Anti-toppling ladder for power grid infrastructure and method of use

Abstract

The application provides an anti-toppling ladder for power grid infrastructure and a use method, and belongs to the technical field of power grid infrastructure.The application comprises four limiting mechanisms and expansion and contraction mechanisms.When the four ladder uprights are placed one by one in the four grooves, the operator presses the ladder uprights downward, the expansion and contraction mechanisms increase in volume after the ladder uprights exert downward pressure on the expansion and contraction mechanisms, the limiting mechanisms move away from the end of the ladder uprights in a direction away from the central axis of the ladder uprights, so that the limiting mechanisms are attached to the grooves, and the main ladder and the auxiliary ladder do not move in position under the working condition of the operator, thereby solving the technical problems of poor stability of the ladder uprights in contact with the ground and easy toppling of the ladder in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of power grid infrastructure technology, and more specifically, relates to an anti-tipping ladder for power grid infrastructure and its usage method. Background Technology

[0002] During the construction of substation infrastructure, the phenomenon of ladders tipping over frequently occurs. Ladders pose certain safety risks during operation. Most construction sites adopt a method of one person holding the ladder while another person works to prevent this from happening. However, this increases the uncertainty, and accidents often occur where tools fall and injure the person holding the ladder.

[0003] In existing technology, a combined ladder includes a main ladder, an auxiliary ladder, and a ladder platform installed between the main and auxiliary ladders. Both the main and auxiliary ladders have two ladder columns, and the ladder platform is rotatably connected to the ladder columns. Rubber insulating sleeves are installed at the bottom support points of the ladder columns. Bolt holes are provided on the upper crossbar for connection to the combined ladder used in substation construction. The upper crossbar is bolted to the combined ladder. This case, by adding rubber sleeves at the bottom support points, increases the support area and friction, thus solving the problems of excessive pressure on the ground and insufficient lateral support torque of the combined ladder. Grooves are excavated in the ground to accommodate the ladder columns, preventing them from sliding. Furthermore, the bolt holes on the upper crossbar for connection to the combined ladder used in substation construction, and the bolted connection between the upper crossbar and the combined ladder, allow for disassembly and easy transport.

[0004] Although adding rubber sleeves to the bottom support points can increase the support area and friction, thus achieving the effect of preventing the ladder from tipping over, the stability of the ladder columns on both sides in contact with the ground is poor. Simply increasing the friction between the diagonal braces and the ground is not enough to improve the effect of preventing the ladder from tipping over. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-tipping ladder for power grid infrastructure and its usage method, so as to solve the technical problem that the ladder column has poor stability in contact with the ground and the ladder is prone to tipping when closed in the prior art.

[0006] To achieve the above objectives, in a first aspect, the technical solution adopted by the present invention is to provide an anti-tipping ladder for power grid infrastructure, which includes not only a main ladder, an auxiliary ladder, and a ladder platform installed between the main ladder and the auxiliary ladder, but also two ladder columns on both the main ladder and the auxiliary ladder, and four limiting mechanisms and an expansion and contraction mechanism. The four limiting mechanisms are correspondingly located at the bottom of the ladder columns to limit their movement. The expansion and contraction mechanism is located on the ladder platform and connected to the limiting mechanisms.

[0007] When the expansion and contraction mechanism is compressed, it causes the end of the limiting mechanism away from the ladder column to move away from the central axis of the ladder column, so that the limiting mechanism fits into the groove.

[0008] In one possible implementation, the expansion and contraction mechanism includes an air bladder, four connecting pipes, and four expansion and contraction components. The air bladder is located on the upper part of the ladder platform; the four connecting pipes are correspondingly arranged with the ladder columns, and the connecting pipes pass through the ladder columns, with one end of each connecting pipe communicating with the air bladder; the four expansion and contraction components are correspondingly arranged with the limiting mechanism, and the expansion and contraction components are located inside the limiting mechanism, and each expansion and contraction component is correspondingly arranged with one of the connecting pipes, with the other end of each expansion and contraction component communicating with the connecting pipe.

[0009] In one possible implementation, the limiting mechanism includes a base plate and a plurality of locking members. The base plate is disposed at the bottom of the ladder column and connected to the bottom of the ladder column; the plurality of locking members are arranged around the bottom of the base plate, and the locking members are slidably or rotatably connected to the base plate.

[0010] The expansion member is located at the bottom of the base plate, and the plurality of locking members are arranged at intervals around the expansion member in a ring.

[0011] In one possible implementation, the limiting mechanism is rotatably connected to the bottom of the ladder column.

[0012] In one possible implementation, the base plate and the ladder column are connected by a hinged connection structure, and the limiting mechanism further includes a limiting part. The limiting part is sleeved on the outside of the hinged connection structure, and the upper end of the limiting part is connected to the connecting pipe.

[0013] In one possible implementation, the limiting part is a tubular structure, and the tube wall of the limiting part is provided with a plurality of air tubes, one end of which is connected to the connecting tube.

[0014] In one possible implementation, the bottom of the expansion joint is provided with a layer of abrasive particles.

[0015] In one possible implementation, the limiting part is a bellows.

[0016] In one possible implementation, the locking element is made of rubber.

[0017] Secondly, the present invention also provides a method for using an anti-tipping ladder for power grid infrastructure, comprising the above-mentioned anti-tipping ladder for power grid infrastructure, including the following steps:

[0018] S1. The operator places the four ladder columns into the four grooves one by one;

[0019] S2. After the operator places the ladder column, he presses the ladder column downward. When the expansion and contraction mechanism is subjected to downward pressure, it drives the end of the limiting mechanism away from the ladder column away from the central axis of the ladder column, so that the limiting mechanism fits into the groove.

[0020] S3. After the limiting mechanism is engaged with the groove, the operator climbs onto the ladder platform to perform electrical work.

[0021] S4. After the operator completes the electrical work and leaves the ladder, the operator lifts the ladder column, the external pressure on the expansion and contraction mechanism is released, and the limiting mechanism returns to its initial position so that the limiting mechanism is disengaged from the groove.

[0022] S5. Store the ladder.

[0023] The beneficial effects of this invention, which provides an anti-tipping ladder for power grid infrastructure and its usage method, are as follows: Compared with the prior art, this invention includes four limiting mechanisms and an expansion / contraction mechanism. When the four ladder columns are placed in the four corresponding grooves, the operator presses down on the ladder columns. After the ladder columns apply downward pressure to the expansion / contraction mechanism, the volume of the expansion / contraction mechanism increases, causing the end of the limiting mechanism away from the ladder column to move away from the central axis of the ladder column. This allows the limiting mechanism to fit into the groove, ensuring that the main ladder and auxiliary ladder do not move while the operator is working. This solves the technical problem in the prior art where the stability of the ladder columns in contact with the ground is poor, and the ladder is prone to tipping when closed. Attached Figure Description

[0024] 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.

[0025] Figure 1 An isometric structural diagram of an anti-tipping ladder for power grid infrastructure provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of area A is provided.

[0027] Figure 3 This is an isometric structural diagram of the limiting mechanism in Example 1;

[0028] Figure 4 for Figure 3 Elevation sectional view of the middle limiting mechanism;

[0029] Figure 5This is a schematic diagram showing the connection between the limiting mechanism and the ladder column in Example 2;

[0030] Figure 6 for Figure 5 Elevation sectional view of the middle limiting mechanism;

[0031] 1. Main staircase; 2. Secondary staircase; 3. Staircase platform; 11. Staircase uprights;

[0032] 4. Limiting mechanism; 41. Base plate; 42. Locking component;

[0033] 51. Airbag; 52. Connecting tube; 53. Expansion / contraction component;

[0034] 54. Hinged connection structure; 55. Limiting part; 551. Air tube. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] 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, power mechanisms, power supply systems, hydraulic systems and control systems 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.

[0037] 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.

[0038] The terms “length,” “width,” “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to 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.

[0039] 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.

[0040] The present invention will now describe an anti-tipping ladder for power grid infrastructure and its usage method.

[0041] Firstly, please refer to the following: Figure 1 and Figure 2 The first embodiment of this invention provides an anti-tipping ladder for power grid infrastructure, which includes not only a main ladder 1, an auxiliary ladder 2, and a ladder platform 3 installed between the main ladder 1 and the auxiliary ladder 2, but also two ladder columns 11 on both the main ladder 1 and the auxiliary ladder 2, and four limiting mechanisms 4 and an expansion and contraction mechanism. The four limiting mechanisms 4 are correspondingly located at the bottom of the ladder columns 11 to limit their movement. The expansion and contraction mechanism is located on the ladder platform 3 and connected to the limiting mechanisms 4, and is used to drive the limiting mechanisms 4 to move.

[0042] When the expansion and contraction mechanism is compressed, it causes the end of the limiting mechanism 4 away from the ladder column 11 to move away from the central axis of the ladder column 11, so that the limiting mechanism 4 fits into the groove.

[0043] This embodiment provides an anti-tipping ladder for power grid infrastructure. Compared with the prior art, this invention includes four limiting mechanisms 4 and an expansion and contraction mechanism. When the four ladder columns 11 are placed one-to-one in the four grooves, the operator presses down on the ladder columns 11. After the ladder columns 11 apply downward pressure to the expansion and contraction mechanism, the volume of the expansion and contraction mechanism increases, causing the end of the limiting mechanism 4 away from the ladder column 11 to move away from the central axis of the ladder column 11. This makes the limiting mechanism 4 fit into the groove, so that the main ladder 1 and the auxiliary ladder 2 do not move in position when the operator is working. This solves the technical problem in the prior art that the ladder columns 11 have poor stability in contact with the ground and the ladder is prone to tipping when closed.

[0044] Please refer to the following: Figures 1 to 4The present invention provides a further specific embodiment based on the above embodiments as follows: The expansion and contraction mechanism includes an airbag 51, four connecting pipes 52, and four expansion and contraction components 53. The airbag 51 is disposed on the upper part of the ladder platform 3; the four connecting pipes 52 are arranged one-to-one with the ladder columns 11, and the connecting pipes 52 pass through the ladder columns 11, with one end of the connecting pipe 52 connected to the airbag 51. The four expansion and contraction components 53 are arranged one-to-one with the limiting mechanism 4, and the expansion and contraction components 53 are disposed inside the limiting mechanism 4, with one end of the expansion and contraction component 53 connected to the other end of the connecting pipe 52.

[0045] After the operator sits firmly on the ladder platform 3, the airbag 51 gradually deflates under the operator's own weight, causing the gas inside the airbag 51 to enter the expansion and contraction component 53 through the connecting pipe 52, which causes the expansion and contraction component 53 to increase in volume, thereby causing the limiting mechanism 4 to fit against the inner side wall of the groove, thus limiting the ladder column 11.

[0046] When the operator leaves the ladder platform 3, the force applied to the airbag 51 disappears, and the gas inside the expansion joint 53 gradually flows back into the airbag 51 through the connecting pipe 52, causing the limiting mechanism 4 to gradually separate from the inner wall of the groove. However, during the operator's ascent and descent of the ladder, since the combined weight of the ladder and the operator remains unchanged, the expansion joint 53 is compressed, allowing the limiting mechanism 4 to slowly separate from the inner wall of the groove. When the operator has completely left the ladder, the limiting mechanism 4 is completely separated from the inner wall of the groove, thus preventing the ladder column 11 from shifting during the ascent and descent. The airbag 51 can also alleviate swelling of the operator's buttocks caused by prolonged labor.

