JP2004243802A - Mounting structure of auxiliary step for getting on and off on working vehicle - Google Patents

Mounting structure of auxiliary step for getting on and off on working vehicle Download PDF

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Publication number
JP2004243802A
JP2004243802A JP2003033116A JP2003033116A JP2004243802A JP 2004243802 A JP2004243802 A JP 2004243802A JP 2003033116 A JP2003033116 A JP 2003033116A JP 2003033116 A JP2003033116 A JP 2003033116A JP 2004243802 A JP2004243802 A JP 2004243802A
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JP
Japan
Prior art keywords
getting
auxiliary step
auxiliary
fixed
support member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003033116A
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Japanese (ja)
Inventor
Kenta Kiiro
健太 木色
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Agricultural Machinery Co Ltd
Original Assignee
Mitsubishi Agricultural Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Agricultural Machinery Co Ltd filed Critical Mitsubishi Agricultural Machinery Co Ltd
Priority to JP2003033116A priority Critical patent/JP2004243802A/en
Publication of JP2004243802A publication Critical patent/JP2004243802A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To after-mount an auxiliary step in the case when a customer desires to mount the auxiliary step on a working vehicle not provided with the auxiliary step for getting on and off on a step on which an operator puts his or her feet in a state of being seated on a seat. <P>SOLUTION: An L shaped support member 51 seen from a flat level and fixed in a state of making contact with a lower surface 13a and an edge side 13b of the step 13R is provided, one side 51a thereof is fixed on an edge side 13b of the step 13R and one side base end part A of the auxiliary step 33R of getting on and off is fixed on the other side 51b. Additionally, the other side base end part B of the auxiliary step 33R for getting on and off is jointly fastened and fixed with bolts on a driving step 13R and a fender 14R. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、農業用トラクタ等の作業車両における乗降用補助ステップの取付け構造に関するものである。
【0002】
【従来の技術】
従来の農業用トラクタにおいては、オペレータが座席に着座した状態で足を置くステップを、クラッチハウジングとミッションケースから延出させた前後一対の強固な支持アームと、該両支持アームの側方及び後車軸ケース側に固定した補強フレーム上に載置すると共に、更に左側の補強フレームの側方に乗降用補助ステップを取付けるように構成したものが知られている(例えば、特許文献1参照。)。
【0003】
また、右側のステップにはフートアクセルペダルやブレーキペダル等が配設されており、これらフートアクセルペダルやブレーキペダルが邪魔になって右側のステップからの乗降頻度は必然的に少なくなるので、可能な限り部品点数を減らして構成される安価タイプの農業用トラクタにおいては、右側のステップに乗降用補助ステップを設けない構成のものが大半を占めている。
【0004】
【特許文献1】
実公昭60−33076号公報(第1−2頁、第4図)
【0005】
【発明が解決しようとする課題】
しかし、前述した右側のステップに乗降用補助ステップを設けていない安価タイプの農業用トラクタは、右側のステップに乗降用補助ステップを取付けるための特別な支持部材を設けておらず、したがって顧客から補助ステップを右側ステップに取付けたいとする要望があった場合は、速やかに対応することができないという問題を有していた。
【0006】
【課題を解決するための手段】
本発明は、上記課題を解決することを目的として創案したものであり、ステップ下部側方に突設する乗降用補助ステップの取付け構造であって、前記ステップの下面及び縁辺に接した状態で支持部材を固定する一方、当該支持部材に少なくとも乗降用補助ステップの一側基端部を固定することを特徴としている。
【0007】
【発明の実施の形態】
本発明の実施形態を以下添付図面に基づいて詳細に説明する。図1は、本発明における農業用トラクタの左側面図であって、該農業用トラクタ1は、左右の前輪2,2及び後輪3,3を有する車体4の前部に、エンジン5及びラジエータ(不図示)等からなる原動機部をボンネット6で覆った状態で配設すると共に、その後方にハンドル7及び座席8等からなる操縦部9を設けている。
【0008】
前記車体4は、エンジン5の側部に取付けるシャーシフレーム10と、エンジン5に連結するクラッチハウジング部11aを備えた中間伝動ケース11と、該中間伝動ケース11に連結するミッションケース12等から構成されると共に、図2に示すように中間伝動ケース11の両側には、オペレータが座席8に着座した状態で足を置く左右のステップ13L,13Rを設けている。
また、前記左右のステップ13L,13Rの後部からそれぞれフェンダー14L,14Rを後方に向けて連設し、左右の後輪3,3の前方及び上方を覆うように構成してある。
【0009】
そして、前記左右のステップ13L,13Rの前部を、ボンネット6で覆われた原動機部と、その後方に配設したダッシュボード21とを区画する門型状支柱22の基部FL,FRに固定すると共に、当該ステップ13L,13Rの後部を、左右のフェンダー14L,14Rの前端部RL,RR及びリヤカバー15に固定するようにしてある。
【0010】
更に、左右のステップ13L,13Rの略中間部は、中間伝動ケース11に取付けた支持部材23L,23Rに防振ゴム(不図示)を介して下方から支持すると共に、その後方の中間伝動ケース11の左右両側に突出するボルト24、25に嵌挿させた円柱状の防振ゴム26、26により下方から支持して、エンジン5からの振動が左右のステップ13L,13Rに伝播することを防いでいる。
【0011】
また、上述した支持部材23Lに防振ゴムを介して支持する左側ステップ13Lの下面には、断面がコの字状の強固な構成の支持プレート31が横設してあり、該支持プレート31の外側端部に乗降用補助ステップ33Lの前側基端部Aをボルトによって固定すると共に、その後側基端部Bを、左側ステップ13Lの後部及び左側フェンダー14L前端部RLとボルトによって共締め固定することにより、左側ステップ13Lの下部側方に乗降用補助ステップ33Lが突設されるようになっている。
【0012】
尚、前記左側ステップ13L上にはクラッチペダル41が設けられる一方、右側ステップ13R上には左右のブレーキペダル42,43及びフートアクセルペダル44等が設けてある。
【0013】
次に、本発明の特徴部分、即ち乗降用補助ステップを取付けるための特別な支持部材が設けられていない右側ステップ13Rに、乗降用補助ステップを取付ける際の実施形態を添付図面に基づいて説明する。
即ち、図3は右側ステップ13Rに支持部材51を介して乗降用補助ステップ33Rを取付けた状態を示す平面図、図4は図3におけるC矢視図、図5は図3におけるD−D断面を示した図である。
【0014】
図3に示すように、支持部材51は帯状鋼板を曲げ加工して平面視でL字プレート状に形成したものであり、その長辺51aと短辺51bの上面が右側ステップ13Rの下面13aに当接し、且つ長辺51aの側面を右側ステップ13R外側の折り曲げ加工された縁辺13bに内接させた状態、即ち支持部材51の曲げ剛性を最も有効に作用させる取付け状態で、当該支持部材51の長辺51aを右側ステップ13Rの縁辺13bにボルト52,52及びナット53,53を用いて固定するようにしてある。
【0015】
また、前記乗降用補助ステップ33Rは、図4に示すように鋼板を略Uの字状に曲げ加工して一体的に形成したものであり、その剛性を高めるために側方リブ33aや、前側基端部A及び後側基端部Bの近傍に絞り加工33b,33bを施すと共に、乗降時に足を掛けるステップ33cには滑り防止用の複数の突起P・・を設けている。
【0016】
そして、前記支持部材51の短辺51bに、乗降用補助ステップ33Rの一側(前側)基端部Aをボルト54,54及びナット55,55を用いて固定すると共に、乗降用補助ステップ33Rの他側(後側)基端部Bをステップ13R、及びフェンダー14Rとボルト56,56を用いて共締め固定するように構成してある。
尚、57,57は、右側ステップ13R後側の折り曲げ加工された縁辺13cの内側に溶接したPナットである。
【0017】
即ち、上述した構成によれば、乗降用補助ステップを取付けるための特別な支持部材が設けられていない右側ステップ13Rに、簡単且つ安価な構成のL字プレート状の支持部材51を介して容易に乗降用補助ステップ33Rを取付けることが可能となり、顧客から補助ステップ33Rを右側ステップ13Rに取付けたいとする要望があった場合は、速やかに後付けして対応することができるようになる。
【0018】
そして、図5に示すように、オペレータが乗降用補助ステップ33Rに足Fを載せて乗降する際は、前記支持部材51は右側ステップ13Rの下面13a及び縁辺13bに接する状態、即ち当該支持部材51の曲げ剛性を最も有効に作用させる取付け状態に固定されているので、それによって乗降時に乗降用補助ステップ33Rの前側基端部Aに生じる曲げ及び捩じりモーメントを吸収できるようになっている。
【0019】
【発明の効果】
以上説明したように本発明は、ステップ13R下部側方に突設する乗降用補助ステップ33Rの取付け構造であって、前記ステップ13Rの下面13a及び縁辺13bに接した状態で支持部材51を固定する一方、当該支持部材51に少なくとも乗降用補助ステップ33Rの一側基端部Aを固定することによって、乗降用補助ステップを取付けるための特別な支持部材が設けられていないステップ13Rに、前記支持部材51を介して容易に乗降用補助ステップ33Rを取付けることが可能になり、顧客から補助ステップ33Rをステップ13Rに取付けたいとする要望があった場合は、速やかに後付けして対応することができるようになる。
【図面の簡単な説明】
【図1】農業用トラクタの左側面図である。
【図2】運転ステップ周辺の構成を示す平面図である。
【図3】右側運転ステップに乗降用補助ステップを取付けた状態を示す平面図である。
【図4】図3におけるC矢視図である。
【図5】図3におけるD−D断面図である。
【符号の説明】
13R ステップ
13a ステップの下面
13b ステップの縁辺
33R 乗降用補助ステップ
51 支持部材
51a 支持部材の一辺(長辺)
51b 支持部材の他辺(短辺)
A 乗降用補助ステップの一側(前側)基端部
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a mounting structure for an auxiliary step for getting on and off a work vehicle such as an agricultural tractor.
[0002]
[Prior art]
In a conventional agricultural tractor, the step of placing the foot while the operator is seated on the seat is performed by a pair of front and rear strong support arms extending from the clutch housing and the transmission case, and side and rear sides of the two support arms. 2. Description of the Related Art There is a known configuration in which a supporting frame is mounted on a reinforcing frame fixed to an axle case side, and an auxiliary step for getting on and off is further mounted on a side of a reinforcing frame on the left side (for example, see Patent Document 1).
[0003]
Also, a foot accelerator pedal, a brake pedal, and the like are provided in the right step, and the foot accelerator pedal and the brake pedal are in the way and the frequency of getting on and off the right step is inevitably reduced. Most inexpensive agricultural tractors constructed with a reduced number of parts do not have an auxiliary step for getting on and off at the right step.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 60-33076 (page 1-2, FIG. 4)
[0005]
[Problems to be solved by the invention]
However, the inexpensive agricultural tractor in which the above-described right step is not provided with an auxiliary step for getting on and off does not have a special support member for attaching the auxiliary step for getting on and off to the right step, and therefore, is not provided by a customer. If there is a request to attach the step to the right step, there is a problem that it is not possible to respond promptly.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problem, and is a mounting structure of an auxiliary step for getting on and off which protrudes from a lower side of the step, and is supported in a state in contact with a lower surface and an edge of the step. While the member is fixed, at least a base end of one side of the getting-on / off assisting step is fixed to the support member.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a left side view of an agricultural tractor according to the present invention. The agricultural tractor 1 includes an engine 5 and a radiator at the front of a vehicle body 4 having left and right front wheels 2, 2 and rear wheels 3, 3. A motor unit (not shown) or the like is covered with a bonnet 6 and a control unit 9 including a steering wheel 7 and a seat 8 is provided behind the motor unit.
