JPH0623204Y2 - Towing type agricultural work machine connecting device - Google Patents
Towing type agricultural work machine connecting deviceInfo
- Publication number
- JPH0623204Y2 JPH0623204Y2 JP7383389U JP7383389U JPH0623204Y2 JP H0623204 Y2 JPH0623204 Y2 JP H0623204Y2 JP 7383389 U JP7383389 U JP 7383389U JP 7383389 U JP7383389 U JP 7383389U JP H0623204 Y2 JPH0623204 Y2 JP H0623204Y2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- vertical frame
- work machine
- horizontal frame
- agricultural work
- 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.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 41
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
Landscapes
- Agricultural Machines (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、トラクター等の牽引車に牽引されるビートハ
ーベスタ、ポテトハーベスタなどの牽引型農作業機を牽
引車に連結するための装置の改良に関する。TECHNICAL FIELD The present invention relates to an improvement of a device for connecting a towed agricultural work machine such as a beat harvester or a potato harvester, which is towed by a tow vehicle such as a tractor, to the tow vehicle.
従来技術と問題点 従来から広く使用されている牽引型農作業機の連結装置
として、第４図，第５図，第６図に示すようなものがあ
る。この連結装置は、農作業機の牽引フレーム（７′）
の前部において前斜下向の縦フレーム（１′）を左右回
動自在に備え、その縦フレームの上端部にブラケット
（２′）を前向に突設し、かつ縦フレーム（１′）の下
端部に横フレーム（３′）の後端部を軸着し、単動型油
圧シリンダー（４′）の上部を前記ブラケット（２′）
に軸着すると共に、その油圧シリンダーの下部を前記横
フレーム（３′）の長手方向中程に軸着し、縦フレーム
（１′）の前方において縦フレーム（１′）と略平行に
単動型油圧シリンダー（４′）を配し、上記横フレーム
（３′）の前端部をリンクボール（８′）を介してトラ
クターのドローバー（９′）に連結し、さらにトラクタ
ーから動力を伝達するためのＰＴＯジョイント軸（1
0′）が前記縦フレーム（１′）及び単動型油圧シリン
ダー（４′）の側方に配置された構成である。2. Related Art and Problems As a connecting device for a towing type agricultural working machine which has been widely used from the past, there is one as shown in FIGS. 4, 5, and 6. This connecting device is used for the towing frame (7 ') of the agricultural work machine.
A vertical frame (1 ') with a forward slanting downward direction is rotatably provided at the front of the vertical frame, and a bracket (2') is provided at the upper end of the vertical frame so as to project forward, and the vertical frame (1 ') is also provided. The rear end of the horizontal frame (3 ') is axially attached to the lower end of the bracket, and the upper portion of the single-acting hydraulic cylinder (4') is attached to the bracket (2 ').
And the lower part of the hydraulic cylinder is axially mounted in the middle of the horizontal frame (3 ') in the longitudinal direction, and is single-acted in front of the vertical frame (1') substantially parallel to the vertical frame (1 '). Type hydraulic cylinder (4 ') for connecting the front end of the lateral frame (3') to the drawbar (9 ') of the tractor via the link ball (8'), and for transmitting power from the tractor. PTO joint shaft (1
0 ') is arranged laterally of the vertical frame (1') and the single-acting hydraulic cylinder (4 ').
この連結装置は、構造が比較的簡単なことにより、製作
及び保守管理に便利なため、広く普及しているのである
が、農作業中において、第４図示の直進時に問題はない
ものの、第６図示の右旋回した時に前記単動型油圧シリ
ンダー（４′）に前記ＰＴＯジョイント軸（10′）が接
触するという事故の起きることがあり、この事故の解消
が求められている。This connecting device is widely used because it has a relatively simple structure and is convenient for production and maintenance. However, during agricultural work, there is no problem when going straight as shown in FIG. 4, but as shown in FIG. There is a case where the PTO joint shaft (10 ') comes into contact with the single-acting hydraulic cylinder (4') when the vehicle turns right, and it is required to eliminate this accident.
このように農作業機側に備えられた連結部材と、ＰＴＯ
ジョイント軸との接触事故を防止するためのけん引装置
が提案されて広く知られている（実公昭63-42007号公報
参照）。In this way, the connecting member provided on the farm work machine side and the PTO
A traction device for preventing a contact accident with a joint shaft has been proposed and widely known (see Japanese Utility Model Publication No. 63-42007).
このけん引装置は、要約すると、農作業機のけん引フレ
ーム前部中央に備えた水平旋回体及び前後傾動体の中央
部にＰＴＯジョイント軸を配し、そのジョイント軸の上
方に単動形油圧シリンダーを、下方にヒッチバーを夫々
備えた構成である。In summary, this towing device has a PTO joint shaft arranged in the center of a horizontal swinging body and a front and rear tilting body provided in the front center of a towing frame of an agricultural work machine, and a single-acting hydraulic cylinder above the joint shaft. It has a structure in which a hitch bar is provided below each.
かかるけん引装置は、ＰＴＯジョイント軸が農作業機の
けん引フレーム前部中央部位に配設される構造となるた
め、農作業中に急旋回しても、ＰＴＯジョイント軸がど
こにも接触しないという利点を有する。しかし、構造が
複雑になるため、製作に手間がかかり、保守管理が大変
である。Since such a towing device has a structure in which the PTO joint shaft is arranged at the central portion of the front part of the towing frame of the agricultural work machine, it has an advantage that the PTO joint shaft does not come into contact with any part even when it suddenly turns during agricultural work. However, since the structure is complicated, it takes time and effort to manufacture and maintenance is difficult.
本考案は、かかる諸事情に鑑みてなしたもので、農作業
中に急旋回しても、農作業機側に備えられた連結部材と
ＰＴＯジョイント軸とが接触事故を起すことがなく、か
つ構造簡単にして製作及び保守管理に便利な連結装置の
提供を目的とする。The present invention has been made in view of such circumstances, and even if a sharp turn is made during agricultural work, the connecting member provided on the agricultural machine side does not cause a contact accident with the PTO joint shaft, and the structure is simple. The purpose of the present invention is to provide a connecting device that is convenient for production and maintenance.
問題点解決のための手段 上記目的を達成するために本考案がなした手段は、農作
業機の牽引フレーム前部において前斜下向に設けた縦フ
レームの上端部と、その縦フレームの下端部に軸着され
て牽引フレーム側に後端部が突出せる横フレームの後端
部とにわたって流体圧シリンダーの上下両端部を軸着
し、そのシリンダーを後斜下向に配設して縦フレームと
交差配置せしめ、さらにその縦フレームの側方にＰＴＯ
ジョイント軸を配設したということである。Means for Solving Problems The means provided by the present invention for achieving the above-mentioned object are an upper end portion of a vertical frame provided in a forward oblique downward direction at a front portion of a towing frame of an agricultural work machine, and a lower end portion of the vertical frame. Both the upper and lower ends of the fluid pressure cylinder are axially attached to the rear end of the horizontal frame that is pivotally attached to the traction frame and the rear end of the horizontal frame is projected. They are arranged in a cross shape, and the PTO is placed on the side of the vertical frame.
It means that a joint shaft is provided.
