JP5588294B2 - Management machine - Google Patents

Description

  The present invention relates to, for example, a walking type management machine, and more particularly, to a management machine in which a bonnet covering an engine, a muffler, etc. of the machine body is detachable from the machine body.

  Conventionally, for example, in a walk-type management machine, in order to protect the engine and muffler from mud and rain water, and to protect the driver and the like from exhaust heat of the engine and muffler, a part of the upper part of the body is removed. A bonnet is disposed so as to cover. This bonnet is desired to be easily detachable in order to perform maintenance of the engine and confirmation of the remaining amount of fuel, for example. Therefore, what attaches a bonnet (protective cover) with respect to an airframe by magnetic force is proposed (refer to patent documents 1).

JP-A-8-322314

  In the case where the bonnet (protective cover) is attached to the airframe by magnetic force as in Patent Document 1 described above, there is an advantage that the bonnet can be easily attached / detached. However, if mud adheres to the magnet, the magnetic force is reduced. There was also a problem that a large amount of noise was generated during work due to rattling.

  Therefore, an object of the present invention is to provide a management machine that does not use a magnet as a bonnet attaching / detaching mechanism and that makes it easy to attach / detach the bonnet to / from the machine body.

The present invention (see, for example, FIGS. 1 to 5), in a management machine (1) provided with a bonnet (50) covering at least a part of the upper part of the machine body (12),
A first fixing part (61) capable of fixing one end side in the front-rear direction of the bonnet (50) to the body (12), and a second end side in the front-rear direction of the bonnet (50) are fixed to the body (12). A second fixing part (62) that can be,
The first fixing portion (61) has an engagement surface (45c) and an extending portion (45a) that is bent from the engagement surface (45c) and has an engagement hole (45b). A first fixing member (45, 46) fixed to the airframe (12) side, and an upper plate (51b) fixed to the bonnet (50) side and engageable with the engaging surface (45c). and a protrusion engageable in said engaging hole (45 c) (51a), and a first engaging member which is bent in side view a crank shape (51), wherein the projecting portion (51a ) Engages with the engagement hole (45b) and the upper surface of the protrusion (51a) engages with the lower surface of the extended portion (45a). by close contact with the surface (45 c), vertical position and the position in the lateral direction of the hood (50) with respect to the machine body (12) Configured to be secured,
The second fixing portion (62) is fixed to the second fixing tool (47) fixed to the airframe (12) side and fixed to the bonnet (50) side, and is elastically deformed to form the second fixing tool (47). And a second engaging tool (55) that can be fitted to the second fixing tool (47), and lowering the second engaging tool (55) from a non-fitting position on the upper side. by being moved and fitted to the fitting position of the side, characterized in that the vertical position and the front-rear direction position of the said bonnet for machine body (12) (50) is configured to be secured.

Further, (see e.g., FIGS. 2-5) The present invention, before Symbol first fixing portion (61), the other one of said first fastener (45, 46) and said first engaging member (51) A width restricting portion (46a) that contacts the left and right end portions (51c) of
When the protrusion (51a) is allowed inserted in position置合the engaging hole (45b), the width regulating unit (46a) said first fastener (45, 46) and said first engagement By restricting the other left-right direction of the tool (51), the left-right position of the bonnet (50) with respect to the airframe (12) is fixed.

  Furthermore, the present invention (see, for example, FIGS. 2 and 5) is disposed in the vicinity of the second fixing tool (47) or the second engaging tool (55), and the second fixing tool (47) includes the above-mentioned A vibration absorbing member (57) that is in close contact with the airframe (12) and the bonnet (50) at the fitting position where the second engaging tool (55) is fitted is provided. .

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, this is for convenience for making an understanding of invention easy, and has no influence on the structure of a claim. It is not a thing.

  According to the first aspect of the present invention, the front-rear direction alignment of the first engaging tool with respect to the first fixing tool at the first fixing portion, and the upper and lower positions of the second engaging tool with respect to the second fixing tool at the second fixing portion. The bonnet is fixed vertically, horizontally, and forward / backward with respect to the fuselage by only moving and fitting, so that the bonnet can be easily attached / detached to / from the fuselage without using a magnet as the hood attachment / detachment mechanism. .

