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GB1342526A - Grabbing apparatus - Google Patents

Grabbing apparatus

Info

Publication number
GB1342526A
GB1342526A GB1757171A GB1757171A GB1342526A GB 1342526 A GB1342526 A GB 1342526A GB 1757171 A GB1757171 A GB 1757171A GB 1757171 A GB1757171 A GB 1757171A GB 1342526 A GB1342526 A GB 1342526A
Authority
GB
United Kingdom
Prior art keywords
spool
valve
port
push rod
hydraulic circuit
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
Application number
GB1757171A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1342526A publication Critical patent/GB1342526A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Manipulator (AREA)
  • Paper (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

1342526 Valves HITACHI Ltd 27 May 1971 [12 June 1970] 17571/71 Heading F2V [Also in Division B8] A position pilot pressure valve 17 forms part of a hydraulic circuit, Fig. 3 (not shown) for producing pivotal movement of an arm (12) mounted on one of the grabbing members (11), Fig. 2 (not shown) of lumber grabbing apparatus, said valve 17 comprising a casing 22 in which are formed parts 22a, 22b which are connected respectively to pressurized fluid pipes (32) (31), a valve spool 23 being displaceable in the valve 17 by means of a push rod 24, a spring 25 being provided between the push rod 24 and the spool 23, such that when the spool 23 is moved downwards by pushing the rod 24 communication between the ports 22a, 22b is opened. At a later stage in the operation of the above-mentioned hydraulic circuit, the push rod 24 is released to return the spool to the position shown in Fig. 4 and pressurized fluid is forced through pipe (32) and passes through port 22a and passage 29 in the spool 23 into a chamber 28, thus raising the spool 23 to establish communication between the port 22a and a port 22c which communicates with a fluid tank.
GB1757171A 1970-06-12 1971-05-27 Grabbing apparatus Expired GB1342526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45050318A JPS4923180B1 (en) 1970-06-12 1970-06-12

Publications (1)

Publication Number Publication Date
GB1342526A true GB1342526A (en) 1974-01-03

Family

ID=12855540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1757171A Expired GB1342526A (en) 1970-06-12 1971-05-27 Grabbing apparatus

Country Status (7)

Country Link
US (1) US3727968A (en)
JP (1) JPS4923180B1 (en)
CA (1) CA948672A (en)
DE (1) DE2128712C3 (en)
FR (1) FR2095208B1 (en)
GB (1) GB1342526A (en)
NO (1) NO132471C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105986542A (en) * 2016-07-22 2016-10-05 徐州徐工筑路机械有限公司 Full-automatic hydraulic grab loading system and asphalt pavement maintenance vehicle including same

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2226353B1 (en) * 1973-04-18 1977-02-04 Poclain Sa
US4797059A (en) * 1986-11-07 1989-01-10 General Motors Corporation Seat handling fixture
US5066189A (en) * 1990-08-03 1991-11-19 Shell Material Handling Systems, Inc. Method and apparatus for handling discrete cargo units
US6695120B1 (en) * 2000-06-22 2004-02-24 Amkor Technology, Inc. Assembly for transporting material
US6889813B1 (en) 2000-06-22 2005-05-10 Amkor Technology, Inc. Material transport method
US7673918B2 (en) * 2005-03-11 2010-03-09 Kenco Corporation Self-opening tong lifting device
JP4918004B2 (en) * 2006-11-24 2012-04-18 パナソニック株式会社 Multi-fingered robot hand
AU2013203829A1 (en) * 2012-09-25 2014-04-10 A Ward Attachments Limited Hydraulic grapple
CN104860193B (en) * 2015-05-20 2017-01-25 中国有色（沈阳）冶金机械有限公司 A Grab Device for Horizontal Fishing
CN107381342A (en) * 2016-05-17 2017-11-24 湖南工业大学 A kind of design method for realizing aluminium electroloysis slag grabbing bottom translation
US11644375B2 (en) * 2020-09-03 2023-05-09 GM Global Technology Operations LLC Insertion force measurement system
CN114104946A (en) * 2021-09-26 2022-03-01 杭叉集团股份有限公司 A double-drive electric forklift drive unit auxiliary installation device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US247829A (en) * 1881-10-04 And ge
US2743954A (en) * 1951-07-16 1956-05-01 Stora Kopparbergs Bergslags Ab Clutching tong

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105986542A (en) * 2016-07-22 2016-10-05 徐州徐工筑路机械有限公司 Full-automatic hydraulic grab loading system and asphalt pavement maintenance vehicle including same
CN105986542B (en) * 2016-07-22 2019-03-01 徐州徐工养护机械有限公司 A kind of fully automatic hydraulic grab bucket feeding system and its asphalt pavement maintanance truck

Also Published As

Publication number Publication date
NO132471B (en) 1975-08-11
CA948672A (en) 1974-06-04
DE2128712C3 (en) 1974-04-18
DE2128712A1 (en) 1971-12-16
FR2095208B1 (en) 1976-03-19
US3727968A (en) 1973-04-17
NO132471C (en) 1975-11-19
FR2095208A1 (en) 1972-02-11
DE2128712B2 (en) 1973-09-20
JPS4923180B1 (en) 1974-06-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee