WO2015174552A1 - 作業車両のキャブ及びその製造方法 - Google Patents
作業車両のキャブ及びその製造方法 Download PDFInfo
- Publication number
- WO2015174552A1 WO2015174552A1 PCT/JP2015/069050 JP2015069050W WO2015174552A1 WO 2015174552 A1 WO2015174552 A1 WO 2015174552A1 JP 2015069050 W JP2015069050 W JP 2015069050W WO 2015174552 A1 WO2015174552 A1 WO 2015174552A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- cab
- work vehicle
- reinforcing beam
- bending
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
- E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
Definitions
- the present invention relates to a cab of a work vehicle and a manufacturing method thereof.
- ROPS fall-over protection structure
- a fall-over protection structure such as hydraulic excavators
- ROPS Roll-over Protective Structure
- Patent Document 1 a fall-over protection structure
- notches are provided on the left and right of the center portion of the beam on the top surface beam.
- the beam is bent into a V shape by being guided by the notch when the beam falls over. This prevents the cab from being deformed when it falls over the space occupied by the operator in the cab.
- the load on the cab at the time of falling increases as the weight of the work vehicle on which the cab is mounted increases. For this reason, the cab is required to have a strength corresponding to the weight of the work vehicle. Therefore, it is necessary to manufacture different types of cabs according to the weight of the work vehicle. However, in that case, there is a problem that the manufacturing process becomes complicated and the productivity is lowered.
- the work vehicle is equipped with a work machine, and various attachments such as buckets, breakers, and rippers are attached to the work machine. Therefore, even if the vehicle body of the work vehicle is the same, the weight of the work vehicle varies depending on the type of work machine to be attached. However, if different types of cabs are manufactured according to the type of work implement, the productivity is further reduced.
- An object of the present invention is to provide a cab for a work vehicle that has strength corresponding to the weight of the work vehicle and has good productivity.
- the work vehicle cab includes a standard frame and a reinforcing beam.
- the standard frame has a main frame and a roof plate.
- the main frame includes an upper left frame and an upper right frame extending in the front-rear direction.
- the upper left frame and the upper right frame are spaced apart from each other in the left-right direction.
- the roof plate is provided on the top surface of the main frame.
- the roof plate is attached to the upper left frame and the upper right frame.
- the reinforcing beam is attached to the upper left frame and the upper right frame.
- the reinforcing beam is disposed above the roof plate.
- the reinforcing beam has an upwardly convex shape.
- the strength of the standard frame can be improved by attaching the reinforcing beam to the upper left frame and the upper right frame of the standard frame.
- the strength of the cab can be adjusted according to the weight of the work vehicle.
- the reinforcing beam is disposed above the roof plate of the standard frame. Therefore, the reinforcing beam can be easily retrofitted to the standard frame. Therefore, it is possible to attach the reinforcing beam according to the weight of the work vehicle while sharing the standard frame.
- strength according to the weight of the work vehicle can be manufactured easily, and productivity can be improved.
- the main frame may further include a main beam attached to the upper left frame and the upper right frame.
- the main beam may be disposed below the roof plate.
- the intensity of the standard beam can be improved by the main beam.
- the strength is insufficient with only the main beam provided in the standard beam, it can be reinforced with the reinforcing beam.
- the main beam may have a bending guide part.
- the bending guide part guides the bending direction of the main beam when a load is applied to the main beam. In this case, by guiding the bending direction of the main beam by the bending guide portion, it is possible to prevent the cab from being deformed when the vehicle falls over in the space occupied by the operator in the cab.
- the reinforcing beam does not have to overlap the main beam. In this case, it is possible to prevent the reinforcing beam from interfering with the bending of the main beam.
- Enhance beam may be arranged behind the main beam. In this case, it is possible to avoid the reinforcing beam from interfering with the bending of the main beam.
- the reinforcing beam may have a shape that is convexly bent upward. In this case, when the reinforcing beam is deformed due to overturning, the reinforcing beam is bent upward. Thereby, a part of energy of the deformation which a cab receives can be absorbed. Further, it is possible to prevent the bending of the reinforcing beam from reaching the space occupied by the operator in the cab.
- the bottom surface of the reinforcing beam may have a notch recessed upward. In this case, when the reinforcing beam is deformed due to overturning, the reinforcing beam is bent upward. Thereby, a part of energy of the deformation which a cab receives can be absorbed. Further, it is possible to prevent the bending of the reinforcing beam from reaching the space occupied by the operator in the cab.
- the reinforcing beam may be a plate-like member.
- the reinforcement beam can be easily manufactured. Further, the change in the appearance of the cab due to the addition of the reinforcing beam can be suppressed to a small level.
- the reinforcing beam may have an opening penetrating in the vertical direction.
- the reinforcing beam can be reduced in weight. Therefore, an increase in the weight of the cab due to the addition of the reinforcing beam can be suppressed.
- the reinforcing beam may have a left side, a right side, and a central portion located between the left side and the right side in the left-right direction.
- the front and rear dimensions of the reinforcing beam may decrease from the left side and the right side toward the center.
- the reinforcing beam is easily bent with the central portion as the apex. Thereby, a part of energy of the deformation which a cab receives can be absorbed.
- the reinforcing beam may have a left opening and a right opening penetrating in the vertical direction.
- the left opening may be located between the left side and the center.
- the right opening may be located between the right side and the center.
- the reinforcing beam can be reduced in weight. Therefore, an increase in the weight of the cab due to the addition of the reinforcing beam can be suppressed.
- the upper left frame and the upper right frame may include a mounting portion having a bolt hole.
- the reinforcing beam may be attached to the attachment portion by a bolt. In this case, the reinforcing beam can be easily attached.
- the main frame may further include a main beam attached to the upper left frame and the upper right frame.
- the main beam may have a first bending guiding portion that guides a bending portion and a bending direction when a load is applied to the cab from the left and right directions.
- the reinforcing beam may include a second bending guiding portion that guides a bending portion and a bending direction when a load is applied to the cab from the left and right directions.
- the reinforcing beam may be arranged at a position that does not overlap the main beam in plan view.
- the first bending guiding portion by guiding the bending portion and the bending direction of the main beam by the first bending guiding portion, it is possible to prevent the cab from being deformed when the vehicle falls over in the space occupied by the operator in the cab. Further, since the reinforcing beam does not overlap the main beam in a plan view of the cab, it is possible to prevent the reinforcing beam from interfering with the bending of the main beam. Further, by guiding the bending portion and the bending direction of the reinforcing beam by the second bending guiding portion, it is possible to prevent the reinforcing beam from interfering with the bending of the main beam.
- the bending direction of the second bending guide portion may be upward. In this case, it is possible to prevent the bending of the reinforcing beam from reaching the space occupied by the operator in the cab.
- the bent part of the second bending guide part may be the central part in the left-right direction of the reinforcing beam.
- the reinforcing beam is easily bent with the central portion as the apex. Thereby, a part of energy of the deformation which a cab receives can be absorbed.
- the second bending guide portion may be a notch that extends in the front-rear direction and is recessed upward in the bottom surface of the central portion in the left-right direction of the reinforcing beam.
- the bending portion of the reinforcing beam can be guided to the center portion and the bending direction can be guided upward by the notch. Further, it is easy to form the second bending guide part.
- a method for manufacturing a cab for a work vehicle according to another aspect of the present invention includes a step of attaching a reinforcing beam to a standard frame according to the weight of the work vehicle.
- the standard frame has a main frame and a roof plate.
- the main frame includes an upper left frame and an upper right frame extending in the front-rear direction.
- the upper left frame and the upper right frame are spaced apart from each other in the left-right direction.
- the roof plate is provided on the top surface of the main frame.
- the roof plate is attached to the upper left frame and the upper right frame.
- the reinforcing beam is disposed above the roof plate and attached to the upper left frame and the upper right frame.
- the strength of the standard frame can be improved by attaching the reinforcing beam to the upper left frame and the upper right frame of the standard frame.
- the strength of the cab can be adjusted according to the weight of the work vehicle.
- the reinforcing beam is disposed above the roof plate of the standard frame. Therefore, the reinforcing beam can be easily retrofitted to the standard frame. Therefore, it is possible to attach the reinforcing beam according to the weight of the work vehicle while sharing the standard frame.
- strength according to the weight of the work vehicle can be manufactured easily, and productivity can be improved.
- FIG. 1 is a perspective view of a work vehicle according to an embodiment. It is a perspective view of a cab. It is a top view of a cab. It is a perspective view of a 3rd upper main beam. It is a figure which shows the aspect of a deformation
- FIG. 1 is a perspective view of a work vehicle 1 according to the embodiment.
- the work vehicle 1 is a hydraulic excavator.
- the work vehicle 1 includes a vehicle body 2 and a work implement 3.
- the vehicle body 2 includes a traveling body 4 and a turning body 5.
- the traveling body 4 has crawler belts 4a and 4b.
- the work vehicle 1 travels by driving the crawler belts 4a and 4b.
- the turning body 5 is placed on the traveling body 4.
- the swivel body 5 is provided so as to be able to swivel with respect to the traveling body 4.
- the revolving body 5 is provided with a cab 6.
- the cab 6 will be described later.
- the front / rear, left / right, and upper / lower directions mean the front / rear, left / right, and upper / lower directions viewed from the operator seated on the cab 6.
- the revolving unit 5 has an engine room 7 and a counterweight 8.
- the engine chamber 7 houses devices such as an engine and a hydraulic pump (not shown).
- the engine compartment 7 is disposed behind the cab 6.
- the counterweight 8 is disposed behind the engine chamber 7.
