Work Machine

Abstract

To enable an engine bonnet to be made open.SOLUTION: A work machine includes: an engine bonnet 13 supported so as to be moved to an open state and a closed state; an operation part structure 26 connected to the engine bonnet 13 in an integrally swingable manner; slidably supporting mechanisms 68 and 71; and a rolling support mechanism 60. The slidably supporting mechanisms 68 and 71 bring a slide contact member 71 on an engine bonnet 13 side and a slide contact member 68 on a machine body frame 2 side into sliding contact in the middle of the movement of the engine bonnet 13, and supports a load of the engine bonnet 13 and the operation part structure 26. While causing a rolling member 62 on the engine bonnet 13 side or on the machine body frame 2 side to roll in the middle of the movement of the engine bonnet 13, the rolling support mechanism 60 causes it to abut against a rolled member 61 of the other and supports a load of the engine bonnet 13 and the operation part structure 26.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a work machine including an engine bonnet that can be pivoted open and closed, and an engine air cleaner supported by the engine bonnet. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been a work machine equipped with an engine bonnet that can be pivoted open and closed, for example, as described in Patent Document 1. Patent Document 1 describes a combine harvester in which an engine bonnet is supported so as to be freely swingable around a driver's section opening axis, and is switched between a closed state in which the engine bonnet is positioned above the vehicle frame of the self-propelled vehicle, and an open state in which the engine bonnet is positioned outside the self-propelled vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-37460 A Summary of the Invention [Problem to be solved by the invention]

[0004]

[0005] The object of the present invention is to The engine bonnet can be opened and closed smoothly and stably with a simple sliding and rolling operation to prevent the engine bonnet from wobbling. Provide a working machine. [Means for solving the problem]

[0006] The working machine according to the present invention comprises a driver's seat, an engine bonnet on which the driver's seat is supported and which is supported by a machine frame so as to be movable between an open state and a closed state about an opening / closing axis in the vertical direction of the machine body, a driver's section structure which is connected to the engine bonnet so as to be able to swing integrally therewith and which constitutes a driver's section, a sliding support mechanism, and a rolling support mechanism, wherein the sliding support mechanism supports a load between the engine bonnet and the driver's section structure by bringing a sliding member on the engine bonnet side into sliding contact with a sliding member on the machine frame side during movement of the engine bonnet between the closed state and the open state, and the rolling support mechanism supports the load between the engine bonnet and the driver's section structure by rolling a rolling member on either the engine bonnet side or the machine frame side and bringing it into contact with a rolled member of the other while the engine bonnet is moving between the closed state and the open state. .

[0007] In the present invention, the rolling members are preferably rollers.

[0008] In the present invention, it is preferable that the rollers roll about a horizontal axis.

[0009] In the present invention, it is preferable that the rolling member is formed in an arc shape.

[0010] In the present invention, it is preferable that the rolling member is a guide rail.

[0011] In the present invention, it is preferable that the rolling member is supported for free rollability by the aircraft frame, and the rolled member is fixed to the engine bonnet. In the present invention, it is preferable that the sliding member on the vehicle body frame side of the sliding support mechanism does not protrude from the engine bonnet in a plan view when the engine bonnet is in the closed state. [Brief description of the drawings]

[0012] [Figure 1] Overall side view of the work machine [Diagram 2] Overall plan view of the work machine [Diagram 3] Plan view of the work machine with the engine bonnet open [Figure 4] Side view of the driving unit [Diagram 5] FIG. 1A is a perspective view of the engine bonnet in a normal state, and FIG. 1B is a perspective view of the engine bonnet during opening operation. [Figure 6] Plan view of engine bonnet and driver's seat structure in open position [Figure 7] Longitudinal side view of the driving section [Figure 8] Front view of the support installation site of the self-propelled vehicle [Figure 9] Rear view of the driving unit [Figure 10] Longitudinal rear view of the intake case [Figure 11] Cross-sectional plan view of the intake case [Figure 12] Vertical cross-sectional view of engine bonnet support structure [Figure 13] (a) is a plan view of the engine bonnet and the driver's section structure in a closed state, (b) is a plan view of the engine bonnet and the driver's section structure in the middle of being opened, and (c) is a plan view of the engine bonnet and the driver's section structure in an open state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is an overall side view of a working machine according to an embodiment of the present invention. Fig. 2 is an overall plan view of a working machine according to an embodiment of the present invention. As shown in these figures, the working machine according to the embodiment of the present invention is configured to be self-propelled by a crawler traveling device 1, and is equipped with a self-propelled machine body having a driving unit 10 equipped with an engine 11 and a driving unit 20 equipped with a driving cabin 21, and is equipped with a reaping unit 30 connected to the front of a machine body frame 2 of the self-propelled machine body, and is equipped with a threshing device 3 and a grain tank 4 arranged side by side in the machine body lateral direction on the rear side of the machine body frame 2.

[0014] This machine is used to harvest rice, wheat, etc. In other words, the self-propelled body is equipped with a transmission case 5 that is positioned to the side of the driving unit 20 and supported by the body frame 2, and the output of the engine 11 is transmitted to the crawler running device 1 and the harvesting unit 30 via the transmission case 5.

[0015] The reaping unit 30 is raised and lowered between a lowered working state in which the grass dividing tools 32 arranged side by side on the front of the reaping unit 30 are lowered close to the ground and a raised non-working state in which the grass dividing tools 32 are raised high above the ground, by the reaping unit frame 31 being swung up and down relative to the machine frame 2 by a hydraulic cylinder (not shown). When the self-propelled machine is made to travel with the reaping unit 30 in the lowered working state, the reaping unit 30 introduces the planted culms to be reaped by the grass dividing tools 32 into the corresponding lifting devices 33 for lifting and processing, and the planted culms lifted and processed by the lifting devices 33 are reaped and processed by a single clipper-shaped reaping device 34, and the reaped culms are transported toward the rear of the machine by the transport device 35 and supplied to the threshing device 3. The threshing device 3 conveys the culm by clamping the base side of the culm to the rear side of the machine body with a threshing feed chain (not shown), while supplying the tip side of the culm to a handling chamber (not shown) for threshing. The grain tank 4 collects and stores the threshed grains conveyed from the threshing device 3, and the stored threshed grains are conveyed out by a conveying device 6 consisting of a screw conveyor.

[0016] Fig. 4 is a side view of the motor unit 10. Fig. 7 is a vertical cross-sectional side view of the motor unit 10. Fig. 9 is a rear view of the motor unit 10. As shown in these figures, the motor unit 10 is equipped with the engine 11, as well as a radiator 12 for engine cooling arranged laterally outside the engine 11 on the lateral side of the aircraft body, an engine bonnet 13 covering the engine 11 and the radiator 12, and an intake case 14 connected to an upper part of the engine bonnet 13 on the rear side of the aircraft body.

[0017] The radiator 12 is attached via a radiator frame 41 to the outer lateral end of a support frame 40 fixed to the aircraft frame 2. Cooling air is supplied to the radiator 12 by a cooling fan 15 which is driven to rotate by the engine 11.

[0018] That is, the cooling fan 15 performs a suction action toward the front of the radiator through the radiator 12, and draws air outside the engine bonnet from an intake port 13b provided in a side wall portion 13a located in front of the radiator of the engine bonnet 13 into the space inside the engine bonnet in front of the radiator to generate cooling air, and supplies this cooling air to the radiator 12. The cooling fan 15 further performs a suction action toward the inside of the intake case 14 through the space inside the engine bonnet, and draws air outside the intake case into the intake case from an intake port 14b provided in the side wall portion 14a of the intake case 14 to generate cooling air, which is introduced into the space inside the engine bonnet in front of the radiator and merges with the cooling air from the intake port 13b to be supplied to the radiator 12.

[0019] 5(a) is a perspective view in a normal state of the engine bonnet 13. As shown in this figure and in Figures 7 and 9, the engine bonnet 13 is configured to include, in addition to the side wall portion 13a, a rear plate portion 13c located on the rear side of the aircraft body of the engine 11 and the radiator 12, a front plate portion 13d located on the front side of the aircraft body of the engine 11 and the radiator 12, and a top plate portion 13e located on the upper side of the aircraft body of the engine 11 and the radiator 12, thereby forming an engine room that opens inward in the lateral direction of the aircraft body and downward toward the aircraft body.

[0020] As shown in Figs. 7, 9 and 10, the engine bonnet 13 is provided with a cylindrical mounting body 42 (hereinafter, abbreviated as mounting body 42) connected to the rear end of the intake case 14 on the inside of the aircraft body. This mounting body 42 is rotatably connected to the upper end side of a cylindrical support 43 (hereinafter, abbreviated as support 43) erected on the aircraft frame 2. The support 43 is also used as a component facing the up and down of the aircraft body located at the inside end of the support frame 40. The support 43 is provided with a support arm 44 extending from its upper end toward the upper side of the aircraft body. An extending end 44a of the support arm 44 is rotatably connected to the upper end side of the mounting body 42, and the support 43 supports the upper end side of the mounting cylinder 42 via the support arm 44.

[0021] That is, the engine bonnet 13 is pivotally supported on the support pillar 43 via the mounting tube 42, and swings open and close around an opening / closing axis P that is provided on the support pillar 43 and faces the vertical direction of the aircraft. The intake case 14 swings together with the engine bonnet 13. When the engine bonnet 13 is in a closed state, the support pillar 43 is located inside the outer lateral edge of the engine bonnet 13 in the lateral direction of the aircraft and at the rear side of the engine bonnet 13.

[0022] As shown in Figures 1 and 4, the driver's section 20 not only comprises the driver's cabin 21, but also comprises a driver's seat 22 attached to the upper surface of the top plate portion 13e of the engine bonnet 13, a control tower 23 located in front of the driver's seat 22, a driver's section floor 24 located between the control tower 23 and the driver's seat 22, and a lateral side wall 25 that closes the space between the control tower 23 and the engine bonnet 13 on the side opposite the boarding / alighting entrance.

[0023] Hereinafter, the operator's floor 24, the control tower 23, the lateral side wall 25, and the operator's cabin 21 will be referred to as an operator's structure 26. This operator's structure 26 is connected to the engine bonnet 13 so as to be able to swing integrally therewith.

[0024] FIG. 3 is a plan view of the engine bonnet 13 and the driving section structure 26 of the combine harvester in an open state. FIG. 6 is a plan view of the engine bonnet 13 and the driving section structure 26 in an open state. As shown in these figures, the engine bonnet 13 is swung around the opening and closing axis P toward the outside of the machine body, and when the engine bonnet 13 faces the outside of the machine body, the engine bonnet 13 is in an open state, and the engine 11 and the radiator 12 are opened so that they can be easily inspected and repaired. At this time, the driving section structure 26 swung together with the engine bonnet 13, and the front window 21a of the driver's cabin 21 faces the outside of the machine body in an open state, and the transmission case 5 and its vicinity are opened so that they can be easily inspected and repaired. At this time, the grain tank 4 is swung open toward the outside of the machine body about the axis of the vertical screw conveyor 6a of the discharge device 6 so that the engine bonnet 13 and the driving section structure 26 can enter the tank space.

[0025] 5(a) is a perspective view of the engine bonnet 13 during opening operation. As shown in this figure, when opening the engine bonnet 13, the front plate 13d of the engine bonnet 13 and a part 25a of the side wall 25 of the driver's section 24 are removed, and a part 24a of the driver's section floor 24 of the driver's section 24 is raised, forming an opening 27 between the engine bonnet 13, the driver's section floor 24, and the side wall 25 to avoid interference with devices in the engine room.

[0026] 2 is a plan view of the engine bonnet 13 and the driver's section structure 26 of the combine harvester in a closed state. As shown in this figure, when the engine bonnet 13 is swung toward the inside of the machine body about the opening / closing axis P and the engine bonnet 13 faces the front of the machine body, the engine bonnet 13 is in a closed state and covers the engine 11 and the radiator 12. At this time, the driver's section structure 26 swings together with the engine bonnet 13, and the front window 21a of the driver's cabin 21 faces the front of the machine body and is in a closed state, covering the transmission case 5 and its vicinity.

[0027] As shown in Figures 9, 10, and 11, the engine bonnet 13 is equipped with an engine air cleaner 50 (hereinafter referred to as air cleaner 50) that is disposed inside one end side of the intake case 14 in the lateral direction of the aircraft and supported by the top plate portion 13e.

[0028] The air cleaner 50 has an inlet 50a that opens into the inside of the intake case 14. An outlet 50b of the air cleaner 50 is connected to the attachment body 42 by an air cleaner side intake pipe 51. The air cleaner side intake pipe 51 is connected to the outlet 50b of the air cleaner 50 and a connection port 42a provided in the attachment body 42.

[0029] As shown in Figure 12, the lower end of the mounting body 42 is fitted into a connecting tube portion 45 provided on the upper end of the support 43, and the mounting body 42 and the support 43 are connected to each other by the communicating action of the connecting tube portion 45.

[0030] The support 43 and the intake section of the engine 11 are communicated with each other through an engine-side intake pipe 52. The engine-side intake pipe 52 is connected to a connection port 43a provided in the support 43.

[0031] In other words, the air cleaner 50 uses the suction action of the engine 11 to draw in air from the intake case through the inlet 50a, removes dust from the drawn-in air, and then supplies it to the engine 11 from the outlet 50b via the air cleaner side intake pipe 51, the mounting body 42, the support 43, and the engine side intake pipe 52 as combustion air.

[0032] The mounting body 42 and the support 43 form a rotary joint that rotatably connects the engine side intake pipe 52 and the air cleaner side intake pipe 51, eliminating the need to remove the engine side intake pipe 52 and the air cleaner side intake pipe 53 when the engine bonnet 13 is opened or closed by swinging it.

[0033] As shown in FIGS. 10 and 11, the intake case 14 houses a plurality of electrical components 55 and one partition plate 56 arranged on the side end of the case opposite to the side end on which the air cleaner 50 is located. The electrical equipment 55 is configured to provide electronic control for maintaining the threshing depth of the threshing device 3 at a set depth, and electronic control for maintaining the mowing height of the reaping section 30 at a set height. The partition plate 56 separates the case internal space in which the electrical equipment 55 is located from the case internal space in which the air cleaner 50 is located, and prevents dust from flowing into the case internal space in which the electrical equipment 55 is located even if dust flows into the case internal space that houses the air cleaner 50, thereby preventing dust from adhering to the electrical equipment 55.

[0034] 9, the motor unit 10 includes a support mechanism 60 provided across the support frame 40 and the engine bonnet 13. As shown in FIGS. 6, 7, 9, and 10, the support mechanism 60 includes a guide rail portion 61 fixed to the underside of the top plate portion 13e of the engine bonnet 13, and a support portion 62 fixed to the upper portion of the rear end side of the support frame 40.

[0035] The guide rail portion 61 is formed of a rail material having an arc shape centered on the opening / closing axis P in a plan view. The support portion 62 is formed of a roller supported by the support frame 40 via a holder 63 so as to be freely rotatable, and when the engine bonnet 13 is in a closed state or an open state, the support portion 62 abuts against an end portion of the guide rail portion 61 on the side corresponding to the closed state or the open state of the engine bonnet 13 to support the load between the engine bonnet 13 and the driver's section structure 26. As a result, when the engine bonnet 13 swings from one of the closed state and the open state to the other, the support portion 62 slidably abuts against the guide rail portion 61 while rolling, and supports the load between the engine bonnet 13 and the driver's section structure 26.

[0036] In other words, when the engine bonnet 13 and the driver's section structure 26 are moved from one of the closed and open states to the other, the support mechanism 60 supports the engine bonnet 13 at a point away from the free end side of the opening and closing axis P using the guide rail portion 61 and the support portion 62, preventing sagging of the free end side of the engine bonnet 13 and making it less likely that twisting will occur between the mounting body 42 and the support pillar 43.

[0037] As shown in Figures 6, 8 and 13, the self-propelled body comprises an initial support part 67 formed by fixing a plate body via a pillar 66 to the front end of the body frame 2, a second support part 68 formed by fixing a frame body positioned laterally outboard of the body than the support part 67 to the front end of the body frame 2, and a receiving support part 65 formed by attaching a plate body near the rear side of the driving part 10 of the body frame 2.

[0038] Fig. 13(a) is a plan view of the engine bonnet 13 and the driver's section structure 26 in a closed state. Fig. 13(b) is a plan view of the engine bonnet 13 and the driver's section structure 26 in the middle of being opened. Fig. 13(c) is a plan view of the engine bonnet 13 and the driver's section structure 26 in an open state. As shown in these figures, the self-propelled vehicle uses the support parts 67, 68 to reduce the operating force required for supporting the driver's section structure 26 when the driver's section structure 26 is positioned between the closed state and the open state.

[0039] That is, in the initial stage when the driver's section structure 26 starts to swing from the closed state to the open state, the initial portion 70 located on the lower part of the lateral wall portion 13a of the driver's section frame rests on and slides against the initial support portion 67, and this support portion 67 acts as a support for the initial portion 70 to support the load of the driver's section structure 26. When the driver's section structure 26 further swings toward the open state and the initial portion 70 of the driver's section frame reaches a position just before it comes off the initial support portion 67, the second portion 71 located on the underside of the driver's section floor 24 of the driver's section frame rests on the second support portion 68, and even after the initial portion 70 comes off the initial support portion 67, the second portion 71 rests on and slides against the second support portion 68. As a result, from the time when the driving section structure 26 reaches a swing position where the initial section 70 is located at the end of the initial support section 67, until the initial section 70 detaches from the initial support section 67 and reaches a swing position further toward the open state, the second-phase support section 68 acts as a support for the second-phase section 71 to support the load of the driving section structure 26.

[0040] The engine bonnet 13 of the self-propelled vehicle, which has been switched to the open state, is stably supported by the receiving and supporting portion 65.

[0041] That is, when the engine bonnet 13 is in an open state, the lower end portion 13f of the lateral wall portion 13a of the engine bonnet 13 rides up on the receiving support portion 65. As a result, the receiving support portion 65 acts to receive the lower end portion 13f and supports the engine bonnet 13 on the free end side with respect to the support mechanism 60.

[0042] [Another embodiment] Instead of the above-described engine bonnet 13, the present invention can also be applied to an engine bonnet that is not connected to the driver's floor 24 of the driver's section 20 or the driver's cabin 21. In other words, even if the engine bonnet opens and closes independently, the object of the present invention can be achieved. [Explanation of symbols]

[0043] 2 Aircraft frame 13 Engine bonnet 20 Driving Department 22 Driver's seat 26 Driving section structure 60 Rolling support mechanism 61 Rolling member 62 Rolling members 68 Sliding support mechanism on the machine frame 71 Engine bonnet side sliding support mechanism P Opening / closing axis

Claims

1. The driver's seat and an engine bonnet that supports the driver's seat and is supported by an aircraft frame so as to be movable between an open state and a closed state about an opening / closing axis that faces the aircraft vertically; A driving section structure that is connected to the engine bonnet so as to be able to swing integrally therewith and that constitutes a driving section; A sliding support mechanism; A rolling support mechanism, the sliding support mechanism supports a load between the engine bonnet and the driver's section structure by bringing a sliding contact member on the engine bonnet side into sliding contact with a sliding contact member on the aircraft frame side during movement of the engine bonnet between the closed state and the open state, The rolling support mechanism is a work machine that supports the load of the engine bonnet and the driver's section structure by rolling one of the rolling members on the engine bonnet side or the aircraft frame side and abutting it against the other rolling member during movement of the engine bonnet between the closed state and the open state.

2. 2. The work machine according to claim 1, wherein the rolling members are rollers.

3. 3. The work machine according to claim 2, wherein the rollers roll about horizontal axes.

4. The work machine according to claim 1 , wherein the rolling member is formed in an arc shape.

5. 2. The work machine according to claim 1, wherein the rolling member is a guide rail.

6. The rolling member is supported by the aircraft frame so as to be capable of rolling freely. The working machine according to any one of claims 1 to 5, wherein the rolling member is fixed to the engine bonnet.

7. A work machine according to any one of claims 1 to 5, wherein the sliding member on the vehicle frame side of the sliding support mechanism does not protrude from the engine bonnet in a plan view when the engine bonnet is in the closed state.

Images