KR20140110406A

KR20140110406A - vertically movable worktable

Info

Publication number: KR20140110406A
Application number: KR1020130024671A
Authority: KR
Inventors: 류제하
Original assignee: 주식회사 인스
Priority date: 2013-03-07
Filing date: 2013-03-07
Publication date: 2014-09-17

Abstract

The purpose of the present invention is to enable various kinds of work to be performed aerially by elevating a platform using a hydraulic cylinder after a worker boards the platform while the platform is fixated to a chamber. Provided is an aerial work platform which is able to secure safety by retaining equilibrium of the platform elevated by wire to maintain balance of the left and right sides of the platform.

Description

Vertically movable worktable

The present invention relates to a high work bench, and more particularly, to an elevator work bench, which is fixed to a chamber, allows an operator to ride on a foot board and elevate the footboard using a hydraulic cylinder, And a safety stand can be ensured by restricting the parallel state of the footstep to be elevated so as to maintain the left and right balance of the footstep.

Generally, when a work is to be performed in a building, a structure or an industrial field, there are problems in working when the work place is at a high altitude higher than a predetermined height from the ground.

Therefore, up to now, when a worker is working at a high altitude, a worker uses a general workbench such as a ladder to work up the work, and so on. In other words, since the activity space is small, the work is not only inconvenient, but also takes a lot of work time and has a lot of safety problems.

In order to solve this problem, a high work bench capable of facilitating work at a high altitude has been developed and used. For example, Korean Patent Registration No. 10-436247 entitled " An electric lift apparatus serving as a mobile work station for indoor work.

In this patent registration No. 10-436247, the 'portable lifting device for indoor work mobile elevator' is composed of a bottom plate, a wheel, a leg support, a center support, a lift, a winch and a power supply.

However, the above-described lifting device has a structure in which the lifting and lowering portion is lifted and lowered by winding the wire by the winch, so that it is difficult to operate the lifting and lowering portion to be located at the correct position. Moreover, in the structure of the loading portion, There is a concern that it is troublesome to install a separate loading box in the loading section in order for the operator to safely move to the heights.

Korean Patent Registration No. 10-0436247, electric lifting device combined with portable elevated work platform for indoor work.

An object of the present invention is to enable a worker to carry out various operations at a high altitude by raising and lowering a foot plate using a hydraulic cylinder on a footboard while being fixed to a chamber, So as to maintain the left and right balances of the footrests, thereby ensuring safety.

According to an aspect of the present invention, there is provided a high work bench for chamber work, the work bench having a hollow structure having left and right posts provided at both ends of a transverse bar at a predetermined distance so as to be fixed to the chamber, A pedestal which is installed so as to be able to ascend and descend between the pedestals and can be carried by an operator; A right and left fixed frame mounted on the frame for fixing the left and right fixed frames, left and right lift frames installed integrally with the left and right fixed frames to raise and lower the left and right posts, Lift means provided inside the post, the lift means comprising left and right hydraulic cylinders in which the cylinder rod is coupled to the left and right posts and a controller for controlling the driving of the hydraulic cylinder; And one end is fixed to the upper end of the left lifting frame so as to maintain a balance of the lifting and lowering foot by the lifting means, and another end is fixed to the right fixing frame to which the lifting base is fixed via the upper, One end fixed to the upper end of the right lift frame and the other end fixed to the left fixed frame where the foot is fixed via the upper and lower portions of the right and left and lower bars, And balance holding means composed of wire rollers provided on the upper and lower ends of the left and right posts so that the first and second wires can pass through the upper and lower portions of the left and right posts, .

The elevating means includes vertical guide rollers and horizontal guide rollers on both side outer sides of the left and right lift frames, and the vertical guide rollers and the horizontal guide rollers are guided on the inner surfaces of the left and right posts when the left and right lift frames lift So that it is possible to prevent shaking of the light emitting diode.

The protruding bar is provided at both ends of the transverse bar to detect whether a person or an object enters the lower part of the foot by installing an entry detection sensor on the protruding bar. When an entry signal is detected by the entry detection sensor, So that the lifting and lowering of the lifting mechanism can be stopped.

And a safety guardrail is detachably installed on the footrest.

The foot plate may be provided with a wedge zone on one side thereof located on the chamber side so as to prevent a foot or an object of an operator from being caught between the chamber and the foot plate.

