Anti-falling self-locking device

Abstract

The invention relates to the technical field of safety protection, and provides an anti-falling self-locking device which comprises an anti-falling main body, a locking assembly and an anti-inversion part, the anti-falling main body is provided with a mounting groove and a containing groove, the mounting groove and the containing groove are communicated with each other, the mounting groove is suitable for being connected with a guide rail, and the groove wall of the containing groove is provided with a matching part; the locking assembly comprises a pivot, a locking piece and a first elastic piece, and the pivot penetrates through the anti-falling body and is located in the containing groove. The locking piece is arranged on the pivot and is in running fit with the pivot; the first elastic piece is arranged on the pivot in a sleeving mode and connected with the locking piece and the anti-falling body. The anti-inversion piece is movably arranged on the locking piece; when the anti-falling main body is in an inverted state, the locking piece extends into the mounting groove from the accommodating groove, and the anti-inverted piece extends out of the locking piece under the action of gravity and is matched with the matching part for limiting, so that the connection between the anti-falling main body and the guide rail is limited. According to the anti-falling self-locking device, the anti-falling protection function can be achieved, the anti-falling failure caused by the wrong installation direction of the anti-falling self-locking device is avoided, and the use safety of the anti-falling self-locking device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety protection, and provides an anti-falling self-locking device. Background Art

[0002] As an important part of the power system, the transmission line erection structure mainly consists of a conductor system, an insulation device, a tower support system, a lightning protection wire network and a grounding system. Among them, the tower is a key load-bearing component. During the operation and maintenance of the transmission line, operators need to perform high-altitude operations on the tower. According to relevant operation requirements, operators must be equipped with reliable anti-falling devices.

[0003] However, the currently widely used anti-falling self-locking devices in the industry have the following technical defects: The anti-falling self-locking device only relies on visual markings for direction indication. In actual operations, affected by the tower structure, lighting conditions and the operator's perspective, the misinstallation rate is relatively high. When the operator installs the anti-falling self-locking device in the reverse direction, the anti-falling self-locking device cannot achieve passive protection, resulting in the complete failure of the locking function. Summary of the Invention

[0004] The present invention provides an anti-falling self-locking device to solve the above technical defects in the prior art, avoid the anti-falling failure caused by the wrong installation direction of the anti-falling self-locking device, ensure that the anti-falling self-locking device can only be used in the correct installation direction, and improve the safety of using the anti-falling self-locking device.

[0005] The present invention provides an anti-falling self-locking device, including: An anti-falling main body, provided with an installation groove and a receiving groove, the installation groove and the receiving groove communicate with each other, the installation groove is adapted to be connected to a guide rail, and the groove wall of the receiving groove is provided with a matching portion; A locking assembly, including: A pivot shaft, passing through the anti-falling main body and located in the receiving groove; A locking member, provided on the pivot shaft and rotatably cooperating with the pivot shaft; A first elastic member, sleeved on the pivot shaft, one end of the first elastic member is connected to the locking member, and the other end of the first elastic member is connected to the anti-falling main body; An anti-inversion member, movably provided on the locking member; Wherein, when the anti-falling main body is in an inverted state, the locking member extends from the receiving groove into the installation groove, and the anti-inversion member extends out of the locking member under the action of gravity and cooperates with the matching portion for limiting, so as to limit the connection between the anti-falling main body and the guide rail.

[0006] According to the anti-falling self-locking device provided by the present invention, the anti-inversion member includes: A limiting section; The insertion section is connected to the limiting section, and the cross-sectional area of the insertion section is smaller than that of the limiting section; Wherein, a receiving cavity is provided on the locking member, a limiting step is provided on the inner wall of the receiving cavity, and both the limiting section and the insertion section are located in the receiving cavity; when the anti-falling main body is in an inverted state, the insertion section extends out of the locking member and cooperates with the cooperating portion for limiting, and the limiting section abuts against the limiting step.

[0007] According to the anti-falling self-locking device provided by the present invention, the following are provided on the limiting section: A limiting plane, and the limiting plane is parallel to the axis of the limiting section; Wherein, an opening is provided on the side wall of the locking member, the opening communicates with the receiving cavity, and the limiting section and the insertion section enter the receiving cavity through the opening.

[0008] According to the anti-falling self-locking device provided by the present invention, the cross-sectional shape of the limiting section is a bow shape, the bow shape is a planar region surrounded by an arc and a corresponding chord, and the chord height of the bow shape is greater than the radius of the bow shape; Wherein, the width of the opening is greater than or equal to the chord height of the bow shape, and the width of the opening is less than the diameter of the bow shape.

[0009] According to the anti-falling self-locking device provided by the present invention, the following are provided on the anti-falling main body: An identification part, and the indicating direction of the identification part is consistent with the correct installation direction of the anti-falling main body.

[0010] According to the anti-falling self-locking device provided by the present invention, it further includes: A limiting assembly, which is movably arranged on the anti-falling main body and is adapted to switch between a limiting position and a limiting release position; Wherein, a limiting hole is provided on the locking member. In the limiting position, the limiting assembly is inserted into the limiting hole to limit the rotation of the locking member, so that the locking member is completely disengaged from physical contact with the guide rail; in the limiting release position, the limiting assembly disengages from the limiting hole, and the locking member can rotate freely.

[0011] According to the anti-falling self-locking device provided by the present invention, the limiting assembly includes: A limiting main body, which is inserted through the anti-falling main body and is adapted to switch between a limiting position and a limiting release position; first limiting parts and second limiting parts are respectively provided at positions near both ends of the limiting main body; A second elastic member, which is sleeved on the limiting main body, and both ends of the second elastic member respectively abut against the first limiting part and the second limiting part; Wherein, at the limiting position, the limiting body is inserted into the limiting hole, and the second elastic member is in an elastically deformed state; at the limiting release position, the limiting body is disengaged from the limiting hole, and the second elastic member is in a state of restoring elastic deformation.

[0012] According to the anti-falling self-locking device provided by the present invention, the limiting assembly further includes: A sleeve, detachably connected to the anti-falling main body. The sleeve is provided with a first limiting groove and a second limiting groove at intervals. Both the first limiting groove and the second limiting groove extend along the axial direction of the sleeve, and the depth of the first limiting groove is greater than the depth of the second limiting groove; Wherein, at the limiting position, the first limiting portion is located in the first limiting groove; at the limiting release position, the first limiting portion is located in the second limiting groove.

[0013] According to the anti-falling self-locking device provided by the present invention, the limiting body includes: A shaft body, with a plugging portion formed at the end. The shape of the plugging portion is adapted to the shape of the limiting hole; A limiting end head, detachably connected to the shaft body; Wherein, the first limiting portion is provided on the outer surface of the limiting end head, and the first limiting portion extends along the axis of the limiting end head; the second limiting portion is provided at a position of the shaft body close to the plugging portion, and the second limiting portion extends along the radial direction of the shaft body.

[0014] According to the anti-falling self-locking device provided by the present invention, the limiting body further includes: A trigger member, connected to the limiting end head, for triggering the movement of the limiting end head to drive the shaft body to switch between the limiting position and the limiting release position.

[0015] For the anti-falling self-locking device provided by the present invention, by movably arranging an anti-inversion member on the locking member and arranging a matching portion on the inner wall of the receiving groove of the anti-falling main body. When the anti-falling self-locking device is wrongly installed in an inverted manner, the locking member extends into the installation groove to form a physical interference, and the anti-inversion member automatically moves downward under the action of gravity to form a limit with the matching portion on the inner wall of the receiving groove, so as to prevent the anti-falling main body from being connected to the guide rail. At this time, even if a force is forcibly applied to the anti-falling main body, the anti-falling main body cannot be clamped into the guide rail, and the anti-inversion protection function can be realized, avoiding the anti-falling failure caused by the wrong installation direction of the anti-falling self-locking device, ensuring that the anti-falling self-locking device can only be used in the correct installation direction, and improving the safety of using the anti-falling self-locking device. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is one of the schematic structural diagrams of the anti-falling self-locking device provided by the embodiment of the present invention.

[0018] Figure 2 It is one of the schematic exploded structural diagrams of the anti-falling self-locking device provided by the embodiment of the present invention.

[0019] Figure 3 It is the second schematic exploded structural diagram of the anti-falling self-locking device provided by the embodiment of the present invention.

[0020] Figure 4 is Figure 3 the enlarged view of part A in

[0021] Figure 5 It is the cross-sectional view of the anti-falling self-locking device provided by the embodiment of the present invention.

[0022] Figure 6 It is one of the schematic diagrams of the usage state of the anti-falling self-locking device provided by the embodiment of the present invention (the anti-falling main body is in an inverted state).

[0023] Figure 7 It is the second schematic diagram of the usage state of the anti-falling self-locking device provided by the embodiment of the present invention (the anti-falling main body is in a normal state).

[0024] Figure 8 It is the second schematic structural diagram of the anti-falling self-locking device provided by the embodiment of the present invention.

[0025] Reference numerals: 10. Anti-falling main body; 11. Installation groove; 12. Accommodation groove; 13. Matching part; 15. Identification part; 20. Locking component; 21. Pivot; 22. Locking piece; 221. Limiting hole; 222. Accommodation cavity; 223. Limiting step; 224. Opening; 23. First elastic member; 24. Circlip; 30. Limiting component; 31. Limiting main body; 311. Shaft body; 312. Limiting end; 313. Trigger member; 314. First limiting part; 315. Second limiting part; 316. Insertion part; 32. Second elastic member; 33. Sleeve; 331. First limiting groove; 332. Second limiting groove; 40. Anti-inversion part; 41. Limiting section; 411. Limiting plane; 42. Insertion section; 50. Guide wheel assembly; 51. First guide wheel; 52. Second guide wheel; 53. Third guide wheel. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0028] In the embodiments of the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art may combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0030] Figure 1 is one of the structural schematic diagrams of the anti-falling self-locking device provided by the embodiments of the present invention. Figure 2It is one of the schematic diagrams of the structural decomposition of the anti-falling self-locking device provided by the embodiment of the present invention. Figure 3 It is the second schematic diagram of the structural decomposition of the anti-falling self-locking device provided by the embodiment of the present invention. Figure 4 It is Figure 3 The enlarged view of part A in Figure 5 It is the cross-sectional view of the anti-falling self-locking device provided by the embodiment of the present invention. Figure 6 It is one of the schematic diagrams of the usage state of the anti-falling self-locking device provided by the embodiment of the present invention (the anti-falling main body is in an inverted state). Figure 7 It is the second schematic diagram of the usage state of the anti-falling self-locking device provided by the embodiment of the present invention (the anti-falling main body is in a normal state).

[0031] Refer to Figures 1 to 7 The embodiment of the present invention provides an anti-falling self-locking device, which can be applied to high-altitude operation scenarios such as electric power, petroleum, communication, shipbuilding, construction, exterior wall spraying, cleaning, etc., and can prevent operators from having accidental falling accidents during high-altitude operations.

[0032] Taking the application of the anti-falling self-locking device in the power system as an example, the anti-falling self-locking device is used in the operation and maintenance process of transmission lines to prevent operators from having high-altitude falling accidents during vertical climbing and high-altitude lateral movement operations.

