CN211598471U - Engineering ladder for hydropower station maintenance - Google Patents

Abstract

The utility model discloses an engineering ladder for hydropower station maintenance, which belongs to the technical field of hydropower station maintenance tools. Several engineering ladder units are combined in a nested structure, which can be extended as needed, and shortened after use for easy portability and storage. The hanging elbow at the top can be hung on the outer edge of the maintenance equipment to increase safety; the insulating anti-skid sheath on the outer wall can prevent the engineering ladder from slipping and insulating; the anti-skid steps on the cross brace can prevent the maintenance personnel from getting water on the soles , oil, etc. slip off when climbing. In addition, the bottom diagonal bracing is hinged with the lower end of the engineering ladder, which can make the upper end of the engineering ladder fit firmly with the maintenance equipment, and can form a stable four-point support at the lower end, and the four points can have a certain degree of adjustment on uneven ground. Improved stability. The engineering ladder has a reasonable structure design, good insulation performance, is retractable and easy to carry, has good anti-skid performance, and provides multi-directional safe and reliable support with the upper end hanging and the lower end stable.

Description

A kind of engineering ladder for maintenance of hydropower station

technical field

The utility model belongs to the technical field of hydropower station maintenance tools, in particular to an engineering ladder for hydropower station maintenance.

Background technique

During the operation of the hydropower station, it is necessary to regularly or irregularly carry out the relevant maintenance work of A, B, and C grades for each hydro-generator unit of the hydropower station. From the past experience, various safety problems will occur during the maintenance of the hydropower station. The most prominent problem is the occurrence of casualties caused by maintenance. Due to the complex environment of the hydropower station, there are many equipments involving water, electricity, gas and oil, and due to the complex and diverse shapes of many components, when the maintenance personnel use the ladder to overhaul the hydro-generator unit, the quality of the ladder is unqualified. Or the function of the ladder is insufficient, which leads to safety accidents such as slipping and electric shock that occur when maintenance personnel take the ladder for maintenance. In view of this situation, it is necessary to equip the maintenance personnel of the hydropower station with qualified and fully functional engineering ladders so that the maintenance personnel can complete the maintenance work of the hydropower station more conveniently and safely. At present, the engineering ladders equipped by hydropower stations for maintenance personnel mainly have the following problems: ①The insulation performance is not good, which is easy to cause the danger of electric shock; ②It cannot be retracted and is inconvenient to carry; ③Without reliable fixation, the upper end of the ladder cannot be fixed with the unit or equipment. Cause the ladder to swing and become unstable; ④The middle baffle or steps have no anti-skid function or the anti-skid effect is not good after the soles of the maintenance personnel are stained with water and oil, which is easy to cause the maintenance personnel to slip off the ladder; ⑤It is impossible to stabilize on uneven ground; ⑥People When the word ladder is opened, the upper end cannot be reliably attached to the equipment. The upper end of the straight ladder can be attached, but the lower end is only supported by two points, which is easy to slip.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned defects in the prior art, the purpose of the present utility model is to provide an engineering ladder for hydropower station maintenance, which can be stably supported, is suitable for different equipment maintenance, is easy to carry during expansion and retraction, and avoids safety accidents caused by slippage and electric shock. .

The utility model is realized through the following technical solutions:

The utility model discloses an engineering ladder for maintenance of a hydropower station, which comprises a bottom diagonal brace and a plurality of engineering ladder units nested in the vertical direction. The engineering ladder unit comprises upright columns on both sides. The support is detachable with anti-skid steps; the column in each engineering ladder unit and the column in the adjacent engineering ladder unit adopt a nested structure to realize the expansion and contraction of the engineering ladder. When the engineering ladder is extended, the locking device is used. So that there is no relative movement between adjacent engineering ladder units;

The uppermost engineering ladder unit is connected with a suspension elbow, and the outer wall of the suspension elbow is covered with an insulating anti-skid sheath; the lower end of the engineering ladder for hydropower station maintenance is hinged with the bottom diagonal brace.

Preferably, the locking device includes a bayonet pin fixed on the cross brace and a bayonet pin hole provided on the upright column.

Preferably, the connection between the column and the cross brace is covered with an insulating and anti-skid sheath.

Preferably, a flexible connecting cable capable of limiting the opening angle of the bottom diagonal brace is connected between the lower end of the engineering ladder and the bottom diagonal bracing.

Preferably, a binding strap is connected between the uppermost engineering ladder unit and the lowermost engineering ladder unit, and Velcro is fixed at both ends of the binding strap.

Preferably, the ends of the suspension elbows are provided with insulating anti-skid caps.