- the work machine 3 is attached to the revolving unit 5.
- the work machine 3 is disposed on the side of the cab 6.
- the work machine 3 includes a boom 11, an arm 12, and a work machine attachment 13.
- the work machine 3 includes a boom cylinder 14, an arm cylinder 15, and an attachment cylinder 16.
- the base end of the boom 11 is rotatably connected to the revolving unit 5.
- the tip of the boom 11 is rotatably connected to the base end of the arm 12.
- the distal end portion of the arm 12 is rotatably connected to the work machine attachment 13.
- the work machine attachment 13 is a bucket.
- the work implement attachment 13 is not limited to a bucket, and may be replaced with another work implement attachment.
- the boom cylinder 14, the arm cylinder 15, and the attachment cylinder 16 are hydraulic cylinders and are driven by hydraulic oil.
- the hydraulic oil is discharged from a hydraulic pump (not shown).
- the boom cylinder 14 operates the boom 11.
- the arm cylinder 15 operates the arm 12.
- the attachment cylinder 16 operates the work implement attachment 13.
- the work implement 3 is driven by driving these cylinders 14-16.
- FIG. 2 is a perspective view of the cab 6.
- FIG. 3 is a top view of the cab 6.
- the cab 6 includes a standard frame 21 and a reinforcing beam 22.
- Standard frame 21 has a main frame 23 and a plurality of plate members 41-44.
- the main frame 23 has a left frame portion 24, a right frame portion 25, a plurality of main beams 26-28, and a floor frame 29.
- the left frame portion 24 and the right frame portion 25 are arranged apart from each other in the left-right direction.
- the left frame portion 24 includes a left front pillar 31, a left rear pillar 32, a left middle pillar 33, and an upper left frame 34.
- the left front pillar 31, the left rear pillar 32, and the left intermediate pillar 33 are erected on the floor frame 29.
- the left front pillar 31 extends in the vertical direction.
- the left rear pillar 32 extends in the up-down direction and is arranged behind the left front pillar 31.
- the left intermediate pillar 33 extends in the vertical direction and is disposed between the left front pillar 31 and the left rear pillar 32 in the front-rear direction.
- the upper left frame 34 extends in the front-rear direction.
- the upper left frame 34 extends rearward from the upper part of the left front pillar 31.
- the upper left frame 34 is connected to the upper part of the left front pillar 31 and the upper part of the left rear pillar 32.
- the upper part of the left middle pillar 33 is connected to the left front pillar 31.
- the right frame part 25 includes a right front pillar 35, a right rear pillar 36, and an upper right frame 37.
- the right front pillar 35 and the right rear pillar 36 are erected on the floor frame 29.
- the right front pillar 35 extends in the vertical direction.
- the right rear pillar 36 extends in the vertical direction and is disposed rearward of the right front pillar 35.
- the upper right frame 37 extends in the front-rear direction.
- the upper right frame 37 extends rearward from the upper part of the right front pillar 35.
- the upper right frame 37 is connected to the upper part of the right front pillar 35 and the upper part of the right rear pillar 36.
- the left front pillar 31 and the upper left frame 34 are integrally formed.
- the right front pillar 35 and the upper right frame 37 are integrally formed.
- the left front pillar 31 and the upper left frame 34 may be separate from each other and may be joined to each other by welding or the like.
- the right front pillar 35 and the upper right frame 37 may be separate from each other and may be joined to each other by welding or the like.
- the plurality of main beams 26-28 extend in the left-right direction and connect the left frame portion 24 and the right frame portion 25.
- the plurality of main beams 26-28 are welded to the left frame portion 24 and the right frame portion 25, for example.
- the plurality of main beams 26-28 include a first upper main beam 26, a second upper main beam 27, and a third upper main beam 28.
- the first upper main beam 26, the second upper main beam 27, and the third upper main beam 28 are arranged on the top surface of the main frame 23.
- the first upper main beam 26, the second upper main beam 27, and the third upper main beam 28 are arranged away from each other in the front-rear direction.
- the second upper main beam 27 is disposed behind the first upper main beam 26.
- the third upper main beam 28 is disposed between the first upper main beam 26 and the second upper main beam 27 in the front-rear direction.
- the third upper main beam 28 is connected to the upper left frame 34 and the upper right frame 37.
- the third upper main beam 28 is welded to the upper left frame 34 and the upper right frame 37.
- the third upper main beam 28 is disposed immediately above the driver seat disposed in the cab 6.
- the plurality of plate members 41-44 are attached to the main frame 23.
- the plurality of plate members 41-44 include a left side plate 41, a right side plate 42, a back plate 43, and a roof plate 44.
- the left side plate 41 is provided on the left side surface of the main frame 23.
- the left side plate 41 is attached across the left intermediate pillar 33 and the left rear pillar 32. Between the left intermediate pillar 33 and the left front pillar 31, a door 45 (see FIG. 1) that is opened and closed for an operator to get on and off the cab 6 is disposed.
