KR20220009175A - Small size type high place work plate - Google Patents

Abstract

The present invention relates to an ultrasmall high-place work plate capable of having a compact structure to be moved and individually carried to various work sites, and facilitating ascent and descent by a height of within 1m, forward and backward movement and lateral direction adjustment in an indoor area to improve workability on an indoor ceiling part. To achieve the purpose, the ultrasmall high-place work plate includes: a lower cart (10) having moving wheels (11); a lifting link (20) formed in an upper part of the lower cart (10) to form a continual "X"-shaped connection structure so as to be lifted up and down by the operation of a lifting operation means; an upper plate (30) formed in an upper part of the lifting link (20); a foothold plate (40) connected onto the upper plate (30) through a rotary shaft to be rotatable; a rotation driving motor (50) mounted on the upper plate (30) to deliver left and right rotation forces to rotate the foothold plate (40) around a rotary shaft (31); and a safety guardrail (60) provided along the circumference of the foothold plate (40) to prevent a worker from falling.

Description

Ultra-small aerial work platform {SMALL SIZE TYPE HIGH PLACE WORK PLATE}

The present invention relates to a workbench at high altitude, and more particularly, it has a compact structure so that it can be easily carried and moved, and it is possible to easily elevate and lower it to a height of less than 1m and to move forward and backward, so that indoor aerial work can be performed. It relates to an ultra-small aerial work platform that can improve efficiency.

In general, aerial work platforms are equipment used for high-ceiling pipes, ducts, lighting, etc., or for painting, plastering, and installation of high buildings. do.

Looking at the aerial work platform of this type, it is composed of a lower base that is largely supported, a lift installed on the upper end of the lower base and operated according to hydraulic pressure, and a work table installed at the upper end of the lift.

The aerial work is performed by fixing the lower base to the work site in a state where it is moved to the work site using equipment such as a lift, and raising the work stand to a certain height by a lift operation.

However, since most of the aerial work platforms in the prior art have a certain size and weight for outdoor work, it is difficult to move quickly to the work site, and since it is difficult to change the work direction in an elevated state, it is difficult for the operator to improve work efficiency. There was a problem with limitations.

In particular, when cleaning or repairing the ceiling part in a train or inside a building, since the ladder is used, there is a problem in that work fatigue is aggravated by the need to repeat the ascending and descending motions while moving the ladder from time to time.

Republic of Korea Patent Registration No. 1326793 (Registered on Nov. 1, 2013) Korean Patent Registration No. 1635394 (Registered on June 27, 2016)

The present invention has been proposed to improve the problems in the prior art, and by providing a structure of a high-altitude workbench with an improved structure that is easy to move indoors and carry individually and easy to operate in left and right directions by forming a compact structure, The purpose is to improve the efficiency of high-place work with a height of about 1m inside or inside a building.

Aerial workbench of the present invention for achieving the above object, the lower bogie provided with moving wheels; an elevating link configured on the upper portion of the lower bogie and forming a continuous “X”-shaped connection structure so that elevating and lowering driving is achieved by the operation of the elevating driving means; an upper plate configured on the upper portion of the elevating link; a foot plate configured to be rotatably connected to a rotation shaft on the upper plate; a rotation driving motor mounted on the upper plate to transmit left and right rotational forces for rotating the scaffold plate about the rotation axis; a safety handrail provided along the periphery of the scaffold plate to prevent a worker from falling; It is characterized in that it constitutes a configuration comprising a.

In addition, the elevating driving means is characterized in that it is composed of an elevating drive motor configured to be connected to the elevating link, and a rack gear of a certain length configured to have an upper end connected to one side of the elevating link while gear meshing with the elevating drive motor is made.

In addition, on the upper surface of the upper plate, a guide bearing for stably supporting the rotation of the foot plate is configured along the guide rail.

In addition, the lower bogie is configured with a forward driving motor and a reverse driving motor for transmitting forward and backward driving force through a driving chain to the moving wheel, respectively, and a compression spring is configured on one side of the moving wheel.

The miniature aerial work platform of the present invention has a compact and compact structure that can be raised and lowered within a height range of less than 1 m, so that it can be moved to various indoor work sites such as trains, and repair and cleaning work on the ceiling can be easily performed. shows an effect.