The present invention allows the operator to carry out various operations at a high altitude by mounting a foot plate on a foot plate using a hydraulic cylinder while being fixed to a chamber, so that the structure is simple and the operation can be made convenient have.

In addition, the present invention has an effect of securing safety by restricting the parallel state of the foot raised and lowered by the wire, thereby maintaining the left and right balances of the foot.

1 is a perspective view of a high work bench according to the present invention,
2 is a front view of a high work bench according to the present invention,
Figure 3 is a side view of a high work bench according to the present invention,
FIG. 4 is a perspective view showing the elevating means provided in the elevating platform according to the present invention,
5 is an enlarged view of an "A"
FIG. 6 is a plan view of FIG. 5,
FIG. 7 is a perspective view showing a lifting frame and a hydraulic cylinder in a lifting unit provided in a high work platform according to the present invention,
FIG. 8 is a perspective view showing only a balance maintaining means provided in a high work platform according to the present invention,
Fig. 9 is an enlarged view of the portion "B" in Fig. 8,
Fig. 10 is an enlarged view of the "C" part of Fig. 8,
Fig. 11 is a front view of Fig. 8,
12 is a perspective view showing a state in which a high work bench according to the present invention is fixed to a chamber,
Fig. 13 is a view showing the structure of the engagement region with respect to the "D"

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the drawing, the elevating table according to the present invention includes a frame 110. The frame 110 includes left and right posts 112a and 112b of a hollow structure provided at both ends of the transverse bar 113 at a predetermined distance from the chamber 12 so as to be fixed to the chamber 12, And a footrest 114 installed so as to be able to ascend and descend between the worktable 112a and the worktop 112b so that an operator can board the worktable.

At this time, the safety railing 116 can be detachably installed on the footrest 114. The safety railing 116 is detachably installed along the rim of the footrest 114 using a fastener such as a nut .

The foot plate 114 is provided with a wedge area 118 on one side of the chamber 12 so as to prevent the worker's feet or objects from being caught between the chamber 12 and the foot plate 114 I will.

In order to fix the frame 110 to the chamber 12, a fixing piece 111 having a fastening hole is formed on the left and right posts 112a and 112b, and bolts and the like are fastened through the fastening holes of the fastening pieces 111. [ As shown in FIG.

As shown in the drawing, the elevating table according to the present invention includes elevating means 120. The elevating means 120 is provided to raise and lower the footrest 114 and includes left and right fixing frames 122a and 122b for fixing the footrest 114 to the left and right fixing frames 122a and 122b, Left and right elevating frames 124a and 124b installed to be able to move up and down within the left and right posts 112a and 112b and a pair of right and left posts 112a and 112b so as to raise and lower the left and right elevating frames 124a and 124b, Left and right hydraulic cylinders 126a and 126b which are installed inside the hydraulic cylinders 112a and 112b and cylinder rods 127a and 127b are coupled to the left and right posts 112a and 112b and the left and right hydraulic cylinders 126a and 126b for controlling the driving of the left and right hydraulic cylinders 126a and 126b And a controller 128.

The elevating means 120 is provided with vertical guide rollers 142 and horizontal guide rollers 144 at both side portions of the left and right lifting frames 124a and 124b to raise and lower the left and right lifting frames 124a and 124b The vertical guide rollers 142 and the horizontal guide rollers 144 are guided on the inner surfaces of the left and right posts 112a and 112b to prevent the foot plate 114 from being shaken.

The elevating means 120 is provided with protruding bars 153a and 153b at both ends of the transverse bar 113 and an entrance detection sensor 152 is installed on the protruding bars 153a and 153b to thereby control the movement of the foot 114 The control unit 128 controls the controller 128 to stop the lifting and lowering of the footrest 114 when the entrance signal is detected by the entry detection sensor 152. The footrest 114 The left and right hydraulic cylinders 126a and 126b are driven by the controller 128 simultaneously.

As shown in the drawing, the elevating table according to the present invention includes a balance maintaining means 130. The balance holding means 130 is configured to hold the balance by restricting the parallel state of the foot plate 114 raised and lowered by the elevating means 120. One end of the balance holding means 130 is fixed to the upper end of the left lift frame 124a A first wire 132 having one end fixed to the right fixing frame 122b to which the footplate 114 is fixed via the upper and lower portions of the left post 112a and the transverse bar, And one end is fixed to the upper end of the right lift frame 124b so that the other fixed frame 122a is fixed to the left fixed frame 122a to which the footrest 114 is fixed via the upper and lower portions of the right post 112b and the transverse bar And a second wire 134 fixed to the upper ends of the left and right posts 112a and 112b so that the first and second wires 132 and 134 pass through upper and lower portions of the left and right posts 112a and 112b, And lower end respectively It comprised of a wire roller (136a ~ 136d).

At this time, the wire rollers 136a to 136d are provided with wire rollers capable of guiding a single wire at the upper portions of the left and right posts 112a and 112b and two wires at the lower portions of the left and right posts 112a and 112b A guide wire roller is installed.

The elevating table according to the present invention is used for chambers and the left and right hydraulic cylinders 126a and 126b are driven by driving the controller 128 in a state where the fixing pieces 111 provided on the left and right posts 112a and 112b are fixed to the chamber 12, The left and right fixing frames 122a and 122b which are integrally provided on the left and right elevating frames 124a and 124b by moving the left and right elevating frames 124a and 124b to move up and down Thus, the pedestal 114 can be lifted and lowered to allow a worker who rides on the footstep 114 to perform a job for complaints.

At this time, the balance holding means 130 composed of the first and second wires 132 and 134 and the wire rollers 136a to 136d restrains the parallelism of the foot plate 114 when the foot plate 114 is lifted and lowered So that the left and right balance can be maintained. The end portions of the first and second wires 132 and 134 are symmetrically fixed to the left and right elevation frames 124a and 124b and the left and right fixing frames 122a and 122b for raising and lowering the foot plate 114, The balance of the footrest 114 can be maintained by restricting the state where the footrest 114 is lifted and lowered by the first and second wires 132 and 134 to maintain parallelism.

Therefore, the elevated workbench of the present invention can secure the safety of the worker when the worker is aboard a footboard and works at a high altitude. That is, even if the worker moves to one side of the foot plate, the worker can safely work by restricting the lifelong state by maintaining the left and right balance by the wire at all times.

110 - frame 112a, 112b - left and right posts
114 - Scaffolding 116 - Safety railing
120 - lifting means 122a, 122b - left and right fixing frames
124a, 124b - Left and right lift frames 126a, 126b - Left and right hydraulic cylinders
128 - controller 130 - balance maintaining means
132, 134 - first and second wires 136a - 136d - wire rollers

Claims

A high elevation workbench for chamber work,
Left and right posts of a hollow structure provided at both ends of the transversal bar at a predetermined distance so as to be fixed to the chamber, and a footrest which can be elevated and lowered between the left and right posts, Frame;
A right and left fixed frame mounted on the frame for fixing the left and right fixed frames, left and right lift frames installed integrally with the left and right fixed frames to raise and lower the left and right posts, Lift means provided inside the post, the lift means comprising left and right hydraulic cylinders in which cylinder rods are coupled to the left and right posts, and a controller for controlling driving of the hydraulic cylinders; And
One end is fixed to the upper end of the left lifting frame so that the balance of the lifting and lowering foot can be maintained, and the other end is fixed to the right fixing frame to which the footrest is fixed via the upper, lower and transverse bars of the left post And one end is fixed to the upper end of the right lifting frame so that the other end is fixed to the left fixed frame to which the foot is fixed via the upper and lower portions of the right and left and lower bars, And balance holding means composed of wire rollers provided on the upper and lower ends of the left and right posts so that the first and second wires can pass through the upper and lower portions of the left and right posts Features a raised work bench.

2. The image forming apparatus as claimed in claim 1, wherein the elevating means comprises vertical guide rollers and horizontal guide rollers at both side portions of the left and right lift frames, and when the vertical guide rollers and the horizontal guide rollers lift and lower the left and right lift frames, So as to prevent shaking of the footstep to be elevated and lowered.

[2] The apparatus as claimed in claim 1, wherein protruding bars are provided at both ends of the transverse bar, and an entrance sensor is installed on the protruding bar, thereby detecting entry of a person or an object into the lower part of the footing, Wherein the controller controls the elevator so as to stop the elevation of the footrest.

The elevating table according to claim 1, wherein a safety guardrail is detachably installed on the footrest.

5. The elevating table according to any one of claims 1 to 4, wherein the foot plate is provided with a wedge zone on one side thereof located on the chamber side so as to prevent a foot or an object of an operator from being caught between the chamber and the foot plate. .