Electric power overhaul device for electric power overhaul

Abstract

The electric power overhaul device comprises a bottom frame, an overhaul platform and a lifting mechanism connected between the bottom frame and the overhaul platform, a fence is arranged on the overhaul platform, a horizontal opening is formed in one side of the fence, a protective ladder is plugged at the opening, and the protective ladder is provided with a plurality of base ladder sets which are mutually folded and connected in a guiding mode. The base ladder sets are arranged in a nested mode inside and outside, the base ladder set located on the outermost side and the side wall of the maintenance platform are assembled in a hinged mode, the hinged axis extends horizontally, and the protection ladder is provided with a folding position and further provided with an unfolding position overturning outwards and downwards around the hinged axis. Wherein one base ladder group is connected with a pull rope, the maintenance platform is provided with a winch matched with the pull rope, the winch drives the pull rope to retract and release so as to drive the protective ladder to be switched between the folding position and the unfolding position, and the left side and the right side of the opening of the fence are provided with limiting structures used for being matched with the protective ladder in a hooking mode so as to vertically limit the protective ladder to the folding position. Double functions are achieved, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the field of electric power construction and maintenance, in particular to an electric power maintenance device used for electric power maintenance. Background Art

[0002] Electricity may fail after being overloaded or disturbed by external factors. Power failure will have a huge impact on people's lives. Large-scale power failure may even paralyze a city. Power maintenance is very important. During power maintenance, power personnel need to leave the ground for maintenance operations, and then equipment is needed for auxiliary maintenance.

[0003] The existing power maintenance device is generally designed with a maintenance platform, and the lifting and lowering of the maintenance platform is controlled by a lifting mechanism to complete the operation. Specifically, the maintenance platform is arranged on the base frame, and the lifting and lowering of the maintenance platform is controlled by the extension and retraction of the drive cylinder, motor drive, folding frame, etc. At the same time, in order to protect the workers, a circle of fences are arranged around the maintenance platform. However, the current maintenance device has the following problems: when the lifting mechanism fails, or the maintenance platform is stuck and cannot be lowered after being lifted, the workers can only climb down from the maintenance platform by climbing the maintenance platform or setting up an additional ladder. However, this method is very dangerous and cannot guarantee a quick escape from the dangerous state. Placing a ladder on the maintenance platform takes up space on the platform, affecting the maintenance efficiency. Utility Model Content

[0004] The utility model aims to provide an electric power maintenance device for electric power maintenance, so as to solve the problem in the prior art that the maintenance platform cannot be lowered, resulting in safety risks and workers cannot leave quickly.

[0005] In order to solve the above problems, the power maintenance device for power maintenance involved in the utility model adopts the following technical solutions:

[0006] An electric power maintenance device for electric power maintenance comprises a base frame, an maintenance platform and a lifting mechanism connected between the base frame and the maintenance platform, wherein the maintenance platform is provided with a fence, one side of the fence has a horizontal opening, the opening is blocked with a protective ladder, the protective ladder has a plurality of base ladder groups that are folded and guided to each other, each base ladder group is nested inside and outside, the outermost base ladder group is hingedly assembled with the side wall of the maintenance platform, the hinge axis extends horizontally, the protective ladder has a folding position that is arranged upright to enclose with the fence to block the maintenance platform on all sides, and also has an unfolding position that is flipped outward and downward around the hinge axis and each base ladder group is stretched out; a pull rope is connected to one of the base ladder groups, and a winch that cooperates with the pull rope is provided on the maintenance platform, the winch drives the pull rope to be retracted and released to drive the protective ladder to switch between the folding position and the unfolding position, and the left and right sides of the opening of the fence are provided with limiting structures for cooperating with the protective ladder hook to limit the protective ladder to the folding position.

[0007] Furthermore, the base ladder group includes two left and right upright poles arranged side by side at intervals, the two upright poles are arranged symmetrically, guide grooves are provided on the opposite side walls of the upright poles, a cross bar for stepping on is connected between the two upright poles, and the outer sides of the upright poles are connected to guide blocks for guiding and assembling with the guide grooves of the upright poles of the outer base ladder group.

[0008] Furthermore, the guide block is a long strip structure with a T-shaped cross section.

[0009] Furthermore, the lengths of the uprights of each ladder group decrease step by step from the outside to the inside.

[0010] Furthermore, the limiting structure includes a hook arranged at the edge of the opening of the fence, the hook is hingedly assembled on the side wall of the fence, the hinge axis is perpendicular to the opening direction of the opening, and the protective ladder is provided with an L-shaped hanging plate that cooperates with the hook.

[0011] Furthermore, there are two hooks, which are symmetrically arranged on the left and right sides of the opening of the fence.

