Tower fall protection device

Abstract

The application provides an iron tower anti-falling device, and belongs to the technical field of high-altitude operation protection devices.The iron tower anti-falling device comprises a guide rail and a self-locker body which is slidably connected to the guide rail, a rack is fixed on both sides of the guide rail along the length direction of the guide rail, at least two gears are rotatably connected to both sides of the self-locker body, and the gears are meshed with the racks on the corresponding sides; a one-way rotation mechanism is arranged on the self-locker body and is used for limiting the one-way rotation of each gear; when the one-way rotation mechanism limits the gears, the self-locker body can only slide upwards on the guide rail; and a manual unlocking mechanism is arranged on the self-locker body and is used for unlocking the limitation of the one-way rotation mechanism on the gears. Through the cooperation of the rack and the gear and the limitation of the one-way rotation mechanism on each gear, when an operator slides the self-locker body upwards to an arbitrary position, the self-locker body cannot slide downwards relative to the guide rail, the safety of the anti-falling device is improved, the safety of the operator is improved, and the panic caused by falling is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of high-altitude operation protection devices, and more specifically, relates to a tower fall prevention device. Background Technology

[0002] Fall arrestors are protective devices designed to keep workers safely suspended in the air in the event of a fall while climbing, moving, or working on a high-altitude tower.

[0003] Current fall arrest devices include guide rails and self-locking devices. The guide rails are fixed to the tower, and the self-locking devices are slidably connected to the guide rails. The self-locking devices have a retractable buckle inside. When the user moves up and down for normal operation, the buckle inside the self-locking device retracts, allowing it to slide freely in the guide rail. When the user accidentally falls, the buckle inside the self-locking device can extend and lock onto the rail surface. Due to gravity, the friction between the buckle and the guide rail surface locks the user in place, thus providing fall protection.

[0004] When a worker falls on the vertical guide rail while using the self-locking device, the self-locking device will only lock after the worker has already started falling, resulting in insufficient safety of the fall protection device and increasing the worker's panic. Summary of the Invention

[0005] The purpose of this invention is to provide a tower fall protection device to solve the technical problem that existing fall protection devices are not safe enough, which increases the panic of workers.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A tower fall arrestor is provided, comprising a guide rail and a self-locking device body slidably connected to the guide rail. Racks are fixed along the length of both sides of the guide rail. At least two gears are rotatably connected to each side of the self-locking device body, and each gear meshes with the rack on the corresponding side. The self-locking device body is provided with a unidirectional rotation mechanism that restricts the rotation of each gear in one direction. When the unidirectional rotation mechanism restricts the gear, the self-locking device body can only slide upwards on the guide rail. The self-locking device body is provided with a manual unlocking mechanism for releasing the restriction of the gear by the unidirectional rotation mechanism.

[0007] In one possible implementation, based on the above technical solutions, the unidirectional rotation mechanism includes a shaft, a ratchet, a moving shaft, a pawl, and a posture holding assembly. The shaft is rotatably connected inside the self-locking device body. The gear and the ratchet are coaxially fixed on the corresponding shaft. The moving shaft is slidably connected inside the self-locking device body, and the axis and direction of movement of the moving shaft are parallel to the axis of the shaft. The pawl is rotatably connected to the moving shaft and meshes with the ratchet. The manual unlocking mechanism is used to separate the ratchet and the pawl. The posture holding assembly is used to keep the angle of the pawl unchanged when the pawl is separated from the ratchet.

[0008] In one possible implementation, based on the above technical solutions, the end face of the pawl used to insert into the ratchet is set with a pointed tip.

[0009] In one possible implementation, based on the above technical solutions, the attitude holding component includes a connecting frame and a connecting spring. The connecting frame is fixed on the moving shaft, and the connecting spring is disposed between the connecting frame and the pawl. When the pawl engages with the ratchet, the connecting spring is in its natural state.

[0010] In one possible implementation, based on the above technical solutions, the manual unlocking mechanism includes a sliding frame and a positioning component. The sliding frame is slidably fitted onto the self-locking device body, and the ends of all the moving shafts protrude from the self-locking device body and are fixed to the sliding frame. After the sliding frame drives all the moving shafts to move so that all the pawls are completely separated from the ratchet, the positioning component is used to fix the position of the sliding frame.