- the right side plate 42 is provided on the right side surface of the main frame 23.
- the right side plate 42 is attached across the right front pillar 35 and the right rear pillar 36.
- the back plate 43 is provided on the back surface of the main frame 23.
- the back plate 43 is attached across the left rear pillar 32 and the right rear pillar 36.
- the roof plate 44 is provided on the top surface of the main frame 23.
- the roof plate 44 is attached over the upper left frame 34 and the upper right frame 37.
- the roof plate 44 is attached across the first upper main beam 26 and the second upper main beam 27.
- the third upper main beam 28 is disposed below the roof plate 44. That is, the third upper main beam 28 overlaps the roof plate 44 in plan view.
- the roof plate 44 has an opening 440.
- a skylight is attached to the opening 440.
- the opening 440 is located in front of the third upper main beam 28.
- the opening 440 is located between the first upper main beam 26 and the third upper main beam 28 in plan view.
- the opening 440 does not overlap the third upper main beam 28 in plan view.
- FIG. 4 is a perspective view of the third upper main beam 28.
- the third upper main beam 28 is formed of a plate-like member bent in the vertical direction. The rear part of the third upper main beam 28 is bent downward.
- the third upper main beam 28 has a first horizontal plate portion 46, a second horizontal plate portion 47, and a vertical plate portion 48.
- the first horizontal plate portion 46 and the second horizontal plate portion 47 extend in the front-rear direction.
- the first horizontal plate portion 46 has a recess 460 that is recessed rearward.
- the recess 460 has a shape along the opening 440 of the roof plate 44 described above.
- the front portion of the first horizontal plate portion 46 is bent downward.
- the second horizontal plate portion 47 is located behind the first horizontal plate portion 46.
- the second horizontal plate portion 47 is located above the first horizontal plate portion 46. Therefore, a step portion is provided between the second horizontal plate portion 47 and the first horizontal plate portion 46.
- the vertical plate portion 48 extends downward from the rear end of the second horizontal plate portion 47.
- a plurality of bending guide portions (first bending guide portions) 481 and 482 are provided at the lower end of the rear portion of the third upper main beam 28. That is, the plurality of bending guide portions 481 and 482 are provided at the lower end of the vertical plate portion 48.
- the plurality of bending guiding portions 481 and 482 guide the bending portion and the bending direction of the third upper main beam 28 when a load is applied to the third upper main beam 28.
- the plurality of bending guide portions 481 and 482 are notches having a shape recessed upward.
- Each of the plurality of bending guide portions 481 and 482 has an arc shape.
- the plurality of bending guiding portions 481 and 482 include a bending guiding portion 481 and a bending guiding portion 482.
- the bending guide part 481 and the bending guide part 482 are arranged apart from each other in the left-right direction.
- the bending guiding portion 481 and the bending guiding portion 482 are disposed on the left and right of the central portion of the third upper main beam 28 in the left-right direction.
- the bending guiding portions 481 and 482 are separated from the center in the left-right direction (longitudinal direction) of the third upper main beam 28.
- the plurality of bending guide portions 481 and 482 are provided so as to guide the deformation of the third upper main beam 28, and the deformed third upper main beam 28 is in a space S1 that is assumed to be occupied when the operator is seated. It is provided so as not to interfere.
- the reinforcing beam 22 is separate from the standard frame 21 and is attached to the standard frame 21.
- the reinforcing beam 22 is separate from the roof plate 44.
- the reinforcing beam 22 is attached to the upper left frame 34 and the upper right frame 37.
- the reinforcing beam 22 is disposed above the roof plate 44.
- the reinforcing beam 22 overlaps the roof plate 44 in plan view.
- the reinforcing beam 22 overlaps the upper left frame 34 and the upper right frame 37 in plan view.
- the reinforcing beam 22 is disposed between the second upper main beam 27 and the third upper main beam 28 in the front-rear direction. That is, the reinforcing beam 22 is disposed behind the third upper main beam 28, and the reinforcing beam 22 does not overlap the third upper main beam 28 in a plan view of the cab 6.
- the reinforcing beam 22 is disposed in front of the second upper main beam 27, and the reinforcing beam 22 does not overlap the second upper main beam 27 in a plan view of the cab 6.
- FIG. 6 is a top view of the reinforcing beam 22.
- FIG. 7 is a front view of the reinforcing beam 22.
- FIG. 8 is a front view of the upper portion of the cab 6.
- the reinforcing beam 22 is a thin plate member.
- the reinforcing beam 22 has a symmetrical shape.
- the reinforcing beam 22 has a left side portion 51, a right side portion 52, and a central portion 53.
- the center part 53 is located between the left side part 51 and the right side part 52 in the left-right direction.
- the front and rear dimensions of the reinforcing beam 22 decrease from the left side 51 toward the center 53.
