GB1382454A - Grabs - Google Patents
GrabsInfo
- Publication number
- GB1382454A GB1382454A GB829072A GB829072A GB1382454A GB 1382454 A GB1382454 A GB 1382454A GB 829072 A GB829072 A GB 829072A GB 829072 A GB829072 A GB 829072A GB 1382454 A GB1382454 A GB 1382454A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screw
- casing
- bath
- sleeve
- oil bath
- 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
Links
- 238000007789 sealing Methods 0.000 abstract 3
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000009412 basement excavation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N19/00—Lubricant containers for use in lubricators or lubrication systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
1382454 Grab buckets CONSTRUZIONI CEMENTO COMPRESSO FONDISA SpA 23 Feb 1972 [1 March 1971] 8290/72 Addition to 1200575 Heading B8H The nut and screw actuator mechanism of the grab bucket of the grab bucket excavator of Specification 1,200,575 is now housed in an oil bath having a casing formed in two parts of which one part comprises a circular sleeve 4 rigidly fixed to the nut 8 and to the casing 5 of a sealing gland 6 and the other part comprises a sleeve 11 telescopically and rotatably mounted on the sleeve 4 in sealing engagement therewith whilst extending downwards about the threaded portion 1a of the screw 1 to be secured to a closure member 13 supported by a sealing and bearing assembly 12, 14 on the lower end of the screw 1. The closure member 13 is attached to a plate 16 carrying a plate 17 on which the jaws of the bucket are pivoted at 19, 20. At least one of the chambers 7, 7a is connected to an external reservoir having at least one expandable and contractable wall to accommodate oil flowing to and from the bath owing to the pumping effect caused in the bath by rotation of the screw. The oil bath and reservoir can be located within a protective casing axially secured with respect to the oil bath but rotatable thereabout before abutting the casing so that opening or closing of the jaws does not occur immediately the protective casing engages the walls of an excavation, such as a trench, being dug out by the grab bucket.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21195/71A IT987518B (en) | 1971-03-01 | 1971-03-01 | EQUIPMENT FOR EXCAVING HOLES AND TRUNKS OF SIGNIFICANT DEPTH |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1382454A true GB1382454A (en) | 1975-01-29 |
Family
ID=11178196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB829072A Expired GB1382454A (en) | 1971-03-01 | 1972-02-23 | Grabs |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3750770A (en) |
| BE (1) | BE779940R (en) |
| BR (1) | BR7201203D0 (en) |
| CA (1) | CA961510A (en) |
| CH (1) | CH550291A (en) |
| DE (1) | DE2209876A1 (en) |
| ES (1) | ES400972A2 (en) |
| FR (1) | FR2128474B2 (en) |
| GB (1) | GB1382454A (en) |
| IT (1) | IT987518B (en) |
| NL (1) | NL7202530A (en) |
| ZA (1) | ZA721203B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2740101C2 (en) * | 1977-09-06 | 1986-04-24 | Casagrande & C. S.p.A., Fontanafredda | Drilling grapple |
| DE19848792C1 (en) * | 1998-10-22 | 2000-05-04 | Netzsch Mohnopumpen Gmbh | Submersible pump device for use in a borehole |
| ES2280569T3 (en) * | 2001-10-23 | 2007-09-16 | Robert Bosch Gmbh | GEAR DRIVE UNIT WITH ADAPTER. |
| DE102017004270A1 (en) * | 2017-05-03 | 2018-11-08 | Liebherr-Werk Nenzing Gmbh | Diaphragm wall grab with hybrid drive |
| CN112253024B (en) * | 2020-12-08 | 2023-03-24 | 中国石油天然气集团有限公司 | Oil pipe sand removal device and sand removal method for oil and gas well |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1618294A (en) * | 1926-03-30 | 1927-02-22 | Olson Joseph | Underreamer |
| US2203246A (en) * | 1938-11-01 | 1940-06-04 | Estate Of Emil H Zum Berge | Underreamer |
| US2645458A (en) * | 1950-07-29 | 1953-07-14 | Yost Merrill | Hole boring rig |
| US3113629A (en) * | 1960-11-29 | 1963-12-10 | Benoto Sa | Boring apparatus whose opening is adjustable |
| US3194329A (en) * | 1964-06-11 | 1965-07-13 | Calweld Inc | Hydraulic grab bucket |
-
1971
- 1971-03-01 IT IT21195/71A patent/IT987518B/en active
- 1971-11-15 US US00198665A patent/US3750770A/en not_active Expired - Lifetime
-
1972
- 1972-02-23 ZA ZA721203A patent/ZA721203B/en unknown
- 1972-02-23 GB GB829072A patent/GB1382454A/en not_active Expired
- 1972-02-25 NL NL7202530A patent/NL7202530A/xx unknown
- 1972-02-28 BE BE779940A patent/BE779940R/en active
- 1972-02-29 CA CA135,891A patent/CA961510A/en not_active Expired
- 1972-03-01 FR FR7207069A patent/FR2128474B2/fr not_active Expired
- 1972-03-01 CH CH294372A patent/CH550291A/en unknown
- 1972-03-01 ES ES400972A patent/ES400972A2/en not_active Expired
- 1972-03-01 BR BR001203/72*[A patent/BR7201203D0/en unknown
- 1972-03-01 DE DE19722209876 patent/DE2209876A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2128474A2 (en) | 1972-10-20 |
| IT987518B (en) | 1975-03-20 |
| US3750770A (en) | 1973-08-07 |
| CH550291A (en) | 1974-06-14 |
| BE779940R (en) | 1972-06-16 |
| ZA721203B (en) | 1972-11-29 |
| FR2128474B2 (en) | 1977-12-23 |
| ES400972A2 (en) | 1975-01-16 |
| BR7201203D0 (en) | 1973-05-10 |
| DE2209876A1 (en) | 1972-11-02 |
| NL7202530A (en) | 1972-09-05 |
| CA961510A (en) | 1975-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |