CN210483512U - Telescopic cat ladder for power transmission line - Google Patents
Telescopic cat ladder for power transmission line Download PDFInfo
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- CN210483512U CN210483512U CN201920721112.4U CN201920721112U CN210483512U CN 210483512 U CN210483512 U CN 210483512U CN 201920721112 U CN201920721112 U CN 201920721112U CN 210483512 U CN210483512 U CN 210483512U
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- 230000008602 contraction Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000009194 climbing Effects 0.000 description 3
- 230000009193 crawling Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
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Abstract
A telescopic ladder stand for a power transmission line comprises a first ladder column and a second ladder column which are symmetrically arranged, wherein the first ladder column and the second ladder column are formed by sleeving a plurality of sections of hollow sleeves, the pipe diameters of the hollow sleeves are sequentially reduced from bottom to top, a plurality of first foot pedals are arranged between the first ladder post and the second ladder post, the telescopic ladder stand for the power transmission line further comprises a hook, the hook comprises a hook body and an installation shaft, the peripheral surface of the installation shaft is provided with a locking groove, the installation shaft is sleeved inside the top ends of the first ladder post and the second ladder post, the top ends of the first ladder post and the second ladder post are provided with a first lock catch matched with the locking groove, the hook is characterized in that a rotating device is arranged in the installation shaft and comprises a movable shaft and an I-shaped body sleeved in the movable shaft, the I-shaped body is fixed in the installation shaft, a steel ball is arranged between the I-shaped body and the movable shaft, and the movable shaft is connected with the hook body. The design is convenient to carry and wide in application range.
Description
Technical Field
The utility model relates to a transmission line field especially relates to a telescopic cat ladder for transmission line, mainly is applicable to the application scope who improves the convenience that the cat ladder carried, improves the cat ladder.
Background
At present, a power transmission line is a heavy asset of a whole power system, daily operation and maintenance of the power transmission line are important ways for maintaining power transmission stability and power grid reliability, a pole tower in the power transmission line plays a key role, a pole tower is also a carrier of an insulator and a conducting ground wire, a fixed crawling ladder on the power transmission line pole tower provides a convenient equal-height means for operators to perform equal-height inspection, detection and maintenance, and if the insulators, the conducting ground wires and the conducting ground wires are maintained and maintained, the fixed crawling ladder needs to climb to the position corresponding to a pole tower body or a cross arm, so that the fixed crawling ladder for the tower climbing of the maintenance operators is installed on the common power transmission line pole tower. At present, a fixed ladder stand of a power transmission line is fixed on an iron tower, so that other non-power maintainers can easily climb a tower and even enter a wire by using the fixed ladder stand, on one hand, the non-power maintainers touch the wire after climbing the tower to cause line outage and even casualties, and the current casualties and power grid faults or outage events caused by the invasion of the iron tower are more and more, so that the illegal climbing behavior of non-power professionals invading the iron tower threatens the operation safety of the power grid; the fixed cat ladder of on the other hand also has the risk of being stolen to make fixed cat ladder destroyed, unable normal operation when making the maintenance work personnel overhaul has influenced work efficiency when increasing work load.
Disclosure of Invention
The utility model aims at overcoming the defect and the problem that carry inconvenience, application scope are narrow that exist among the prior art, providing a telescopic cat ladder for power transmission line that convenient to carry, application scope are wide.
In order to achieve the above purpose, the technical solution of the utility model is that: a telescopic ladder for a power transmission line comprises a first ladder column and a second ladder column which are symmetrically arranged, wherein the first ladder column and the second ladder column are formed by sleeving a plurality of sections of hollow sleeves, the pipe diameters of the hollow sleeves are sequentially reduced from bottom to top, and a plurality of first foot pedals are arranged between the first ladder column and the second ladder column;
the telescopic ladder stand for the power transmission line further comprises a hook, the hook comprises a hook body and an installation shaft, a locking groove is formed in the outer peripheral face of the installation shaft, the installation shaft is sleeved inside the top ends of the first ladder post and the second ladder post, a lock catch matched with the locking groove is arranged on the top ends of the first ladder post and the second ladder post, a rotating device is arranged in the installation shaft and comprises a movable shaft and an I-shaped body sleeved inside the movable shaft, the I-shaped body is fixed in the installation shaft, a steel ball is arranged between the I-shaped body and the movable shaft, and the movable shaft is connected with the hook body.
