A test stand (10) for testing hoists (16) includes a test frame (12) and a tensioning device (14) to apply a tensile load to the hoist (16) being tested. The hoist (16) is connected to the test stand (10) at two connection points (26, 28) to which the tensioning device (14) applies a tensile load. S
A test stand (10) for testing hoists (16) includes a test frame (12) and a tensioning device (14) to apply a tensile load to the hoist (16) being tested. The hoist (16) is connected to the test stand (10) at two connection points (26, 28) to which the tensioning device (14) applies a tensile load. Support legs (18, 20) are mounted to the test frame (12) for orienting the test frame (12) in either a generally vertical orientation or in a generally horizontal orientation to facilitate attachment of heavy hoists (16) for testing. Test frame (12) mounted receptacles (44) cooperate with forklift blades (122) for facilitating the transport of the test stand (10).
대표청구항▼
What is claimed is: 1. A test stand for testing a hoist including a hoist body, a chain, and two hooks said test stand comprising: a test frame having two side members, an upper member, and a lower member, said side members spacing said upper member apart from said lower member; a tensioning device
What is claimed is: 1. A test stand for testing a hoist including a hoist body, a chain, and two hooks said test stand comprising: a test frame having two side members, an upper member, and a lower member, said side members spacing said upper member apart from said lower member; a tensioning device mounted on one of said upper and lower members and operably coupled to a first connection point for attachment to a first hook of said hoist; a second connection point attached to said other of said upper and lower members for connection to a second hook of said hoist; a first pair of support legs attached to said test frame proximate one of said upper and lower members and for holding said test frame in a generally vertical position; a second pair of support legs attached to said test frame proximate the other of said upper and lower members; and said second pair of support legs cooperating with said first pair of support legs for supporting said test frame in a generally horizontal orientation when said test frame is tilted over from a generally vertical position. 2. A test stand for testing hoisting and related lifting equipment in a vertical orientation or in a horizontal orientation, comprising: a test frame including an upper member, a lower member longitudinally spaced from the upper member, a first side member, and a second side member laterally spaced from the first side member; a tensioning system connected to the frame, the tensioning system including a hydraulic cylinder configured to apply a pulling force to, or resist a pulling force from, an item of hoisting or related lifting equipment when the item is releasably connected to the tensioning system; a first pair of support legs connected to the test frame, the first pair of support legs configured to contact a ground surface and maintain the rest frame in a vertical orientation; and a second pair of support legs connected to the test frame, the second pair of support legs positioned above the first pair of support legs when the test frame is in a vertical orientation, the second pair of support legs in non-contacting relationship with the ground surface when the test frame is in a vertical orientation, the second pair of support legs configured to cooperate with the first pair of support legs to support the test frame in a horizontal orientation above the ground surface when the test frame is tilted over from a vertical orientation to a horizontal orientation, whereby the test frame may be used to test an item of hoisting or related lifting equipment when the test frame is in a vertical orientation and in a horizontal orientation. 3. The test stand of claim 2 wherein the hydraulic cylinder is located at the upper member, the hydraulic cylinder extending vertically upward from the upper member when the test frame is in a vertical orientation. 4. The test stand of claim 3 wherein each of the support legs is configured to contact the ground surface when the test frame is in a horizontal orientation and the ground surface is generally planar. 5. The test stand of claim 4 wherein each of the support legs includes an end that contacts the ground surface when the test frame is in a horizontal orientation and the ground surface is generally planar. 6. The test stand of claim 5 wherein the test frame defines a plane, and each of the support legs includes a portion that extends from the test frame to the end, the portion extending out from the test frame at an angle of about 90 degrees relative to the plane of the test frame. 7. The test stand of claim 6 wherein the first pair of support legs is proximate the test frame lower member, and the second pair of support legs is proximate the test frame upper member. 8. The test stand of claim 7 wherein the test frame does not pivot relative to the first pair of support legs, whereby the first pair of support legs is rotated when the test frame is tilted over from a vertical orientation to a horizontal orientation. 9. The test stand of claim 8 wherein the tensioning system includes a hydraulic hand pump fluidly connected to the hydraulic cylinder, the hydraulic hand pump located at an outwardly-facing peripheral surface of one of the test frame first and second side members in an orientation parallel to the one of the side members, whereby the hand pump is in a vertical orientation when the test frame is vertically oriented, and in a horizontal orientation when the test frame is horizontally oriented. 10. The test stand of claim 9 wherein the test stand includes a connection point connected to the hydraulic cylinder and another connection point connected to the test frame proximate the lower member, the connection points configured to releasably connect with an item of hoisting or related lifting equipment. 11. The test stand of claim 10 wherein the test stand includes a pair of elongated tubular members connected to the test frame proximate the test frame lower member, each tubular member perpendicular to the test frame and configured to releasably received a blade of a forklift. 12. The test stand of claim 2 wherein each of the support legs is configured to contact the ground surface when the test frame is in a horizontal orientation and the ground surface is generally planar. 13. The test stand of claim 2 wherein the test frame does not pivot relative to the first pair of support legs, whereby the first pair of support legs is rotated when the test frame is tilted over from a vertical orientation to a horizontal orientation. 14. The test stand of claim 2 wherein the tensioning system includes a hydraulic hand pump fluidly connected to the hydraulic cylinder, the hydraulic hand pump located at an outwardly-facing peripheral surface of one of the test frame first and second side members in an orientation parallel to the one of the side members, whereby the hand pump is in a vertical orientation when the test frame is vertically oriented, and in a horizontal orientation when the test frame is horizontally oriented. 15. The test stand of claim 2 wherein the test stand includes a connection point connected to the hydraulic cylinder and another connection point connected to the test frame proximate the lower member, the connection points configured to releasably connect with an item of hoisting or related lifting equipment. 16. The test stand of claim 2 wherein the test stand includes a pair of elongated tubular members connected to the test frame proximate the test frame lower member, each tubular member perpendicular to the test frame and configured to releasably received a blade of a forklift. 17. A test stand for testing hoisting and related lifting equipment in a vertical orientation or in a horizontal orientation, comprising: a test frame including an upper member, a lower member longitudinally spaced from the upper member, a first side member, and a second side member laterally spaced from the first side member; a tensioning system connected to the frame, the tensioning system including a hydraulic cylinder located at the upper member, the hydraulic cylinder extending vertically upward from the upper member when the test frame is in a vertical orientation, the hydraulic cylinder configured to apply a pulling force to, or resist a pulling force from, an item of hoisting or related lifting equipment when the item is releasably connected to the tensioning system; a first pair of support legs connected to the test frame, the first pair of support legs configured to contact a ground surface and maintain the test frame in a vertical orientation; and a second pair of support legs connected to the test frame, the second pair of support legs positioned above the first pair of support legs when the test frame is in a vertical orientation, the second pair of support legs in non-contacting relationship with the ground surface when the test frame is in a vertical orientation, the second pair of support legs configured to cooperate with the first pair of support legs to support the test frame in a horizontal orientation above the ground surface when the test frame is tilted over from a vertical orientation to a horizontal orientation, with each of the first and second pair support legs contacting the ground surface when the ground surface is generally planar, the tensioning system further including a hydraulic band pump fluidly connected to the hydraulic cylinder, the hydraulic hand pump located at an outwardly-facing peripheral surface of one of the test frame first and second side members in an orientation parallel to the one of the side members, whereby the band pump is in a vertical orientation when the test frame is vertically oriented, and in a horizontal orientation when the test frame is horizontally oriented, whereby the test frame may be used to test an item of hoisting or related lifting equipment when the test frame is in a vertical orientation and in a horizontal orientation. 18. The test stand of claim 17 wherein each of the support legs includes an end that contacts the ground surface when the test frame is in a horizontal orientation and the ground surface is generally planar. 19. The test stand of claim 18 wherein the test frame defines a plane, and each of the support legs includes a portion that extends from the test frame to the end, the portion extending out from the test frame at an angle of about 90 degrees relative to the plane of the test frame. 20. The test stand of claim 17 wherein the first pair of support legs is proximate the test frame lower member, and the second pair of support legs is proximate the test frame upper member. 21. The test stand of claim 17 wherein the test frame does not pivot relative to the first pair of support legs, whereby the first pair of support legs is rotated when the test frame is tilted over from a vertical orientation to a horizontal orientation. 22. The test stand of claim 17 wherein the test stand includes a connection point connected to the hydraulic cylinder and another connection point connected to the test frame proximate the lower member, the connection points configured to releasably connect with an item of hoisting or related lifting equipment. 23. The test stand of claim 17 wherein the test stand includes a pair of elongated tubular members connected to the test frame proximate the test frame lower member, each tubular member perpendicular to the test frame and configured to releasably received a blade of a forklift.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (13)
Chen, Yi-Jen, Apparatus for measuring tension and stress capable of adjusting an angle of measurement.
Volk Benjamin L. (Creve Coeur MO) Volk ; Jr. Joseph A. (Creve Coeur MO) Kniepmann Mark R. (Florissant MO), Hoist for retracting a liner from a bulk bag as material is dispensed therefrom.
Keener Steven G. (Trabuco Canyon CA) Thrash Charles P. (Anaheim CA) Mecklenburg John T. (Lakewood CA), Method for high strain-rate testing of specimens.
Vondell Edward P. (Birmingham MI) Mobley Juliana (Waterford MI) Nunez Jospeh M. (Warren MI) Maas Charles A. (Troy MI) Stuch Donald (Canton MI) Yu Jinquan (Warren MI), Pneumatic tester for engine oil pumps.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.