CN210370457U - Safe special ladder for top trimming of trees - Google Patents

Abstract

The utility model discloses a safe special ladder of top is repaiied to trees, including telescopic ladder frame, the top of ladder frame is provided with tree clamp device, and the top both ends of ladder frame are provided with the link that is used for hanging the safety belt respectively, and the bottom of ladder frame is provided with length-adjustable and pricks ground nail. Use the utility model discloses safe special ladder of topping is repaiied to trees can be fixed in the trunk through tree clip device safely on firmly to be provided with the link that is used for hanging the safety belt, further improved operation personnel's safety guarantee, the telescopic is pricked the ground nail and is made this ladder also can use in the place of unevenness, has eliminated the problem that receives the use scene restriction. The safe special ladder for top trimming of trees can greatly reduce the labor intensity, obviously improve the working efficiency and reduce the operation cost. The method can be popularized in a power grid system, the work of trimming under the trimming line and the top and branches of trees outside the sideline can be carried out on a large scale, the hidden danger of a line channel can be eliminated in time, the availability ratio of the line is improved, and the safe and stable operation of the power grid is ensured.

Description

Safe special ladder for top trimming of trees

Technical Field

The utility model relates to an electric power system auxiliary device technical field especially relates to a cleaning device of near trees of transmission line passageway.

Background

Trees growing in the channel of the power transmission line have great influence and harm on the safe operation of the line and need to be cleaned frequently. However, in the process of clearing tree obstacles, some villager owners lack awareness of power supply safety, and due to the benefits of maintenance, the trees are not matched with the clearing work of trees below the conducting wires and outside the sidelines, and the trees are refused to be cut down and only the tops and branches of the trees, especially the trees which are not finished are allowed to be trimmed. In order to ensure the safe and stable operation of the power grid, the trees in the passage corridor need to be eliminated by adopting an operation method of pruning the tops and branches of the trees.

At present, a method for trimming trees by climbing to a proper position by using a common ladder is used most, but the operation method is limited by a field, the bottom and the top of the ladder cannot be fixed and only depends on a special escalator, the ladder shakes during operation, no proper position hanging point is provided for fastening a safety belt for overhead operation personnel, potential safety hazards exist, the working time is increased, and the labor intensity is increased. The tree trimming work efficiency is low, the labor intensity is high, and the tree obstacles have great influence and harm on the safe operation of the line for a long time.

Therefore, a method of using a double-sided aluminum alloy telescopic herringbone ladder for climbing and trimming work gradually appears. When pruning the top and the branches of a tree and when the double-sided aluminum alloy telescopic herringbone ladder is used for climbing up to prune, the lower half part of the ladder needs to be held by a specially-assigned person, and after an aerial worker reaches a proper high-altitude position through the ladder, the tree is pruned by using a saw or a chopper, but the method has the following defects:

1. in terms of height, a typical stair design is adapted to a height of between 2M and 3.2M at a story height. The size of the hole of the telescopic stair is generally in the range of 0.7 m by 1.2 m due to the consideration of volume and flexibility, and the telescopic stair is not suitable for passing large articles.

2. Without the clamp fixing and the safety belt hanging ring. Although a special person holds the ladder body in the ladder climbing operation process, the ladder head is not fixed and only is put on a trunk or a branch, so that the ladder is easy to fall off by shaking in the operation process; no safety belt hanging ring, the safety belt is required to be used in the high-altitude operation specified by the electric safety work regulation, and the safety belt is hung on a firm component.

3. The operation field is limited, and the double-sided aluminum alloy telescopic herringbone ladder is used for climbing and trimming operation and is relatively stable when being used in a flat place because the herringbone ladder is double-sided, otherwise, the ladder can not be stably erected.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a safe special ladder is repaiied on top of trees has solved the safety problem that exists among the prior art to work efficiency has been improved.

In order to achieve the purpose, the following technical scheme is adopted:

the utility model provides a safe special ladder of top is repaiied to trees, includes telescopic ladder frame, the top of ladder frame is provided with tree clamp device, the top both ends of ladder frame are provided with the link that is used for hanging the safety belt respectively, the bottom of ladder frame is provided with length-adjustable's nail of pricking ground.

