CN212716393U - Stable insulating extension ladder - Google Patents
Stable insulating extension ladder Download PDFInfo
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- CN212716393U CN212716393U CN202021792277.XU CN202021792277U CN212716393U CN 212716393 U CN212716393 U CN 212716393U CN 202021792277 U CN202021792277 U CN 202021792277U CN 212716393 U CN212716393 U CN 212716393U
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Abstract
The utility model belongs to the technical field of electric power. Stable insulating extension ladder, including insulating extension ladder, its characterized in that: the upper end part of the insulating extension ladder is fixedly provided with a top self-holding pole device, and the lower end part of the insulating extension ladder is fixedly provided with a bottom self-holding pole device; the top self-holding pole device comprises an upper right hoop device, an upper left hoop device, an upper right cap type connecting piece, an upper left cap type connecting piece, an upper U-shaped self-adaptive rubber pad, an upper tensioner and an upper belt; the mounting shaft on the mounting frame of the upper tensioner is fixed at the front end part of the upper right hoop device by a bolt, and the left end part of the upper belt is fixed at the front end part of the upper left hoop device by a bolt; the bottom self-holding pole device comprises a telescopic fixing support, a lower right hoop device, a lower left hoop device, a lower U-shaped self-adaptive rubber pad, a lower tightener and a lower belt. Because the insulating extension ladder adopts the top to embrace the pole device certainly, the bottom is fixed with the wire pole from embracing the pole device certainly, and insulating extension ladder's stability is fine, the security is also fine.
Description
Technical Field
The utility model belongs to the technical field of electric power, concretely relates to stable insulating extension ladder.
Background
According to the national standard GB/T3608-2008 'high-place operation classification regulation': "work at a high place where there is a possibility of falling by 2 meters or more (including 2 meters) from the falling height reference surface is called high place work. "and salvage in the city, the transformer substation overhauls, the in-process of checking meter, the operation personnel often meet the aerial work, and the frequency that adopts the ladder is more, and general ladder (like insulating extension ladder) leans on wire pole (or equipment rack, building), because the top and the bottom of insulating extension ladder can not reliably be fixed, lead to insulating extension ladder to appear bottom slip easily, the ladder turns on one's side phenomenons such as, brings certain potential safety hazard.
Disclosure of Invention
An object of the utility model is to provide a stable insulating extension ladder, this ladder stability is good.
In order to realize the purpose, the utility model adopts the technical scheme that: stable insulating extension ladder, including insulating extension ladder, its characterized in that: the upper end part of the insulating extension ladder is fixedly provided with a top self-holding pole device, and the lower end part of the insulating extension ladder is fixedly provided with a bottom self-holding pole device;
the top self-holding pole device comprises an upper right hoop device, an upper left hoop device, an upper right cap type connecting piece, an upper left cap type connecting piece, an upper U-shaped self-adaptive rubber pad, an upper tensioner and an upper belt; the right end of the upper U-shaped self-adaptive rubber pad is fixedly connected with the upper right cap type connecting piece, the left end of the upper U-shaped self-adaptive rubber pad is fixedly connected with the upper left cap type connecting piece, the bottom surfaces of the upper right cap type connecting piece and the upper left cap type connecting piece are respectively provided with a ladder rod inserting hole, the upper right cap type connecting piece is inserted into the upper end part of the right ladder rod of the insulating extension ladder through the ladder rod inserting hole, and the upper left cap type connecting piece is inserted into the upper end part of the left ladder rod of the insulating extension ladder through the ladder rod inserting hole; the front surface of the upper U-shaped self-adaptive rubber pad is provided with an inner concave arc surface; the upper right hoop device is tightly embraced on the upper end part of a right ladder rod of the insulating extension ladder through bolts, the upper left hoop device is tightly embraced on the upper end part of a left ladder rod of the insulating extension ladder through bolts, a mounting shaft on a mounting frame of the upper tensioner is fixed on the front end part of the upper right hoop device through bolts, the left end part of the upper belt is fixed on the front end part of the upper left hoop device through bolts, and the right end part of the upper belt is inserted into a jack of a rotating shaft of the upper tensioner;
the bottom self-holding pole device comprises a telescopic fixing support, a lower right hoop device, a lower left hoop device, a lower U-shaped self-adaptive rubber pad, a lower tightener and a lower belt; the lower right hoop device is tightly embraced on the lower end part of a right ladder rod of the insulating extension ladder through a bolt, the lower left hoop device is tightly embraced on the lower end part of a left ladder rod of the insulating extension ladder through a bolt, the front end part of the lower right hoop device is fixedly connected with the rear right end part of the telescopic fixed support through a bolt, the front end part of the lower left hoop device is fixedly connected with the rear left end part of the telescopic fixed support through a bolt, the lower U-shaped self-adaptive rubber pad is fixed at the front end part of the telescopic fixed support, and an inwards-concave arc-shaped surface is arranged in front of the lower U-shaped self-adaptive rubber pad; the mounting shaft on the mounting frame of the lower tightener penetrates through the annular hole in the front part of the fixing belt with the annular hole, the rear part of the fixing belt with the annular hole is fixedly connected with the front right end part of the telescopic fixing support through a bolt, and the right end part of the lower belt is inserted into the insertion hole of the rotating shaft of the lower tightener.