[0011] In one possible implementation, based on the above technical solutions, the positioning component includes a pressing post and an anti-accidental contact connection part. The pressing post is disposed on the sliding frame, and the self-locking device body has a slot for inserting the pressing post. The anti-accidental contact connection part is disposed between the pressing post and the slot. After the pressing post is inserted into the slot, it is connected and positioned through the anti-accidental contact connection part.

[0012] In one possible implementation, based on the above technical solutions, the anti-accidental contact connection includes an internal thread and an external thread. The internal thread is disposed on the outer circumferential surface of the pressing post, and the external thread is disposed on the inner sidewall of the bottom of the slot. The pressing post is rotatably connected to the sliding frame.

[0013] In one possible implementation, in conjunction with the above technical solutions, the positioning component further includes a reset spring and a mounting plate. The reset spring is disposed in the slot, and the mounting plate is connected to the outer end of the reset spring and abuts against the end face of the pressing post.

[0014] In one possible implementation, based on the above technical solutions, when the internal thread and the external thread are initially connected, the ratchet and the pawl are in a state of incomplete separation.

[0015] In one possible implementation, based on the above technical solutions, a telescopic rod is provided between the inner side of the patch and the bottom wall of the slot.

[0016] The beneficial effects of the iron tower fall arrest device provided by this invention are as follows: Compared with the prior art, this invention, through the cooperation of rack and pinion, makes the self-locking device body slide more stably upward on the guide rail. At this time, the gear moves on the rack, and due to the restriction of each gear by the one-way rotation mechanism, the gear cannot reverse under normal circumstances, and therefore cannot move downward on the rack. When the operator slides the self-locking device body upward to any position, the self-locking device body cannot slide downward relative to the guide rail, which improves the safety of the fall arrest device and the safety of the operator, and reduces the panic caused by a fall. When it is necessary to slide the self-locking device body downward, the restriction of the one-way rotation mechanism on the gear can be released by the manual unlocking mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side view of the iron tower fall protection device provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the iron tower fall protection device provided in an embodiment of the present invention;

[0020] Figure 3 A vertical sectional view of the unidirectional rotation mechanism provided in an embodiment of the present invention;

[0021] Figure 4 A cross-sectional view of the tip of the pawl provided in an embodiment of the present invention;

[0022] Figure 5 for Figure 2 A partially enlarged schematic diagram of the anti-accidental touch connection provided in Part A.

[0023] The labels for the attached figures are as follows:

[0024] 1. Guide rail; 11. Rack; 2. Self-locking device body; 21. Gear; 22. Slot; 3. One-way rotation mechanism; 31. Shaft; 32. Ratchet; 33. Moving shaft; 34. Pawl; 35. Posture holding assembly; 351. Connecting frame; 352. Connecting spring; 4. Manual unlocking mechanism; 41. Sliding frame; 411. Front frame plate; 412. Side frame plate; 413. Rear frame plate; 42. Positioning assembly; 421. Pressing post; 4211. Rotating plate; 422. Anti-accidental contact connection part; 4221. Internal thread part; 4222. External thread part; 423. Return spring; 424. Plate; 425. Telescopic rod. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, etc., may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0027] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0031] The iron tower anti-fall device provided by the present invention will now be described.

[0032] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a tower fall arrest device, including a guide rail 1 and a self-locking device body 2 slidably connected to the guide rail 1. Racks 11 are fixed along the length of both sides of the guide rail 1. At least two gears 21 are rotatably connected to each side of the self-locking device body 2, and each gear 21 meshes with the rack 11 on the corresponding side. The self-locking device body 2 is provided with a one-way rotation mechanism 3 that restricts the rotation of each gear 21 in one direction. When the one-way rotation mechanism 3 restricts the gear 21, the self-locking device body 2 can only slide upwards on the guide rail 1. The self-locking device body 2 is provided with a manual unlocking mechanism 4 for releasing the restriction of the one-way rotation mechanism 3 on the gear 21.

[0033] Compared with the prior art, the tower fall arrestor provided in this embodiment makes the self-locking device body 2 slide more stably on the guide rail 1 through the cooperation of rack 11 and gear 21. At this time, the gear 21 moves on rack 11. Due to the restriction of each gear 21 by the one-way rotation mechanism 3, the gear 21 cannot reverse under normal circumstances, and therefore cannot move downward on rack 11. When the operator slides the self-locking device body 2 upward to any position, the self-locking device body 2 cannot slide downward relative to the guide rail 1, which improves the safety of the fall arrestor and the safety of the operator, and reduces the panic caused by a fall. When it is necessary to slide the self-locking device body 2 downward, the restriction of the one-way rotation mechanism 3 on the gear 21 can be released by the manual unlocking mechanism 4.