[0008]
The vehicle body 4 includes a chassis frame 10 attached to a side of the engine 5, an intermediate transmission case 11 having a clutch housing 11a connected to the engine 5, a transmission case 12 connected to the intermediate transmission case 11, and the like. In addition, as shown in FIG. 2, on both sides of the intermediate transmission case 11, there are provided left and right steps 13L and 13R on which the operator places his or her feet while sitting on the seat 8.
Further, fenders 14L, 14R are continuously provided rearward from rear portions of the left and right steps 13L, 13R, respectively, so as to cover the front and upper sides of the left and right rear wheels 3, 3.
[0009]
Then, the front portions of the left and right steps 13L, 13R are fixed to the base portions FL, FR of the gate-shaped column 22, which partitions the prime mover section covered with the hood 6 and the dashboard 21 disposed behind the prime mover section. At the same time, the rear portions of the steps 13L, 13R are fixed to the front ends RL, RR of the left and right fenders 14L, 14R and the rear cover 15.
[0010]
Further, a substantially intermediate portion between the left and right steps 13L and 13R is supported from below by support members 23L and 23R attached to the intermediate transmission case 11 via vibration isolating rubber (not shown), and a rear intermediate transmission case 11 is provided. Are supported from below by cylindrical anti-vibration rubbers 26, 26 fitted into bolts 24, 25 protruding to the left and right sides of the vehicle, to prevent the vibration from the engine 5 from propagating to the left and right steps 13L, 13R. I have.
[0011]
On the lower surface of the left step 13L supported by the above-mentioned support member 23L via the vibration isolating rubber, a support plate 31 having a U-shaped and strong cross section is provided horizontally. A front base end portion A of the auxiliary step 33L for getting on and off is fixed to an outer end portion by a bolt, and a rear base end portion B is fixed together with a rear portion of the left step 13L and a front end portion RL of the left fender 14L by a bolt. Thereby, the auxiliary step 33L for getting on and off is protruded below the left side step 13L.
[0012]
A clutch pedal 41 is provided on the left step 13L, while left and right brake pedals 42 and 43, a foot accelerator pedal 44 and the like are provided on the right step 13R.
[0013]
Next, a description will be given, with reference to the accompanying drawings, of an embodiment in which the auxiliary step for mounting the vehicle is mounted on the characteristic portion of the present invention, that is, on the right side step 13R where no special support member for mounting the auxiliary step for mounting the vehicle is provided. .
That is, FIG. 3 is a plan view showing a state in which the auxiliary step 33R for getting on and off is attached to the right step 13R via the support member 51, FIG. 4 is a view taken in the direction of arrow C in FIG. 3, and FIG. FIG.
[0014]
As shown in FIG. 3, the support member 51 is formed by bending a strip-shaped steel plate and forming an L-shaped plate in plan view, and the upper surface of the long side 51 a and the short side 51 b is formed on the lower surface 13 a of the right step 13 R. In a state in which the side surface of the long side 51a is in contact with the bent edge 13b on the outer side of the right side step 13R, that is, the mounting state in which the bending rigidity of the supporting member 51 acts most effectively, The long side 51a is fixed to the edge 13b of the right step 13R using bolts 52, 52 and nuts 53, 53.
[0015]
The auxiliary step 33R for getting on and off is formed by integrally bending a steel plate into a substantially U-shape as shown in FIG. 4, and a side rib 33a and a front side Drawings 33b, 33b are performed near the base end A and the rear base end B, and a plurality of protrusions P for preventing slippage are provided in a step 33c for putting a foot when getting on and off.
