CN214527859U

CN214527859U - Novel labor-saving bidirectional ratchet jack

Info

Publication number: CN214527859U
Application number: CN202023144548.3U
Authority: CN
Inventors: 胡官阳; 韩泽琦; 金佳翰; 蔡姚杰
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-29
Anticipated expiration: 2030-12-24

Abstract

A novel labor-saving bidirectional ratchet jack comprises a base, a shell, a bidirectional ratchet component, a threaded rod, a long nut and a rotary rod, wherein the base is fixedly connected with the shell, the shell is provided with a cylindrical upright column, the threaded rod and the long nut both penetrate through the center of a cylinder, the upper end of the threaded rod is in threaded fit with the inner wall of the long nut, and a friction cover is fixed at the upper end of the long nut; install in the pivot of rotary rod ratchet and first standard straight bevel gear of two-way ratchet subassembly, first standard straight bevel gear and the meshing of second standard straight bevel gear, second standard straight bevel gear and the coaxial setting of first spur gear, first spur gear and the meshing of second spur gear, the lower extreme of threaded rod is fixed second spur gear. The utility model provides a friction is little, laborsaving, gyration simple novel laborsaving two-way ratchet jack.

Description

Novel labor-saving bidirectional ratchet jack

Technical Field

The utility model relates to a jack.

Background

The jack is widely applied to the fields of buildings, machining, automobiles and the like, different jacks are required under different working conditions, the existing jack mainly comprises a horizontal jack and a vertical jack, the horizontal jack is small in size, but small in working height, small in lifting distance and mainly used for automobile repair, the vertical jack is high in working height and relatively high in lifting distance, but large in handle rotation diameter, large in friction force and difficult to lift, and the requirements cannot be met perfectly. Therefore, a jack with small friction, labor saving and simple rotation is needed.

Disclosure of Invention

In order to overcome the defects that the rotary diameter of the handle of the existing jack is large, the friction force is large, the lifting difficulty cannot meet the requirements perfectly, the utility model provides a novel labor-saving bidirectional ratchet jack with small friction, labor-saving and simple rotation.

The utility model provides a technical scheme that its technical problem adopted is:

a novel labor-saving bidirectional ratchet jack comprises a base, a shell, a bidirectional ratchet component, a threaded rod, a long nut and a rotary rod, wherein the base is fixedly connected with the shell, the shell is provided with a cylindrical upright column, the threaded rod and the long nut both penetrate through the center of a cylinder, the upper end of the threaded rod is in threaded fit with the inner wall of the long nut, and a friction cover is fixed at the upper end of the long nut; install in the pivot of rotary rod ratchet and first standard straight bevel gear of two-way ratchet subassembly, first standard straight bevel gear and the meshing of second standard straight bevel gear, second standard straight bevel gear and the coaxial setting of first spur gear, first spur gear and the meshing of second spur gear, the lower extreme of threaded rod is fixed second spur gear.

Further, two-way ratchet part includes ratchet, sliding pin, spring and knob, the sliding pin lower extreme is contradicted on the tooth of ratchet, the sliding pin upper end is connected with the knob, and the spring suit is on the sliding pin, and the upper end of spring is contradicted in the shell, and the spring lower extreme is contradicted on the step of the front end of sliding pin.

The utility model discloses in, standard straight-tooth bevel gear, spur gear form a set of moment train that subtracts in the step shaft cooperation, calculate through the design, and the drive ratio is 1: around 4.5, this also means that the moment will be reduced by 4.5 times, thereby achieving the effect of reducing the moment. Long nut, threaded rod do the utility model discloses a hoisting mechanism, the screw thread selection of the two is trapezoidal transmission screw thread, and at the jack-up in-process, the friction lid on long nut top with by the in close contact with between the jack-up object, form great frictional force to prevent that the relative ground of long nut from taking place rotatoryly, the user is rotatory this moment the rotary rod drives the threaded rod through the transmission of train and rotates, thereby takes place relative rotation with long nut, thereby realizes the action that long nut rises.

The beneficial effects of the utility model are that: the direction that needs twist reverse when changing people and using through straight bevel gear, increase moment through the gear ratio of increase gear, reach laborsaving purpose, moreover, the two-way ratchet that this product used can realize convenient and fast's gyration mode more, improves the efficiency of using. Meanwhile, the spiral nut and the friction plate are designed to meet the requirements of different lifting heights, so that the application range of the product is wider.

