JP6815737B2 - Chain disassembly machine - Google Patents

Description

The present invention relates to a chain disassembling machine used to separate a roller chain formed by connecting a plurality of pins in a ladder shape with a joint plate at a predetermined position.

For example, the roller chain 170 is used in a part of transport equipment such as a rolling mill for steel materials in the state shown in FIG. 8, but the chain is replaced during regular repairs. ing. When performing chain replacement work, it is necessary to disassemble the continuous roller chain 170 (hereinafter abbreviated as chain 170) at a predetermined position. Conventionally, the chain is formed by the procedure shown in FIGS. 8 and 9. Disassembly work is being carried out.

Specifically, as shown in FIG. 8, the outer link portion 171 of the chain 170 engages with the teeth 181 of the sprocket 180 as shown by the arrow line R in FIG. 8 in the stopped chain 170. As shown in FIG. 9, one end 190a of the jig 190 is brought into contact with the end 172a of the pin 172 exposed from the joint plate 173a of the outer link portion 171. A method is adopted in which the pin 172 is pushed out by hitting the other end 190b with a hammer 191 and separated together with the joint plate 173b.

On the other hand, as a conventional technique related to the present invention, for example, there is a "joint link attachment / detachment tool" described in Patent Document 1. As described in FIG. 4 and the like of Patent Document 1, this "joint link attachment / detachment tool" is composed of a bracket 54, a first pressing member 515, a second pressing member 715, and a driving means 6. It has become. The bracket 54 is provided on the pedestal 5 between the first pressing member 515 and the second pressing member 715, and the pedestal 5 is formed by extending the hanging portions 542 and 542 downward on both sides in the width direction. It can slide and move on.

The joint link 10 of the chain is placed on the bracket 54 and localized, and the drive means 6 is rotated to bring the second pressing member 715 into contact with the end of the joint pin 3 and press the joint pin 3 to push out the joint pin 3. be able to.

Utility Model Registration No. 3141851 Gazette

In the chain disassembling work as shown in FIGS. 8 and 9, since the hammer 191 must be repeatedly hit, the physical burden on the operator is large, which is not preferable from the viewpoint of work safety. Another problem is that as the size of the chain to be disassembled increases, the physical burden on the operator increases significantly.

On the other hand, if the "joint link attachment / detachment tool" described in Patent Document 1 is used, the striking work with a hammer becomes unnecessary, but this "joint link attachment / detachment tool" has a complicated structure and is inferior in holding stability of the chain. There is a face. Also, since both sides of the chain must be held during the disassembly work, it cannot be used in a narrow space. Further, this "joint link attachment / detachment tool" is heavy, and it is difficult to set the chain.

Therefore, an object to be solved by the present invention is to provide a chain disassembling machine which has a simple structure, is easy to use, can reduce the burden on the operator, and has excellent work safety.

The chain disassembly machine of the present invention
A base member having a pair of recesses capable of accommodating two adjacent rollers in a roller chain within the axial length of the rollers, and a base member.
A holding member having a pressing portion capable of sandwiching the two rollers housed in the recess with the recess, and
An engaging means that brings the base member and the holding member closer to each other and separated from each other.
It is characterized by comprising a pressing means for applying pressure in the axial direction of the pin to an end portion of the pin inserted into the roller sandwiched between the recess and the pressing portion.

With such a configuration, two adjacent rollers in the roller chain are placed in the recesses of the base member, and the holding member is arranged so as to cover the two rollers housed in the recesses, and the recesses and the holding members are held. A roller is sandwiched between the pressing portion of the member, and the base member and the holding member are held in close contact with each other by the engaging means. After that, when pressure is applied to the end of the pin that is inserted into the roller and exposed from the outer plate in the axial direction of the pin by the pressing means, the pin moves in the axial direction. Along with this, the joint link constituting the outer link also separates to the side of the chain and eventually comes off from the chain, so that the roller chain is in a split state at the part where the outer link existed. ..

Here, the engaging means may be a male screw member that rotatably penetrates one member of the base member or the holding member and is screwed into a female screw hole formed in the other member. desirable.

Further, the pressing means is
Two female screws opened at least one of the base member or the holding member at a position including an extension line of the axis of the pin in the two rollers sandwiched between the recess and the pressing portion. With a hole
It may be provided with a male screw member screwed into the female screw hole so as to be able to advance and retreat toward the end of the pin.

