JP5490749B2 - Cable / hose support protection device mounting structure, cable / hose support protection device and converter brick slab demolition machine - Google Patents

Description

  The present invention includes a structure for movably mounting a cable / hose support / protection device for supporting a hose or a cable in a telescopic boom, a cable / hose support / protection device suitable for using the mounting structure, and these mounting structures. The present invention relates to a converter brick metal dismantling machine.

  Conventionally, a cable that consists of two link plates as a unit, each link plate being connected by a pin so that it can be bent, and a holding body holding a hose or the like attached between the two link plates of each set There is a hose support protection device. As a conventional device using such a cable / hose support / protection device in a telescopic boom, there is one used for a telescopic boom of a demolition machine for dismantling bricks and bullion on the inner wall of a converter as described in Patent Document 1. . In this dismantling machine, a cable / hose support / protection device holds a hose through which a fluid used in the work tool flows in a telescopic boom having a work tool such as a breaker or a ripper attached to the tip.

  FIG. 8 is a longitudinal sectional view of the telescopic boom showing the attachment structure of the cable / hose support protection device in the telescopic boom similar to that described in Patent Document 1, and FIG. 9 is a lateral sectional view of the telescopic boom. In FIG. 8, reference numeral 70 denotes a telescopic boom, and the telescopic boom 70 has an outer boom 71 and an inner boom 72. Reference numeral 73 denotes a hydraulic cylinder for extending and retracting the telescopic boom 70, and the bottom side end portion is connected to the inner boom 72 and the piston rod is connected to the outer tab 71. Reference numeral 75 denotes a cable / hose support / protection device for holding a hose 77 for sending air to the work tool 76 attached to the tip of the inner boom 72. One end of the cable / hose support / protection device 75 is connected to the outer tab 71 by the connecting portion 71a, the middle portion 75a is folded in a folded shape, and the other end is connected to the inner boom 72 and connected to the connecting portion 72a.

  In FIG. 9, reference numeral 78 denotes a cable / hose support / protection device guide attached to the inner surface of the outer tab 71 so as to slidably hold the cable / hose support / protection device 75 from both sides. In the cable / hose support protection device 75, the connection portion 72 a of the cable / hose support protection device 75 to the inner boom 72 moves as the telescopic boom 70 extends / contracts, and the bent portion 75 a of the cable / hose support protection device 75 moves. Also move.

JP-A-8-49010

  However, since the conventional cable / hose support protection device 75 is not supported in the middle, the cable / hose support protection between the bent portion 75a of the cable / hose support protection device 75 and the connection portion 72a of the inner boom 72 is provided. Due to the weight of the device 75 and hose 78, it bends downward as shown at 75b in FIG. Then, when the telescopic boom 70 is expanded and contracted, if it is further bent in this bent state, an excessive force may act on the cable / hose support / protection device 75, and the cable / hose support / protection device 75 There was a problem of the possibility of damage.

  In view of the above problems, the present invention is suitable for use in a cable / hose support / protection device mounting structure having a configuration capable of preventing damage due to bending of the cable / hose support / protection device accompanying expansion / contraction of the telescopic boom. An object of the present invention is to provide a cable / hose support protection device and a converter brick metal dismantling machine.

The mounting structure of the cable / hose support protection device according to claim 1 is:
It has a structure in which two link plates are made into one unit, a hose holder is attached between the two link plates, and the link plates on one side of each unit and the link plates on the other side are connected to each other so that they can be bent. ,
One end is connected to the inner surface of one of the booms that is relatively outside of the telescopic boom in which a plurality of booms of different sizes are telescopically fitted, and the middle part is bent in a folded shape, and the other end from the curved part The portion that reaches the part faces the other inner surface that is the surface opposite to the one inner surface of the boom that is the outer side, and the other end portion is movably fitted to the outer boom. In the mounting structure of the cable / hose support protection device connected to the relatively inner boom,
A cable / hose support / protection device guide having a pair of guide plates sandwiching the cable / hose support / protection device movably from both sides is provided on a portion of the boom that is on the outside and extending in the longitudinal direction of the other inner surface; Of the cable / hose support / protection device guide provided in the longitudinal direction on the one and other inner surfaces of the outer boom, from the vicinity of the curved portion to the vicinity of the other end of the cable / hose support / protection device Provide guide rails on the mutually opposing surfaces of the guide plate of the cable / hose support protection device guide,
Attach guided pieces on both sides of the cable / hose support protection device,
The guided piece is configured to be slidably contacted with the guide rail between the guide rail and the other inner surface to prevent bending of the cable / hose support / protection device.