[0034] like Figures 2 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0035] The one-way rotation mechanism 3 includes a shaft 31, a ratchet 32, a moving shaft 33, a pawl 34, and an attitude holding assembly 35. The shaft 31 is rotatably connected inside the self-locking device body 2. The gear 21 and the ratchet 32 ​​are coaxially fixed on the corresponding shaft 31. The moving shaft 33 is slidably connected inside the self-locking device body 2. The axis and direction of movement of the moving shaft 33 are parallel to the axis of the shaft 31. The pawl 34 is rotatably connected to the moving shaft 33 and meshes with the ratchet 32. The manual unlocking mechanism 4 is used to separate the ratchet 32 ​​and the pawl 34. The attitude holding assembly 35 is used to keep the angle of the pawl 34 unchanged when the pawl 34 is separated from the ratchet 32.

[0036] When the self-locking device body 2 slides upward on the guide rail 1, the gear 21 drives the ratchet 32 ​​to rotate through the shaft 31. The ratchet 32 ​​and the pawl 34 are engaged. When the gear 21 tends to move downward, the pawl 34 restricts the ratchet 32, thus preventing the gear 21 from moving downward and improving the upward stability of the self-locking device body 2.

[0037] When the self-locking device body 2 needs to descend, the pawl 34 can be separated from the ratchet 32 ​​by the manual unlocking mechanism 4. At this time, the attitude holding component 35 keeps the pawl 34 at the angle when it is separated from the ratchet 32, so that the pawl 34 can re-engage with the ratchet 32 ​​after the self-locking device body 2 has descended.

[0038] like Figures 3 to 4 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0039] The end face of the pawl 34, which is used to insert into the ratchet 32, is set with a pointed end.

[0040] This makes it easier for the pawl 34 to re-engage with the ratchet 32 ​​after separation, thus improving ease of operation.

[0041] like Figures 2 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0042] The attitude holding assembly 35 includes a connecting frame 351 and a connecting spring 352. The connecting frame 351 is fixed on the moving shaft 33, and the connecting spring 352 is disposed between the connecting frame 351 and the pawl 34. When the pawl 34 is engaged with the ratchet 32, the connecting spring 352 is in its natural state.

[0043] When gear 21 moves upwards, it drives ratchet 32 ​​to rotate via shaft 31. Ratchet 32 ​​then drives pawl 34 to rotate repeatedly. Connecting spring 352 extends and retracts with the rotation of pawl 34, improving the meshing stability between pawl 34 and ratchet 32. When moving shaft 33 causes pawl 34 to disengage from ratchet 32, connecting spring 352 keeps pawl 34 stable, improving the ease of subsequent re-engagement of pawl 34 with ratchet 32.

[0044] like Figure 2 and Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0045] The manual unlocking mechanism 4 includes a sliding frame 41 and a positioning component 42. The sliding frame 41 is slidably fitted onto the self-locking body 2. The ends of all moving shafts 33 protrude from the self-locking body 2 and are fixed to the sliding frame 41. After the sliding frame 41 drives all moving shafts 33 to move so that all pawls 34 are separated from the ratchet 32, the positioning component 42 is used to fix the position of the sliding frame 41.

[0046] When the self-locking device body 2 needs to slide down, push the sliding frame 41 to drive all the moving shafts 33 to move. The moving shafts 33 drive the corresponding pawls 34 to separate from the ratchet 32. Then, the positioning component 42 fixes the position of the sliding frame 41, thus maintaining the self-locking device body 2 in a state where it can slide down on the guide rail 1, improving the ease of operation.

[0047] like Figures 2 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0048] The sliding frame 41 includes a front frame plate 411, a side frame plate 412, and a rear frame plate 413. The front frame plate 411 is located on the front side of the self-locking device body 2, and there is a distance between the front frame plate 411 and the front surface of the self-locking device body 2. The positioning component 42 is located between the front frame plate 411 and the self-locking device body 2. The side frame plates 412 are located on both sides of the self-locking device body 2 and are fixed to the front frame plate 411. The rear frame plate 413 is located on the rear side of the self-locking device body 2 and is fixed to the side frame plate 412. The moving shaft 33 is fixed to the corresponding rear frame plate 413.