In addition, the pressing means
Two penetrations formed in at least one of the base member or the holding member at positions including extension lines of the axial centers of the two rollers sandwiched between the recess and the pressing portion. With a hole
A pressing member movably inserted into each of the two through holes in the axial direction,
It is also possible to provide a screw mechanism for moving the pressing member in the axial direction in conjunction with the pressing member.

On the other hand, at least one of the base member and the holding member may be provided with a reaction force receiving support member.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a chain disassembling machine which has a simple structure, is easy to use, can reduce the burden on the operator, and has excellent work safety.

It is an exploded perspective view which shows the chain disassembly machine which is 1st Embodiment of this invention. It is a vertical cross-sectional view of the chain disassembly machine shown in FIG. It is a perspective view which shows the base member which comprises the chain disassembly machine shown in FIG. It is a figure which looked at the holding member shown in FIG. 1 from the direction of arrow B. It is a partial notch side view which looked at the use state of the chain disassembly machine shown in FIG. 1 from the direction of arrow A in the figure. It is an exploded perspective view which shows the chain disassembly machine which is a reference embodiment. It is a figure which looked at the base member and holding member shown in FIG. 6 from the direction of arrow C. It is a figure which shows a part of the mechanical device which used a roller chain. It is a partially omitted diagram which shows the conventional chain disassembly work.

Hereinafter, the chain disassembling machines 100 and 200 according to the first and second embodiments of the present invention will be described with reference to FIGS. 1 to 7.

As shown in FIGS. 1 and 2, the chain disassembling machine 100 of the present embodiment has a plurality of male screw members constituting the base member 10, the holding member 20, and the means for engaging the base member 10 and the holding member 20. It includes 31, 32, a plurality of male screw members 41, 42 having different lengths constituting the pressing means described later, and a reaction force receiving support member 50 having an L-shape as a whole.

As shown in FIGS. 1 to 3, the base member 10 is formed of a steel material having a substantially J-shape when viewed from the direction of arrow A, and has a flat plate-shaped substrate portion 13 having a quadrangular bottom surface and a substrate portion 13. The base portion 14 includes a base portion 14 erected in a direction perpendicular to one edge portion and a wall body portion 15 erected in a direction perpendicular to the other edge portion of the substrate portion 13. A plurality of recesses 11 and 12 are provided on the upper surface. The recesses 11 and 12 are grooves having an arc-shaped cross section, and the outer peripheral surfaces of the rollers 3 and 4 of the roller chain 1 can be brought into surface contact with each other. (Hereinafter, "roller chain 1" is abbreviated as "chain 1".)

The length T of the recesses 11 and 12 (the length in the arrow Y direction in FIGS. 1 and 2) is the axis of the rollers 3 and 4 of the two rollers 3 and 4 adjacent to each other on the outer link 2 of the chain 1. Since the recesses 11 and 12 are slightly smaller than the length W in the core 3c and 4c directions, the recesses 11 and 12 accommodate the two adjacent rollers 3 and 4 within the lengths in the respective axial centers 3c and 4c. It is possible.

In the base member 10, the height of the wall body portion 15 (size in the Z direction in FIG. 1) is higher than that of the base portion 14, and the base portion 14 and the wall body portion 15 face each other in a parallel state. The wall body portion 15 is provided with two female screw holes 16 and 17 penetrating the wall body portion 15 in the arrow Y direction (the length direction of the recesses 11 and 12). The spacing between the female screw holes 16 and 17 in the arrow X direction is equivalent to the spacing between the recesses 11 and 12. Further, female screw holes 16 and 17 are provided at positions including extension lines of the axial centers 3c and 4c of the rollers 3 and 4 housed in the recesses 11 and 12.

As shown in FIGS. 1 to 3, the screw portions 41b and 42b of the male screw members 41 and 42 having the conical tip portions 41c and 42c can be screwed into the female screw holes 16 and 17, respectively. As will be described later, the male screw members 41 and 42 are sandwiched between the recesses 11 and 12 of the base member 10 and the recesses 21 and 22 of the pressing portion 23 of the holding member 20, and the rollers 3 and 4 of the chain 1 are sandwiched between them. A pressing means for applying pressure in the axial direction of the pins 5 and 6 to the ends 5a and 6a of the pins 5 and 6 inserted therein is configured.

