Hoist-testing apparatus and control system therefor专利检索-电液伺服作动器致动器机电学专利检索查询-专利查询网

Hoist-testing apparatus and control system therefor

阅读：474发布：2024-01-18

专利汇可以提供Hoist-testing apparatus and control system therefor专利检索，专利查询，专利分析的服务。并且Apparatus for testing the rated load, speed and braking capabilities of a hoist comprises a hydraulically operated test winch which imposes a predetermined load or line pull at a predetermined speed on the hoist line. The hoist line is connected to the test winch cable by a lever and pulley arrangement. A load cell responsive to lever movement and, therefore, the load imposed, provides a visual readout thereof at an operation control station. Load size is remotely adjustable from the control station by a load control rheostat which controls an electric-hydraulic pressure control valve which, in turn, adjusts the pressure relief setting of a pressure relief valve between a hydraulic winch motor and the hydraulic pump for that motor. A load control pressure gauge at the control station is responsive to output pressure of the electric-hydraulic pressure control valve for the pressure relief valve and is calibrated to indicate pounds of line pull or load which the hoist being tested can exert to enable the operator to set the load control rheostat accordingly. Load speed is remotely adjustable from the control station by a speed control rheostat which controls another electric-hydraulic pressure control valve which, in turn, operates a cylinder to adjust the speed setting of a servo-stem speed control device on the pump. A speed control pressure gauge at the control station is responsive to output pressure of the other electric-hydraulic pressure control valve for the speed adjustment cylinder and is calibrated to indicate feet per minute of hoist line speed to enable the operator to set the speed control rheostat accordingly.，下面是Hoist-testing apparatus and control system therefor专利的具体信息内容。

权利要求

1. Apparatus for testing a hoist having a hoist line and rated to have a predetermined line pull and predetermined line speed comprising; a test winch, connecting means for connecting the hoist line to said test winch, said connecting means including a member movable in proportion to the amount of line pull or load imposed on said hoist by said test winch, sensing means responsive to the movement of said member and providing an indication of the size of load being imposed, load control means for controlling the size of the load imposed by said test winch on said hoist, and speed control means for controlling the speed of said test winch so that it is related to hoist line speed.

2. Apparatus according to claim 1 wherein said test winch comprises a hydraulic motor driven by a hydraulic pump, wherein said load control means controls said motor, and wherein said speed control means controls said pump.

3. Apparatus according to claim 2 wherein said load control means comprises a pressure relief valve connected between said pump and said motor and wherein said speed control means comprises speed adjustment means on said pump.

4. Apparatus according to claim 3 wherein said sensing means provides an indication of load size at a control station and wherein said pressure relief valve and said speed adjustment means are remotely adjustable from said control station.

5. Apparatus according to claim 4 including a hydraulic fluid reservoir for supplying said pump, a hydraulic fluid line connected between said reservoir and said motor and between said reservoir and said relief valve, and first and second check valves in parallel but in opposite relationship with each other in said line, said first check valve permitting fluid flow to said motor when the latter is acting as a pump, said second check valve permitting fluid flow to said reservoir from said relief valve when said relief valve exceeds its pressure setting.

6. Apparatus according to claim 5 wherein said sensing means comprises a load cell connected to said movable member.

7. Apparatus according to claim 6 wherein said test winch comprises a test cable, wherein said connecting means comprises a lever as said movable member and wherein said connecting means further comprises pulley means connected to said lever, said hoist line and said test cable being connected to said pulley means.

8. Apparatus according to claim 7 wherein said pulley means are connected to said lever on one side of said fulcrum and said sensing means comprises a load cell which is connected to said lever on the other side of said fulcrum.

9. Apparatus according to claim 4 wherein said load control means comprises a first electric-hydraulic pressure control valve remotely operable from said control station to adjust said pressure relief valve, and wherein said speed control means comprises a second electric-hydraulic pressure control valve remotely operable from said control station and a hydraulic actuator controlled thereby to adjust said speed adjustment means on said pump.

10. Apparatus according to claim 9 wherein said first and second electric-hydraulic pressure control valves are remotely operable by rheostats at said control station.

11. Apparatus according to claim 9 wherein said load control means comprises load indicator means at said control station responsive to fluid pressure supplied by said first electric-hydraulic pressure control valve to said pressure relief valve to indicate a load setting for said hoist, and wherein said speed control means comprises speed indicator means at said control station responsive to fluid pressure supplied by said second electric-hydraulic pressure control valve to said actuator to indicate a speed setting for said hoist.

12. Apparatus according to claim 11 wherein said load indicator means provides a readout in pounds and wherein said speed indicator means provides a readout in feet per minute.

13. Apparatus according to claim 10 wherein said rheostats establish pressure levels at the pressure ports of said pressure control valves.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
一种四氯化碳沉淀块状物切割装置	2020-10-08	3
深水立管提升系统试验装置	2022-06-24	1
智能数控超高压真三维非均匀加卸载与稳压模型试验系统	2020-09-09	0
一种平衡式高压大流量交流伺服直驱插装阀	2022-05-18	2
铣削圆形刀盘主轴传动及滑枕进给驱动组合装置	2021-10-18	0
Apparatus and method for controlling mold clamping of a compression molding machine	2023-03-13	1
Pressure compensator of reciprocating motion equipment in thrust direction	2023-07-14	0
Controller for rivetting machine	2023-05-13	1
一种灌装封口机的封口装置	2020-05-25	0
一种软包锂电池自动分档机	2020-09-20	2

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

电液伺服作动器热门专利

热门分类

Hoist-testing apparatus and control system therefor

该功能需要专业版企业版VIP权限，您可以：