KR101083796B1 - Heavy tongs apparatus - Google Patents

Abstract

PURPOSE: Tongs for a heavy object are provided to ensure reduced time for disassembly or replacement and improved safety against damage. CONSTITUTION: Tongs for a heavy object comprise a tong part, a support body(20), and a fixing part(30). The tong part comprises tong members and a link member for guiding the movement of the tong members. The support body comprises a wire rope drum and a drive motor. The fixing part, on which a double sided hook hangs, comprises a double sided bar(31) and a bent support(32) connecting the double sided bar and the top of the support body.

Description

Heavy tongs apparatus

The present invention relates to a heavy weight tong device, and more particularly, to a heavy weight tong device that is easy to install, and improved impact relaxation.

In general, industrial tongs (tongs) is used to pick up and transport various weights by opening or closing the tongs device is connected to the ceiling crane. The industrial tongs device is connected to the hook-shaped hook of the ceiling crane moving along the running rail, is moved integrally with the ceiling crane, and the inside is provided with a wire rope drum operated by a driving source. In addition, the lower portion of the wire rope drum is cross-connected to each other is provided with a clamping device for receiving the heavy material inside, the clamping device is picked up or released by lifting the heavy wire by winding the wire rope wound on the wire rope drum.

When the wire rope is released from the wire rope drum, the lower parts of the industrial tongs contact each other so as to pick up the heavy material contained therein, and the picking device is locked by the locking means to stop the loosening of the wire rope and pick up the heavy material. As the ceiling crane moves, the heavy material moves to a predetermined place.

Then, when the heavy material is transported to reach the destination point, the wire rope is wound around the lower part of the tongs device and gradually moved away from each other, so that the tongs device releases the heavy material and is placed on the ground.

However, the conventional industrial tongs device has the following problems.

In the case of an industrial tong device connected to a hook of a ceiling crane by one connection part, the industrial tong device vibrates from side to side due to a sudden weight change when releasing tens of tons of weight, and thus the connection part is moved from the crane hook. There was a risk of accidents by falling off and falling down.

In order to solve the above problems, two connection parts were formed in the industrial tongs and coupled to the crane hook.

1 is a cross-sectional view of a conventional industrial tongs device according to one embodiment.

As shown in FIG. 1, the crane hook 4 protrudes to both sides and is formed with two ring portions convex downward, and two connecting portions 3 hinged to the upper side of the driving part 2 are connected to the ring portion.

Here, the fixing of the crane hook due to vibration was reinforced to some extent compared to the industrial tong device provided with one hinged connection, but when the vibration is greater or pushed upward, the hinged connection could not be prevented from coming off.

In addition, when the load of the weight of several tens of tons stored inside the tongs of the industrial tongs device is suddenly eliminated the weight added to the tongs, the shock is transmitted to the industrial tongs device in response to the weight of the load, sudden shock transmission In some cases, the industrial forceps may cause damage.

In addition, when the load is suddenly terminated, the impact generated on the tongs is transmitted to the ceiling crane provided for the movement of the industrial tongs device, which may cause secondary damage such as damage and breakage of the ceiling cranes. .

The present invention is to solve the above problems, the present invention is to provide a heavy weight tong device easy to install and improved impact mitigation as a problem.

In order to solve the above problems, the present invention is a heavyweight tong device selectively coupled to the twin-hook hook of the crane, the hinge to enable the opening and closing operation to cross-place and pick up the heavy goods to the lower side A tongs unit having a connected tongs member and a link member hinged to an upper portion of the tongs member so as to intersect with each other and interlocked with the tongs member to guide rotation; A wire rope drum hinged to an upper portion of the link member, the wire rope drum being connected to perform the opening and closing operations of the tongs, and selectively winding and winding, and a drive motor driving the wire rope drum. Support body provided with; And a hook having a passage space greater than or equal to the width of the twin hook, and a rotating margin for rotating the twin hook is formed at the lower portion thereof so that the twin hook can be hooked by falling and rotating after passing through the passing space. Provide a heavy weight tong device including the government.

Here, the hook portion is a pair of hook bar which is arranged spaced apart from each other with a space passing through the width of the hook hook, and each of the pair of hook bar and the upper portion of the support body, but the rotation margin is formed inside the lower portion It is preferable to include a bending support that is formed to be bent.

In addition, the rotation margin has a width corresponding to the length of the twin hook, it is preferable that the space more than the rotation radius of the inserted twin hook.