Three female screw holes 15s, 15t, and 15u are provided in the upper surface portion 15a of the wall body portion 15 of the base member 10 along the arrow Z direction. The female screw holes 15s, 15t, and 15u all have a dead end shape. The end of the reaction force receiving member 50 is screwed into the female screw hole 15t located at the center of the three female screw holes 15s, 15t, and 15u. The screw portions 31a and 32a of the male screw members 31 and 32 constituting the engaging means described later can be screwed into the two female screw holes 15s and 15u located so as to sandwich the female screw hole 15t.

As shown in FIGS. 1, 2 and 4, the holding member 20 is a member that can be attached to the base member 10 so as to cover some portions of the recesses 11 and 12 of the base member 10, and is viewed from the arrow A direction. It has an L-shape. The holding member 20 is formed in a hanging shape from the fitting portion 25 in which the concave groove 24 into which the upper surface portion 15a of the wall body portion 15 of the base member 10 can be fitted is formed on the lower surface and the end portion of the fitting portion 25. A pressing portion 23 and a pressing portion 23 are provided.

As shown in FIG. 4, a plurality of recesses 21 and 22 are formed on the lower surface of the pressing portion 23. The recesses 21 and 22 are grooves having an arc-shaped cross section, and are in surface contact with the outer peripheral surfaces of the rollers 3 and 4. As will be described later, the recesses 21 and 22 can sandwich the two rollers 3 and 4 housed in the recesses 11 and 12 of the base member 10 between the recesses 11 and 12.

As shown in FIG. 1, the fitting portion 25 is provided with three through holes 25s, 25t, and 25u along the arrow X direction (the length direction of the concave groove 24). The arrangement intervals of the through holes 25s, 25t, 25u are equivalent to the arrangement intervals of the female screw holes 15s, 15t, 15u of the base member 10. Of the three through holes 25s, 25t, 25u, the inner diameters of the through holes 25s, 25u located at both ends are of a size that allows the threaded portions 31a, 32a of the male screw members 31, 32 to penetrate, and the through holes located at the center. The inner diameter of 25t is a size that the reaction force receiving member 50 can penetrate.

As shown in FIG. 1, in the chain disassembling machine 100, male screw members 31 and 32 rotatably penetrating the holding member 20 and a base as engaging means for bringing the base member 10 and the holding member 20 closer to each other and separated from each other. The member 10 is provided with female screw holes 15s and 15u.

Here, how to use the chain disassembling machine 100 will be described with reference to FIGS. 1, 2, and 5. As shown in FIGS. 1 and 2, with the reaction force receiving member 50 inserted through the through hole 25t of the holding member 20, the tip end portion of the reaction force receiving member 50 is inserted into the upper surface portion 15a of the wall body portion 15 of the base member 10. It is screwed into the female screw hole 15t in the center of the.

Next, with the holding member 20 separated from the base member 10, two adjacent rollers 3 and 4 in the chain 1 to be disassembled are placed in the two recesses 11 and 12 of the base member 10.

After that, the holding member 20 is moved toward the base member 10 along the longitudinal direction of the reaction force receiving member 50 and is engaged with each other. At this time, the upper portions of the outer peripheral surfaces of the rollers 3 and 4 housed in the recesses 11 and 12 of the base member 10 are fitted into the recesses 21 and 22 of the holding member 20, respectively, and the wall body portion of the base member 10 is fitted. The upper surface portion 15a of the 15 is fitted into the concave groove 24 of the holding member 20.

Next, the male screw members 31 and 32 are inserted from the through holes 25s and 25u of the holding member 20 toward the female screw holes 15s and 15u of the base member 10, and the screw portions 31a and 32a of the male screw members 31 and 32 are female. It is screwed into the screw holes 15s and 15u. After that, the male screw members 31 and 32 are tightened using an appropriate tool to fix the rollers 3 and 4 of the chain 1 so that they do not easily move or come off.

As a result, the rollers 3 and 4 are sandwiched between the recesses 11 and 12 of the base member 10 and the recesses 21 and 22 of the holding member 20, respectively, and a pair of inner plates forming the inner link 7 of the chain 1. 7a and 7b are in a state of sandwiching the base portion 14 of the base member 10 (see FIG. 5).

