Steel strand flexible guide rail self-locking device

Abstract

The utility model belongs to the field of high-altitude operation equipment, and provides a steel strand flexible guide rail self-locking device. Comprising a hook plate, a brake arm and a self-locking assembly. Wherein the hook plate forms a bent hook part; the brake arm is rotationally connected to the hook plate; the self-locking assembly comprises a middle plate, a sliding plate and a cover plate which are sequentially arranged in a stacked mode, the brake arm is clamped between the middle plate and the hook plate, and the sliding plate is connected to the middle plate and / or the cover plate in a sliding mode and matched with the brake arm and the hook plate to form a wire passing channel used for containing a steel strand. The sliding plate is further used for getting close to or getting away from the hook part to be matched with the hook part to form a notch allowing an external steel strand to enter the wire passing channel, the self-locking assembly further comprises a reset spring, and the reset spring is connected to the sliding plate and can enable the sliding plate to have the tendency of getting close to the hook part all the time.

Description

Technical Field

[0001] The present application belongs to the field of aerial work equipment, and more specifically, relates to a self-locking device for a steel hinge wire flexible guide rail. Background Art

[0002] In today's industrial and construction fields, especially in high-altitude working environments, such as power transmission and transformation line towers, substation structures and other high-altitude working scenes, the safety protection of workers is of vital importance.

[0003] Traditional safety protection devices usually use rigid guide rails and matching anti-fall self-locking devices. However, for certain special terrains or structures, the installation and use of rigid guide rails may be greatly restricted. At present, some anti-fall devices also use steel hinge wires as flexible guide rails. Although they have overcome the limitations of rigid guide rails to a certain extent, the self-locking device (also called anti-fall device) for the flexible guide rail is not structurally reasonable. Currently, it can only be used on flexible guide rails with C-shaped encircling anti-wind deflection structures, such as the anti-wind deflection device disclosed in the patent number: ZL202321932157.9 (publication number: CN 220469455 U) and the patent name of the patent for aerial work auxiliary device. At this time, the self-locking device can pass through the C-shaped ring; however, this structure will still cause the flexible guide rail to shake in the C-shaped ring, and the flexible guide rail may also fall out of the C-shaped ring, posing a safety hazard; therefore, the development of such as Figure 8 The windproof deflector 500 structure shown is directly connected to the steel hinge wire 400 serving as a flexible guide rail. In this way, the self-locking device of the existing structure cannot freely pass through the support plate 501 of the windproof deflector used to fix the flexible guide rail. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a self-locking device for a steel hinge wire flexible guide rail to solve the technical problem in the prior art that the self-locking device cannot freely pass through the support of the wind-proof structure used to fix the flexible guide rail.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a steel hinge wire flexible guide rail self-locking device, comprising:

[0006] A hook plate, forming a curved hook portion;

[0007] a brake arm, rotatably connected to the hook plate;

[0008] The self-locking component includes an intermediate plate, a sliding plate and a cover plate which are stacked in sequence, the brake arm is clamped between the intermediate plate and the hook plate, the sliding plate is slidably connected to the intermediate plate and / or the cover plate and cooperates with the brake arm and the hook plate to form a wire-passing channel for accommodating the steel strands, the sliding plate is also used to approach or move away from the hook portion to cooperate with the hook portion to form a gap for the external steel strands to enter the wire-passing channel, the self-locking component also includes a reset spring, the reset spring is connected to the sliding plate and can make the sliding plate always have a tendency to approach the hook portion.

[0009] Optionally, the self-locking assembly further comprises a safety block movably connected to the sliding plate and a self-locking spring connected to the safety block, and an unlocking slot for the safety block to pass through is formed on the cover plate;

[0010] The unlocking slot includes a first extension section and a second extension section which are vertically connected, the first extension section is parallel to the elastic deformation direction of the self-locking spring, the second extension section is parallel to the elastic deformation direction of the return spring, and the first extension section is connected to one end of the second extension section close to the hook.

[0011] Optionally, a first accommodating cavity for accommodating the return spring is formed on one side of the sliding plate close to the cover plate, and the cover plate forms an abutting portion extending into the first accommodating cavity;

[0012] The return spring is accommodated in the first accommodating cavity and abuts against the abutting portion and the sliding plate along two ends thereof.

[0013] Optionally, a side wall of the first accommodating cavity away from the hook portion abuts against the return spring at another side opposite to the abutment portion, so that a gap of a set distance is formed between the end of the sliding plate and the hook portion.