作用 流体圧シリンダーの下部圧力流体出入口から圧力流体を
注入すれば、流体圧シリンダーが縮み、縦フレームと横
フレームとの軸着部を支点として農作業機の前部が上昇
し、注入した圧力流体を抜取れば、上昇した農作業機の
重量により、流体圧シリンダーが伸び、同時に縦フレー
ムと横フレームとの軸着部を支点として農作業機が下降
し、掘取り部材，拾上げ部材などの深度，高さ位置など
が調節される。流体圧シリンダー下部と横フレーム後端
部との軸着部が縦フレームと横フレームとの軸着部（上
記支点）よりも農作業機側に偏して配置されることによ
り、縦フレーム側方のＰＴＯジョイント軸が農作業機の
近くで縦フレームと交差するにとどまり、縦フレーム及
び流体圧シリンダーの前方における横フレームの上方に
十分余裕のある空間が形成される。Action If pressure fluid is injected from the lower pressure fluid inlet / outlet of the fluid pressure cylinder, the fluid pressure cylinder contracts, and the front part of the agricultural work machine rises with the pivotal joint between the vertical frame and the horizontal frame as the fulcrum. If removed, the weight of the farm work machine rises, the fluid pressure cylinder expands, and at the same time, the farm work machine descends with the pivotal joint between the vertical frame and the horizontal frame as the fulcrum, and the depth and height of the excavation member, pick-up member, etc. are increased. The position is adjusted. The lower part of the fluid pressure cylinder and the rear end of the horizontal frame are located closer to the agricultural machine than the vertical frame and the horizontal frame (the above-mentioned fulcrum). The PTO joint axis only intersects the vertical frame near the agricultural machine, forming a sufficiently large space above the horizontal frame in front of the vertical frame and the hydraulic cylinder.
実施例 縦フレーム（１）は、ポテトハーベスタ，ビートハーベ
スタなどの牽引型農作業機の牽引フレーム（７）の前部
に軸(11)及びブラケット(12)で左右回動自在に軸着さ
れ、牽引フレーム（７）との間にわたって架設された複
動型流体圧シリンダー(13)の作動で軸(11)を中心にして
左右に回動する。縦フレーム（１）は、牽引フレーム
（７）の前部において、下部に至るに従って次第に前方
へ突出する如く前斜下向に設けられ、上端部に流体圧シ
リンダー用のブラケット（２）が前向きに突設され、下
端部に横フレーム（３）の後端部寄りの中間部位が軸着
される。横フレーム（３）は、後端部寄りの中間部位を
縦フレーム（１）の下端に軸(13)で軸着し、後端部を軸
着部よりも牽引フレーム（７）側に突出配置せしめ、前
端部をリンクボール（８）でトラクター（不図示）のド
ローバー（９）に連結し、リンクボール（８）を中心に
して左右旋回と上下回動とを行ない得るように構成する
と共に、縦フレーム（１）との軸着部、即ち軸(13)を支
点にして農作業機が上昇下降し得るように構成する。流
体圧シリンダー（４）は、オイル或はエアーを圧力流体
として使用する油圧シリンダー或はエアシリンダーであ
り、複動型シリンダーを改造して構成してなる。流体圧
シリンダー（４）は、複動型油圧シリンダーが有する２
つの圧力流体出入口のうち、図面で上部の上部圧力流体
出入口に、シリンダー方向に向ってばねで弾圧される球
弁を内部に有する排気栓（不図示）を取付け、シリンダ
ー内上部の溜空気の排出可能なるも外部の空気が流入不
可能な排気口（５）に構成し、図で下部の下部圧力流体
出入口（６）に注入ホース(14)をつなぎ、下部圧力流体
出入口（６）から圧力流体を注入すると、排気口（５）
から圧力流体注入量に等しい量の溜空気が排出され、注
入圧力流体を抜取ると、シリンダー内上部が真空になる
ように構成し、圧力流体の注入と抜取りとを短時分に能
率よく行ない得るように構成すると共に、確実に作動す
るように構成する。流体圧シリンダー（４）は、排気口
（５）が上部となるように上部をブラケット（２）に軸
着し、下部（詳しくは、下向ピストンロッド先端部）を
横フレーム（３）の後端部に軸着せしめ、その横フレー
ムとの軸着部を縦フレーム（１）と横フレーム（３）と
の軸着部、即ち軸(13)よりも牽引フレーム（７）側（農
作業機側）に偏して配置せしめる。流体圧シリンダー
（４）は、上記のように配設されると、下部へ至るに従
って次第に後方へ突出して後斜下向に設けられ、ＰＴＯ