The cable / hose support / protection device according to claim 2 is a cable / hose support / protection device used in the mounting structure of the cable / hose support / protection device according to claim 1,
A hose holder for holding a hose between two link plates is attached to a part of each unit constituting the cable / hose support protection device by a bolt inserted into a bolt insertion hole provided in the link plate. ,
In the remaining units other than the unit to which the hose holder is attached, instead of the hose holder, bolts that pass through the bolt insertion holes provided in the link plate are used on the outer surfaces of the two link plates, respectively. The guided piece is attached.

  A converter brick bullion dismantling machine according to claim 3 includes an attachment structure for the cable / hose support protection device according to claim 1 or an extendable boom having the cable / hose support protection device according to claim 2. Features.

  According to the first aspect of the present invention, the cable / hose support / protection device guide not only prevents the cable / hose support / protection device from shaking, but the cable / hose support / protection device guide is provided with the cable / hose support / protection device guide. Since it is structured to prevent the bending of the cable / hose support / protection device by contacting the guided pieces provided on both sides of the support / protection device, the bending of the cable / hose support / protection device due to gravity is prevented. . For this reason, when the cable / hose support / protection device is bent in accordance with the contraction of the boom, the cable / hose support / protection device is not subjected to a force in a further bending direction, and the cable / hose support / protection device can be prevented from being damaged. In addition, since the life of the cable / hose support / protection device can be extended, the replacement frequency of the cable / hose support / protection device can be lowered, and the running cost can be reduced.

  According to the second aspect of the present invention, the guided piece provided in the cable / hose support / protection device according to the present invention utilizes the bolt insertion hole originally provided in the cable / hose support / protection device for attaching the hose holder. Therefore, the cable / hose support / protection device in which the guided piece is attached instead of the hose holder can be configured without significantly modifying the structure of the existing cable / hose support / protection device. Therefore, the cable / hose support / protection device can be manufactured easily and inexpensively without significantly modifying the structure of the existing cable / hose support / protection device.

  According to the invention of claim 3, since the converter brick bullion dismantling machine is provided with the cable / hose support protection device mounting structure, the replacement frequency of the cable / hose support protection device can be reduced, and as a result, Therefore, it is possible to provide a converter brick bullion dismantling machine with a high operating rate.

It is a side view which shows an example of the converter brick slab demolition machine to which the attachment structure of the cable hose support protection apparatus of this invention is applied. (A) is a longitudinal cross-sectional view of the telescopic boom showing an embodiment of the cable / hose support / protection device mounting structure of the present invention, and (B) is an enlarged cross-sectional view thereof. It is a partial cross section side view which shows the structure of the telescopic boom front-end | tip of this embodiment. It is a transversal direction sectional view of the telescopic boom of this embodiment. (A) is the principal part enlarged view of FIG. 4, (B) is EE sectional drawing of (A). It is longitudinal direction sectional drawing which shows the attachment structure of the cable / hose support protection apparatus guide in the telescopic boom of this embodiment. (A) is a side view of the cable / hose support protection device of this embodiment, and (B) is an exploded side view thereof. It is longitudinal direction sectional drawing of the expansion-contraction boom which shows the attachment structure of the conventional cable and hose support protection apparatus. It is a transversal direction sectional view of the expansion-contraction boom which shows the attachment structure of the conventional cable and hose support protection apparatus.

  FIG. 1 is a side view showing an example of a converter brick metal dismantling machine to which the cable / hose support protection device mounting structure of the present invention is applied. In FIG. 1, 1 is a crawler type lower traveling body, 3 is an upper revolving body installed on the lower traveling body 1 via a revolving device 2 so as to be able to revolve, and this upper revolving body 3 is hydraulically mounted on a revolving frame 4. The power unit 5, the cab 6 and the counterweight 7 are mounted. Reference numeral 8 denotes a telescopic boom attached to the revolving frame 4 by a hydraulic cylinder 8a so that it can be raised and lowered. Reference numeral 9 denotes an air breaker attached to the tip of the telescopic boom 8 as a working tool.

  Reference numeral 10 denotes an air pipe attached to the revolving frame 4. An air hose (not shown) for sending compressed air (air) from a compressor (not shown) installed in a factory or the like is connected to a hose 20 (described later). Air is supplied to the air breaker 9 through FIG. 4 and FIG. Note that this air pipe 10 is not necessary when a compressor is mounted on the revolving frame 4.

