JP2021065147A - Canopy for work machine - Google Patents

Abstract

To provide a canopy for a work machine, the canopy that can be simplified in a configuration as requested.SOLUTION: A canopy for a work machine includes a support frame 40 supported to the work machine in a cantilever manner, and a roof material 41 placed and supported on an upper side of the support frame 40. The support frame 40 has a transverse member 42 positioned in a base end side place of the support frame 40 and extended in a transverse direction, and left and right longitudinal members 43 extending toward the free end side of the support frame 40 from left/right both ends of the traverse member 42. The support frame is configured in a substantially U-shaped or substantially H-shaped manner by the traverse member 42 and the left and right longitudinal members 43 in plan view.SELECTED DRAWING: Figure 4

Description

The present invention relates to, for example, a canopy for a working machine used for a working machine such as a combine.

A conventional canopy for a work machine is provided with a roof portion (roof material) located above the operation unit, and this roof portion is supported by a roof frame (support frame) that is cantilevered by the work machine. It is composed. The roof frame was formed by bending a round pipe material into a substantially loop shape in a plan view, and the rear ends on both the left and right sides were connected to the left and right columns erected from the work machine. To add an explanation, the roof frame has a left and right lateral side portion in which the rear end portion is connected to the left and right columns and extends linearly in the front-rear direction, and a front end portion connecting the front portions of the lateral side portions. However, they are configured in a loop shape in which they are connected in a series (see, for example, Patent Document 1).

JP-A-2017-108692

In the above-mentioned conventional configuration, the roof frame is configured in a loop shape in a series, and is provided with a front end portion extending in the lateral direction at a portion farthest from the base end side portion supported by the support to the free end side. There is. As a result, the weight of the entire frame extending in a cantilever shape becomes large, and a member with a large plate thickness is used to increase the rigidity, or a large member with high rigidity is used to secure support strength at the connection point with the support column. There is a disadvantage that the configuration becomes complicated, such as using.

Therefore, there has been a demand for a canopy for a work machine that can simplify the configuration.

The characteristic configuration of the canopy for a work machine according to the present invention includes a support frame that is cantilevered and supported by the work machine, and a roofing material that is placed and supported on the upper side of the support frame. Has a horizontal member located at a base end side portion of the support frame and extending in the lateral direction, and left and right vertical members extending from the left and right ends of the horizontal member toward the free end side of the support frame. Moreover, the horizontal member and the left and right vertical members are formed in a substantially U-shape or a substantially H-shape in a plan view.

According to the present invention, in the support frame, the horizontal member is located at the base end side, only the vertical member extends in a cantilever shape, and a heavy member exists on the free end side of the vertical member. do not. As a result, the load applied to the base end portion of the vertical member in a cantilever shape is smaller than that of the conventional configuration, so that it is not necessary to increase the rigidity of the vertical member itself, and a member having a thin plate thickness can be used. Moreover, the rigidity of the connecting portion with respect to the fixed portion on the working machine side may be set lower than that of the conventional configuration, and the support configuration can be simplified.

Therefore, it has become possible to provide a canopy for a working machine capable of simplifying the configuration.

In the present invention, it is preferable that the horizontal member and the left and right vertical members are formed by bending one rod-shaped body into a substantially U-shape.

According to this configuration, since the support frame can be manufactured by bending one rod-shaped body into a substantially U shape, processing is easy and the manufacturing cost can be reduced.

In the present invention, a reinforcing member is provided at a connection point between the horizontal member and each of the left and right vertical members, and the horizontal member is attached to a portion of the horizontal member near the left and right reinforcing members so as to be supported by the working machine. It is preferable that the part is provided.

According to this configuration, the base end portion of the vertical member to which a cantilevered load is applied is reinforced by the reinforcing member, and is attached to the work machine near the reinforced portion, so that there is little risk of deformation and the like, and the stability is stable. The roofing material can be supported in the state.

In the present invention, it is preferable that the bolts penetrating the support frame and the roofing material from below the supporting frame and the nuts mounted from above the roofing material are tightened and fixed.

According to this configuration, when assembling the roofing material, when fastening the bolts and nuts with the roofing material placed on the support frame, or when performing maintenance work such as repair and replacement, the roofing material Since the bolts can be tightened and loosened from the lower side, the work is easy.

In the present invention, it is preferable that a bent portion for reinforcement is formed on the outer peripheral edge of the roofing material over the entire circumference.

According to this configuration, since the bent portion is formed on the roof material over the entire circumference, it is difficult to deform even if the outer peripheral edge portion comes into contact with other objects, and there is little risk of deformation and damage. , Durability can be improved.

In the present invention, the rear end of the roofing material overlaps the rear end of the driver's seat in the driver's seat of the working machine, and the front end of the roofing material overlaps with the control tower provided in front of the driver's seat. It is preferable that the structure overlaps with the above.

According to this configuration, the area where the driver sitting in the driver's seat exists can be covered from above, and the driver can be protected from sunlight, rain, and the like.

It is an overall side view of a combine. It is the whole plan view of the combine. It is a front view of a canopy. It is an exploded perspective view of the canopy. It is a longitudinal side view of the canopy. It is a bottom view of the canopy. FIG. 6 is a sectional view taken along line VII-VII of FIG. It is a vertical sectional side view of a support column holding part. It is a perspective view of the support column holding part.

Hereinafter, an embodiment of the canopy for a working machine according to the present invention will be described with reference to a case where it is applied to an ordinary combine as an example of a working vehicle.

In this embodiment, the direction indicated by the reference numeral (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by the reference numeral (B) in FIGS. The direction indicated by the reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by the reference numeral (R) in FIG. 2 is the right side of the aircraft.

[Aerial work platform configuration]
FIG. 1 shows a normal combine. The traveling body of this combine is provided with a body frame 1 and a crawler traveling device 2. In front of the traveling machine, a cutting section 3 for harvesting planted culms in the field is provided. In the cutting section 3, a scraping reel 4 for scraping the planted culms, a cutting blade 5 for cutting the planted culms, and an auger for laterally feeding the harvested culms in the cutting width direction, gathering them, and sending them backward. 6 and are provided.

A driving unit 7 is provided behind the cutting unit 3. The upper part of the driving unit 7 is covered with a canopy 8. A grain tank 9 for storing grains obtained by threshing is provided behind the driving unit 7. A threshing device 10 for threshing all the culms of the harvested culms is provided side by side with the grain tank 9. A feeder 11 is provided across the cutting unit 3 and the threshing device 10 to transport all the culms of the cut culms toward the threshing device 10. An engine 12 is provided below the driving unit 7.

FIG. 3 shows the operation unit 7 of the combine. The driver unit 7 is provided with a driver's seat 13 on which an operator is seated, and a control tower 14 is provided in front of the driver's seat 13. A front panel 15 is provided on the upper part of the control tower 14. A front and rear side panels 16 are provided on the left lateral side of the driver's seat 13. The front panel 15 is provided with a steering lever 17 for changing the direction of travel of the aircraft, a liquid crystal information display unit 18 for displaying information on the traveling state of the aircraft, and the like. The side panel 16 is provided with a traveling main shifting lever 19, a traveling auxiliary shifting lever 20, a threshing clutch lever 21, a cutting clutch lever 22, and the like.

[Support structure of canopy 8]
Hereinafter, the support structure of the canopy 8 will be described.
As shown in FIG. 1, the canopy 8 is supported by the left and right columns 23 which are formed so as to stand up from the front upper part of the grain tank 9 diagonally forward and upward. As shown in FIGS. 3 and 4, the left and right columns 23 are connected by a connecting member 24 at the upper portion, and are configured to swing integrally. The left and right columns 23 are supported so as to be switchable between an acting posture (see FIG. 1) diagonally forward and upward and a retracted posture (not shown) that swings downward.

The left and right columns 23 are supported by the front wall portion of the grain tank 9. As shown in FIGS. 3 and 9, the upper and lower plates 25 and 26 are bolted to the front wall portion of the grain tank 9. Left and right square tubular vertical members 27 extending in the vertical direction while being welded and fixed to the upper and lower plate bodies 25 and 26 are provided. The upper plate body 25 is provided with left and right support column holding portions 28.

As shown in FIG. 9, the support column holding portion 28 is located between two plate-shaped structures 29 spaced apart from each other in the left-right direction and the two plate-shaped structures 29, and each plate-shaped structure 29 is located between the two plate-shaped structures 29. It is provided with an inclined guide plate 30 and a lower receiving tool 31 connected to the above. A bolt insertion hole 32 is formed in the plate-shaped structure 29. A nut 33 is welded and fixed at a position corresponding to the bolt insertion hole 32 on the inner side of the plate-shaped structure 29 located on the inner side in the left-right direction.

At the lower part of the left and right columns 23, a long hole-shaped bolt insertion hole 35 through which a bolt with a handle 34 is inserted is formed. The locking member 36 is fixed to the upper corner of the lower end of the left and right columns 23.

Of the left and right strut holding portions 28, the right strut holding portion 28 is formed with a pin hole 38 through which a lock pin 37 that can be inserted and removed while inserting the two plate-shaped structures 29 is inserted.