- the front and rear dimensions of the reinforcing beam 22 decrease from the right side portion 52 toward the central portion 53.
- the reinforcing beam 22 includes a left front inclined portion 54 and a right front inclined portion 55.
- the left front inclined portion 54 connects the front portion of the left side portion 51 and the front portion of the central portion 53.
- the left front inclined portion 54 is inclined rearward toward the central portion 53.
- the right front inclined portion 55 connects the front portion of the right side portion 52 and the front portion of the central portion 53.
- the right front inclined portion 55 is inclined rearward toward the central portion 53.
- the reinforcing beam 22 includes a left rear inclined portion 56 and a right rear inclined portion 57.
- the left rear inclined portion 56 connects the rear portion of the left side portion 51 and the rear portion of the central portion 53.
- the left rear inclined portion 56 is inclined forward toward the central portion 53.
- the right rear inclined portion 57 connects the rear portion of the right side portion 52 and the rear portion of the central portion 53.
- the right rear inclined portion 57 is inclined forward toward the central portion 53.
- the left side portion 51 has a left front corner portion 511 and a left rear corner portion 512.
- the left front corner 511 and the left rear corner 512 are formed in a curved shape.
- the right side portion 52 has a right front corner portion 521 and a right rear corner portion 522.
- the right front corner 521 and the right rear corner 522 are formed in a curved shape.
- the central portion 53 has a front edge 531 and a rear edge 532.
- the front edge 531 of the central portion 53 is formed in a curved shape.
- the front edge 531 of the central portion 53 has a shape that is convexly curved rearward.
- the rear edge 532 of the central portion 53 is formed in a curved shape.
- the rear edge 532 of the central portion 53 has a shape that is curved forward and convex.
- the reinforcing beam 22 has a left opening 58 and a right opening 59.
- the left opening 58 is located between the left side portion 51 and the central portion 53 and penetrates in the vertical direction.
- the left opening 58 is located between the left front inclined portion 54 and the left rear inclined portion 56.
- the right opening 59 is located between the right side portion 52 and the central portion 53 and penetrates in the vertical direction.
- the right opening 59 is located between the right front inclined portion 55 and the right rear inclined portion 57.
- the left opening 58 and the right opening 59 each have a substantially triangular shape. However, the corners of the left opening 58 and the right opening 59 are formed in a curved shape.
- the reinforcing beam 22 has a shape bent upwards, and the reinforcing beam 22 has a shape bent upwards with the center in the left-right direction as a vertex.
- the bottom surface of the reinforcing beam 22 has a notch 61 that is recessed upward at the center in the left-right direction.
- the notch 61 extends in the front-rear direction.
- the notch 61 is provided so that the reinforcing beam 22 is deformed convex upward when a large lateral load P is applied to the upper portion of the cab 6 as described above.
- reference numeral 22 'de notes the enhanced beam 22 after deformation.
- the bent portion of the reinforcing beam 22 is guided to the central portion 53 by the shape of the central portion 53 and the notch 61 described above, and the bending direction is upward. Be guided to.
- the bending portion and the portion that guides the bending direction of the reinforcing beam 22 are the second bending guide portion. Accordingly, the central portion 53 and the notch 61 correspond to a second bending guide portion.
- the standard frame 21 has a plurality of mounting portions 62-65 for mounting the reinforcing beam 22.
- the plurality of attachment portions 62-65 are provided on the upper left frame 34 and the upper right frame 37.
- the plurality of attachment portions 62-65 include a first left attachment portion 62, a second left attachment portion 63, a first right attachment portion 64, and a second right attachment portion 65.
- the first left mounting portion 62 and the second left mounting portion 63 are provided on the upper left frame 34.
- the first left attachment portion 62 and the second left attachment portion 63 are arranged side by side in the front-rear direction.
- the second left attachment portion 63 is disposed behind the first left attachment portion 62.
- the first right attachment portion 64 and the second right attachment portion 65 are provided on the upper right frame 37.
- the first right attachment portion 64 and the second right attachment portion 65 are arranged side by side in the front-rear direction.
- the second right attachment portion 65 is disposed behind the first right attachment portion 64.
- the reinforcing beam 22 has a plurality of boss portions 66-69.
- the plurality of boss portions 66-69 are arranged corresponding to the plurality of attachment portions 62-65 of the standard frame 21.
- the plurality of boss portions 66-69 have a first left boss portion 66, a second left boss portion 67, a first right boss portion 68, and a second right boss portion 69.
- the first left boss 66 is provided at the left front corner 511.
- the first left boss portion 66 is attached to the first left attachment portion 62.
- the second left boss portion 67 is provided at the left rear corner portion 512.
- the second left boss portion 67 is attached to the second left attachment portion 63.
- the first right boss portion 68 is provided at the right front corner portion 521.
- the first right boss portion 68 is attached to the first right attachment portion 64.
- the second right boss 69 is provided at the right rear corner 522.
- the second right boss portion 69 is attached to the second right attachment portion 65.
- FIG. 9 is a cross-sectional view of the first left mounting portion 62, the first left boss portion 66, and the upper left frame 34.
- the first left attachment portion 62 is attached to the upper left frame 34.
- the first left mounting portion 62 is inserted into an opening 340 provided on the upper surface of the upper left frame 34, and the lower portion of the first left mounting portion 62 is disposed inside the upper left frame 34.
- the upper portion of the first left mounting portion 62 is disposed on the upper surface of the upper left frame 34.
- the first left attachment portion 62 has a bolt hole 620.
- the bolt hole 620 extends in the up-down direction and opens on the upper surface of the first left mounting portion 62.
- the first left boss 66 protrudes up and down from the left side 51.
- the first left boss portion 66 has a through hole 660.
- the through hole 660 penetrates the first left boss portion 66 in the vertical direction.
- the through hole 660 of the first left boss portion 66 is disposed at a position corresponding to the bolt hole 620 of the first left mounting portion 62.
- the bolt 71 is passed through the through hole 660 of the first left boss portion 66 and the bolt hole 620 of the first left attachment portion 62, whereby the first left boss portion 66 is attached to the first left attachment portion 62.
- the structures of the second left mounting portion 63, the first right mounting portion 64, and the second right mounting portion 65 are the same as those of the first left mounting portion 62, respectively.
- the structures of the second left boss portion 67, the first right boss portion 68, and the second right boss portion 69 are the same as those of the first left boss portion 66, respectively.
- the second left boss portion 67 is attached to the second left attachment portion 63 by a bolt 72.
- the first right boss portion 68 is attached to the first right attachment portion 64 by a bolt 73.
- the second right boss portion 69 is attached to the second right attachment portion 65 with a bolt 74.
- the reinforcing beam 22 is fixed to the first to fourth attachment portions 62-65 by the bolts 71-74.
- the cab 6 according to this embodiment described above is manufactured as follows.
- the standard frame 21 is manufactured.
- the upper left frame 34 and the upper right frame 37 are formed by bending the tubular member or fixing the plurality of tubular members to each other.
- the main frame 23 is formed by fixing a plurality of main beams 26 to 28 to the upper left frame 34 and the upper right frame 37.
- the standard frame 21 is formed by fixing the plurality of plate members 41 to 44 to the main frame 23. These frames, beams, and plate members are fixed by, for example, welding, but may be fixed by other fixing means such as bolts.
- the reinforcing beam 22 is attached to the standard frame 21.
- the reinforcing beam 22 is disposed above the roof plate 44 and attached to the upper left frame 34 and the upper right frame 37.
- a plurality of types of reinforcing beams 22 having different intensities may be prepared, and the reinforcing beams 22 may be selected according to the weight of the work vehicle 1 on which the cab 6 is mounted. Further, the presence or absence of the reinforcing beam 22 may be selected according to the weight of the work vehicle 1 on which the cab 6 is mounted.
- FIG. 10 is a flowchart showing an example of a method for manufacturing the work vehicle 1. It is determined whether or not the weight W of the work vehicle 1 on which the cab 6 is mounted exceeds the first weight W1 (S1).
- the first weight W1 is a weight with which the cab provided with the standard frame 21 without the reinforcing beam can sufficiently exhibit the protection function during the fall. If the weight W is equal to or less than the first weight W1, the reinforcing beam is not attached to the cab 6 (S2).
- the second weight W2 is greater than the first weight W1.
- the second weight W2 is a weight by which the cab in which the reinforced beam A is attached to the standard frame 21 can sufficiently exhibit the protection function when it falls. If the weight W is less than or equal to the second weight W2, the reinforcing beam A is attached to the cab 6 (S4). When the weight W is larger than the first weight W2, the reinforcing beam B is attached to the cab 6 (S5). The reinforcing beam B has a higher intensity than the reinforcing beam A. For example, a cab in which the reinforced beam B is attached to the standard frame 21 can sufficiently exhibit a fall protection function at the maximum weight possible for the work vehicle 1.
- the attachment of the reinforcing beam 22 to the standard frame 21 may be performed after the standard frame 21 is attached to the vehicle body 2. Further, the reinforcing beam 22 may be attached to the standard frame 21 at a location different from the manufacturing location of the standard frame 21. For example, after the work vehicle 1 on which the standard frame 21 is mounted is shipped from the manufacturing site of the work vehicle 1, the reinforcing beam 22 may be attached according to the work implement attachment attached to the work vehicle 1.
- the cab 6 of the work vehicle 1 according to the present embodiment described above has the following characteristics.
- the strength of the standard frame 21 can be improved by attaching the reinforcing beam 22 to the upper left frame 34 and the upper right frame 37 of the standard frame 21. Thereby, the strength of the cab 6 can be adjusted according to the weight of the work vehicle 1. Further, the reinforcing beam 22 is disposed above the roof plate 44 of the standard frame 21. Therefore, the reinforcing beam 22 can be easily attached to the standard frame 21. Therefore, the reinforcing beam 22 can be attached according to the weight of the work vehicle 1 while using the standard frame 21 in common. Thereby, the cab 6 provided with the intensity
- Bending guide portions 481 and 482 are provided on the third upper main beam 28. Therefore, the bending portion and the bending direction of the third upper main beam 28 are guided by the bending guiding portions 481 and 482, thereby preventing the cab 6 from being deformed during the fall in the space S1 occupied by the operator in the cab 6. it can. Further, the reinforcing beam 22 does not overlap the third upper main beam 28 in the plan view of the cab 6. Therefore, it is possible to prevent the reinforcing beam 22 from interfering with the bending of the third upper main beam 28 when the third upper main beam 28 is deformed.
- the reinforcing beam 22 Due to the shape of the reinforcing beam 22 as described above, the reinforcing beam 22 is easily bent upward and convex. For this reason, when the reinforcing beam 22 is deformed due to overturning, the reinforcing beam 22 bends upward. Thereby, a part of energy of the deformation which the cab 6 receives can be absorbed. Further, it is possible to prevent the bending of the reinforcing beam 22 from reaching the space S1 occupied by the operator in the cab 6.
- the reinforcing beam 22 is a plate-like member. Therefore, the reinforcement beam 22 can be easily manufactured. Further, the change in the appearance of the cab 6 due to the addition of the reinforcing beam 22 can be reduced.
- the reinforcing beam 22 has a left opening 58 and a right opening 59 penetrating in the vertical direction. Thereby, the reinforcing beam 22 can be reduced in weight. Therefore, an increase in the weight of the cab 6 due to the addition of the reinforcing beam 22 can be suppressed.
- the reinforcing beam 22 is attached to the attachment portions 62-65 of the standard frame 21 by bolts 71-74. For this reason, the reinforcement beam 22 can be easily attached.
- the working vehicle is not limited to a hydraulic excavator, but may be another type of vehicle such as a bulldozer or a wheel loader.
- the structure of the standard frame 21 is not limited to that of the above embodiment, and may be changed.
- the shape or arrangement of the reinforcing beam 22 is not limited to that of the above embodiment, and may be changed.
- the reinforcing beam 22 may be arranged so as to overlap the third upper main beam 28.
- the reinforcing beam 22 may have a rectangular shape in plan view.
- the opening of the reinforcing beam 22 may be omitted.
- the means for attaching the reinforcing beam 22 to the standard frame 21 is not limited to the bolts 71-74 as in the above embodiment, and may be changed.
- the reinforcing beam 22 may be welded to the standard frame 21.
- the reinforcing beam 22 has a shape bent upwards.
- the reinforcing beam 22 may have a curved shape that is smoothly curved.
- the first bend guiding part and the second bend guiding part are not limited to notches.
- the first bending guiding portion and the second bending guiding portion may be portions that are lower in strength than other portions so as to guide the bending portion and the bending direction, or It may be a portion where stress during deformation is easily concentrated.
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Abstract
Description
37 右上フレーム
23 メインフレーム
44 ルーフプレート
21 標準フレーム
22 強化ビーム
6 キャブ
28 メインビーム
481,482 第1の屈曲誘導部
61 切り欠き(第2の屈曲誘導部)
51 左側部
52 右側部
53 中央部
58 左開口
59 右開口
62-65 取付部
Claims (17)
- 互いに左右方向に離れて配置され前後方向に延びる左上フレーム及び右上フレームを含むメインフレームと、前記左上フレーム及び前記右上フレームに取り付けられ前記メインフレームの天面に設けられるルーフプレートと、を有する標準フレームと、
前記ルーフプレートの上方に配置され、前記左上フレームと前記右上フレームとに取り付けられ、上方に凸の形状を有する強化ビームと、
を備える作業車両のキャブ。 - 前記メインフレームは、前記左上フレームと前記右上フレームとに取り付けられるメインビームをさらに含み、
前記メインビームは、前記ルーフプレートの下方に配置される、
請求項1に記載の作業車両のキャブ。 - 前記メインビームは、前記メインビームに負荷が掛かったときの前記メインビームの屈曲方向を誘導する屈曲誘導部を有する、
請求項2に記載の作業車両のキャブ。 - 前記キャブの平面視において、前記強化ビームは、前記メインビームに重ならない、
請求項2又は3に記載の作業車両のキャブ。 - 前記強化ビームは、前記メインビームよりも後方に配置される、
請求項4に記載の作業車両のキャブ。 - 前記強化ビームは、上方に凸に屈曲した形状を有する、
請求項1から5のいずれかに記載の作業車両のキャブ。 - 前記強化ビームの底面は、上方に向かって凹んだ切り欠きを有する、
請求項1から6のいずれかに記載の作業車両のキャブ。 - 前記強化ビームは、板状の部材である、
請求項1から7のいずれかに記載の作業車両のキャブ。 - 前記強化ビームは、上下方向に貫通する開口を有する、
請求項1から8のいずれかに記載の作業車両のキャブ。 - 前記強化ビームは、左側部と、右側部と、左右方向において前記左側部と前記右側部との間に位置する中央部と、を有し、
前記強化ビームの前後の寸法は、前記左側部及び前記右側部から前記中央部に向かって小さくなる、
請求項1から9のいずれかに記載の作業車両のキャブ。 - 前記強化ビームは、
前記左側部と前記中央部との間に位置し、上下方向に貫通する左開口と、
前記右側部と前記中央部との間に位置し、上下方向に貫通する右開口と、
を有する、
請求項10に記載の作業車両のキャブ。 - 前記左上フレームと前記右上フレームとは、ボルト孔を有する取付部を有し、
前記強化ビームは、ボルトによって前記取付部に取り付けられる。
請求項1から11のいずれかに記載の作業車両のキャブ。 - 前記メインフレームは、前記左上フレームと前記右上フレームとに取り付けられるメインビームをさらに含み、
前記メインビームは、前記キャブに左右方向から負荷が掛かったときの屈曲部位と屈曲方向とを誘導する第1の屈曲誘導部を有し、
前記強化ビームは、前記キャブに左右方向から負荷が掛かったときの屈曲部位と屈曲方向とを誘導する第2の屈曲誘導部を有し、前記メインビームと平面視で重ならない位置に配置される、
請求項1に記載の作業車両のキャブ。 - 前記第2の屈曲誘導部の前記屈曲方向は上方である、
請求項13に記載の作業車両のキャブ。 - 前記第2の屈曲誘導部の前記屈曲部位は前記強化ビームの左右方向における中央部である、
請求項13に記載の作業車両のキャブ。 - 前記第2の屈曲誘導部は、前記強化ビームの左右方向における中央部の底面において前後方向に延び上方に向かって凹んだ切り欠きである、
請求項13に記載の作業機械のキャブ。 - 互いに左右方向に離れて配置され前後方向に延びる左上フレーム及び右上フレームを含むメインフレームと、前記左上フレーム及び前記右上フレームに取り付けられ、前記メインフレームの天面に設けられるルーフプレートと、有する標準フレームにおいて、
作業車両の重量に応じて、前記ルーフプレートの上方に強化ビームを配置し、前記左上フレーム及び前記右上フレームに前記強化ビームを取り付ける工程を備える作業車両のキャブの製造方法。
Priority Applications (6)
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US14/895,263 US9663920B2 (en) | 2015-07-01 | 2015-07-01 | Cab for work vehicle and a method of manufacturing same |
PCT/JP2015/069050 WO2015174552A1 (ja) | 2015-07-01 | 2015-07-01 | 作業車両のキャブ及びその製造方法 |
JP2015542106A JP5996122B2 (ja) | 2015-07-01 | 2015-07-01 | 作業車両のキャブ及びその製造方法 |
KR1020157033087A KR101717059B1 (ko) | 2015-07-01 | 2015-07-01 | 작업 차량의 캡 및 그 제조 방법 |
CN201580000846.8A CN105339245B (zh) | 2015-07-01 | 2015-07-01 | 作业车辆的驾驶室及其制造方法 |
DE112015000096.8T DE112015000096B4 (de) | 2015-07-01 | 2015-07-01 | Kabine für ein Arbeitsfahrzeug und Verfahren für deren Herstellung |
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PCT/JP2015/069050 WO2015174552A1 (ja) | 2015-07-01 | 2015-07-01 | 作業車両のキャブ及びその製造方法 |
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JP (1) | JP5996122B2 (ja) |
KR (1) | KR101717059B1 (ja) |
CN (1) | CN105339245B (ja) |
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WO2017014325A1 (ja) * | 2016-09-09 | 2017-01-26 | 株式会社小松製作所 | ブルドーザ |
DE102018101531A1 (de) * | 2018-01-24 | 2019-07-25 | Jungheinrich Aktiengesellschaft | Fahrerkabine für ein Flurförderzeug |
JP7195105B2 (ja) * | 2018-10-09 | 2022-12-23 | 株式会社小松製作所 | キャブ及び作業機械 |
CN114981377A (zh) | 2020-01-21 | 2022-08-30 | Dic株式会社 | 粘合带 |
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- 2015-07-01 KR KR1020157033087A patent/KR101717059B1/ko active IP Right Grant
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CN105339245A (zh) | 2016-02-17 |
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US9663920B2 (en) | 2017-05-30 |
JPWO2015174552A1 (ja) | 2017-04-20 |
DE112015000096B4 (de) | 2017-12-14 |
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US20170002543A1 (en) | 2017-01-05 |
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