According to the second aspect of the present invention, since the other left and right direction is restricted by the width restricting portion provided on one of the first fixing tool and the engaging tool, the first fixing tool and the first engaging tool are aligned. Only the position of the bonnet in the left-right direction relative to the aircraft can be fixed. In addition, since the width restricting portion is disposed at a different site from the engaging hole and the protruding portion, it is possible to prevent stress from concentrating on the engaging hole and the protruding portion, and to improve the durability as the first fixing portion. Can be planned.

  According to the third aspect of the present invention, the bonnet includes the vibration absorbing member that is in close contact with the airframe and the bonnet at the fitting position where the second engaging tool is fitted to the second fixing tool. The generated vibration can be absorbed, and noise can be prevented. Further, since the vibration absorbing member is in close contact with the fuselage and the bonnet at the fitting position between the second fixing tool and the second engaging tool, the fitting is performed when the second fixing tool and the second engaging tool are fitted. The vibration absorbing material can be brought into contact with the airframe and the bonnet at the mating position to assist the alignment, and the accurate fitting position alignment between the second fixing tool and the second engaging tool can be facilitated. it can.

The side view which shows the walk type management machine 1 which concerns on this Embodiment. Sectional drawing which shows the bonnet attached to the body. The disassembled perspective view which shows a bonnet and each bracket. Sectional drawing which shows a bonnet. Sectional drawing which shows the body which removed the bonnet.

  Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 5.

  As shown in FIG. 1, the walking management machine 1 is configured integrally with a traveling unit 10 and a tilling unit 30 with the tilling unit 30 disposed on the rear side. The traveling unit 10 has a pair of traveling wheels 11 on an axle 15 extending in the left-right direction, and an engine 13 and a transmission transmission unit 40 are disposed on the body 12 supported by the traveling wheels 11. A fuel tank 14 is disposed behind the engine 13 so as to be covered with a panel cover 41. A fuel cap 14 a capable of supplying fuel to the fuel tank 14 is disposed on the panel cover 41 so as to protrude upward.

  Above the engine 13, there is disposed a muffler 16 that performs decompression and silencing during exhaust in the engine 13, and the muffler 16 is covered with a muffler cover 25. In detail, the bonnet 50 described later covers the engine 13 and a part of the muffler 16 (that is, covers a part of the front side of the upper part of the fuselage 12), in particular, the center of the muffler cover 25 protruding to the left and right sides. It is detachably attached to the airframe 12 so as to cover the part.

  Further, from the rear part of the machine body 12, a shift lever 17 for shifting the speed change transmission unit 40 and a handle frame 18 for operating the traveling direction of the machine body 12 are arranged to extend rearward. Further, a shift guide panel 23 having a guide groove for guiding the operation path of the shift lever 17 is disposed in the lower rear portion of the fuel tank 14 so as to cover the rear side of the machine body 12.

  The handle frame 18 includes an inclined portion 18a extending rearward and obliquely upward from a frame 19 extending at the rear of the machine body 12, and a horizontal portion that is bent from the middle of the inclined portion 18a and is in a horizontal state substantially parallel to the field. 18b and a handle 18c formed at the rearmost end of the horizontal portion 18b. The handle 18c is formed in a long shape extending in the left-right width direction in the rear view so that the operator can hold it with one or both hands.

  The handle frame 18 is configured to be foldable to the upper side of the machine body 12 by loosening the knob bolt 20, and the shift lever 17 is configured such that the root portion 17b and the tip portion 17a are separable. The tip 17a separated and removed can be detachably attached to the frame 19 (indicated by reference numeral 17a ′) and stored, so that the management machine 1 can be downsized in combination with the folding of the handle frame 18. This makes it possible to make the storage space of the management machine 1 compact and facilitate transportation.

  In the handle frame 18, a clutch handle 29 supported so as to be able to come into contact with and separate from the handle 18 c is disposed at a transition portion from the inclined portion 18 a to the horizontal portion 18 b. The clutch handle 29 rotates from a horizontal position overlapping the handle 18c (a position where the clutch is engaged) to a position rising at an angle of about 60 ° with respect to the handle 18c (a position where the clutch is disconnected). Is obtained (indicated by an arrow X in FIG. 1).

  On the upper right side of the handle frame 18, a stop button 28, a throttle lever 27, and the like of the engine 13 are disposed. The stop button 28 functions to forcibly stop the engine 13 unconditionally when pressed down regardless of whether the clutch handle 29 is connected or disconnected. The rotation speed of the engine 13 is adjusted in the throttle lever 27 by a wire connected to the throttle lever 27, and the traveling speed of the walking type farm working machine 1 is adjusted.

  On the other hand, the cultivating unit 30 includes a cultivating shaft 31 extending in the left-right direction from the speed change transmission unit 40, a cultivating claw (cultivating blade) 32 fixed to the cultivating shaft 31 and cultivating the field, and A tilling cover 33 covering the upper part and a rear cover 34 attached to the rear of the tilling cover 33 are provided. A large number of tilling claws 32 are mounted around the tilling shaft 31 and have a target shape in the front-rear direction in a side view, either when the tilling shaft 31 is rotated forward (ω1 direction) or reversely rotated (ω2 direction). Is also available. Then, the tilling shaft 31 and the tilling claw 32 are rotationally driven by the output of the engine 13 that is transmitted via the speed change transmission unit 40.

  Next, the attachment structure of the bonnet 50 according to the present invention will be described with reference to FIGS. As shown in FIG. 2, the fuselage 12 includes a main frame 12a at a lower portion and a subframe 12b fixedly supported by the main frame 12a at a rear side. The engine 13 is fixed on the main frame 12a. It is supported. The transmission guide panel 23 is fixedly supported on the further rear side of the subframe 12b. Further, a support plate 42 is fixed above the sub-frame 12b. The support plate 42 includes an upper plate 42a that is bent in the horizontal direction and a vertical plate that extends upward from the upper plate 42a. 42b (see FIG. 5). A panel cover 41 that covers the fuel tank 14 and the transmission guide panel 23 is fixed to the upper plate 42 a by bolts 43.

  A fuselage side bracket (first fixing tool) 45 is fixed to the upper front side of the engine 13. A bonnet side front bracket (first engaging tool) 51 fixed to the front of a bonnet 50 described later in detail. And the body-side bracket 45 constitute a first fixing portion 61 that enables the front side of the bonnet 50 to be fixed to the body 12. Further, a fixing bar (second fixing tool) 47 is fixed to the vertical plate 42b of the support plate 42 by welding or the like. Specifically, a bonnet side rear bracket 54 fixed to the rear of the bonnet 50, which will be described later, and a sandwiching spring (first clamp). The second fixing portion 62 that allows the rear side of the bonnet 50 to be fixed to the airframe 12 is constituted by the (second engaging tool) 55 and the fixing bar 47.

  Specifically, as shown in FIGS. 3 and 5, the machine body side bracket 45 constituting the first fixing portion 61 (see FIG. 2) has side plates 45 d and 45 d extending downward from the upper plate 45 c as bolts. 49 and 49 are fixed to the upper part of the case of the engine 13. The front side of the upper plate 45c of the airframe side bracket 45 has an extending portion 45a bent in a crank shape in a side view. The extending portion 45a includes a bonnet side front bracket 51 which will be described in detail later. An engaging hole 45b is formed into which the protruding portion 51a is inserted and engaged.

  Further, a width regulating bracket (first fixture) 46 is disposed on the upper surface of the upper plate 45c of the airframe side bracket 45, and the bottom plate 46b is fixed to the upper surface of the upper plate 45c by welding or the like. Yes. The width restricting bracket 46 includes width restricting portions 46a and 46a that are bent at the left and right end portions, and the inside of the width restricting portions 46a and 46a is a bonnet-side front bracket 51 described later. It is comprised so that it may contact | abut to the right-and-left end parts 51c and 51c of the upper board 51b.