In the operating state, the bolt 34 with a handle moves to the upper end of the bolt insertion hole 35 due to the weight of the canopy 8 and the support column 23. The locking member 36 comes into contact with the inclined guide plate 30, and is received and positioned by the lower receiving tool 31 of the support column 23. In this state, the bolt 34 with a handle is tightened to the nut 33, and the lock pin 37 is inserted to restrict the downward movement and hold the position.

When the bolt 34 with the handle is loosened and the lock pin 37 is removed, the locking member 36 can move upward, the locking member 36 is guided by the inclined guide plate 30, and the bolt 34 with the handle is the support column 23. It moves to the lower end (opposite side) of the bolt insertion hole 35 on the side. As a result, the canopy 8 swings downward together with the support column 23 and switches to the retracted posture.

[Canopy]
Next, the configuration of the canopy 8 will be described.
The canopy 8 is provided with a combine, specifically, a support frame 40 that is cantilevered and supported by the left and right columns 23, and a roofing material 41 that is placed and supported on the upper side of the support frame 40. As shown in FIG. 4, the support frame 40 has a horizontal member 42 located at a position on the base end side of the support frame 40 and extending in the lateral direction, and the left and right ends of the horizontal member 42 toward the free end side of the support frame 40. It has left and right vertical members 43 extending vertically, and is formed in a substantially U shape in a plan view by the horizontal members 42 and the left and right vertical members 43. Specifically, the horizontal member 42 and the left and right vertical members 43 are formed by bending a round pipe material as one rod-shaped body into a substantially U shape.

As shown in FIGS. 4, 5 and 6, reinforcing members 44 are provided at connection points between the horizontal members 42 and the left and right vertical members 43, respectively. Specifically, a reinforcing member 44 made of a horizontal plate is welded and fixed from the lower surface side to a bent portion for forming a horizontal member 42 and a vertical member 43 by bending a round pipe material over approximately 90 degrees. There is. The reinforcing member 44 has a smooth outer edge having an arc shape in a plan view along a curved portion formed in an arc shape.

A mounting portion 46 supported by the combine (left and right columns 23) is provided in a portion of the horizontal member 42 near the left and right reinforcing members 44. As shown in FIGS. 3, 4 and 5, the mounting portion 46 is provided with left and right connecting plates 47 in a vertical orientation at locations located on the left and right inward sides of the left and right reinforcing members 44 in the support frame 40. There is.

The connecting plate 47 is welded and fixed to the lower portion of the outer peripheral portion of the horizontal member 42 and the inner end surface of the reinforcing member 44. The connecting plate 47 is formed with a pin insertion hole 49 through which the fulcrum pin 48 is inserted and a long hole-shaped bolt insertion hole 51 through which the bolt with a handle is inserted.

As shown in FIGS. 4 and 9, support plates 52 fixed and extended toward the front are fixed to the upper front ends of the left and right columns 23. A pin insertion hole 53 through which the fulcrum pin 48 is inserted is formed in the base end portion of the support plate 52 and the support column 23. A bolt insertion hole 54 through which a bolt with a handle 50 is inserted is formed on the free end side of the support plate 52. A nut 55 is welded and fixed to a portion corresponding to the bolt insertion hole 54 on the inner side in the left-right direction of the support plate 52.

The left and right fulcrum pins 48 are provided in a state of being inserted over the pin insertion hole 49 on the connecting plate 47 side and the pin insertion hole 53 on the support column 23 side. The canopy 8 is supported by the support column 23 so as to be vertically swingable around the horizontal axis X by these left and right fulcrum pins 48. The left and right fulcrum pins 48 are prevented from coming off by a retaining tool (not shown) in a state of being inserted through the pin insertion hole 49 on the connecting plate 47 side and the pin insertion hole 53 on the support column 23 side.

Further, the left and right handle bolts 50 are provided in a state of being inserted through the bolt insertion hole 51 on the connecting plate 47 side and the bolt insertion hole 54 on the support plate 52 side. When the bolt 50 with the handle is fastened to the nut 55, the canopy 8 can be fixed in position. When the bolt 50 with a handle is loosened, the canopy 8 can be swung up and down around the horizontal axis X within the range of the elongated hole of the bolt insertion hole 51 on the connecting plate 47 side. Therefore, the canopy 8 can be changed to an arbitrary vertical swing position and fixed at that position.

