Jack of quick lift

A jack and fast technology, applied in the direction of lifting devices, etc., can solve problems such as affecting use, low efficiency, and slow lifting speed

Inactive Publication Date: 2009-09-23
CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Jacks are widely used in lifting operations, usually by hand. Portable jacks are light in weight, easy to carry, and have a wide range of applications. However, their lifting speed is slow and their efficiency is low, which affects their use.

Method used

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Examples

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Embodiment Construction

[0022] With reference to the accompanying drawings, the present invention will be further described in accordance with the order of the claims, figure 1 It is a schematic diagram of the overall structure of a quick-pulling jack of the present invention, which is composed of a quick-pulling mechanism, a driving mechanism and a hoisting mechanism, and is characterized in that one end of the screw is provided with a quick-pulling device.

[0023] The quick lifting device includes: a telescopic sleeve 2, a boss 3, a handle 4, and a screw rod 19; the driving device includes: a ratchet handle 1, a connecting nut 15, and a screw rod 19; the lifting device includes: a joint 8, a rear connecting rod 9 , Rear pin 10, connecting plate 11, front pin 12, front connecting rod 14, connecting nut 15.

[0024] The screw 19 passes through the center hole of the joint 8 and the telescopic sleeve 2 in turn and is connected to the ratchet handle 1. The joint 8 is connected to one end of the handle...

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PUM

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Abstract

The invention discloses a jack of quick lift, consisting of a driving device and a hoisting device. The jack is characterized in that: one end of a screw is provided with a quick lift device. When in use, the jack is put under an object to be jacked up; if the upper plane of the jack is comparatively far from the object to be jacked up, a flexible sleeve can be drawn quickly to drive the screw to be drawn out, and consequently, the top of the jack touches the object to be jacked up quickly; then a locating sleeve is rotated to lead an inner hole boss of a grip end to enter a circular tooth socket of the locating sleeve and be automatically locked and positioned; and subsequently a ratchet spanner is rotated to cause the screw to rotate to jack up the object. When in descending, reverse operation is conducted to cause load to be removed from the jack; and then the flexible sleeve is retracted in the grip to reset the jack. Proved by use, the jack-up operation of the jack is quick and saves time, the working efficiency is improved by more than 2 times, and the jack is safe, reliable, light in weight and convenient in use.

Description

technical field [0001] The present invention relates to a jack used for lifting, which is a jack that can be pulled up quickly. Background technique [0002] Jacks are widely used in lifting operations, usually manual operation. Portable jacks have a wide range of applications due to their light weight and easy portability, but their lifting speed is slow and efficiency is low, which affects use. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a portable jack that can be raised and lowered quickly, which has high use efficiency and saves time. In order to achieve the above purpose, the jack of the present invention is composed of a driving device and a lifting device, and is characterized in that: one end of the screw is provided with Quick lift device. [0004] The screw rod passes through the center hole of the joint and the telescopic sleeve in turn to connect with the ratchet handle, the joint is connected to one end of the handle,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F3/10B66F3/08
Inventor 白天海
Owner CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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