CN112482984A

CN112482984A - Ladder

Info

Publication number: CN112482984A
Application number: CN202011339315.0A
Authority: CN
Inventors: 郑兆典; 杨佳麟; 陈家韶; 罗云吉尔; 李玉鹏; 林国栋
Original assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-12

Abstract

The invention belongs to the technical field of electric devices, and discloses a ladder which comprises two ladder bars which are arranged side by side, wherein each ladder bar can stretch along the axial direction of the ladder bar, and a plurality of rungs are arranged between the two ladder bars; the two bases are arranged at the bottom ends of the two ladder bars and are both contacted with the ground; the base pins are arranged on each base and can extend into the ground. According to the ladder provided by the invention, the two ladder bars of the ladder can extend and retract along the axial direction of the ladder, the ladder can adapt to uneven terrains, and the plug pins on the base of the ladder are inserted into the bottom of the ladder when the ladder is placed, so that the bottom of the ladder is contacted with the ground more firmly, and the ladder is safer to use.

Description

Ladder

Technical Field

The invention relates to the technical field of electric devices, in particular to a ladder.

Background

In power system operation, ladders are important tools for workers to perform daily operations on power equipment. When the ladder is used, the bottom of the ladder is in contact with the ground, and then the ground provides a supporting effect for the ladder, so whether the bottom of the ladder is in contact with the ground firmly determines whether the ladder is placed stably.

In actual operation, the terrains of some operation sites, particularly field operation sites, are very complex, the ground is usually uneven, the bottom of the existing ladder cannot be firmly contacted with the ground, the ladder cannot be safely and stably placed, and the working personnel have very large potential safety hazards when working on the ladder. When the situation occurs, a specially-assigned escalator is usually required to be arranged, and workers on the escalator can injure people on the escalator due to the fact that the tools fall off slightly carelessly.

Disclosure of Invention

The invention aims to provide a ladder which is stable to place and can adapt to different terrains.

In order to achieve the purpose, the invention adopts the following technical scheme: a ladder, comprising:

the ladder comprises two ladder bars which are arranged side by side, wherein each ladder bar can stretch along the axial direction of the ladder bar, and a plurality of steps are arranged between the two ladder bars;

the two bases are arranged at the bottom ends of the two ladder bars and are in contact with the ground;

the base pins are installed on each base, and the base pins can extend into the ground.

Preferably, the pins are rotatably mounted on the base.

Preferably, one of the base and the plug pins is provided with a U-shaped clamping groove, the other one of the base and the plug pins is provided with a connecting part, the connecting part is rotatably arranged in the U-shaped clamping groove, and a fastening screw is arranged on the side wall of the U-shaped clamping groove;

and the fastening screw is pressed tightly, and the connecting part is tightly propped against the inner side wall of the U-shaped clamping groove.

Preferably, the pins are fixed to the base.

Preferably, the pins are distributed evenly along the circumferential direction of the base.

Preferably, the electric pole ladder further comprises a clamping device, wherein the clamping device is mounted on the step and used for clamping the electric pole.

Preferably, the clamping device comprises two symmetrically arranged clampbands, and one end of each clampband is rotatably or slidably connected with the step.

Preferably, the number of the clamping devices is at least two, and the ladder is provided with the clamping devices on the top and the bottom of the ladder.

Preferably, the part of the ladder bar below the step of the bottom layer is telescopic.

Preferably, a plurality of the steps are each extendable and retractable in the axial direction thereof.

The invention has the beneficial effects that: according to the ladder provided by the invention, the two ladder bars of the ladder can extend and retract along the axial direction of the ladder, the ladder can adapt to uneven terrains, and the plug pins on the base of the ladder are inserted into the bottom of the ladder when the ladder is placed, so that the bottom of the ladder is contacted with the ground more firmly, and the ladder is safer to use.

Drawings

FIG. 1 is a schematic view of a ladder of the present invention;

FIG. 2 is a schematic view of the ladder of the present invention as it is positioned in complex terrain;

figure 3 is a schematic view of the clamping device of the ladder of the present invention in use.

In the figure: 1. a ladder bar; 2. a step; 3. a base; 4. a pin; 5. a clamping device; 51. a clampband.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The invention provides a ladder, which is applied to climbing operation, in particular to electric pole climbing operation. The above ladder construction of the present invention is illustrated in the following specific examples.