[0033] Before use, the anti-falling self-locking device is assembled onto the guide rail. During the climbing process of the operator, the anti-falling self-locking device moves along with the operator on the guide rail. When the operator accidentally falls, the anti-falling self-locking device realizes falling braking by cooperating with the guide rail through a spring-loaded locking mechanism to protect the life safety of the operator and improve the safety of high-altitude operations.

[0034] The anti-falling self-locking device provided by the embodiment of the present invention is applicable to high-altitude operation scenarios that require frequent change of moving direction, such as high-voltage transmission line inspection. The anti-falling self-locking device is also a self-locking anti-falling self-locking device, which includes an anti-falling main body 10, a locking assembly 20 and an anti-inversion part 40.

[0035] The anti-falling main body 10 can be an integral structure made of materials such as aluminum alloy. The anti-falling main body 10 can be a shell or a seat body. The anti-falling main body 10 is provided with an installation groove 11 and a receiving groove 12, and the installation groove 11 and the receiving groove 12 communicate with each other; the installation groove 11 extends along the length direction of the anti-falling main body 10 and is adapted to be connected to the guide rail and can move along the guide rail.

[0036] Among them, the shape and size of the installation groove 11 should match the guide rail. For example, if the guide rail is a "T"-shaped structure, the installation groove 11 should be a corresponding "T"-shaped groove. At the end of the installation groove 11, a guiding inclined surface can be provided. When the anti-falling main body 10 is installed onto the guide rail, the guiding inclined surface can guide the anti-falling main body 10 to smoothly slide into the correct installation position, ensuring the convenience and accuracy of installation.

[0037] The locking assembly 20 includes a pivot 21, a locking member 22, and a first elastic member 23. The pivot 21 passes through the anti-falling main body 10. The locking member 22 is located in the receiving groove 12 and is rotatably engaged with the pivot 21. The first elastic member 23 is sleeved on the pivot 21. One end of the first elastic member 23 is connected to the locking member 22, and the other end of the first elastic member 23 is connected to the anti-falling main body 10.

[0038] Among them, the pivot 21 can be made of high-strength and wear-resistant materials such as stainless steel or alloy steel. An installation hole for installing the pivot 21 is provided on the anti-falling main body 10 to ensure that the pivot 21 can pass through the anti-falling main body 10. The fitting clearance between the pivot 21 and the installation hole should be controlled within a small range to reduce the sway of the pivot 21 during rotation. Anti-disengagement structures such as limit disks, circlips 24, or nuts can be provided at both ends of the pivot 21 to prevent the pivot 21 from accidentally disengaging from the installation hole of the anti-falling main body 10 during use.

[0039] Among them, the locking member 22 can adopt a cam structure. The locking member 22 is eccentrically arranged with the pivot 21. A locking surface is formed on the locking member 22 away from the circumferential surface of the pivot 21. The locking surface can be designed as a progressive inclined surface, and a self-reinforcing locking force can be generated at the moment of falling. In addition, a bearing such as a ball bearing or a needle bearing can be provided at the connection between the locking member 22 and the pivot 21 to reduce the rotational friction and enable the locking member 22 to rotate flexibly.

[0040] Among them, the first elastic member 23 can adopt a single torsion spring or symmetrically arranged double torsion springs. The first elastic member 23 forces the locking member 22 to maintain contact pressure with the guide rail under normal conditions.

[0041] When the falling acceleration exceeds the designed threshold value, the locking member 22 rotates around the pivot 21 towards the guide rail side under the action of inertia force, and the locking surface of the locking member 22 contacts and presses against the guide rail to achieve locking. When it is necessary to unlock the locking function of the anti-falling self-locking device and make the anti-falling self-locking device move with the operator, push the locking member 22 to rotate around the pivot 21, so that the locking member 22 overcomes the pre-tightening force of the first elastic member 23 to disengage from the guide rail.

[0042] The anti-inversion member 40 is movably provided on the locking member 22 and can move freely on the locking member 22. A matching portion 13 is provided on the groove wall of the receiving groove 12. When the anti-falling main body 10 is in an inverted state, as Figure 6 shown, the locking member 22 extends from the receiving groove 12 into the installation groove 11. The anti-inversion member 40 extends out of the locking member 22 under the action of gravity and cooperates with the matching portion 13 for limiting to restrict the connection between the anti-falling main body 10 and the guide rail.

[0043] Among them, the structure of the mating part 13 can be a limiting groove or a limiting hole, and the structure of the mating part 13 can also be other structures that can form a limit. The structure of the mating part 13 is specifically determined according to the structure of the anti-inversion part 40. For example, the anti-inversion part 40 is a rod-shaped structure, and the mating part 13 is a limiting groove or a limiting hole. The end of the anti-inversion part 40 can be inserted into the limiting groove or the limiting hole, so as to limit the rotational freedom of the anti-falling main body 10 and prevent the anti-falling self-locking device from being wrongly installed on the guide rail in the inverted state, so as to avoid dangerous accidents.

[0044] Among them, the anti-inversion part 40 can be an integral structure, and the anti-inversion part 40 can be a telescopic rod structure. When the anti-inversion part 40 is a telescopic rod structure, the telescopic part of the anti-inversion part 40 can adopt a nested structure. For example, the nested combination of an outer rod and an inner rod, and a limiting structure such as a protrusion or a clamping groove is arranged on the inner rod to cooperate and guide with the corresponding structure arranged on the outer rod.

[0045] Refer to Figure 7 , when the anti-falling main body 10 is in the normal installation state, the anti-inversion part 40 is received inside the locking part 22 under its own gravity, without affecting the normal operation of the anti-falling self-locking device.

[0046] Refer to Figure 6 , when the anti-falling main body 10 is in the inverted state (wrong installation state), the locking part 22 rotates and extends into the installation groove 11, and the anti-inversion part 40 extends out under its own gravity and cooperates with the mating part 13 for limiting. Since the locking part 22 extends into the installation groove 11, the cooperation between the guide rail and the installation groove 11 is interfered. Even if force is applied to the anti-falling main body 10 forcibly, the anti-falling main body 10 cannot be clamped into the guide rail. Only when the installation direction is correctly adjusted (the arrow is upward), the anti-inversion part 40 disengages from the mating part 13 under the action of gravity, and the locking part 22 can reset to the movable position. Thus, the wrong connection between the anti-falling main body 10 and the guide rail is prevented, ensuring that the anti-falling self-locking device can only be used in the correct installation direction.

[0047] In order to ensure the cooperation accuracy between the anti-inversion part 40 and the mating part 13, a guiding structure such as a conical head can be arranged at the end of the anti-inversion part 40, which can cooperate with the mating part 13 more smoothly during the extension process.

[0048] It is understandable that the anti-fall self-locking device provided in the embodiment of the present invention is provided by movably setting the anti-flipping member 40 on the locking member 22, and setting the matching portion 13 on the inner wall of the receiving groove 12 of the anti-falling body 10. When the anti-fall self-locking device is mistakenly installed upside down, the locking member 22 extends into the installation groove 11 to form physical interference, and the anti-flipping member 40 automatically moves downward under the action of gravity, and forms a limit with the matching portion 13 on the inner wall of the receiving groove 12 to prevent the anti-falling body 10 from connecting with the guide rail. At this time, even if pressure is forcibly applied to the anti-falling body 10, the anti-falling body 10 cannot be stuck into the guide rail, and the anti-flipping protection function can be realized, so as to avoid the anti-falling self-locking device from failing to prevent falling due to the wrong installation direction, ensure that the anti-falling self-locking device can only be used in the correct installation direction, and improve the safety of the anti-falling self-locking device.

[0049] Continue reading Figure 4 In some embodiments of the present invention, the anti-flip component 40 includes a limiting section 41 and an inserting section 42 , the inserting section 42 is connected to the limiting section 41 , and the cross-sectional area of ​​the inserting section 42 is smaller than the cross-sectional area of ​​the limiting section 41 .

[0050] The limiting section 41 and the plug section 42 can be manufactured by integrated molding, such as metal casting or plastic injection molding, so as to ensure the connection strength between the two and prevent the occurrence of breakage or separation during use.

[0051] The cross-sectional shape of the limiting section 41 can be designed to be circular or square. The cross-sectional shape of the plug section 42 matches the shape of the matching portion 13. When the matching portion 13 is a circular hole, the plug section 42 can be designed to be cylindrical. A chamfer or a conical transition section can also be provided at the end of the plug section 42 to facilitate alignment and insertion of the matching portion 13 during plugging.

[0052] Continue reading Figure 4 A receiving cavity 222 is provided on the locking member 22 , and the shape of the receiving cavity 222 is adapted to the overall shape of the anti-reversal member 40 , so that both the limiting section 41 and the plug-in section 42 can be located in the receiving cavity 222 .

[0053] For example, the anti-flip component 40 is a roughly cylindrical structure, the accommodating cavity 222 is correspondingly a cylindrical cavity, and the depth of the accommodating cavity 222 is slightly larger than the length of the anti-flip component 40 in the accommodating state to ensure that the anti-flip component 40 can be completely accommodated in the accommodating cavity 222 without affecting the normal rotation of the locking component 22.

[0054] Continue reading Figure 4 The inner wall of the accommodating cavity 222 is provided with a limiting step 223 , which is equivalent to the accommodating cavity 22 being a step hole. The limiting step 223 is used to limit the limiting section 41 to prevent the entire anti-flipping component 40 from escaping from the accommodating cavity 222 .

[0055] When the anti - falling self - locking device is properly installed and used, the anti - reverse part 40 is completely received within the accommodation cavity 222. At this time, the limiting section 41 is located inside the accommodation cavity 222 and does not come into contact with the limiting step 223. The inserting section 42 is hidden within the hole restricted by the limiting step 223 and will not cause any interference with the mating part 13.

[0056] When the anti - falling main body 10 is in an inverted state, the anti - reverse part 40 starts to move under the action of gravity. The inserting section 42 extends out of the accommodation cavity 222 and inserts into the mating part 13. As the inserting section 42 extends, the limiting section 41 gradually approaches the limiting step 223. After the inserting section 42 is completely inserted into the mating part 13 for limiting, the limiting section 41 abuts completely against the limiting step 223. At this time, the limiting section 41 and the inserting section 42 of the anti - reverse part 40 act together to restrict the rotation of the anti - falling main body 10, preventing the anti - falling main body 10 from being wrongly connected to the guide rail.

[0057] In addition, some guiding grooves can be provided on the inner wall of the accommodation cavity 222, and protrusions or sliders can be provided on the corresponding sections of the anti - reverse part 40 to guide the anti - reverse part 40 to expand and contract within the accommodation cavity 222 along a preset path, preventing the anti - reverse part 40 from shifting or getting stuck.

[0058] Continue to refer to Figure 4 In some embodiments of the present invention, a limiting plane 411 is provided on the limiting section 41, and the limiting plane 411 is parallel to the axis of the limiting section 41. The limiting plane 411 can be manufactured by mechanical processing methods such as milling or grinding.

[0059] Among them, an opening 224 is provided on the side wall of the locking part 22. The shape of the opening 224 should match the combined shape of the limiting section 41 and the inserting section 42. When the combination of the limiting section 41 and the inserting section 42 is a structure similar to a stepped shaft, the shape of the opening 224 can be "T" - shaped. The opening 224 communicates with the accommodation cavity 222, and the limiting section 41 and the inserting section 42 enter the accommodation cavity 222 through the opening 224.

