KR20230095435A - A lifter for easily loading goods to aerial platform and using power - Google Patents

Abstract

The present invention relates to a lift device capable of stably receiving power from a chassis of an aerial work platform while easily loading cargo on a work table by driving a lift using power.
In the present invention, a lift device for easy loading of cargo and use of power on a work platform is located on one side of a work platform composed of a work table, an extension structure, and a chassis to lift and lower cargo, and is located on one side of the work table. a support that is mounted and extends toward the ground; a loading unit that slides up and down from the support unit and has a flat surface capable of loading cargo thereon; a lifting unit that is connected to the support or loading unit and moves the loading unit up and down with respect to the support unit by being driven by power; and a take-up unit disposed on the chassis and connected through a wire to supply power to the lifting unit, and unwinding and winding according to the lifting of the work table.

Description

Lift device for easy loading of cargo and use of power on the aerial platform {A LIFTER FOR EASILY LOADING GOODS TO AERIAL PLATFORM AND USING POWER}

The present invention relates to a lift device that facilitates the loading of cargo on a work platform and the use of power. It relates to a lift device that can be supplied with power.

An aerial work platform is a device that safely moves a worker to a working position when work is required at a high place. These aerial work platforms can be used not only in industrial sites such as construction, but also wherever work is required at high places, such as logistics, landscaping, and facility management.

The aerial work platform may be largely composed of a work table, an extension structure (jib), and a chassis.

A work platform is a safety handrail platform or cage that can be moved to a required work position with cargo loaded, and work can be performed there.

An extending structure or jib is connected to the chassis to support the work table and enable it to be moved to the required position. It is divided into a rotating type that can rotate on the chassis and a non-rotating type that does not.

In addition, the chassis, as a lower body of the workbench, is provided with wheels that are normally movable.

In order to work using such an aerial work platform, cargo or construction equipment must be loaded on the work table, and the bottom surface of the work table is located on the chassis and extension structure, and usually reaches a height of 1 m or more. Therefore, there is a problem in that it is not easy to load cargo and the like necessary for work on the workbench due to the difference in height from the ground.

In order to solve this problem, a device for attaching a lift device to a work table and lifting a cargo to the floor of the work table through the lift device has been developed. These devices are divided into a method using power (Registration Patent Publication No. 0846150, an aerial work platform equipped with an article lifting device) and a non-powered method (Patent Publication No. 2021-0136510, non-powered lift device).

At this time, the non-powered lift device has the advantage of not requiring a separate power source and power generator, but has the inconvenience of having to raise the loading part of the lift by moving the aerial work platform upward.

In addition, the powered lift device was able to raise the loading part by driving the power generator through power, but when the power supplied to the power generator is connected from the chassis to the wire, the length of the wire must be stretched according to the vertical movement of the aerial work platform. There was an inconvenience, and if the battery was installed on the work table, there was a problem in that the weight of the work table increased due to the inconvenience of charging the battery and a load was added to the lifting and lowering of the work table.

Republic of Korea Patent Registration No. 0846150 (registered on July 8, 2008) Republic of Korea Patent Publication No. 2021-0136510 (2021.11.17. Publication)

The present invention has been made in view of the above problems, and an object of the present invention is to drive a lift using power to easily load cargo on a work table while receiving power stably from the chassis of an aerial work platform. It is an object of the present invention to provide a lift device that is easy to load cargo on a work platform and use power.

According to the characteristics for achieving the above object, the lift device, which is easy to load cargo into the aerial work platform and use power, is located on one side of the aerial work platform composed of a work table, an extension structure, and a chassis to raise and lower the cargo. In the device, the support is mounted on one side of the worktable and extends toward the ground; a loading unit that slides up and down from the support unit and has a flat surface capable of loading cargo thereon; a lifting unit that is connected to the support or loading unit and moves the loading unit up and down with respect to the support unit by being driven by power; and a take-up unit disposed on the chassis and connected through a wire to supply power to the lifting unit, and unwinding and winding according to the lifting of the work table.

And, it is preferable that the lifting part is a winch mounted on the support part and connected to the loading part through a wire to lift the loading part through winding of the wire.

In addition, the winding unit includes a frame on which a motor is mounted, a winding roller rotatably mounted on the frame and rotated in a winding direction by driving the motor, one end wound around the winding roller and connected to a power source, and the other end of the lifting roller. A wire mounted on the part, a sensor for detecting the tension applied to the wire, and a sensor for detecting tension applied to the wire, and when the tension of the wire detected by the sensor is less than the set range, the motor is driven to drive the winding roller in the winding direction and set When the range is exceeded, a controller stops driving the motor so that the winding roller can be freely released by the tension of the wire.

And the frame further includes an extension piece protruding in a direction of extension of the wire so that the wire extending to the elevation part is bent while contacting, and the sensor detects a pressure applied to the extension piece by the wire. It can be mounted on the lower side of the side.

At this time, on both sides of the extension, a pair of support protrusions may be protruded with the detection sensor interposed therebetween in order to prevent the wire from lateral deviation.

According to the lift device for easy loading of cargo and use of power on the aerial work platform according to the present invention, power can be used to drive the lift to easily load cargo on the work table while stably supplying power from the chassis of the aerial work platform. In particular, the wire connected to the work table from the chassis is wound in conjunction with the elevation of the work table, so there is no need to perform a separate work on the wire.

In addition, according to the present invention, as the work table is raised and lowered, the speed of unwinding or winding the wire is controlled through the pressure applied by the wire to the pressure switch, so that the wire does not act as a load on the lifting of the work table, while preventing short circuits of wires and connectors There are effects that can be done.

1 is a view showing a schematic configuration of an aerial work platform including a lift device according to the present invention;
2 is a view showing the configuration of a support part, a loading part and an elevating part in a lift device according to the present invention;
3 is a view showing the configuration of the winding unit in the lift device according to the present invention;
4 is a view showing an operation of raising a cargo or the like with a lift device according to the present invention;
5 is a view showing the operation of the winding unit when the work table is raised;
6 is a view showing the operation of the winding unit when the work table descends.

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

1 is a view showing a schematic configuration of a high-altitude work platform including a lift device according to the present invention, and FIG. 2 is a view showing the configuration of a support part, a loading part, and an elevating part in the lift device according to the present invention, and FIG. 3 is a view showing the configuration of the winding unit in the lift device according to the present invention.

As shown, the lift device 10 according to the present invention is located on one side of a work platform H composed of a work platform W, an extension structure E, and a chassis C to lift and lower cargo. , It is largely composed of a support part 20, a loading part 30, a lifting part 40 and a take-up part 50.

The support part 20 is mounted on one side of the work table (W) and extends toward the ground, and more specifically, the upper end is mounted in a hanging form on one side of the work table (W), and the lower end is vertically disposed from the top desirable. This support part 20 is configured in the form of a vertical square frame 21, and has a length so that its lower part approaches or contacts the ground when the work table W is completely lowered. In addition, a horizontal square frame 22 capable of supporting the loading unit 30 by being spaced apart from the ground may be connected at right angles to a lower end of the vertical square frame 21 .

In addition, it is preferable that the support part 20 has a configuration that can be dismantled from one side of the work table (W) if necessary. For example, the rear surface of the support part 20 is provided with a first coupling piece 23 and a second coupling piece 24 extending to the upper and lower surfaces of the work table W, and the first and/or second coupling pieces 24 are provided. It may be configured to mount the support part 20 in the form of gripping the bottom plate of the work table W by moving the pieces 23 and 24 and disassemble it in reverse.

In addition, a pulley 25 may be mounted on the upper frame 52 of the support part 20 to facilitate movement of the wire 41 of the elevation part 40 across.

The loading part 30 slides up and down along the side frame 52 constituting a square frame in the support part 20 and has a flat surface capable of loading cargo thereon. The loading part 30 is rotated upward with respect to the support part 20, and when there is no object to be loaded, it may be closely attached to the support part 20 so as not to be exposed to the side of the aerial platform H.

In addition, the loading part 30 is provided with a connecting part 31 to which the lifting part 40 is connected in order to be moved up and down by the lifting part 40 to be described below. The connection part 31 can be made of various configurations according to the connection method with the elevation part 40, and in this embodiment, since the fastening hook 42 is installed at the front end of the elevation part 40, the fastening hook 42 ) and a configuration consisting of a ring form that can be bonded is exemplified.

The lifting part 40 is connected to the support part 20 or the loading part 30 and moves the loading part 30 up and down with respect to the support part 20 by being driven by power. The lifting part 40 is installed in a position where it is not obstructed when lifting the cargo loaded on the loading part 30 and moving it to the work table W. For example, the loading part is lifted from the upper end of the support part 20 It can be mounted on the other side of the surface or on the bottom of the workbench.

The configuration of the elevating unit 40 is not particularly limited, but is mounted on the support unit 20 and connected to the loading unit 30 through a wire 41 so as to wind the wire 41 to the loading unit ( 30) is exemplified by a winch that raises.

The winding unit 50 is disposed on the chassis C and is connected through an electric wire 54 so as to supply power to the lifting unit 40, and unwinding and winding are performed according to the elevation of the work table W. am.