[0016]
Then, one side (front side) base end A of the auxiliary step 33R is fixed to the short side 51b of the support member 51 using bolts 54, 54 and nuts 55, 55. The other (rear) base end B is configured to be fastened and fixed together with the step 13R, the fender 14R and the bolts 56,56.
Reference numerals 57, 57 denote P nuts welded to the inside of the bent edge 13c on the rear side of the right step 13R.
[0017]
That is, according to the above-described configuration, the right step 13R without the special support member for attaching the getting-on / off assist step is easily provided via the L-plate-shaped support member 51 having a simple and inexpensive configuration. The auxiliary step 33R for getting on and off can be attached, and when a customer requests that the auxiliary step 33R be attached to the right step 13R, it can be promptly added later to respond.
[0018]
As shown in FIG. 5, when the operator puts the foot F on the auxiliary step 33R for getting on and off, the supporting member 51 is in contact with the lower surface 13a and the edge 13b of the right step 13R, that is, the supporting member 51 Is fixed in a mounting state in which the bending stiffness acts most effectively, so that the bending and torsional moment generated at the front base end portion A of the getting-on / off assisting step 33R at the time of getting on and off can be absorbed.
[0019]
【The invention's effect】
As described above, the present invention is a mounting structure of the auxiliary step 33R for getting on and off which protrudes from the lower side of the step 13R, and fixes the support member 51 in contact with the lower surface 13a and the edge 13b of the step 13R. On the other hand, by fixing at least one side end A of the auxiliary step 33R to the supporting member 51, the supporting member is attached to the step 13R where no special supporting member for attaching the auxiliary step for getting on and off is provided. It is possible to easily attach the auxiliary step 33R for getting on and off via the 51, and if a customer requests to attach the auxiliary step 33R to the step 13R, it can be promptly retrofitted. become.
[Brief description of the drawings]
FIG. 1 is a left side view of an agricultural tractor.
FIG. 2 is a plan view showing a configuration around an operation step.
FIG. 3 is a plan view showing a state in which a getting-on / off assistance step is attached to the right operation step.
FIG. 4 is a view taken in the direction of arrow C in FIG. 3;
FIG. 5 is a sectional view taken along the line DD in FIG. 3;
[Explanation of symbols]
13R Step 13a Lower surface of step 13b Edge 33R of step Auxiliary step for getting on and off 51 Support member 51a One side (long side) of support member
51b Other side (short side) of support member
A Base end of one side (front side) of the auxiliary step for getting on and off

Claims (1)

ステップ(13R)下部側方に突設する乗降用補助ステップ(33R)の取付け構造であって、前記ステップ(13R)の下面(13a)及び縁辺(13b)に接した状態で支持部材(51)を固定する一方、当該支持部材(51)に少なくとも乗降用補助ステップ(33R)の一側基端部(A)を固定することを特徴とする作業車両における乗降用補助ステップの取付け構造。Step (13R): A mounting structure for an auxiliary step for getting on and off (33R) protruding from the lower side, wherein the supporting member (51) is in contact with the lower surface (13a) and the edge (13b) of the step (13R). And a support member (51), and at least a base end (A) of one side of the auxiliary step (33R) is fixed to the support member (51).
JP2003033116A 2003-02-12 2003-02-12 Mounting structure of auxiliary step for getting on and off on working vehicle Pending JP2004243802A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007125931A (en) * 2005-11-01 2007-05-24 Kubota Corp Structure of getting-on/off section of working vehicle
JP2008110724A (en) * 2006-10-31 2008-05-15 Iseki & Co Ltd Working vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007125931A (en) * 2005-11-01 2007-05-24 Kubota Corp Structure of getting-on/off section of working vehicle
JP4634910B2 (en) * 2005-11-01 2011-02-16 株式会社クボタ Getting on and off part structure of the tractor
JP2008110724A (en) * 2006-10-31 2008-05-15 Iseki & Co Ltd Working vehicle

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