  The telescopic boom 8 can be protruded and retracted into the boom base 11 that is raised and lowered by the hydraulic cylinder 8 a, a turning device 12 that makes the boom base 11 turn vertically by the turning motor 12 a that is a hydraulic motor, and the outer tab 13. And an inner boom 14 fitted therein.

  2A is a longitudinal sectional view of the telescopic boom 8, and FIG. 2B is a partially enlarged view thereof. 2 (A) and 2 (B), 15 is a hydraulic cylinder for extending and retracting the telescopic boom 8, and as shown in the side view of FIG. 3, its bottom side end is connected to the inner boom 14 by a pin 16, As shown in FIG. 2A, the piston rod is connected and attached to the outer tab 13 by a pin 17.

  2 (A) and 2 (B), reference numeral 19 denotes a cable / hose support / protection device for holding a hose 20 (described later) for sending air as a driving fluid of the air breaker 9. The cable / hose support protection device 19 has one end connected to the inner surface of one of the outer tabs 13 at the connecting portion 21, a middle portion is bent in a folded shape (the curved portion is indicated by 19 a), and the other end is inner. The boom 14 is attached to the end portion on the side of the outer tab 13 at the connection portion 22. The portion of the cable / hose support protection device 19 extending from the curved portion 19 to the connecting portion 22 at the other end faces the other inner surface which is the surface opposite to the one inner surface.

  In FIG. 2B, reference numerals 23 denote guide rollers attached to the four corners of the end portion of the inner boom 14 on the side of the outer tab 13. These guide rollers 23 are arranged at the four corners of the outer tab 13 as the telescopic boom 8 expands and contracts. It rolls on the inclined guide surface 13a (refer FIG. 4), and the expansion-contraction of the inner boom 14 is made smooth. In FIG. 2A, reference numeral 24 denotes a guide piece that is attached to the inner surface of the distal end of the outer tab 13 and guides the inner boom 14 by slidably contacting the inner boom 14.

  As shown in FIG. 3, the air breaker 9 is pivotally attached to the tip of the inner boom 14 around a pin 25, and the hydraulic cylinder rotates the air breaker 9 between the air breaker 9 and the inner boom 14. 26 is attached by connecting both ends thereof to the inner boom 14 and the air breaker 9 by pins 27 and 28, respectively.

  4 is a cross-sectional view in the short-side direction of the telescopic boom 8, and FIG. 4 and 5A, reference numeral 30 denotes a cable / hose support / protection device guide for guiding the cable / hose support / protection device 19, and the cable / hose support / protection device guide 30 is a substantially rectangular outer tab 13. Are provided in the longitudinal direction on the one inner surface and the other inner surface facing each other over the longitudinal direction. The cable / hose support / protection device guide 30 has guide plates 30b for guiding the cable / hose support / protection device 19 from both sides on both sides of the attachment plate 30a to the outer tab 13. The cable / hose support / protection device guide 30 is attached to two opposing surfaces of the inner surface of the outer tab 13 with bolts 32 and nuts 33.

  30c is a guide rail welded to the opposing surface of each guide plate 30b. As shown in the cross-sectional views of FIG. 2 (B) and FIG. 6, the guide rail 30c extends from the vicinity of the curved portion 19a of the cable / hose support / protection device 19 to the vicinity of the other end portion serving as the connecting portion 22. Provide.

  As shown in FIG. 5 (A) and the side views of FIG. 5 (B) and FIG. 7 (A) which are EE cross-sectional views of FIG. 5 (A), two cables / hose support protection devices 19 are provided. The link plates 35, 35 are configured as one unit, and the link plates 35 adjacent in the longitudinal direction are connected to each other by a connecting pin 36 so that the link plates can be bent with each other and the other link plates can be bent. .

  Further, as shown in the exploded side views of FIGS. 7A and 7B, a pin hole 37 into which the connecting pin 36 is inserted and upper and lower guide pins 38 are provided on one end side of each link plate 35. Pin holes 39 and 39 for insertion are provided. The other end of the link plate 35 is provided with a pin hole 40 into which the connecting pin 36 is inserted, and arc-shaped holes 41, 41 into which the upper and lower guide pins 38 are slidably inserted. These arc-shaped holes 41 and guide pins 38 serve to regulate the rotation angle between the units and to prevent rattling between the units.

  The pin holes 37 and 40 are aligned with each of the two link plates 35 and 35, and the adjacent link plates 35 are connected to each other by the connecting pins 36 so that they can be bent. At the same time, the pin holes 39 and the arc-shaped holes 41 of the adjacent link plates 35 and 35 are aligned, and the guide pins 38 are inserted into these to connect the adjacent link plates 35 to each other.