When the configuration of the winding unit 50 is described in more detail, the winding unit 50 is rotatably mounted to the frame 52 to which the motor 51 is mounted, and the motor 51 A winding roller 53 rotated in the winding direction by the driving of the winding roller 53, one end of which is wound around the winding roller 53 and connected to the battery B, and the other end of the electric wire 54 mounted on the elevation part 40 , The sensor 55 for detecting the tension applied to the wire 54, and the motor 51 is driven when the tension of the wire 54 detected by the sensor 55 is less than the set range A controller for driving the winding roller 53 in the winding direction and stopping the driving of the motor 51 when the setting range is exceeded so that the winding roller 53 can be freely released by the tension of the wire 54 ( not shown).

In this way, since the lift device 10 also rises when the work table W rises, the length of the electric wire 54 connected to the lift part 40 must also increase, so that the winding roller 53 ), the wire 54 must be unwound, and on the contrary, when the work table W is lowered, the wire 54 is wound with an appropriate tension when the lift device 10 descends in a state in which the wire 54 is unwound. It consists of a configuration to That is, when the work table (W) is raised, the winding roller 53 is configured to be freely unwound so as not to apply a load to the rise of the work table (W), and when the work table (W) is lowered, the motor 51 is driven to roll the winding roller 53 rotates in the winding direction, but is configured so that excessive tension is not applied to the wire 54.

As a preferred embodiment of the winding unit 50, the frame 52 is an extension piece protruding in the direction in which the wire 54 extends so that the wire 54 extending to the elevation unit 40 is bent while contacting the wire 54. 56, and the detection sensor 55 may be mounted on a lower end of the extension piece 56 to sense the pressure applied to the extension piece 56 by the electric wire 54.

On both sides of the extension piece 56, a pair of support protrusions 57 are formed to protrude with the sensor 55 interposed therebetween in order to prevent the wire 54 from lateral deviation.

Here, the detection sensor 55 may be configured in a sensing method that detects the tension applied to the wire 54 or the pressure applied to the surface by the tension, and various configurations capable of implementing this function It can be done.

Next, the operation of the lift device for easy loading of cargo and use of power to the aerial work platform according to the present invention will be described.

Figure 4 is a view showing an operation of raising a cargo, etc. by the lift device according to the present invention, Figure 5 is a view showing the operation of the winding unit when the work table is raised, Figure 6 is a view showing the operation of the winding unit when the work table is lowered A diagram showing the operation of

In order to use the height work platform (H), the chassis (C) is moved to the position to work at height. In addition, cargo or tools are loaded on the work platform (W) of the aerial work platform (H) in order to carry out cargo transportation or construction. At this time, since the work table W is disposed on the chassis C and the extension structure E, it is approximately 1 m or more high, so it is difficult to load cargo or tools by manpower. Therefore, the lift device 10 according to the present invention is located on one side of the aerial work platform H and the lifting unit 40 is operated in a state in which cargo is loaded on the loading platform of the lift device 10, so that the loading unit moves to the support unit 20. It can slide vertically along the . That is, cargo, etc. It can be moved upward to the upper end of the support part 20 .

At this time, the operation of the elevating unit 40 is possible by supplying power such as the battery B disposed on the chassis C, and the supply of such power is provided between the elevating unit 40 and the battery B. It is made by the winding part connecting to the electric wire 54.

When the loading part is located at the upper end of the support part 20, the lifting part 40 stops and maintains its stopped state. At this time, since the upper end of the support part 20 is the same as or slightly higher than the height of the work table W, the upper surface of the loading part reaching the top of the support part 20 is disposed at the same height as or slightly higher than the work table W. Cargoes, etc. loaded on the loading unit can be easily moved to the work table (W).

When a cargo or the like is placed on the work table (W), the extension structure (E) is operated to raise the work table (W) to a raised place. At this time, as the work table W rises, the lift device 10 also rises, so the length of the wire 54 must be increased. To this end, the wire 54 wound around the take-up roller 53 is It is released freely by the tension according to the rise and maintains the proper tension.

If the unwinding of the winding roller 53 is not smooth, the tension applied to the wire 54 increases, which is detected by the sensor 55 as exceeding the setting range, and the control unit drives the motor 51 By doing so, the winding roller 53 can be rotated in the unwinding direction. As a result, the tension falls within the set range and the driving of the motor 51 is stopped.

When the cargo transfer or work on the work table W is finished, the work table W is lowered by folding the extension structure E on the chassis C. At this time, as the wire 54 extending to the rising position of the work table W is stretched as the work table W descends, the tension falls short of the set range. In this case, the detection sensor 55 detects this, and the control unit drives the motor 51 so that the winding roller 53 rotates in the direction of winding the electric wire 54 . As a result, the tension falls within the set range and the driving of the motor 51 is stopped.