In addition, it is possible to easily adjust the forward and backward and left and right directions, thereby showing the advantage of improving workability.

1 is a structural diagram of an elevated workbench according to an embodiment of the present invention.
Figure 2 is a perspective view of the upper plate and the scaffold plate portion of the present invention.
3 is a plan view of the upper plate structure of the present invention.
4 and 5 is a plan view of the state when the left and right rotation of the scaffold plate in the present invention.
Figure 6 is a state diagram of the present invention when descending the aerial work platform.
7 is a plan view of the lower bogie of the present invention high-altitude workbench.
8 is a detailed structural view of part A of FIG. 7 .
9 is a diagram illustrating a state in which the power transmission cut-off of the part A of FIG. 7 is separated.
10 is an enlarged cross-sectional view of the main part of a high-altitude workbench according to another embodiment of the present invention.
11 and 12 are cross-sectional structural views of a lower end of a rack gear according to another embodiment of the present invention.

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

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art.

Accordingly, the shape of the components expressed in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same components in each drawing are sometimes illustrated with the same reference numerals. In addition, detailed descriptions of functions and configurations of known technologies that may unnecessarily obscure the gist of the present invention may be omitted.

First, the structure of the ultra-small aerial work platform according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9 .

The miniature aerial work platform in this embodiment is configured with a lower bogie 10 having a moving wheel 11 and an upper portion of the lower bogie 10 so that the elevating drive is continuously performed by the operation of the elevating driving means. A lifting link 20 forming an "X"-shaped connection structure, an upper plate 30 formed on the upper portion of the lifting link 20, and a rotatably rotating shaft connected to the upper plate 30 A scaffold plate 40 and a rotation driving motor 50 mounted on the upper plate 30 to transmit left and right rotational forces for rotating the scaffold plate 40 about the rotation shaft 31; It is provided along the periphery of the scaffold plate 40 to form a safety handrail 60 to prevent a worker from falling.

In particular, the elevating driving means includes an elevating drive motor 25 connected to the elevating link 20 and an upper end connected to one side of the elevating link 20 while gear meshing with the elevating drive motor 25 is formed. It can be seen that the rack gear 26 is configured.

That is, the force in the linear direction is transmitted to the rack gear 26 that is gear-engaged with the pinion gear configured on the motor shaft by the forward/reverse driving of the elevating drive motor 25 , and accordingly, the upper end of the rack gear 26 . The lifting and lowering driving of the elevating link 20 connected to is made.

In addition, it can be confirmed through FIG. 3 that a guide bearing 32 for stably supporting the rotation of the scaffold plate 40 around the rotation shaft 31 is configured along the guide rail 33 on the upper surface of the upper plate 30 . can

In addition, as shown in FIG. 7 , the lower bogie 10 includes a forward driving motor 12 and a reverse driving motor 13 for transmitting forward and backward driving force through the driving chain 14 to the moving wheel 11 , respectively. .

At this time, an auxiliary sprocket 15 for transmitting the power of the drive chain 14 is provided on the drive shaft 11a provided on the both sides of the moving wheels 11, and a connecting pin 16a is provided on one side of the drive shaft 11a. The power transmission coupling 16 is configured, and the power transmission coupling 16 has an elastic pressing force applied by a compression spring 17, and a computerized bolt 18 is installed on one side of the power transmission coupling 16. It is configured to be connected, and it can be seen through FIGS. 8 and 9 that the control handle 19 for the linear flow of the computerized bolt 18 is connected by screw engagement at the end of the computerized bolt 18 .

Let's take a look at the effects of the operation of the present invention ultra-small aerial work platform having such a configuration.

Since the moving wheel 11 is configured on the lower bogie 10 of the high-place work table of the present invention, it is easy to move to the work site, and the lifting and lowering operation using a wired/wireless controller (not shown) is made easy. be able to

That is, when the lift drive motor 25 is operated while the operator is on the scaffold plate 40 after the high-place work platform is moved to the work site, the lift link 20 is raised by the drive of the rack gear 26 . As the driving is performed, the upper plate 30 and the foot plate 40 are raised to a predetermined height.