And anti-slip teeth are arranged on the inner concave arc-shaped surface of the upper U-shaped self-adaptive rubber pad and the inner concave arc-shaped surface of the lower U-shaped self-adaptive rubber pad.
The utility model has the advantages that: because the insulating extension ladder adopts the top to embrace the pole device certainly, the bottom is fixed with the wire pole from embracing the pole device certainly, and insulating extension ladder's stability is fine, the security is also fine. The insulating extension ladder can be fixed on a telegraph pole, is stable and reliable, does not need a personnel staircase, and particularly can embody the excellent reliability of the telegraph pole erected on a slope; the ladder can be folded and unfolded in a common car, and is light and durable. The ladder is suitable for urban rush repair, transformer station maintenance and meter reading.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the top automatic pole-holding device of the present invention.
Fig. 3 is a schematic structural view of the telescopic fixing bracket of the present invention.
Fig. 4 is a schematic structural view of the bottom self-holding pole device of the present invention.
In the figure: 1-insulating extension ladder, 2-bottom self-holding pole device, 3-top self-holding pole device, 4-right ladder pole, 5-left ladder pole, 6-up and down connecting sleeve, 7-left and right connecting rod, 8-telegraph pole, 9-hand swing rack, 10-up and right hoop device, 11-up and right hat type connecting piece, 12-mounting rack, 13-rotating shaft, 14-up U type self-adapting rubber pad, 15-up and left hat type connecting piece, 16-up and left hoop device, 17-up tensioner, 18-upper belt, 19-mounting shaft, 20-down and right hoop device, 21-down and left hoop device, 22-telescopic fixing rack, 23-fixing belt with annular hole, 24-down tension device, 25-lower belt, 26-down U type self-adapting rubber pad, 27-connecting rod, 28-concave arc surface.
Detailed Description
For better understanding of the present invention, the technical solution of the present invention will be further described below with reference to the following embodiments and accompanying drawings.
As shown in fig. 1-4, the stable insulating extension ladder comprises an insulating extension ladder (or called telescopic insulating ladder) 1, a pole holding device 3 at the top and a pole holding device 2 at the bottom, and is characterized in that: the upper end part of the insulating extension ladder 1 is fixedly provided with a top self-holding pole device 3, and the lower end part of the insulating extension ladder 1 is fixedly provided with a bottom self-holding pole device 2;
the top self-holding pole device 3 comprises an upper right holding pole device 10, an upper left holding pole device 16, an upper right cap type connecting piece 11, an upper left cap type connecting piece 15, an upper U-shaped self-adaptive rubber pad 14, an upper tensioner 17 and an upper belt (such as an oxford belt) 18, wherein the right end of the upper U-shaped self-adaptive rubber pad (namely the rubber pad) 14 is fixedly connected with the upper right cap type connecting piece 11 (can be of an integral structure), the left end of the upper U-shaped self-adaptive rubber pad 14 is fixedly connected with the upper left cap type connecting piece 15 (can be of an integral structure), the bottom surfaces of the upper right cap type connecting piece 11 and the upper left cap type connecting piece 15 are respectively provided with a pole jack, the upper right cap type connecting piece 11 is inserted into the upper end part of a right pole 4 of the insulating telescopic ladder through the pole jack, and the upper left cap type connecting piece 15 is inserted into the upper end part of a left pole 5 of the insulating telescopic; the front surface of the upper U-shaped self-adaptive rubber pad 14 is provided with an inner concave arc surface (or called U-shaped surface, contact surface with the telegraph pole 8; the inner concave arc surface can prevent sliding from side to side); the upper right hoop device 10 is tightly held on the upper end part of a right ladder rod 4 of the insulating extension ladder through bolts, the upper left hoop device 16 is tightly held on the upper end part of a left ladder rod 5 of the insulating extension ladder through bolts, a mounting shaft 19 on a mounting frame 12 of an upper tensioner 17 is fixed on the front end part of the upper right hoop device 10 through bolts, the left end part of an upper belt (such as an oxford belt) 18 is fixed on the front end part of the upper left hoop device 16 through bolts, the right end part of the upper belt 18 is inserted into a jack of a rotating shaft 13 of the upper tensioner 17 (the upper belt 18 can be tightened through a hand-operated hand swing frame 9, the top self-holding rod device 3 is fastened on a telegraph pole, the oxford belt is used for fixing the ladder on the telegraph pole, a locking plate on the upper tensioner 17 is pulled, the hand swing frame is opened, the right end part of the upper belt 18 can be drawn out from the jack of the rotating shaft 13, the upper tensioner 17 is an existing product, a tensioner).
The upper U-shaped self-adaptive rubber pad can automatically fit telegraph poles of various sizes, and can well play a role in skid resistance when leaning against the telegraph poles.
The bottom self-holding pole device 2 comprises a telescopic fixing support 22, a lower right hoop device 20, a lower left hoop device 21, a lower U-shaped self-adaptive rubber pad 26, a lower tensioner 24 and a lower belt (oxford belt) 25; the lower right hoop device 20 is tightly embraced on the lower end part of a right ladder rod 4 of the insulating extension ladder through bolts, the lower left hoop device 21 is tightly embraced on the lower end part of a left ladder rod 5 of the insulating extension ladder through bolts, the front end part of the lower right hoop device 20 is fixedly connected with the rear right end part of the telescopic fixed support 22 through bolts, the front end part of the lower left hoop device 21 is fixedly connected with the rear left end part of the telescopic fixed support 22 through bolts, the lower U-shaped self-adaptive rubber pad 26 is fixed at the front end part of the telescopic fixed support 22 (can be fixed on a connecting rod 27 at the front end part of the telescopic fixed support 22), and an inwards concave arc-shaped surface (or called U-shaped surface, contact surface with a telegraph pole 8; the inwards concave arc-shaped surface can prevent left and right sliding) 28 is arranged in front of the lower U-shaped; the mounting shaft 19 on the mounting frame of the lower tensioner 24 passes through the annular hole at the front part of the fixing band 23 with the annular hole (the right side of fig. 3 is front, the left side is back), the rear part of the fixing band 23 with the annular hole is fixedly connected with the front right end part of the telescopic fixing support 22 through a bolt (or a screw), the right end part of the lower belt 25 is inserted into the jack of the rotating shaft 13 of the lower tensioner 24 { the hand-operated hand swing frame (or called as a second mounting frame) 9 can tighten the lower belt 25 to fasten the bottom self-holding pole device 2 on the telegraph pole, and the oxford belt is used for fixing the ladder on the telegraph pole; the locking plate on the lower tightener 24 is pulled open, the hand swing frame is opened, and the right end part of the lower belt 25 can be pulled out from the jack of the rotating shaft 13, specifically seen in the prior art, the operation video is on the net, and also seen in CN201920397402.8, a tightener }.
The concave arc surface of the upper U-shaped self-adaptive rubber pad (i.e. rubber pad) 14 and the concave arc surface 28 of the lower U-shaped self-adaptive rubber pad (i.e. rubber pad) 26 are both provided with anti-slip teeth.
The telescopic fixing bracket 22 comprises a rear right fixing rod, a rear left fixing rod, a front right telescopic rod, a front left telescopic rod, a connecting rod 27 and a positioning bolt; the inner parts of the rear right fixing rod and the rear left fixing rod are provided with telescopic rod jacks along the front-back direction, the outer side surfaces of the rear right fixing rod and the rear left fixing rod are provided with a plurality of positioning jacks (such as 2-20) along the front-back direction, and the rear right fixing rod and the rear left fixing rod are fixedly connected by connecting rods (the number of the connecting rods can be 1-2, and the number of the connecting rods is 1 in the embodiment); a plurality of positioning jacks (such as 2-20) are arranged on the outer side surfaces of the rear part of the front right telescopic rod and the rear part of the front left telescopic rod along the front-back direction, the front part of the front right telescopic rod is fixedly connected with the front part of the front left telescopic rod through a connecting rod 27 (the number of the connecting rods can be 1-2, in the embodiment, 1 is adopted), the rear part of the front right telescopic rod is inserted into the telescopic rod jack of the rear right fixed rod, and the left end of the right positioning bolt penetrates through the positioning jack of the rear right fixed rod and the positioning jack of the front right telescopic rod (the front right telescopic rod and the rear right fixed rod are fixed; the rear portion of the front left telescopic rod is inserted into the telescopic rod jack of the rear left fixed rod, and the left end of the left positioning bolt penetrates through the positioning jack of the rear left fixed rod and the positioning jack of the front left telescopic rod (the front left telescopic rod and the rear left fixed rod are fixed, and the positioning bolt can adopt a screw rod).
The telescopic fixing bracket 22 is made of high-strength plastic steel and an insulating material. The length of the insulating extension ladder (or called extension ladder) 1 can be adjusted according to the use height, and the included angle between the insulating extension ladder and the ground is kept at about 60 degrees all the time. The safety of the operators on the ladder is ensured.
The hoop device (ladder frame connecting piece) is fixed on the insulating extension ladder, and the joint of the hoop device can rotate to adjust the angle of the fixing frame, can be unfolded when in use, and can be folded in parallel with the insulating extension ladder when in storage (connected by bolts, equivalent to hinging).
The lower U-shaped self-adaptive rubber pad can automatically fit telegraph poles of various sizes, and can well play a role in skid resistance when leaning against the telegraph poles. The tensioner can pull the hand swing frame (or handle) to clamp the oxford belt, so that the hand swing frame is firmly fixed to the telegraph pole. The oxford belt is used for fixing the ladder on the telegraph pole.
The upper right hoop device 10, the upper left hoop device 16, the lower right hoop device 20 and the lower left hoop device 21 are all in the prior art (for example, in the 1 st type, the front end part and the rear end part of 2 arc-shaped open sheets are respectively fixed by bolts, a nearly circular open space is formed between the 2 arc-shaped open sheets, the front end part of the 2 arc-shaped open sheets is also provided with a fixing bolt, in the 2 nd type, the front end part of one open annular sheet is provided with 2 bolts, the hoop device is fixed on a ladder bar by the rear bolts, and the front bolts are used for connecting a tensioner or a telescopic fixing support 22 or a belt, as shown in the figure 4).
The insulating extension ladder 1 comprises a right ladder rod 4, a left ladder rod 5, an upper connecting sleeve 6, a lower connecting sleeve 6 and a left connecting rod 7; the right end and the left end of the left connecting rod 7 are respectively connected with an upper connecting sleeve 6 and a lower connecting sleeve 6; the right ladder rod 4 is composed of a plurality of sections of right short rods (such as 5-30 sections of short rods), the left ladder rod 5 is composed of a plurality of sections of left short rods (such as 5-30 sections of short rods), the adjacent right short rods are connected by an upper connecting sleeve 6 and a lower connecting sleeve 6 at the right end of the left connecting rod 7 (plug-in connection), and the adjacent left short rods are connected by the upper connecting sleeve 6 and the lower connecting sleeve 6 at the left end of the left connecting rod 7 (plug-in connection). The insulating extension ladder 1 is formed by splicing, namely, the length is variable.
The insulating extension ladder 1 is made of light epoxy resin. The ladder is lighter in weight and higher in safety coefficient after being improved, and the problems of clamping hands, falling and the like are solved. The weight of the ladder per meter is about 3.18 kilograms, the weight is greatly lower than that of the original 4 kilograms per meter produced by the yellow square tube, and the defects of heavy weight and inconvenient carrying of the original product are overcome; each meter can bear 200 kilograms of impact force; the elongation can reach 2 meters, 2.5 meters, 3 meters, 3.5 meters, 4 meters, 4.5 meters and 5 meters, and the shortening can reach 60-100 centimeters; and an automatic locking function can be respectively arranged between every two layers, so that the safety of constructors is effectively ensured.
The tensioner (upper tensioner, lower tensioner) is prior art (commercially available), and can also adopt chinese patent: CN201920397402.8 (name: a tensioner).
The using method comprises the following steps: 1. the top of the upper belt 18 on the pole embracing device 3 can be drawn out from the jack of the rotating shaft 13, then the right end of the upper belt 18 bypasses the telegraph pole 8, the right end of the upper belt 18 is inserted into the jack of the rotating shaft 13 of the upper tensioner 17, and the hand swing frame 9 is operated by hand, so that the upper belt 18 can be tightened to the insulating extension ladder 1 and can move upwards along the telegraph pole 8 to be accurate (namely, the upper belt is not too tight); the upper end of the insulating extension ladder 1 is not moved up along the utility pole 8.
2. The telescopic fixing support 22 is adjusted to a proper position, and the included angle of the ladder is about 60 degrees generally; draw telescopic fixed bolster 22 to wire pole department, insert the belt in the strainer around wire pole a week, draw the strainer handle, be fixed in the wire pole with the taunt belt tensioning.
Claims (1)
1. Stable insulating extension ladder, including insulating extension ladder (1), its characterized in that: the upper end part of the insulating extension ladder (1) is fixedly provided with a top self-holding pole device (3), and the lower end part of the insulating extension ladder (1) is fixedly provided with a bottom self-holding pole device (2);
the top self-holding pole device (3) comprises an upper right hoop device (10), an upper left hoop device (16), an upper right cap type connecting piece (11), an upper left cap type connecting piece (15), an upper U-shaped self-adaptive rubber pad (14), an upper tensioner (17) and an upper belt (18); the right end of an upper U-shaped self-adaptive rubber pad (14) is fixedly connected with an upper right cap type connecting piece (11), the left end of the upper U-shaped self-adaptive rubber pad (14) is fixedly connected with an upper left cap type connecting piece (15), the bottom surfaces of the upper right cap type connecting piece (11) and the upper left cap type connecting piece (15) are respectively provided with a ladder rod jack, the upper right cap type connecting piece (11) is inserted into the upper end part of a right ladder rod (4) of the insulating extension ladder through the ladder rod jack, and the upper left cap type connecting piece (15) is inserted into the upper end part of a left ladder rod (5) of the insulating extension ladder through the ladder rod jack; the front of the upper U-shaped self-adaptive rubber pad (14) is provided with an inner concave arc surface; the upper right hoop device (10) is tightly embraced on the upper end part of a right ladder rod (4) of the insulating extension ladder through bolts, the upper left hoop device (16) is tightly embraced on the upper end part of a left ladder rod (5) of the insulating extension ladder through bolts, a mounting shaft (19) on a mounting frame (12) of the upper tensioner (17) is fixed at the front end part of the upper right hoop device (10) through bolts, the left end part of an upper belt (18) is fixed at the front end part of the upper left hoop device (16) through bolts, and the right end part of the upper belt (18) is inserted into a jack of a rotating shaft (13) of the upper tensioner (17);
the bottom self-holding pole device (2) comprises a telescopic fixing support (22), a lower right hoop device (20), a lower left hoop device (21), a lower U-shaped self-adaptive rubber pad (26), a lower tightener (24) and a lower belt (25); the lower right hoop device (20) is tightly embraced on the lower end part of a right ladder rod (4) of the insulating extension ladder through a bolt, the lower left hoop device (21) is tightly embraced on the lower end part of a left ladder rod (5) of the insulating extension ladder through a bolt, the front end part of the lower right hoop device (20) is fixedly connected with the rear right end part of the telescopic fixed support (22) through a bolt, the front end part of the lower left hoop device (21) is fixedly connected with the rear left end part of the telescopic fixed support (22) through a bolt, the lower U-shaped self-adaptive rubber pad (26) is fixed at the front end part of the telescopic fixed support (22), and the front part of the lower U-shaped self-adaptive rubber pad (26) is provided with an inwards concave arc-shaped surface (28); the mounting shaft (19) on the mounting rack of the lower tightener (24) passes through the annular hole at the front part of the fixing belt (23) with the annular hole, the rear part of the fixing belt (23) with the annular hole is fixedly connected with the front right end part of the telescopic fixing support (22) through a bolt, and the right end part of the lower belt (25) is inserted into the insertion hole of the rotating shaft (13) of the lower tightener (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021792277.XU CN212716393U (en) | 2020-08-24 | 2020-08-24 | Stable insulating extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021792277.XU CN212716393U (en) | 2020-08-24 | 2020-08-24 | Stable insulating extension ladder |
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| Publication Number | Publication Date |
|---|---|
| CN212716393U true CN212716393U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021792277.XU Active CN212716393U (en) | 2020-08-24 | 2020-08-24 | Stable insulating extension ladder |
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| CN (1) | CN212716393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877968A (en) * | 2020-08-24 | 2020-11-03 | 国网湖北省电力有限公司咸宁供电公司 | Light self-adaptive pole-holding insulating extension ladder |
| CN115095269A (en) * | 2022-06-28 | 2022-09-23 | 海南电网有限责任公司海南输变电检修分公司 | Novel insulating work platform |
-
2020
- 2020-08-24 CN CN202021792277.XU patent/CN212716393U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877968A (en) * | 2020-08-24 | 2020-11-03 | 国网湖北省电力有限公司咸宁供电公司 | Light self-adaptive pole-holding insulating extension ladder |
| CN115095269A (en) * | 2022-06-28 | 2022-09-23 | 海南电网有限责任公司海南输变电检修分公司 | Novel insulating work platform |
| CN115095269B (en) * | 2022-06-28 | 2023-11-07 | 海南电网有限责任公司海南输变电检修分公司 | Novel insulating operation platform |
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