After that, as shown in FIG. 5, the male screw members 41 and 42 are screwed into the female screw holes 16 and 17 of the wall body portion 15 of the base member 10, respectively, and the heads 41a and 42a are screwed with an appropriate tool. As the male screw members 41 and 42 are rotated, the tips 41c and 42c of the male screw members 41 and 42 come into contact with the ends 5a and 6a of the pins 5 and 6, respectively (see FIG. 1). Since the lengths of the screw portions 41b and 42b of the male screw members 41 and 42 are different, they do not interfere with each other when the heads 41a and 42a are rotated.

After that, when the heads 41a and 42a are further rotated while using the reaction force receiving support member 50, the tip portions 41c and 42c of the male screw members 41 and 42 become the end portions 5a of the pins 5 and 6, respectively. , 6a will be pressed in the axial direction. Due to this pressing force, the pins 5 and 6 move in the arrow P direction along the axial direction, respectively, and the ends 5a and 6a are separated from the outer plate 2b of the outer link 2, so that the pins 5 and 6 are outside. It separates from the chain 1 together with the plate 2a. As a result, the chain 1 is in a disassembled state at the portion where the outer link 2 was located.

After that, the male screw members 41 and 42 are rotated in the reverse direction to separate them from the chain 1, and the male screw members 31 and 32 are loosened to separate the base member 10 and the holding member 20, and the rollers 3 and 4 are placed in the recesses 11 and 4. If it is removed from 12, the disassembly work is completed.

Since the chain disassembly machine 100 is composed of a base member 10, a holding member 20, male screw members 31, 32, 41, 42 and a reaction force receiving member 50, the structure is simple and easy to use. easy. In addition, since the striking work using a hammer is not required, the burden on the operator can be reduced and the work safety is excellent.

Further, since the chain disassembling machine 100 fixes the chain 1 from both the upper and lower directions by the base member 10 and the holding member 20, the chain 1 does not suddenly come off during the chain disassembling operation. Further, the chain disassembling machine 100 can perform the chain disassembling work even if there is no space on the back side (base portion 14 and pressing portion 23 side) of the chain 1.

Next, the chain disassembly machine 200, which is a reference embodiment, will be described with reference to FIGS. 6 and 7. In the constituent parts of the chain disassembling machine 200, the parts common to the constituent parts of the chain disassembling machine 100 described above are designated by the same reference numerals as those in FIGS. 1 to 5 and the description thereof will be omitted.

Similar to the chain disassembling machine 100 shown in FIG. 1, the chain disassembling machine 200 shown in FIG. 6 has two rollers 3 and 4 adjacent to each other in the chain 1 having lengths in the axial centers 3c and 4c of the rollers 3 and 4. The base member 60 having a pair of recesses 61 and 62 that can be accommodated within the range of the above, and the recess 71 that can sandwich the two rollers 3 and 4 accommodated in the recesses 61 and 62 between the recesses 61 and 62. A holding member 70 having a pressing portion 73 having the parts, 72 and 72 is provided.

Further, as an engaging means for bringing the base member 60 and the holding member 70 closer to each other, the female screw holes 15s, 15u formed in the base member 60 are penetrated through the through holes 25s, 25u formed in the holding member 70. It is provided with male screw members 31 and 32 that can be screwed into.

Further, it is provided in the base member 60 as a pressing means for applying pressure in the axial direction of the pin to the end of the pin inserted in the roller sandwiched between the recesses 61 and 62 and the recesses 71 and 72. In a state where the pressing member 80 having the two pressing rods 81 and 82 and the connecting portion 83 which are movably inserted into the two through holes 66 and 68 and the through hole 84 provided in the connecting portion 83 are penetrated. A male screw member 90 that can be screwed into the female screw hole 67 formed in the base member 60 and a nut 91 that is screwed into the male screw member 90 are provided.

The two through holes 66 and 68 of the base member 60 are extension lines of the axial centers of the pins in the two rollers sandwiched between the recesses 61 and 62 of the base member 60 and the recesses 71 and 72 of the holding member 70. It is opened in the position including.