[0014] Optionally, a second accommodating cavity for accommodating the self-locking spring is further formed on one side of the sliding plate close to the cover plate;

[0015] The safety block and the second accommodating cavity form a mutually adapted T-shaped structure so that the safety block can be movably mounted in the second accommodating cavity and, under the action of the self-locking spring, is guided by the second accommodating cavity to always have a tendency to move away from the second extension section.

[0016] Optionally, the self-locking assembly further comprises a rivet passing through the cover plate, the sliding plate, the middle plate, the brake arm and the hook plate in sequence;

[0017] The sliding plate is formed with a sliding groove for the rivet to pass through and capable of avoiding the rivet during the sliding process of the sliding plate.

[0018] Optionally, the self-locking assembly further comprises a sliding sleeve which is sleeved on the rivet and adapted to the slide groove, and the rivet is slidably connected to the slide groove via the sliding sleeve.

[0019] Optionally, the self-locking assembly further comprises a rotating sleeve sleeved on the rivet and located between the middle plate and the hook plate;

[0020] Two ends of the rotating sleeve are respectively abutted against the middle plate and the hook plate and are used to make the distance between the middle plate and the hook plate larger than the thickness of the brake arm.

[0021] Optionally, one end of the sliding plate away from the hook portion further forms a bent handle.

[0022] Optionally, the return springs are symmetrically arranged on both sides of the handle.

[0023] The beneficial effect of the steel-hinged wire flexible guide rail self-locking device provided by the present application is that: compared with the prior art, in the steel-hinged wire flexible guide rail self-locking device provided by the present application, the hook plate forms a curved hook portion and cooperates with the brake arm and the sliding plate in the self-locking assembly to form a wire-passing channel for accommodating the steel strand, the sliding plate is configured to be slidably connected to the middle plate and / or the cover plate and can approach or move away from the hook portion to cooperate with the hook portion to form a gap for the external steel strand to enter the wire-passing channel, and the sliding plate also forms a tendency to approach the hook portion under the elastic force of the reset spring. In this way, when the operator moves the sliding plate in the direction away from the hook portion, the steel strand can be easily passed into the wire-passing channel from the gap formed between the sliding plate and the hook portion; after the operator lets go, the sliding plate can automatically approach the hook portion under the action of the reset spring and restrict the steel strand in the wire-passing channel, thereby effectively preventing the self-locking device provided in the present application from detaching from the steel strand flexible guide rail, and can smoothly pass through the windproof deflection piece position, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A schematic diagram of the exploded structure of the steel hinge wire flexible guide rail self-locking device provided in an embodiment of the present application;

[0026] Figure 2 The overall structural front view of the steel hinge wire flexible guide rail self-locking device provided in the embodiment of the present application;

[0027] Figure 3 For along Figure 2 The cross-sectional structure diagram along the AA line;

[0028] Figure 4 For along Figure 2 The cross-sectional structure diagram of the middle BB line;

[0029] Figure 5 For along Figure 2 Cross-sectional structural diagram of the center CC line;

[0030] Figure 6 For along Figure 2 Cross-sectional structural diagram of the middle DD line;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of a safety block provided in an embodiment of the present application;

[0032] Figure 8 It is a schematic diagram of the flexible guide rail structure with windproof deflection parts.

[0033] Among them, the figure marks in the figure are: 100, hook plate; 101, hook part; 200, brake arm; 201, hook hole; 301, middle plate; 302, sliding plate; 303, cover plate; 304, wire passage; 305, notch; 306, reset spring; 307, safety block; 308, self-locking spring; 309, unlocking groove; 310, first accommodating chamber; 311, abutment part; 312, second accommodating chamber; 313, rivet; 314, slide groove; 315, sliding sleeve; 316, rotating sleeve; 317, handle; 391, first extension section; 392, second extension section; 400, steel strand; 500, windproof deflector; 501, support plate. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Please also read Figures 1 to 7 Now, a steel hinge wire flexible guide rail self-locking device provided in an embodiment of the present application is described. The steel hinge wire flexible guide rail self-locking device comprises a hook plate 100, a brake arm 200 and a self-locking component. Among them:

[0039] The hook plate 100 forms a curved hook portion 101, and the brake arm 200 is rotatably connected to the hook plate 100. It can be understood that in this embodiment, the brake arm 200 is also provided with a hook hole 201 for connecting the safety belt of the operator, and when the brake arm 200 rotates, the end thereof close to the steel strand can clamp the self-locking device provided in this embodiment on the flexible guide rail of the steel strand. The self-locking assembly includes an intermediate plate 301, a sliding plate 302 and a cover plate 303 which are stacked in sequence. The brake arm 200 is clamped between the intermediate plate 301 and the hook plate 100. The sliding plate 302 is slidably connected to the intermediate plate 301 and / or the cover plate 303 and cooperates with the brake arm 200 and the hook plate 100 to form a wire passage 304 for accommodating the steel strand. The sliding plate 302 is also used to approach or move away from the hook portion 101 to cooperate with the hook portion 101 to form a notch 305 for the external steel strand to enter the wire passage 304. The self-locking assembly also includes a reset spring 306, which is connected to the sliding plate 302 and can ensure that the sliding plate 302 always has a tendency to approach the hook portion 101.

