KR20180017373A - The pneumatic lifting device for transporting the heavy materials - Google Patents

Abstract

Disclosed is a pneumatic lifting device for transporting heavy materials, capable of preventing minute leakage of air pressure and essentially preventing a failure due to malfunction in an abrupt power shutdown state such as a power failure. The pneumatic lifting device for transporting heavy materials comprises: a base frame; a lifting frame having one axis coupled to the base frame by a hinge and the other axis lifted and operated in an inclined slope form, coupled with an upper board to be able to be horizontally lifted, and including a support for supporting a lifting height when lifted, in an upper end corresponding to the base frame; a bellows cylinder disposed between the base frame and the lifting frame to lift the lifting frame by compressed air supplied from the outside; and a stopper means connected to a driving cylinder moving forward or backward by the compressed air supplied from the outside, and involved in whether the support is supported according to lifting while operating by a predetermined width along rails provided at facing both ends on the base frame.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pneumatic lifting device for transporting heavy materials,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic lifting device for heavy goods transportation, and more particularly, to a pneumatic lifting device for heavy goods transportation, which is capable of preventing minute leakage of air pressure and preventing a failure due to an operation failure in an unexpected power- To a pneumatic lifting device for heavy goods transportation.

Generally, in a work site for moving a heavy object, there is a need for an apparatus that can be conveniently moved without applying a great deal of force. Various types of lifts are widely used for such a tool.

Generally, the lift is usually constructed such that the cross bar of the X type is raised or folded while the elevator bar of the upper part is elevated. In order to move such a support, a transmission device or a hydraulic device is mainly applied.

Lifts can be classified as follows depending on the type of elevator or elevator.

First of all, the types of devices for raising and lowering can be classified into electric type, hydraulic type or pneumatic type, and it can be classified into a vertical type lift which is raised or lowered while maintaining a predetermined horizontal state, And the other one is operated as a hinge type, while the other is operated as a slope operated slump to form a predetermined sloped surface.

Such conventional lifts or slumps are often used frequently when loading or unloading or transporting heavy loads of transport vehicles at once.

When the vehicle is loaded on the transportation vehicle, the operator moves the predetermined transportation object on the lowered lift, and lifts the lift so that it is at the same height as the loading box of the vehicle. So that it can be maintained for a predetermined time.

On the other hand, when lowering the cargo, the elevator of the elevator is adjusted to the same height as that of the car, and then the cargo of the cargo is moved on the lift, and the platform is moved down to the necessary place.

However, in the case of the conventional pneumatic lift, the external supply air pressure of the overall structure of the technical construction generally enables a certain level of operation at about 6 kg / cm 2. On the other hand, In addition, there is a problem in that an operation failure is inevitable due to circumstances such as a possibility of leakage of air due to a fine setting due to a field setting.

In particular, the conventional pneumatic lift can not avoid malfunctions in the event of a sudden accident on the power supply, such as a power failure, and if the malfunction continues repeatedly, the structural problems that cause frequent failures It is holding.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an auxiliary tank for supplying air at a constant pressure, And to provide a pneumatic lifting device for heavy goods transportation.

It is another object of the present invention to provide a pneumatic lifting device for carrying heavy objects, which has a support for supporting a lifting frame during a lifting operation and a speed control for a lifting operation, thereby enhancing operational reliability while improving performance.

According to another aspect of the present invention, there is provided a method of driving a motorcycle, the motorcycle including a base frame, A lifting frame that is coupled to the base frame and includes a support for supporting a lifting height at the time of lifting, and a lifter frame disposed between the base frame and the lifting frame for lifting the lifting frame by compressed air supplied from the outside A bellows cylinder, and a driving cylinder connected to the driving cylinder for advancing or retracting by compressed air supplied from the outside. The bellows cylinder is operated by a predetermined distance along a rail provided at both opposite ends of the base frame, Including stopper means Eojinda.

The base frame may further include an auxiliary tank for receiving compressed air supplied from the outside and supplying predetermined compressed air to the bellows cylinder and the driving cylinder.

The auxiliary tank may include a check valve for preventing backflow of compressed air supplied from the outside.

And at least one pair of lifting and lowering guides may be further provided between the base frame and the lifting frame for stable lifting and lowering operation.

The stopper means may include a plurality of guide rollers disposed on the rail and a linking rod connecting the plurality of guide rollers to one drive cylinder.

The bellows cylinder is provided at both the center of the base frame and the center of the lifting frame. At least one of the pair of bellows cylinders further includes an upward limit switch and a downward limit switch. The forward limit switch and the reverse limit It is also possible to provide a switch.

