KR101550686B1 - Lifting regulate apparatus of high place working vehicles - Google Patents

Abstract

The present invention relates to a lift truck which includes a moveable bogie, a lift arm which is installed on an upper portion of the bogie and folds up and down, and a workbench provided on the lift arm and provided with a railing and a control device, And an elevation control unit coupled to the railing and controlling the control device so as to limit the elevation of the work table in accordance with an obstacle detection and a phase change, the elevation control device comprising: do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting /

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lifting / lowering control device for a high-performance work car, and more particularly, to a lifting / lowering control device for a high-

Generally, when building such as apartment buildings, buildings, construction materials such as bricks, cement, iron beam, etc. are carried to various floors, while elevators and cranes are used.

However, since the elevator is always fixed in position, the space is limited, and manpower is required when loading and unloading, it is difficult to transport a large cargo, and it is difficult to reduce manpower and work time.

In the case of the crane, the conveying speed is relatively slow, so it is not suitable for carrying the cargo repeatedly or carrying small cargoes repeatedly, and the operator has to adjust the loading and unloading positions of the cargoes at the work site.

Therefore, it is necessary to develop a high-performance work vehicle that can secure the safety of the worker by restricting the height of elevation in accordance with the detection of the obstacle when the cargo is loaded or unloaded.

A prior art related to the present invention is Korean Registration Practice No. 20-0355350 (Registered on Jun. 26, 2004), and the above-mentioned prior art discloses a technique for a complaint worker.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lifting and lowering control apparatus for a high-performance work vehicle in which lifting and lowering of a work platform is restricted in accordance with a phase change of a limit switch.

The elevator according to the present invention includes a bogie capable of elevating and lowering the elevator car according to the present invention, a lift arm installed on an upper portion of the bogie, folded and elevated, and a workbench provided on the elevator, And controlling the height of the lift arm to control an elevation height of the work table, the elevation control device comprising: a control unit coupled to the railing and configured to limit the elevation of the work table according to an obstacle detection and a phase change; And an elevation control unit for controlling the elevation control unit.

The elevation control unit includes a pair of fixing plates protruding from the railing and a pole inserted between the pair of fixing plates and hinged to the pair of fixing plates by a hinge shaft to rotate, A coupling pipe which is coupled to surround the upper outer circumferential surface of the pole and in which a seating space is formed so that a limit switch is seated therein and a coupling pipe which is provided in the coupling pipe and which is connected to the control device, And a detection sensor installed to limit the elevation of the work table.

At this time, the elevation control unit includes a fixing part which is fastened to the hinge shaft and which is formed to fix the rotation position of the pole.

The limit switch includes a sensor module inserted and fixed in the seating space, a sensor installed at a top of the sensor module and protruding outward from an upper portion of the coupling tube, And a power supply line connected to the device and configured to have a variable length within the pole.

In addition, the pole includes a first elevating member coupled to the pair of fixing plates, and a second elevating member inserted into the first elevating member and configured to vary the insertion position through slide movement.

On the other hand, the pole is formed to have a bell-shaped shape and is installed to be bent when an impact due to a collision with an obstacle occurs.

Here, the coupling pipe may include a coupling portion formed therein to correspond to the shape of the corrugated pipe of the pole and being fixed to the pole through rotation in one direction.

According to the present invention, an elevation height of a work platform is fixed in accordance with a phase change of a limit switch, so that an accident that an operator is stuck to an upper portion of a structure on an operation position having a predetermined height can be prevented in advance.

In addition, the present invention has an effect that a worker can easily ascertain whether or not the work platform can be elevated through an installation position of a limit switch hinged on a handrail.

Further, since the electric wire connected to the limit switch is connected to the control device along the inside of the rail, the electric wire can be prevented from being damaged as well as the risk of injury caused by the electric wire can be prevented.

Further, the present invention is not limited to manufacturing and installing a separate device for fixing the elevating position of the work table, but it is possible to fix the elevating height by changing the phase of the existing elevating control unit, It is possible to reduce the cost.

1 is a perspective view schematically showing an elevating and lowering control apparatus for a high-altitude working vehicle according to the present invention.
2 is a perspective view schematically showing the operation of the elevating and lowering control apparatus of the high-altitude working vehicle according to the present invention.
3 is a view showing an elevation control unit for the elevation control device of the elevator car according to the present invention.
4 is a cross-sectional view showing the coupling of the coupling pipe to the elevating control device of the elevating work vehicle according to the present invention.
5 is a cross-sectional view showing a combination of a limit switch for a lifting and lowering control apparatus of a high-performance work vehicle according to the present invention.
6 is a perspective view showing an embodiment of a lifting and lowering control apparatus for a high-performance work vehicle according to the present invention.

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

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving it will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a perspective view schematically showing an elevating and lowering control apparatus for a high-performance work vehicle according to the present invention, and FIG. 2 is a perspective view schematically showing an operation of a elevating and lowering control apparatus for a high-

As shown in Fig. 1, the elevating and lowering control device of the elevator car includes an elevating control unit 100. Fig.

The elevation control unit 100 controls the control device 50 such that the elevation control unit 100 is hinged to the handrail 40 and hinged to limit the elevation of the work platform in accordance with the obstacle detection and the phase change.

First, the elevator car equipped with the elevator control unit 100 is provided with a movable truck 10 and a lift arm 20 installed on the elevator 10 and folded in an 'X' Respectively.

The elevator work car is mounted on the lift arm 20 and includes a workbench 30 having a handrail 40 and a control device 50.

Here, the work table 30 is formed to have a predetermined area to provide a boarding space for an operator, and a railing 40 having a height is installed vertically on the rim.

The work table 30 can be elevated and lowered by operating a control device 50 provided inside the boarding space, and can change and fix the elevation height according to the judgment of the operator.

If the control device 50 of the workbench 30, whose height is fixed due to the carelessness of the operator, is operated irrespective of the operator's intention, the worker may be injured according to the height change of the workbench 30 Since the work position is changed, the work flow can be increased.

To this end, the elevating and lowering control apparatus of the elevator car can solve the above-mentioned problems by installing the elevating control unit 100 hinged on the handrail 40.

The elevation control unit 100 includes a pair of fixed plates 110, a pole 120, a coupling pipe 130, and a sensing sensor 140.

First, the pair of fixing plates 110 protrude from the edges of the railing 40.

The pair of fixing plates 110 may be installed at any one of the corners of the handrail 40. However, if necessary, a plurality of fixing plates 110 may be installed. At any position on the handrail 40, May be installed.

At this time, a pole 120 to be described later is disposed between the pair of fixing plates 110.

The pole 120 is coupled with the pair of fixing plates 110 by a hinge shaft 111 and is formed to rotate.

That is, the pole 120 may be rotated to be in contact with the handrail 40 while being coupled to the pair of fixing plates 110 by the hinge shaft 110, as shown in FIG.

Here, the pole 120 is inserted into the pair of fixing plates 110 and rotated by the hinge shaft 110, but other types of coupling and operation may be performed.

For example, the pole 120 may be formed in a detachable form so as to be inserted into the pair of fixing plates 110 when the work table 30 is lifted or lowered, or may be detached when the work table 30 is lowered It may be formed in a structure in which it is mounted in a lying state.

Meanwhile, a coupling pipe 130, which will be described later, is coupled to the pole 120.

The coupling pipe 130 is coupled to enclose the upper outer circumferential surface of the pole 120 and a seating space A is formed in which the limit switch 150 is seated.

The lift control device of the elevator car hinges the elevation control unit 100 to the railing 40 so that the height of the work platform 30 can be lowered and the elevation control unit 100 ) Can be effectively recognized.

3 is a view showing an elevation control unit for the elevation control device of the elevator car according to the present invention.

As shown in FIG. 3, the elevator control device of the elevator car includes an elevator control unit 100 that controls the control device 50 to limit the elevation of the workbench 30 in accordance with the obstacle detection and the phase change.

The elevation control unit 100 hinges the pole 120 to the pair of fixing plates 110 and rotationally moves the unit 120 in contact with the handrail 40 by the operator so that the elevation / Can be limited.

First, the limit switch 150 is seated in the seating space A of the coupling pipe 130 so that one end of the limit switch 150 protrudes to the outside. When the limit switch 150 is connected to the control device 50 and contacts the obstacle So that the elevation of the work table 30 is restricted.