[0040] According to the above structure provided in the present embodiment, in the steel strand flexible guide rail self-locking device provided in the present embodiment, the hook plate 100 forms a curved hook portion 101 and cooperates with the brake arm 200 and the sliding plate 302 in the self-locking assembly to form a wire passage 304 for accommodating the steel strand. The sliding plate 302 is configured to be slidably connected to the middle plate 301 and / or the cover plate 303 and can approach or move away from the hook portion 101 to cooperate with the hook portion 101 to form a notch 305 for the external steel strand to enter the wire passage 304. The sliding plate 302 also tends to approach the hook portion 101 under the elastic force of the reset spring 306. In this way, when the operator moves the sliding plate 302 in the direction away from the hook portion 101, the steel strand can be easily passed into the wire-passing channel 304 from the gap 305 formed between the sliding plate 302 and the hook portion 101; after the operator lets go, the sliding plate 302 can automatically approach the hook portion 101 under the action of the reset spring 306 and confine the steel strand in the wire-passing channel 304, thereby effectively preventing the self-locking device provided in this embodiment from detaching from the flexible guide rail of the steel strand, and can smoothly pass through the position of the windproof deflector 500, which is far superior to the prior art.

[0041] In another embodiment of the present application, please refer to Figures 1 to 7 The self-locking assembly further includes a safety block 307 movably connected to the sliding plate 302 and a self-locking spring 308 connected to the safety block 307. An unlocking slot 309 is formed on the cover plate 303 for the safety block 307 to pass through. The unlocking slot 309 includes a first extension section 391 and a second extension section 392 that are vertically connected. The first extension section 391 is parallel to the elastic deformation direction of the self-locking spring 308, and the second extension section 392 is parallel to the elastic deformation direction of the return spring 306. The first extension section 391 is connected to an end of the second extension section 392 close to the hook portion 101.

[0042] According to the above structure provided in this embodiment, when the safety block 307 is located at the first extension section 391, the safety block 307 can be abutted against the end of the first extension section 391 of the unlocking groove 309 under the elastic force of the self-locking spring 308. Due to the longitudinal verticality of the first extension section 391 and the first accommodating chamber 310, the movement of the sliding plate 302 is effectively restricted, so that the sliding plate 302 can be effectively prevented from sliding in the case of non-manual operation, thereby further preventing the self-locking device provided in this embodiment from being separated from the flexible guide rail of the steel strand. When the self-locking device needs to be installed on the steel strand or removed from the steel strand, it is only necessary to manually manipulate the safety block 307 to overcome the elastic force of the self-locking spring 308 and make the safety block 307 reach the end of the second extension section 392, so that the sliding plate 302 can be moved by pulling the handle 317 and the notch 305 formed by the sliding plate 302 cooperating with the hook 101 for the external steel strand to enter the wire passage 304 can be opened. After the above operation is completed, the sliding plate 302 automatically returns to its initial position under the action of the reset spring 306, and drives the safety block 307 to move to the intersection of the first extension section 391 and the second extension section 392. The self-locking spring 308 can drive the safety block 307 to move in the first extension section 391 and away from the second extension section 392 to limit the movement of the sliding block and complete self-locking. Therefore, the steel hinge wire flexible guide rail self-locking device provided in this embodiment can have better safety protection performance.

[0043] In another embodiment of the present application, please refer to Figures 1 to 7 The sliding plate 302 is formed with a first accommodating cavity 310 for accommodating the return spring 306 on one side close to the cover plate 303. The cover plate 303 forms an abutting portion 311 extending into the first accommodating cavity 310. The return spring 306 is accommodated in the first accommodating cavity 310 and abuts against the abutting portion 311 and the sliding plate 302 along both ends. According to the above structure provided in this embodiment, the first accommodating cavity 310 closed by the cover plate 303 can significantly improve the installation stability and deformation stability of the return spring 306, which is conducive to the steel hinge wire flexible guide rail self-locking device provided in this embodiment to achieve better safety protection performance.