  On the other hand, as shown in FIGS. 3 and 4, the bonnet-side front bracket 51 that constitutes the first fixing portion 61 (see FIG. 2) includes bolts 52 that are screwed into bolt holes 50 a and 50 a formed in the bonnet 50. It is fastened and fixed to the bonnet 50 by 52. The bonnet-side front bracket 51 has an upper plate 51b, and a protruding portion 51a protruding from the upper plate 51b toward the front lower side is bent. The width of the upper plate 51b is such that the left and right end portions 51c and 51c are in contact with the inside of the width restricting portions 46a and 46a as described above. Further, the width of the protrusion 51a is such that it can be inserted into the engagement hole 45b, and the upper surface of the protrusion 51a is located at the position where the upper plate 51b is in close contact with the bottom plate 46b of the width restricting bracket 46. It is comprised so that it may closely_contact | adhere to the lower surface of the extending part 45a.

  As shown in FIG. 5, the fixing bar 47 constituting the second fixing portion 62 (see FIG. 2) is fixed to a vertical plate 42 b extending vertically from the upper plate 42 a of the support plate 42. The vertical plate 42b fixedly supports both left and right ends of the fixing bar 47, and a middle portion of the fixing bar 47 in the longitudinal direction is cut out so that a holding plate 55a of a holding spring 55 described later can be inserted.

  On the other hand, the bonnet side rear bracket 54 and the sandwiching spring 55 constituting the second fixing portion 62 (see FIG. 2) are screwed into bolt holes 50b, 50b formed in the bonnet 50, as shown in FIGS. The bonnet 50 is fastened and fixed by the bolts 53 and 53 to be joined. Specifically, the bonnet-side rear bracket 54 includes an upper surface plate 54 a and a front vertical plate 54 b that is bent from the upper surface plate 54 a toward the front lower side, and the upper surface plate 54 a is a bottom plate 55 b of the holding spring 55. At the same time, it is fastened by bolts 53, 53 and fixed to the bonnet 50.

  The sandwiching spring 55 has two sandwiching plates 55a and 55a on the front and rear sides of the bottom plate 55b, and is fitted by elastically deforming and sandwiching the fixing bar 47 from the front and rear directions (see FIG. 2). Configured to get. Further, two cylindrical cushions (vibration absorbing members) 57 and 57 made of rubber, for example, fixed to the upper surface plate 54a of the bonnet side rear bracket 54 are disposed in the vicinity of both the left and right sides of the holding spring 55. ing.

  As shown in FIG. 2, the cushions 57 and 57 are located at a position where the holding spring 55 is fitted to the fixing bar 47, and the bonnet 50 and the panel cover 41 described above via the upper surface plate 54 a of the bonnet side rear bracket 54. It is formed in such a length that it is in close contact with the front end portion 41a of the vehicle, that is, it is in close contact with the airframe 12 and the bonnet 50 and absorbs vibrations that propagate to the bonnet 50. Further, the cushions 57 and 57 are in contact with the front end portion 41a of the panel cover 41 at the position where the holding spring 55 is fitted to the fixing bar 47, that is, the fitting position between the holding spring 55 and the fixing bar 47. 47 does not enter the side of the bottom plate 55b of the sandwiching spring 55, and assists their fitting position alignment, thereby enabling accurate positioning.

  Further, as shown in FIG. 2, the front sides of the cushions 57, 57 are covered with a front vertical plate 54 b of the bonnet-side rear bracket 54, and a space between the cushions 57, 57 and the engine 13 and the muffler 16 is provided. It is configured to shield. That is, heat from the engine 13 and the muffler 16 is shielded and protected by the front vertical plate 54b, and deterioration of the cushions 57, 57 is prevented.

  Subsequently, an attaching / detaching operation (attaching operation) of the bonnet 50 to the machine body 12 will be described. For example, when the bonnet 50 removed from the airframe 12 is attached to the airframe 12, first, the airframe side bracket 45 is extended at the first fixing portion 61 (the front side (one end side) of the bonnet 50). The protrusion 51a of the bonnet side front bracket 51 is aligned and inserted into the engagement hole 45b of the portion 45a. Thereafter, the bonnet 50 is moved from the non-engagement position on the rear side (one side) to the engagement position on the front side (the other side), so that the protrusion 51a slides below the extended portion 45a and engages. Accordingly, the bonnet 50 is fixed to the machine body 12 with respect to the vertical position.