Drawings

FIG. 1 is an internal cross-sectional view of a novel labor-saving bidirectional ratchet jack

FIG. 2 is a left side view of the whole machine

FIG. 3 is a schematic view of ratchet operation

FIG. 4 is a schematic view of the operation of the threaded rod

In the figure: 1. a base; 2. a housing; 3. a ratchet wheel; 4. a slide pin; 5. a spring; 6. angular contact ball bearings; 7. a first standard straight bevel gear; 8. a second standard straight bevel gear; 9. a first cylindrical gear; 10. a second cylindrical gear; 11. a threaded rod; 12. a long nut; 13. a friction cover; 14. a knob; 15. rotary rod

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, a novel labor-saving bidirectional ratchet jack comprises a base 1, a shell 2, a bidirectional ratchet component, a threaded rod 11, a long nut 12 and a rotary rod 15, wherein the base 1 is fixedly connected with the shell 2, the shell 2 is provided with a cylindrical upright column, the threaded rod 11 and the long nut 12 both penetrate through the center of the cylinder, the upper end of the threaded rod 11 is in threaded fit with the inner wall of the long nut 12, and a friction cover 14 is fixed at the upper end of the long nut 12; install in the pivot of rotary rod 15 ratchet and first standard straight bevel gear 7 of two-way ratchet subassembly, first standard straight bevel gear 7 meshes with second standard straight bevel gear 8, second standard straight bevel gear 8 and the coaxial setting of first spur gear 9, first spur gear 9 and the meshing of second spur gear 10, the lower extreme of threaded rod 11 is fixed second spur gear 10.

Further, two-way ratchet part includes ratchet 3, sliding pin 4, spring 5 and knob 14, sliding pin 4 contradicts on the tooth of ratchet 3, sliding pin 4 upper end is connected with knob 14, and spring 5 suit is on sliding pin 4, and the upper end of spring 5 is contradicted in shell 2, and the lower extreme of spring 5 contradicts on the step of sliding pin's front end.

The implementation process of the hoisting object is as follows: referring to fig. 1 and 4, a user rotates the rotating rod 15 to drive the ratchet 3 to rotate in an allowable direction, and simultaneously drives the first straight bevel gear 7 to rotate, so as to drive the second straight bevel gear 8, the first cylindrical gear 9 and the second cylindrical gear 10 to rotate, and then drive the threaded rod 11 to rotate, and the long nut 12 cannot rotate relative to the ground under the action of the upper friction cover 13, so that the long nut 12 can rotate relative to the threaded rod 1, and then the long nut 13 can move up, and thus the function of lifting a heavy object is achieved.

The process of descending the heavy object: referring to fig. 1 and 3, when the device is used, the knob 14 in interference fit with the sliding pin 5 is rotated to enable the sliding pin to rotate 90 degrees, the bidirectional ratchet wheel can rotate in the opposite direction, at the moment, similar to a hoisting process, the first straight bevel gear 7 rotates to further drive the two straight bevel gears 8, the first cylindrical gear 9 and the second cylindrical gear 10 to rotate, further drive the threaded rod 11 to rotate, the long nut 12 cannot rotate relative to the ground under the action of the upper friction cover 13, and therefore can rotate relative to the threaded rod 11, further the long nut 13 descends, and further the function of descending heavy objects is achieved.

The embodiments described in this specification are merely examples of implementations of the inventive concepts, which are intended for illustrative purposes only. The scope of the present invention should not be construed as being limited to the specific forms set forth in the following examples, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel labor-saving bidirectional ratchet jack is characterized by comprising a base, a shell, a bidirectional ratchet component, a threaded rod, a long nut and a rotary rod, wherein the base is fixedly connected with the shell, the shell is provided with a cylindrical upright column, the threaded rod and the long nut penetrate through the center of a cylinder, the upper end of the threaded rod is in threaded fit with the inner wall of the long nut, and a friction cover is fixed at the upper end of the long nut; install in the pivot of rotary rod ratchet and first standard straight bevel gear of two-way ratchet subassembly, first standard straight bevel gear and the meshing of second standard straight bevel gear, second standard straight bevel gear and the coaxial setting of first spur gear, first spur gear and the meshing of second spur gear, the lower extreme of threaded rod is fixed second spur gear.

2. The novel labor-saving bidirectional ratchet jack as set forth in claim 1, wherein: the bidirectional ratchet component comprises a ratchet wheel, a sliding pin, a spring and a knob, wherein the lower end of the sliding pin is abutted against teeth of the ratchet wheel, the upper end of the sliding pin is connected with the knob, the spring is sleeved on the sliding pin, the upper end of the spring is abutted against the outer shell, and the lower end of the spring is abutted against a step at the front end of the sliding pin.