The tail ends of the first ladder column and the second ladder column are respectively connected with a first hollow tube and a second hollow tube, a second pedal plate is arranged between the top end of the first hollow tube and the top end of the second hollow tube, one end of the second pedal plate is connected with the joint of the first ladder column and the first hollow tube, and the other end of the second pedal plate is connected with the joint of the second ladder column and the second hollow tube.
The telescopic ladder stand for the power transmission line further comprises a balance rod, the balance rod is of an inverted U-shaped structure and comprises a cross rod and vertical rods connected with the two ends of the cross rod, and the cross rod is connected with the tail ends of the first hollow tube and the second hollow tube.
The universal wheels are arranged at the positions, below the first hollow tube and the second hollow tube, of the cross rod.
The tail end of the vertical rod is provided with an anti-skidding foot sleeve.
The outer surface of the hook body is provided with a layer of anti-skid plastic.
The vertical distance between the top end A of the hook body and the top ends B of the first ladder column and the second ladder column is H1, the height of the first ladder column and the second ladder column after contraction is H2, the ratio of H1 to H2 is 1: 3-1: 5, the height of the first ladder column and the second ladder column after stretching is H3, and the ratio of H1 to H3 is 1: 10-1: 15.
The vertical distance between the end of the bent angle C of the hook body and the top end A of the hook body is H4, the vertical distance between the top end A of the hook body and the top ends B of the first ladder column and the second ladder column is H1, the ratio of H4 to H1 is 1: 3-1: 4, and the radius of the bent angle of the hook body is 50-100 mm.
The two ends of the first pedal plate are fixed on the first ladder post and the second ladder post through the second lock catch, the second lock catch comprises a lantern ring and a connecting plate, the lantern ring is sleeved on the outer peripheral surfaces of the first ladder post and the second ladder post, one end of the connecting plate is connected to the end portion of the first pedal plate, the other end of the connecting plate is connected to the outer peripheral surface of the lantern ring, a first groove is formed in the connecting plate, a spring seat and a pin shaft are arranged in the first groove, one end of the pin shaft abuts against the spring seat through a spring, the other end of the pin shaft extends towards the interior of the lantern ring, a locking switch is arranged on the connecting plate, and the locking switch is.
And a binding belt is arranged on the first pedal far away from the hook body in the first pedals.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model relates to a power transmission line is with telescopic cat ladder in the outer peripheral face of installation axle be provided with the locked groove, the installation axle suit is inside the top of a ladder post, No. two ladder posts, the top of a ladder post, No. two ladder posts is provided with the hasp that matches with the locked groove, be provided with rotary device in the installation axle, rotary device includes loose axle and its inner suit's worker shape body, worker shape body fixes in the installation axle, be provided with the steel ball between worker shape body and the loose axle, the loose axle is connected with the coupler body; the couple can be dismantled and can 360 degrees rotations in the above-mentioned design, not only makes telescopic cat ladder convenient to carry, makes telescopic cat ladder be applicable to the transmission line iron tower of various different angles moreover. Therefore, the utility model has the advantages of convenient carrying and wide application range.
2. The utility model relates to a telescopic ladder stand for transmission line, wherein the ends of a first ladder column and a second ladder column are respectively connected with a first hollow tube and a second hollow tube, and a second pedal plate is arranged between the top end of the first hollow tube and the top end of the second hollow tube; the telescopic ladder stand is characterized in that the telescopic ladder stand comprises a telescopic ladder stand body, a hollow pipe is arranged at the tail end of the ladder stand body, and a pedal is arranged at the tail end of the telescopic ladder stand body. Therefore, the utility model discloses the reliability is high, convenient to use.
3. The utility model relates to a balancing pole is the type of falling U structure in telescopic cat ladder for power transmission line, and the balancing pole includes horizontal pole and the montant that is connected with its both ends, and the horizontal pole is connected with the end of hollow tube one number, hollow tube two numbers, increases the balancing pole, has improved telescopic cat ladder's stability; universal wheels are arranged at the positions, below the first hollow tube and the second hollow tube, of the cross rod, and are additionally arranged, so that the convenience of the telescopic ladder stand is further improved; the anti-skidding foot sleeves are arranged at the tail ends of the vertical rods and are additionally arranged, so that the anti-skidding performance of the telescopic ladder stand is improved; be provided with the band on the running-board, after telescopic cat ladder shrink, adopt the band to fasten the running-board, avoid appearing the extension condition when not using or carrying. Therefore, the utility model discloses stability is good, convenient to carry, reliability is high, convenient to use.
4. The utility model relates to a telescopic ladder stand for transmission line, wherein the outer surface of the hook body is provided with a layer of anti-skid plastic, which improves the anti-skid performance of the hook body; the vertical distance between the top end A of the hook body and the top ends B of the first ladder column and the second ladder column is H1, the height of the first ladder column and the second ladder column after contraction is H2, the ratio of H1 to H2 is 1: 3-1: 5, the height of the first ladder column and the second ladder column after stretching is H3, and the ratio of H1 to H3 is 1: 10-1: 15, so that the telescopic ladder stand can meet the structural strength requirement and reduce the dead weight of the telescopic ladder stand; the vertical distance between the end C of the bent angle of the hook body and the top end A of the hook body is H4, the vertical distance between the top end A of the hook body and the top ends B of the first ladder column and the second ladder column is H1, the ratio of H4 to H1 is 1: 3-1: 4, the radius of the bent angle of the hook body is 50-100 mm, and the design enables the hook body to meet the requirement of structural strength and simultaneously reduces the self weight of the hook body. Therefore, the utility model discloses the reliability is high, structural strength is high, light in weight.
5. The utility model relates to a power transmission line is with telescopic cat ladder in the both ends of a running-board fix on a ladder post, No. two ladder posts through No. two hasps, No. two hasps include lantern ring and connecting plate, the lantern ring suit is on the outer peripheral face of a ladder post, No. two ladder posts, be provided with a recess on the connecting plate, be provided with spring holder and round pin axle in the recess, one end of round pin axle supports tight spring holder through the spring, the other end of round pin axle extends towards the lantern ring in, be provided with the locking switch on the connecting plate, the locking switch joint is on No. two recesses on the round pin axle; above-mentioned design has not only improved the structural strength of telescopic cat ladder, can ensure moreover that the condition of sudden shrinkage can not appear in telescopic cat ladder in use, has improved the security performance of telescopic cat ladder. Therefore, the utility model discloses structural strength is high, the security is good.
Drawings
Fig. 1 is the utility model discloses a transmission line is with tensile structure schematic diagram of back of telescopic cat ladder.
Fig. 2 is the utility model discloses a power transmission line is with structure schematic diagram after telescopic cat ladder contracts.
Fig. 3 is a schematic structural view of the middle hook of the present invention.
Fig. 4 is a schematic structural view of the top ends of the first ladder post and the second ladder post of the present invention.
Fig. 5 is a schematic view of the structure of the rotating apparatus in fig. 3.
Fig. 6 is a schematic structural view of the second lock of the present invention.
In the figure: first ladder post 1, No. two ladder posts 2, running-board 3, couple 4, coupler 41, installation axle 42, locked groove 43, rotary device 44, loose axle 441, I-shaped body 442, steel ball 443, hasp 5, No. one hollow tube 6, No. two hollow tubes 7, No. two running-board 8, balancing pole 9, horizontal pole 91, montant 92, universal wheel 93, No. two hasps 10, lantern ring 101, connecting plate 102, recess 103, spring holder 104, round pin axle 105, recess 106 No. two, band 11.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 6, the telescopic ladder for the power transmission line comprises a first ladder column 1 and a second ladder column 2 which are symmetrically arranged, wherein the first ladder column 1 and the second ladder column 2 are formed by sleeving a plurality of sections of hollow sleeves, the pipe diameters of the hollow sleeves are sequentially reduced from bottom to top, and a plurality of first foot pedals 3 are arranged between the first ladder column 1 and the second ladder column 2;
the telescopic ladder stand for the power transmission line further comprises a hook 4, the hook 4 comprises a hook body 41 and an installation shaft 42, a locking groove 43 is formed in the outer peripheral surface of the installation shaft 42, the installation shaft 42 is sleeved inside the top ends of the first ladder post 1 and the second ladder post 2, a first lock catch 5 matched with the locking groove 43 is arranged at the top ends of the first ladder post 1 and the second ladder post 2, a rotating device 44 is arranged in the installation shaft 42, the rotating device 44 comprises a movable shaft 441 and an I-shaped body 442 sleeved in the movable shaft 441, the I-shaped body 442 is fixed in the installation shaft 42, a steel ball 443 is arranged between the I-shaped body 442 and the movable shaft 441, and the movable shaft 441 is connected with the hook body 41.
The tail ends of the first ladder post 1 and the second ladder post 2 are respectively connected with a first hollow tube 6 and a second hollow tube 7, a second pedal plate 8 is arranged between the top end of the first hollow tube 6 and the top end of the second hollow tube 7, one end of the second pedal plate 8 is connected with the joint of the first ladder post 1 and the first hollow tube 6, and the other end of the second pedal plate 8 is connected with the joint of the second ladder post 2 and the second hollow tube 7.
The telescopic ladder stand for the power transmission line further comprises a balance rod 9, the balance rod 9 is of an inverted U-shaped structure, the balance rod 9 comprises a cross rod 91 and vertical rods 92 connected with the two ends of the cross rod 91, and the cross rod 91 is connected with the tail ends of the first hollow tube 6 and the second hollow tube 7.
The end of the vertical rod 92 is provided with an anti-slip foot sleeve.
The outer surface of the hook body 41 is provided with a layer of anti-slip plastic.
The vertical distance between the top end A of the hook body 41 and the top ends B of the first ladder post 1 and the second ladder post 2 is H1, the height of the first ladder post 1 and the second ladder post 2 after contraction is H2, the ratio of H1 to H2 is 1: 3-1: 5, the height of the first ladder post 1 and the second ladder post 2 after stretching is H3, and the ratio of H1 to H3 is 1: 10-1: 15.
The vertical distance between the end C of the bent angle of the hook body 41 and the top end A of the hook body 41 is H4, the vertical distance between the top end A of the hook body 41 and the top ends B of the first ladder post 1 and the second ladder post 2 is H1, the ratio of H4 to H1 is 1: 3-1: 4, and the radius of the bent angle of the hook body 41 is 50-100 mm.
The two ends of the first pedal plate 3 are fixed on the first ladder post 1 and the second ladder post 2 through the second lock catch 10, the second lock catch 10 comprises a lantern ring 101 and a connecting plate 102, the lantern ring 101 is sleeved on the outer peripheral surfaces of the first ladder post 1 and the second ladder post 2, one end of the connecting plate 102 is connected to the end portion of the first pedal plate 3, the other end of the connecting plate 102 is connected to the outer peripheral surface of the lantern ring 101, a first groove 103 is formed in the connecting plate 102, a spring seat 104 and a pin shaft 105 are arranged in the first groove 103, one end of the pin shaft 105 abuts against the spring seat 104 through a spring, the other end of the pin shaft 105 extends towards the lantern ring 101, a locking switch is arranged on the connecting plate 102, and the locking switch is clamped on a second groove.
The first pedal 3 far away from the hook body 41 in the first pedals 3 is provided with a belt 11.
The principle of the utility model is explained as follows:
the design aims to provide a portable and easily-installed ladder for maintenance workers, the top end of the ladder is provided with a detachable hook capable of rotating 360 degrees, the ladder is suitable for power transmission line iron towers with various angles, and meanwhile, the ladder can meet daily use; the couple adopts aluminum alloy material and has a layer of non-slip plastic on the surface, and its bottom has 80mm to be the junction of couple and telescopic cat ladder, and the difference in height of couple top is 120mm with the junction of telescopic cat ladder to the couple, and the bent angle of couple is 70mm apart from the difference in height on couple top. The number of steps of the telescopic ladder stand is 7, the contraction height of the telescopic ladder stand is 0.68m when the telescopic ladder stand is completely contracted, the height of the whole telescopic ladder stand after contraction and expansion is 2m, the overall gross weight is 5.4kg, the main material is a thickened aluminum alloy material, the step pitch of the telescopic ladder stand is 385mm, the width of the pedal is 78mm, and the surface of the telescopic ladder stand achieves the anti-skid effect by adopting an anti-texture design; the bottom end of the shoe cover is provided with an anti-skid foot cover, so that the shoe cover is convenient to fix and prevent skid when in use; the balance rod at the bottom end is also provided with two universal wheels which are convenient to carry to a working place, the universal wheels are made of iron core polyurethane, the diameter of each wheel is 125mm, the width of each wheel is 50mm, and the installation height of each wheel is 202 mm.
The connecting position on the telescopic ladder stand is provided with a lock catch of 5-10 mm, the lock catch is positioned at a position 10-15 mm away from the top end of the telescopic ladder stand, when the telescopic ladder stand is used, the hook is placed in a position corresponding to the telescopic ladder stand, the lock catch can be automatically locked, and the lock catch can be taken out after being unlocked when not needed; when the hook rotates, the steel balls rotate around the I-shaped body, the hook can be adjusted to a required angle, the diameter of the movable shaft is 10-20 mm, the diameter of the I-shaped body is 5-10 mm, and the diameter of the steel balls is 4-15 mm.
Two symmetrical ladder columns are arranged on two sides of the design, each ladder column is formed by sleeving a plurality of sections of hollow sleeves, the pipe diameters of the hollow sleeves are gradually decreased from bottom to top, and a locking assembly is arranged at the joint of the sleeves; when the telescopic ladder stand locking device is used, the telescopic ladder stand unfolding sleeve is sequentially pulled outwards from top to bottom, when the telescopic ladder stand unfolding sleeve reaches a fixed position, the locking assembly is used for locking the last hollow sleeve and the next hollow sleeve after the telescopic ladder stand unfolding, and after the locking assembly is unlocked, all the hollow sleeves are packed in the lowest hollow sleeve because the pipe diameter of the hollow sleeves gradually decreases from bottom to top.
Because telescopic cat ladder is formed for the equipment to in order to ensure that telescopic cat ladder when carrying out the shrink the ladder post on both sides have sufficient distance and avoid simultaneously when the shrink with the stabilizer bar between the collision, increase a section 200 mm's hollow sleeve pipe below first section hollow sleeve pipe, the material is the same with other hollow sleeve pipes, so later can make telescopic cat ladder's first step highly reach 585mm from ground, increase a running-board convenient to use this moment.
A bridle is arranged below the first section of the pedal plate and is mainly used for fastening the pedal plate needing to be retracted when the telescopic ladder is not used, so that the situation that the pedal plate needs to be extended when not used and is carried is avoided.
The advantage of this design does: the ladder stand is telescopic, so that the space required by carrying can be reduced, and the carrying convenience is improved; the universal wheels are arranged at the bottom of the ladder stand, so that maintenance workers can conveniently carry the ladder stand to a working place in different terrains, and the convenience of carrying appliances in regions with poor terrains is improved; the safety lock is arranged in the extension ladder, so that the safety of the extension ladder is improved, and the safety of maintenance personnel during maintenance operation is also improved; the top end of the ladder stand is provided with a detachable hook, so that the ladder stand is not only suitable for a power transmission line tower, but also suitable for daily maintenance and operation; the tower foot ladder has a good prevention effect when being easily stolen and a non-professional person climbs the tower under the condition of being unknowingly; the installation height can reach 2 m-2.5 m.
Example 1:
referring to fig. 1 to 6, the telescopic ladder for the power transmission line comprises a first ladder column 1 and a second ladder column 2 which are symmetrically arranged, wherein the first ladder column 1 and the second ladder column 2 are formed by sleeving a plurality of sections of hollow sleeves, the pipe diameters of the hollow sleeves are sequentially reduced from bottom to top, and a plurality of first foot pedals 3 are arranged between the first ladder column 1 and the second ladder column 2; the telescopic ladder stand for the power transmission line further comprises a hook 4, the hook 4 comprises a hook body 41 and an installation shaft 42, a locking groove 43 is formed in the outer peripheral surface of the installation shaft 42, the installation shaft 42 is sleeved inside the top ends of the first ladder post 1 and the second ladder post 2, a first lock catch 5 matched with the locking groove 43 is arranged at the top ends of the first ladder post 1 and the second ladder post 2, a rotating device 44 is arranged in the installation shaft 42, the rotating device 44 comprises a movable shaft 441 and an I-shaped body 442 sleeved in the movable shaft 441, the I-shaped body 442 is fixed in the installation shaft 42, a steel ball 443 is arranged between the I-shaped body 442 and the movable shaft 441, and the movable shaft 441 is connected with the hook body 41.
Example 2:
the basic contents are the same as example 1, except that:
referring to fig. 1 and 2, the ends of the first ladder post 1 and the second ladder post 2 are respectively connected with a first hollow tube 6 and a second hollow tube 7, a second pedal 8 is arranged between the top end of the first hollow tube 6 and the top end of the second hollow tube 7, one end of the second pedal 8 is connected with the joint of the first ladder post 1 and the first hollow tube 6, and the other end of the second pedal 8 is connected with the joint of the second ladder post 2 and the second hollow tube 7.
Example 3:
the basic contents are the same as example 1, except that:
referring to fig. 1 and 2, the telescopic ladder stand for the transmission line further comprises a balancing rod 9, the balancing rod 9 is of an inverted U-shaped structure, the balancing rod 9 comprises a cross rod 91 and a vertical rod 92 connected with two ends of the cross rod 91, and the cross rod 91 is connected with the tail ends of the first hollow tube 6 and the second hollow tube 7; universal wheels 93 are arranged at the positions, below the first hollow tube 6 and the second hollow tube 7, of the cross bar 91; the end of the vertical rod 92 is provided with an anti-slip foot sleeve.
Example 4:
the basic contents are the same as example 1, except that:
referring to fig. 1 to 3, a layer of anti-slip plastic is arranged on the outer surface of the hook body 41, the vertical distance between the top end a of the hook body 41 and the top ends B of the first ladder post 1 and the second ladder post 2 is H1, the height of the first ladder post 1 after contraction and the height of the second ladder post 2 after contraction is H2, the ratio of H1 to H2 is 1: 3-1: 5, the height of the first ladder post 1 after contraction and the height of the second ladder post 2 after contraction is H3, and the ratio of H1 to H3 is 1: 10-1: 15; the vertical distance between the end C of the bent angle of the hook body 41 and the top end A of the hook body 41 is H4, the vertical distance between the top end A of the hook body 41 and the top ends B of the first ladder post 1 and the second ladder post 2 is H1, the ratio of H4 to H1 is 1: 3-1: 4, and the radius of the bent angle of the hook body 41 is 50-100 mm.
Example 5:
the basic contents are the same as example 1, except that:
referring to fig. 1, 2 and 6, two ends of the first pedal plate 3 are fixed on the first ladder post 1 and the second ladder post 2 through a second lock catch 10, the second lock catch 10 comprises a lantern ring 101 and a connecting plate 102, the lantern ring 101 is sleeved on the outer peripheral surfaces of the first ladder post 1 and the second ladder post 2, one end of the connecting plate 102 is connected to the end of the first pedal plate 3, the other end of the connecting plate 102 is connected to the outer peripheral surface of the lantern ring 101, a first groove 103 is formed in the connecting plate 102, a spring seat 104 and a pin shaft 105 are arranged in the first groove 103, one end of the pin shaft 105 abuts against the spring seat 104 through a spring, the other end of the pin shaft 105 extends towards the interior of the lantern ring 101, a locking switch is arranged on the connecting plate 102, and the locking switch is clamped on a second.
Example 6:
the basic contents are the same as example 1, except that:
referring to fig. 1 to 3, a strap 11 is disposed on the first pedal 3 far from the hook 41 among the first pedals 3.
Claims (10)
1. The utility model provides a telescopic cat ladder for power transmission line, includes ladder post (1) and No. two ladder posts (2) that the symmetry set up, ladder post (1), No. two ladder posts (2) are formed by multisection cavity sleeve pipe suit, and cavity sheathed tube pipe diameter is from up reducing in proper order down, be provided with a plurality of running-boards (3) its characterized in that between ladder post (1) and No. two ladder posts (2):
the telescopic ladder stand for the power transmission line further comprises a hook (4), the hook (4) comprises a hook body (41) and an installation shaft (42), a locking groove (43) is formed in the outer peripheral surface of the installation shaft (42), the installation shaft (42) is sleeved inside the top ends of the first ladder column (1) and the second ladder column (2), a first lock catch (5) matched with the locking groove (43) is arranged at the top ends of the first ladder column (1) and the second ladder column (2), a rotating device (44) is arranged in the installation shaft (42), the rotating device (44) comprises a movable shaft (441) and a tool body (442) sleeved in the movable shaft (441), the tool body (442) is fixed in the installation shaft (42), a steel ball (443) is arranged between the tool body (442) and the movable shaft (441), and the movable shaft (441) is connected with the hook body (41).
2. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: the tail ends of the first ladder post (1) and the second ladder post (2) are respectively connected with a first hollow tube (6) and a second hollow tube (7), a second pedal plate (8) is arranged between the top end of the first hollow tube (6) and the top end of the second hollow tube (7), one end of the second pedal plate (8) is connected with the joint of the first ladder post (1) and the first hollow tube (6), and the other end of the second pedal plate (8) is connected with the joint of the second ladder post (2) and the second hollow tube (7).
3. The telescopic ladder stand for the transmission line according to claim 2, characterized in that: the telescopic ladder stand for the power transmission line further comprises a balance rod (9), the balance rod (9) is of an inverted U-shaped structure, the balance rod (9) comprises a cross rod (91) and vertical rods (92) connected with the two ends of the cross rod (91), and the cross rod (91) is connected with the tail ends of a first hollow tube (6) and a second hollow tube (7).
4. The telescopic ladder for the transmission line of claim 3, characterized in that: the universal wheels (93) are arranged at the positions, below the first hollow tube (6) and the second hollow tube (7), of the cross bar (91).
5. The telescopic ladder for the transmission line of claim 3, characterized in that: the tail end of the vertical rod (92) is provided with an anti-skidding foot sleeve.
6. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: the outer surface of the hook body (41) is provided with a layer of anti-skid plastic.
7. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: the vertical distance between the top end A of the hook body (41) and the top ends B of the first ladder post (1) and the second ladder post (2) is H1, the contracted heights of the first ladder post (1) and the second ladder post (2) are H2, the ratio of H1 to H2 is 1: 3-1: 5, the stretched heights of the first ladder post (1) and the second ladder post (2) are H3, and the ratio of H1 to H3 is 1: 10-1: 15.
8. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: the vertical distance between the end C of the bent angle of the hook body (41) and the top end A of the hook body (41) is H4, the vertical distance between the top end A of the hook body (41) and the top ends B of the first ladder column (1) and the second ladder column (2) is H1, the ratio of H4 to H1 is 1: 3-1: 4, and the radius of the bent angle of the hook body (41) is 50-100 mm.
9. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: two ends of the first pedal (3) are fixed on the first ladder post (1) and the second ladder post (2) through a second lock catch (10), the second lock catch (10) comprises a lantern ring (101) and a connecting plate (102), the lantern ring (101) is sleeved on the outer peripheral surfaces of the first ladder post (1) and the second ladder post (2), one end of the connecting plate (102) is connected with the end part of the first pedal (3), the other end of the connecting plate (102) is connected with the outer peripheral surface of the lantern ring (101), a first groove (103) is arranged on the connecting plate (102), a spring seat (104) and a pin shaft (105) are arranged in the first groove (103), one end of the pin shaft (105) is tightly propped against the spring seat (104) through a spring, the other end of the pin shaft (105) extends towards the interior of the lantern ring (101), and a locking switch is arranged on the connecting plate (102), and the locking switch is clamped on a second groove (106) on the pin shaft (105).
10. The telescopic ladder stand for the transmission line according to claim 1, characterized in that: the first pedal (3) far away from the hook body (41) in the first pedals (3) is provided with a binding belt (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920721112.4U CN210483512U (en) | 2019-05-20 | 2019-05-20 | Telescopic cat ladder for power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920721112.4U CN210483512U (en) | 2019-05-20 | 2019-05-20 | Telescopic cat ladder for power transmission line |
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| CN210483512U true CN210483512U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417672A (en) * | 2021-07-08 | 2021-09-21 | 淮安市中球盾构技术服务有限公司 | Steel sleeve structure for frozen soil tunnel construction |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417672A (en) * | 2021-07-08 | 2021-09-21 | 淮安市中球盾构技术服务有限公司 | Steel sleeve structure for frozen soil tunnel construction |
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