ジョイント軸(10)と直接交差せず、側方から視て前斜下
向の縦フレーム（１）と交差し、その縦フレーム前方及
び流体圧シリンダー自体の前方における横フレーム
（３）上になに物もなくなり、十分に余裕のある空間が
形成され、右旋回時にＰＴＯジョイント軸(10)と連結部
材との接触事故が防止される。流体圧シリンダー（４）
は、自体の下部と横フレーム（３）の後端部との軸着部
が、縦フレーム（１）と横フレーム（３）との軸着部
（軸(13)）よりも農作業機側に偏していること、及び下
部圧力流体出入口（６）から圧力流体を出入れするよう
にしていることにより、圧力流体を注入すると縮み、縦
フレーム（１）と横フレーム（３）との軸着部（軸(1
3)）を支点として農作業機を上昇せしめ、掘取り部材，
拾上げ部材などの深度，高さ位置などが調節される。そ
して、注入した圧力流体を抜取れば、上昇した農作業の
重量により、流体圧シリンダー（４）が伸び、同時に縦
フレーム（１）と横フレーム（３）との軸着部（軸(1
3)）を支点として農作業機が下降し、掘取り部材，拾上
げ部材などの深度，高さ位置など調節される。リンクボ
ール（８）は、横フレーム（３）をトラクター（不図
示）のドローバー（９）に連結するための周知の部材で
あると共に、農作業中の左右旋回及び上下回動を自在な
らしめるための周知の部材であり、ドローバー（９）
と、このドローバー上に平行配設される押えバー(15)と
の間に配置する。ドローバー（９）は、不図示のトラク
ターに固定された連結部材であり、農作業機側の上面に
リンクボール（８）を配置し、反対側のトラクター側上
面にスペーサー(16)を配置し、リンクボール（８）上及
びスペーサー(16)上に押えバー(15)を配置した後、その
押えバーからスペーサー(16)にボルトを貫通せしめ、ナ
ットを螺合して押えバー(15)を脱着可能に取付け、リン
クボール（８）の離脱を防止し得るように構成する。ド
ローバー（９）に押えバー(15)を脱着可能に取付けたの
は、農作業機の前側を上昇せしめ、掘取り部材，拾上げ
部材などを地面に接触せしめない状態で路上を移動せし
めるのに、現在使用されているトラクター（不図示）で
は問題があるからである。現在使用されているトラクタ
ーは、規格（地面を基準にしたドローバーの高さ位置、
ドローバーと押えバーとの高さ間隔等）がまちまちで統
一されていないため、農作業機の前側を上昇せしめる
と、横フレーム（３）とリンクボール（８）との取付部
が上方回動した時に押えバー(15)の農作業機側端部の下
角に接触し、横フレーム（３）とリンクボール（８）と
の取付部を損傷せしめている。このような問題を解決す
るために周知の側面 形押えバーの形状を変え、かつ周知のボルトのみによる
押えバー取付手段を工夫し、前記した如くスペーサー(1
6)及びボルト・ナットにより押えバー(15)を脱着可能に
ドローバー（９）に取付ければ、スペーサー(16)及びボ
ルトを長いものに変えて再び取付けるだけで、ドローバ
ー（９）と押えバー(15)との高さ間隔を長くすることが
可能になり、これに伴なってリンクボール（８）を大き
いものに変えれば、リンクボール取付部を押えバー(15)
に接触せしめる心配少なく上方回動角度を大きくするこ
とが可能になる。このように改良することは、現在使用
されている前記トラクターのドローバー（９）をそのま
ま利用して行ない得るので、前記トラクターに容易に実
施し得ることとなる。ＰＴＯジョイント軸(10)は、トラ
クター側のＰＴＯ(17)及び農作業機側のＰＴＯ(18)に夫
々自在継手(19)を介して両端部を連結し、トラクターの
動力が農作業機に伝動されて農作業機が作動するように
構成する。ＰＴＯジョイント軸(10)は、ドローバー
（９）の上方に配置されたトラクター側ＰＴＯ(17)に連
結され、縦フレーム（１）の側方に配置して農作業機Ｐ
ＴＯ(18)に連結し、前記た流体圧シリンダー（４）の後
斜下向配設構造によって、農作業機の近くで縦フレーム
（１）と交差するのみにとどめ、右旋回時に農作業機側
の連結部材に接触しないように構成する。Example A vertical frame (1) is rotatably pivoted to the left and right by a shaft (11) and a bracket (12) on the front part of a tow frame (7) of a tow type agricultural work machine such as a potato harvester and a beat harvester, and is towed. The double-acting fluid pressure cylinder (13) installed over the frame (7) rotates left and right about the shaft (11). The vertical frame (1) is provided in the front part of the tow frame (7) in a forward oblique downward direction so as to gradually project forward as it reaches the lower part, and the bracket (2) for the fluid pressure cylinder is directed forward in the upper end part. The lateral frame (3) is provided with an intermediate portion near the rear end of the horizontal frame (3) at the lower end. The horizontal frame (3) has an intermediate portion near the rear end portion axially attached to the lower end of the vertical frame (1) by a shaft (13), and the rear end portion is disposed so as to project to the traction frame (7) side with respect to the axial attachment portion. The front end is connected to the drawbar (9) of the tractor (not shown) by the link ball (8) so that the link ball (8) can be turned horizontally and vertically. The agricultural work machine is configured to be able to move up and down by using a shaft attachment portion with the vertical frame (1), that is, a shaft (13) as a fulcrum. The fluid pressure cylinder (4) is a hydraulic cylinder or an air cylinder that uses oil or air as a pressure fluid, and is constructed by modifying a double-acting cylinder. The fluid pressure cylinder (4) has a double-acting hydraulic cylinder 2
Of the two pressure fluid inlets and outlets, an exhaust plug (not shown) internally having a ball valve that is elastically pressed by a spring toward the cylinder is attached to the upper pressure fluid inlet and outlet in the drawing to discharge the accumulated air in the upper portion of the cylinder. The exhaust port (5) is configured so that outside air cannot flow in, but an injection hose (14) is connected to the lower pressure fluid inlet / outlet (6) at the bottom of the figure, and the pressure fluid is supplied from the lower pressure fluid inlet / outlet (6). Inject the exhaust port (5)
The amount of stored air equal to the injection amount of pressure fluid is discharged from, and when the injection pressure fluid is extracted, the upper part of the cylinder is configured to be a vacuum, and the injection and extraction of the pressure fluid can be performed efficiently in a short time. It is configured to obtain and to operate reliably. The fluid pressure cylinder (4) has its upper part pivotally mounted on the bracket (2) so that the exhaust port (5) is located at the upper part, and the lower part (specifically, the downward piston rod tip part) is located behind the horizontal frame (3). The end is axially attached, and the axial frame and the horizontal frame are attached to the vertical frame (1) and the horizontal frame (3), that is, to the traction frame (7) side (agricultural machine side) than the shaft (13). ). When the fluid pressure cylinder (4) is arranged as described above, the fluid pressure cylinder (4) gradually protrudes rearward as it reaches the lower portion, and is provided in a rearward oblique downward direction.
It does not directly intersect with the joint axis (10) but intersects with the vertical frame (1) that is inclined forward and downward when viewed from the side, and is on the horizontal frame (3) in front of the vertical frame and in front of the fluid pressure cylinder itself. Since there is no object left, a sufficiently large space is formed, and a contact accident between the PTO joint shaft (10) and the connecting member is prevented when turning right. Fluid pressure cylinder (4)
Is closer to the farming machine than the vertical frame (1) and horizontal frame (3) are axially connected to the bottom of itself and the rear end of the horizontal frame (3). Due to the unevenness and the pressure fluid entering and exiting through the lower pressure fluid inlet / outlet (6), it contracts when the pressure fluid is injected, and the vertical frame (1) and the horizontal frame (3) are axially attached. Part (axis (1
3)) is used as a fulcrum to raise the agricultural work machine,
The depth and height position of the pick-up member etc. are adjusted. Then, when the injected pressure fluid is extracted, the fluid pressure cylinder (4) expands due to the increased weight of the agricultural work, and at the same time, the shaft attachment portion (shaft (1) of the vertical frame (1) and the horizontal frame (3) is
3)) is used as a fulcrum to lower the agricultural machine and adjust the depth and height position of the excavation member and pick-up member. The link ball (8) is a well-known member for connecting the horizontal frame (3) to the drawbar (9) of the tractor (not shown), and also for freely swinging horizontally and vertically during agricultural work. It is a well-known member and drawbar (9)
And a holding bar (15) arranged in parallel on the draw bar. The drawbar (9) is a connecting member fixed to a tractor (not shown). The link ball (8) is arranged on the upper surface of the farm work machine side, and the spacer (16) is arranged on the upper surface of the tractor side opposite to the link bar. After arranging the presser bar (15) on the ball (8) and the spacer (16), the bolt can be inserted from the presser bar to the spacer (16) and the nut can be screwed to attach and detach the presser bar (15). The link ball (8) can be prevented from coming off. The presser bar (15) is detachably attached to the drawbar (9) so that the front side of the agricultural work machine can be raised and the excavation member, the pick-up member, etc. can be moved on the road without touching the ground. This is because there are problems with the tractors (not shown) currently used. Currently used tractors are standard (drawbar height position relative to the ground,
The height between the drawbar and the presser bar is not uniform, so if you raise the front side of the farm work machine, the horizontal frame (3) and the link ball (8) will rotate upward when they are attached. It comes into contact with the lower corner of the end of the holding bar (15) on the side of the agricultural work machine, and damages the attachment portion of the horizontal frame (3) and the link ball (8). Known aspects to solve such problems By changing the shape of the presser bar and devising a presser bar attachment means using only known bolts, the spacer (1
6) and bolts and nuts can be used to attach the retaining bar (15) to the drawbar (9) in a removable manner, simply replace the spacer (16) and the bolt with a longer one, and then attach them again. It becomes possible to lengthen the height interval with 15), and if the link ball (8) is changed to a larger one along with this, the link ball mounting part will be the holding bar (15).
It is possible to increase the upward rotation angle without worrying about contact with the. Such improvement can be carried out on the tractor easily because the drawbar (9) of the tractor currently used can be used as it is. The PTO joint shaft (10) connects both ends to the PTO (17) on the tractor side and the PTO (18) on the agricultural work machine side through universal joints (19) respectively, and the power of the tractor is transmitted to the agricultural work machine. Configure the farm work machine to operate. The PTO joint shaft (10) is connected to the tractor side PTO (17) arranged above the drawbar (9) and is arranged on the side of the vertical frame (1) so that the agricultural work machine P can be installed.
The fluid pressure cylinder (4) is connected to the TO (18), and the fluid cylinder (4) is arranged obliquely downward to the rear so that it only intersects with the vertical frame (1) near the farm machine, and the farm machine side when turning right. It is configured so as not to come into contact with the connecting member of.