Preferably, the bottom of the column of the lowermost engineering ladder unit and the bottom of the bottom diagonal brace are both fixed with insulating anti-skid foot covers.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model discloses an engineering ladder for maintenance of a hydropower station. Several engineering ladder units are combined in a nested structure. When in use, the corresponding length of the engineering ladder unit can be extended as required, and the engineering ladder can be shortened after use to facilitate portability and storage. . The hanging elbow at the top of the engineering ladder can be hung on the outer edge of the maintenance equipment to increase the safety of the engineering ladder; at the same time, the insulating and anti-skid sheath on the outer wall of the hanging elbow can prevent the engineering ladder from slipping and play an insulating role; The anti-skid steps on the support can prevent the maintenance personnel from slipping off when the soles of the feet are stained with water and oil. In addition, the bottom diagonal bracing is hinged with the lower end of the engineering ladder, which can make the upper end of the engineering ladder fit firmly with the maintenance equipment, and can form a stable four-point support at the lower end, and the four points can have a certain degree of adjustment on uneven ground. Improved stability. The engineering ladder has a reasonable structure design, good insulation performance, is retractable and easy to carry, has good anti-skid performance, and provides multi-directional safe and reliable support with the upper end hanging and the lower end stable.

Further, the locking device includes a bayonet fixed on the cross brace and a bayonet hole provided on the upright column. When the construction ladder is extended, the adjacent construction ladder units can be locked through this structure, which is firm, reliable and easy to operate.

Further, the connection between the column and the cross brace is covered with an insulating anti-skid sheath, which can play a non-slip effect on the maintenance equipment on the one hand, and avoid leakage accidents caused by equipment leakage on the other hand.

Further, a flexible connecting cable is connected between the lower end of the engineering ladder and the bottom diagonal bracing, which can limit the opening angle of the bottom diagonal bracing and prevent the engineering ladder from tipping due to an excessively large angle.

Further, a binding strap is connected between the uppermost engineering ladder unit and the lowermost engineering ladder unit, and Velcro is fixed at both ends of the binding strap, which can fix all the engineering ladder units when the engineering ladder is shortened.

Further, the end of the suspension elbow is provided with an insulating anti-skid cap, which can further improve the firmness of the suspension elbow when it is suspending, while preventing sliding and electric shock.

Further, the bottom of the column of the lowermost engineering ladder unit and the bottom of the bottom diagonal brace are fixed with insulating anti-skid foot covers, which can improve the stability of the support.

Description of drawings

1 is a schematic front view of the overall structure of the present utility model;

2 is a schematic side view of the overall structure of the utility model;

Fig. 3 is the structural representation of the locking device of the present invention;

4 is a schematic diagram of the position of the anti-skid step of the present utility model;

Fig. 5 is the top view schematic diagram of the suspension elbow of the present invention;

FIG. 6 is an overall schematic diagram of the utility model when it is extended.

In the picture: 1-insulating anti-skid foot cover, 2-post, 3-insulating anti-skid sheath, 4-locking device, 4-1 is bayonet pin, 4-2 is bayonet hole, 5-slip-slip step, 6-horizontal Bracing, 7-Binding Band, 8-Suspension Elbow, 9-Connecting Device, 10-Insulating Anti-skid Sheath One, 11-Flexible Connecting Cable, 12-Bottom Bracing, 13-Hinging Device, 14-Insulating Anti-skid Cap, 15 -fastener.

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, the present utility model is described in further detail, and its content is to explain rather than limit the present utility model:

As shown in Fig. 1 and Fig. 2, the engineering ladder for the maintenance of the hydropower station of the present invention comprises a bottom diagonal brace 12 and a number of engineering ladder units nested in the vertical direction. A cross brace 6 is fixedly connected, and the connection between the column 2 and the cross brace 6 is covered with an insulating anti-skid sheath 3 . As shown in FIG. 4 , the anti-skid step 5 is detachably fixed on the cross brace 6 by the fastener 15 , which is convenient for replacement when the anti-skid step 5 is seriously worn. The column 2 in each engineering ladder unit and the column 2 in the adjacent engineering ladder unit adopt a nested structure to realize the expansion and contraction of the engineering ladder, as shown in Figure 6, when the engineering ladder is elongated, the adjacent There is no relative movement between the engineering ladder units; a structure of the locking device 4 includes a bayonet pin 4-1 fixed on the cross brace 6 and a bayonet pin hole 4-2 provided on the upright column 2, as shown in FIG. 3 . A binding strap 7 is connected between the uppermost engineering ladder unit and the lowermost engineering ladder unit, and both ends of the binding strap 7 are fixed with Velcro.

As shown in Figure 5, the uppermost engineering ladder unit is connected with a suspension elbow 8 through a connecting device 9. The outer wall of the suspension elbow 8 is covered with an insulating anti-skid sheath 10; the end of the suspension elbow 8 is provided with an insulating anti-skid cap 14.