Furthermore, the tree clamping device comprises an openable hoop mechanism arranged at the top end of the ladder frame and a rope winding mechanism arranged on one ladder column of the ladder frame, the hoop mechanism and the rope winding mechanism are connected through a guide rope, one end of the guide rope is connected with the hoop mechanism, the other end of the guide rope is connected with the rope winding mechanism, the rope winding mechanism is rotated, and the guide rope can drive the hoop mechanism to be opened or closed.

Further, the hoop mechanism comprises a left hoop and a right hoop for clamping the trunk, bases of the left and right hoops are connected with corresponding left and right ladder posts through tension springs respectively, a height difference is formed between the bases of the left and right hoops, racks are arranged on the lower surface of the base of the left hoop, the same racks are arranged on the upper surface of the base of the right hoop, a driving gear capable of being meshed with the two racks is arranged between the two racks, a guide rope is connected to the driving gear, a V-shaped base for supporting the trunk is arranged in a cavity formed between the left and right hoops, the V-shaped base is connected with a supporting seat at the bottom of the left and right hoops through a connecting shaft, sliding blocks are arranged on hoop arms of the left and right hoops, guide rails are arranged on two sides of the V-shaped base respectively, the guide rope is tensioned, and the racks are meshed with the driving gear, the sliding blocks can move on the corresponding guide rails to drive the left and right anchor ears to move oppositely.

Further, the wiring mechanism includes pivot, rope winding wheel, hand wheel, spacing dish, pivot one end is passed the ladder post arm and is stretched into in this ladder post, pivot this end fixed connection rope winding wheel, the centre bore cover of spacing dish in the pivot, hug closely the ladder post outer wall sets up, it evenly is provided with a plurality of spacing holes to prolong the circumferencial direction on the spacing dish, hand wheel fixed connection is in the pivot of relative rope winding wheel one end, the through-hole has been seted up on the hand wheel, be provided with compression spring and spring spacer pin in the through-hole, the pin diameter of spring spacer pin with the diameter of spacing hole is equal, the spring spacer pin can insert locate spacing downthehole, the guide rope wind in on the rope winding wheel, rotate the hand wheel, can be taut or relax the guide rope drives left and right staple bolt is opened or is closed.

Furthermore, prick ground nail and pass through ladder leg fixing base and connect on the ladder post, ladder leg fixing base passes through fixing bolt and ladder post fastening connection.

Furthermore, the ladder frame is an aluminum alloy ladder frame, and is light in weight and convenient to carry.

Compared with the prior art, the utility model discloses following beneficial effect has:

use the utility model discloses safe special ladder of topping is repaiied to trees can be fixed in the trunk through tree clip device safely on firmly to be provided with the link that is used for hanging the safety belt, further improved operation personnel's safety guarantee, the telescopic is pricked the ground nail and is made this ladder also can use in the place of unevenness, has eliminated the problem that receives the use scene restriction. The safe special ladder for top trimming of trees can greatly reduce the labor intensity, obviously improve the working efficiency and reduce the operation cost. The method can be popularized in a power grid system, the work of trimming under the trimming line and the top and branches of trees outside the sideline can be carried out on a large scale, the hidden danger of a line channel can be eliminated in time, the availability ratio of the line is improved, and the safe and stable operation of the power grid is ensured.

Drawings

Fig. 1 is the utility model discloses safe special ladder structural schematic diagram is repaiied on top to trees.

FIG. 2 is a front view of the ladder for top trimming and safety of trees

Fig. 3 is a schematic structural view of the hoop mechanism when opened.

Fig. 4 is a schematic structural view of the hoop mechanism when closed.

Fig. 5 is a schematic structural view of the rope winding mechanism.

Fig. 6 is a front view of the spacing disk.

Reference numerals:

the ladder comprises a ladder frame 10, a left ladder post 11, a right ladder post 12, pedals 13, a tree clamping device 20, a hoop mechanism 21, a left hoop 211, a left rack 2111, a left slider 2112, a right hoop 212, a right rack 2121, a right slider 2122, a left tension spring 213, a right tension spring 214, a driving gear 215, a V-shaped base 216, a connecting shaft 217, a left guide rail 218, a right guide rail 219, a rope winding mechanism 22, a rotating shaft 221, a rope winding wheel 222, a hand wheel 223, a compression spring 2231, a spring limiting pin 2232, a limiting disc 224, a limiting hole 2241, a guide rope 23, a guide rope wheel 231, a hanging ring 30, a ground binding nail 40, a ladder leg fixing seat 41 and a fastening bolt 42.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, a special safety ladder for top trimming of trees comprises a telescopic ladder frame 10, a tree clip device 20 is arranged at the top end of the ladder frame, hanging rings 30 for hanging safety belts are respectively arranged at two ends of the top of the ladder frame, and a ground binding nail 40 with adjustable length is arranged at the bottom end of the ladder frame.

The telescopic ladder frame 10 comprises a left ladder post 11, a right ladder post 12 and a pedal 13 arranged between the two ladder posts, wherein the ladder posts are telescopic ladder posts and the height of the ladder can be adjusted.

The tree clamping device 20 comprises an anchor ear mechanism 21 arranged at the top end of the ladder frame and capable of being opened and closed and a rope winding mechanism 22 arranged on the left ladder column of the ladder frame, the anchor ear mechanism 21 is connected with one end of the guide rope 23, the rope winding mechanism is connected with the other end of the guide rope 23, the guide rope 23 is placed on the rope guide wheel 231, the rope winding mechanism 22 is rotated, and the guide rope 23 can drive the anchor ear mechanism 21 to be opened or closed.

As shown in fig. 3-4, the hoop mechanism 21 includes a left hoop 211 and a right hoop 212, the left and right hoops each include a hoop arm and a base, the bases of the left and right hoops are connected to the corresponding left ladder post 11 and right ladder post 12 through a left tension spring 213 and a right tension spring 214, respectively, there is a height difference between the bases of the left and right hoops, a left rack 2111 is provided on the lower surface of the left hoop base, a right rack 2121 with the same pitch is provided on the upper surface of the right hoop base, a driving gear 215 capable of being engaged is provided between the two racks, the upper end of the driving gear is engaged with the left rack 2111, and the lower end of the driving gear is engaged with the right rack 2121. One end of the guide rope 23 is connected with the driving gear 215, a V-shaped base 216 for supporting the trunk is arranged in a cavity formed between the left and right hoops, the V-shaped base 216 is connected with supporting seats at the bottoms of the left and right hoops through a connecting shaft 217, a left slider 2112 and a right slider 2122 are correspondingly arranged on the hoop arms of the left and right hoops, a left guide rail 218 and a right guide rail 219 are respectively arranged on two sides of the V-shaped base, the guide rope 23 is tensioned, the rack is meshed with the driving gear 215, the sliders can move on the corresponding guide rails to drive the left and right hoops to move oppositely, so that the hoop mechanism is closed and loosened, the guide rope is loosened, under the elasticity of the tension spring, the tension spring pulls the left and right hoops to be mutually far away from the guide rails.

As shown in fig. 5-6, the rope winding mechanism 22 includes a rotating shaft 221, a rope winding wheel 222, a hand wheel 223, and a limiting disc 224, one end of the rotating shaft 221 passes through the left column arm and extends into the left column 11, the end of the rotating shaft is fixedly connected to the rope winding wheel 222, a central hole of the limiting disc 224 is sleeved on the rotating shaft 221 and is arranged to be close to the outer wall of the left column 11, a plurality of limiting holes 2241 are uniformly arranged on the limiting disc 224 along the circumferential direction, the hand wheel 223 is fixedly connected to the rotating shaft opposite to one end of the rope winding wheel, a through hole is formed in the hand wheel 223, a compression spring 2231 and a spring limiting pin 2232 are arranged in the through hole, the pin diameter of the spring limiting pin 2232 is equal to the diameter of the limiting hole 2241, the spring limiting pin 2232 can be inserted into.

In order to enhance the safety guarantee of the operating personnel, hanging rings 30 are respectively arranged at two ends of the top of the ladder frame, and the hanging rings 30 are used for hanging safety belts.

Two ladder posts 11, 12 bottoms are provided with ladder leg fixing base 41 respectively, and the telescopic is pricked ground nail 40 upper end and ladder leg fixing base 41 fixed connection, and ladder leg fixing base 41 cover is established on the ladder post, through fastening bolt 42 fastening connection between ladder leg fixing base 41 and the ladder post, has guaranteed to prick ground nail 40 and has not skidded.

The working process is as follows:

select more suitable ground, if the adjustable ground nail of pricking 40 of unevenness makes the ladder basic level, then clamp the staple bolt mechanism 21 at ladder frame top on the trunk, the operating personnel steps on the ladder to suitable position, hangs the safety belt on link 30, can cut trees.

