CN212335834U

CN212335834U - Lifting column for automatic extension ladder

Info

Publication number: CN212335834U
Application number: CN202020698038.1U
Authority: CN
Inventors: 胡绪山
Original assignee: Kunshan Zhete Electrical And Mechanical Technology Co ltd
Current assignee: Kunshan Zhete Electrical And Mechanical Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-01-12
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a lifting column for an automatic extension ladder, which relates to the technical field of lifting columns, and comprises an outer shaft and an inner shaft, wherein a socket communicated with the inner part of the outer shaft is arranged above the outer shaft, and the lower end of the inner shaft passes through the socket and is movably inserted into the outer shaft; the middle of the left side and the right side of the inner wall of the outer shaft is provided with a semicircular groove, the upper end of the semicircular groove is communicated with the upper surface of the outer shaft, the middle of the left side and the right side of the inner shaft is vertically fixed with a sliding strip, the sliding strip corresponds to the semicircular groove, and the sliding strip slides into the semicircular groove and is connected with the semicircular groove in a vertical sliding manner; the inner walls of the semicircular grooves are respectively attached with a sponge pad, oil filling holes communicated with the inner walls of the semicircular grooves are formed in the middle positions above the left side and the right side of the outer wall of the outer shaft, and plugs for sealing the oil filling holes are embedded in the oil filling holes; a threaded sleeve is vertically fixed at the lower part in the outer shaft; the beneficial effects of the utility model reside in that: the lifting is stable enough, the swinging is not easy, lubricating oil is added to the center of the part in time, the abrasion is reduced, and the service life is prolonged.

Description

Lifting column for automatic extension ladder

Technical Field

The utility model belongs to the technical field of the lift post technique and specifically relates to an automatic telescopic ladder is with lift post is related to.

Background

The lifting column is also called a lifting ground column, a lifting road column, an anti-impact road column, a hydraulic lifting column, an isolation pile and the like, the existing lifting column is poor in connection guiding performance between an inner shaft and an outer shaft in the lifting column, so that the inner shaft is prone to shaking and unstable in the lifting process, and after the lifting column is used for a long time, oxidation and rusting phenomena are prone to occurring on mechanical parts in the lifting column, abrasion during lifting motion is increased, and the lifting performance and the service life of the whole lifting column are affected for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that above-mentioned exists with not enough, provide a go up and down enough stably, be difficult for rocking to realize in time adding lubricating oil to the part center, reducing wear, increase of service life's automatic telescopic ladder is with lift post.

In order to achieve the purpose, the adopted technical scheme is as follows:

a lifting column for an automatic extension ladder comprises an outer shaft and an inner shaft, wherein a socket communicated with the inside of the outer shaft is formed above the outer shaft, and the lower end of the inner shaft penetrates through the socket and is movably inserted into the outer shaft;

the middle of the left side and the right side of the inner wall of the outer shaft is provided with a semicircular groove, the upper end of the semicircular groove is communicated with the upper surface of the outer shaft, the middle of the left side and the right side of the inner shaft is vertically fixed with a sliding strip, the sliding strip corresponds to the semicircular groove, and the sliding strip slides into the semicircular groove and is connected with the semicircular groove in a vertical sliding manner;

the inner walls of the semicircular grooves are respectively attached with a spongy cushion, oil injection holes communicated with the inner walls of the semicircular grooves are formed in the middle positions above the left side and the right side of the outer wall of the outer shaft, and plugs for sealing the oil injection holes are embedded in the oil injection holes;

outer axle inside lower place vertical fixation has the thread bush, just it has the bottom outlet to open in the middle of the outer axle bottom, the laminating of bottom outlet inner wall has the round rubber circle, just the activity runs through there is the threaded spindle in the bottom outlet.

Preferably, the length of the semicircular groove is consistent with that of the sliding strip, and the length of the sliding strip is consistent with that of the inner shaft.

Preferably, the top of the threaded shaft passes through the threaded sleeve and is in threaded connection with the threaded sleeve.

Preferably, the top end of the threaded shaft is welded and fixed with the bottom of the inner shaft.

Preferably, the mounting inserted bar is fixed below the front face of the outer shaft and above the front face of the inner shaft.

Preferably, the inner wall of the rubber ring is in contact with the outer wall of the threaded shaft.