Two rollers adjacent to each other in the chain are sandwiched between the recesses 61 and 62 of the base member 60 and the recesses 71 and 72 of the holding member 70, and then the base member 60 and the holding member 70 are held by the male screw members 31 and 32. To engage with.

Next, the pressing rods 81 and 82 of the pressing member 80 are inserted into the through holes 66 and 68 of the base member 60, respectively, and the male screw member 90 is inserted from the through hole 84 of the pressing member 80 into the female screw hole 67 of the base member 60. Screw towards and screw in to the proper position.

After that, when the nut 91 is rotated using an appropriate tool to bring the pressing member 80 closer to the base member 60, the conical tips 81c and 82c of the pressing rods 81 and 82 are inserted into the rollers. Since the end portion of the pin is pressed, the outer link portion can be removed and the chain can be disassembled as shown in FIG.

In the chain disassembling machine 200, by rotating one nut 91, the tips 81c and 82c of the two pressing rods 81 and 82 can simultaneously press and pull out the ends of the two pins of the chain. The work time is shortened, and the efficiency of chain disassembly work can be improved. Further, the cross-sectional shape of the recesses 61 and 62 of the base member 60 of the chain disassembly machine 200 is made into a 1/4 arc shape, and the size of this portion is reduced to realize weight reduction.

Incidentally, those chain cracker 10 0 described with reference to FIGS. 1 to 7 which illustrate the chain cracker according to the present invention, chain cracker according to the present invention is not limited to the chain cracker 10 0 described above ..

The chain disassembling machine of the present invention can be widely used in factories and the like where various mechanical devices and conveyor devices using a roller chain are installed.

1 Roller chain 2 Outer link 3, 4 Roller 3c, 4c Axial center 5, 6 Pin 5a, 6a End 7 Inner link 7a, 7b Inner plate 10 Base member 11, 12, 21, 22, Recessed 13 Board part 14 Base part 15 Wall body 15a Top surface 15s, 15t, 15u, 16, 17 Female screw part 20 Holding member 23 Pressing part 24 Concave groove 25 Fitting part 31, 32, 41, 42 Male screw member 31a, 32a, 41b, 42b Screw Part 50 Reaction force receiving support member 100,200 Chain disassembly machine

Claims (3)

A base member having a pair of recesses capable of accommodating two adjacent rollers in a roller chain within the axial length of the rollers, and a base member.
A holding member having a pressing portion capable of sandwiching the two rollers housed in the recess with the recess, and
An engaging means that brings the base member and the holding member closer to each other and separated from each other.
A pressing means for applying pressure in the axial direction of the pin to the end of the pin inserted into the roller sandwiched between the recess and the pressing portion.
With
The pressing means
Two female screws opened at least one of the base member or the holding member at a position including an extension line of the axis of the pin in the two rollers sandwiched between the recess and the pressing portion. With a hole
A male screw member screwed into the female screw hole so as to be able to move forward and backward toward the end of the pin.
A reaction for the operator to apply a reaction force to support the base member or at least one of the holding members so that the base member or the holding member does not rotate together when the head of the male screw member is rotated. A chain disassembly machine equipped with a force receiving support member. A base member having a pair of recesses capable of accommodating two adjacent rollers in a roller chain within the axial length of the rollers, and a base member.
A holding member having a pressing portion capable of sandwiching the two rollers housed in the recess with the recess, and
An engaging means that brings the base member and the holding member closer to each other and separated from each other.
A pressing means for applying pressure in the axial direction of the pin to the end of the pin inserted in the roller sandwiched between the recess and the pressing portion.
With
The pressing means
Two penetrations provided at least one of the base member or the holding member at positions including extension lines of the axial centers of the two rollers sandwiched between the recess and the pressing portion. With a hole
A pressing member having two pressing rods movably inserted into the two through holes in the axial direction and a connecting portion connecting the pressing rods, and a through hole provided in the connecting portion were penetrated. A male screw member that can be screwed into the female screw hole provided in the base member and a nut that is screwed into the male screw member in the state.
A reaction force receiving support member for an operator to apply a reaction force to support at least one of the base member or the holding member so that the base member or the holding member does not rotate together when the nut is rotated. Equipped chain disassembly machine. Claim 1 or 2 is a male screw member that rotatably penetrates one of the base member or the holding member and is screwed into a female screw hole formed in the other member. The described chain disassembly machine.

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