KR101752450B1 - gantry crane - Google Patents

Abstract

The present invention relates to a gantry crane, which is capable of easily moving all of the sections where there is no running rail, where the obstacle is located, and where there is no running rail, and to prevent the occurrence of safety accidents and personal injury by preventing the flow of trolley and hoist during movement .
A gantry crane according to the present invention is a gantry crane comprising: a support portion disposed so as to correspond to each other with a gap therebetween; a girder connecting between upper sides of the support portion; a trolley movably mounted on the girder; An auxiliary traveling unit provided at a lower side of the supporting unit and provided with a wheel, a fixed part spaced from a front side and a rear side of the traveling unit and provided with auxiliary wheels, and an auxiliary traveling unit provided on the auxiliary traveling unit, And a pivotal coupling portion.

Description

Gantry crane {gantry crane}

The present invention relates to a gantry crane.

Generally, there are many kinds of crane depending on the moving state of the object. As an example, there may be a tower crane that provides rotational movement to an object, and a horizontal crane that moves linearly.

Among these cranes, the horizontal cranes can be lifted by lifting heavy objects and are designed to move the suspended objects longitudinally and laterally.

The horizontal crane may include a hoist device capable of lifting and lowering an object, a guide frame disposed to cross the hoist device in X and Y directions, and a base structure supporting the guide frames.

In order to handle an object of 3 tons or more by the conventional horizontal crane, handling equipment, electric type equipment and upper monorail have been required.

However, conventionally, there is a considerable difficulty in equipping equipment necessary for a crane due to limitations on the space in which the horizontal crane is installed, a surge in installation cost, and an open space.

In the conventional crane, there is a problem that there is no running rail or the place where the gradient is formed can not be moved, and since the width of the leg for supporting the girder can not be adjusted, there is a problem that the section in which the obstacle is located can not be moved.

In addition, since the conventional crane does not include a structure for fixing the trolley for transporting the hoist, the trolley moves on the girder unexpectedly during the movement of the crane, which causes the hoist to be shaken, There is a problem in that safety accidents and personal injury are caused, for example, when the operator is charged.

Patent Registration No. 10-1270190 (2013.05.27)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a traveling safety device, And it is an object of the present invention to provide a gantry crane capable of preventing personal injury.

A gantry crane according to the present invention is a gantry crane comprising: a support portion disposed so as to correspond to each other with a gap therebetween; a girder connecting between upper sides of the support portion; a trolley movably mounted on the girder; An auxiliary traveling unit provided at a lower side of the supporting unit and provided with wheels, a auxiliary traveling unit spaced apart from the front and rear sides of the traveling unit and having auxiliary wheels, And a pivotal coupling portion.

The support portion includes a main support portion and a sub support portion vertically installed between the girder and the running portion, and the height of the main support portion is adjusted to the height of the conveyed object.

In addition,

A connecting body, which is respectively installed on both sides of the connecting body and is mounted on a first rotating shaft for fixing the wheel to the traveling portion and a second rotating shaft for fixing the auxiliary wheel to the auxiliary traveling portion, As shown in Fig.

And a suspension portion connecting the traveling portion and the auxiliary traveling portion.

Further, the apparatus may further include an interval adjusting unit for adjusting the interval between the supporting units,

Wherein the interval adjusting unit comprises:

A first guiding part disposed on both sides of the girder and engaged with the supporting part, a movement guiding part provided along the longitudinal direction of the upper surface of the girder, and a guide part positioned between the first guiding part and movable along the guiding part A power transmitting portion mounted on the first fixed shaft and transmitting rotational power to the first moving portion, and a second power transmitting portion mounted on the first fixed shaft for transmitting rotational power to the first moving portion, And a control unit for rotating the power transmission unit in a forward or backward direction so that the support unit moves along the longitudinal direction of the girder.

In addition,

A second moving part which is disposed on both sides of the girder and is coupled to the hoist, a second moving part located on both sides of the second coupling part and on both side surfaces of the girder and formed with teeth at the outer periphery, A second fixed shaft fixed on the second coupling portion and movable along the longitudinal direction of the girder, a second movable portion provided on the second fixed portion, the second movable portion being movable along the longitudinal direction of the girder by providing rotational power to the second fixed shaft, A third moving part formed with teeth which engage with teeth of the second moving part on the outer periphery of the driving part, and a third moving part which receives the rotational power from the second moving part and is moved along the moving guide part; The stopper hole is formed on the outer circumference of the third moving part. The outer circumferential part of the third moving part is moved along the stopper hole or the hook part supported by the stopper hole is depressed to restrict the trolley to the girder Can.

The gantry crane according to the present invention has the effect that the auxiliary traveling part is rotatably coupled to the traveling part and the auxiliary traveling part is moved ahead of the traveling part so that the traveling rail can be easily moved without the traveling rail.

In addition, since the distance between the supports can be easily adjusted, the section in which the obstacle is located can be easily moved.

Further, since the trolley is stably fixed to the girder through the action of the stopper hole and the latching part, the flow of the trolley and the hoist during the movement can be prevented, thereby preventing a safety accident and a personal injury.

1 is a front view showing a gantry crane according to the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gantry crane.
3 is a front view showing a process of adjusting the height of a girder applied to a gantry crane according to the present invention.
FIG. 4 is a front view showing a process of adjusting a gap of a support applied to a gantry crane according to the present invention. FIG.
FIG. 5 (a) is a side view showing the combined state of the support portion, the girder, and the gap supporting portion applied to the gantry crane according to the present invention.
FIG. 5 (b) is a side view showing a state in which the girder and the support are separated from each other to adjust the gap of the support applied to the gantry crane according to the present invention.
Fig. 6 (a) is a front view showing a combined state of a trolley and a hoist applied to a gantry crane according to the present invention. Fig.
FIG. 6 (b) is a side cross-sectional view showing a combined state of a trolley and a hoist applied to a gantry crane according to the present invention. FIG.
7 is a side view showing movement of a gantry crane according to the present invention.
8 is a side view showing the operation of the auxiliary moving part when the gantry crane according to the present invention moves in a place where the gantry crane moves.
FIG. 9 is a side view showing a process in which a gantry crane according to the present invention moves in its own weight. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view showing a gantry crane according to the present invention. FIG. 2 is an enlarged perspective view of a supporting part applied to a gantry crane according to the present invention, 4 is a front view showing a process of adjusting a gap of a support part applied to a gantry crane according to the present invention. FIG. 5 (a) is a front view showing a process of adjusting the height of a gantry 5B is a side view showing a state in which the girder and the support are separated from each other in order to adjust the gap of the support applied to the gantry crane according to the present invention. FIG. 6 (a) is a front view showing a combined state of a trolley and a hoist applied to a gantry crane according to the present invention, and FIG. 6 (b) 7 is a side view showing the movement of the gantry crane according to the present invention, and Fig. 8 is a side view showing the movement of the gantry crane according to the present invention when the gantry crane is moved FIG. 9 is a side view showing a process of moving the gantry crane according to the present invention in a self-weight state. FIG.

The gantry crane 1 according to the present invention includes a support portion 10, a girder 20, a trolley 30, a hoist 40, a traveling portion 50, an auxiliary traveling portion 60, .

Hereinafter, the support portion 10, the traveling portion 50, and the auxiliary traveling portion 60 are configured as a pair of pairs, but for the sake of convenience, only one configuration will be described for the same configuration.

The support portion 10 supports the load of the object to be lifted up and down through the girder 20 and the hoist 40 and vertically arranged so as to oppose to each other in the left and right direction, And is coupled between the drive part 50. [

The support portion 10 is vertically and horizontally adjusted so as to match the height of the conveyed object or the use environment.

To this end, the support part 10 includes a main support part 11 and a sub support part 12.

Specifically, the main support portion 11 is vertically provided on the bottom surface of the girder 20, and the sub support portion 12 is vertically provided on the upper surface of the running portion 50, 11 of the main supporting portion 11 in the state of being accommodated inside the main supporting portion 11.

That is, the main support portion 11 is formed as a square pipe or a circular pipe with an open bottom, and the upper portion of the sub support portion 12 is inserted into the lower open portion of the main support portion 11, So that the height of the main supporting portion 11 can be adjusted by guiding the lifting and lowering of the main supporting portion 11.

As the height of the main support portion 11 is adjusted, the height of the girder 20 is also adjusted.

At this time, a fixing pin through-hole 11a is formed through both sides of the main supporting portion 11 on the lower front side and the rear side of the main supporting portion 11, and on both the front and rear sides of the sub supporting portion 12, The height adjustment hole 12a is formed so as to penetrate through the fixing pin hole 11a and the height adjustment hole 12a so as to fix the main supporting portion 11 whose height is adjusted, .

The fixing pin 100 includes a bolt that passes through the fixing pin through hole 11a and the height adjusting hole 12a and a nut that is fastened to the outer circumferential edge of the bolt protruding outside the height adjusting hole 12a .

In addition, a first bracket 111 for coupling with the girder 20 is formed on the upper surface of the main support portion 11, and a first bracket 111 for engagement with the running portion 50 is formed on the bottom surface of the sub- 2 brackets 121 are formed.

The first bracket 111 is mounted on the upper surface of the main support portion 11 and has a horizontal portion 111a on the lower surface of which the lower surface of the girder 20 is seated, And a vertical portion 111b which is bent in a direction perpendicular to the direction perpendicular to the longitudinal direction.

The horizontal portion 111a can be welded and fixed to the upper surface of the main support portion 11 and a plurality of bolt through holes for bolting engagement with the girder 20 are formed in the upper and lower directions.

The vertical portion 111b is formed with a plurality of bolt through holes for bolting engagement with the first coupling portion 91 described later through left and right directions.

The second bracket 121 may be formed in a rectangular plate shape and may be welded to the bottom of the sub support portion 12 and may be seated on the upper surface of the travel portion 50.

A plurality of bolt through-holes for bolting engagement with the running unit 50 are formed on both sides of the second bracket 121 in the upward and downward directions.

The girder 20 is horizontally connected between upper portions of the respective support portions 10 and pulls a conveyed object to be moved in a state spaced apart from the ground by a predetermined distance so that a beam can be applied. As shown in FIG.

Through holes formed on both sides of the lower surface of the girder 20 in a vertical direction on the vertical line to the bolt through holes of the vertical portion 111b are formed in the upper and lower directions so that the girders 20, 1 bracket 111 can be easily engaged or disengaged.

At this time, the distance between the through holes of the girder 20 is adjusted so that the distance between the supports 10 can be precisely controlled by forming the through holes at a close distance.

The girders 20 described above can be made of special steel, steel, or the like in order to firmly support the conveyance of the heavy load and the trolley 30 hoist 40.

Meanwhile, the spacing of the support portion 10 is adjusted through the gap adjusting portion 90.

The gap adjusting part 90 includes a first engaging part 91, a movement guide part 92, a first moving part 93, a first fixing shaft 94, a power transmitting part 95, a control part 96, .

The first engaging portion 91 guides the movement of the first moving portion 93, which will be described later, and is formed into a rectangular plate shape having a predetermined length and thickness.

2 and 5, the first coupling portion 91 is disposed on the front side and the rear side of the girder 20, respectively. The first coupling portion 91 includes a tether 30, 20, respectively.

A through hole located on the horizontal line with the bolt through hole of the vertical part 111b is formed in the lower part of the first engaging part 91 in the left and right direction and is passed through the bolt and nut to the vertical part 111b They can be easily combined or separated.

At this time, the first coupling portion 91 may have a cross-sectional shape as viewed from one side thereof.

That is, both side surfaces of the first engaging part 91 are coupled to the first bracket in a state where they are respectively positioned on the front and rear sides of the girder 20, and the upper surface is positioned on the upper side of the third moving part 93 .

Since the first engaging portion 91 is coupled to the vertical portion 111b and is separated from the girder 20, the girder 20 and the horizontal portion 111a are coupled to each other as shown in FIG. 5 (b) The first engaging portion 91 and the supporting portion 10 are pulled up to the side of the girder 20 (see FIG. 1) by lifting the girder 20 toward the first moving portion 93 through a separate lifting device (not shown) In a direction perpendicular to the longitudinal direction.

The movement guide portion 92 is provided along the longitudinal direction of the upper surface of the girder 20 and guides the movement of the first movement portion 93 and may be formed by a known chain or a rack In the drawing, the movement guide portion 92 is applied as a chain.

That is, the movement guide portion 92 is formed to have a length slightly shorter than the girder 20 and both sides thereof are fixed to the upper surface of the girder 20 through the fixing pin 110, In the present invention.

And an intermediate portion fixed by the fixing pin 110 can be welded and fixed to the girder 20. [

The first moving part 93 moves the supporting part 10 while being moved along the movement guide part 92 and is positioned between the first engaging part 91.

The first moving part 93 is formed by a roller so that it can roll smoothly along the movement guide part 92.

At this time, since the movement guide part 92 is formed of a chain or a rack, the movement guide part 92 has a plurality of stopper holes 92a which are spaced apart from each other at a predetermined interval.

The first moving part 93 has a recess 93a formed at the outer circumference of the central part and a hook 931 formed at the center of the recess 93a.

The hooking portion 931 has the same shape as the teeth provided in the known sprocket and performs the same function.

That is, the recess 93a of the first moving part 93 is configured to surround the movement guide part 92, and the hook part 931 is accommodated in the stopper hole 92a in this state .

When the first moving part 93 moves along the movement guide part 92, the hook part 931 moves sequentially along the stopper hole 92a.

The first fixing shaft 94 is fixed to the first engaging part 91 so that the first moving part 93 can be moved along the movement guide part 92 while fixing the first moving part 93 on the first engaging part 91 The first moving part 93 is horizontally penetrated through the central part of the first moving part 93, and both sides of the first moving part 93 are supported by the first engaging part 91.

The first fixed shaft 94 rotates the first moving part 93 by the operation of the power transmitting part 95 and the control part 96 so that the first moving shaft 93 can be moved along the moving guide part 92, The first engaging portions 91 are moved together in the same direction.

At this time, both sides of the first fixing shaft 94 protrude out of the first engaging part 91, and a power transmission part 95 is connected to one side of the first fixing shaft 94.

The power transmitting portion 95 transmits rotational power to the first moving portion 93 and may be formed by a known sprocket.

The power transmitting portion 95 is mounted on the outer periphery of a first fixing shaft 94 whose central portion protrudes to the outside of the first engaging portion 91 and is rotated together with the first fixing shaft 94.

That is, when the power transmission unit 95 is rotated, the first fixed shaft 94 and the first moving unit 93 are rotated.

The control unit 96 controls the distance between the supports 10 and is formed by a known chain.

The control unit 96 may be formed in an elliptical shape and may be wound around the power transmitting unit 95 to form an endless track and be rotated.

In one example, when the left side of the control unit 96 located on the left side of the hook 44 is continuously pulled down and pulled down in the state of FIG. 4, the control unit 96 controls the power transmission unit 95 to transmit the infinite orbit And the power transmission portion 95 is rotated in the direction corresponding to the rotation direction of the control portion 96 in the course of the rotation. The first moving shaft 93 rotates the first moving part 93 and the first moving part 93 moves along the moving guide part 92 so that the supporting part 10 And is moved away from the hook 44.

When the user grasps the right side of the control unit 96 positioned on the right side of the hook 44 and is continuously pulled downwardly, the supporting unit 10 is also moved in a direction away from the hook 44. As a result, It is possible to make the distance apart.

In this manner, the right side of the control portion 96 positioned on the left side of the hook 44 is continuously pulled downward, and when the left side of the control portion 96 positioned on the right side of the hook 44 is continuously pulled, 10 can be narrowed.