When the rotation driving motor 50 is operated according to the working position in the upward driving state as described above, the driving force of the rotation driving motor 50 is transmitted to the rotation shaft 31 in which the gear meshing is made, and accordingly, the footrest The plate 40 is rotated at a predetermined angle in the left and right directions as shown in FIGS. 4 and 5 about the rotation shaft 31 .

In particular, in the process of the rotation operation of the scaffold plate 40, the scaffold plate 40 is supported by the guide bearing 32 and the guide rail 33 provided on the upper plate 30 at the bottom. Stable rotation can be achieved.

And, when the work at height is completed, the lowering operation of the lifting link 20 through the operation of the lifting driving motor 25 is again made as in FIG. 6 , so that the operator can safely return to the ground.

On the other hand, the forward and backward operation of the aerial platform is made by driving the first driving motor 12 and the second driving motor 13 mounted on the lower bogie 10 , and the motor driving force is transmitted to the wheels through the driving chain 14 . It is transmitted to the drive shaft 11a to rotate the moving wheel 11, and at this time, since the compression spring 17 is configured on one side of the wheel drive shaft 11a, power transmission can be made more effectively.

In addition, when the lower bogie 10 rotates left and right, one drive motor of the first and second drive motors 12 and 13 is driven forward and the other drive motor is stopped or driven backward, as if the compass As it rotates, the direction rotation of the bogie can be made smoothly at the same position.

And, if you want to move to another workplace without operating this equipment, if you turn the control handle 19 in one direction, the computer bolts 18 on both sides move in a straight line in the mutual approach direction. In the state of 8, as the power transmission coupling 16 moves as shown in FIG. 9, the connecting pin 16a is separated from the auxiliary sprocket 15, and the drive shaft 11a and the drive chain 14 are in a power connection state between each other. will be released.

Therefore, the rotation of the moving wheel 11 is free, so that the movement of the workbench can be made easily.

Therefore, the ultra-small aerial work platform of the present invention has a compact and compact structure that can be raised and lowered within a height range of 1 m, thereby exhibiting the effect of being able to move to various work sites and work at high altitude quickly.

In addition, it is possible to easily adjust the forward and backward and left and right directions, thereby showing the advantage of improving workability.

10 is a view showing a configuration according to another embodiment of the present invention, the lower portion of the foot plate 40, the exposure prevention brush 41 for preventing the exposure of the gap between the upper plate 30 and the inflow of foreign substances It can be seen that is provided along the edge portion.

When such a configuration is achieved, the exposure prevention brush 41 prevents the occurrence of a gap between the upper plate 30 and the upper plate 30, thereby preventing the occurrence of internal contamination due to the inflow of external substances and the occurrence of failure of the guide bearing 32 .

In addition, it shows the advantage that foreign matter can be automatically removed from the surface of the upper plate 30 according to the contact of the exposure prevention brush 41 in the rotation process of the foot plate 40 .

11 and 12 show another embodiment of the present invention, a spherical buffer ball 70 made of an elastic material such as sponge or urethane is coupled to the lower end of the rack gear 26, and the rack A seating groove 27 for seating the buffer ball 70 is formed in the gear 26, and a screw fastening groove 28 is formed in the seating groove 27, and the buffer ball 70 corresponding thereto is provided with a screw. The protrusion 71 is configured to protrude, and the core material 71a connected to the screw protrusion 71 is embedded in the center of the buffer ball 70 .

In addition, a protective coating layer 72 for preventing cracks is coated on the surface of the buffer ball 70, and the protective coating layer 72 is 40 to 60% by weight of silica resin, 10 to 30% by weight of aluminum oxide, 1 to 1 to cobalt oxide 20% by weight, 1 to 10% by weight of polycarbonate resin, 1 to 10% by weight of carbon black, and 1 to 10% by weight of iron trioxide to achieve a mixed composition.

When the buffer ball 70 is configured as described above, it is possible to buffer and protect the impact caused by contact with surrounding structures or workers caused by the lower end of the rack gear 26 being exposed to the outside during the elevating and lowering driving process of the workbench. .

In particular, the buffer ball 70 can be easily attached and detached by the screw fastening groove 28 and the screw protrusion 71 configuration, so that it can be removed and replaced easily as needed, and the inner core material Durability by (71a) can be strengthened.

In addition, since the protective coating layer 72 is coated on the surface, it exhibits the advantage of preventing deformation or cracking due to surface friction. Among the mixed components, aluminum oxide and cobalt oxide prevent surface oxidation and discoloration of the coating layer, Polycarbonate resin enhances strength, carbon black improves heat resistance, and iron trioxide exhibits advantages of improving surface glossiness according to activation of silica resin.

And, although specific embodiments of the present invention have been described and illustrated in the above, it is obvious that the structure of the aerial work platform of the present invention may be variously modified and implemented by those skilled in the art.

For example, in the above embodiment, the configuration of the drive motor and the rack gear as the elevating drive means has been described and illustrated, but various means such as a cylinder may be applied if necessary.

Accordingly, such modified embodiments should not be individually understood from the spirit or scope of the present invention, and such modified embodiments should be included within the appended claims of the present invention.

10: lower bogie 11: moving wheel
12: first driving motor 13: second driving motor
14: drive chain 15: auxiliary sprocket
16: power transmission coupling 17: compression spring
18: computerized bolt 19: control handle
20: elevating link 25: elevating drive motor
26: rack gear 30: upper plate
31: rotation shaft 32: guide bearing
33: guide rail 40: foot plate
50: rotation drive motor 60: safety handrail

Claims (7)

a lower bogie 10 provided with a moving wheel 11;
an elevating link 20 configured on the upper part of the lower bogie 10 and forming a continuous "X"-shaped connection structure so that elevating driving is made by the operation of the elevating driving means;
an upper plate 30 configured on the upper part of the elevating link 20;
a footrest plate 40 configured to be rotatably connected to a rotation shaft on the upper plate 30;
a rotation driving motor 50 mounted on the upper plate 30 to transmit left and right rotational forces for rotating the scaffold plate 40 about the rotation shaft 31;
a safety handrail 60 provided along the periphery of the footrest plate 40 to prevent a worker from falling;
Ultra-small aerial workbench, characterized in that it comprises a configuration. The method according to claim 1,
The elevating driving means includes a elevating drive motor 25 connected to the elevating link 20 and a rack gear of a certain length configured such that the upper end is connected to one side of the elevating link 20 while gear meshing with the elevating drive motor 25 is made. (26) Ultra-small height workbench, characterized in that consisting of. The method according to claim 1,
On the upper surface of the upper plate (30), a guide bearing (32) for stably supporting the rotation of the foot plate (40) is configured along the guide rail (33). The method according to claim 1,
The lower bogie 10 has a first driving motor 12 for transmitting forward and backward driving force through a driving chain 14 to the left moving wheel 11 and a driving chain 14 to the right moving wheel 11 through A second drive motor (13) for forward and backward driving force transmission is configured, respectively. 5. The method according to claim 4,
An auxiliary sprocket 15 for transmitting the power of the drive chain 14 is provided on the drive shaft 11a provided on the both sides of the moving wheels 11, and a connecting pin 16a is provided on one side of the drive shaft 11a. A transmission coupling 16 is configured, and an elastic pressing force is applied to the power transmission coupling 16 by a compression spring 17, and a computerized bolt 18 is connected to one side of the power transmission coupling 16. and a control handle (19) for linear flow of the computerized bolt (18) is connected to the end of the computerized bolt (18) by screw engagement. The method according to claim 1,
A small height workbench, characterized in that the exposure prevention brush 41 is provided along the edge of the foot plate 40 to prevent the intrusion of foreign substances while preventing the exposure of the gap between the scaffold plate 30 and the upper plate 30. The method according to claim 1,
A spherical buffer ball 70 made of an elastic material is coupled to the lower end of the rack gear 26, and a seating groove 27 for seating the buffer ball 70 is formed in the rack gear 26, A screw fastening groove 28 is formed in the seating groove 27, and a screw protrusion 71 is protruded from the buffer ball 70 corresponding thereto, and a screw protrusion 71 is provided at the center of the buffer ball 70. The core material 71a connected to the is buried, and a protective coating layer 72 for preventing cracks is coated on the surface of the buffer ball 70, and the protective coating layer 72 is made of silica resin, aluminum oxide, cobalt oxide, poly An ultra-compact high altitude workbench, characterized in that it has a mixed composition of carbonate resin, carbon black, and iron trioxide.

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