GB852095A - Improvements in apparatus for under water rock breaking - Google Patents
Improvements in apparatus for under water rock breakingInfo
- Publication number
- GB852095A GB852095A GB1419258A GB1419258A GB852095A GB 852095 A GB852095 A GB 852095A GB 1419258 A GB1419258 A GB 1419258A GB 1419258 A GB1419258 A GB 1419258A GB 852095 A GB852095 A GB 852095A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cable
- clutch
- drum
- servomotor
- 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
- 239000011435 rock Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title 1
- 238000013022 venting Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
852,095. Rock-breaking apparatus. WESTMINSTER DREDGING CO. Ltd. July 30, 1959 [May 3, 1958], No. 14192/58. Class 68(1). In an underwater rock-breaking apparatus having a rock needle or drop hammer 1 which is hoisted by a winch drum 4 and cable 2, and is dropped by de-clutching the drum 4 from the shaft 5, the clutch is operated by a servomotor responsive to slackness in the cable, so that, after impact, the slackness in the cable operates the servomotor to clutch the drum to the shaft and to hoist the hammer. The servomotor is operated to de-clutch the drum 4 by a control device 12 which is actuated by a stop 17 on the cable 2 at the top of the ascent of the hammer, the device being separately suspended from a sheave 14 by a cable 13 on a hand-winch 15. As described, the servomotor system is pneumatic. The cable 2 is trained over a sheave 3 at the head of a jib (not shown) and the hammer 1 is guided in a sleeve (not shown) suspended from the jib. Pressure air is supplied at 20 and with the valves 21, 24, 26 open and the valves 22, 27 closed, the pneumatic servomotor clutch may be operated manually by the valve 23. With the valves 24, 26 closed and valves 21, 22, 27 open air is supplied by the line 9 to a piston valve 8 which is closed when the cable 2 is taut, but when, on impact, slackness occurs, the air pressure moves the piston rod 6 inwardly and air is supplied to the line 10 leading to a piston valve 11. The piston of the valve 11 is moved by the admitted air pressure to open ports whereby the line 20 is connected through the 'valve 27 and line 28 to the servomotor to clutch the drum 4 to the shaft 5 to hoist the hammer. When the stop 17 hits the bracket 16, the valve 12 is actuated to connect the line 19 with the line 18 and pressure is applied to the opposite end of the piston of the valve 11. The piston is moved back to its original position, the pressure spaces in the valve are connected to a venting port, and the servo-motor operates to de-clutch the drum from the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419258A GB852095A (en) | 1958-05-03 | 1958-05-03 | Improvements in apparatus for under water rock breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419258A GB852095A (en) | 1958-05-03 | 1958-05-03 | Improvements in apparatus for under water rock breaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB852095A true GB852095A (en) | 1960-10-26 |
Family
ID=10036699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1419258A Expired GB852095A (en) | 1958-05-03 | 1958-05-03 | Improvements in apparatus for under water rock breaking |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB852095A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938595A (en) * | 1974-09-19 | 1976-02-17 | Raymond International, Inc. | Apparatus and method for driving bulb piles |
| US4058175A (en) * | 1974-09-19 | 1977-11-15 | Raymond International Inc. | Method for operating pile driver |
| CN118517575A (en) * | 2024-07-23 | 2024-08-20 | 蓬莱环得钢阀有限公司 | A spherical water regulating valve for mitigating water flow impact |
-
1958
- 1958-05-03 GB GB1419258A patent/GB852095A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938595A (en) * | 1974-09-19 | 1976-02-17 | Raymond International, Inc. | Apparatus and method for driving bulb piles |
| US4058175A (en) * | 1974-09-19 | 1977-11-15 | Raymond International Inc. | Method for operating pile driver |
| CN118517575A (en) * | 2024-07-23 | 2024-08-20 | 蓬莱环得钢阀有限公司 | A spherical water regulating valve for mitigating water flow impact |
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