[0012] Furthermore, a reversing wheel cooperating with a pull rope is provided at the center of the opening on the maintenance platform, and the pull rope is hooked and cooperated with the cross bar of the innermost base ladder group.

[0013] The beneficial effects of the utility model are as follows: compared with the prior art, the power maintenance device designed by the utility model for power maintenance, when actually used, under normal use conditions, the fence on one side is designed to be in the structural form of a protective ladder, and the maintenance platform is protected as a whole by the protective ladder and other fences. When a fault or jam occurs, the worker opens the limit structure and flips the protective ladder outward. At this time, the flipping and downward extension speed of the protective ladder are controlled by the winch. When it reaches near the ground, the various base ladder groups of the protective ladder are opened, and the conversion from the fence to the ladder is completed. Workers can climb along the protective ladder, effectively avoiding the risk of jamming that causes the workers to be unable to quickly get on and off the maintenance platform. Moreover, the protective ladder can not only play the role of a protective fence, but also realize the role of a climbing ladder. It has dual functions, a simple structure, and does not occupy the internal space of the maintenance platform, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0015] Figure 1 It is a schematic structural diagram of a specific embodiment of the power maintenance device for power maintenance of the utility model;

[0016] Figure 2 for Figure 1 Left view of;

[0017] Figure 3 for Figure 1 Schematic diagram of the middle protective ladder in the unfolded state;

[0018] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0019] Figure 5 for Figure 2 Schematic diagram of the structure of the middle protection ladder.

[0020] Description of reference numerals: 1-underframe 1; 2-travel wheel 2; 3-inspection platform 3; 4-hydraulic cylinder 4;

[0021] 5- fence 5; 51- hook 51;

[0022] 6-protection ladder 6; 61-base ladder set 61; 62-vertical pole 62; 63-cross bar 63; 64-guide groove 64; 65-guide block 65; 66-hanging plate 66;

[0023] 7-pull rope 7; 8-winch 8; 9-reversing wheel 9. DETAILED DESCRIPTION

[0024] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0025] The specific embodiment of the power maintenance device for power maintenance involved in the utility model is as follows: Figures 1 to 5 As shown, the power maintenance device for power maintenance includes a base frame 1, a maintenance platform 3 and a lifting mechanism connected between the base frame 1 and the maintenance platform 3, and a fence 5 is provided on the maintenance platform 3, wherein the bottom of the base frame 1 has walking wheels 2 to facilitate workers to move the device. The lifting mechanism in this embodiment is a hydraulic cylinder 4. Of course, in the preferred embodiment, other methods such as an articulated frame, a motor screw rod, etc. can also be used instead without specific limitation.

[0026] The fence 5 has an opening for people to enter and exit, and at the same time, there is a horizontal opening on the other side of the fence 5, and a protective ladder 6 is blocked at the opening. The protective ladder 6 can not only realize the climbing function of the ladder, but also can protect the maintenance platform 3 together with the fence 5.

[0027] The structure of the protective ladder 6 is shown in the figure, which has a plurality of base ladder groups 61 folded and connected to each other, each base ladder group 61 is nested inside and outside, the base ladder group 61 includes two left and right vertical poles 62 arranged side by side, the two vertical poles 62 are arranged symmetrically, and guide grooves 64 are provided on the opposite side walls of the vertical poles 62, a cross bar 63 for stepping is connected between the two vertical poles 62, and a guide block 65 for guiding and assembling with the guide groove 64 of the vertical pole 62 of the outer base ladder group 61 is connected to the outer side of the vertical pole 62. Specifically, the above-mentioned guide groove 64 extends axially along the vertical pole 62, and the upper and lower ends are blocked. The guide groove 64 adopts a groove structure with a T-shaped cross section. Correspondingly, the guide block 65 is a long strip plate structure with a T-shaped cross section. At the same time, in order to adapt to the assembly of each base ladder group 61, the length of the vertical pole 62 of each base ladder group 61 decreases step by step from the outside to the inside.

[0028] During the actual connection, for two adjacent base ladder groups 61, the vertical poles 62 on the same side of the two base ladder groups 61 are always extended in the same direction through the guiding assembly of the guide block 65 and the guide rod, and the two vertical poles 62 on the same side are arranged side by side and close to each other, and the length of the vertical pole 62 located on the inner side is smaller than the length of the vertical pole 62 located on the outer side, so that the upper or lower part of the base ladder group 61 located on the inner side can accommodate the connection of the cross bar 63.

