Cylindrical surface ladder stand safety device

Abstract

The utility model relates to a cylindrical ladder stand safety device which comprises a fixed shell, a locking piece and an elastic piece, the locking pieces are symmetrically connected to the interior of the fixed shell and are in sliding fit with the guide grooves of the fixed shell, the elastic pieces are connected to the inner sides of the locking pieces, the locking pieces are in contact with the working cylindrical surface, the locking pieces are locked by rotating the nuts, and the ladder stand cross beams are clamped with the clamping grooves of the fixed shell, so that the stability of the ladder stand is improved; therefore, the safety of an operator using the crawling ladder to perform cylindrical surface climbing operation is improved, the locking piece slides to adapt to cylindrical surfaces with various widths, and the practicability and convenience of the device are improved.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection technology and relates to a safety device for a column ladder. Background Technology

[0002] In industries such as power, communications, and chemicals, maintenance personnel often work at heights on cylindrical structures such as pipelines, utility poles, and support frames. Ladders are the most commonly used and practical tool for working at heights. Currently, when working at heights on a column, the ladder is directly supported by the column, and a person holds the ladder to work. This has the following disadvantages: (1) Insufficient stability: It is difficult for the ladder to be firmly supported on the column, which may cause the ladder to slide, tilt, or even fall during use, causing the workers to lose their balance and fall; (2) Limited support points: The effective support points provided by the column are relatively few, which cannot provide uniform and reliable support for the ladder; (3) Greatly affected by wind and other environmental factors: When working at heights, the ladder will sway when the wind is strong, increasing the danger of the work; (4) High pressure on the ladder handlers: In order to maintain the balance and stability of the ladder and ensure the safety of the workers on the ladder, the ladder handlers have great difficulty and psychological pressure, which poses a safety hazard. Summary of the Invention

[0003] The technical problem this invention aims to solve is to provide a safety device for a column-mounted ladder. By installing the safety device on the top beam of the ladder, with the locking arm cantilever contacting the column surface, the contact point and support surface between the ladder and the column are increased, enhancing the stability of the ladder and ensuring the safety of climbing operations on a column surface using a ladder. This addresses many safety concerns associated with ladders in column-mounted operations, such as limited support points, insufficient stability, and significant susceptibility to environmental factors like wind.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a safety device for a cylindrical ladder, which includes a fixed housing, a locking element, and an elastic element; the locking element is symmetrically connected to the inner side of the fixed housing, and the shaft of the locking element is slidably engaged with the first guide groove of the fixed housing, the nut is threadedly engaged with the connecting bolt of the locking element, and the elastic element is connected to the inner end face of the base of the locking element.

[0005] The fixed housing is a cavity structure. The upper end face of the fixed housing is provided with a first guide groove and a second guide groove. The side of the fixed housing is provided with a locking groove, and the locking groove is perpendicular to the axial direction of the second guide groove.

[0006] The locking component includes a base, a column, a cantilever, a connecting bolt, and a nut; the upper end of the base is connected to the column, the upper end of the column is connected to one end of the cantilever, the connecting bolt is connected to the side of the base, and the nut is threadedly engaged with the upper end of the connecting bolt.

[0007] The connecting bolt is L-shaped, with one end connected to the side of the base of the locking component, and the other end of the connecting bolt having a thread and engaging with the nut thread through the second guide groove.

[0008] The upper and lower surfaces of the substrate are fitted to the inner side of the fixed housing cavity.

[0009] The locking member's shaft is slidably engaged with the first guide groove of the fixed housing, and the locking member's connecting bolt is slidably engaged with the second guide groove of the fixed housing through the lower end of the threaded journal.

[0010] The cantilever is a flat plate, and the cantilever is horizontally and vertically connected to the upper end of the shaft column.

[0011] The main beneficial effects of this utility model are as follows:

[0012] The locking groove of the fixed shell engages with the top crossbeam of the ladder, increasing the swaying of the ladder and improving the safety of the workers.

[0013] By contacting the working column surface with the cantilever and rotating the nut to make the nut contact the upper end surface of the fixed housing, the locking element is locked, increasing the stability of the device and adapting to working columns of various widths.

[0014] By fitting the locking element to the inner side of the fixed housing, the locking element is prevented from shaking when locked, thus reducing the danger to operators. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the left-side structure of this utility model.

[0018] Figure 3 This is a top view of the structure of this utility model.

[0019] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0021] In the figure: fixed housing 1; first guide groove 11; second guide groove 12; engaging groove 13; locking element 2; base 21; shaft column 22; cantilever 23; connecting bolt 24; nut 25; elastic element 3. Detailed Implementation

[0022] like Figures 1-5A safety device for a cylindrical ladder includes a fixed housing 1, a locking element 2, and an elastic element 3. The locking element 2 is symmetrically connected to the inner side of the fixed housing 1, and the shaft 22 of the locking element 2 is slidably engaged with the first guide groove 11 of the fixed housing 1. The nut 25 is threadedly engaged with the connecting bolt 24 of the locking element 2. The elastic element 3 is connected to the inner end face of the base 21 of the locking element 2. By connecting the elastic element 3 to the inner side of the locking element 2, the device is stable and can adapt to working on cylindrical surfaces of various widths, increasing the practicality and applicability of the device.

[0023] Furthermore, the fixed housing 1 has a cavity structure. The upper surface of the fixed housing 1 is provided with a first guide groove 11 and a second guide groove 12, and the side surface of the fixed housing 1 is provided with a locking groove 13, which is perpendicular to the axial direction of the second guide groove 12. By engaging with the top crossbeam of the ladder through the locking groove 13, the fixed housing 1 is connected to the ladder, and the side surface of the cylindrical housing contacts the cylindrical surface, increasing the reliable support points of the device.

[0024] Furthermore, the locking component 2 includes a base 21, a column 22, a cantilever 23, a connecting bolt 24, and a nut 25. The upper end of the base 21 is connected to the column 22, the upper end of the column 22 is connected to one end of the cantilever 23, the connecting bolt 24 is connected to the side of the base 21, and the nut 25 is threadedly engaged with the upper end of the connecting bolt 24. This allows the locking component 2 to be fixed simultaneously through the contact between the cantilever 23 and the column surface, improving the fixing effect of the device.

[0025] Furthermore, the connecting bolt 24 is L-shaped, with one end connected to the side of the base 21 of the locking member 2, and the other end of the connecting bolt 24 having threads that engage with the nut 25 through the second guide groove 12. The sliding engagement between the connecting bolt 24 and the second guide groove 12 further prevents longitudinal sliding and tilting of the locking member 2 during locking, thus increasing the locking effect of the locking member 2.

[0026] Furthermore, the upper and lower end faces of the base 21 are fitted against the inner side of the cavity of the fixed housing 1. This prevents the base 21 from shaking within the cavity of the fixed housing 1 when the locking member 2 is locked, reducing the safety hazards when the locking member 2 is locked.

[0027] Furthermore, the shaft 22 of the locking member 2 is slidably engaged with the first guide groove 11 of the fixed housing 1, and the connecting bolt 24 of the locking member 2 is slidably engaged with the second guide groove 12 of the fixed housing 1 through the threaded lower end journal. The nut 25 is threadedly engaged with the connecting bolt 24, so that the nut 25 contacts the upper end surface of the fixed housing 1, increasing the friction and improving the overall stability of the device.

[0028] Furthermore, the cantilever 23 is a flat plate, and it is horizontally and vertically connected to the upper end of the column 22. When the device is locked, the side of the cantilever 23 contacts the column surface, increasing the contact points between the device and the column surface and improving the reliance of the ladder on the column surface.

[0029] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A cylindrical ladder safety device, characterized by: It includes a fixed housing (1), a locking element (2), and an elastic element (3); the locking element (2) is symmetrically connected to the inside of the fixed housing (1), and the shaft (22) of the locking element (2) is slidably engaged with the first guide groove (11) of the fixed housing (1), the nut (25) is threadedly engaged with the connecting bolt (24) of the locking element (2), and the elastic element (3) is connected to the inner end face of the base (21) of the locking element (2).

2. The cylindrical ladder safety device of claim 1, wherein: The fixed housing (1) is a cavity structure. The upper end face of the fixed housing (1) is provided with a first guide groove (11) and a second guide groove (12). The side of the fixed housing (1) is provided with a locking groove (13), and the locking groove (13) is perpendicular to the axial direction of the second guide groove (12).

3. The cylindrical ladder safety device of claim 1, wherein: The locking component (2) includes a base (21), a shaft (22), a cantilever (23), a connecting bolt (24), and a nut (25). The upper end face of the base (21) is connected to the shaft (22), the upper end of the shaft (22) is connected to one end of the cantilever (23), the connecting bolt (24) is connected to the side of the base (21), and the nut (25) is threadedly engaged with the upper end of the connecting bolt (24).

4. The cylindrical ladder safety device of claim 3, wherein: The connecting bolt (24) is L-shaped. One end of the connecting bolt (24) is connected to the side of the base (21) of the locking member (2). The other end of the connecting bolt (24) is threaded and threadedly engaged with the nut (25) through the second guide groove (12).

5. The cylindrical ladder safety device of claim 3, wherein: The upper and lower surfaces of the substrate (21) are attached to the inner side of the cavity of the fixed shell (1).

6. The cylindrical ladder safety device of claim 3, wherein: The shaft (22) of the locking member (2) is slidably engaged with the first guide groove (11) of the fixed housing (1), and the connecting bolt (24) of the locking member (2) is slidably engaged with the second guide groove (12) of the fixed housing (1) through the lower end journal of the thread.

7. The cylindrical ladder safety device of claim 3, wherein: The cantilever (23) is a flat plate, and the cantilever (23) is horizontally and vertically connected to the upper end of the shaft column (22).

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