WO2022075521A1

WO2022075521A1 - Traction ring for industrial machine provided with spring-actuated rotating member

Info

Publication number: WO2022075521A1
Application number: PCT/KR2020/016831
Authority: WO
Inventors: 황규관
Original assignee: 황규관
Priority date: 2020-10-05
Filing date: 2020-11-25
Publication date: 2022-04-14
Also published as: KR102193799B1

Abstract

The present invention relates to a traction ring for an industrial machine installed on a coupler of an excavator, etc. A fixing bolt is coupled to one side of a housing, a rotating member is rotatably connected to the fixing bolt, and a spring that upwardly presses the rotating member is installed such that the rotating member can be conveniently rotated and fixed and a rope fastening operation can be conveniently performed. In addition, the rotating member cannot easily escape due to a separation prevention groove after the fastening operation, thereby improving the stability of a traction operation. The spring does not only upwardly press the rotating member, but also horizontally rotates the rotating member toward the industrial machine to push and make the rotating member come into close contact with the industrial machine. Thus, the rotating member can be protected when the traction operation is not performed, and a tolerance is provided between the rotating member and the fixing bolt to make the operation more convenient when the rotating member is separated from or connected to the housing.

Description

Traction hook for industrial machines with a spring-actuated rotating member

The present invention relates to a traction ring for an industrial machine mounted on a coupler of an excavator, etc., and relates to a traction ring for an industrial machine equipped with a rotation member operated by a spring, which is easy to operate and is not easily loosened.

In general, various work tools (attachments) such as buckets and breakers are attached to the tip of the arm of the excavator, which is an industrial machine. A link with a hydraulic cylinder is widely used for attachment.

In addition, a towing hook is installed in the front part of the link for use when lifting or unloading the work tools from the vehicle for moving or replacing various work tools that are heavy objects.

It is used in the form of moving a weight by fitting one side of a band or wire to the traction ring and connecting a weight to the other side.

However, the traction ring is formed in an approximately "U" shape in cross section and is used by inserting a band or wire therein. In the process of moving a heavy object, the band or wire connected to the traction ring is connected by an external impact. Safety accidents in which a moving heavy object falls due to damage to the condition frequently occurs.

In order to prevent a safety accident due to the fall of a heavy object as described above, in recent years, the inserted part of the tow hook is sealed with a band or wire inserted using a sealing pin (not shown) or inserted in a "U" shape. By forming a female screw hole (not shown) in the portion and sealing the inserted portion by fastening with a screw, there are provided configurations to prevent the fall of a heavy object by maintaining the connection state of the band or wire without damage.

Looking at the configuration of one embodiment of the traction ring that can prevent the fall of a heavy object as described above, in "a detachable device for an attachment of a construction machine" (Korean Patent Application Laid-Open No. 10-2001-0077668, Patent Document 1), the traction The release prevention plate formed in the ring is connected to have elasticity by a spring and is configured to prevent the band or wire inserted into the traction ring from falling out.

In Patent Document 1, the release prevention pin has a problem in that it is easily damaged by an external impact to a bar configured by bending a metal plate, so there is a problem in that the continuous intermittent band or wire cannot be maintained.

In order to solve the above problems, in recent years, a through hole and a female threaded hole are formed in the open inlet part of the traction ring to seal the open part through bolt fastening, thereby preventing the band or wire from falling out. However, during the excavator's work, foreign substances such as sand and soil easily flow into the inside of the female screw hole and the female screw hole is easily clogged.

As another technique, a structure for fixing a fastening pin penetrating a U-shaped housing with a small bolt is proposed in "Link for an excavator having an improved traction ring" (Korean Patent Publication No. 10-1882692, Patent Document 2). However, the above configuration has a problem that the fastening pin is easily damaged due to the processing of the fastening pin, and has the inconvenience of having to loosen and tighten the bolts daily every time it is used.

*Prior art literature*

(Patent Document 1) KR 10-2001-0077668 (2001.08.20)

(Patent Document 2) KR 10-1882692 (2018.07.23)

The traction ring for industrial machines provided with a rotating member operated by a spring of the present invention is to solve the problems occurring in the prior art, a fixing bolt is fastened to one side of the housing, and a rotating member is provided to the fixing bolt. It is connected to be rotatably connected, and a spring for upwardly pressing the rotating member is installed so that the rotating member can be easily rotated and fixed, so that the rope fastening operation can be made conveniently.

In addition, the rotation member is to be able to increase the stability of the traction operation by being caught in the separation prevention groove after the fastening operation and not easily come out.

In addition, the spring not only pressurizes the rotating member upward, but also horizontally rotates the rotating member toward the industrial machine and pushes it into close contact with the industrial machine to protect the rotating member when not traction work.

In addition, by providing a tolerance between the rotation member and the fixing bolt, it is intended to make the operation more convenient when the rotation member is detached from the housing or connected.

In order to solve the above problems, the traction ring for industrial machines provided with a rotating member operated by a spring of the present invention is welded and fixed to the industrial machine 11 and is integral with the welding fixing part 11 It consists of a round part 12 taking a rounded shape while connected to the round part 12, and a spaced part 13 spaced apart from the welding fixing part 11 while being integrally connected with the round part 12, and the A bolt fastening hole 11a is formed at the end of the welding fixing part 11 in the longitudinal direction of the welding fixing part 11, and the spaced part 13 has a guide groove formed by a predetermined distance from the side toward the center. (13a) and the housing 10 communicated with the guide groove (13a), the upper portion is formed with a separation preventing groove (13b) made higher than the height of the guide groove (13a); The lower part is screwed to the lower part of the bolt fastening hole 11a of the welding fixing part 11, and the middle part is a fixing bolt fixed to the welding fixing part 11 with an outer circumferential surface spaced apart from the inner circumferential surface of the bolt fastening hole 11a. (20) and; It is composed of a ring-shaped fastening part 31 having a through hole 31a through which the fixing bolt 20 passes, and an extension part 32 extending in a straight line while being connected to the fastening part 31. A rotation member 30 that is connected to be vertically movable and horizontally rotatable about a bolt 20, and the extension part 32 is fitted into the guide groove 13a and the separation prevention groove 13b according to the rotation; ; The lower part is inserted into the bolt fastening hole (11a) while wrapping the outer peripheral surface of the fixing bolt (20), and the upper part is connected to the rotation member (30) to cause the rotation member (30) fastened to the fixing bolt (20). The spring 40 is installed to apply pressure upwards; is configured to include.

In the above configuration, the spring 40 is made of a coil spring, and one end and the other end each include a straight straight part 41 and a straight part 42 extending in a straight line, and the welding fixing part One side fixing groove 11b communicating with the bolt fastening hole 11a is formed on the side wall surface of 11, and one side straight part 41 of the spring 40 is fitted into the one side fixing groove 11b, and the The rotating member 30 has a stepped portion 33 in which the connection portion of the fastening portion 31 and the extended portion 32 is connected in a stepped manner, and the other side fixing groove 33a is formed in the stepped portion 33 . formed so that the other straight part 42 of the spring 40 is fitted into the other fixing groove 33a, so that the rotation member 30 is directed to the outside of the guide groove 13a and the separation prevention groove 13b It is characterized in that it has elasticity.

In addition, the bolt fastening hole 11a of the welding fixing part 11 includes a screwing hole 111 having a screw thread formed on the inner circumferential surface so as to be screwed with the lower part of the fixing bolt 20; a middle hole 112 formed in the upper part of the screw coupling hole 111; It is formed on the upper portion of the intermediate hole 112, and the inner diameter is larger than that of the intermediate hole 112, so that a stepped portion 113 is formed at the connection portion with the intermediate hole 112, and It characterized in that it consists of; a spring installation hole 114 in which the spring 40 is installed between them.

In addition, the through hole 31a of the rotating member 30 is formed large so that the inner circumferential surface is spaced apart from the outer circumferential surface of the fixing bolt 20 so that the extension part 32 is spaced apart from the fixing bolt 20 as an axis as much as a tolerance. It is made to be rotatable, and the end of the extension part 32 is fitted into the guide groove 13a by the rotation.

In addition, the industrial machine is characterized in that the excavator link.

According to the present invention, the fixing bolt is fastened to one side of the housing, and the rotation member is rotatably connected to the fixing bolt, and a spring for pressing the rotation member upward is installed to easily rotate and fix the rotation member to perform the rope fastening operation. can be done easily.

In addition, the rotating member is caught in the separation prevention groove after the fastening operation and cannot easily come out, thereby increasing the stability of the traction operation.

In addition, the spring not only pressurizes the rotating member upward, but also horizontally rotates the rotating member toward the industrial machine and pushes it into close contact with the industrial machine, thereby protecting the rotating member when not traction work.

In addition, by providing a tolerance between the rotation member and the fixing bolt, it is possible to make the operation more convenient when the rotation member is detached from the housing or connected.

1 is a perspective view showing an example of installation and operation of a traction ring for an industrial machine provided with a rotation member operated by a spring of the present invention.

Figure 2 is an exploded perspective view showing a traction ring for an industrial machine provided with a rotating member operated by a spring of the present invention.

Figure 3 is a cross-sectional view showing the assembly sequence of the traction ring of the present invention.

Figure 4 is a cross-sectional view showing the operating state of the traction ring of the present invention.

Figure 5 is a photograph showing the operating state of the tow hook of the present invention.

6 and 7 are photos showing the operating state of the tow hook of the present invention in detail.

8 is a cross-sectional view showing an operating state when a tolerance is placed on the rotating member in the present invention.

9 and 10 are photographs showing an actual operating state according to the configuration of FIG.

*Detailed explanation of the main symbols in the drawing*

1: Link

10: housing

11: welding fixing part

11a: bolted hole

111: screw hole

12: middle hole

113: step part

114: spring installer

11b: fixed groove on one side

12: round part

13: separation part

13a: guide home

13b: escape prevention groove

20: fixing bolt

21: thread

30: rotation member

31: fastening part

31a: through hole

32: extension

33: step part

33a: other side fixing groove

40: spring

41: one side straight part

42: other straight part

Hereinafter, with reference to the accompanying drawings, it will be described in detail with respect to the traction ring for industrial machines provided with a rotating member operated by a spring of the present invention.

The present invention is largely composed of a housing (10), a fixing bolt (20), a rotating member (30), and a spring (40).

The housing 10, which is a component of the present invention, as a whole takes a “U” shape.

More specifically, a welding fixing part 11 fixed by welding to an industrial machine such as the link 1 of an excavator, and a round part 12 taking a rounded shape while integrally connected with the welding fixing part 11; It consists of a spaced apart portion 13 in a state facing the welding fixing portion 11 while integrally connected to the round portion (12).

In this configuration, a bolt fastening hole 11a is formed at an end of the welding fixing part 11 in the longitudinal direction of the welding fixing part 11 in this configuration.

The bolt fastening hole 11a is more specifically, as shown in FIG. 3, a screwing hole 111 having a screw thread formed on the inner circumferential surface so as to be screwed with the lower part of the fixing bolt 20; a middle hole 112 formed in the upper part of the screw coupling hole 111; It is formed on the upper portion of the intermediate hole 112, and the inner diameter is larger than that of the intermediate hole 112, so that a stepped portion 113 is formed at the connection portion with the intermediate hole 112, and It consists of a spring installation hole 114 in which the spring 40 is installed between them.

In addition, the separation portion 13 has a guide groove 13a recessed by a predetermined distance from the side toward the center, and a separation prevention groove communicating with the guide groove 13a but having an upper portion higher than the height of the guide groove 13a. (13b) is formed.

At this time, one side fixing groove 11b communicating with the bolt fastening hole 11a is formed on the side wall surface of the welding fixing part 11, and one end of the spring 40 may be fitted thereinto.

When the one fixing groove 11b is formed, the spring 40 together with the other fixing groove 33a to be described later provides elasticity to the rotation member 30 to rotate in the horizontal direction.

As shown in the figure, the fixing bolt 20, which is a component of the present invention, is screwed to the lower part of the bolt fastening hole 11a of the welding fixing part 11, and the outer peripheral surface of the middle part is the bolt fastening hole 11a. It is fixed to the welding fixing part 11 while being spaced apart from the inner circumferential surface.

To this end, a screw thread 21 for screwing into the screw coupling hole 111 is formed in the lower portion of the fixing bolt 20 , and the upper side of the screw thread 21 has a smooth surface.

The rotating member 30, which is a component of the present invention, is connected to the fixing bolt 20 so as to be vertically movable and horizontally rotatable, and is composed of a fastening part 31 and an extension part 32.

The fastening part 31 takes a ring shape in which the through hole 31a through which the fixing bolt 20 passes is formed, as shown.

The extension part 32 extends in a straight line while being integrally connected to the fastening part 31 .

The rotation member 30 is movable up and down along the fixing bolt 20, and is connected to be rotatably horizontally rotatable about the fixing bolt 20, and the extension part 32 is rotated in the guide groove. (13a) and the separation prevention groove (13b) is fitted.

At this time, in order to allow the rotation member 30 to rotate by elasticity in the horizontal direction, a stepped portion 33 is formed in which the connection portion of the fastening portion 31 and the extension portion 32 is stepped in a stepwise manner, The other side fixing groove (33a) may be formed in the stepped portion (33).

In this case, as the other end of the spring 40 is fitted into the other fixing groove 33a, the rotation member 30 is elastic to rotate horizontally to the outside of the guide groove 13a and the separation prevention groove 13b. allows you to have

The spring 40, which is a component of the present invention, is inserted into the bolt fastening hole 11a while surrounding the outer circumferential surface of the fixing bolt 20, and the upper part is connected to the rotation member 30 and the rotation member 30 ) to apply upward pressure.

This spring 40 operates to push the rotating member 30 upward.

That is, the user rotates the rotation member 30 while pressing it downward so that the extension part 32 passes the guide groove 13a and is positioned in the separation prevention groove 13b. When the pressed hand is released, the rotation member 30 moves upward by the restoring force of the spring 40 so that the end of the extension part 32 is caught on the upper end of the separation prevention groove 13b and cannot come out.

At this time, when the spring 40 not only presses the rotating member 30 upward, but also allows the rotating member 30 to have elasticity to horizontally rotate toward the body side of the industrial machine, the operator ), the rotating member 30 automatically rotates to the body side of the industrial machine by elasticity when the extension part 32 is pulled out of the separation prevention groove 13b, making it easier to hang the rope, and the rotating member (30) is usually in close contact with the body of the industrial machine, it is possible to prevent damage to the rotating member (30).

To this end, the spring 40 is made of a coil spring, and one end and the other end are each composed of a straight straight part 41 and a straight part 42 extending in a straight line, and the straight part 41 is the above-mentioned. It is fitted in one fixing groove 11b, and the other straight part 42 is fitted in the other fixing groove 33a described above, thereby causing the rotation member 30 to guide groove 13a and separation prevention groove 13b. It can be made to have elasticity toward the outside.

On the other hand, in order for the rotating member 30 to take out the extension part 32 from the separation prevention groove 13b, it is necessary to strongly press the extension part 32 downward, as shown in Figs. As shown, the through-hole 31a of the rotating member 30 is formed large so that the inner circumferential surface is spaced apart from the outer circumferential surface of the fixing bolt 20 so that the extension part 32 uses the fixing bolt 20 as an axis. It can be configured to be rotatable as much as the tolerance.

In this case, when the operator presses the end side of the extension part 32, the extension part 32 corresponds to the spaced distance between the through hole 31a and the outer peripheral surface of the fixing bolt 20 so that the fixing bolt 20 is the axis. It rotates downward, and by this rotation, the end of the extension part 32 falls into the guide groove 13a and horizontally rotates, so that the rotation member 30 can be more easily manipulated.

The assembly of the traction ring for industrial machines provided with the rotation member operated by the spring of the present invention as described above is shown in FIG. 3 .

First, the fixing bolt 20 is inserted into the through hole 31 to connect the rotating member 30 to the fixing bolt 20 .

Then, the spring 40 is inserted into the fixing bolt 20 fitted to the rotation member 30 .

Then, a series of assembly by firmly fastening the fixing bolt 20 to the bolt fastening hole 11a of the housing 10 while allowing the one side straight part 41 of the spring 40 to be fitted into the one side fixing groove 11b. This is done easily.

4 and 5 show the operating state of the traction ring of the present invention assembled in this way.

As can be seen from the drawings, while the rotating member 30 is vertically pressed in the assembled state, the rotating member 30 is rotated around the fixing bolt 20 so that the end of the extension part 32 is guided through the guide groove 13a. ) through the separation prevention groove (13b) and positioned inside.

Then, when the hand pressing the rotation member 30 is released, the rotation member 30 moves upward by the elasticity of the spring 40, and the extension part 32 comes into contact with the upper end of the separation prevention groove 13b. The end of (32) is not able to escape through the guide groove (13a).

If the rotation member 30 is to be rotated in the opposite direction, the rotation member 30 is also pressed downward and then the extension part 32 is rotated to take it out.

On the other hand, in FIGS. 6 and 7 , one side straight part 41 and the other straight part 42 of the spring 40 are fitted in the one fixing groove 11b and the other fixing groove 33a, respectively, and the extension part 32 ) moves toward the separation prevention groove 13b, forcibly pulls the other straight part 42 so that the spring 40 has a restoring force in the horizontal direction, and when the force is released, the state of rotation toward the body side of the industrial machine is shown has been

Meanwhile, FIGS. 9 and 10 show an operating state when a tolerance is set in the through hole 31a of the fastening part 31 .

As can be seen from the drawings, when the operator presses the extension part 32, the extension part 32 rotates downward about the fixing bolt 20 as an axis, so that the extension part 32 moves from the upper part of the separation prevention groove 13b to the lower part. The moving state is shown.

In this case, as described above, since the spring 40 has the elasticity to forcibly rotate the rotation member 30 horizontally, the extension part 32 of the rotation member 30 naturally rotates toward the body of the industrial machine.