[0029] Of course, in order to realize the folding and unfolding of the protective ladder 6, the outermost ladder group 61 is hingedly assembled with the side wall of the inspection platform 3, and the hinge axis extends horizontally. The protective ladder 6 has a folding position in which it is arranged vertically to enclose the fence 5 to enclose the inspection platform 3, and also has an unfolding position in which it is turned outward and downward around the hinge axis and each ladder group 61 is stretched out; when the protective ladder 6 is in the folding position, the protective ladder 6 is in an upright position, and each ladder group 61 is folded and close to each other under gravity. At this time, the protective ladder 6 is enclosed with the fence 5 as a whole to ensure the protective performance of the inspection platform 3. When the protective ladder 6 is in the unfolding position, the protective ladder 6 is turned downward, and the innermost ladder group 61 touches the ground. At this time, each ladder group 61 is unfolded and separated from the adjacent ladder group 61 under the reverse force of gravity, so that each crossbar 63 is arranged side by side at intervals to form a ladder for people to step on.

[0030] In order to switch from the folding position to the unfolding position, a pull rope 7 is connected to one of the base ladder groups 61, and a winch 8 cooperating with the pull rope 7 is provided on the maintenance platform 3. The winch 8 drives the pull rope 7 to be retracted and released to drive the protective ladder 6 to switch between the folding position and the unfolding position. Preferably, a reversing wheel 9 cooperating with the pull rope 7 is also provided at the center of the opening on the maintenance platform 3, and the pull rope 7 is hooked and matched with the crossbar 63 of the innermost base ladder group 61. The speed-controlled unfolding and folding of the innermost base ladder group 61 can be achieved to avoid damage caused by rapid impact.

[0031] In order to limit the position of the protective ladder 6 when it is in the folded position, the left and right sides of the opening of the fence 5 are provided with limiting structures for hooking with the protective ladder 6 to vertically limit the protective ladder 6 in the folded position. The limiting structure includes a hook 51 arranged at the edge of the opening of the fence 5, the hook 51 is hingedly assembled on the side wall of the fence 5, and the hinge axis is perpendicular to the opening direction of the opening. The protective ladder 6 is provided with an L-shaped hanging plate 66 that is hooked with the hook 51. In order to ensure the stability of the limit, there are two hooks 51, which are symmetrically arranged on the left and right sides of the opening of the fence 5.

[0032] Of course, in other embodiments, each base ladder group 61 of the protection ladder 6 can also be replaced by a coaxial sleeve between the vertical poles 62;

[0033] In other embodiments, the limiting structure may also be replaced by a latch and a lock hole.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An electric power maintenance device for electric power maintenance, comprising a base frame, a maintenance platform and a lifting mechanism connected between the base frame and the maintenance platform, wherein a fence is provided on the maintenance platform, characterized in that: One side of the fence has a horizontal opening, and the opening is blocked by a protective ladder. The protective ladder has several groups of base ladder groups that are folded and guided to each other, and each base ladder group is nested inside and outside. The outermost base ladder group is hingedly assembled with the side wall of the maintenance platform, and the hinge axis extends horizontally. The protective ladder has a folding position that is arranged upright to enclose the fence to block the maintenance platform on all sides, and also has an unfolding position that is flipped outward and downward around the hinge axis to stretch each base ladder group. A pull rope is connected to one of the base ladder groups, and a winch that cooperates with the pull rope is provided on the maintenance platform. The winch drives the pull rope to be retracted and released to drive the protective ladder to switch between the folding position and the unfolding position. The left and right sides of the opening of the fence are provided with limiting structures that are used to cooperate with the protective ladder hook to limit the protective ladder to the folding position.

2. The power maintenance device for power maintenance according to claim 1, characterized in that: The base ladder group includes two left and right vertical poles arranged side by side at intervals, the two vertical poles are arranged symmetrically, guide grooves are provided on the opposite side walls of the vertical poles, a cross bar for stepping on is connected between the two vertical poles, and the outer side of the vertical poles is connected to a guide block for guiding and assembling with the guide groove of the vertical pole of the outer base ladder group.

3. The power maintenance device for power maintenance according to claim 2, characterized in that: The guide block is a long strip plate structure with a T-shaped cross section.

4. The power maintenance device for power maintenance according to claim 2, characterized in that: The length of the uprights of each ladder group decreases step by step from the outside to the inside.

5. The power maintenance device for power maintenance according to any one of claims 1 to 4, characterized in that: The limiting structure includes a hook arranged at the edge of the opening of the fence, the hook is hingedly assembled on the side wall of the fence, and the hinge axis is perpendicular to the opening direction of the opening. The protective ladder is provided with an L-shaped hanging plate that cooperates with the hook.

6. The power maintenance device for power maintenance according to claim 5, characterized in that: There are two hooks, which are symmetrically arranged on the left and right sides of the opening of the fence.

7. The power maintenance device for power maintenance according to any one of claims 1 to 4, characterized in that: A reversing wheel cooperating with a pull rope is also provided on the maintenance platform at the center of the opening, and the pull rope is hooked and cooperated with the crossbar of the innermost base ladder group.

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