Anti-torsion fixing device for circular tube ladder stand

Abstract

The utility model belongs to the technical field of steel tube towers, and provides a round tube ladder stand anti-torsion fixing device which comprises a ladder stand body, connecting lug plates, fasteners and falling protector guide rails. Wherein a clamping part protrudes from the surface of the crawling ladder main body; clamping grooves matched with the clamping parts are formed in the connecting lug plates, and the clamping parts extend into the clamping grooves and abut against the side walls of the clamping grooves in the circumferential direction of the crawling ladder body; the fastener is wound on the ladder stand main body and connected with the connecting lug plate, and the connecting lug plate abuts against the ladder stand main body through the fastener; and the falling protector guide rail is connected to the connecting lug plate.

Description

Technical Field

[0001] The present application belongs to the technical field of steel tube towers, and more specifically, relates to a fixing device for preventing a circular tube ladder from twisting. Background Art

[0002] As an important industrial facility, steel pipe towers are widely used in the fields of electricity, communications, radio and television, and undertake the important task of supporting key equipment such as cables and antennas. During the maintenance and inspection of steel pipe towers, ladders are key facilities for people to go up and down, and their safety and stability are of vital importance. For safety reasons, existing ladders are generally equipped with fall arrester rails, but the main body of the ladder is generally a round tube structure. Due to the unreasonable design of the connection structure between the existing fall arrester rail and the ladder main body, the fall arrester rail often twists relative to the ladder main body, posing a greater threat to the safety of workers; therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a fixing device for preventing a circular tube ladder from twisting, so as to solve the technical problem in the prior art that the guide rail of the fall arrester is easily twisted relative to the ladder body.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a fixing device for preventing a circular tube ladder from twisting, comprising:

[0005] The main body of the ladder has a protruding clamping portion on the surface;

[0006] A connecting ear plate is formed to form a slot adapted to the clamping portion, wherein the clamping portion extends into the slot and abuts against a side wall of the slot in the circumferential direction of the ladder body;

[0007] A fastener, which is wound around the ladder body and connected to the connecting ear plate, and the connecting ear plate is fastened to the ladder body through the fastener;

[0008] The fall arrester guide rail is connected to the connecting ear plate.

[0009] Optionally, the clamping portion extends radially along the ladder body.

[0010] Optionally, the slot passes through the connecting ear plate along the thickness direction of the connecting ear plate.

[0011] Optionally, the edge of the connecting ear plate is recessed to form the open card slot, and the opening of the card slot faces the bottom of the ladder body and can allow the clamping portion to pass through.

[0012] Optionally, a side wall of the clamping groove opposite to the opening is adapted to a cross-sectional shape of the clamping portion.

[0013] Optionally, lugs are extended outwardly from the edge of the connecting ear plate and are arranged at intervals, and the slot is formed between two adjacent lugs.

[0014] Optionally, the cross-section of the lug in the opening direction of the slot gradually decreases.

[0015] Optionally, a foot bar for climbing and serving as the clamping portion is connected to the ladder body.

[0016] Optionally, the connecting ear plates and the fasteners are evenly arranged in multiple groups along the axial direction of the ladder body.

[0017] Optionally, the fastener is a U-bolt.

[0018] The beneficial effect of the anti-twist fixing device for the round tube ladder provided by the present application is that: compared with the prior art, in the anti-twist fixing device for the round tube ladder provided by the present application, a clamping portion is raised on the surface of the ladder body, and the connecting ear plate forms a clamping groove adapted to the clamping portion, and after the clamping portion extends into the clamping groove, it can abut against the side wall of the clamping groove in the circumferential direction of the ladder body, so that the connecting ear plate cannot move relative to the ladder body along the circumferential direction of the ladder body. When the connecting ear plate is tightened against the ladder body by a fastener and the fall arrester guide rail is connected to the connecting ear plate, the fall arrester guide rail cannot be twisted relative to the ladder body, which significantly improves the installation stability of the fall arrester guide rail and improves the construction safety, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 The overall structure of the anti-twist fixing device for the circular tube ladder provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0021] Figure 2 for Figure 1 A magnified view of the structure at center;

[0022] Figure 3 The overall structure of the anti-twist fixing device for the circular tube ladder provided in the embodiment of the present application is schematically shown. Figure 2 .

