KR101775500B1 - Safety apparatus for auto tong using balance device - Google Patents

Abstract

The present invention relates to a safety apparatus for automatic tongs having a balance device and, more specifically, relates to a safety apparatus for automatic tongs having a balance device, wherein in automatic tongs having a balance device to maintain balance of the tongs gripping a high temperature weight when being operated, when a load greater than a predetermined setting is applied to a wire of the automatic tongs, the load can be easily identified in the outside or a remote place. Moreover, while the load is identified, rotating operation of a motor rotating a wire drum is controlled to prevent a negligent accident in advance.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a safety device for an automobile having a balance device,

The present invention relates to a balance device which is provided with a device for maintaining a balance in operation and which is capable of quickly identifying and checking a load on a wire when the load is applied to the wire, And more particularly,

TONGS is used mainly in forging workshops where high-temperature heavy materials are used. In order to hold large heavy objects, the size of the pail is large, and the pail of a large pail shows a large stroke.

The hoist includes a hook hook installed to be hooked on the hook of the crane, an arm and a clamp installed to wind the heavy object, and a hoist installed to operate the arm and the clamp to wind the hoist, And a drum for rotating the drum, a motor, a speed reducer, and a pulley for guiding the wire rope, and an automatic control device is provided to prevent overload from acting on the wire rope of the winch.

The winch installed in the autoclave is used to lower the arms and tongs and to unwind the wire rope that is wound on the drum. When the arm and tongs are lowered, the weight is wound up, and when the wire rope is wound on the drum, As you ascend, release the weight you were winding up.

However, such a conventional autoclave is formed by a pair of left and right pairs when a heavy object is wound (picked up), so that the motion of the working tongs can be different from each other without keeping the balance, and therefore, As shown in FIG.

In the case where the heavy object can not be stably gripped (wound), the heavy object is eccentrically pushed to one side, and the heavy object rotates or falls due to the sagging phenomenon, It causes safety accidents.

In the forging workshop, the moving thing that is wound around the barrel is a high-temperature heavyweight, and safety accidents caused by this cause a large-scale accident.

In addition, when the wire rope of the hoisting machine is wound on the drum, if the wire rope is overloaded due to the abnormal operation, the hoisting machine is damaged and a safety accident is caused by the heavy material.

In order to prevent such an accident, an automatic control device for detecting the load of the wire rope and controlling the win- dow motor when an excessive load acts on the wire rope is installed.

However, the conventional automatic control device uses a load cell, which is a load sensor, to sense the load of the wire rope, which has the advantage of being able to accurately sense the load, but has a weak point in heat, There is a disadvantage in that malfunction occurs in the autoclave used in the same high temperature workplace.

Korean Registered Patent No. 10-0711808 (Registered on April 19, 2007)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an efficient balance apparatus for maintaining a balance of a tongue during operation of a tongue for picking up a heavy object, And when a load (tension) is applied to the wire of the folding and lowering operation that spreads and folds the tongs when the work is progressed, it can be quickly confirmed through the position of the flag at the outside and at a remote place, And a safety device for automatically controlling the driving of the motor for rotating the wire drum in real time when the wire harness is applied to the wire drum, thereby improving the efficiency of the work and preventing the risk in advance .

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above-mentioned problems, the present invention provides an apparatus for connecting a crane hook 11 to an arm 20, 21 and grippers 30, 31 for gripping a heavy object W in a high- A safety device for an automobile which is connected in the form of a link is provided between the crane hook 11 and the arms 20 and 21 so as to operate the arms 20 and 21 and the clamps 30 and 31, A winder 40 installed to catch the winder 40; A balance device (50) installed on the clamps (30, 31) to maintain both sides balance during operation of the clamps (30, 31); A wire 47 is installed inside the win- dow 40 so as to be movable up and down and is wound around a wire drum 46 of the win- dow 40 so that a wire 47 for moving the clamps 30, And when a load is applied to the wire 47 during the feeding operation by gripping the weight W with the grippers 30 and 31, the load sensing signal is displayed outside the winch 40, A safety device (60) for identifying the detection signal; And a control unit.

As described above, the present invention has the effect of maintaining the balance of the operating force by providing the balance device.

In addition, the present invention has an effect that a safety device is further provided in an autoclave having a balance device, so that when a load is applied to the wire, it can be easily distinguished from the outside and from a distance.

In addition, the present invention has an effect of preventing danger and accident in advance by automatically controlling the driving of the motor for operating the wire drum as well as external identification when a load is applied to the wire.

1 is a front view of a safety device for an autoclave according to the present invention, showing a state before the heavy object is gripped by the autoclave.
Fig. 2 is a front view showing a state after the heavy pipe is gripped by the autoclave in the safety device of the autoclave according to the present invention. Fig.
3 is a front view of an embodiment showing an operation when a load is applied to a wire in the safety device of the present invention.
4 is a front view of an embodiment showing an operation in the case where a load is not applied to a wire in the safety device of the present invention.
FIG. 5 and FIG. 6 are views of an embodiment showing a structure of a balance device according to the present invention and a coupling structure with a peripheral structure. FIG.
7 is a plan view of an embodiment of the inside of a hoist according to the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used in this specification and the appended claims for the purpose of description and are not intended to indicate or imply their relative importance or purpose.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

According to one embodiment of the present invention,

A safety device for an autotrain connected to a crane hook (11), wherein arms (20, 21) for gripping a heavy object (W) at a high temperature work place and tongs (30, 31) A winch 40 installed between the crane hook 11 and the arms 20 and 21 for operating the arms 20 and 21 and the tongs 30 and 31 so as to catch the heavy object W; A balance device (50) installed on the clamps (30, 31) to maintain both sides balance during operation of the clamps (30, 31); A wire 47 is installed inside the win- dow 40 so as to be movable up and down and is wound around a wire drum 46 of the win- dow 40 so that a wire 47 for moving the clamps 30, And when a load is applied to the wire 47 during the feeding operation by gripping the weight W with the grippers 30 and 31, the load sensing signal is displayed outside the winch 40, A safety device (60) for identifying the detection signal; And a control unit.

In addition, the safety device (60) includes a moving shaft (61) which is installed in the pedestal (42) inside the winch (40) so as to be movable up and down; An elastic member 63 installed on the upper end side moving shaft 61 of the pedestal 42 to be compressed when the moving shaft 61 is lowered by a load applied to the wire 47; A first pulley 67 installed on the lower end movement shaft 61 of the pedestal 42 and connected to the wire 47; A connecting rod 68 extending from the connecting portion of the moving shaft 61 and the first pulley 67 toward the outside of the winch 40 in a link structure; When the moving shaft 61 is lowered due to a load applied to the wire 47 due to the connection of the connecting rod 68 to the outside of the winch 40, A flag portion (69) which is changed to a load sensing position to be formed; And a control unit.

In addition, the safety device 60 includes a touch part 70 for sensing whether the moving shaft 61 is lowered or not. An automatic control unit 74 for automatically controlling the driving of the motor 43 for rotating the wire drum 46 in the winch 40 by the signal of the touch unit 70; Is further provided.

The touch unit 70 includes a contact member 71 protruding from the upper side of the moving shaft 61 and moving together with the moving shaft 61; A pin 72 (ex: a limit switch or the like) fixedly installed adjacent to the contact member 71 and capable of pivoting upward or downward is protruded toward the contact member 71 so that the movable shaft 61 descends, The driving of the motor 43 is controlled so that the wire drum 46 is not rotated when the pin 71 comes into contact with the pin 72 or when the pin 72 is bent to the lower end by the contact body 71, To the automatic control unit (74); And a control unit.

The driving control of the motor 43 for rotating the wire drum 46 in the win- dow 40 can be controlled by Bluetooth.

In addition, the balance device 50 includes a balance table 51 formed with a long hole 52 in the center and a mounting hole 53, 54 formed on both sides of the balance hole 52; A balance hole 52 formed in the balance pedestal 51 and a hole 34 formed in the clamps 30 and 31 are continuously sandwiched between the balance holes 52 and the balance hole 52, A balance pin 55 for maintaining balance between both sides of the clamps 30 and 31 while being moved downward; .

Also. The winch 40 is installed in a pedestal 42 inside the win- dow 40 and includes a motor 43 for generating power; A brake 44 connected to the motor 43; A speed reducer 45 connected to the motor 43 to reduce the rotation speed; A wire drum 46 connected to the speed reducer 45 and rotated; A wire (47) wound around the wire drum (46) and installed to move the clamps (30, 31); Second and third pulleys (49a, 49b) provided on the frame so as to guide the wire (47) to the clamps (30, 31); .

Hereinafter, a safety device for an autoclave having a balance device according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. FIG.

The safety device for an autoclave having a balance device according to the present invention includes a winch 40, a balance device 50, and a safety device 60. [

The basic structure of the autoclave 100 according to the present invention will now be described.

The autolyte 100 is installed in the hook 11 of the crane and is used for moving the heavy weight W at a high temperature.