This operation may also be performed through the extension piece 56 extending from the frame 52 and the detection sensor 55 mounted on the lower end thereof. That is, when the extension piece 56 is provided, the wire 54 wound around the winding roller 53 is bent around the extension piece 56 and connected to the elevation part 40 . At this time, it is preferable that the wire 54 is in a state in which pressure within a set range is applied to the lower end of the extension piece 56, which can be confirmed by the pressure value sensed by the detection sensor 55.

The control unit drives the motor 51 in forward and reverse directions so that the pressure value falls within the set range so that the winding roller 53 rotates in the winding or unwinding direction, or stops the motor 51 so that the winding roller 53 ) is controlled so that it can be freely released by the tension applied to the wire 54.

At this time, the support protrusion 57 formed on the side of the extension piece 56 limits the lateral movement range of the wire 54 when the wire 54 is wound or unwound on the winding roller 53. As a result, since the wire 54 can continuously contact the detection sensor 55, measurement of the tension (or pressure) and rotation of the winding roller 53 through this when the wire 54 is wound or unwound is possible.

According to the configuration and operation as described above, power is stably supplied from the chassis C of the aerial work platform H while the lift device 10 is lifted and driven by using power to easily load cargo on the work platform W. be able to receive

In addition, by adjusting the speed of unwinding or winding the wire 54 through the pressure applied to the detection sensor 55 by the wire 54 as the work table W moves up and down, It is possible to prevent a short circuit of the wire 54 and the connector while not acting as a load.

As described above, the rights of the present invention are defined by what is described in the claims, not limited to the embodiments described above, and various modifications and adaptations within the scope of rights described in the claims by those skilled in the art in the field of the present invention It is self-evident that you can do

H: Aerial Work Platform W: Work Platform
E: extension structure C: chassis
B: Battery
10: lift device
20: support 21: vertical square frame
21a: side frame 22: horizontal square frame
23: first coupling piece 24: second coupling piece
25: pulley 30: loading part
31: connection part 40: lifting part
41: wire 42: fastening hook
50: winding unit 51: motor
52: frame 53: winding roller
54: wire 55: detection sensor
56: extension piece 57: support protrusion

Claims (5)

In the lifting device (10) located on one side of the aerial work platform (H) composed of a work table (W), an extension structure (E) and a chassis (C) to elevate a cargo,
a support 20 mounted on one side of the work table W and extending toward the ground;
A loading unit 30 that slides up and down on the support unit 20 and has a flat surface capable of loading cargo thereon;
An elevation part 40 connected to the support part 20 or the loading part 30 and moving the loading part 30 up and down with respect to the support part 20 by being driven by power;
A winding unit 50 disposed on the chassis C, connected through an electric wire 54 to supply power to the lifting unit 40, and unwinding and winding according to the lifting of the work table W. A lift device that is easy to load cargo and use power to the aerial work platform, characterized in that.
According to claim 1,
The lifting part 40 is a winch mounted on the support part 20 and connected to the loading part 30 through a wire 41 to lift the loading part 30 through winding of the wire 41. A lift device that is easy to load cargo and use power to the aerial work platform, characterized in that.
According to claim 1,
The winding unit 50 includes a frame 52 to which a motor 51 is mounted, and a winding roller 53 rotatably mounted to the frame 52 and rotated in a winding direction by driving the motor 51. ), and a wire 54, one end of which is wound around the winding roller 53 and connected to a power source, and the other end of which is mounted on the elevation part 40, and a sensor 55 for detecting tension applied to the wire 54 ), and when the tension of the wire 54 detected by the sensor 55 is less than the setting range, the motor 51 is driven to drive the winding roller 53 in the winding direction, and the setting range is exceeded It is easy to load cargo and use power on the aerial work platform, characterized in that it includes a control unit that stops the driving of the motor 51 so that the winding roller 53 can be freely released by the tension of the electric wire 54. one lift device.
According to claim 3,
The frame 52 further includes an extension 56 protruding in the direction of extension of the electric wire 54 so that the electric wire 54 extending to the elevation part 40 is bent while being in contact with it.
The detection sensor 55 is mounted on the lower side of the extension 56 so that the wire 54 detects the pressure applied to the extension 56 Loading cargo and using power to the aerial work platform, characterized in that This easy lift device.
According to claim 4,
On both sides of the extension piece 56, a pair of support protrusions 57 are formed to protrude with the detection sensor 55 in between in order to prevent the wire 54 from lateral departure. Lift device for easy loading of workbench and access to power.

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