[0049] The side frame plates 412 on both sides can guide the sliding between the sliding frame 41 and the self-locking body 2. By moving and fixing the front frame plate 411, the movement and position fixing of all moving axes 33 can be achieved through the side frame plates 412 and the rear frame plate 413, which improves the operating efficiency.

[0050] like Figure 2 and Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0051] The positioning component 42 includes a pressing post 421 and an anti-accidental contact connection part 422. The pressing post 421 is disposed on the sliding frame 41. The self-locking device body 2 has a slot 22 for inserting the pressing post 421. The anti-accidental contact connection part 422 is disposed between the pressing post 421 and the slot 22. After the pressing post 421 is inserted into the slot 22, it is connected and positioned by the anti-accidental contact connection part 422.

[0052] When the self-locking device body 2 needs to slide down, the pressing post 421 is pressed to insert it into the slot 22. The pressing post 421 drives the sliding frame 41 to slide. The sliding frame 41 drives the pawl 34 to separate from the ratchet 32 ​​through all the moving shafts 33. Then, the anti-accidental contact connection part 422 fixes one end of the pressing post 421 into the slot 22, keeping the pawl 34 and the ratchet 32 ​​separated, making the operation more convenient.

[0053] Furthermore, a rotating plate 4211 is fixed to the outer end of the pressing column 421 so that the operator can apply force to rotate the pressing column 421.

[0054] like Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0055] The anti-accidental contact connection part 422 includes an internal thread part 4221 and an external thread part 4222. The internal thread part 4221 is provided on the outer peripheral surface of the pressing post 421, and the external thread part 4222 is provided on the inner side wall of the bottom of the slot 22. The pressing post 421 is rotatably connected to the sliding frame 41.

[0056] The internal thread 4221 and the external thread 4222 make the pressing post 421 and the bottom of the slot 22 threaded together. Pressing the pressing post 421 and then rotating it makes the bottom end of the pressing post 421 threadedly connected to the bottom of the slot 22, which improves the convenience of positioning and releasing the pressing post 421.

[0057] like Figure 2 and Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0058] The positioning assembly 42 also includes a reset spring 423 and a mounting plate 424. The reset spring 423 is disposed in the slot 22, and the mounting plate 424 is connected to the outer end of the reset spring 423 and is attached to the end face of the pressing post 421.

[0059] Furthermore, the return spring 423 is always in a compressed state. When the pressing post 421 has not entered the slot 22 and the pawl 34 is engaged with the ratchet 32, the top surface of the plate 424 presses the pressing post 421 outward.

[0060] When the pressing post 421 is pressed and inserted into the slot 22, the return spring 423 is compressed; when the pressing post 421 is rotated in the opposite direction to disengage it from the slot 22, the rebound force of the return spring 423 pushes the plate 424 outward to push the pressing post 421, which improves the ease of operation when separating and re-engaging the ratchet 32 ​​and the pawl 34.

[0061] like Figure 2 and Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0062] When the internal threaded portion 4221 and the external threaded portion 4222 are initially connected, the ratchet 32 ​​and the pawl 34 are not completely separated.

[0063] Firstly, when the pressing column 421 is inserted into the slot 22 but has not yet rotated, the ratchet 32 ​​and the pawl 34 are still engaged, which realizes the anti-accidental contact function of the manual unlocking mechanism 4 and avoids the phenomenon that the pawl 34 and the ratchet 32 ​​will separate due to accidental contact of the pressing column 421, thereby further improving the safety of high-altitude operations.

[0064] Secondly, when the internal thread 4221 and the external thread 4222 are connected by threads, the ratchet 32 ​​and the pawl 34 are still engaged. At this time, the self-locking device body 2 cannot slide down relative to the guide rail 1. Therefore, when the operator manually turns the pressing column 421 to connect it with the bottom thread of the slot 22, the direction of the rotation force can be tilted downward to gain leverage. When the pressing column 421 is turned, the self-locking device body 2 remains stable and does not move. This avoids the phenomenon of the self-locking device body 2 sliding up and down when the pressing column 421 is turned with force, thereby improving the ease of operation of the manual unlocking mechanism 4.

