CN209835505U

CN209835505U - Long-stroke screw self-locking jack

Info

Publication number: CN209835505U
Application number: CN201920288338.XU
Authority: CN
Inventors: 戴向胜; 黄云志; 黄振清
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2019-12-24
Anticipated expiration: 2029-03-07

Abstract

The utility model belongs to the technical field of auto-lock jack and specifically relates to long stroke screw thread auto-lock jack. The self-locking jack comprises an outer barrel, an inner barrel, a pressurizing hole, a pressure relief hole, an elongated outer barrel and a self-locking thread block, wherein the inner barrel is sleeved in the outer barrel, the pressurizing hole and the pressure relief hole are formed in the outer barrel, the inner barrel is in threaded connection with the self-locking thread block, the elongated outer barrel is fixed on the outer barrel, the inner barrel penetrates through the elongated outer barrel, and the width of an inner cavity of the elongated outer barrel is larger than the diameter of the inner. The utility model discloses a fixed extension urceolus that is used for adding the long stroke on the urceolus to make with the width extension of inner tube, the auto-lock screw thread also correspondingly widens, and realizes the auto-lock through auto-lock thread piece. Avoid the contact of self-locking screw thread and outer tube wall.

Description

Long-stroke screw self-locking jack

Technical Field

The utility model belongs to the technical field of auto-lock jack and specifically relates to long stroke screw thread auto-lock jack.

Background

The effective stroke of the existing self-locking jack is short, generally 50 mm, and some self-locking jacks need to provide about 150 mm of effective stroke; the situation that the outer cylinder wall of the jack is damaged by threads can occur by adopting the conventional self-locking jack scheme, so that the sealing effect is poor, and the actual service life of the jack is shortened.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the technical problem described in the background art, the utility model provides a long stroke screw thread auto-lock jack is through the extension urceolus that is used for extension stroke of fixing on the urceolus to the feasible inner tube extension, auto-lock screw thread also corresponding widening, and realize the auto-lock through auto-lock thread piece. Avoid the contact of self-locking screw thread and outer tube wall.

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

the utility model provides a long stroke screw thread auto-lock jack, includes urceolus, inner tube, pressurization hole, pressure release hole, extension urceolus and auto-lock thread piece, the inner tube cover is established in the urceolus, has seted up pressurization hole and pressure release hole on the urceolus, and threaded connection has auto-lock thread piece on the inner tube, is fixed with extension urceolus on the urceolus, and the inner tube passes extension urceolus, and the inner chamber width of extension urceolus is greater than the inner tube diameter.

Specifically, the outer wall of the inner barrel is provided with a self-locking thread, and the inner barrel is matched with the thread on the inner hole wall of the self-locking thread block through the self-locking thread.

Specifically, a universal structure is installed at the top end of the inner cylinder.

The utility model has the advantages that: the utility model provides a long stroke screw thread auto-lock jack is through the extension urceolus that is used for adding the long stroke of fixed one on the urceolus to make with the width extension of inner tube, the auto-lock screw thread also corresponding widens, and realizes the auto-lock through auto-lock thread piece. Avoid the contact of self-locking screw thread and outer tube wall.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view after jacking of the utility model;

FIG. 3 is a schematic structural view after self-locking of the present invention;

in the figure, 1, an outer cylinder, 2, an inner cylinder, 3, a pressurizing hole, 4, a pressure relief hole, 5, a lengthened outer cylinder, 6, a self-locking thread block and 7, a universal structure are adopted.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Fig. 1 is the structural schematic diagram of the utility model, fig. 2 is the structural schematic diagram of the utility model after jacking, fig. 3 is the structural schematic diagram of the utility model after auto-lock.

The utility model provides a long stroke screw thread auto-lock jack, includes urceolus 1, inner tube 2, pressurization hole 3, pressure release hole 4, extension urceolus 5 and auto-lock screw thread piece 6, 2 covers of inner tube are established in urceolus 1, have seted up pressurization hole 3 and pressure release hole 4 on the urceolus 1, and threaded connection has auto-lock screw thread piece 6 on the inner tube 2, is fixed with extension urceolus 5 on the urceolus 1, and inner tube 2 passes extension urceolus 5, and the inner chamber width of extension urceolus 5 is greater than the diameter of inner tube 2. The outer wall of the inner barrel 2 is provided with a self-locking thread, and the inner barrel 2 is matched with the thread on the inner hole wall of the self-locking thread block 6 through the self-locking thread. The top end of the inner cylinder 2 is provided with a universal structure 7.

As shown in fig. 1, the lengthened outer cylinder 5 is fixed on the outer cylinder 1, so that the stroke of the whole outer cylinder 1 is increased, the inner cylinder 2 can be correspondingly lengthened, and the self-locking thread on the inner cylinder 2 is widened. And the external long cylinder 5 can make the self-locking thread on the inner cylinder 2 separate from the contact with the inner wall of the outer cylinder 1. The width of the inner cavity of the external long cylinder 5 is larger than the diameter of the inner cylinder 2, so that the wall of the inner cavity of the external long cylinder 5 cannot be contacted with the self-locking thread of the inner cylinder 2.

As shown in figure 2, the outer cylinder 1 drives the inner cylinder 2 to extend outwards through oil pressure, and after the inner cylinder 2 extends out, the self-locking thread block 6 is close to the position at the top end of the inner cylinder 2.

As shown in fig. 3, after the inner cylinder 2 is extended, the self-locking screw block 6 is rotated, so that the self-locking screw block 6 moves downwards along the inner cylinder 2 until the self-locking screw block 6 is attached to the joint of the inner cylinder 2 and the lengthened outer cylinder 5.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a long stroke screw thread auto-lock jack, characterized by, includes urceolus (1), inner tube (2), pressurization hole (3), pressure release hole (4), extension urceolus (5) and auto-lock thread piece (6), inner tube (2) cover is established in urceolus (1), has seted up pressurization hole (3) and pressure release hole (4) on urceolus (1), and threaded connection has auto-lock thread piece (6) on inner tube (2), is fixed with extension urceolus (5) on urceolus (1), and inner tube (2) pass extension urceolus (5), and the inner chamber width of extension urceolus (5) is greater than inner tube (2) diameter.

2. The long travel screw self-locking jack of claim 1, wherein: the outer wall of the inner barrel (2) is provided with a self-locking thread, and the inner barrel (2) is matched with the thread on the inner hole wall of the self-locking thread block (6) through the self-locking thread.

3. The long travel screw self-locking jack of claim 1, wherein: the top end of the inner cylinder (2) is provided with a universal structure (7).