By adopting the technical scheme, the beneficial effects are as follows:

the sliding strip is aligned to the semicircular groove, and the top of the semicircular groove is communicated with the upper surface of the outer shaft, so that a user can slide the bottom of the sliding strip into the semicircular groove, the semicircular groove and the sliding strip are matched to play a role in guiding, the inner shaft can be more stable when the inner shaft slides up and down in the outer shaft in a telescopic manner, the phenomena of shaking and displacement are avoided, and the stability of the lifting column during lifting is improved;

extract the stopper and to adding lubricating oil in the oil filler hole, lubricating oil just can flow into the half slot along the oil filler hole in, recycles the foam-rubber cushion and adsorbs, and when the draw runner slided from top to bottom in the half slot, can extrude the absorbent lubricating oil of foam-rubber cushion under frictional force to directly spray on the surface of draw runner, can guarantee like this constantly lubricated between draw runner and the half slot, and be favorable to improving mechanical properties between the two, reduce wearing and tearing, increase of service life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.

Fig. 1 is a schematic view of the overall front perspective structure of the present invention;

fig. 2 is a partial structural schematic view of an outer shaft a of the present invention;

FIG. 3 is a schematic view of the overall front view cross-section structure of the present invention;

fig. 4 is a schematic view of the bottom plane structure of the outer shaft of the present invention.

The labels in the figure are: the outer shaft 1, the mounting inserted rod 101, the socket 102, the bottom hole 103, the rubber ring 104, the threaded shaft 105, the threaded sleeve 106, the semicircular groove 107, the sponge pad 108, the oil filling hole 109, the plug 110, the inner shaft 2 and the slide bar 201.

Detailed Description

In order to make the purpose, technical features and technical effects of the technical solution of the present invention clearer, the drawings of the embodiments of the present invention are combined together, and the example solution of the embodiments of the present invention is clearly and completely described.

Referring to fig. 1 to 4, the present application is a lifting column for an automatic extension ladder, comprising an outer shaft 1 and an inner shaft 2, wherein a socket 102 communicated with the inside of the outer shaft 1 is formed above the outer shaft 1, the lower end of the inner shaft 2 passes through the socket 102 and is movably inserted into the outer shaft 1, and a mounting inserted link 101 is fixed below the front surface of the outer shaft 1 and above the front surface of the inner shaft 2;

specifically, the whole lifting column is formed by the inner shaft 2 and the outer shaft 1, and the lifting column is fixedly connected with the automatic telescopic ladder by a user through the insertion rods 101 arranged in the inner shaft 2 and the outer shaft 1;

the middle of the left side and the right side of the inner wall of the outer shaft 1 is provided with a semicircular groove 107, the upper end of the semicircular groove 107 is communicated with the upper surface of the outer shaft 1, the middle of the left side and the right side of the inner shaft 2 is vertically fixed with a slide bar 201, the slide bar 201 corresponds to the semicircular groove 107, the slide bar 201 slides into the semicircular groove 107 and is connected with the semicircular groove in a vertical sliding manner, the length of the semicircular groove 107 is consistent with that of the slide bar 201, and the length of the slide bar 201 is consistent with that of;

the inner walls of the semicircular grooves 107 are respectively attached with a sponge pad 108, oil filling holes 109 communicated with the inner walls of the semicircular grooves 107 are formed in the middle positions above the left side and the right side of the outer wall of the outer shaft 1, and plugs 110 for sealing the oil filling holes 109 are embedded in the oil filling holes 109;

furthermore, when a user assembles the lifting column, the sliding strips 201 on the left side and the right side of the inner shaft 2 are respectively aligned with the semicircular grooves 107 on the left side and the right side of the inner wall of the outer shaft 1, because the top parts of the semicircular grooves 107 are communicated with the upper surface of the outer shaft 1, the user can slide the bottoms of the sliding strips 201 into the semicircular grooves 107 and contact with the sponge cushions 108 in the semicircular grooves 107, the sliding strips 201 slide downwards along the semicircular grooves 107, and the sliding strips 107 are matched with the sliding strips 201 to play a guiding role, so that the inner shaft 2 can be more stable when sliding in the outer shaft 1 in a vertically telescopic manner, the phenomena of shaking and displacement are avoided, and the stability of the lifting column during lifting is improved;

furthermore, when the user repeatedly lifts the inner shaft 2 up and down for a long time, the plug 110 in the oil filling hole 109 can be pulled out, lubricating oil is added into the oil filling hole 109, the oil filling hole 109 is communicated with the inner wall of the semicircular groove 107, the entering lubricating oil flows into the semicircular groove 107 along the oil filling hole 109, the flowing lubricating oil can be adsorbed by utilizing the sponge pad 108 attached to the inner wall of the semicircular groove 107, and the sliding strip 201 is contacted with the sponge pad 108, so that when the sliding strip 201 slides up and down in the semicircular groove 107, the lubricating oil adsorbed by the sponge pad 108 can be extruded out under the friction force and is directly sprayed on the surface of the sliding strip 201, so that the sliding strip 201 and the semicircular groove 107 can be lubricated constantly, the mechanical performance between the sliding strip 201 and the semicircular groove 107 can be improved, the abrasion is reduced, and the service life is prolonged;