[0060] During the assembly process, first align the limiting section 41 and the inserting section 42 with the corresponding positions of the opening 224 so that the anti - reverse part 40 enters the accommodation cavity 222 from one side of the locking part 22. After the anti - reverse part 40 completely enters the accommodation cavity 222, it is necessary to ensure that the limiting section 41 can move freely within the accommodation cavity 222.

[0061] Refer to Figure 7 When the anti - falling self - locking device is working properly, the limiting section 41 and the inserting section 42 are located within the accommodation cavity 222 and will not affect the rotation of the locking part 22.

[0062] Refer to Figure 6, when the anti - fall main body 10 is in an inverted state, the anti - reverse installation part 40 moves downward under the action of gravity. The limiting plane 411 on the limiting section 41 can ensure the stable attitude of the anti - reverse installation part 40 during the movement and accurately cooperate with the matching part 13 along a predetermined direction.

[0063] Continue to refer to 3 and Figure 4 , in some embodiments of the present invention, the cross - sectional shape of the limiting section 41 is a bow shape. The bow shape is a planar region enclosed by an arc and the corresponding chord. The chord height of the bow shape is greater than the radius of the bow shape, and the chord height is the vertical distance from the vertex of the arc to the corresponding chord.

[0064] Among them, the width of the opening 224 is greater than or equal to the chord height of the bow shape. Such a setting is to ensure that the limiting section 41 can smoothly pass through the opening 224 and enter the accommodating cavity 222. And the width of the opening 224 is less than the diameter of the bow shape. Such a setting is to prevent the limiting section 41 from accidentally slipping out of the opening 224 during normal use. At the same time, it also helps to position the limiting section 41 during assembly to ensure its correct installation in the accommodating cavity 222.

[0065] The dimension of the length direction of the opening 224 should be designed according to the overall length of the limiting section 41 and the inserting section 42 to ensure that the limiting section 41 and the inserting section 42 can completely pass through the opening 224 and enter the accommodating cavity 222 without being obstructed unnecessarily during the entry process.

[0066] Continue to refer to Figure 2 、 Figure 3 and Figure 5 , in some embodiments of the present invention, the anti - fall main body 10 is provided with an identification part 15, and the indicating direction of the identification part 15 is consistent with the correct installation direction of the anti - fall main body 10. Among them, the identification part 15 includes an arrow identification, a text identification or a graphic identification.

[0067] When the identification part 15 is an arrow, the shape of the arrow adopts a standard triangular arrow, and the color of the arrow is selected as a prominent color, such as red or yellow. The position of the arrow is set on the surface of the anti - fall main body 10. For example, the arrow is set at a position near the end of the anti - fall main body 10. When the anti - fall main body 10 is correctly installed on the guide rail, the direction of the arrow is consistent with the extension direction of the guide rail.

[0068] When using a text description as the identification part 15, the text content can be words such as "correct installation direction", and the text and the arrow identification can be used in combination.

[0069] When the identification part 15 is a graphic identification, the connection relationship and relative direction between the anti - fall main body 10 and the guide rail can be clearly represented by lines and patterns.

[0070] During the operation and maintenance of transmission lines, maintenance personnel need to frequently perform vertical climbing and horizontal movement operations at high altitudes. In the scenario of horizontal movement, the deflection moment is likely to be caused by the change in the body position of the operator, which exacerbates the abnormal friction between the locking member 22 and the guide rail. Moreover, in a horizontal vibration environment, the locking assembly 20 is prone to resonant jamming, resulting in the movement blockage of the fall arrest self-locking device and making it difficult to use smoothly.

[0071] Therefore, referring further to Figure 2 , Figure 3 and Figure 5 , the fall arrest self-locking device provided by the embodiment of the present invention further includes a limit assembly 30, which is movably arranged on the fall arrest main body 10 and is adapted to switch between a limit position and a limit release position.

[0072] Wherein, a limit hole 221 is provided on the locking member 22. When the limit assembly 30 is in the limit position, the limit assembly 30 is inserted into the limit hole 221 to limit the rotation of the locking assembly 20, so that the locking member 22 is completely disengaged from physical contact with the guide rail, facilitating the horizontal movement of the fall arrest self-locking device. In the limit release position, the limit assembly 30 disengages from the limit hole 221, and the locking assembly 20 can rotate freely. At this time, the fall arrest self-locking device can move vertically, and this process can be understood as the normal use process of the fall arrest self-locking device.

[0073] It should be noted that the horizontal movement of the fall arrest self-locking device can be understood as a horizontal movement mode applicable to the cross arm part of the tower pole. The vertical movement of the fall arrest self-locking device can be understood as performing vertical operation along the guide rail, that is, operating in the vertical fall arrest mode.

[0074] It can be understood that for the fall arrest self-locking device provided by the embodiment of the present invention, by providing a limit hole 221 on the locking member 22 and movably arranging a limit assembly 30 on the fall arrest main body 10, the limit assembly 30 can be switched between a limit position and a limit release position. Equivalently, by adding a limit assembly 30 (i.e., a mechanical switch), the operator can operate the limit assembly 30 to realize the quick conversion of the fall arrest self-locking device between the horizontal movement mode and the vertical fall arrest mode. In the horizontal movement mode, the locking member 22 is completely disengaged from physical contact with the guide rail, facilitating the free horizontal movement of the fall arrest self-locking device; in the vertical fall arrest mode, the limit assembly 30 is reset to make the locking member 22 contact with the guide rail, ensuring that the self-locking response can be realized instantly during the fall.

[0075] When the limiting component 30 is in the limiting position, the limiting component 30 is inserted into the limiting hole 221 and cooperates with the limiting hole 221 to rigidly lock the locking member 22. The locking member 22 is completely disengaged from physical contact with the guide rail, eliminating the lateral deflection moment conduction path caused by the change of the operator's body position and reducing the abnormal friction loss between the locking member 22 and the guide rail. Moreover, after the limiting component 30 is inserted into the limiting hole 221 on the locking member 22, the rotational freedom of the locking member 22 is forcibly constrained, destroying the natural frequency matching condition of the locking member 22 in the lateral vibration environment, fundamentally eliminating the resonant jamming phenomenon, enabling the anti-falling self-locking device to smoothly perform transverse movement, and ensuring that the anti-falling self-locking device can still move smoothly under harsh environments such as strong wind and equipment vibration.

[0076] Continue to refer to Figures 2 to 5 In some embodiments of the present invention, the limiting component 30 includes a limiting main body 31 and a second elastic member 32. The limiting main body 31 passes through the anti-falling main body 10. Similarly, an installation hole for accommodating the limiting main body 31 is provided on the anti-falling main body 10 along the width direction of the anti-falling main body 10, ensuring that the limiting main body 31 can pass through the anti-falling main body 10 and can perform linear reciprocating movement in this installation hole to change the position of the limiting main body 31 relative to the locking member 22, so as to switch between the limiting position and the limiting release position.

[0077] First limiting portions 314 and second limiting portions 315 are respectively provided at positions near both ends of the limiting main body 31. The second elastic member 32 is sleeved on the limiting main body 31. One end of the second elastic member 32 abuts against the first limiting portion 314, and the other end of the second elastic member 32 abuts against the second limiting portion 315.

[0078] Refer to Figure 5 In the limiting position, the limiting main body 31 is inserted into the limiting hole 221, and the second elastic member 32 is in an elastically deformed state, that is, the second elastic member 32 has the ability to recover elastic deformation, and the rotational freedom of the locking member 22 is constrained. In the limiting release position, the limiting main body 31 is disengaged from the limiting hole 221, and the second elastic member 32 is in a state of recovering elastic deformation, and the locking member 22 can rotate automatically.

[0079] Among them, the second elastic member 32 may include a compression spring or a disc spring group. The second elastic member 32 is used to generate an axial pre-tightening force in the limiting position, and forms a two-way mechanical constraint through the first limiting portion 314 and the second limiting portion 315 to ensure the rigid cooperation between the limiting main body 31 and the limiting hole 221.

[0080] In this embodiment, it can be understood that the limiting main body 31 is an integrally formed structure. For the convenience of installation, the second limiting portion 315 can be independently provided and fixed to the main body of the limiting main body 31 by means of threaded connection or welding.

[0081] Continue to refer to Figures 2 to 5 In an alternative embodiment of the present invention, the limiting component 30 further includes a sleeve 33. The sleeve 33 is detachably connected to the anti-falling main body 10, that is, the sleeve 33 can be threadedly connected to the anti-falling main body 10 for convenient disassembly and replacement. The sleeve 33 is provided with a first limiting groove 331 and a second limiting groove 332 at intervals. Both the first limiting groove 331 and the second limiting groove 332 extend along the axial direction of the sleeve 33, and the depth of the first limiting groove 331 is greater than the depth of the second limiting groove 332.

[0082] Refer to Figure 2 and Figure 5 When in the limiting position, the first limiting portion 314 is located in the first limiting groove 331, the limiting main body 31 is inserted into the limiting hole 221, the second elastic member 32 is in an elastically deformed state, and the rotational freedom of the locking member 22 is restricted. When in the limiting release position, the first limiting portion 314 is located in the second limiting groove 332, the limiting main body 31 is disengaged from the limiting hole 221, the second elastic member 32 is in a state of restoring elastic deformation, and the locking member 22 can rotate automatically.

[0083] Among them, the depth of the first limiting groove 331 and the depth of the second limiting groove 332 form a stepped positioning reference. When the first limiting portion 314 is embedded in the corresponding limiting groove, the axial position is locked by rigid contact with the groove wall of the corresponding limiting groove.

[0084] It can be understood that in the embodiment of the present invention, by providing the sleeve 33, during the assembly process of the limiting component 30, the limiting main body 31 and the second elastic member 32 can be integrally arranged with the sleeve 33 to form a modular limiting component 30, and then the modular limiting component 30 is integrally installed on the anti-falling main body 10. As an independent replaceable component, the limiting groove is provided on the sleeve 33, localizing the high-wear area, which not only facilitates the quick disassembly, installation and maintenance of the limiting component 30, but also can reduce the maintenance cost of the limiting component 30.

[0085] If the sleeve 33 is not provided, it can be understood that a stepped limiting groove is formed on the outer side wall of the anti-falling main body 10 to serve the function of the sleeve 33. It is equivalent to integrally arranging the structure of the sleeve 33 on the anti-falling main body 10.

[0086] Continue to refer to Figures 2 to 5 In an alternative embodiment of the present invention, the limiting main body 31 includes a shaft body 311 and a limiting end 312. A plug-in portion 316 is formed at the end of the shaft body 311, and the shape of the plug-in portion 316 is adapted to the shape of the limiting hole 221.

[0087] In order to ensure the matching accuracy between the plug-in portion 316 and the limiting hole 221, a guiding structure, such as a conical head, can be provided at the end of the plug-in portion 316, which can be more smoothly matched with the limiting hole 221 during the insertion process.