The lower end of the engineering ladder is hinged with the bottom diagonal brace 12 through the hinge device 13 . The bottom of the column 2 of the lowermost engineering ladder unit and the bottom of the bottom diagonal brace 12 are both fixed with an insulating anti-skid foot cover 1 . A flexible connecting cable 11 that can limit the opening angle of the bottom diagonal brace 12 is connected between the lower end of the engineering ladder and the bottom diagonal brace 12 .

The utility model is further explained below with a specific design example:

Insulation anti-skid foot cover 1 adopts plastic cover, size: (length*width*height*thickness): 60*60*60*2mm.

Column 2 is made of aluminum alloy square tube column, size: a total of 13 sections, the thickness of each column is 2mm, the length, width, height and thickness of the first and second sections are: 58*58*600*mm, the third to the 13th The length, width and height of the column are inconsistent, the length of the third to the 13th section is reduced by 2mm, the width of the first section: 58mm, the length of the second to the 13th section is reduced by 2mm; the height of the first section: 600mm, the first section The length from 2 to 13 is reduced by 20mm one by one.

Insulation and anti-skid sheath 3 is made of plastic sleeve, size: 12 sections in total, the thickness of each plastic sleeve is 1mm, the length, width and height of each plastic sleeve are inconsistent, the length of the first section: 60mm, the length of the second section to the 12th section Decrease 2mm section by section, section 1 width: 60mm, section 2 to section 12 length reduce 2mm section by section; section 1 height: 60mm, section 2 to section 13 length decrease 2mm section by section.

The locking pin 4-1 in the locking device 4 is made of solid round steel, Φ4-5mm.

The anti-skid step 5 is made of plastic material.

Cross brace 6 is made of aluminum alloy square tube, size: 11 sections in total, each cross brace width, height and thickness are the same, width 40mm, height 40mm, thickness 2mm, each cross brace length is inconsistent, the length of the first section: 500mm , the length of section 2 to section 12 is reduced by 10mm one by one.

Bundle 7, size: 40mm wide.

The suspension elbow 8 is made of solid arc round steel, size: Φ6-10mm.

The connecting device 9 adopts hexagonal fixing bolts, size: Φ6-8mm.

Insulation anti-skid sheath 10 adopts insulating plastic sleeve.

The flexible connecting cable 11 adopts a connecting rope.

Bottom diagonal brace 12 adopts aluminum alloy square tube, size: 40*40*800*2mm.

The insulating non-slip cap 14 is made of insulating plastic material.

Fastener 15 adopts fixing screw, Φ4-5mm.

It should be noted that the above is only one of the embodiments of the present invention, and the equivalent changes made by the system described in the present invention are all included in the protection scope of the present invention. Those skilled in the art to which the present invention pertains can substitute the specific examples described in a similar manner, as long as they do not deviate from the structure of the present invention or go beyond the scope defined by the claims, they all belong to the protection scope of the present invention.

Claims (7)

1. An engineering ladder for hydropower station maintenance is characterized by comprising a bottom inclined strut (12) and a plurality of engineering ladder units nested in the vertical direction, wherein each engineering ladder unit comprises stand columns (2) at two sides, a cross strut (6) is fixedly connected between the stand columns (2), and an anti-skidding step (5) is detachably arranged on the cross strut (6); the upright post (2) in each engineering ladder unit and the upright post (2) in the adjacent engineering ladder unit adopt a nested structure to realize the extension and retraction of the engineering ladder, and when the engineering ladder is extended, the adjacent engineering ladder units cannot move relatively through the locking device (4);

the uppermost engineering ladder unit is connected with a suspension elbow (8), and the outer wall of the suspension elbow (8) is sleeved with a first insulating anti-skidding sheath (10); the lower end of the engineering ladder for the hydropower station maintenance is hinged with a bottom inclined strut (12).

2. A ladder as claimed in claim 1, characterised in that the locking means (4) comprise locking pins (4-1) fixed to the cross-brace (6) and locking pin holes (4-2) provided in the uprights (2).

3. The engineering ladder for the hydropower station overhaul according to claim 1, wherein the joint of the upright post (2) and the cross brace (6) is coated with an insulating anti-slip sheath (3).

4. The hydropower station maintenance engineering ladder according to claim 1, wherein a flexible connecting rope (11) capable of limiting the opening angle of the bottom inclined strut (12) is connected between the lower end of the engineering ladder and the bottom inclined strut (12).

5. The engineering ladder for the hydropower station maintenance according to claim 1, wherein a binding belt (7) is connected between the uppermost engineering ladder unit and the lowermost engineering ladder unit, and magic tapes are fixed at two ends of the binding belt (7).

6. A ladder as claimed in claim 1, characterised in that the ends of the suspension elbows (8) are provided with insulating anti-slip caps (14).

7. The hydropower station maintenance engineering ladder according to claim 1, wherein the bottom of the upright post (2) and the bottom of the bottom inclined strut (12) of the lowest engineering ladder unit are both fixed with insulating anti-skid foot sleeves (1).

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