[0065] like Figure 2 and Figure 5 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:

[0066] A telescopic rod 425 is provided between the inner side of the mounting plate 424 and the bottom wall of the slot 22. The telescopic rod 425 is located inside the return spring 423. The telescopic rod 425 can guide the extension and retraction of the return spring 423 and improve the movement stability of the mounting plate 424.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A fall arrestor for iron towers, characterized in that, The device includes a guide rail (1) and a self-locking body (2) slidably connected to the guide rail (1). Racks (11) are fixed on both sides of the guide rail (1) along its length. At least two gears (21) are rotatably connected to each side of the self-locking body (2). Each gear (21) meshes with the rack (11) on the corresponding side. The self-locking body (2) is provided with a one-way rotation mechanism (3) that restricts the rotation of each gear (21) in one direction. When the one-way rotation mechanism (3) restricts the gear (21), the self-locking body (2) can only slide upward on the guide rail (1). The self-locking body (2) is provided with a manual unlocking mechanism (4) for releasing the restriction of the one-way rotation mechanism (3) on the gear (21). The one-way rotation mechanism (3) includes a shaft (31), a ratchet (32), a moving shaft (33), a pawl (34), and a posture holding assembly (35). The shaft (31) is rotatably connected inside the self-locking device body (2). The gear (21) and the ratchet (32) are coaxially fixed on the corresponding shaft (31). The moving shaft (33) is slidably connected inside the self-locking device body (2). The axis and direction of movement of the moving shaft (33) are parallel to the axis of the shaft (31). The pawl (34) is rotatably connected to the moving shaft (33) and meshes with the ratchet (32). The manual unlocking mechanism (4) is used to separate the ratchet (32) and the pawl (34). The posture holding assembly (35) is used to keep the angle of the pawl (34) unchanged when the pawl (34) is separated from the ratchet (32). The manual unlocking mechanism (4) includes a sliding frame (41) and a positioning component (42). The sliding frame (41) is slidably mounted on the self-locking body (2). The ends of all the moving shafts (33) protrude from the self-locking body (2) and are fixed to the sliding frame (41). After the sliding frame (41) drives all the moving shafts (33) to move so that all the pawls (34) are separated from the ratchet (32), the positioning component (42) is used to fix the position of the sliding frame (41).

2. The iron tower fall prevention device as described in claim 1, characterized in that, The end face of the pawl (34) for inserting into the ratchet (32) is set with a pointed end.

3. The iron tower fall prevention device as described in claim 1, characterized in that, The attitude holding assembly (35) includes a connecting frame (351) and a connecting spring (352). The connecting frame (351) is fixed on the moving shaft (33), and the connecting spring (352) is disposed between the connecting frame (351) and the pawl (34). When the pawl (34) is engaged with the ratchet (32), the connecting spring (352) is in its natural state.

4. The iron tower fall prevention device as described in claim 1, characterized in that, The positioning component (42) includes a pressing post (421) and an anti-accidental contact connection part (422). The pressing post (421) is disposed on the sliding frame (41). The self-locking device body (2) has a slot (22) for the pressing post (421) to be inserted. The anti-accidental contact connection part (422) is disposed between the pressing post (421) and the slot (22). After the pressing post (421) is inserted into the slot (22), it is connected and positioned through the anti-accidental contact connection part (422).

5. The iron tower fall prevention device as described in claim 4, characterized in that, The anti-accidental contact connection part (422) includes an internal thread part (4221) and an external thread part (4222). The internal thread part (4221) is disposed on the outer peripheral surface of the pressing post (421), and the external thread part (4222) is disposed on the inner side wall of the bottom of the slot (22). The pressing post (421) is rotatably connected to the sliding frame (41).

6. The iron tower fall prevention device as described in claim 5, characterized in that, The positioning component (42) further includes a reset spring (423) and a mounting plate (424). The reset spring (423) is disposed in the slot (22), and the mounting plate (424) is connected to the outer end of the reset spring (423) and is attached to the end face of the pressing post (421).

7. The iron tower fall prevention device as described in claim 5, characterized in that, When the internal threaded portion (4221) and the external threaded portion (4222) are initially connected, the ratchet (32) and the pawl (34) are in a state of incomplete separation.

8. The iron tower fall protection device as described in claim 6, characterized in that, A telescopic rod (425) is provided between the inner side of the plate (424) and the bottom wall of the slot (22).

Images