[0088] The limiting end 312 is detachably connected to the shaft body 311. The shaft body 311 and the limiting end 312 can be connected by threads. That is, the limiting body 31 is composed of the shaft body 311 and the limiting end 312 which are separately arranged. Compared with the above embodiments, in which the shaft body 311 and the limiting end 312 are integrally formed to form the limiting body 31, in this embodiment, the shaft body 311 and the limiting end 312 are separately arranged and connected by threads, which can reduce the processing difficulty.

[0089] Wherein, the first limiting portion 314 is arranged on the outer surface of the limiting end 312, and the first limiting portion 314 extends along the axis of the limiting end 312 in a convex structure. The second limiting portion 315 is arranged at a position of the shaft body 311 close to the insertion portion 316, and the second limiting portion 315 extends along the radial direction of the shaft body 311 in a disc-shaped structure.

[0090] Continue to refer to Figures 2 to 5 , in an alternative embodiment of the present invention, the limiting body 31 further includes a trigger member 313. The trigger member 313 is connected to the limiting end 312 and is used to trigger the movement of the limiting end 312 so as to drive the shaft body 311 to switch between the limiting position and the limiting release position, which is convenient for operating the movement of the limiting body 31.

[0091] Wherein, the trigger member 313 can be a pull ring or a pull rod.

[0092] Equivalently, in the above embodiments without the trigger member 313 provided, the end of the limiting body 31 can be used as the position for triggering.

[0093] In some alternative embodiments of the present invention, there are two first limiting portions 314, and the two first limiting portions 314 are symmetrically arranged with the axis of the limiting end 312 as the axis of symmetry. The numbers of the first limiting groove 331 and the second limiting groove 332 both correspond to the number of the first limiting portions 314.

[0094] With such an arrangement, the first limiting portions 314 are symmetrically distributed with respect to the axis, forming a couple balance system, which decomposes the external load (such as a lateral impact force) into two component forces with equal magnitudes and opposite directions, reducing the bending moment of the limiting body 31 and being able to extend the service life of the limiting body 31. At the same time, the symmetrically arranged first limiting portions 314 are more balanced in operation and have better stability.

[0095] Refer to Figure 5, when the anti - falling self - locking device needs to move horizontally, the trigger 313 is pulled to move, so as to synchronously drive the limit end 312 and the shaft body 311 to move, making the first limit part 314 located in the first limit groove 331. At this time, the insertion part 316 is inserted into the limit hole 221, and cooperates with the limit hole 221 to rigidly lock the locking part 22. The second elastic part 32 is in an elastic deformation state, and the locking part 22 is completely separated from physical contact with the guide rail, eliminating the lateral deflection torque conduction path caused by the change of the operator's position and reducing the abnormal friction loss between the locking part 22 and the guide rail. And after the limit component 30 is inserted into the limit hole 221 on the locking part 22, the rotational freedom of the locking part 22 is forcibly restricted, destroying the natural frequency matching condition of the locking part 22 in the horizontal vibration environment, fundamentally eliminating the resonant jamming phenomenon, enabling the anti - falling self - locking device to smoothly perform horizontal movement, and ensuring that the anti - falling self - locking device can still move smoothly in harsh environments such as strong wind and equipment vibration.

[0096] When the anti - falling self - locking device needs to move vertically, the trigger 313 is pulled to move, so as to synchronously drive the limit end 312 and the shaft body 311 to move, making the first limit part 314 located in the second limit groove 332. At this time, the second elastic part 32 restores the elastic deformation state to drive the limit body 31 out of the limit hole 221, releasing the constraint on the rotational freedom of the locking part 22, and ensuring that the anti - falling self - locking device has the ability of anti - falling and self - locking during vertical movement.

[0097] Figure 8 It is the second structural schematic diagram of the anti - falling self - locking device provided by the embodiment of the present invention.

[0098] Continue to refer to Figure 2 、 Figure 3 and at the same time refer to Figure 8 , in some embodiments of the present invention, the anti - falling self - locking device further includes a guide wheel assembly 50. The guide wheel assembly 50 is arranged on the groove wall of the installation groove 11, and the guide wheel assembly 50 is adapted to roll - contact with the guide rail to reduce the friction force between the anti - falling main body 10 and the guide rail.

[0099] Among them, the guide wheel assembly 50 includes a first guide wheel 51 and a second guide wheel 52. The shapes of the first guide wheel 51 and the second guide wheel 52 can be the same or different.

[0100] When the shapes of the first guide wheel 51 and the second guide wheel 52 are different, the first guide wheel 51 is cylindrical. The first guide wheel 51 is arranged on the two - side groove walls of the installation groove 11, and the axis of the first guide wheel 51 extends along the depth direction of the installation groove 11. The first guide wheel 51 contacts the side surface of the guide rail.

[0101] The longitudinal cross-sectional shape of the second guide wheel 52 is "T"-shaped. The second guide wheel 52 is arranged on the two side walls of the installation groove 11, and is arranged at a certain distance from the first guide wheel 51. The axis of the second guide wheel 52 extends along the depth direction of the installation groove 11. The second guide wheel 52 contacts the side surface and the bottom surface of the guide rail. The second guide wheel 52 is located below the anti-falling self-locking device. When the anti-falling self-locking device moves upward along the guide rail, the first guide wheel 51 and the second guide wheel 52 make the anti-falling self-locking device run smoothly, and at the same time can reduce the wear on the guide rail.

[0102] On the side wall of the installation groove 11, installation positions are provided for both the first guide wheel 51 and the second guide wheel 52. Both the first guide wheel 51 and the second guide wheel 52 are fixed to the corresponding installation positions by screws or guide rods.