Example 1

As shown in fig. 1, the present embodiment provides a ladder, which comprises two ladder bars 1, two ladder rungs 2, a base 3 and pins 4, wherein the two ladder bars 1 are arranged side by side for overlapping the ground and a point to be ascended; the number of the steps 2 is multiple, and the steps 2 are arranged between the two ladder bars 1 and used for climbing; base 3 has two, and two bases 3 install in the bottom of two terraced poles 1, and two bases 3 all contact with ground for the contact of terraced pole 1 and ground participates in 4 and installs on base 3, is used for firm terraced pole 1 and the contact on ground.

When using the ladder, because every ladder pole 1 all can follow its axial and stretch out and draw back, according to the actual conditions of operation scene topography, adjust the length of every ladder pole 1 to make the ladder put by the perpendicular to horizontal plane on the whole, improve the stability that the ladder was placed. After the ladder is placed, the base pins 4 on each base 3 extend into the ground, the firmness degree of the base 3 of the ladder contacting with the ground is improved, the placing stability of the ladder is further improved, and the ladder is safer to use.

In this embodiment, since the plurality of steps 2 are installed on the portion of the ladder bar 1 located above the bottom step 2, when each ladder bar 1 extends and retracts along the axial direction thereof according to the actual requirement, if the portion of the ladder bar 1 located above the bottom step 2 is retractable, the steps 2 are no longer in the horizontal state, and there is a danger when the worker climbs the ladder, so that the portion of the ladder bar 1 located below the bottom step 2 is retractable.

In this embodiment, a plurality of steps 2 are along the axial equipartition of terraced pole 1, are favorable to staff's ascending a ladder. Further, the plurality of rungs 2 are extendable and retractable in the axial direction thereof, enabling the ladder to adapt to more complex terrain. It can be understood that, when the height drop that needs the contact topography bottom two terraced poles 1 is great, when terraced pole 1 also can't put the ladder on the whole perpendicular to horizontal plane after stretching out and drawing back along its axial, through flexible step 2, realize the adjustment of distance between two terraced poles 1 to the height drop that needs the contact topography bottom two terraced poles 1 reduces, and then makes the ladder put perpendicular to horizontal plane on the whole through the axial of terraced pole 1 is flexible.

As preferred technical scheme, the diapire face of base 3 is equipped with the slipmat, improves the firm degree of base 3 and ground contact.

In this embodiment, when the ladder needs to be upright idle on even ground, participate in 4 and rotate and install on base 3, can avoid participating in 4 direct contact ground, but make base 3 contact ground, place firmly.

Illustratively, a U-shaped clamping groove is formed in the base 3, a connecting portion is formed in the pin 4, the connecting portion of the pin 4 is rotatably arranged in the U-shaped clamping groove of the base 3, and a fastening screw is arranged on the side wall of the U-shaped clamping groove. And (3) compressing the fastening screws, tightly supporting the connecting parts on the inner side wall of the U-shaped clamping groove, realizing the locking of the pin 4, loosening the fastening screws and realizing the unlocking of the pin 4.

Alternatively, participate in and be equipped with the U-shaped draw-in groove on 4, be equipped with connecting portion on the base 3, the connecting portion of base 3 rotate arrange in participate in the U-shaped draw-in groove of 4, be equipped with fastening screw on the lateral wall of U-shaped draw-in groove. And (3) compressing the fastening screws, tightly supporting the connecting parts on the inner side wall of the U-shaped clamping groove, realizing the locking of the pin 4, loosening the fastening screws and realizing the unlocking of the pin 4.

The rotating structure is convenient to operate and simple in structure.

As a preferable technical scheme, the number of the pins 4 is multiple, and the multiple pins 4 are uniformly distributed along the circumferential direction of the base 3, so that the contact firmness degree of the ladder base 3 and the ground is further improved. Illustratively, the ladder of this embodiment is provided with four pins 4, as shown in fig. 1.

As shown in fig. 1, the ladder of the present embodiment further includes a clamping device 5, and the clamping device 5 is mounted on the rung 2 for clamping the electric pole, so as to prevent the ladder from falling sideways, and further improve the stability of placing the ladder. Illustratively, the clamping device 5 includes two symmetrically arranged clampbands 51, and one end of the clampband 51 is rotatably or slidably connected to the step 2.