Thereafter, when the work table 30 is moved to the work position, the pole 120 is moved so as to be in contact with the railing 40 so as to prevent the work table 30 from being lifted or lowered by an external input to the control device 50.

That is, the position of the pole 120 may be changed to shut off the power of the control device 50 in order to prevent the position of the worker from being changed due to carelessness in the work position.

To this end, the coupling pipe 130 is provided with a detection sensor 140 to be described later.

The detection sensor 140 is connected to a control device 50 provided on the work table 30 and senses a phase change and transmits a signal corresponding to the detected change to the control device 50 so that the lift of the work table 30 is limited do.

In other words, the sensing sensor 140 is installed on the coupling pipe 130 and is connected to a separate control unit (not shown), and a control unit (not shown) controls the phase reference input value of the predetermined pole 120, 120 are compared with each other so that the power supplied from the control device 50 is cut off.

As a result, when the elevation control device of the elevator car rotates to move the poles 120 to contact with the railing 40 through the detection sensor 140, The lifting and lowering of the work table 30 can be effectively restricted regardless of the operation due to carelessness of the worker.

If the height of the pole 120 is set upright on the railing 40 in the original state when the elevation height of the work table 30 is to be adjusted, .

Therefore, the elevating control device of the elevator car can easily limit the elevation height of the work table (30) according to the phase change of the pole (120) through the sensing sensor (140) The operable state of the work table 30 can be effectively recognized.

Meanwhile, the elevation control unit 100 can fix the rotation position of the pole 120 through the fixing unit 160, which will be described later.

The fixing part 160 is fastened to the hinge shaft 111 passing through the pair of fixing plates 110 and the pole 120 to effectively fix the rotation position of the pole 120. [

The fixing part 160 is preferably formed of a nut and is fastened to the hinge shaft 111 formed of a thread so that the rotation position of the pole 120 can be easily fixed.

In addition, the pole 120 is formed to have an outer peripheral surface in the form of a corrugated pipe, so that it is bent so as to generate an impact due to collision with the outside.

That is, when the pole 120 comes into contact with a wall surface and a structure having an irregular shape and collides with it, the pole 120 is formed not to break but to be bent at a predetermined angle in the collision direction.

In other words, the pole 120 is formed of an aluminum material, and is formed to be bent rather than broken when an external impact is generated, so that the pole 120 can be reused after being restored to its original state.

Accordingly, the lifting / lowering device of the elevator car improves the work efficiency at the high altitude position, and the pole 120 can be reused, thereby reducing the cost.

4 is a cross-sectional view showing the coupling of the coupling pipe to the elevating and lowering control device of the elevating work vehicle according to the present invention.

4, the elevating and lowering control apparatus of the elevator car includes a coupling pipe (not shown) which is fitted to the upper peripheral surface of the pole 120 to be fitted therein and in which a seating space A of the limit switch 150 is formed, 130).

The coupling pipe 130 includes a locking protrusion 131 that defines a boundary between the engagement position of the pole 120 and the seating space A of the limit switch 150.

That is, the locking protrusion 131 protrudes downward from the inner circumferential surface of the coupling pipe 130 toward the center of the coupling pipe 130, so that the limit switch 150 is positioned above the coupling pipe 130 in the seating space A, And the coupling space B of the pole 120 is formed in the lower portion.

When the pole 120 is erected on the fixed plate 110, the fluid can flow into the inside of the coupling pipe 130 due to a weather condition or the like, because the engaging step 131 is formed with the downward inclination as described above. So that the fluid can be prevented from being caught by the catching jaw 131. [0064]

The pole 120 has an outer circumferential surface formed in the shape of a bellows and is engaged with a lower portion of the coupling space B through rotation of the coupling pipe 130.

More specifically, the pole 120 has an aluminum material, and the outer circumferential surface thereof is formed in a wrinkle shape so that it can be bent toward the impact direction when impacted by collision with an obstacle.

Accordingly, the pole 120 is not broken due to an external impact, but can be restored upon bending by bending, so that semi-permanent use can be possible.

Meanwhile, the coupling pipe 130 is formed with a coupling portion 132 therein to correspond to the shape of the bellows of the pole 120.

The engaging portion 132 may be formed to have a predetermined length on the inner circumferential surface of the engaging space B adjacent to the engaging protrusion 131 but may be formed entirely along the inner circumferential surface of the engaging space B.

As a result, the coupling pipe 130 is rotated in one direction while being fitted to the upper portion of the pole 120, so that the upper portion of the pole 120 is engaged with the engaging protrusion 131, As shown in Fig.

FIG. 5 is a sectional view showing the combination of the limit switch for the elevating and lowering control apparatus of the elevated work vehicle according to the present invention.

5, the elevating / lowering control device of the elevator car may include a limit switch 150 (not shown) for controlling the control device 50 so that the elevation height of the work platform 30 is limited when an obstacle is detected ).

To this end, the limit switch 150 includes a sensor module 151, a detector 152, and a power supply line 153.

First, the sensor module 151 is inserted and fixed in the seating space A of the coupling pipe 130.

That is, the sensor module 151 has a predetermined size, and the lower part of the sensor module 151 is engaged with the latching jaw 131 of the coupling tube 130.

In other words, the sensor module 151 is inserted so that the body is fitted into the seating space A, and the lower portion of the sensor module 151 is positioned to abut the upper portion of the latching jaw 131.

Here, the diameter of the seating space A is preferably equal to or smaller than the size of the sensor module 151, so that it can be easily fixed when the sensor module 151 is fitted to the sensor module 151 .

Since the sensor module 151 is formed in a box shape, the diameter of the seating space A is set to be larger than the diameter of the coupling space B to which the circular pole 120 is coupled, The outer side and the inner side are formed with stepped portions.

On the other hand, a sensor 152 to be described later is installed on the sensor module 151.

The sensor 152 is installed on the sensor module 151 with a predetermined length.

At this time, the detector 152 protrudes from the upper part of the coupling pipe 130 to the outside.

That is, the detector 152 is inserted into the seating space A and is inserted into the seating space A, and is formed to have a predetermined length so as to protrude outward from the upper portion of the coupling pipe 130, thereby effectively detecting an obstacle.

When the sensor 152 protruding higher than the height of the coupling pipe 130 contacts the obstacle, the contact signal is transmitted to and controlled by the control device 50 so that the lift height of the work table 30 is effectively limited .

The detector 152 prevents damage due to collision with an obstacle and is formed in a spring-like shape so as to be bent by an elastic force so that it can be restored to its original shape easily when an impact is generated.

Here, the detector 1520 may be formed of a solid elastic rod having a single body, or may be formed of a pipe, a corrugated pipe, a plastic rod, or the like.

At this time, if the detector 152 is an elastic seal such as silicone, urethane, special rubber, elastic synthetic resin, or the like, it is preferably formed of a material resistant to a pressing force and is formed of a material having electrical insulation.

Therefore, even if the obstacle to be contacted is an electrical dangerous object, the sensor 152 can prevent damage due to the leakage current since electricity is not transmitted to the sensor module 151.

Meanwhile, the sensor module 151 is provided with a power supply line 153, which will be described later, for connection with the control device 50.

The power line 153 extends from the sensor module 151 and is connected to the control device 50 and is formed to have a variable length in an internal space of the pole 120.

That is, the power supply line 153 is provided to have a predetermined length to be connected to the control device 50 installed in the work table 30, and the position of the pole 120 and the position of the control device 50 Depending on the position, the length can be varied to facilitate connection.

Therefore, the elevation control device of the elevator car is controlled by the control device 50 so that when the obstacle comes into contact with the sensor 152 through the connection of the control device 50 and the power line 230, It is possible to prevent an accident caused by carelessness of the operator.

As a result, the elevating and lowering control device can not only fix the elevation height of the work table 30 in accordance with the rotation movement of the elevation control unit 100, but also, when the elevation control unit 100 is upright, The lifting and lowering of the work table 30 can be restricted.

FIG. 6 is a cross-sectional view showing an embodiment of a lifting and lowering control apparatus for a high-performance work vehicle according to the present invention.

6, the lift control device of the elevator car is inserted between a pair of fixed plates 110, hinged to the pair of fixed plates 110 by a hinge shaft 111, (Not shown).

Here, the pole 120 includes a first elevating member 121 and a second elevating member 122 so as to be adjustable in length.

First, the first elevating member 121 has a predetermined length and is coupled to the fixing plate 110 of one phase.

Here, the second elevating member 122 is inserted into the first elevating member 121 and is formed such that the insertion position thereof is changed through sliding movement by rotation.

That is, the second elevating member 122 is provided with a diameter smaller than the diameter of the first elevating member 121, and can be slid within the first elevating member 121 so that the micro-length can be adjusted Do.

At this time, the first elevating member 121 and the second elevating member 122 are fastened to the second elevating member 122 by fastening members 200 in the fastening holes 123, So that the slide moving position can be fixed.

In other words, the fastening member 200 is inserted into the fastening hole 120 so that the first elevating member 121 and the second elevating member 122 are inserted and fastened together to effectively fix the slide moving position .

Therefore, since the lifting and lowering device of the elevator car can finely adjust the length of the pole 120 through the sliding movement of the second elevating member 122, the shape of the complex structure and the height difference of the protruding structure The operation at the high altitude position can be facilitated.

According to the present invention, an elevation height of a work platform is fixed in accordance with a phase change of a limit switch, so that an accident that an operator is stuck to an upper portion of a structure on an operation position having a predetermined height can be prevented in advance.

In addition, the present invention has an effect that a worker can easily ascertain whether or not the work platform can be elevated through an installation position of a limit switch hinged on a handrail.

Further, since the electric wire connected to the limit switch is connected to the control device along the inside of the rail, the electric wire can be prevented from being damaged as well as the risk of injury caused by the electric wire can be prevented.

Further, the present invention is not limited to manufacturing and installing a separate device, but it is possible to fix the elevation height by changing the phase of the existing elevation control unit, thereby reducing the manufacturing cost of the elevation control device .

Although the present invention has been described with reference to the embodiment (s) shown in the drawings, it is to be understood that various changes and modifications may be made without departing from the scope of the present invention. It will be understood that all or some of the elements (s) may be optionally constructed in combination. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Bogie 20: Lift arm
30: Workbench 40: Handrail
50: Control device 100: Lift control unit
110: fixed plate 111: hinge shaft
120: pole 121: first elevating member
122: second elevating member 123: fastening hole
130: Coupling tube 131:
132: coupling portion 140: detection sensor
150: Limit switch 151: Sensor module
152: Detector 153: Power line
160: fixing part 200: fastening member
A: seat space B: engagement space

Claims (7)

And a worktable provided at an upper portion of the bogie, the lift arm being folded and elevated and installed on an upper portion of the lift arm, the platform being provided with a railing and a control device, A lifting / lowering control device for a high-performance work car that controls a lifting height of a work platform,
And an elevation control unit coupled to the railing and controlling the control device to limit the elevation of the work platform in accordance with an obstacle detection and a phase change,
The elevation control unit includes:
A pair of fixing plates protruding from the railing;
A pole inserted between the pair of fixing plates and hinged to the pair of fixing plates by a hinge shaft to rotate;
A coupling tube coupled to surround the upper outer circumferential surface of the pole and having a seating space for seating a limit switch therein; And
And a sensing sensor provided in the coupling pipe, connected to the control device, for transmitting a signal corresponding to a phase change to the control device,
Wherein the coupling tube comprises:
And a locking jaw which forms a boundary between the engagement position of the pole and the seating space of the limit switch and is inclined downward toward the inner center,
The pole
A first elevating member coupled to the pair of fixing plates; And
And a second elevation member inserted in the first elevation member and formed to vary an insertion position through slide movement and fixed at an insertion position on the first elevation member through a fastening member Lift / lower control device for high - altitude work vehicle.
delete The method according to claim 1,
The elevation control unit includes:
And a fixing unit coupled to the hinge shaft and configured to fix a rotational position of the pole.
The method according to claim 1,
The limit switch includes:
A sensor module inserted and fixed in the seating space;
A sensor installed at an upper portion of the sensor module and protruding outward from an upper portion of the coupling pipe; And
And a power line extending from the sensor module and connected to the control device, the power line being formed to be variable in length within the pole.
delete The method according to claim 1,
The pole
And is installed so as to be bent when a shock caused by a collision with an obstacle occurs.
The method according to claim 6,
Wherein the coupling tube comprises:
And an engaging portion formed inside the corrugated pipe so as to correspond to a shape of a corrugated pipe of the pole and fixed to the pole through rotation in one direction.

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