[0103] Further, the guide wheel assembly 50 further includes a third guide wheel 53. The axis of the third guide wheel 53 extends along the width direction of the installation groove 11. The third guide wheel 53 is arranged on the top wall of the installation groove 11. The positions of the third guide wheel 53 correspond to the positions of the first guide wheel 51 and the second guide wheel 52 respectively to form a stable three-point contact structure. The three-point contact guide wheel assembly structure can improve the stability of the anti-falling self-locking device running on the guide rail, and reduce shaking and vibration. When the anti-falling self-locking device is installed on a vertical or inclined guide rail, the guide wheel assembly can effectively prevent the anti-falling self-locking device from shifting or disengaging from the guide rail due to its own gravity or external interference.

[0104] When the anti-falling self-locking device moves up and down along the guide rail normally, the first guide wheel 51, the second guide wheel 52 and the third guide wheel 53 are in rolling contact with the guide rail at the same time, providing an accurate path guidance for the up and down movement of the anti-falling self-locking device, and ensuring that the locking assembly 20 can play a locking role in the working position.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fall-prevention self-locking device, characterized in that, Comprising: A falling prevention main body, provided with a mounting groove and a receiving groove, the mounting groove and the receiving groove being in communication with each other, the mounting groove being adapted to be connected to a guide rail, and a mating portion being provided on the groove wall of the receiving groove; A locking assembly, including: A pivot shaft, passing through the falling prevention main body and located in the receiving groove; A locking member, provided on the pivot shaft and rotatably engaged with the pivot shaft; A first elastic member, sleeved on the pivot shaft, one end of the first elastic member being connected to the locking member, and the other end of the first elastic member being connected to the falling prevention main body; An anti-inversion member, movably provided on the locking member; Wherein, when the falling prevention main body is in an inverted state, the locking member extends from the receiving groove into the mounting groove, and the anti-inversion member extends out of the locking member under the action of gravity and cooperates with the mating portion for limiting, so as to limit the connection between the falling prevention main body and the guide rail.

2. The anti-falling self-locking device according to claim 1, wherein The anti-inversion member includes: A limiting section; A plugging section, connected to the limiting section, and the cross-sectional area of the plugging section being smaller than the cross-sectional area of the limiting section; Wherein, a receiving cavity is provided on the locking member, a limiting step is provided on the inner wall of the receiving cavity, and both the limiting section and the plugging section are located in the receiving cavity; when the falling prevention main body is in an inverted state, the plugging section extends out of the locking member and cooperates with the mating portion for limiting, and the limiting section abuts against the limiting step.

3. The anti-falling self-locking device according to claim 2, characterized in that, The following is provided on the limiting section: A limiting plane, the limiting plane being parallel to the axis of the limiting section; Wherein, an opening is provided on the side wall of the locking member, the opening being in communication with the receiving cavity, and the limiting section and the plugging section enter the receiving cavity from the opening.

4. The anti-falling self-locking device according to claim 3, characterized in that, The cross-sectional shape of the limiting section is a bow shape, the bow shape being a planar region surrounded by an arc and a corresponding chord, and the chord height of the bow shape being greater than the radius of the bow shape; Wherein, the width of the opening is greater than or equal to the chord height of the bow shape and less than the diameter of the bow shape.

5. The anti-falling self-locking device according to claim 1, characterized in that, The following is provided on the falling prevention main body: An identification portion, the indicating direction of the identification portion being consistent with the correct installation direction of the falling prevention main body.

6. The anti-falling self-locking device according to any one of claims 1 to 5, characterized in that, Further comprising: A limiting assembly, movably provided on the falling prevention main body and adapted to switch between a limiting position and a limiting release position; Wherein, a limiting hole is provided on the locking member, in the limiting position, the limiting assembly is inserted into the limiting hole for restricting the rotation of the locking member, so that the locking member is completely disengaged from physical contact with the guide rail; in the limiting release position, the limiting assembly is disengaged from the limiting hole, and the locking member can rotate freely.

7. The anti-falling self-locking device according to claim 6, characterized in that, The limiting assembly includes: A limiting main body, passing through the falling prevention main body and adapted to switch between a limiting position and a limiting release position; first limiting portions and second limiting portions are respectively provided at positions of the limiting main body close to both ends; A second elastic member, sleeved on the limiting main body, and both ends of the second elastic member respectively abutting against the first limiting portion and the second limiting portion; Wherein, at the limiting position, the limiting main body is inserted into the limiting hole, and the second elastic member is in an elastically deformed state; at the limiting release position, the limiting main body is disengaged from the limiting hole, and the second elastic member is in a state of restoring elastic deformation.

8. The anti-falling self-locking device according to claim 7, characterized in that, The limiting assembly further includes: A sleeve detachably connected to the anti-falling main body. The sleeve is provided with a first limiting groove and a second limiting groove at intervals. Both the first limiting groove and the second limiting groove extend along the axial direction of the sleeve, and the depth of the first limiting groove is greater than the depth of the second limiting groove; Wherein, at the limiting position, the first limiting portion is located in the first limiting groove; at the limiting release position, the first limiting portion is located in the second limiting groove.

9. The anti-falling self-locking device according to claim 8, characterized in that, The limiting main body includes: A shaft body, with a plugging portion formed at the end. The shape of the plugging portion is adapted to the shape of the limiting hole; A limiting end head detachably connected to the shaft body; Wherein, the first limiting portion is provided on the outer surface of the limiting end head and extends along the axis of the limiting end head; the second limiting portion is provided at a position of the shaft body close to the plugging portion and extends along the radial direction of the shaft body.

10. The anti-falling self-locking device according to claim 9, wherein, The limiting main body further includes: A trigger member connected to the limiting end head for triggering the movement of the limiting end head to drive the shaft body to switch between the limiting position and the limiting release position.

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