A large-sized autolyte 100 used in a forging worksite is provided with a hook hanger 10 formed to be hooked on a crane hook 11 and an arm 20 or 21 with a pin so as to be rotatable with the hook hanger 10 And the arms 20 and 21 are formed in a link shape so as to be rotatable with pins.

The operation and structure of this basic automobile 100 are well known in the art and will not be described in further detail.

The hoist 40 is installed between the hook hanger 10 and the arms 20 and 21 in the above-described autotheater 100 so that the clamps 30 and 31 can be opened and tightened.

The winch 40 includes a motor 43 for generating power in the casing 41, a speed reducer 45 for reducing the speed of rotation of the motor 43 and a speed reducer 45 connected to the speed reducer 45, A wire 47 wound around the wire drum 46 and capable of moving the clamps 30 and 31 and a plurality of pulleys provided to guide the wire 47, 2, and 3 pulleys 67, 49a, and 49b).

The motor 43, the speed reducer 45 and the wire drum 46 are installed on a pedestal 42 formed inside the win- dow 40 and wound around the wire drum 46 to move the tongs 30, A plurality of pulleys provided to guide the wire 47 installed so as to be installed on the pedestal 42 so that the first pulley 67 among the plurality of pulleys is installed in the safety device 60 at the lower end of the pedestal 42 And the second and third pulleys 49a and 49b are installed in the balance table 11 of the balance device 50 to be described later in which the clamps 30 and 31 are provided.

The hoist 40 installed as described above unwinds or unwinds the wire 47 from the wire drum 46 to lower or raise the arms 20 and 21 and the clamps 30 and 31 formed in a link shape to clamp the clamps 30, 31 to open or close the weight W so that it can be picked up or dropped. This action makes it possible for the operator to conveniently grasp and release the heavy object W to be wound.

The tongues 30 and 31 are formed to have a predetermined width so as to more stably pick up the weight W to be collected, and the width may vary depending on the size of the barrel and the weight W to be handled. The movement of the grippers 30 and 31 provided in the autoclave 100 shows a large stroke and when the balance of the grippers 30 and 31 is not maintained by a large stroke, Occurs. In order to prevent such a phenomenon, the balance device 50 is installed so that the balance between the forceps 30 and the forceps 31 is maintained.

The balance device 50 is for keeping balance between the tongue 30 and the tongue 31, as described above.

The balance device 50 includes a balance hole 52 formed in a shape of a long hole toward the top and bottom in the middle portion thereof, a balance table 51 having mounting holes 53 and 54 formed on both sides thereof, And a balance pin 55 formed in the hole 34 formed in the clamps 30 and 31 and operated.

The balance unit 51 is formed in a U shape smaller than the width of the clamps 30 and 31 and is installed inside the plurality of clamps 30 and 31. The clamps 51 are provided on both sides of the balance leg 51, The pins 35 are installed in the holes 32 and 33 formed in the clamps 30 and 31 by using the holes 53 and 54 so as to be rotatable.

The holes 34 and 35 formed in the tongues 30 and 31 on which the balance pins 55 are installed are formed as ellipses of long holes toward the left and right directions to form a clearance with the balance pins 55, , 31) can move smoothly.

The clamps 30 and 31 which are fastened to the arms 20 and 21 by the pins 22 are rotated about the pin 22 and descend. When the clamps 30 and 31 are rotated and lowered, The end portion where the pin 22 is installed and the other end which holds the weight W are broken down due to rotation about the pin 35.

The hole 34 in which the balance pin 55 is provided moves upward and the balance pin 55 provided in the hole 34 is connected to the elongated balance hole 52 The balance is maintained such that the two clamps 30 and 31 can move in the same direction.

The safety device 60 is installed in the hoist 40 described above and is installed on the pedestal 42 in the hoist 40 so as to be movable up and down.

This safety device 60 is wound around a wire drum 46 of the winch 40 so that a wire 47 for moving the clamps 30 and 31 is connected and installed, (Or confirmation) when a load equal to or greater than the weight is applied, the load sensing signal is displayed outside the win- dow 40 so that the load sensing signal can be identified at the outside and at a distance.

The safety device 60 for this purpose includes a moving shaft 61, a first pulley 67, an elastic member 63, a connecting rod 68, and a flag portion 69.

The moving shaft 61 is installed in a pedestal 42 in which a motor 43, a speed reducer 45 and a wire drum 46 are installed in the winch 40. The pedestal 42 is passed through So as to be movable up and down. A spring housing 62 is fixed to the outer periphery of the moving shaft 61 protruding from the top of the pedestal 42.