考案の効果 本考案は、叙上のように構成したので、流体圧シリンダ
ーがスムーズに伸縮せしめられることにより、縦フレー
ムと横フレームとの軸着部を支点として農作業機がスム
ーズに上昇下降して掘取り部材，拾上げ部材などの深
度，高さ位置などが調節される利点を有するのである
が、就中、流体圧力シリンダー下部と横フレーム後端部
との軸着部が、縦フレームと横フレームとの軸着部（支
点）よりも農作業機の牽引フレーム側に偏して配置され
ていることにより、縦フレーム側方のＰＴＯジョイント
軸が農作業機の近くで縦フレームと交差するにとどま
り、縦フレーム及び流体圧シリンダーの前方における横
フレーム上に十分余裕のある空間が形成され、右旋回す
る場合、農作業機側に備えられた連結部材にＰＴＯジョ
イント軸が接触するという事故が発生しない効果があ
る。Effect of the Invention Since the present invention is configured as described above, the fluid pressure cylinder can be smoothly expanded and contracted, so that the agricultural work machine can be smoothly moved up and down with the shaft attachment portion of the vertical frame and the horizontal frame as a fulcrum. It has the advantage of adjusting the depth and height position of the excavating member, picking-up member, etc., but above all, the axial joint between the lower part of the fluid pressure cylinder and the rear end of the horizontal frame is the vertical frame and the horizontal frame. The PTO joint shaft on the side of the vertical frame only crosses the vertical frame near the agricultural work machine because the PTO joint shaft on the side of the vertical frame is located closer to the towing frame side of the agricultural work machine than the shaft-attached portion (fulcrum) with the frame. When a space with a sufficient margin is formed on the horizontal frame in front of the vertical frame and the fluid pressure cylinder, and when turning right, the PTO joint shaft is connected to the connecting member provided on the farm work machine side. It has the effect of preventing accidents when touching.
従って、農作業機側に備えられた連結部材にＰＴＯジョ
イント軸が接触しない構造簡単にして製作及び保守管理
に便利な連結装着を提供できる。Therefore, the structure in which the PTO joint shaft does not come into contact with the connecting member provided on the agricultural working machine side can be simplified, and the connecting mounting convenient for manufacturing and maintenance can be provided.
第１図は本考案連結装置の直進時を示す平面図、第２図
はその側面図、第３図は右旋回時を示す平面図、第４図
は従来技術の直進時を示す平面図、第５図はその側面
図、第６図は右旋回時を示す平面図である。 図中、 （１）…縦フレーム （２）…ブラケット （３）…横フレーム （４）…流体圧シリンダー （５）…排気口 （６）…下部圧力流体出入口 （７）…農作業機の牽引フレーム （８）…リンクボール （９）…ドローバー (10)…ＰＴＯジョイント軸FIG. 1 is a plan view showing the straightening device of the coupling device of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view showing a right turn, and FIG. FIG. 5 is a side view thereof, and FIG. 6 is a plan view showing the state of turning right. In the figure, (1) ... Vertical frame (2) ... Bracket (3) ... Horizontal frame (4) ... Fluid pressure cylinder (5) ... Exhaust port (6) ... Lower pressure fluid inlet / outlet (7) ... Agricultural machine towing frame (8)… Link ball (9)… Drawbar (10)… PTO joint shaft
Claims (1)
牽引フレーム前部において前斜下向の縦フレームを左右
回動自在に設け、該縦フレームの上端部にブラケットを
前向に突設し、かつ該縦フレームの下端部に横フレーム
の後端部寄り部位を軸着し、その横フレームの後端部を
縦フレームよりも牽引フレーム側に突出せしめ、上部圧
力流体出入口を排気口となし、かつ下部圧力流体出入口
から圧力流体を出入れする流体圧シリンダーの上部を前
記ブラケットに軸着すると共に、そのシリンダーの下部
を前記横フレームの後端部に軸着せしめ、上記シリンダ
ーを後斜下向に配設して縦フレームと交差配置し、前記
横フレームの前端部をリンクボールを介してトラクター
のドローバーに連結し、さらに前記縦フレームの側方に
ＰＴＯジョイント軸を配設した牽引型農作業機の連結装
置。1. A vertical frame with a forward oblique downward direction is provided in a front part of a tow frame of an agricultural work machine to which power of a tractor is transmitted so as to be rotatable left and right, and a bracket is provided so as to project forward at an upper end of the vertical frame. Also, a portion of the vertical frame near the rear end of the horizontal frame is pivotally attached to the lower end of the vertical frame, and the rear end of the horizontal frame is projected toward the traction frame rather than the vertical frame, and the upper pressure fluid inlet / outlet serves as an exhaust port. , And the upper part of the fluid pressure cylinder that inputs and outputs the pressure fluid from the lower pressure fluid inlet / outlet