Specifically, when one end of the bail 51 is rotatably connected to the rung 2, the rung 2 is provided with a sliding block capable of sliding along the axial direction thereof, and one end of the bail 51 is rotatably connected to the sliding block, so that the bail 51 can rotate and slide relative to the rung 2, and the clamp device 5 can be adapted to electric poles of different diameters.

Specifically, when one end of the clampband 51 is slidably connected to the step 2, a connection slider may be provided at a connection end of the clampband 51 to the step 2, the clampband 51 may rotate around the connection slider, and the step 2 may be provided with a sliding groove, and the connection slider may be slidably connected to the sliding groove, so that the clampband 51 may rotate and slide with respect to the step 2. It can be understood that the connecting end of the clampband 51 and the step 2 may further be provided with a connecting sliding groove, the clampband 51 may rotate around the connecting sliding groove, the step 2 is provided with a sliding rail, and the sliding rail is slidably connected with the connecting sliding groove, so that the clampband 51 can rotate and slide relative to the step 2, and the clamping device 5 can adapt to electric poles with different diameters.

With the clamping device 5, when a ladder needs to be erected on the pole, the two clampers 51 are slid open relative to the rung 2, the pole is placed between the two clampers 51, then the two clampers 51 are slid and clamped to a certain extent relative to the rung 2, and finally the two clampers 51 are rotated, so that the two clampers 51 tightly clamp the pole. Furthermore, the number of the clamping devices 5 is at least two, and the ladder is more stable to place due to the fact that the clamping devices 5 are arranged on the rungs 2 at the top and the bottom of the ladder, and the side falling condition is avoided.

According to the embodiment, the two ladder bars 1 of the ladder can stretch along the axial direction, so that the ladder can adapt to uneven terrain. When the ladder is placed, the feet 4 on the base 3 of the ladder are inserted under the ladder, so that the bottom of the ladder is contacted with the ground more firmly. Through clamping device 5, can avoid the ladder the condition that the side falls to appear, the ladder uses safelyr.

Example 2

This embodiment provides a ladder which differs from the ladder provided in embodiment 1 only in that the pins 4 are secured directly to the base 3, and when the ladder is not required to be stooped up for storage, the pins 4 no longer need to be stowed away and the pins 4 can be secured directly to the base 3. It will be appreciated that the direct attachment of the pins 4 to the base 3, whether the ladder is in use or when the ladder is not in use, may eliminate the attachment of the pins 4 and reduce the number of operational steps.

The rest of the structure of this embodiment is the same as that of embodiment 1, and is not described again.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A ladder, comprising:

the ladder comprises two ladder bars (1) which are arranged side by side, wherein each ladder bar (1) can stretch along the axial direction of the ladder bar, and a plurality of steps (2) are arranged between the two ladder bars (1);

two bases (3), wherein the number of the bases (3) is two, the two bases (3) are arranged at the bottom ends of the two ladder bars (1), and the two bases (3) are both in contact with the ground;

the base pins (4) are mounted on each base (3), and the base pins (4) can extend into the ground.

2. A ladder as claimed in claim 1, characterized in that the pins (4) are pivotally mounted on the base (3).

3. A ladder as claimed in claim 2, characterized in that one of said base (3) and said pins (4) is provided with a U-shaped slot and the other with a connection portion rotatably disposed in said U-shaped slot, the side wall of said U-shaped slot being provided with a fastening screw;

4. A ladder as claimed in claim 1, characterized in that the pins (4) are fixed to the base (3).

5. A ladder as claimed in claim 3 or 4, characterized in that said pins (4) are provided in a plurality, said plurality of pins (4) being evenly distributed along the circumference of said base (3).

6. A ladder as claimed in claim 1, characterized by further comprising clamping means (5), said clamping means (5) being mounted on said rungs (2) for clamping electric poles.

7. A ladder as claimed in claim 6, characterized in that the clamping device (5) comprises two symmetrically arranged clampbands (51), one end of the clampbands (51) being in a rotating or sliding connection with the rungs (2).

8. A ladder as claimed in claim 7, characterized in that the clamping means (5) are at least two, and that the rungs (2) at the top and bottom of the ladder are provided with the clamping means (5).

9. A ladder as claimed in claim 1, characterized in that the part of the ladder bar (1) below the bottom rung (2) is telescopic.

10. A ladder as claimed in claim 1, characterized in that a plurality of said rungs (2) are telescopic in their axial direction.