JPH03227747A - Rear door opening and closing device for dump truck - Google Patents

Rear door opening and closing device for dump truck

Info

Publication number
JPH03227747A
JPH03227747A JP2020560A JP2056090A JPH03227747A JP H03227747 A JPH03227747 A JP H03227747A JP 2020560 A JP2020560 A JP 2020560A JP 2056090 A JP2056090 A JP 2056090A JP H03227747 A JPH03227747 A JP H03227747A
Authority
JP
Japan
Prior art keywords
doors
platform
dump truck
rear door
end part
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.)
Granted
Application number
JP2020560A
Other languages
Japanese (ja)
Other versions
JP2678800B2 (en
Inventor
Hideo Totani
戸谷　秀男
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.)
KOYA KENSETSU KOGYO KK
Original Assignee
KOYA KENSETSU KOGYO KK
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 KOYA KENSETSU KOGYO KK filed Critical KOYA KENSETSU KOGYO KK
Priority to JP2020560A priority Critical patent/JP2678800B2/en
Publication of JPH03227747A publication Critical patent/JPH03227747A/en
Application granted granted Critical
Publication of JP2678800B2 publication Critical patent/JP2678800B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

PURPOSE:To eliminate damage, etc., from rear doors by dividing a rear door into two parts or right and left doors, making it possible for the right and left doors to turn and shift outside both side walls of a load carrying platform, thereby protecting the rear doors from a heavy load when a cargo is unloaded. CONSTITUTION:A rear door covering the rear opening of a load carrying platform 1 of a dump truck is divided into two parts or right and left doors, and with the rear doors 3a, 3b, one base end part is supported by a driven link 11 pivoted 12 on the rear end part of the underside of the floor of the platform 1, and the other base end part is supported by an S-shaped driving link 14 pivoted 15 on the portion near the rear end part of the undersurface of the floor of the platform 1. As the platform 1 is tilted by dumping operations and an arc-shaped slide-turning piece 20 departs from a fixed bar 22, a horizontal shaft 18 is rotated by spring members 24 to open the rear doors 3a, 3b through both links 11, 14 by spring tension of the spring members 24 transmitted to connecting bars 28, and spring tension of spring members 17 and to store these doors outside the right and left side walls 7, 8 of the platform.

Description

【発明の詳細な説明】 Ｕ産業上の利用分野］ 本発明は、ダンプカーのリアドア開閉装置に関し、特に
荷台の後部に荷台が昇降動した際に開閉するリアドアを
有し、土砂、病付等の積荷を運搬するダンプカーのリア
ドア開閉装置に関する。[Detailed Description of the Invention] U Field of Industrial Application] The present invention relates to a rear door opening/closing device for a dump truck, and in particular has a rear door at the rear of a loading platform that opens and closes when the loading platform moves up and down, and prevents soil, sand, disease, etc. This invention relates to a rear door opening/closing device for a dump truck that transports cargo.

「従来の技術」"Conventional technology"

Claims (1)

【特許請求の範囲】 １）二分割された左右のリアドアを荷台の両側壁の外側
にそれぞれ回転移動させることができるように左右のリ
アドアにそれぞれ枢支された駆動および従動リンクと、
前記荷台に回動自在に横架された横軸に固定的に設けら
れ、かつ、荷台が少なくとも水平状態の時台車側の固定
棒と当接して回転が阻止されるスライド、回動片とを備
え、前記左右のリアドアは閉鎖時前記駆動リンクに取付
けられた第１のバネ部材で常時開放方向に引っ張られて
いる反面、駆動リンクは前記横軸と駆動リンクの間に設
けられた連結棒を介して回転しないようにロックされて
いることを特徴とするダンプカーのリアドア開閉装置。 ２）左右のリアドアの閉鎖時スライド回動片は第２のバ
ネ部材で常時一方向に引つ張られていることを特徴とす
る請求項１記載のダンプカーのリアドア開閉装置。[Scope of Claims] 1) Driving and driven links pivotally supported on the left and right rear doors, respectively, so that the left and right rear doors, which are divided into two, can be rotated to the outside of both side walls of the loading platform, respectively;
A slide and a rotating piece are fixedly provided on a horizontal shaft rotatably supported horizontally on the loading platform, and are prevented from rotating by coming into contact with a fixing rod on the trolley side when the loading platform is at least in a horizontal state. When the left and right rear doors are closed, they are always pulled in the opening direction by a first spring member attached to the drive link, while the drive link is connected to a connecting rod provided between the horizontal shaft and the drive link. A rear door opening/closing device for a dump truck characterized by being locked to prevent rotation through the rear door opening/closing device of a dump truck. 2) The rear door opening/closing device for a dump truck according to claim 1, wherein the slide rotation pieces of the left and right rear doors are always pulled in one direction by a second spring member when the rear doors are closed.
JP2020560A 1990-01-31 1990-01-31 Dump truck rear door opening and closing device Expired - Fee Related JP2678800B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020560A JP2678800B2 (en) 1990-01-31 1990-01-31 Dump truck rear door opening and closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020560A JP2678800B2 (en) 1990-01-31 1990-01-31 Dump truck rear door opening and closing device

Publications (2)

Publication Number Publication Date
JPH03227747A true JPH03227747A (en) 1991-10-08
JP2678800B2 JP2678800B2 (en) 1997-11-17

Family

ID=12030548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020560A Expired - Fee Related JP2678800B2 (en) 1990-01-31 1990-01-31 Dump truck rear door opening and closing device

Country Status (1)

Country Link
JP (1) JP2678800B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0567518U (en) * 1992-02-24 1993-09-07 株式会社北村製作所 Lorry door device
JP6178955B1 (en) * 2017-03-02 2017-08-09 西田　稔 Grip panel fixture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110884575B (en) * 2019-11-21 2021-01-19 芜湖乐创电子科技有限公司 Unloading protection device of square stone transport vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174948A (en) * 1974-12-26 1976-06-29 Nihon Radiator Co ARUMINIUMUNETSU KOKANKINO SEIZOHOHO
JPS58218434A (en) * 1982-06-09 1983-12-19 Shin Meiwa Ind Co Ltd Device for automatically opening and closing rear flap door of dump car
JPS615315U (en) * 1984-06-18 1986-01-13 ヤンマーディーゼル株式会社 Internal combustion engine exhaust system
JPS6164543A (en) * 1984-09-04 1986-04-02 Kyokuto Kaihatsu Kogyo Co Ltd Device for opening and closing rear door of dump truck

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174948A (en) * 1974-12-26 1976-06-29 Nihon Radiator Co ARUMINIUMUNETSU KOKANKINO SEIZOHOHO
JPS58218434A (en) * 1982-06-09 1983-12-19 Shin Meiwa Ind Co Ltd Device for automatically opening and closing rear flap door of dump car
JPS615315U (en) * 1984-06-18 1986-01-13 ヤンマーディーゼル株式会社 Internal combustion engine exhaust system
JPS6164543A (en) * 1984-09-04 1986-04-02 Kyokuto Kaihatsu Kogyo Co Ltd Device for opening and closing rear door of dump truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0567518U (en) * 1992-02-24 1993-09-07 株式会社北村製作所 Lorry door device
JP6178955B1 (en) * 2017-03-02 2017-08-09 西田　稔 Grip panel fixture

Also Published As

Publication number Publication date
JP2678800B2 (en) 1997-11-17

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