Therefore, when the obstacle 130 is located in the movement route in the process of moving the gantry crane 1 according to the present invention in its own weight, the gap of the support portion 10 can be easily adjusted through the gap adjusting portion 90 The obstacle 130 can be easily passed through.

That is, according to the distance between the obstacles placed on the movement path of the gantry crane, the distance between the supports 10 can be easily widened or narrowed by the interval adjusting part 90.

In addition, since the gantry crane 1 according to the present invention can manually adjust the spacing of the support portions 10, there is no need to provide power elements such as electrical equipment, thereby reducing manufacturing costs.

The trolley 30 is movably mounted on the girder 20 and is adapted to feed the conveyed object fixed to the hoist 40 in the left and right directions of the girder 20. The trolley 30 includes a second coupling portion 31, 2 moving unit 32, a second fixed shaft 33, a moving driving unit 34, a guiding moving unit 36, and a third moving unit 35.

The second engaging portion 31 is formed in the shape of a rectangular plate having a predetermined length and thickness.

As shown in FIG. 6, the second engaging portions 31 are disposed on the front and rear sides of the girder 20, respectively, and a hoist 40 is provided on the lower side thereof.

This allows the trolley 30 to transport the hoist 40 in the left and right directions of the girder 20.

A hole for supporting the second fixing shaft 33 is formed at a central portion of the second coupling portion 31.

The second moving part 32 moves along the girder 20 to move the hoist 40. The second moving part 32 is located between the second engaging part 31 and is divided into two parts, (20), respectively.

At this time, the second moving part 32 is formed by a roller so as to be smoothly moved along the girder 20.

The second moving part 32 is provided with a through hole at a central portion thereof and the second moving shaft 33 is installed in the through hole so that the second moving part 32 is supported on the girder 20 .

That is, the second moving part 32 is coupled through the second fixing shaft 33 in a state where the second moving part 32 faces the girder 20, and has a structure capable of rolling along the girder 20 .

A plurality of teeth 321 for transmitting rotational power to a third moving part 35, which will be described later, are formed at an outer circumference of the second moving part 32 at intervals.

The second fixed shaft 33 allows the second moving part 32 to be moved along the girder 20 while fixing the second moving part 32 on the girder 20, The holes of the engaging portion 31 and the through holes of the second moving portion 32 are horizontally penetrated and both sides thereof are supported by the holes of the second engaging portion 31.

Any one of the second fixed shafts 33 receives the rotational power from the movement driving unit 34 and rotates the second moving unit 32.

Since the second fixing shaft 33 passes through the hole of the second engaging portion 31, the second engaging portion 31 is moved together with the second moving portion 32.

At this time, both sides of the second fixed shaft 33 are protruded out of the hole of the second engaging part 31, and a movement driving part 34 is connected to one side of the second fixing shaft 33.

The movement driving unit 34 transmits rotational power to the second moving unit 32 and is formed by a known AC motor or a DC motor, and the motor shaft is rotated in the forward direction or the reverse direction.

The motor shaft of the movement driving unit 34 may be connected to the second fixed shaft 33 or may be connected to the second fixed shaft 33 through a coupler (not shown).

The motor shaft of the movement driving unit 34 rotates the second fixed shaft 33 in the forward or reverse direction and the second moving unit 32 is rotated in the same direction as the second fixed shaft 33, The entire trolley 30 is moved in the left and right directions of the girder 20.

The guide moving part 36 is disposed between the second engaging part 31 so that the trolley 30 can be moved along the girder 20 in a balanced state while the second moving part 32 And is in contact with the front side and the rear side of the girder 20, respectively.

At this time, the guide moving part 36 is spaced apart from the second moving part 32 by a predetermined distance and is formed by a roller so as to be smoothly rolling along the girder 20 by the third fixing shaft 37 .

A through hole is formed in a central portion of the guide moving part 36 and a third fixing shaft 37 is provided in the through hole so that the third moving part 35 is positioned on the girder 20.

The third fixing shaft 37 passes through the holes formed in the second engaging part 31 and the through holes of the third moving part 35 in the horizontal direction and the both sides are inserted into the holes of the second engaging part 31 .

That is, the guide moving part 36 is integrally coupled through the third fixed shaft 37 in a state of facing the girder 20, and the girder 20 together with the second moving part 32 So that the trolley 30 can be moved in a balanced state.

The third moving part 35 moves along the movement guide part 92 and is fixed between the second engaging part 31 through the fourth fixed shaft 38. [

The third moving part 35 is formed by a roller so that it can roll smoothly along the movement guide part 92.

A tooth 352 engaging with the tooth 321 of the second moving part 32 is formed on the outer circumference of the third moving part 35.

6 (b), when the second moving part 32 positioned on the right side of the girder 20 is rotated by the moving driving part 34, the third moving part 35 is rotated, The second moving part 32 located on the left side of the first moving part 20 is rotated.

When the second moving part 32 is rotated, rotational power is transmitted to the third moving part 35, and the third moving part 35 can be moved along the moving guide part 92 have.

The third moving part 35 has a recess 35a at the outer periphery of the center part and a hook 351 at the center of the recess 35a.

The hooking portion 351 has the same shape as that of the teeth provided in the known sprocket and performs the same function.

That is, the recessed groove 35a of the third shifting portion 35 surrounds the movement guide portion 92, and the hook portion 351 is received in the stopper hole 92a in this state .

When the third moving part 35 is moved along the movement guide part 92, the hook part 351 moves sequentially along the stopper hole 92a.

At this time, when the hooking part 351 is received in the stopper hole 92a, the third moving part 35 is constrained to the movement guide part 92. [

Accordingly, even if the gantry crane 1 according to the present invention travels on a ground surface having an unpacked road or a slope, the third moving portion 35 is firmly fixed to the movement guide portion 92, A phenomenon that the trolley 30 slides on the girder 20 does not occur, thereby preventing the hoist 40 from being shaken.

This can prevent a safety accident such as a breakage of the trolley 30 or the hoist 40 due to collision with another structure, a price of a worker, or personal injury.

The hoist 40 lifts the conveyed object and includes a known drum 41, a wire 42, a motor 43, and a hook 44.

The drum 41 is positioned between the second engaging portions 31 and is fixed through the rotating shaft 411.

That is, the rotary shaft 411 is sequentially passed through the second engaging part 31 and the drum 41, and the drum 41 is rotatable about the rotary shaft 411 .

The wire 42 is wound around the outer periphery of the drum 41 and a part of the wire 42 is stretched to the lower side of the drum 41. The lower side of the wire 42 is connected to the hook 44 through the coupling device 441.

The wire 42 is wound or unwound on the drum 41 rotated in the forward direction or the reverse direction to raise and lower the hook 44.

The motor 43 is located outside the second engaging part 31 and is fixed to the second engaging part 31 through a bracket (not shown).

The motor 43 may be an AC motor or a DC motor, and the motor shaft is rotated in a forward or reverse direction.

The motor shaft of the motor 43 is connected to the rotation shaft 411 through a coupler and rotates the drum 41 in a forward or reverse direction so that the wire 42 is wound on the drum 41, .

The hook 44 may include a coupling device 441 coupled to the wire 42 and may be lifted or lowered by a wire 42 wound or unwound from the drum 41.

At this time, since the coupling method of the coupling body and the wire 42 is a generally used method, a detailed description thereof will be omitted.

The hook 44 is hooked with a bundled wire or cord and transports the hook 44 with a predetermined distance from the ground.

The hook 44 is adjusted by the trolley 30 in the left and right positions in the girder 20 according to the width of the conveyed object to pull the conveyed object.

That is, through the operation of the trolley 30 and the hoist 40, the conveyed object can be accurately conveyed to a desired position.

The hoist 40 described above can be applied more than one to stably support the conveyed object.

