NZ786376B2 - Grapple carriage - Google Patents
Grapple carriageInfo
- Publication number
- NZ786376B2 NZ786376B2 NZ786376A NZ78637620A NZ786376B2 NZ 786376 B2 NZ786376 B2 NZ 786376B2 NZ 786376 A NZ786376 A NZ 786376A NZ 78637620 A NZ78637620 A NZ 78637620A NZ 786376 B2 NZ786376 B2 NZ 786376B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- grapple
- carriage
- skyline
- skidline
- hydraulic pump
- Prior art date
Links
- 238000005096 rolling process Methods 0.000 claims abstract 3
- 230000005611 electricity Effects 0.000 claims 4
- 238000000034 method Methods 0.000 claims 3
- 238000010248 power generation Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/003—Collecting felled trees
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
- B61B12/02—Suspension of the load; Guiding means, e.g. wheels; Attaching traction cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B7/00—Rope railway systems with suspended flexible tracks
- B61B7/04—Rope railway systems with suspended flexible tracks with suspended tracks serving as haulage cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B7/00—Rope railway systems with suspended flexible tracks
- B61B7/06—Rope railway systems with suspended flexible tracks with self-propelled vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/58—Gripping members engaging only the external or internal surfaces of the articles and deforming the articles, e.g. by using gripping members such as tongs or grapples
- B66C1/585—Log grapples
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C21/00—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C21/00—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
- B66C21/02—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways with cable-ways supported on framework swingably connected to groundengaging elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C21/00—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
- B66C21/04—Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways with cable-ways supported at one end or both ends on bodily movable framework, e.g. framework mounted on rail track
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
- B66C2700/011—Cable cranes
-
- 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
Abstract
skyline log conveying system having a skyline for extending between two elevated supports, one at or above a landing at which logs are deposited and another at a lower position at least as low as an area from which logs are to be moved. A carriage is rollably mounted to the skyline. A grapple is suspended from the carriage, the grapple having closed and opened positions for grasping and releasing logs. A hydraulic pump is mounted to the carriage. A rotatable member is driven by the skyline with the rolling of the carriage on the skyline for driving the hydraulic pump to generate hydraulic pressure. At least one accumulator is in hydraulic communication with the hydraulic pump, the at least one accumulator capable of storing pressure when hydraulic pressure is transmitted to it by the hydraulic pump. A hydraulic ram is hydraulically interconnected with the at least one accumulator and mounted to the grapple to selectively close the grapple to facilitate the grasping of logs. A second hydraulic pump and/or alternator is provided in the grapple housing for improved operation.
Claims (11)
1. A skyline log conveying system comprising: a skyline for extending between two elevated supports, one at or above a landing at which logs are deposited and another at a lower position at least as low as an area from which logs are to be moved; a carriage rollably mounted to the skyline; a skidline; a grapple housing suspended from the carriage; a grapple extending from the grapple housing and having closed and opened positions for grasping and releasing logs; a first hydraulic pump mounted to the carriage; a rotatable member mounted to the carriage and driven by the skyline or the skidline for driving the first hydraulic pump to generate hydraulic pressure; at least one accumulator in hydraulic communication with the first hydraulic pump, the at least one accumulator capable of storing pressure when hydraulic pressure is transmitted to the at least one accumulator by the first hydraulic pump; a hydraulic ram hydraulically interconnected with at least one additional accumulator and mounted to the grapple to selectively close the grapple to facilitate the grasping of logs, wherein the grapple housing includes at least one of a second hydraulic pump and an alternator.
2. The skyline log conveying system of claim 1 wherein the hydraulic ram comprises a two-way hydraulic cylinder mounted to the grapple to selectively open as well as close the grapple to facilitate the grasping and releasing of logs.
3. The skyline log conveying system of claim 1, further comprising a further alternator coupled to the carriage and having a rotatable member driven with the rolling of the carriage for generating electricity, and a battery for storing electricity generated by the further alternator that is coupled to the carriage and to provide power when needed by the system.
4. The skyline log conveying system of claim 1, wherein the first hydraulic pump generates hydraulic pressure while the carriage rolls both up and down the skyline or the skidline.
5. The skyline log conveying system of claim 1, wherein the position of the grapple housing is controlled by the skidline.
6. The skyline log conveying system of claim 5 wherein a vertical disposition of the grapple housing is controlled by the skidline.
7. The skyline log conveying system of claim 6 wherein the carriage further includes a second rotatable member that is driven by the skidline as the skidline is changing the vertical disposition of the grapple housing.
8. A combination for picking up and transporting logs along a path of a skyline, comprising: a carriage including a plurality of carriage rollers for rotatably mounting a carriage to the skyline; a first hydraulic pump including a first rotatable member that rotates to generate hydraulic pressure as the carriage rolls along the skyline; at least one accumulator hydraulically connected to the first hydraulic pump to receive hydraulic pressure and store that pressure; a first alternator including a second rotatable member that rotates to generate electricity as the carriage rolls along the skyline; a battery electrically connected to the first alternator to store electricity generated by the first alternator; a grapple housing suspended from the carriage and a grapple extending from the grapple housing, the grapple configured to be closed and opened to grasp and release at least one log; a ram mounted to selectively open and close the grapple, the ram being hydraulically connected to at least one additional accumulator or being electrically connected to at least one additional battery; and a third rotatable member that is rotated by a skidline , wherein the third rotatable member drives at least one of a second hydraulic pump and a second alternator within the grapple housing.
9. A method of operating a logging system, comprising: providing a yarder comprising a first winch and a second winch positioned near a landing; attaching a skyline to the yarder at a first end and to a securing support at a second end; providing a carriage for rolling on the skyline; providing a grapple suspended below the carriage, the grapple being adjustable between open and closed positions by operation of a grapple position control ram; providing a hydraulic pump in the carriage for generating hydraulic pressure; providing a skidline connected to the second winch at a first end and to the carriage at a second end, wherein at least one of the skyline or the skidline is directed through the carriage and drives a power generation sheave to provide power for the hydraulic pump as the skyline or the skidline passes through the carriage; providing at least one accumulator hydraulically interconnected with the hydraulic pump to receive and store hydraulic pressure from the hydraulic pump; providing the grapple position control ram hydraulically interconnected with at least one additional accumulator; providing a grapple position control valve disposed between the at least one additional accumulator and the grapple position control ram; actuating the grapple position control valve to control transmission of hydraulic pressure to the grapple position control ram to selectively open and close the grapple; and a grapple housing disposed between the carriage and the grapple, wherein a second power generation sheave is located within the grapple housing and is configured to be driven by the skidline to drive at least one of a second hydraulic pump and a second alternator.
10. The method of claim 9 wherein the skidline controls only a vertical position of the grapple housing.
11. The method of claim 10, further comprising: providing a skidline clamp that is configured to be closed and opened to fix the vertical position of the grapple or to release the grapple to permit the grapple to be raised and lowered, respectively, by the skidline.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862727404P | 2018-09-05 | 2018-09-05 | |
| US16/547,135 US11365098B2 (en) | 2018-09-05 | 2019-08-21 | Grapple carriage |
| PCT/US2020/046800 WO2021034826A1 (en) | 2018-09-05 | 2020-08-18 | Grapple carriage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ786376A NZ786376A (en) | 2024-04-26 |
| NZ786376B2 true NZ786376B2 (en) | 2024-07-30 |
Family
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