The operation process of clamping the hoop mechanism 21 on the trunk is as follows: stretch staple bolt mechanism 21 to the same height with the trunk, fixed this height, make the trunk be located V type base 216, rotate hand wheel 223, taut guide rope 23, guide rope 23 draws driving gear 215 to remove, action wheel 215 and the rack toothing of left and right staple bolt, therefore left and right staple bolt moves in opposite directions, the slider removes in the guide rail, make left and right staple bolt closed, after left and right staple bolt hug closely the trunk, insert spacing hole 2241 of spacing dish 224 with spring spacer 2232 on the hand wheel 223, make left and right staple bolt keep closed state.

When the tree clip device is detached from the trunk, the spring limit pin 2232 can be pulled out, the pull rope 23 reversely rotates on the rope winding wheel 222, the driving gear 215 loses external tension force, and meanwhile, the left and right racks are respectively under the elastic action of the left tension spring 213 and the right tension spring 214, so that the racks are meshed with the driving gear, the reverse rotation is realized, the left and right hoops are mutually far away, and the left and right hoops are opened.

The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.

Claims (6)

1. The utility model provides a safe special ladder of top is repaiied to trees which characterized in that: including telescopic ladder frame, the top of ladder frame is provided with tree and presss from both sides the device, the top both ends of ladder frame are provided with the link that is used for hanging the safety belt respectively, the bottom of ladder frame is provided with length-adjustable pricks ground nail.

2. The special safety ladder for topping trees of claim 1, characterized in that: the tree clamping device comprises an anchor ear mechanism which is arranged at the top end of the ladder frame and can be opened and closed and a rope winding mechanism which is arranged on one ladder column of the ladder frame, the anchor ear mechanism and the rope winding mechanism are connected through a guide rope, one end of the guide rope is connected with the anchor ear mechanism, the other end of the guide rope is connected with the rope winding mechanism, the rope winding mechanism is rotated, and the guide rope can drive the anchor ear mechanism to be opened or closed.

3. The special safety ladder for topping trees of claim 2, characterized in that: the hoop mechanism comprises a left hoop and a right hoop for clamping a trunk, bases of the left and right hoops are connected with a corresponding left ladder column and a corresponding right ladder column respectively through tension springs, a height difference is formed between the bases of the left and right hoops, racks are arranged on the lower surface of the base of the left hoop, the same racks are arranged on the upper surface of the base of the right hoop, a driving gear which can be meshed with the two racks is arranged between the two racks, a guide rope is connected on the driving gear, a V-shaped base for supporting the trunk is arranged in a cavity formed between the left and right hoops, the V-shaped base is connected with a supporting seat at the bottom of the left and right hoops through a connecting shaft, slide blocks are arranged on hoop arms of the left and right hoops, guide rails are arranged on two sides of the V-shaped base respectively, the guide rope is tensioned, the racks are meshed with the driving gear, and the slide blocks can move on the corresponding guide rails, and driving the left and right hoops to move oppositely.

4. The special safety ladder for topping trees of claim 3, characterized in that: the wiring mechanism includes pivot, rope winding wheel, hand wheel, spacing dish, pivot one end is passed the ladder column arm and is stretched into in this ladder column, this end fixed connection rope winding wheel of pivot, the centre bore cover of spacing dish in the pivot, hug closely the ladder column outer wall sets up, it evenly is provided with a plurality of spacing holes to extend the circumferencial direction on the spacing dish, hand wheel fixed connection is in the pivot of relative rope winding wheel one end, the through-hole has been seted up on the hand wheel, be provided with compression spring and spring spacer pin in the through-hole, the pin diameter of spring spacer pin with the diameter in spacing hole is equal, the spring spacer pin can insert locate spacing downthehole, the rope guide around in on the rope winding wheel, rotate the hand wheel can take-up or relax the rope guide drives left and right staple bolt is opened or is closed.

5. The special safety ladder for topping trees according to any one of claims 1 to 4, wherein: the ground binding nail is connected to the ladder post through the ladder leg fixing seat, and the ladder leg fixing seat is fixedly connected with the ladder post through a fixing bolt.

6. The special safety ladder for topping trees of claim 1, characterized in that: the ladder frame is an aluminum alloy ladder frame.

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