The driving unit 50 is formed in a rectangular box shape having an opened bottom and an inner space and two wheels 51 are disposed inside the driving unit 50. A first rotary shaft 511 is mounted to each of the wheels 51 .

That is, the wheel 51 is rotatably installed in the traveling unit 50 through the first rotation shaft 511.

At this time, the wheels 51 may be installed in two or more so that the traveling unit 50 can be smoothly moved.

A first sprocket (not shown) is mounted on one of the first rotating shafts 511 of the wheel 51 and a sprocket (not shown) mounted on the motor shaft of the motor M is engaged with the first sprocket .

A second sprocket (not shown) is attached to each of the first rotating shafts 511, and the second sprocket is connected to the other sprocket through a single chain (C).

Thus, the two wheels 51 are rotated by the operation of the motor M so that the gantry crane 1 can travel forward or backward.

A through hole, which is positioned on a line perpendicular to the bolt through hole of the second bracket 121, is formed on the upper surface of the running portion 50 on which the second bracket 121 is seated, The moving part and the second bracket 121 can be easily engaged or separated through the nut and the nut.

At this time, the driving part (50) and the supporting part (10) may be provided with a nail (120) so that the supporting part (10) can resist a horizontal load or a vertical load.

The auxiliary driving unit 60 guides the running of the driving unit 50. The auxiliary driving unit 60 is formed in a rectangular box shape having a bottom open and an empty space formed therein, 611, respectively.

A third sprocket (not shown) is mounted on the second rotary shaft 611, and a fourth sprocket (not shown) is mounted on the first rotary shaft 511.

The third sprocket and the fourth sprocket are connected through a single chain (C ').

Accordingly, when the wheel 51 is rotated by the driving of the motor, the auxiliary wheel 61 is also rotated.

The auxiliary traveling portion 60 is rotatably coupled to the traveling portion 50 through the rotation coupling portion 70.

The pivoting engagement portion 70 includes a connection body 71 and an inner portion 72 during rotation.

The connection body 71 is formed to have a predetermined length and thickness and is disposed between the first rotation axis 511 and the second rotation axis 611 and has a first rotation axis 511 and a second rotation axis 621, .

The inner part 72 is integrally formed on both sides of the connection body 71 during the rotation and is formed into a ring shape.

The inner body 72 is integrally formed on one side of the connecting body 71 and is mounted on the outer circumferential edge of the first rotating shaft 511 and is integrally formed on the other side of the connecting body 71, (72) is mounted on the outer periphery of the second rotation shaft (611), and the auxiliary travel portion (60) can be rotated in the upward and downward directions.

The auxiliary traveling portion 60 is spaced apart from the front portion and the rear portion of the traveling portion 50 and is operated ahead of the traveling portion 50. Accordingly, the auxiliary traveling portion 60 can be easily operated even in a place where there is no running rail, can do.

In one example, as shown in FIG. 8, when the gantry crane 1 travels a place having a gradient in the course of movement, the auxiliary traveling portion 60 located on the front side is moved through the pivoting coupling portion 70 So that the inclined surface can be easily raised or lowered. In the course of the process, the driving portion 50 is guided by the auxiliary driving portion 60, and can easily pass through the inclined surface.

In addition, the traveling unit 50 and the auxiliary traveling unit 60 are connected to each other through the suspension unit 80.

The suspension portion 80 may be formed by a known coil spring. One side of the suspension portion 80 is fixed to the traveling portion 50 while being horizontally disposed between the traveling portion 50 and the auxiliary traveling portion 60, Is fixed to the auxiliary driving portion (60).

That is, when the auxiliary drive unit 60 is rotated in the course of passing through the inclined surface, the suspension 80 flexibly supports the shock.

When the auxiliary driving unit 60 and the driving unit pass the inclined surface and then are positioned on a flat surface, the suspended auxiliary driving unit 60 is quickly returned to the original position, And can be made to be horizontal with the driving unit 50.

9, when the gantry crane 1 according to the present invention is moved in a self-weight state, the suspension 80 is moved in a state in which the auxiliary travel portion 60 maintains a predetermined inclination angle, 50 to be moved.

In addition, when the traveling unit 50 is spaced apart from the ground by a predetermined distance and the auxiliary traveling unit 60 is moved in contact with the ground, the auxiliary traveling unit 60 rotates the inclined surface or the uneven surface upward and downward It can easily pass through.

The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope of the present invention are possible by those skilled in the art.

1: Gantry crane 10: Support
10: main supporting portion 11a: fixing pin through hole
111: first bracket 111a: horizontal part
111b: vertical portion 12:
12a: height adjustment hole 121: second bracket
20: girder 30: trolley
31: second engaging part 32: second moving part
321,352: tooth 33: second fixed shaft
34: movement drive part 35: third movement part
35a, 93a: Depressing recesses 351, 931:
36: guide diaphragm 37: third fixed axis
38: fourth fixed shaft 40: hoist
41: drum 411:
42: wire 43: motor
44: Hook 441: Coupling device
50: running part 51: wheel
511: first rotating shaft 60: auxiliary traveling portion
61: auxiliary wheel 611: second rotating shaft
70: rotation coupling unit 71: connection body
72: During Inside 80: Suspension
90: gap adjusting portion 91:
92: movement guide portion 92a: stopper hole
93: first moving part 94: first fixed shaft
95: Power transmission unit 96: Control unit
100, 110: Fixing pin 120:

Claims (6)

A support portion disposed so as to be spaced apart from each other,
A girder connecting the upper side of the support portion,
A trolley movably mounted on the girder,
A hoist that is coupled to the trolley and is capable of lifting and lowering the conveyed object,
A traveling part provided below the supporting part and provided with a plurality of wheels connected to each other through a chain,
An auxiliary traveling unit spaced apart from the front and rear sides of the traveling unit and provided with auxiliary wheels connected to the wheels through a chain,
A motor for providing power to the wheels to rotate the wheels and the auxiliary wheels,
A pivotal coupling portion for pivotably coupling the auxiliary running portion to the traveling portion,
And an interval adjusting unit for adjusting an interval between the supporting units,
The pivotal coupling portion
The connecting body,
A first rotation shaft formed on both sides of the connection main body for fixing the wheels to the drive unit and a second rotation shaft for fixing the auxiliary wheels to the auxiliary drive unit respectively and guiding the rotation of the auxiliary drive unit And a rotation guide portion,
Wherein the interval adjusting unit comprises:
A first coupling portion disposed on both sides of the girder and coupled to the support portion,
A movement guide provided along the longitudinal direction of the upper surface of the girder,
A first moving part located between the first engaging parts and movable along the moving guide part,
A first fixing shaft for rotatably fixing the first moving part on the first engaging part,
A power transmitting portion mounted on the first fixed shaft and transmitting rotational power to the first moving portion,
And a control unit for rotating the power transmission unit in a forward or reverse direction so that the support unit moves along the longitudinal direction of the girder,
The trolley,
A second engaging portion disposed on both sides of the girder and coupled to the hoist,
A second moving part which is located between the second engaging parts and on both side surfaces of the girder and has teeth at the outer periphery,
A second fixed shaft fixed to the second moving portion and movable along the longitudinal direction of the girder,
A movement driving unit for providing a rotational power to any one of the second fixed shafts to move the second moving unit along the longitudinal direction of the girder,
And a third moving part formed with a tooth engaging with the teeth of the second moving part on an outer circumference and being moved along the moving guide part by receiving rotational power from the second moving part,
Wherein the movement guide portion is formed with a stopper hole spaced apart from each other,
Wherein the third moving part is formed with a hook that is moved along the stopper hole or supported by the stopper hole, so that the trolley can be constrained to the girder.
The method according to claim 1,
Wherein the support portion comprises a main support portion vertically installed between the girder and the traveling portion and a sub support portion and the main support portion is vertically and downwardly adjusted in accordance with the height of the object to be conveyed.
delete The method according to claim 1,
And a suspension portion connecting the traveling portion and the auxiliary traveling portion.

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