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Screw rod follow-up supporting mechanism of lifting device

A supporting mechanism and lifting device technology, which is applied in the direction of lifting equipment safety devices, lifting devices, etc., can solve problems such as safety restrictions on heavy-duty jacking, and achieve the effects of avoiding heavy-load slipping, simple structure, and ensuring safety

Inactive Publication Date: 2009-05-06
上海先达特种土木工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to unsafe accidental factors such as oil leakage and pipe burst in the hydraulic cylinder, the safety of heavy-duty jacking is limited

Method used

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  • Screw rod follow-up supporting mechanism of lifting device
  • Screw rod follow-up supporting mechanism of lifting device
  • Screw rod follow-up supporting mechanism of lifting device

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Embodiment Construction

[0013] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0014] Such as figure 1 , shown in Fig. 3, is the screw rod follow-up support mechanism of the present invention, and it is made up of several follow-up support screw rods with bearings. It includes a base 1, a servo motor 2, a bearing round nut 3, a heavy-duty screw 4, a micrometer 5, an electronic amplifier 6, a bearing 7 and a spring 8, etc.

[0015] In the present invention, a heavy-duty screw 4 is installed on the base 1, the load-bearing round nut 3 is set on the heavy-duty screw 4, and a bearing 7 is installed between the load-bearing round nut 3 and the base 1 to reduce the distance between the load-bearing round nut 3 and the base 1. the friction between them. A support spring 8 is installed below the bearing 7, so that a gap δ is formed between the heavy-duty round nut 3 and the support 1. The output shaft of the servo motor 2 is equipped ...

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Abstract

The invention relates to a safety mechanism used for an oil cylinder or other hoisting devices, in particular to the screw-typed servo-supporting mechanism of a lifting-up oil cylinder hoisting device. The safety mechanism is characterized in that a base is provided with a heavy-loaded screw; a bearing circular nut is arranged on the heavy-loaded screw; a bearing is arranged between the bearing circular nut and the base; a spring is arranged below the bearing; the output shaft of a servo motor is connected with the bearing circular nut, the external side of the bearing circular nut is prepared into a gear; the base is provided with a micrometer which is connected with an electron amplifier by a leading wire; the output shaft of the servo motor is provided with a gear which is meshed with the gear at the external side of the bearing circular nut; and clearance is reserved between the bearing circular nut and the base. The safety mechanism has simple, compact and reasonable structure, can still effectively support the heavy-loaded workpiece when the oil pressure of the oil cylinder disappears suddenly, uses the servo-supporting screw to keep self-locking, avoids the sliding of the heavy load and ensures the safety of the lifting-up of the heavy-loaded workpiece.

Description

technical field [0001] The invention relates to a safety mechanism of an oil cylinder or other powerful lifting devices, in particular to a screw type follow-up support mechanism of a jacking oil cylinder lifting device. Background technique [0002] Using hydraulic jacking cylinders (hydraulic jacks) to lift heavy objects is a common construction method in engineering, especially in the case of heavy-duty workpieces weighing hundreds of tons, hydraulic jacking is the only feasible option. Due to unsafe accidental factors such as oil leakage and pipe burst in the hydraulic cylinder, the safety of heavy-duty jacking is limited. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages, thereby providing a screw follower support mechanism of a lifting device, the screw rod of the follower support mechanism gently touches the heavy-duty workpiece and synchronizes with the lifting process of the oil cylinder, and follows the...

Claims

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Application Information

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IPC IPC(8): B66F3/25B66F3/08B66F3/44B66F3/22B66F17/00
Inventor 吴定安徐文友
Owner 上海先达特种土木工程有限公司
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