An elastic member 63 is wound around the outer peripheral edge of the upper side of the moving shaft 61 so that one end of the elastic member 63 is inserted into the upper portion of the spring housing 62 at a predetermined depth, So that the finishing nut 64 is fastened to the upper portion of the tensioned elastic member 63 in the initial state.

The connecting rod 65 is extended upward toward the upper portion of the finishing nut 64 located at the uppermost end of the moving shaft 61. The case 66 covers the outside of the spring housing 62 So that all of the above-described components are housed in the case 66 and only the connecting rod 65 is protruded to the upper portion of the case 66. In this case,

The first pulley 67 is installed on the moving shaft 61 protruding from the lower end of the pedestal 42 so that the wire 47 wound and unwound by the hoist 40 is wound around the second and third pulleys 49a and 49b, And is wound around the first pulley 67 to be connected thereto.

The connecting rod 68 is extended in a linking manner in a direction parallel to the paper surface (toward the outside of the winch 40) at a connecting portion between the moving shaft 61 and the first pulley 67.

The flag portion 69 is provided at the end of the connecting rod 68 and is located outside the winch 40. The flag portion 69 is connected to the initial position When a load is applied to the wire 47 and the moving shaft 61 is lowered, the load sensing position is shifted to a load sensing position that is heard upward and is horizontal with the ground.

That is, the operation of the safety device 60 constructed as described above will be described below.

The elastic member 63 of the safety device 60 maintains the original state of the tensioned state and the wire 47 is kept in the initial state when the load 47 is not subjected to a load equal to or greater than the predetermined weight, The first pulley 67 is positioned adjacent to the bottom of the pedestal 42 while the flag 69 is lowered and the flag is lowered It has an initial state of form.

Thereafter, the arm 20, 21 and the clamps 30, 31 are folded to the maximum at the top without carrying out the transfer of the high-temperature heavy object W, The wire 47 pushes down the first pulley 67 and the moving shaft 61 to which the first pulley 67 is engaged is also lowered by a predetermined length, The maximum compression position of the movable shaft 61 is set to the maximum value of the closing position of the finishing nut 62 on the upper side of the elastic member 63 64 are in contact with the upper surface of the spring housing 62)

With the descent of the moving shaft 61, the connecting rod 68 is deformed at the original initial position, and the lowered flap portion 69 is lifted up to be positioned in a horizontal state with the ground, The worker can easily confirm that the wire 69 is lifted up to the upper side and the worker can easily confirm that the load is applied to the wire 47 so that a work instruction such as a job interruption and a motor 43), and changing the operation direction so that the wire 47 is no longer loosened.

Of course, it will be appreciated that an operator can directly control the motor 43 or the like by wireless communication such as Bluetooth or the like by confirming the signal of the flags 69. [

The safety device 60 is further provided with a touch unit 70 and an automatic control unit 74 so as to detect the load of the wire 47 through the flag unit 69, It is possible to automatically control the operation of the motor 43 to be released.

That is, the touch portion 70 is formed on the safety device 60 to detect whether the movable shaft 61 is lowered. When the detection device 70 senses the movement, A signal is transmitted to the control unit 74 to automatically control the drive of the motor 43 that rotates the wire drum 46 in the winch 40 from the automatic control unit 74 to stop the wire 47 from further loosening , The wire 47 is wound in the opposite direction).

The touch portion 70 includes a contact body 71 and a contact body 73.

The contact member 71 protrudes from the upper portion of the moving shaft 61 and is moved together with the moving shaft 61 so that the touch member 70 is moved to the upper end of the moving shaft 61 (The upper end of the connecting rod 65 positioned at the upper end of the moving shaft 61) is formed in a '+' (cruciform) shape. At the same time when the moving shaft 61 is lowered, the touch portion 70 also descends .

The contact main body 73 is fixed to the cover of the safety device 60 so as to be adjacent to the contact agent so that the pin 72 rotatable up and down is moved toward the contact body 71, The contact member 71 is brought into contact with the pin 72 while the moving shaft 61 is lowered or the pin 72 is bent to the lower end by the contact member 71 . In this case, the motor 43 is driven to send an automatic control signal to the automatic control unit 74 so that the wire drum 46 is not rotated.

In other words, before the heavy object W is transported and before the heavy object W is mounted, the autoclave 100 of the present invention, which is hooked to the crane, is connected to the arms 20, Since the wire 47 is pulled to support the arms 20 and 21 and the clamps 30 and 31 in this case, the moving shaft 61 descends, (69) is positioned at a horizontal position with respect to the ground.