As described above, the traction ring for industrial machines provided with a rotating member operated by a spring of the present invention includes the fixing bolt 20 while sandwiching the rotating member 30 and the spring 40 to the fixing bolt 20 . Since it is only necessary to fasten the bolts to (10), assembly and disassembly become very easy.

In addition, when all or part of the rotation member 30 is pressed down during operation, the rotation member 30 automatically rotates to secure a space for installing the rope, so the rope installation operation is also made very easily.

In addition, after the installation of the rope is finished, the extension part 32 takes a state in which it is hung by the separation prevention groove 13b, and the rope is in a state of pulling the extension part 32 upwards, so the phenomenon of separation of the rope during towing is prevented. Since it does not occur, it is possible to secure safety during towing work.

The present invention will be applied to the traction ring of various industrial machines, such as the coupler of the excavator.

Claims

In the traction hook for an industrial machine,

A welding fixing part 11 fixed by welding to an industrial machine, a round part 12 taking a rounded shape while integrally connected with the welding fixing part 11, and the round part 12 integrally connected with the It consists of a separation part 13 spaced apart from the welding fixing part 11 in a facing state, and a bolt fastening hole 11a is formed at an end of the welding fixing part 11 in the longitudinal direction of the welding fixing part 11 in the longitudinal direction. formed, and in the separation portion 13, a guide groove 13a formed by being recessed by a predetermined distance from the side toward the center, and communicating with the guide groove 13a, the upper part of which is higher than the height of the guide groove 13a a housing 10 in which a prevention groove 13b is formed;

The lower part is screwed to the lower part of the bolt fastening hole 11a of the welding fixing part 11, and the middle part is a fixing bolt fixed to the welding fixing part 11 with an outer circumferential surface spaced apart from the inner circumferential surface of the bolt fastening hole 11a. (20) and;

It consists of a ring-shaped fastening part 31 having a through hole 31a through which the fixing bolt 20 passes, and an extension part 32 extending in a straight line while connected to the fastening part 31, A rotation member 30 connected to the bolt 20 to be vertically movable and horizontally rotatable about the axis, and configured to fit the extension part 32 into the guide groove 13a and the separation prevention groove 13b according to the rotation; ;

The lower part is inserted into the bolt fastening hole (11a) while wrapping the outer peripheral surface of the fixing bolt (20), and the upper part is connected to the rotation member (30) to cause the rotation member (30) fastened to the fixing bolt (20). A spring 40 that is installed to apply pressure upwards; configured to include,

Traction hook for industrial machinery with a rotating member actuated by a spring.
The method of claim 1,

The spring 40 is made of a coil spring, and one end and the other end are each composed of a straight straight part 41 and a straight part 42 extending in a straight line,

One side fixing groove 11b communicating with the bolt fastening hole 11a is formed on the side wall surface of the welding fixing part 11, so that one side straight part 41 of the spring 40 is in one side fixing groove 11b. is plugged in,

The rotation member 30 has a stepped portion 33 in which the connection portion of the fastening portion 31 and the extension portion 32 is connected in a stepped manner, and the other side fixing groove 33a is formed in the stepped portion 33 . This is formed so that the other straight part 42 of the spring 40 is fitted into the other fixing groove 33a,

Characterized in that the rotation member 30 has elasticity toward the outside of the guide groove 13a and the separation prevention groove 13b,

Traction hook for industrial machinery with a rotating member actuated by a spring.
3. The method of claim 2,

The bolt fastening hole 11a of the welding fixing part 11 is,

a screw coupling hole 111 having a screw thread formed on the inner circumferential surface so as to be screwed with the lower portion of the fixing bolt 20;

a middle hole 112 formed in the upper part of the screw coupling hole 111;

It is formed on the upper portion of the intermediate hole 112, and the inner diameter is larger than that of the intermediate hole 112, so that a stepped portion 113 is formed at the connection portion with the intermediate hole 112, and A spring installation hole 114 in which the spring 40 is installed between; characterized in that it is composed of,

Traction hook for industrial machinery with a rotating member actuated by a spring.
The method of claim 1,

The through hole 31a of the rotating member 30 is formed large so that the inner circumferential surface is spaced apart from the outer circumferential surface of the fixing bolt 20 so that the extension part 32 can rotate by the tolerance about the fixing bolt 20 as an axis. is done,

characterized in that the end of the extension part (32) is fitted into the guide groove (13a) by the rotation,

Traction hook for industrial machinery with a rotating member actuated by a spring.
The method of claim 1,

characterized in that the industrial machine is an excavator link,

Traction hook for industrial machinery with a rotating member actuated by a spring.