  Reference numeral 43 denotes a hose holding body for holding the hose 20, and the hose holding body 43 also has a role of connecting the two link plates 35 and 35 together. The hose holder 43 of this embodiment has an opening 43a through which the hose 20 is inserted as shown in FIGS. 5 (A) and 5 (B), and the hose holder 43 as shown in FIG. 7 (B). Between the link plates 35, 35, there is a screw hole 43b for mounting with a bolt 44. As shown in FIG. 7B, two upper and lower bolt insertion holes 45 for inserting the hose holder mounting bolts 44 are provided in the substantially central portion of the link plate 35. In addition, although the hose holding body 43 of this embodiment shows the example comprised by one block, it is good also as a split type which hold | maintains the hose 20 between upper and lower blocks.

  Reference numeral 47 denotes a guided piece which is movably brought into contact with the guide rail 30c to prevent the cable / hose support protection device 19 from being bent. The guided piece 47 is substantially L-shaped and is used for screwing a bolt 48 (see FIG. 5A) with the same interval as the interval between the two bolt insertion holes 45 provided in the link plate 35. A screw hole 47a is provided.

  The hose holder 43 is sandwiched between the two link plates 35, 35, and bolts 44 are inserted from outside the bolt insertion holes 45 of the link plate 35 and screwed into the screw holes 43 b of the hose holder 43. Then, it is attached between the two link plates 35 and 35 by fastening. In this embodiment, an example is shown in which the guided piece 47 is attached in place of the hose holder 43 at every other unit of each of the link plates 35, 35 in which two pieces are taken as one unit.

  That is, the guided piece 47 is brought into contact with the outer surface of the link plate 35, and the bolt 48 is passed through the bolt insertion hole 45 of the link plate 35 from the inside between the two link plates 35, 35. It is attached by screwing into the hole 47a and fastening. A contact surface 47b of the guided piece 47 with the guide rail 30c is formed in an arc shape as shown in FIG. With the arc-shaped contact surface 47b, in the vertical relationship shown in FIG. 4, the end of the guide rail 30c can be smoothly climbed when the telescopic boom 8 is extended.

  As shown in FIG. 2 (B), FIG. 4 and FIG. 5 (A), the cable / hose support / protection device 19 holding the hose 20 is connected at one end to the outer tab 13 at the connecting portion 21 and folded halfway. The guide piece 47 of the portion extending from the bending portion 19a of the cable / hose support / protection device 19 to the other end portion to be the connecting portion 22 to the inner boom 14 is curved on the guide rail 30c and the inner surface of the outer tab 13 Located between and. In the illustrated vertical relationship, the guided piece 47 between the curved portion 19a of the cable / hose support protection device 19 and the connecting portion 22 of the inner boom 14 rests on the guide rail 30c.

  In this embodiment, the cable / hose support / protection device 19 has the guided piece 47 positioned between the other inner surface of the outer tab 13 and the guide rail 30c, and the guided piece 47 contacts the guide rail 30c. Since the cable / hose support / protection device 19 is supported in contact with each other, the bending of the cable / hose support protection device 19 is prevented. It should be noted that the vertical relationship shown in FIG. 4 may be reversed or inclined by the turning device 12 that vertically turns the outer boom 13 of the telescopic boom 8 and the first boom 4. In this case, the cable / hose support is supported. The bending of the cable / hose support protection device 19 with the protection device 19 in contact with the mounting plate 30a of the cable / hose support protection device guide 30 or the side surface of the cable / hose support protection device 19 in contact with the guide plate 30b. Is prevented.

  Thus, in this embodiment, since the bending of the cable / hose support / protection device 19 is prevented, when the telescopic boom 8 contracts, the cable / hose support / protection device 19 is provided as in the conventional configuration. There is no situation in which a force is applied in a direction in which the bending further proceeds in the bent state. For this reason, it is possible to prevent the cable / hose support protection device 19 from being damaged due to excessive force as the telescopic boom 8 contracts. Further, since the life of the cable / hose support / protection device 19 can be extended, the replacement frequency of the cable / hose support / protection device 19 can be reduced, and the running cost can be reduced. In addition, since the replacement frequency of the cable / hose support / protection device can be lowered, by adopting the cable / hose support / protection device mounting structure of this embodiment to the converter brick metal dismantling machine, It becomes possible to provide a high converter brick metal dismantling machine.