Thereafter, the wire 47 is loosened to transfer the heavy object W, the arms 20 and 21 and the clamps 30 and 31 are stretched and then the weight is gripped by the clamps 30 and 31, The arms 20 and 21 and the clamps 30 and 31 are unfolded to the bottom while gripping the weight W while the wires 47 are loosened. The tension applied to the wire 47 is released. Thus, the flag portion 69 is positioned in the form of staggered at the lower end, and the unwinding of the wire 47 is stopped so that the wire 47 is no longer loosened while the heavy object W is mounted on the clamps 30 and 31.

However, when the tension (load) which can not be applied to the wire 47 at the time of transferring the heavy object W is applied to the wire 47 (the arm 20, 21 and the clamps 30, 31 The operation of the safety device 60 described above causes the flags 69 to be struck to the bottom of the flags 69 due to the lowering action of the moving shafts 61, So that it can be confirmed in real time from the outside, and it can be immediately confirmed that the load is applied to the wire 47

In the drawings not described above, '44' represents a brake, and '48' represents another limit switch.

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. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: Hook Hook 11: Hook
20, 21: arms 30, 31; tongs
32, 33, 34: hole 22, 35: pin
40: winch 41: casing
42: pedestal 43: motor
44: Brake 45: Reducer
46: wire drum 47: wire
48: Limit switch 49a: Second pulley
49b: third pulley 50: balance device
51: balance zone 52: balance hole
53, 54: mounting hole 55: balance pin
60: Safety device 61: Moving axis
62: spring housing 63: elastic member
64: Finishing nut 65: Connecting rod
66: Case 67: First pulley
68: Link 69: Flags
70: touch part 71: contact body
72: pin 73: contact body
74: Automatic control unit 100:
W: the object to be wound

Claims (5)

A safety device for an autotrain connected to a crane hook (11), in which an arm (20, 21) for gripping a heavy object (W) at a high temperature work place and a clamp (30, 31)
A winch 40 installed between the crane hook 11 and the arms 20 and 21 for operating the arms 20 and 21 and the tongs 30 and 31 so as to catch the heavy object W;
A balance device (50) installed on the clamps (30, 31) to maintain both sides balance during operation of the clamps (30, 31);
A wire 47 is installed inside the win- dow 40 so as to be movable up and down and is wound around a wire drum 46 of the win- dow 40 so that a wire 47 for moving the clamps 30, And when a load is applied to the wire 47 during the feeding operation by gripping the weight W with the grippers 30 and 31, the load sensing signal is displayed outside the winch 40, And a safety device (60) for identifying the detection signal,
The safety device 60 includes a moving shaft 61 that is vertically movably installed on a pedestal 42 inside the winch 40 and a moving shaft 61 that is installed on the moving shaft 61 on the upper side of the pedestal 42, A resilient member 63 to be compressed when the movable shaft 61 is lowered by a load applied to the wire 47 and a wire 47 provided on the movable shaft 61 at the lower end of the pedestal 42, A connecting rod 68 extending from the connecting portion of the moving shaft 61 and the first pulley 67 toward the outside of the winch 40 in a link structure, When the moving shaft 61 is lowered due to a load applied to the wire 47 due to the connection of the connecting rod 68 to the outside of the winch 40, And a flag portion (69) which is changed to a load sensing position,
The safety device 60 includes a touch part 70 for sensing whether the moving shaft 61 is lowered or not and a wire drum 46 for rotating the wire drum 46 in the winch 40 by a signal from the touch part 70 And an automatic control unit (74) for automatically controlling the driving of the motor (43) for driving the motor (43).
The method according to claim 1,
The balance device (50)
A balance table 51 in which a long hole 52 is formed at the center in the up and down direction and mounting holes 53 and 54 are formed on both sides;
A balance hole 52 formed in the balance pedestal 51 and a hole 34 formed in the clamps 30 and 31 are continuously sandwiched between the balance holes 52 and the balance hole 52, A balance pin 55 for maintaining balance between both sides of the clamps 30 and 31 while being moved downward;
And a control unit for controlling the safety device.
The method according to claim 1,
The winch 40 is
A motor 43 installed in a pedestal 42 inside the win- dow 40 for generating power;
A brake 44 connected to the motor 43;
A speed reducer 45 connected to the motor 43 to reduce the rotation speed;
A wire drum 46 connected to the speed reducer 45 and rotated;
A wire (47) wound around the wire drum (46) and installed to move the clamps (30, 31);
Second and third pulleys (49a, 49b) provided on the frame so as to guide the wire (47) to the clamps (30, 31);
And a control unit for controlling the operation of the control unit.
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