[0023] Among them, the reference numerals in the figure are: 101, ladder body; 102, clamping part; 103, connecting ear plate; 104, clamping groove; 105, fastener; 106, fall arrester guide rail; 107, lug; 108, foot lever. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] Please also read Figures 1 to 3 , a fixing device for preventing a round tube ladder from twisting provided in an embodiment of the present application is now described. The fixing device for preventing a round tube ladder from twisting comprises a ladder body 101, a connecting ear plate 103, a fastener 105 and a fall arrester guide rail 106. Among them:

[0029] A clamping portion 102 is raised on the surface of the ladder body 101, and a connecting ear plate 103 forms a clamping groove 104 adapted to the clamping portion 102. The clamping portion 102 extends into the clamping groove 104 and abuts against the side wall of the clamping groove 104 in the circumferential direction of the ladder body 101. A fastener 105 is wrapped around the ladder body 101 and connected to the connecting ear plate 103. The connecting ear plate 103 is pressed against the ladder body 101 through the fastener 105, and the fall arrester guide rail 106 is connected to the connecting ear plate 103.

[0030] According to the above structure provided in this embodiment, in the anti-twist fixing device of the circular tube ladder provided in this embodiment, a clamping portion 102 is protruded on the surface of the ladder body 101, and the connecting ear plate 103 forms a clamping groove 104 adapted to the clamping portion 102. After the clamping portion 102 extends into the clamping groove 104, it can abut against the side wall of the clamping groove 104 in the circumferential direction of the ladder body 101, so that the connecting ear plate cannot move relative to the ladder body 101 along the circumferential direction of the ladder body 101. When the connecting ear plate is pressed against the ladder body 101 by the fastener 105 and the fall arrester guide rail 106 is connected to the connecting ear plate 103, the fall arrester guide rail 106 cannot be twisted relative to the ladder body 101, thereby significantly improving the installation stability of the fall arrester guide rail 106 and improving the construction safety, which is far superior to the prior art.

[0031] What needs to be noted during the actual processing and production process is that, since the connecting ear plate in this embodiment limits the torsion of the fall arrester guide rail 106 relative to the ladder body 101, due to the action of the bottom of the slot 104, the connecting ear plate can also prevent the fall arrester guide rail 106 from moving downward axially relative to the ladder body 101, that is, in addition to the locking effect of the fastener 105 on the ladder body 101, through the action of the bottom of the slot 104 and the clamping portion 102, the clamping portion 102 can also bear the downward axial force generated by the fall arrester guide rail 106, thereby realizing axial support for the fall arrester guide rail 106.

[0032] In another embodiment of the present application, please refer to Figures 1 to 3 , the clamping portion 102 extends radially along the ladder body 101. According to the above structure provided in this embodiment, the clamping portion 102 extending radially along the ladder body 101 can be more stably connected to the ladder body 101, so that the clamping portion 102 can better extend into the clamping slot 104 and abut against the side wall of the clamping slot 104, which has a further anti-twist effect.

[0033] In another embodiment of the present application, please refer to Figures 1 to 3 The slot 104 penetrates the connecting ear plate 103 along the thickness direction of the connecting ear plate 103. According to the above structure provided in this embodiment, on the one hand, it is convenient to process the slot 104 on the connecting ear plate 103; on the other hand, when the clamping portion 102 extends into the slot 104, it can be perpendicular to the connecting ear plate 103, so that the clamping portion 102 can bear a larger twisting load and has a further anti-twist effect.

[0034] In another embodiment of the present application, please refer to Figures 1 to 3, the edge of the connecting ear plate 103 is sunken to form an open slot 104, the opening of the slot 104 faces the bottom of the ladder body 101 and can allow the clamping part 102 to pass through. According to the above structure provided in this embodiment, the open slot 104 is conducive to the clamping part 102 extending into the slot 104, improving the convenience of installation and removal of the clamping part 102; on the other hand, since the opening of the slot 104 faces the bottom of the ladder body 101, when the clamping part 102 is installed in place in the slot 104, the clamping part 102 can also be used to limit the connection ear plate 103 from falling along the axial direction of the ladder body 101.

[0035] In another embodiment of the present application, please refer to Figures 1 to 3 The side wall of the slot 104 opposite to the opening is adapted to the cross-sectional shape of the clamping portion 102. According to the above structure provided in this embodiment, the slot 104 can form a larger abutment area with the clamping portion 102, which has a further anti-twist effect.

[0036] In another embodiment of the present application, please refer to Figures 1 to 3 , lugs 107 are arranged at intervals and extend outward from the edge of the connecting ear plate 103, and the clamping groove 104 is formed between two adjacent lugs 107. According to the above structure provided in this embodiment, the provision of the lugs 107 is conducive to forming a longer disengagement path of the clamping portion 102, thereby effectively preventing the two from disengaging during use; on the other hand, it is also conducive to reducing the difficulty of processing the clamping groove 104 and can reduce the materials used in preparing the connecting ear plate 103, which has the beneficial effect of reducing production costs.

[0037] In another embodiment of the present application, please refer to Figures 1 to 3 , the cross section of the lug 107 gradually decreases in the direction of the opening of the slot 104. According to the above structure provided in this embodiment, since the clamping portion 102 abuts against the root of the slot 104, the lug 107 adopts the above structure, which can not only well ensure its own mechanical strength to meet the need of anti-twist, but also help to further reduce the production cost of the connecting ear plate 103.

[0038] In another embodiment of the present application, please refer to Figures 1 to 3 , the ladder body 101 is connected with a pedal rod 108 for climbing and serving as a clamping portion 102. According to the above structure provided in this embodiment, since the ladder body 101 must be provided with a pedal rod 108 for the operator to climb, using the pedal rod 108 as the clamping portion 102 can avoid re-arranging a separate clamping portion 102 outside the pedal rod 108, which is conducive to further reducing the production cost of the anti-twist fixing device of the round tube ladder in this embodiment.

[0039] In another embodiment of the present application, please refer to Figures 1 to 3 , multiple groups of connecting ear plates 103 and fasteners 105 are evenly arranged along the axial direction of the ladder body 101. According to the above structure provided in this embodiment, multiple groups of connecting ear plates 103 and fasteners 105 can work together to prevent the anti-fall device guide rail 106 from twisting, which has a further anti-twist effect.

[0040] In another embodiment of the present application, please refer to Figures 1 to 3 According to the structure provided in this embodiment, the fastener 105 is a U-shaped bolt, which can improve the installation stability of the connecting ear plate 103 on the one hand, and can also make the connecting ear plate 103 quickly installed and disassembled on the other hand, and has a flexible use effect.

[0041] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fixing device for preventing a circular tube ladder from twisting, characterized in that: include: The ladder body (101) has a protruding clamping portion (102) on its surface; The ear plates (103) are connected to form a slot (104) adapted to the clamping portion (102); the clamping portion (102) extends into the slot (104) and abuts against a side wall of the slot (104) in the circumferential direction of the ladder body (101); A fastener (105) is wound around the ladder body (101) and connected to the connecting ear plate (103); the connecting ear plate (103) is fastened to the ladder body (101) via the fastener (105); The fall arrester guide rail (106) is connected to the connecting ear plate (103).

2. The anti-twist fixing device for a round tube ladder according to claim 1, characterized in that: The clamping portion (102) extends radially of the ladder body (101).

3. The anti-twist fixing device for a round tube ladder according to claim 2, characterized in that: The clamping groove (104) penetrates the connecting ear plate (103) along the thickness direction of the connecting ear plate (103).

4. The anti-twist fixing device for a round tube ladder according to claim 3, characterized in that: The edge of the connecting ear plate (103) is recessed to form the open clamping groove (104); the opening of the clamping groove (104) faces the bottom of the ladder body (101) and is capable of allowing the clamping portion (102) to pass through.

5. The anti-twist fixing device for a round tube ladder according to claim 4, characterized in that: The side wall of the clamping groove (104) opposite to the opening is adapted to the cross-sectional shape of the clamping portion (102).

6. The anti-twist fixing device for a round tube ladder according to claim 4, characterized in that: Lugs (107) arranged at intervals are extended outward from the edge of the connecting ear plate (103), and the clamping groove (104) is formed between two adjacent lugs (107).

7. The anti-twist fixing device for a round tube ladder according to claim 6, characterized in that: The cross section of the lug (107) gradually decreases in the opening direction of the slot (104).

8. The anti-twist fixing device for a round tube ladder according to claim 1, characterized in that: The ladder body (101) is connected to a pedal rod (108) for climbing and serving as the clamping portion (102).

9. The anti-twist fixing device for a round tube ladder according to claim 1, characterized in that: The connecting ear plates (103) and the fasteners (105) are evenly arranged in multiple groups along the axial direction of the ladder body (101).

10. The anti-twist fixing device for a round tube ladder according to claim 1, characterized in that: The fastener (105) is a U-shaped bolt.

Images