  In this embodiment, the guided piece 47 is attached to the cable / hose support / protection device 19 by using the bolt insertion hole 45 originally provided for attaching the hose holder 43. The guided piece 47 can be attached in place of the hose holder 43 without significantly changing the structure of the cable / hose support / protection device. For this reason, the cable / hose support protection device 19 can be manufactured easily and inexpensively without significantly modifying the existing structure. In this embodiment, for each unit, the hose holder 43 and the guided piece 47 are alternately provided. However, the guided piece 47 may be provided for each unit, and the hose holder 43 may be provided. Instead of this, the guided piece 47 may be provided every two or three units.

  In addition, in this embodiment, although the case where the working tool used for the converter brick metal demolition machine was the air breaker 9 was shown, it is applicable also when the working tool is a hydraulic breaker. When a hydraulic breaker is used, the hose 20 held by the cable / hose support protection device 19 is a hydraulic hose.

  The present invention can also be used when the work tool is another work tool such as a ripper or a bucket. The cable / hose support protection device 19 can be applied not only when the hose 20 is held but also when an electric cable is used. The present invention can also be applied to a case where the telescopic boom is used in a work machine for other steelworks such as a chaotic vehicle or a slag dragger. The present invention can also be applied to a configuration in which the telescopic boom is not a one-stage telescopic structure, but is configured to expand and contract in two or more stages. The present invention can also be applied to a telescopic boom that does not have the turning device 12.

  In addition, when implementing this invention, not only the said embodiment but a various change and addition are possible about the structure and combination of each part in the range which does not deviate from the summary of this invention.

1: Lower traveling body, 2: Upper turning body, 3: Turning device, 4: Turning frame, 5: Hydraulic power unit, 6: Driver's cab, 7: Counterweight, 8: Telescopic boom, 8a: Hydraulic cylinder, 9: Air Breaker, 10: Air piping, 11: Boom base, 12: Swivel device, 12a: Swivel motor, 13: Outtab, 14: Inner boom, 15: Hydraulic cylinder, 19: Cable / hose support and protection device, 19a: Curved part, 20: Hose, 21, 22: Connection part, 23: Guide roller, 24: Guide piece, 26: Hydraulic cylinder, 30: Cable / hose support / protection device guide, 30a: Mounting plate, 30b: Guide plate, 30c: Guide rail , 35: link plate, 36: connecting pin, 37: pin hole, 38: guide pin, 39: pin hole, 40: pin hole, 41: arc-shaped hole, 43: Over scan holder, 44: Bolt, 45: bolt insertion hole, 47: the guide piece, 48: bolt

Claims (3)

It has a structure in which two link plates are made into one unit, a hose holder is attached between the two link plates, and the link plates on one side of each unit and the link plates on the other side are connected to each other so that they can be bent. ,
One end is connected to the inner surface of one of the booms that is relatively outside of the telescopic boom in which a plurality of booms of different sizes are telescopically fitted, and the middle part is bent back, and the other end from the curved part The portion that reaches the part faces the other inner surface that is the surface opposite to the one inner surface of the boom that is the outer side, and the other end portion is movably fitted to the outer boom. In the mounting structure of the cable / hose support protection device connected to the relatively inner boom,
A cable / hose support / protection device guide having a pair of guide plates sandwiching the cable / hose support / protection device movably from both sides is provided on a portion of the boom that is on the outside and extending in the longitudinal direction of the other inner surface; Of the cable / hose support / protection device guide provided in the longitudinal direction on the one and other inner surfaces of the outer boom, from the vicinity of the curved portion to the vicinity of the other end of the cable / hose support / protection device Provide guide rails on the mutually opposing surfaces of the guide plate of the cable / hose support protection device guide,
Attach guided pieces on both sides of the cable / hose support protection device,
The cable is characterized in that the guided piece is slidably abutted on the guide rail between the guide rail and the other inner surface to prevent bending of the cable / hose support / protection device. Hose support protection device mounting structure. In the cable / hose support protection device used in the cable / hose support protection device mounting structure according to claim 1,
A hose holder for holding a hose between two link plates is attached to a part of each unit constituting the cable / hose support protection device by a bolt inserted into a bolt insertion hole provided in the link plate. ,
In the remaining units other than the unit to which the hose holder is attached, instead of the hose holder, bolts that pass through the bolt insertion holes provided in the link plate are used on the outer surfaces of the two link plates, respectively. A cable / hose support / protection device, wherein the guided piece is attached.   A converter brick slab demolition machine comprising an attachment structure for the cable / hose support protection device according to claim 1 or a telescopic boom having the cable / hose support protection device according to claim 2.

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