The roof material 41 is tightened and fixed by bolts 56 that penetrate the support frame 40 and the roof material 41 from the lower side of the support frame 40 and nuts 57 that are mounted from the upper side of the roof material 41. As shown in FIGS. 4 and 5, the roofing material 41 is fixed by bolts 56 penetrating along the vertical direction at two positions separated from each other in the front-rear direction among the left and right vertical members 43 of the support frame 40. The bolt 56 is provided in a state of being inserted from the lower side and penetrating vertically with respect to the vertical member 43 made of a round pipe material. A bolt insertion hole 58 through which the bolt 56 is inserted is formed at a position of the roof material 41 facing the bolt 56. The tip of the bolt 56 projects upward by inserting the vertical member 43 and the roofing material 41. A nut 57 is attached to the tip of a bolt 56 projecting upward via a washer 59.

The roof material 41 is made of a synthetic resin material. As shown in FIG. 5, the roofing material 41 is provided in a bulging shape so that the front-rear central portion is at a high position and the front-rear and both side portions are at a low position in a side view. As shown in FIG. 7, the roofing material 41 has a shape extending substantially flat in the left-right direction when viewed in the front-rear direction. A recess 60 that penetrates downward is formed at a portion through which the bolt 56 is inserted, and is configured so that the amount of outward protrusion of the bolt 56 is reduced.

As shown in FIGS. 6 and 7, the roofing material 41 is formed with a plurality of ridges 61 that project upward in a mountain shape while extending along the front-rear direction. By forming such a ridge portion 61, noise transmitted from the outside to the operation unit 7 is diffusely reflected by the recessed portion 62 formed on the back surface side of the ridge portion 61, and the noise can be reduced.

As shown in FIGS. 5 and 7, a bent portion 63 for reinforcement is formed on the outer peripheral edge of the roofing material 41 over the entire circumference. The bent portion 63 has a shape in which the outer peripheral edge portion of the roofing material 41 is bent outward in a substantially arc shape. By forming such a bent portion 63, it is possible to reinforce the strength, reduce the risk of damage due to contact with an external object, and improve durability.

[Another Embodiment]
(1) In the above embodiment, the support frame 40 is formed by bending one rod-shaped body of the horizontal member 42 and the left and right vertical members 43 into a substantially U shape in a plan view. Instead, the support frame 40 may have the horizontal member 42 and the left and right vertical members 43 formed in a substantially H shape in a plan view using, for example, a plurality of rods.

(2) In the above embodiment, the reinforcing member 44 is provided at the connection point between the horizontal member 42 and the left and right vertical members 43, respectively, but the reinforcing member 44 may not be provided.

(3) In the above embodiment, the bolt 56 penetrating from under the support frame 40 and the nut 57 mounted from above the roof material 41 are used to tighten and fix the roof. It may be configured to be tightened and fixed by a bolt mounted from the upper side of the material 41 and a nut mounted from the bottom of the support frame 40.

(4) In the above embodiment, the reinforcing bent portion 63 is formed on the outer peripheral edge of the roofing material 41 over the entire circumference, but the bent portion 63 may not be formed.

(5) In the above embodiment, the combine is exemplified as the working machine, but the combine may be used not only for the combine but also for other working machines such as rice transplanters, tractors, and construction machines.

The present invention can be applied to a canopy for a work machine used for a work machine such as a combine.

7 Driver's seat 13 Driver's seat 14 Control tower 40 Support frame 41 Roofing material 42 Horizontal member 43 Vertical member 44 Reinforcing member 56 Bolt 57 Nut 63 Bending part

Claims (6)

A support frame that is cantilevered and supported by the work machine and a roofing material that is placed and supported on the upper side of the support frame are provided.
The support frame includes a horizontal member located at a position on the base end side of the support frame and extending in the lateral direction, and left and right vertical members extending from the left and right ends of the horizontal member toward the free end side of the support frame. A canopy for a work machine which is formed by the horizontal member and the left and right vertical members in a substantially U-shape or a substantially H-shape in a plan view. The work machine canopy according to claim 1, wherein the horizontal member and the left and right vertical members are formed by bending one rod-shaped body into a substantially U shape. Reinforcing members are provided at the connection points between the horizontal member and the left and right vertical members.
The canopy for a working machine according to claim 1 or 2, wherein a mounting portion supported by the working machine is provided in a portion of the horizontal member near the reinforcing member on the left and right. The method according to any one of claims 1 to 3, wherein the bolts penetrating the support frame and the roofing material from below the support frame and the nuts mounted from above the roofing material are tightened and fixed. Canopy for working machines. The canopy for a working machine according to any one of claims 1 to 4, wherein a bent portion for reinforcement is formed on the outer peripheral edge of the roofing material over the entire circumference. The rear end of the roofing material overlaps with the rear end of the driver's seat in the driver's section of the work machine, and the front end of the roofing material overlaps with the control tower provided in front of the driver's seat. The canopy for a working machine according to any one of claims 1 to 5, which is configured.

Images