[0047] Please refer to the following: Figure 3 and Figure 4 The present invention provides a further specific embodiment based on the above embodiments as follows: The limiting mechanism 4 includes a base plate 41 and a plurality of locking members 42. The base plate 41 is disposed at the bottom of the ladder column 11 and connected to the bottom of the ladder column 11; the plurality of locking members 42 are arranged around the bottom of the base plate 41 and are connected to the base plate 41.

[0048] The expansion joint 53 is located at the bottom of the base plate 41, and multiple locking members 42 are arranged in a ring around the expansion joint 53 at intervals.

[0049] When the volume of the expansion member 53 increases, the distance between the end of the locking member 42 away from the base plate 41 and the central axis of the expansion member 53 will increase as the volume of the expansion member 53 increases, so that the locking member 42 is engaged in the groove, thereby preventing the ladder column 11 from shifting.

[0050] Based on the above embodiments, the present invention provides a further specific embodiment as follows: the limiting mechanism 4 is rotatably connected to the bottom of the ladder column 11. The limiting mechanism 4 and the ladder column 11 are rotatably connected so that the limiting mechanism 4 can adjust the positional relationship between the limiting mechanism 4 and the ladder column 11 according to different angles between the ladder column 11 and the ground, thereby ensuring that the bottom surface of the limiting mechanism 4 remains horizontal with the ground and improving the safety during the use of the ladder.

[0051] Based on the above embodiments, the present invention provides a specific embodiment as follows: the base plate 41 and the ladder column 11 are connected by a hinged connection structure 54, and the limiting mechanism 4 further includes a limiting part 55, which is sleeved on the outside of the hinged connection structure 54, and the upper end of the limiting part 55 is connected to the connecting pipe 52.

[0052] The limiting part 55 can limit the angle between the base plate 41 and the ladder column 11 to prevent safety accidents.

[0053] Furthermore, please refer to the following: Figure 5 and Figure 6 The limiting part 55 is a tubular structure, and several air tubes 551 are provided inside the tube wall of the limiting part 55. One end of the air tube 551 is connected to the connecting tube 52. The gas in the airbag 51 is introduced into the tube wall of the limiting part 55 through the air tubes 551, thereby causing the limiting part 55 to expand and thus limiting the ladder column 11.

[0054] Furthermore, the bottom of the expansion joint 53 is provided with a frosted particle layer, which can increase the friction with the ground and improve the safety during the use of the elevator.

[0055] Furthermore, the limiting part 55 is a bellows. A bellows is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Its open end is fixed, and the sealed end is in a free state, with the elasticity increased by an auxiliary helical spring or leaf spring. During operation, it extends along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure.

[0056] Furthermore, the locking element 42 is made of rubber. Rubber has a certain degree of elasticity and hardness, which allows the end of the locking element 42 away from the base plate 41 to change with the volume change of the expansion and contraction element 53.

[0057] Secondly, the present invention also provides a method for using an anti-tipping ladder in power grid infrastructure, comprising:

[0058] S1. The operator places the four ladder columns 11 into the four grooves one by one;

[0059] S2. After the operator places the ladder column 11, he presses the ladder column 11 down. After the expansion and contraction mechanism is subjected to downward pressure, it drives the end of the limiting mechanism 4 away from the ladder column 11 away from the central axis of the ladder column 11, so that the limiting mechanism 4 fits into the groove.

[0060] After the S3 and limit mechanism 4 are in contact with the groove, the operator climbs onto the ladder platform 3 to carry out electrical work.

[0061] S4. After the operator completes the electrical work and leaves the ladder, the operator lifts the ladder column 11, the external pressure on the expansion and contraction mechanism is released, and the limit mechanism 4 returns to its initial position so that the limit mechanism 4 is disengaged from the groove.

[0062] S5, stowage-style elevator.

[0063] 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.

Claims

1. A tilt-resistant ladder for power grid infrastructure construction, comprising a main ladder (1), a secondary ladder (2), and a ladder platform (3) installed between the main ladder (1) and the secondary ladder (2), wherein both the main ladder (1) and the secondary ladder (2) are provided with two ladder columns (11), characterized in that, Also includes: Four limiting mechanisms (4) are provided at the bottom of the ladder column (11) in a corresponding manner to limit the ladder column (11); An expansion and contraction mechanism is provided on the ladder platform (3) and connected to the limiting mechanism (4); after being compressed, the expansion and contraction mechanism drives the end of the limiting mechanism (4) away from the ladder column (11) to move away from the central axis of the ladder column (11), so that the limiting mechanism (4) fits into the groove; the expansion and contraction mechanism includes an air bladder (51), four connecting pipes (52) and four expansion and contraction components (53); the air bladder (51) is located on the upper part of the ladder platform (3); the four connecting pipes (52) The four expansion joints (53) are arranged one-to-one with the ladder column (11), and the connecting pipe (52) passes through the ladder column (11). One end of the connecting pipe (52) is connected to the airbag (51); and four expansion joints (53) are arranged one-to-one with the limiting mechanism (4), and the expansion joints (53) are located inside the limiting mechanism (4). The expansion joints (53) are arranged one-to-one with the connecting pipe (52), and the other end of the expansion joints (53) is connected to the connecting pipe (52).

2. The anti-tipping ladder for power grid infrastructure as described in claim 1, characterized in that, The limiting mechanism (4) includes: The base plate (41) is located at the bottom of the ladder column (11) and is connected to the bottom of the ladder column (11); Multiple locking elements (42) are arranged around the bottom of the base plate (41), and the locking elements (42) are connected to the base plate (41); The expansion member (53) is located at the bottom of the base plate (41), and the plurality of locking members (42) are arranged in a ring at intervals around the expansion member (53).

3. The anti-tipping ladder for power grid infrastructure as described in claim 2, characterized in that, The limiting mechanism (4) is rotatably connected to the bottom of the ladder column (11).

4. The anti-tipping ladder for power grid infrastructure as described in claim 3, characterized in that, The base plate (41) and the ladder column (11) are connected by a hinged connection structure (54), and the limiting mechanism (4) further includes: The limiting part (55) is sleeved on the outside of the hinged connection structure (54), and the upper end of the limiting part (55) is connected to the connecting pipe (52).

5. The anti-tipping ladder for power grid infrastructure as described in claim 4, characterized in that, The limiting part (55) is a tubular structure, and a plurality of air tubes (551) are provided inside the tube wall of the limiting part (55), one end of the air tube (551) being connected to the connecting tube (52).

6. The anti-tipping ladder for power grid infrastructure as described in claim 5, characterized in that, The bottom of the expansion and contraction component (53) is provided with a frosted particle layer.

7. The anti-tipping ladder for power grid infrastructure as described in claim 6, characterized in that, The limiting part (55) is a corrugated pipe.

8. The anti-tipping ladder for power grid infrastructure as described in claim 6, characterized in that, The locking element (42) is made of rubber.

9. A method for using an anti-tipping ladder for power grid infrastructure, comprising the anti-tipping ladder for power grid infrastructure as described in any one of claims 1-8, characterized in that... This includes the following steps: S1. The operator places the four ladder columns (11) into the four grooves one by one; S2. After the operator places the ladder column (11) in place, he presses the ladder column (11) down. After the expansion and contraction mechanism is subjected to downward pressure, it drives the end of the limiting mechanism (4) away from the ladder column (11) away from the central axis of the ladder column (11) so that the limiting mechanism (4) fits into the groove. S3. After the limiting mechanism (4) fits into the groove, the operator climbs onto the ladder platform (3) to carry out electrical work. S4. After the operator completes the electrical work and leaves the ladder, the operator lifts the ladder column (11), the external pressure on the expansion and contraction mechanism is released, and the limiting mechanism (4) returns to its initial position so that the limiting mechanism (4) is disengaged from the groove. S5. Store the ladder.

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