A kind of double ladder of anti-skidding overturning-preventing
Technical field
The invention belongs to fit up technical field of tools, and in particular to a kind of double ladder of anti-skidding overturning-preventing.
Background technique
Double ladder is fit up etc a kind of ascending tool of work for side space, such as roof in the plane, because
It is in use, the ladder bars of front and back and ground constitute an isosceles triangle, it appears that as a herringbone, thus the title of its image
For double ladder, practical double ladder has fixed double ladder and moving herringbone ladder, and fixed double ladder is that people temporarily build tool, living
Dynamic double ladder is that the top of two ladders is connected together with loose-leaf, can be flexible due to it altogether when mobile
Property, therefore be widely used in electrician's operation, the double ladder of early stage is usually what timber made, existing with the development of metal industry
Utilizing aluminum alloy materials more;Aluminium alloy herringbone ladder has light, beautiful, durable feature, and cost is not high, therefore is made extensively
With.
When in use, only two support rods of ladder provide support to original double ladder, and the contact area on ground is small, again
Because the height of ladder is higher, it when in use, may fall in the biggish situation of double swerve, have ladder very big
Insecurity factor, and the pedal of original double ladder is to reduce ladder weight itself, design it is relatively thin, when in use, may
It steps on sliding or tramples unstable, user of service cannot arbitrarily adjust the height of ladder on ladder top when in use there are also double ladder
Degree, needing to stand to some high places is handled on ladder, and risk is higher.
Summary of the invention
The purpose of the present invention is to provide a kind of double ladders of anti-skidding overturning-preventing, former to solve to propose in above-mentioned background technique
There is double ladder when in use, only the two of ladder support rod provides support, and the contact area on ground is small, and because ladder
Height is higher, so when in use, may fall in the biggish situation of double swerve, make ladder have it is very big it is dangerous because
Element, and the pedal of original double ladder is to reduce ladder weight itself, design it is relatively thin, when in use, may step on it is sliding or
Trample unstable, there are also double ladder, user of service cannot arbitrarily adjust the height of ladder, to some on ladder top when in use
High place needs to stand to be handled on ladder, the higher problem of risk.
To achieve the above object, the invention provides the following technical scheme: a kind of double ladder of anti-skidding overturning-preventing, including dynamic branch
Strut fixing seat, pedal, supporting leg and inner rod are provided with expansion bracket above the dynamic support rod fixing seat, described flexible
The top of frame is provided with expansion bracket seat plate, and the middle position of the dynamic support rod fixing seat is provided with support rod shaft, and dynamic
The lower section both ends of support rod fixing seat are provided with dynamic support rod, are provided on the inside of the dynamic support rod and determine support rod, described fixed
Limit band is provided on support rod, the both ends of the limit band are provided with limit band fixing bolt, and the pedal, which is mounted on, determines branch
On strut, the both ends of the pedal are provided with pedal shaft, and the upper surface of pedal is provided with non-slip groove, the dynamic support rod
Bottom end is provided with sliding bolt, and the outside of the sliding bolt is provided with limit sliding rail, and the top of the limit sliding rail is provided with limit
Sliding rail fixing bolt, the supporting leg is mounted on the lower section for determining support rod, and the outer surface of supporting leg is provided with support leg, described
The top of support leg is provided with support leg shaft, and the bottom end of the support leg is provided with support leg base, the expansion bracket seat plate
Top be provided with cushion, and be provided with expansion bracket sliding axle below the right end of expansion bracket seat plate, the expansion bracket sliding axle
Outside is provided with sliding rail, and fixing axle on expansion bracket is provided on the left of the sliding rail, and the both ends of the expansion bracket are provided with flexible
Frame shaft, and hydraulic telescopic rod is provided on the inside of expansion bracket, the bottom end of the hydraulic telescopic rod is provided with hydraulic cylinder, the liquid
The bottom end of cylinder pressure is provided with expansion bracket fixing seat, is provided with fixing axle under expansion bracket above the right end of the expansion bracket fixing seat,
The inner rod is mounted on the two sides of pedal, and the outside of inner rod is provided with sleeve, and the top of the sleeve is provided with handwheel,
The middle position of the handwheel is provided with handwheel shaft, and the hydraulic cylinder and external power supply are electrically connected.
Preferably, it is rotatablely connected between the pedal and dynamic support rod by pedal shaft, the pedal and determines support rod
Rotation connection, the upper surface of the pedal are provided with non-slip groove, the dynamic support rod and determine between support rod by limiting sliding rail
It is slidably connected.
Preferably, described to determine there are two support rod is arranged altogether, and two are determined support rod and are rotatablely connected by support rod shaft,
There are two the dynamic support rod is arranged altogether, and two dynamic support rods are separately mounted to the left and right two below dynamic support rod fixing seat
End, is fixedly connected between the dynamic support rod and dynamic support rod fixing seat by card slot, described to determine between support rod and supporting leg
It is bolted to connection.
Preferably, there are three the support leg is arranged altogether, and three support legs be separately mounted to supporting leg front surface, after
Surface and inner surface are rotatablely connected between the support leg and supporting leg by support leg shaft.
Preferably, it is fixedly connected between the dynamic support rod fixing seat and expansion bracket by expansion bracket fixing seat, it is described to stretch
It is fixedly connected between contracting frame and expansion bracket fixing seat by fixing axle under expansion bracket, the expansion bracket sliding axle and expansion bracket seat plate
Between be slidably connected by sliding rail, between the expansion bracket seat plate and dynamic support rod fixing seat pass through hydraulic telescopic rod transmission connect
It connects.
Preferably, it is fixedly connected between the inner rod and sleeve by handwheel, passes through hand between the handwheel and sleeve
Shaft rotation connection is taken turns, is slidably connected between the inner rod and sleeve by sliding slot.
Compared with prior art, safe and convenient to use the beneficial effects of the present invention are: structure of the invention is scientific and reasonable,
The support leg of multi-direction support is arranged in the bottom end of ladder, and when in use, support leg is opened, and becomes the support range of support leg
Greatly, the contact area with ground becomes larger, and also provides support to the left and right two sides of ladder, prevents ladder from toppling over, by dynamic support
Bar and determine support bar group into ladder support bar, moved when opening, determines the pedal between support rod and open simultaneously, make stair treads
Area becomes larger, and is not easy to step on cunning, while also mitigating the weight of ladder, is moved easily, and an expansion bracket is arranged on ladder top,
It is controlled by hydraulic stem, aloft when operation, if encountering higher operation area, only need to adjust expansion bracket height, be sitting on expansion bracket
Operation improves the safety of operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural schematic diagram of expansion bracket of the present invention;
Fig. 3 is the structural schematic diagram of support rod of the present invention;
In figure: 1- expansion bracket seat plate, 2- move support rod fixing seat, 3- moves support rod, 4- determines support rod, 5- non-slip groove, 6-
Pedal shaft, 7- pedal, 8- limit sliding rail, 9- sliding bolt, 10- limit sliding rail fixing bolt, 11- support leg base, 12- support
Foot, 13- support leg shaft, 14- supporting leg, 15- limit band, 16- limit band fixing bolt, 17- support rod shaft, 18- are flexible
Fixing axle under frame, 19- expansion bracket, 20- expansion bracket fixing seat, 21- hydraulic cylinder, 22- hydraulic telescopic rod, 23- expansion bracket shaft,
Fixing axle, 25- sliding rail, 26- cushion, 27- expansion bracket sliding axle, 28- inner rod, 29- handwheel shaft, 30- set on 24- expansion bracket
Cylinder, 31- handwheel.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of double ladder of anti-skidding overturning-preventing, including dynamic support
The top of bar fixing seat 2, pedal 7, supporting leg 14 and inner rod 28, dynamic support rod fixing seat 2 is provided with expansion bracket 18, expansion bracket
18 top is provided with expansion bracket seat plate 1, and the middle position of dynamic support rod fixing seat 2 is provided with support rod shaft 17, and dynamic
The lower section both ends of support rod fixing seat 2 are provided with dynamic support rod 3, and the inside of dynamic support rod 3, which is provided with, determines support rod 4, fixed to support
Limit band 15 is provided on bar 4, the both ends of limit band 15 are provided with limit band fixing bolt 16, and pedal 7, which is mounted on, determines support rod 4
On, the both ends of pedal 7 are provided with pedal shaft 6, and the upper surface of pedal 7 is provided with non-slip groove 5, and the bottom end of dynamic support rod 3 is set
It is equipped with sliding bolt 9, the outside of sliding bolt 9 is provided with limit sliding rail 8, and the top of limit sliding rail 8 is provided with the fixed spiral shell of limit sliding rail
Bolt 10, supporting leg 14 is mounted on the lower section for determining support rod 4, and the outer surface of supporting leg 14 is provided with support leg 12, support leg 12
Top be provided with support leg shaft 13, the bottom end of support leg 12 is provided with support leg base 11, and the top of expansion bracket seat plate 1 is set
It is equipped with cushion 26, and is provided with expansion bracket sliding axle 27 below the right end of expansion bracket seat plate 1, the outside of expansion bracket sliding axle 27 is set
It is equipped with sliding rail 25, the left side of sliding rail 25 is provided with fixing axle 24 on expansion bracket, and the both ends of expansion bracket 18 are provided with expansion bracket shaft
23, and the inside of expansion bracket 18 is provided with hydraulic telescopic rod 22, the bottom end of hydraulic telescopic rod 22 is provided with hydraulic cylinder 21, hydraulic cylinder
21 bottom end is provided with expansion bracket fixing seat 20, is provided with fixing axle 19 under expansion bracket above the right end of expansion bracket fixing seat 20,
Inner rod 28 is mounted on the two sides of pedal 7, and the outside of inner rod 28 is provided with sleeve 30, and the top of sleeve 30 is provided with handwheel
31, the middle position of handwheel 31 is provided with handwheel shaft 29, and hydraulic cylinder 21 and external power supply are electrically connected.
In order to enable more convenient and non-skid property is more preferable when pedal 7 uses, in the present embodiment, it is preferred that pedal 7 and dynamic
It is rotatablely connected between support rod 3 by pedal shaft 6, pedal 7 is rotatablely connected with support rod 4 is determined, and the upper surface of pedal 7 is provided with
Non-slip groove 5 moves support rod 3 and determines to be slidably connected between support rod 4 by limiting sliding rail 8.
In order to enable two are determined to facilitate rotation between support rod 4, and keep stability between support rod more preferable, the present embodiment
In, it is preferred that determine there are two the total settings of support rod 4, and two are determined support rod 4 and pass through the rotation connection of support rod shaft 17, and branch is moved
There are two strut 3 is arranged altogether, and two dynamic support rods 3 are separately mounted to the left and right ends of dynamic 2 lower section of support rod fixing seat, move branch
It is fixedly connected, is determined solid by bolt between support rod 4 and supporting leg 14 by card slot between strut 3 and dynamic support rod fixing seat 2
Fixed connection.
In order to enable ladder is more stable when in use, it will not topple over, in the present embodiment, it is preferred that support leg 12 is set altogether
There are three setting, and three support legs 12 are separately mounted to the front surface, rear surface and inner surface of supporting leg 14, support leg 12 with
It is rotatablely connected between supporting leg 14 by support leg shaft 13.
In order to enable connecting more stable between dynamic support rod fixing seat 2 and expansion bracket 18, and adjustment expansion bracket is facilitated to sit
The height of plate 1, in the present embodiment, it is preferred that solid by expansion bracket fixing seat 20 between dynamic support rod fixing seat 2 and expansion bracket 18
Fixed connection, is fixedly connected between expansion bracket 18 and expansion bracket fixing seat 20 by fixing axle 19 under expansion bracket, expansion bracket sliding axle
It is slidably connected between 27 and expansion bracket seat plate 1 by sliding rail 25, passes through liquid between expansion bracket seat plate 1 and dynamic support rod fixing seat 2
Telescopic rod 22 is pressed to be sequentially connected.
In order to enable facilitating the length for adjusting the support rod of ladder, and facilitate placement, this implementation when not in use in ladder
In example, it is preferred that be fixedly connected between inner rod 28 and sleeve 30 by handwheel 31, pass through handwheel between handwheel 31 and sleeve 30
Shaft 29 is rotatablely connected, and is slidably connected between inner rod 28 and sleeve 30 by sliding slot.
Hydraulic cylinder 21 in the present invention is that hydraulic energy is changed into mechanical energy, the hydraulic of straight reciprocating motion is done and executes member
Part, its structure is simple, reliable operation, when realizing reciprocating motion, can remove deceleration device from it, and do not have drive gap,
Movement is steady, therefore is used widely in the hydraulic system of various machinery, in single-acting formula hydraulic cylinder, pressure oil only for
One chamber of hydraulic cylinder makes cylinder realize unidirectional motion by hydraulic coupling, and opposite direction, which moves, then to be realized by external force, and double-action hydraulic
The movement of the cylinder piston both direction then passes through the alternating oil inlet of two chambers, completes by the effect of hydraulic coupling.
The working principle of the invention and process for using: after the present invention installs, determining support rod 4 two and strut, dynamic
Support rod 3 slides into suitable position by limiting sliding rail 8, and upper end and the dynamic support rod fixing seat 2 for then moving support rod 3 are fixed,
Support leg 12 is opened by support leg shaft 13, so that supporting leg 14 is had support force to ground four direction, is not easy ladder
It falls, user of service's foot slams pedal 7, and non-slip groove 5 is provided on pedal 7, increases rubbing between pedal 7 and staff's vamp
Power is wiped, anti-sliding stop when staff is climbed on expansion bracket seat plate 1, sits on and carry out operation on cushion 26, when there is eminence to reach
When, by controlling the elongation of hydraulic telescopic rod 22, slide expansion bracket sliding axle 27 on sliding rail 25, to adjust expansion bracket 18
Whole height, staff are sitting on cushion 26 and increase, hydraulic by controlling after operation to the operation of high-rise working area
Telescopic rod 22 is shunk, and declines expansion bracket 18, and then staff is got off by pedal 7, then the dynamic lift upwards of support rod 3
Dynamic, rotation hand wheel 31 makes support rod 3 and determines the contraction of support rod 4, facilitates the placement of ladder.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.