[0044] In another embodiment of the present application, please refer to Figures 1 to 7 as well as Figure 8, the side wall of the first accommodating cavity 310 away from the hook portion 101 abuts against the return spring 306 on the other side of the abutting portion 311, so that a gap of a set distance is formed between the end of the sliding plate 302 and the hook portion 101, that is, at this time, the width of the notch 305 is smaller than the diameter of the steel strand 400 and there is a sliding gap with the support plate 501. According to the above structure provided in this embodiment, the width of the notch 305 formed between the sliding plate 302 and the hook portion 101 can enable the steel strand flexible guide rail self-locking device provided in this embodiment to smoothly pass through the support plate 501 of the windproof deflection member 500 connected to the steel strand 400, thereby facilitating the steel strand flexible guide rail self-locking device provided in this embodiment to smoothly and continuously move on the steel strand.

[0045] In another embodiment of the present application, please refer to Figures 1 to 7 The sliding plate 302 is also provided with a second accommodating cavity 312 for accommodating the self-locking spring 308 on one side thereof close to the cover plate 303. The safety block 307 and the second accommodating cavity 312 form a mutually adapted T-shaped structure so that the safety block 307 can be movably mounted in the second accommodating cavity 312, and under the action of the self-locking spring 308, the safety block 307 is guided by the second accommodating cavity 312 to always have a tendency to move away from the second extension section 392. According to the above structure provided in this embodiment, the safety block 307 can be stably mounted in the second accommodating cavity 312 and stably move and automatically remain in the first extension section 391 under the action of the self-locking spring 308, which is conducive to achieving better safety protection performance of the steel hinge wire flexible guide rail self-locking device provided in this embodiment.

[0046] In another embodiment of the present application, please refer to Figures 1 to 7 The self-locking assembly further includes a rivet 313 that passes through the cover plate 303, the sliding plate 302, the middle plate 301, the brake arm 200 and the hook plate 100 in sequence, and a slide groove 314 is formed on the sliding plate 302 for the rivet 313 to pass through and can avoid the rivet 313 during the sliding process of the sliding plate 302. According to the above structure provided in this embodiment, the slide groove 314 provided on the sliding plate 302 can make the sliding plate 302 move freely on the one hand, and on the other hand, it can also make the structure of the steel hinge wire flexible guide rail self-locking device provided in this embodiment more stable and reliable.

[0047] In another embodiment of the present application, please refer to Figures 1 to 7 The self-locking assembly further includes a sliding sleeve 315 which is sleeved on the rivet 313 and adapted to the slide groove 314, and the rivet 313 is slidably connected to the slide groove 314 through the sliding sleeve 315. According to the above structure provided in this embodiment, the rivet 313 is slidably connected to the slide groove 314 through the sliding sleeve 315, which can provide a more stable sliding guide for the sliding block, which is conducive to the steel hinge wire flexible guide rail self-locking device provided in this embodiment to achieve better safety protection performance.

[0048] In another embodiment of the present application, please refer to Figures 1 to 7 The self-locking assembly further includes a rotating sleeve 316 which is sleeved on the rivet 313 and located between the middle plate 301 and the hook plate 100. The two ends of the rotating sleeve 316 respectively abut against the middle plate 301 and the hook plate 100 and are used to make the distance between the middle plate 301 and the hook plate 100 greater than the thickness of the brake arm 200. According to the above structure provided in this embodiment, the rotating sleeve 316 abutting between the middle plate 301 and the hook plate 100 can provide a more sufficient rotation space for the brake arm 200, so that the brake arm 200 can rotate more smoothly relative to the hook plate 100, which is conducive to the steel hinge wire flexible guide rail self-locking device provided in this embodiment to achieve better safety protection performance.

[0049] In another embodiment of the present application, please refer to Figures 1 to 7 , a curved handle 317 is formed at one end of the sliding plate 302 away from the hook portion 101. According to the above structure provided in this embodiment, the handle 317 provided on the sliding plate 302 can make the operator move the sliding plate 302 more easily after the safety block 307 is unlocked, so as to facilitate the installation of the self-locking device provided in this embodiment on the flexible guide rail or the removal of the self-locking device from the flexible guide rail.

[0050] In another embodiment of the present application, please refer to Figures 1 to 7 , the reset springs 306 are symmetrically arranged on both sides of the handle 317. According to the above structure provided in this embodiment, the reset springs 306 symmetrically arranged on both sides of the handle 317 can make the movement process of the sliding plate 302 more stable, which is conducive to the steel hinge wire flexible guide rail self-locking device provided in this embodiment to achieve better safety protection performance.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A steel hinge wire flexible guide rail self-locking device, characterized in that: include: A hook plate (100) forming a curved hook portion (101); A brake arm (200) rotatably connected to the hook plate (100); A self-locking assembly comprises an intermediate plate (301), a sliding plate (302) and a cover plate (303) which are stacked in sequence, wherein the brake arm (200) is clamped between the intermediate plate (301) and the hook plate (100), the sliding plate (302) is slidably connected to the intermediate plate (301) and / or the cover plate (303) and cooperates with the brake arm (200) and the hook plate (100) to form a wire-passing channel (304) for accommodating a steel strand, the sliding plate (302) is also used to move closer to or farther away from the hook portion (101) to cooperate with the hook portion (101) to form a notch (305) for allowing an external steel strand to enter the wire-passing channel (304), and the self-locking assembly further comprises a return spring (306), wherein the return spring (306) is connected to the sliding plate (302) and can make the sliding plate (302) always have a tendency to move closer to the hook portion (101).

2. The steel hinge wire flexible guide rail self-locking device according to claim 1, characterized in that: The self-locking assembly further comprises a safety block (307) movably connected to the sliding plate (302) and a self-locking spring (308) connected to the safety block (307); an unlocking slot (309) for the safety block (307) to pass through is formed on the cover plate (303); The unlocking slot (309) comprises a first extension section (391) and a second extension section (392) which are vertically connected, the first extension section (391) being parallel to the elastic deformation direction of the self-locking spring (308), the second extension section (392) being parallel to the elastic deformation direction of the return spring (306), and the first extension section (391) being connected to an end of the second extension section (392) close to the hook portion (101).

3. The steel hinge wire flexible guide rail self-locking device according to claim 2, characterized in that: A first accommodating cavity (310) for accommodating the return spring (306) is formed on one side of the sliding plate (302) close to the cover plate (303), and the cover plate (303) forms an abutting portion (311) extending into the first accommodating cavity (310); The return spring (306) is accommodated in the first accommodating cavity (310) and abuts against the abutment portion (311) and the sliding plate (302) along two ends thereof.

4. The steel hinge wire flexible guide rail self-locking device according to claim 3, characterized in that: The side wall of the first accommodating cavity (310) away from the hook portion (101) abuts against the return spring (306) on the other side opposite to the abutment portion (311), so that a gap of a set distance is formed between the end of the sliding plate (302) and the hook portion (101).

5. The steel hinge wire flexible guide rail self-locking device according to claim 3, characterized in that: A second accommodating cavity (312) for accommodating the self-locking spring (308) is also formed on a side of the sliding plate (302) close to the cover plate (303); The safety block (307) and the second accommodating cavity (312) form a mutually adapted T-shaped structure so that the safety block (307) is movably mounted in the second accommodating cavity (312) and, under the action of the self-locking spring (308), is guided by the second accommodating cavity (312) to always have a tendency to move away from the second extension section (392).

6. The steel hinge wire flexible guide rail self-locking device according to claim 1, characterized in that: The self-locking assembly further comprises a rivet (313) passing through the cover plate (303), the sliding plate (302), the middle plate (301), the brake arm (200) and the hook plate (100) in sequence; A sliding groove (314) is formed on the sliding plate (302) for the rivet (313) to pass through and capable of avoiding the rivet (313) during the sliding process of the sliding plate (302).

7. The steel hinge wire flexible guide rail self-locking device according to claim 6, characterized in that: The self-locking component further comprises a sliding sleeve (315) which is sleeved on the rivet (313) and adapted to the sliding groove (314); the rivet (313) is slidably connected to the sliding groove (314) via the sliding sleeve (315).

8. The steel hinge wire flexible guide rail self-locking device according to claim 6, characterized in that: The self-locking assembly further comprises a rotating sleeve (316) sleeved on the rivet (313) and located between the middle plate (301) and the hook plate (100); The two ends of the rotating sleeve (316) respectively abut against the middle plate (301) and the hook plate (100) and are used to make the distance between the middle plate (301) and the hook plate (100) greater than the thickness of the brake arm (200).

9. The steel hinge wire flexible guide rail self-locking device according to claim 1, characterized in that: One end of the sliding plate (302) away from the hook portion (101) also forms a bent handle (317).

10. The steel hinge wire flexible guide rail self-locking device according to claim 9, characterized in that: The return spring (306) is symmetrically arranged on both sides of the handle (317).

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