Connecting rod force expanding jack

A technology of jacks and connecting rods, applied in the direction of lifting devices, etc., can solve the problems of small output force, low efficiency, rocker arm wrench, dowel rod slipping, etc., and achieve the effects of reducing fatigue, convenient storage and saving space

Inactive Publication Date: 2020-08-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output force of this kind of jack is small, and the ratio of the hand cranking force to the output lifting force is low, which makes it too tiring to use, and the arm is easily fatigued, and the rocker arm wrench and do

Method used

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 to Figure 4 It is an embodiment disclosed by the present invention. The connecting rod power expansion jack of the present invention consists of a saddle 1, a support rod 2, a screw 3, a rotating disk 8, a long connecting rod 4, a short connecting rod 7, a push rod 5, a top plate 6, a hanging rope 9, a positioning pin 10, a column Pin nut 11 etc. are assembled, and wherein, the quantity of supporting rod 2, long connecting rod 4, short connecting rod 7 and ejector rod 5 are two.

[0025] The saddle 1 is the base when the present invention works, and the lower ends of the two supporting rods 2 are symmetrically hinged on the saddle 1, and the upper ends of the two supporting rods 2 and the lower ends of the two long connecting rods 4 are connected with pin nuts 11 respectively. .

[0026] The two long connecting rod...

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PUM

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Abstract

The invention provides a connecting rod force expanding jack. The jack comprises a saddle (1), supporting rods (2), a lead screw (3), a rotary disc (8), long connecting rods (4), short connecting rods(7), ejector rods (5), a top plate (6), a hanging rope (9), a positioning pin (10) and pin nuts (11), wherein the two long connecting rods and the two short connecting rods are respectively and symmetrically arranged and are crossed to form two X shapes with small upper parts and large lower parts, the rotary disc (8) is sleeved at the right end of the lead screw (3) and is fixed by the positioning pin (10), so that the loosening is avoided, and the jacking process is continuous and stable. According to the jack, through two-stage amplification of force arms of the long connecting rods and the short connecting rods, the output lifting force is multiplied, time and labor are saved in use, and even if the arm strength of an operator is small, the car can be easily jacked up so that tires can be conveniently replaced; and the connecting rod force expanding jack can be used as an upgrading product of a standard vehicle-mounted jack, is further suitable for jacking small and medium-sized equipment in departments such as factories and mines and traffic transportation, and has a good practical value in mechanical maintenance, particularly in the car maintenance industry.

Description

technical field [0001] The invention relates to the technical field of lifting equipment, in particular to a connecting rod expansion jack which doubles the output lifting force by using a connecting rod mechanism composed of a long connecting rod and a short connecting rod. Background technique [0002] The jack is a kind of lifting tool, which is widely used and has many types. Among them, most of the jacks as one of the standard tools for cars are hand scissor jacks. They are usually placed in the trunk of the car with the car. When the tire is damaged , used to jack up the body and replace tires. This kind of jack utilizes the principle of screw lead screw in the field of mechanical technology. Because of its shape like scissors, it is called a scissor jack. When in use, the rocker wrench is turned manually to drive the dowel rod to rotate the lead screw, and then the connecting rod mechanism is pushed to shrink to realize the lifting of the car. However, the output fo...

Claims

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Application Information

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IPC IPC(8): B66F3/12
CPCB66F3/12B66F2700/04
Inventor 祝海林唐鑫邹旻吴少华徐玉凯
Owner CHANGZHOU UNIV
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