Further comprising first and second pneumatic controllers between the auxiliary tank and the pair of bellows cylinders and the drive cylinders respectively for controlling the supply amount and speed of the compressed air supplied to the bellows cylinder and the drive cylinder in the auxiliary tank And the like.

The first pneumatic controller includes a first solenoid valve for controlling the intake and withdrawal of compressed air entering the bellows cylinder in the auxiliary tank according to a detection signal of the up and down limit switches when the vehicle ascends and descends, A first pneumatic speed control for controlling a speed of compressed air entering the bellows cylinder, and a pneumatic regulator for equally dividing compressed air supplied to the bellows cylinder from the auxiliary tank so as to maintain a balance during lifting and lowering of the bellows cylinder And the like.

The second pneumatic controller controls the intake and withdrawal of the compressed air entering the drive cylinder in the auxiliary tank according to a detection signal of the forward and backward limit switches when the drive cylinder moves forward and backward in association with the elevation frame A second solenoid valve, and a second pneumatic speed control for regulating the speed of compressed air entering the drive cylinder in the auxiliary tank when moving back and forth.

The present invention applies an auxiliary tank for supplying air at a constant pressure irrespective of the facility conditions of a work site, so that normal operation can be performed even in an unexpected situation such as air leakage and power failure, There is a technical effect that improves.

In addition, the present invention provides a support for supporting a lifting frame during a lifting operation and a speed control for a lifting operation to improve performance while improving operational reliability, as well as to improve the performance of the lifting frame of a pneumatic lifting device It has a technical effect that can be overcome.

In addition, since the supply amount or speed of compressed air supplied from the first and second pneumatic controllers to the bellows cylinder or the driving cylinder in the auxiliary tank can be adjusted, improvement in work stability that can freely adjust the lift performance of the lift There is an effect to plan.

FIG. 1 is a block diagram schematically showing the technical construction of a pneumatic lifting device for carrying heavy objects according to an embodiment of the present invention.
2 is a plan view schematically showing an exploded state of a pneumatic lifting device for carrying heavy objects according to a first embodiment of the present invention.
3 is a side sectional view showing an operating state of a pneumatic lifting device for carrying heavy objects according to the first embodiment of the present invention.
4 is a side cross-sectional view schematically showing an operating state of a pneumatic lifting device for carrying heavy objects according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram illustrating a pneumatic lifting device for carrying heavy objects for illustrating an embodiment of the present invention. Fig.

The pneumatic lifting device for transporting a heavy object according to an embodiment of the present invention is used for transporting or moving test equipment in the same place as an electromagnetic wave shielding room and is used in the form of an inclined slump for lifting the threshold height or a lifting type lift .

1 to 4, the pneumatic lifting device for heavy goods transportation according to the embodiment of the present invention mainly includes a base frame 10, a lift frame 20, a bellows cylinder 30, and a stopper means 40 .

The base frame 10 is composed of a lower end, and the lifting frame 20 is composed of a reinforcing frame and an exterior material capable of withstanding a predetermined load load disposed at an upper end thereof.

The bellows cylinder 30 and the stopper means 40 are mounted between the base frame 10 and the lifting frame 20. The bellows cylinder 30 and the stopper means 40 may be a technical construction for lifting the lifting frame 20 from the base frame 10 to a predetermined shape.

The lifting frame 20 is coupled to the base frame 10 so that one shaft is hingedly coupled to the other shaft as shown in FIG. 4, and the other shaft can be elevated and lowered, have.

In addition, in the case of the lifting frame 20, the upper plate 21 can be raised and lowered in a horizontal state.

The upper end of the lifting frame 20 corresponding to the base frame 10 includes a support 22 supporting the lifting height of the lifting frame 20 during lifting and lowering.

It is also possible to provide at least one pair of elevation guides 70 between the base frame 10 and the elevation frame 20 for stable elevation operation.

As shown in FIG. 3, the elevating guide 70 may be variously constructed such that a predetermined mandrel 72 is inserted and coupled in a slidable manner by a predetermined width in a hollow guide-type guide tube 71 .

The lifting and lowering guide 70 serves to minimize the degree of clearance of the lifting frame 20 relative to the base frame 10 during lifting and lowering and to improve the stability of the lifting and lowering operation.

The elevation guide 70 can also be implemented by applying a predetermined LM guide or the like.

4, the elevating guides 70 are provided on the elevating shaft of the hinge shaft relative to each other. In the case of the horizontal elevating type as shown in FIGS. 2 and 3, the two elevating axes, that is, As shown in FIG.

