JPS5536133A - Automatic opening and closing device of rear flapping door for dump car - Google Patents

Automatic opening and closing device of rear flapping door for dump car

Info

Publication number
JPS5536133A
JPS5536133A JP10781078A JP10781078A JPS5536133A JP S5536133 A JPS5536133 A JP S5536133A JP 10781078 A JP10781078 A JP 10781078A JP 10781078 A JP10781078 A JP 10781078A JP S5536133 A JPS5536133 A JP S5536133A
Authority
JP
Japan
Prior art keywords
hooking
spring
packing box
flapping door
engagement
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
JP10781078A
Other languages
Japanese (ja)
Other versions
JPS5926496B2 (en
Inventor
Tomohiro Nagao
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.)
Kyokuto Kaihatsu Kogyo Co Ltd
Original Assignee
Kyokuto Kaihatsu Kogyo 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 Kyokuto Kaihatsu Kogyo Co Ltd filed Critical Kyokuto Kaihatsu Kogyo Co Ltd
Priority to JP10781078A priority Critical patent/JPS5926496B2/en
Publication of JPS5536133A publication Critical patent/JPS5536133A/en
Publication of JPS5926496B2 publication Critical patent/JPS5926496B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Lock And Its Accessories (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

PURPOSE: To accurately close a flapping door by hooking the hooking pawl which is freely oscillatingly supported on a packing box side using the push member with a spring and releasing the engagement using the second spring.
CONSTITUTION: When the packing case 2 is dumped backward, the pushing member 8 is lifted by the force of the first spring 12 together with the packing box. Until the nut 15 and the guide cylinder 9 make contact with each other, the working section 6 and the pushing member 8 make contact. The engagement of the hooking pawl 6 and the hooking member 7 are maintained and subsequently the push member 8 and the working section 6 are separated. When the hooking pawl 6 turns counterclockwise by the second spring 14, its engagement against the hooking member 7 is disengaged and the rear flapping door is released. Then, as the packing box 2 is let to fall, the working section 6 makes contact with the push member 8 and the hooking pawl turn clockwise. Also, the hanging section 6' engages with the hooking member and the rear flapping door 5 closes. Then, the push member 8 is let to fall and the packing box 1 is fixed on the frame.
COPYRIGHT: (C)1980,JPO&Japio
JP10781078A 1978-09-01 1978-09-01 Dump truck rear door automatic opening/closing device Expired JPS5926496B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10781078A JPS5926496B2 (en) 1978-09-01 1978-09-01 Dump truck rear door automatic opening/closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10781078A JPS5926496B2 (en) 1978-09-01 1978-09-01 Dump truck rear door automatic opening/closing device

Publications (2)

Publication Number Publication Date
JPS5536133A true JPS5536133A (en) 1980-03-13
JPS5926496B2 JPS5926496B2 (en) 1984-06-28

Family

ID=14468601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10781078A Expired JPS5926496B2 (en) 1978-09-01 1978-09-01 Dump truck rear door automatic opening/closing device

Country Status (1)

Country Link
JP (1) JPS5926496B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163369U (en) * 1982-04-26 1983-10-31 岐阜車体工業株式会社 Tailgate fixing device for vehicle loading platform
US6238167B1 (en) * 1999-03-19 2001-05-29 Caterpillar S.A.R.L. Over-center ejector blade lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163369U (en) * 1982-04-26 1983-10-31 岐阜車体工業株式会社 Tailgate fixing device for vehicle loading platform
US6238167B1 (en) * 1999-03-19 2001-05-29 Caterpillar S.A.R.L. Over-center ejector blade lock

Also Published As

Publication number Publication date
JPS5926496B2 (en) 1984-06-28

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