  At the same time, the protrusion 51 a of the bonnet-side front bracket 51 is inserted into the engagement hole 45 b of the extending portion 45 a of the fuselage-side bracket 45, and at the same time, the upper plate 51 b of the bonnet-side front bracket 51 is It abuts against the width restricting portions 46a and 46a and is restricted in the width direction. Thereby, the bonnet 50 is fixed to the airframe 12 with respect to the left-right direction position.

  Subsequently, in the second fixing portion 62 (the rear side (the other end side) of the bonnet 50), the bonnet 50 is rotated from the first fixing portion 61 as a fulcrum and is moved downward from the upper side (non-fitting position). Move to the side (fitting position). Then, the holding spring 55 is fitted into the fixing bar 47 while being elastically deformed, whereby the bonnet 50 is fixed with respect to the front-rear position and also fixed with respect to the vertical position. At this time, as described above, since the cushions 57 and 57 come into contact with the front end portion 41a of the panel cover 41, the fixing bar 47 is aligned at an accurate fitting position without entering the bottom plate 55b side of the holding spring 55. The

  Note that when removing the bonnet 50 from the machine body 12, only the above-described mounting operation is performed in reverse, and the rear side of the bonnet 50 is moved upward, and the holding spring 55 is moved from the fixing bar 47 to the second fixing portion 62. In the second fixing portion 61, the protrusion 51a of the bonnet-side front bracket 51 is simply removed from the engagement hole 45b of the extending portion 45a of the airframe-side bracket 45.

  As described above, according to the present management machine 1, the bonnet-side front bracket 51 is aligned in the front-rear direction with respect to the fuselage-side bracket 45 in the first fixing portion 61, and the clamping spring 55 is fixed to the fixing bar 47 in the second fixing portion 62. Since the bonnet 50 is fixed in the up / down / left / right / front / rear direction with respect to the airframe 12 only by the vertical movement and fitting operation, the bonnet 50 can be attached to and detached from the airframe 12 without using a magnet. It can be simplified.

  Further, when the protrusion 51a of the bonnet front bracket 51 is inserted into the engagement hole 45b of the fuselage side bracket 45 and aligned with the engagement position, the width restriction portions 46a and 46a of the width restriction bracket 46 are provided. Since the left and right direction of the bonnet side front bracket 51 is restricted, the left and right position of the bonnet 50 relative to the body 12 can be fixed simply by aligning the bonnet side front bracket 51 with the body side bracket 45. In addition, since the width restricting portions 46a and 46a are arranged at different locations from the engaging hole 45b and the protruding portion 51a, it is possible to prevent stress from concentrating on the engaging hole 45b and the protruding portion 51a, and the first fixing. The durability as the part 61 can be improved.

  Further, since the cushions 57 and 57 that are in close contact with the airframe 12 and the bonnet 50 are provided at the fitting position where the holding spring 55 is fitted to the fixing bar 47, the vibration generated in the bonnet 50 is absorbed. It is possible to prevent noise generation. Further, since the cushions 57 and 57 are in close contact with the airframe 12 and the bonnet 50 at the fitting position between the fixing bar 47 and the holding spring 55, when the fixing bar 47 and the holding spring 55 are fitted together, The cushions 57 and 57 can contact the machine body 12 and the bonnet 50 to assist the alignment, and the alignment of the exact fitting position between the fixing bar 47 and the holding spring 55 can be facilitated.

  In the present embodiment described above, in the first fixing portion, when the protrusion 51a is inserted into the engagement hole 45b to be engaged, the first fixed portion is moved from the rear side to the front side and engaged. As described above, the opposite may be possible, that is, when moving from the front side to the rear side (that is, from one side to the other side), the protrusion 51a engages with the engagement hole 45b and is fixed in the vertical direction. It may be changed. In this case, of course, the width restricting portions 46a, 46a of the width restricting bracket 46 are preferably configured so as to restrict the left-right direction position of the bonnet-side front bracket 51 as it is.

  In the present embodiment, the first fixing portion has been described in which the width restriction bracket 46 restricts the left-right position of the bonnet-side front bracket 51. In particular, the protrusion 51a is formed in the engagement hole 45b in the width direction. Also, it may be configured to be fitted and regulated in the width direction.

  Further, in the present embodiment, an engagement hole 45b is formed in the airframe side bracket 45 (one of the first fixing tool and the first engagement tool), and the protrusion 51a inserted into the engagement hole 45b is provided with a bonnet. In the above description, the front-side bracket (the other of the first fixing tool and the first engaging tool) 51 is formed. However, on the contrary, an engagement hole is formed in the bonnet-side front bracket 51 and engaged with the body-side bracket 45. Protrusions that are inserted into the holes may be formed.

  Further, in the present embodiment, the first fixing portion that fixes the vertical and horizontal directions of the bonnet 50 is the front side of the bonnet 50, and the second fixing portion that fixes the front and rear directions and the vertical direction of the bonnet 50 is the bonnet 50. However, the first and second fixing portions may be reversed with respect to the front-rear direction.

  In the present embodiment, the cushions 57 and 57 are fixed to the bonnet side rear bracket 54 in the vicinity of the holding spring 55. However, the cushions 57 and 57 are fixed to the panel cover 41 in the vicinity of the fixing bar 47. And you may comprise so that it may contact | abut to the bonnet side rear bracket 54 at the time of attachment of the bonnet 50. FIG.

  Further, in the present embodiment, the description has been given of the one in which the clamping spring 55 elastically deforms the fixing bar 47 and clamps it in the front-rear direction. However, the present invention is not limited to this. The elastic member that fits into the ball-shaped portion may be fixed to the bonnet 50, and conversely, a fixing bar is provided on the bonnet 50 side and a holding spring is provided on the machine body 12 side. It may be provided, that is, the structure of the second fixing portion may be anything as long as the front-rear direction and the up-down direction are fixed by a member that is elastically deformed and a member that is fitted thereto.

1 management machine 12 machine body 45 1st fixture (airframe side bracket)
45b Engagement hole 46 1st fixing tool (width control bracket)
46a Width regulating portion 47 Second fixing tool (fixing bar)
50 Bonnet 51 First engagement tool (bonnet side front bracket)
51a Protrusion 51c Left and right end 55 Second engagement tool (clamping spring)
57 Vibration absorbing member (cushion)
61 1st fixing part 62 2nd fixing part

Claims (3)

In a management machine with a bonnet that covers at least part of the upper part of the aircraft,
A first fixing portion capable of fixing one end side of the bonnet in the front-rear direction to the airframe, and a second fixing portion capable of fixing the other end side of the bonnet in the front-rear direction to the airframe,
The first fixing portion has an engaging surface and an extending portion that is bent from the engaging surface and has an engaging hole, and is fixed to the machine body side, A first engagement tool that is fixed to the bonnet side, has an upper plate that can be engaged with the engagement surface, and a projection that can be engaged with the engagement hole, and is bent in a crank shape in a side view ; the equipped, in a state in which the protrusion is engaged with the engaging hole, and the upper surface of the protrusion portion engaged with the lower surface of the extended portion, that said upper plate is brought into close contact with the engaging surface The bonnet with respect to the airframe is configured such that the vertical position and the horizontal position are fixed,
The second fixing portion includes a second fixing tool fixed to the airframe side, and a second engaging tool fixed to the bonnet side and elastically deformable to fit into the second fixing tool. The vertical position of the bonnet relative to the machine body is moved and fitted to the second fixing tool from the upper non-fitting position to the lower fitting position. and the position in the front-rear direction is configured to be secured,
A management machine characterized by that. Before first fixing portion SL has the abutting width regulating section to the other of the right and left end portions on one of the first fastener and said first engaging member,
When the protrusion is allowed inserted in position置合the engaging holes, by the width regulating unit regulates the other in the lateral direction of the first fastener and said first engaging member, said body The bonnet with respect to the left and right direction position is configured to be fixed,
The management machine according to claim 1. The second fixing tool or the second engaging tool is disposed in the vicinity of the second fixing tool, and the second engaging tool is fitted to the second engaging tool. Equipped with a vibration absorbing member
The management machine according to claim 1 or 2, characterized in that.

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