The bellows cylinder 30 is disposed between the base frame 10 and the lifting frame 20 so as to lift the lifting frame 20 by receiving compressed air supplied from the outside.

The stopper means 40 functions as a kind of an observer for stably maintaining the elevation height of the lifting frame 20 lifted by the bellows cylinder 30.

The stopper means 40 is connected to the drive cylinder 50 which is advanced or retracted by the compressed air supplied from the outside. The stopper means 40 is provided so as to be movable by a predetermined distance along the rails 11 provided at opposite ends of the base frame 10 in conjunction with the forward and backward movement of the drive cylinder 50.

As a result, the stopper means 40 of the present invention is for maintaining the set height when the lifting frame 20 is lifted by the bellows cylinder 30 and is provided so as to be capable of being involved in supporting the support base 22 do.

A predetermined auxiliary tank (60) may be further provided in the base frame (10).

The auxiliary tank 60 receives the compressed air supplied from the outside, and then provides the technical features of supplying the compressed air at the pressure necessary for the operation of the bellows cylinder 30 and the driving cylinder 50. [

It is preferable that the auxiliary tank 60 is provided so as to supply a certain level of compressed air, which is usually about 6 kg / cm 2.

Such an auxiliary tank 60 can relieve the operation trouble due to the circumstances such as the case where the air pressure is varied depending on the work site conditions or the problem of the field setting, that is, the possibility of leakage of the air, It is possible to ensure smooth operation even when the power supply is suddenly shut off as in the case of FIG.

Here, it is preferable that the auxiliary tank (60) includes a predetermined check valve (61). The check valve 61 is provided on the outer connecting hose of the auxiliary tank 60 to prevent the backward flow of the compressed air supplied from the outside.

The stopper means 40 may be provided again with a plurality of guide rollers 41 and a predetermined linkage 42.

The guide rollers 41 of the present invention are arranged on the rails 11 in plural. The guide roller 41 is formed in such a form that the consumption of energy for movement can be minimized by reducing the movement friction as the drive cylinder 50 advances and retreats.

The connecting rod 42 may have a predetermined shape for connecting the plurality of guide rollers 41 and one driving cylinder 50 with each other. The connecting rod 42 can connect and form a predetermined steel beam with a structure like an 'H' shape.

The bellows cylinder 30 may be provided as a pair on both sides of the central portion between the base frame 10 and the lifting frame 20.

At least one of the pair of bellows cylinders 30 is further provided with an up limit switch 31 and a down limit switch 32.

The ascending limit switch 31 and the descending limit switch 32 are a series of devices for automatically controlling the ascending and descending operations of the ascending and descending frame 20. The ascending limit switch 31 controls the ascending position of the ascending and descending frame 20 , And the lowering limit switch 32 is for appropriately controlling the lowering position of the lifting frame 20.

The rising limit switch 31 and the falling limit switch 32 are formed by applying a predetermined proximity sensor switch type on the bellows cylinder 30. [

Meanwhile, the driving cylinder 50 according to the embodiment of the present invention may further include a forward limit switch 51 and a reverse limit switch 52.

The advance limit switch 51 and the reverse limit switch 52 are set to the position of the stopper means 40 by the drive cylinder 50 according to the ascending and descending operations of the lift frame 20, To a position where it abuts or avoids the support table 22.

The forward limit switch 51 and the backward limit switch 52 are provided on the drive cylinder 50 in the same manner as the upward limit switch 31 and the downward limit switch 32 and are provided on the drive cylinder 50 So that the distance between the stopper means 40 can be automatically detected.

The first and second pneumatic controllers 80 and 90 are further provided between the auxiliary tank 60, the pair of bellows cylinders 30, and the driving cylinder 50, respectively.

The first and second pneumatic controllers 80 and 90 adjust the supply amount and the speed of the compressed air supplied from the auxiliary tank 60 to the bellows cylinder 30 or the drive cylinder 50, (20), and is provided in the base frame (10).

The first pneumatic controller 80 is for controlling the supply amount and speed of the compressed air supplied from the auxiliary tank 60 to the bellows cylinder 30 and includes a first solenoid valve 81, (82) and a pneumatic regulator (83).

The first solenoid valve 81 is disposed between the auxiliary tank 60 and the bellows cylinder 30 so as to control the drawing-in and drawing-out of the compressed air entering the bellows cylinder 30 from the auxiliary tank 60.

The first solenoid valve 81 is configured to be linked and controlled according to the detection signal of the rising limit switch 31 or the falling limit switch 32 when the lifting frame 20 is lifted or lowered.

The first pneumatic speed control 82 controls the first solenoid valve 81 and the bellows cylinder 30 so as to adjust the speed of the compressed air entering the bellows cylinder 30 in the auxiliary tank 60 when the lifting frame 20 is moved up and down. ).

The pneumatic regulator 83 is provided in the auxiliary tank 60 so as to maintain the lift balance of the lift frame 20 by the bellows cylinder 30 during the ascent or descent of the bellows cylinder 20 30 for dividing the amount of compressed air supplied to the compressor.

In the case of the pneumatic regulator 83, it is preferable to arrange it between the auxiliary tank 60 and the first solenoid valve 81.

The second pneumatic controller 90 according to the embodiment of the present invention adjusts the supply amount and the speed of the compressed air supplied from the auxiliary tank 60 to the drive cylinder 50. The second solenoid valve 90 91), and a first pneumatic speed control (92).

Here, it is preferable that the advance and retreat of the drive cylinder 50 are controlled in accordance with whether the lift frame 20 is lifted or lowered.

The second solenoid valve 91 is disposed on the connection path between the auxiliary tank 60 and the driving cylinder 50 for controlling the drawing-in and drawing-out of the compressed air entering the driving cylinder 50 from the auxiliary tank 60. do.

Further, the second solenoid valve 91 is configured to be automatically controlled in a predetermined pattern by the detection signals of the forward limit switch 51 or the backward limit switch 52 when the drive cylinder 50 moves back and forth.

At this time, the forward limit switch 51 and the backward limit switch 52 of the drive cylinder 50, and the upward limit switch 31 and the downward limit switch 32 of the bellows cylinder 30, It is preferable to configure such that the control operation of the controller can be linked.

The second pneumatic speed control 92 is for controlling the speed of the compressed air entering the drive cylinder 50 from the auxiliary tank 60 to control the forward and backward speeds of the drive cylinder 50. The second solenoid valve 91) and the drive cylinder (50).

Hereinafter, a control flow according to a lifting operation of the pneumatic lifting device for transporting a heavy object according to a preferred embodiment of the present invention will be described in detail.

First, a lifting operation according to a preferred embodiment of the present invention starts from turning on an UP switch or a DOWN switch provided on an operator's control panel of a certain type.

When the operator turns on the UP switch of the control panel, the first solenoid valve 81 of the first pneumatic controller 80 in the base frame 10 is opened and the pressure in the auxiliary tank 60 supplied from the outside Air is supplied to both the bellows cylinders 30 through the pneumatic regulator 83 and the first pneumatic speed control 82 to inflate the bellows cylinder 30. [

When the bellows cylinder 30 is inflated by compressed air, the lifting frame 20 is lifted up to a certain height from the base frame 10. At this time, when the lifting frame 20 reaches the set height, the lifting frame 20 senses a predetermined signal from the upward limit switch 31 of the bellows cylinder 30.

The second solenoid valve 91 of the second pneumatic controller 90 is opened and the compressed air in the auxiliary tank 60 supplied from the outside is detected by the second pneumatic speed control 92 To advance the position of the guide roller 41 and the linkage 42 of the stopper means 40 to a predetermined state.

At this time, when the position of the guide roller 41 and the linkage 42 of the stopper means 40 is moved to a position where it can support the lower end of the support base 22 of the lift frame 20, the forward limit switch The first solenoid valve 81 of the first pneumatic controller 80 in the base frame 10 stops operating while sensing a predetermined signal from the first solenoid valve 51.

The pneumatic lifting device for transporting heavy objects according to the embodiment of the present invention is configured such that the lifting frame 20 is lifted up from the base frame 10 by a predetermined height, Is held by the stopper means (40).

Subsequently, when the operator turns on the DOWN switch of the control panel, the first solenoid valve 81 of the first pneumatic controller 80 in the base frame 10 is opened and the auxiliary tank 60 ) Is supplied back to both the bellows cylinders 30 through the pneumatic regulator 83 and the first pneumatic speed control 82.

The lifting frame 20 is lifted to some extent by the bellows cylinder 30 so that the supporting table 22 of the lifting frame 20 is slightly lifted from the stopper means 40. [

At the same time, the upward limit switch 31 of the bellows cylinder 30 again senses a predetermined signal. When a predetermined signal is detected again by the upward limit switch 31, the second solenoid of the second pneumatic controller 90 The valve 91 reverses the drive cylinder 50 to restore the position of the guide roller 41 and the linkage 42 of the stopper means 40 to the original position.

At this time, the position of the guide roller 41 and the linkage 42 of the stopper means 40 is moved from the lower end of the support frame 22 of the lift frame 20 to a position where it can be avoided, The operation of the first solenoid valve 81 of the first pneumatic controller 80 in the base frame 10 is stopped while a predetermined signal is detected from the switch 52.

According to the above-described operation, the pneumatic lifting device for carrying heavy objects according to the embodiment of the present invention maintains a lull state before the operation in which the lifting frame 20 is in contact with the base frame 10.

The pneumatic lifting device for carrying heavy objects according to the embodiment of the present invention is provided with a support 22 for supporting the lifting frame 20 at the time of lifting and first and second pneumatic controllers 80 and 90 for linking operation It is possible to improve the performance while improving operational reliability, and to overcome the load limit of the heavy load that can be supported by the pneumatic lifting device.

Particularly, by using a pneumatic cylinder to support the steps of about 130 to 150 mm for smooth transportation of heavy loads, it is possible to reduce the economic burden by reducing the material cost for the work site .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that they belong to the scope of the present invention.

10. Base frame 11. Rail
20. Lift frame 21. Top board
22. Support
30. Bellows cylinder 31. Rising limit switch
32. Down limit switch
40. Stopper means 41. Guide rollers
42. Links
50. Drive cylinder 51. Forward limit switch
52. Reverse limit switch
60. Auxiliary tank 61. Check valve
70. Lifting guide 71. Guide tube
72. Mandrel
80. First pneumatic controller 81. First solenoid valve
82. 1st pneumatic speed control 83. Pneumatic regulator
90. Second pneumatic controller 91. Second solenoid valve
92. 2nd Pneumatic Speed Control

Claims (9)

A base frame;
Wherein one shaft is hingedly coupled to the base frame and the other shaft is elevated and lowered to be operated in a predetermined slope form or the upper plate is coupled to be movable up and down in a horizontal state, A lifting frame including a support for supporting the lifting frame;
A bellows cylinder disposed between the base frame and the lifting frame so as to lift the lifting frame by compressed air supplied from outside; And
Stopper means connected to a driving cylinder which is advanced or retracted by compressed air supplied from the outside and which is operated by a predetermined distance along a rail provided at both opposite ends of the base frame and which is related to the support of the support by elevation;
And a pneumatic lifting device for transporting the heavy object. The method according to claim 1,
Wherein the base frame further includes an auxiliary tank for receiving compressed air supplied from outside and supplying predetermined compressed air to the bellows cylinder and the driving cylinder. The method of claim 2,
Wherein the auxiliary tank includes a check valve for preventing backflow of compressed air supplied from the outside. The method according to claim 1,
Further comprising at least one pair of lifting and lowering guides for stable lifting operation between the base frame and the lifting frame. [2] The apparatus according to claim 1,
A plurality of guide rollers disposed on the rails;
A connecting rod connecting the plurality of guide rollers to one driving cylinder;
The pneumatic lifting device comprising: The method according to claim 1,
Wherein the bellows cylinder is provided on both sides of the center between the base frame and the lifting frame and at least one of the pair of lifting and lowering limit switches is further provided with an up limit switch and a down limit switch, A pneumatic lifting device for carrying heavy objects, further comprising a limit switch. The method of claim 6,
Further comprising first and second pneumatic controllers between the auxiliary tank and the pair of bellows cylinders and the drive cylinders respectively for controlling the supply amount and speed of the compressed air supplied to the bellows cylinder and the drive cylinder in the auxiliary tank Pneumatic lifting device for carrying heavy objects. 8. The air-conditioning system according to claim 7,
A first solenoid valve for controlling the intake and withdrawal of compressed air entering the bellows cylinder from the auxiliary tank in response to a detection signal of the up and down limit switches when the vehicle ascends and descends;
A first pneumatic speed control for controlling the speed of compressed air entering the bellows cylinder in the auxiliary tank at the time of ascending and descending;
A pneumatic regulator for uniformly dividing compressed air supplied from the auxiliary tank to the bellows cylinder so as to maintain a balance during lifting and lowering of the bellows cylinder;
The pneumatic lifting device comprising: 8. The air-conditioning system according to claim 7,
A second solenoid valve for controlling the intake and withdrawal of the compressed air entering the drive cylinder in the auxiliary tank according to a detection signal of the forward and backward limit switches when the drive cylinder moves forward and backward in association with the lift and lower of the lift frame;
A second pneumatic speed control for regulating the speed of the compressed air entering the drive cylinder in the auxiliary tank during forward and backward movement;
And a pneumatic lifting device for transporting the heavy object.

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