadedly connected to the top port of the second lock nut (4). The bottom end face of the hollow screw (5) pushes against the retainer (6). The retainer (6) clamps the flexible guide rail (8).

4. The flexible guide rail adjustable fitting according to claim 3, characterized in that, The sleeve (6) is a thin-walled metal sleeve in the shape of a conical ring. The bottom end of the hollow screw (5) pushes against the large end of the sleeve (6). A slanted slit (601) is provided on the side wall of the sleeve (6).

5. The flexible guide rail adjustable fitting according to claim 3, characterized in that, The clearance between the central hole (501) and the outer diameter of the flexible guide rail (8) is less than 1 mm.

6. The flexible guide rail adjustable fitting according to claim 2, characterized in that, The specification of the lock nut (3) is not less than M16, and the thickness of the pull plate (2) is not less than 12 mm.

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