a threaded sleeve 106 is vertically fixed at the middle lower part in the outer shaft 1, a bottom hole 103 is formed in the middle of the bottom of the outer shaft 1, a circle of rubber ring 104 is attached to the inner wall of the bottom hole 103, a threaded shaft 105 movably penetrates through the bottom hole 103, the top of the threaded shaft 105 penetrates through the threaded sleeve 106 and is in threaded connection with the threaded sleeve, the top end of the threaded shaft 105 is fixedly welded with the bottom of the inner shaft 2, and the inner wall of the rubber ring 104 is in contact with the outer wall of the threaded shaft 105;

furthermore, through the threaded shaft 105, a user can connect the threaded shaft 105 with a rotor of the motor, the threaded shaft 105 is driven to rotate through the rotor, the threaded shaft 105 performs vertical threaded motion in the threaded sleeve 106, because the top end of the threaded shaft 105 is welded with the bottom of the inner shaft 2, the threaded shaft 105 also simultaneously drives the inner shaft 2 to perform lifting motion in the outer shaft 1 during vertical motion, and through the rubber ring 104 in the bottom hole 103, the inner wall of the rubber ring 104 is in contact with the outer wall of the threaded shaft 105, so that the threaded shaft 105 can be isolated from the bottom hole 103 through the rubber ring 104, and friction between the threaded shaft 105 and the inner wall of the bottom hole 103 during rotation is avoided.

In the present specification, each embodiment is described with emphasis on differences from other embodiments, and the same or similar parts between the embodiments may be referred to each other.

Unless otherwise defined, technical or scientific terms used in the present embodiments should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. In the present specification, the terms "upper", "lower", "left" and "right" are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the above specific embodiments without departing from the scope of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention, which is defined by the appended claims.

Claims

1. A lifting column for an automatic extension ladder comprises an outer shaft (1) and an inner shaft (2), wherein a socket (102) communicated with the inside of the outer shaft (1) is formed above the outer shaft (1), the lower end of the inner shaft (2) penetrates through the socket (102) and is movably inserted into the outer shaft (1), and the lifting column is characterized in that:

the middle of the left side and the right side of the inner wall of the outer shaft (1) is provided with a semicircular groove (107), the upper end of the semicircular groove (107) is communicated with the upper surface of the outer shaft (1), the middle of the left side and the right side of the inner shaft (2) is vertically fixed with a sliding strip (201), the sliding strip (201) corresponds to the semicircular groove (107), and the sliding strip (201) slides into the semicircular groove (107) and is connected with the semicircular groove in a vertical sliding manner;

sponge pads (108) are attached to the inner walls of the semicircular grooves (107), oil filling holes (109) communicated with the inner walls of the semicircular grooves (107) are formed in the middle positions above the left side and the right side of the outer wall of the outer shaft (1), and plugs (110) for sealing the oil filling holes (109) are embedded in the oil filling holes (109);

outer axle (1) is inside in the below vertical fixation have thread bush (106), just it has bottom hole (103) to open in the middle of outer axle (1) bottom, bottom hole (103) inner wall laminating has round rubber circle (104), just the activity runs through threaded shaft (105) in bottom hole (103).

2. The raising/lowering column for an escalator as claimed in claim 1, wherein: the length of the semicircular groove (107) is consistent with that of the sliding strip (201), and the length of the sliding strip (201) is consistent with that of the inner shaft (2).

3. The raising/lowering column for an escalator as claimed in claim 1, wherein: the top of the threaded shaft (105) passes through the threaded sleeve (106) and is in threaded connection with the threaded sleeve.

4. A lifting column for an escalator as claimed in claim 3, wherein: the top end of the threaded shaft (105) is welded and fixed with the bottom of the inner shaft (2).

5. The raising/lowering column for an escalator as claimed in claim 1, wherein: and an installation inserted bar (101) is fixed on the lower front part of the outer shaft (1) and the upper front part of the inner shaft (2).

6. The raising/lowering column for an escalator as claimed in claim 1, wherein: the inner wall of the rubber ring (104) is contacted with the outer wall of the threaded shaft (105).