Furthermore, the support body is divided into an upper support and a lower support connected to the clamping portion and connected to the hook portion, the buffer between the upper support and the lower support in accordance with the ballistic deformation in the vertical direction between the lower support It is preferable that a load buffer having an inherent spring member is further provided.

The inside of the spring member is preferably provided with a guide cylinder connected to any one of the upper support and the lower support, and a guide rod provided on the other side thereof so that vertical movement is guided along the inside of the guide cylinder.

Through the above solution, the heavy weight tong device of the present invention provides the following effects.

First, when dismantling and replacing the heavyweight tong device for the user's purpose, the double hook hook of the crane is inserted into the hook fixed portion provided with the twin-bar bar is rotated and raised to couple to the twin-bar bar dismantlement of heavy weight tong device And replacement work is easy, replacement work time can be significantly shortened.

 Second, by supporting a plurality of hook bars of the hook fixing portion, it is possible to distribute the load biased to the double hook bar and increase the strength, to prevent the twin hook bar from bending or breaking to some extent, It is possible to improve the safety against breakage of the weight clamp device.

Third, due to the structure in which the plurality of the bent support is formed on the outside of the hook fixing portion, even if the twin hook hook is separated from the twin hook bar to prevent the hook from being separated to the outside of the hook fixing portion to fall of the weight clamp device Prevent accidents caused by

Fourth, by forming a load buffer with a spring member between the upper support connected to the hook portion and the lower support connected to the tongs, to alleviate the impact that can be picked up and canceled, heavy weight tongs device Can prevent the malfunction.

Fifth, since the impact is not transmitted to the crane coupled to the top of the heavyweight tong device provided with a load buffer unit can prevent the secondary failure of the crane due to the failure of the heavyweight tong device.

1 is a cross-sectional view of a conventional industrial forceps device.
Figure 2 is a cross-sectional view of the weight clamp device according to an embodiment of the present invention.
Figure 3 is a side view of the weight tong device according to an embodiment of the present invention.
Figure 4 is a perspective view of the main part of the weight clamp device according to an embodiment of the present invention.
Figure 5a to 5c is a state diagram showing the connection relationship between the hook fixed portion of the heavy lifting forceps of the present invention and the twin hook hook of the crane.
Figure 6 is a cross-sectional view of the weight tong device according to another preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a weight clamp device according to a preferred embodiment of the present invention.

2 is a cross-sectional view of a heavy weight nipper device according to a preferred embodiment of the present invention, Figure 3 is a side view of the heavy weight nipper device according to a preferred embodiment of the present invention.

As shown in Figure 2 to 3, the heavy weight tong device according to the present invention comprises a tong portion 10, the support body 20, and the hook fixing portion (30).

Here, the tong portion 10 preferably comprises a tong member 11 for picking up a heavy object and a link member 12 for guiding the rotation of the tong member. In detail, the tong members 11 are provided in pairs and are disposed to cross each other, and the hinge members 14 are hinged to each other so that the tong members 11 intersected with each other are rotatable. In addition, the inner wall surface 13 which is rounded in a semicircle shape to one side of the hinge shaft 14 of the tong member 11 is provided, and the inner wall surface 13 provided with the round claw is based on the hinge shaft 14. As you get closer or further away, you can pick up and release heavy items. At this time, the tong member 11 picks up the lower weight by its own weight.

Here, the connecting plate 15 may be further included in the central portion where the tong member 11 is hinged. The connecting plate 15 accommodates the hinge shaft 14 formed by hinge-connecting the tong member 11, and the longitudinal guide hole 16 vertically long to guide the hinge shaft 14 to move up and down. ) Is formed.

In detail, when the hinge shaft 14 coupled to the guide hole 16 descends to the lowermost end of the guide hole 16, the inner wall surface of the tong member 11 hinged to the hinge shaft 14 may be 13 is opened to be spaced apart from each other, and when the hinge shaft 14 moves to the upper end of the guide hole 16, the tong member 11 is rotated inward to close the inner wall surface (13).

On the other hand, the link member 12 is provided in a pair, one side end of the link member 12 is hinged to the upper portion of the tong member 11, the other end opposite the hinge to the support body 20 It is preferred that they are connected and provided in a cross arrangement with each other.

Here, the link member 12 is integrally interlocked as the tong member 11 rotates. That is, when the hinge shaft 14 provided at the center of the tong member 11 moves to the upper portion of the guide hole 16 provided to the connecting plate 15, the inner wall of the tong member 11 (13) away from each other, the upper end of the tongs member 11 provided on the hinge shaft 14 is also far away, the link is hinged to the upper end of the tongs member 11 away The lower part of the member 12 is also preferably opened.

Similarly, when the hinge shaft 14 provided at the center of the tong member 11 moves to the lower side of the guide hole 16 provided to the connecting plate 15, the inner wall of the tong member 11 13 is closer to each other, the upper end of the tongs member 11 provided on the hinge shaft 14 is also close, the link is connected to the upper end of the tongs member 11 closer It is preferable that the lower part of the member 12 also approaches.

On the other hand, the support body 20 is provided with a hinge connected to the upper portion of the link member 12, the drive to drive the wire rope drum 22 and the wire rope drum 22 is wound wire rope 21 Preferably, the motor 23 is provided therein. Here, the drive motor 23 may be formed of a general hoisting motor having a brake.

In detail, the wire rope 21 wound on the wire rope drum 22 has a pulley 17 provided in the tong member 11 or the connecting plate 15 positioned below the support body 20. It is desirable to move up and down selectively.

In other words, the heavyweight tong device picks up the heavy material while being folded or folded to open both inner surfaces of the tong member 10 hingedly connected to each other by their own weight. At this time, the connecting plate 15 hinged to the center of the tong member 10 is subjected to a tension force by the wire rope 21 wound on the pulley 17.

On the other hand, when the tong member 10 is struck down while picking up the heavy object, the hinge shaft 42 inserted into the guide hole 16 of the connecting plate 15 is raised to the It is caught by the end is prevented the fall of the forceps member 40.

In addition, the wire rope 21 wound on the pulley 17 is subjected to a tensile force from the wire rope drum 22 in which the wire rope 21 is wound. In this case, the wire rope drum 22 is axially connected to the drive motor 23, and selectively receives the rotational force to tension the wire rope 21.

Thus, the connecting plate 15 is subjected to a tensile force by the tension of the wire rope 21, the clamping member 11 hinged to the connecting plate 15 is also provided with a braking force to prevent the pickup of heavy weight do.

Next, the hook fixing portion 30 is preferably made of a twin hook bar 31 and the bent support (32). In detail, the hook portion (30) is provided on the upper side of the support body 20, the upper portion of the hook portion 30 is a pair of hook bar 31 of the cylindrical shape is formed, the twin hook The twin hook 41 of the crane 40 is selectively coupled to the bar 31.

Here, the twin hook 41 of the crane 40 has an end portion has a ring portion protruding to both sides, the protruding ring portion is provided to extend in the transverse direction in the vertical axis, the extended end is formed to be rounded upwards This is preferred. Here, the end of the twin hook 41 is preferably bent to correspond to the outer circumference of the twin hook bar (31) accommodated in the twin hook (41).

Figure 4 is a perspective view of the main part of the weight clip device according to an embodiment of the present invention.

As shown in FIG. 4, the twin hook bar 31 of the hook fixing part 30 has a passage space greater than or equal to the width of the twin hook hook 41 so that the twin hook hook 41 can pass in the horizontal direction. Are spaced apart from one another. It is preferable that the plurality of bending supports 32 connecting the upper pairs of the respective pairs of bars 31 and the support body 20 are longitudinally coupled to the pairs of bars 31.

In detail, an accommodating groove for accommodating the twin bar 31 is formed at one side of the bent support 32, and the other side opposite to the support main body 22 is coupled. Here, the twin bar 31 is coupled to the inside of the receiving groove of the bent support 32, the bent support 32 is formed so as not to be separated from the twin bar 31. This is preferred.

Therefore, the plurality of bending supports 32 support the twin bar 31, thereby distributing the load biased to the twin bar 31, so that the twin bar 34 is not bent or broken. Since the strength is increased, it is possible to prevent an accident due to the fall of the heavy weight clamp device.

In addition, the bent support 32 is bent so that the rotation margin 33 is provided on the lower inner side. In detail, when the twin hook 41 is rotated by a predetermined angle, one end of the twin hook hook 41 protruding round both sides can rotate without interfering with the bending support 32 Preferably, the end is bent downward.

 On the other hand, the hook hook hook 41 is connected to the hook fixing part 30 provided at the top of the heavy weight clamp device can be described as follows.

 5a to 5c is a state diagram showing a connection relationship between the hook fixing portion of the heavy weight tong device of the present invention and the twin hook hook of the crane.

As shown in Figure 5a to 5c, the crane 40 is located at the top, the twin hook hook 41 is provided at the lower end thereof is provided, the heavy weight tongs are provided below the crane 40 do.

Here, the inner side of the hook fixing portion 30 is provided with the rotation margin portion 33 into which the twin hook 41 is inserted. The rotatable margin 33 corresponds to the length of both rounded protrusions of the twin hook 41, has a width greater than that, and is provided with a space greater than the rotation radius of the inserted twin hook 41. desirable.

In detail, the twin hook 41 is provided on the hook fixing portion 30, and is positioned to be parallel to the twin hook bar 31 of the hook fixing portion 30. The twin hook 41 provided in parallel descends downwards, passes between the pair of hook bar 31 is spaced apart from the upper portion of the hook fixing portion 30 to form a passage space, It is inserted into the rotation margin 33 provided on the inside of the hook fixing portion (30).

In addition, the twin hook bar 41 and the twin hook hook 41 inserted in the horizontal direction are rotated at an angle so as to intersect the twin hook bars 31 in the vertical direction. At this time, the both ends protruded roundly of the twin-hook hook 41 is positioned below the respective twin-hook bar 31. And, by moving the twin hook hook 41 provided on the lower side of the twin hook bar 31 upward to support the twin hook bar 31, the protruding receiving portion of the twin hook hook 41, It is preferable to combine in a round wrap form.

As such, when the twin hook 41 of the crane 40 is coupled to the twin hook bar 31 of the hook fixing part 30, the crane 40 places the heavy weight tong device where the heavy weight is located. Move to. Thus, the place where the heavy object is located is reached, and the crane 40 is lowered so that the heavy object clamp device picks up the heavy object.

Here, when the heavyweight tongs need to be dismantled and replaced from the crane 40 by the user's need, the twin hook 41 of the crane 40 is provided at the top of the heavyweight tongs. Double hook bar 31 is inserted into the hook fixing portion 30 is provided with a combination of rotation and ascension can significantly shorten the dismantling and replacement of the weight clamp device.

In addition, the pair of hooks 41 is accommodated in the interior of the hook fixing portion 30, due to the structure in which the plurality of the bent support 32 is formed outside thereof, the pair by vibration due to external impact Even when the pair of hook hooks 41 are disengaged from the hook bar 31, the hook bar 31 can be prevented from being separated out of the hook fixing part 30, thereby preventing an accident due to the fall of the weight clamp device. .

Figure 6 is a cross-sectional view of the weight tong device according to another preferred embodiment of the present invention.

As shown in FIG. 6, the weight clamp device may further include a load buffer 150.

Here, the support body 120 is divided into an upper support 160 connected to the hook fixing part 130 and a lower support 170 connected to the tongs 110, the upper support ( Between the 160 and the lower support 170, the load buffer 150 is further provided with a plurality of spring members 151 to perform a buffering action in the vertical direction due to the weight of the heavy weight in accordance with the impact deformation Can be.

In addition, the upper support 160 and the lower support 170 connected to the load buffer 150 extends in a direction corresponding to each other to form an outer surface of the load buffer 150, multi-stage upper Preferably, an upper extension wall formed by extending the support 160 and a lower extension wall formed by extending the lower support 170 are provided.

Here, any one of the upper extension wall and the lower extension wall is provided in a form to surround a portion of the other extension wall, the height deformation of the load buffer 150 is in response to the change in the length of the spring member 151 It is possible.

In detail, when the heavy object is picked up by the heavy weight tong device provided with the load buffer 150, the spring member 151 stretches elastically in the vertical direction so that the lifting of the heavy weight tong device is made smoothly and the heavy object is picked up. can do. At this time, the upper extension wall and the lower extension wall forming the outer surface of the load buffer 150 is preferably separated from each other to correspond to the extended length of the spring member 151.

In addition, when the heavy object to which the heavy object is picked up is moved to a predetermined place and then the heavy object is released again, the heavy object accommodated in the tong member 111 is separated from the tong member 111 to the release site. And, since the spring member 151 is elastically contracted, the heavy weight clamp device is gently released while making a predetermined vibration upwards. At this time, the upper extension wall and the lower extension wall forming the outer surface of the load buffer 150 is preferably accommodated to correspond to the contracted length of the spring member 151.

Thus, by the load buffer unit 150 to reduce the impact that the heavyweight tong device can be received at the time of pick-up and release of the heavyweight can be prevented to some extent the failure of the heavyweight tong device due to external impact. In addition, a secondary failure of the crane 40 may be prevented by not transmitting a shock to the crane 40 connected to the upper side of the heavy weight tong device.

On the other hand, the inner side of the spring member 151 of the load buffer 150 includes a guide cylinder 152 and a guide rod 153.

Here, the guide cylinder 152 is one side end is fixedly connected to any one of the upper support 160 and the lower support 170, the spring member 151 to the outer surface of the guide cylinder 152 It is provided in a wrapping form. In detail, the guide cylinder 152 has a size less than the circumference of the spring member 151, it is preferable that the lubricant is applied to the outer surface so that the spring member 151 can be smoothly deformed in the vertical direction.

On the other hand, the guide rod 153 is provided in the guide cylinder 152, the upper support 160 to which the guide cylinder 152 is connected to guide the vertical movement along the guide cylinder 152 or the It is preferable that the lower support 170 is fixedly connected to any one of the other sides.

In detail, when the heavy object is picked up by the heavy weight clamping device, the spring member 151 embedded in the load buffer 150 is increased in a vertical direction by a predetermined length. At this time, the guide cylinder 152 provided on the inner side of the spring member 151 and the guide rod 153 accommodated inside thereof have the guide rod 153 so as to correspond to the extended length of the spring member 151. It is preferable that a predetermined length protrudes to the outside of the guide cylinder 152 and supports and guides the spring member 151 so as to extend only in the vertical direction.

Similarly, when the heavy weight tongs picked up by the meandering water releases the heavy material, it is preferable that the spring member 151 stretched by a predetermined length in the vertical direction to elastically shrink back to its original length. At this time, the guide cylinder 152 provided inside the spring member 151 and the guide rod 153 accommodated inside the guide rod 153 to correspond to the length of the spring member 151 contracted. Is inserted into the guide cylinder 152, it is preferable to support and guide the spring member 151 to be contracted in the vertical direction.

Thus, even if an impact is applied to the side of the heavy weight clamp device, the spring member 151 provided in the load buffer 150 is supported in the vertical direction, so that the spring member 151 is deformed in the horizontal direction. It can be prevented, and even when shock and vibration is generated from the outside while the heavyweight tong device is moved to a predetermined place, the spring member 151 can be induced to generate a ballistic deformation only in the vertical direction.

As described above, the present invention is not limited to the above-described embodiments, but may be modified and implemented by those skilled in the art without departing from the scope of the claims of the present invention. Such modifications are within the scope of the present invention.

1: the tongs unit 2: driving unit
3: connection part 4: crane hook
10, 110: tongs section 11, 111: tongs member
12: link member 13: heavy load receiving portion
14: hinge axis 15: connecting plate
16: guide hole 20, 120: support body
21: wire rope 22: wire rope drum
23: drive motor 30, 130: hook fixing portion
31: twin bar 32: bending support
33: rotatable 40: crane
41: twin hook 150: load buffer
151: spring member 152; Guide cylinder
153: guide rod 160: upper support
170: lower support

Claims (5)

In the heavy weight tongs to selectively pick up the heavy material is coupled to the twin hook of the crane,
A tong member hinged to open and close operations to be intersected with each other and to pick up a heavy object to the lower part, and a link member hinged to an upper portion of the tong member and arranged to cross each other so as to interlock with the tong member to guide rotation Tongs provided;
A wire rope drum hinged to an upper portion of the link member, the wire rope drum being connected to perform the opening and closing operations of the tongs, and selectively winding and winding, and a drive motor driving the wire rope drum. Support body provided with; And
Rotating margin for the rotation of the twin hook hook is formed in the lower portion having a pass space greater than the width of the hook hook hanger fixed portion is provided so that the hook hook is caught by rotating and rising after passing through the pass space Including but not limited to,
The hook portion is a pair of hook bar is arranged spaced apart from each other with a passage space greater than the width of the hook hook, so that each of the pair of hook bar and the upper portion of the support body is formed so that the rotation margin is formed in the lower inner Weight clamp device, characterized in that made by including a bent support is formed bending. delete The method of claim 1,
The rotation margin portion has a width corresponding to the length of the twin hook, heavy weight clip device, characterized in that provided with a space more than the rotation radius of the inserted hook hook. The method of claim 1,
The support main body is divided into an upper support and a lower support connected to the tongs and the hook portion is provided, the buffer between the upper support and the lower support in accordance with the ballistic deformation in the vertical direction Heavy duty tongs device characterized in that the spring is further provided with a load buffer portion embedded therein. The method of claim 4, wherein
The inside of the spring member is provided with a guide cylinder which is connected to any one of the upper support and the lower support, and a guide rod provided on the other side to guide the vertical movement along the inside of the guide cylinder .

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