is pivotally attached to the bracket, and the lower portion of the cylinder is pivotally attached to the rear end portion of the horizontal frame, and the cylinder is slanted backward. The horizontal frame and the vertical frame are crossed with each other, the front end of the horizontal frame is connected to the drawbar of the tractor via a link ball, and a PTO joint is provided on the side of the vertical frame. Coupling device of the traction type agricultural machine were provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7383389U JPH0623204Y2 (en) | 1989-06-23 | 1989-06-23 | Towing type agricultural work machine connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7383389U JPH0623204Y2 (en) | 1989-06-23 | 1989-06-23 | Towing type agricultural work machine connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0312711U JPH0312711U (en) | 1991-02-08 |
| JPH0623204Y2 true JPH0623204Y2 (en) | 1994-06-22 |
Family
ID=31612991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7383389U Expired - Lifetime JPH0623204Y2 (en) | 1989-06-23 | 1989-06-23 | Towing type agricultural work machine connecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623204Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026019206A1 (en) * | 2024-07-15 | 2026-01-22 | 엘에스엠트론 주식회사 | Towing device for agricultural tractor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000175801A (en) | 1998-12-17 | 2000-06-27 | Ogawa Tent Co Ltd | Suspending device and suspended member |
| KR200182655Y1 (en) * | 1999-12-16 | 2000-05-15 | 박명화 | Oil pressure movable type check chain for farming machines |
-
1989
- 1989-06-23 JP JP7383389U patent/JPH0623204Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026019206A1 (en) * | 2024-07-15 | 2026-01-22 | 엘에스엠트론 주식회사 | Towing device for agricultural tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312711U (en) | 1991-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4216975A (en) | Tractor hitch | |
| US5136828A (en) | Farm machine which detects an intermediate position of a connecting device | |
| US5423394A (en) | Three point hitch for hummer truck and other vehicles | |
| US4176727A (en) | Devices for automatically coupling implements to self-propelled articles | |
| CA2019317C (en) | Three point hitch for truck | |
| US2347898A (en) | Hitch means for connecting trailers to tractive vehicles | |
| US7784558B2 (en) | Three point hitch | |
| AU4203801A (en) | Articulating hitch assembly | |
| US4606413A (en) | Hydraulic leveler arrangement | |
| US4424982A (en) | Attachment device for a motor vehicle | |
| JPH0623204Y2 (en) | Towing type agricultural work machine connecting device | |
| US2496474A (en) | Vertically swingable extension for tractor drawbars | |
| US4308920A (en) | Ground working implement wherein forward frame portion raised before frame support engages ground | |
| US20040060715A1 (en) | Implement coupler | |
| US3713284A (en) | Sweeper for garden tractor having improved hitch linkage | |
| US2775176A (en) | Combination implement carrier and hitch for tractors | |
| US6352124B1 (en) | Automatic device for all-purpose coupling of agricultural implements and the like | |
| US4163627A (en) | Mounting for an implement on a tractor | |
| CA1269117A (en) | Apparatus for lifting an end of a hitch | |
| US2788227A (en) | Combination hitch and tongue support actuator | |
| JP2005185203A (en) | Drug spraying equipment for mobile agricultural machines | |
| CN108617176A (en) | A kind of tractor Three Degree Of Freedom farm implements suspension mechanism | |
| US2441630A (en) | Trailer hitch | |
| JP3897424B2 (en) | Soil working machine for slurry application | |
| US2761268A (en) | Harvester towing tractor having power-operated traction wheel lifting prop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |