CN217323236U

CN217323236U - Screw nut guiding mechanism

Info

Publication number: CN217323236U
Application number: CN202220408287.1U
Authority: CN
Inventors: 端木凡峰; 曹俊英; 袁宇杰; 刘锦成
Original assignee: Luoyang Bajia Electric Co ltd
Current assignee: Luoyang Bajia Electric Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-30
Anticipated expiration: 2032-02-28

Abstract

The utility model belongs to the technical field of hoisting device, specifically disclose a screw nut guiding mechanism, under the effect of driving motor, the lead screw rotates and can drive the material carrying platform to vertically lift along the lead screw, a plurality of guide seats horizontally arranged are arranged at the edge of the material carrying platform along the circumferential interval, the guide seats can be detachably connected with the material carrying platform, a stepped hole with a small top and a big bottom is arranged at the middle part of the guide seat, the lead screw is arranged in the stepped hole in a penetrating way, a screw nut sleeve is arranged on the lead screw, a guide sleeve is sleeved outside the screw nut, the lower end of the guide sleeve is fixedly connected with the screw nut, the upper end of the guide sleeve is arranged at the lower part of the stepped hole in a penetrating way in a matching way, an elastic connecting piece is arranged between the upper part of the screw nut and the shaft shoulder of the stepped hole, the guide sleeve is matched with the stepped hole to form a sliding guide pair, sliding is generated when the lead screw nut and the guide seats relatively move, rigid contact is avoided, load impact on the driving motor is reduced, each part in the protection actuating system, simple structure, stability is strong, long service life.

Description

Screw nut guiding mechanism

Technical Field

The utility model belongs to the technical field of hoisting device, specifically disclose a screw nut guiding mechanism.

Background

The vertical sintering furnace in the industrial furnace has the problems of furnace charging and furnace discharging of materials to be sintered in the using process, the using efficiency of the sintering furnace and the labor intensity of a user are influenced by the furnace charging and discharging modes, the conventional vertical sintering furnace is divided into an upper charging discharging mode and a lower charging discharging mode, the lower discharging sintering furnace has the advantages of easiness in charging and discharging, low labor intensity, high automation degree and the like, but the conventional equipment has the defects of large volume, complex structure, low strength and poor stability, low service life of a lifting system, high failure rate and the like due to the fact that the lifting system bears pressure.

Disclosure of Invention

In order to solve the problem in the background art, the utility model discloses a screw nut guiding mechanism, the lead screw is hung upside down and is set up, passes through with elastic element between holding material platform and the lead screw, and simple structure, stability are strong, long service life.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a screw nut guiding mechanism, including driving motor and lead screw, under driving motor's effect, the lead screw is rotatory and can drive and carry the material platform along the vertical lift of lead screw, be provided with the guide holder that a plurality of level set up along its circumference interval at year material platform edge, the guide holder can be dismantled with carrying the material platform and be connected, be provided with big end down's shoulder hole at the middle part of guide holder, the lead screw is worn to establish in the shoulder hole, screw nut overlaps and establishes on the lead screw, be equipped with the uide bushing at the screw nut overcoat, uide bushing lower extreme and screw nut fixed connection, the uide bushing upper end is coincide and is worn to establish in the shoulder hole lower part, be provided with elastic connection spare between the shaft shoulder of screw nut top and shoulder hole.

Further, screw nut guiding mechanism, the guide holder includes roof and the bottom plate that the interval set up from top to bottom, the equal level of roof and bottom plate sets up, be provided with circular through-hole at the middle part of roof, the position that corresponds with the through-hole on the bottom plate is provided with the quadrilateral hole, the aperture in quadrilateral hole is greater than the internal diameter of through-hole, be provided with the backplate between the rear end of roof and bottom plate, backplate and year material platform flange can dismantle and be connected, the uide bushing upper end coincide wears to establish in the quadrilateral hole, be provided with the flexible elastomer of lead screw axial can be followed to top and roof bottom at screw nut, uide bushing and quadrilateral hole cooperation form the slip guide vice.

Furthermore, the screw nut guide mechanism is provided with an elastic body base above the screw nut, and an elastic body capable of stretching along the axial direction of the screw is arranged between the elastic body base and the bottom of the top plate.

Furthermore, the elastic body of the lead screw nut guide mechanism is rubber, a steel wire spring or a disc spring.

Furthermore, the screw nut guide mechanism is provided with a step surface on one side of the upper part of the rear baffle plate facing the material loading platform connecting flange, and a spigot matched with the step surface is arranged on one side of the material loading platform connecting flange facing the rear baffle plate.

Furthermore, the guide mechanism of the screw nut is detachably connected with elastic protective covers above the top plate of the guide seat and below the bottom plate respectively.

Furthermore, the screw nut guide mechanism is provided with side plates between the left end and the right end of the top plate and the bottom plate respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a screw nut guiding mechanism, including driving motor and lead screw, under the effect of driving motor, the nut that lead screw rotary drive matches with the lead screw moves along the lead screw straight line, and then drives the material carrying platform and goes up and down vertically along the lead screw, be provided with a plurality of guide holders that set up horizontally along its circumference interval at the material carrying platform edge, be provided with the shoulder hole that the upper part is big-end-down in the middle part of guide holder, the lead screw is worn to be arranged in the shoulder hole, be equipped with the uide bushing in the lead screw nut overcoat, the uide bushing lower extreme and lead screw nut fixed connection, the uide bushing upper end is coincided and is worn to be arranged in the shoulder hole lower part, be provided with the elastic connecting piece between the shaft shoulder of lead screw nut upper side and shoulder hole, form the slip guide pair, produce the slip when moving relatively between lead screw nut and the guide holder, avoid rigid contact, reduce the load impact to driving motor, each spare part in the actuating system has been protected, simple structure, stability is strong, long service life.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic view of the connection structure of the guide seat and the material-supporting platform of the present invention;

in the above figures: 1-an elastomeric base; 2, a guide sleeve; 3-a lead screw; 4-an elastomer; 5-a guide seat; 5.1-top plate; 5.2-bottom plate; 5.3-side plate; 5.4-rear baffle; 6-lead screw nut; 7-a protective cover; 8-a buffer seat; 9-a screw seat; 10-a material loading platform.

Detailed Description

For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.

Combine 1 elaboration of attached drawing the utility model relates to a screw nut guiding mechanism, including driving motor and lead screw 3, under driving motor's effect, nut 6 that 3 rotary drive of lead screw and lead screw match is along 3 rectilinear movement of lead screw, and then it carries material platform 10 along the vertical lift of lead screw to drive, carry material platform 10 edge to be provided with guide holder 5 that the level of a plurality of set up along its circumference interval, guide holder 5 can dismantle with carrying material platform 10 and be connected, be provided with big end down's shoulder at the middle part of guide holder 5, lead screw 3 wears to establish in the shoulder, 6 covers of screw nut establish on lead screw 3, be equipped with uide bushing 2 at 6 overcoat of screw nut, 2 lower extremes of uide bushing and 6 fixed connection of screw nut, the identical lower part of wearing to establish in the shoulder lower part of shoulder of 2 upper ends of uide bushing, be provided with elastic connection spare between the shaft shoulder of screw nut 6 tops and shoulder.

As an optional design, the screw nut guide mechanism is preferably selected, the guide seat 5 comprises a top plate 5.1 and a bottom plate 5.2 which are arranged at an upper interval and a lower interval, the top plate 5.1 and the bottom plate 5.2 are both horizontally arranged, a circular through hole is arranged in the middle of the top plate 5.1, a quadrilateral hole is arranged on the bottom plate 5.2 corresponding to the circular through hole, the aperture of the quadrilateral hole is larger than the inner diameter of the through hole, the circular through hole and the quadrilateral hole jointly form a stepped hole with a small upper part and a large lower part, a rear baffle 5.4 is arranged between the rear ends of the top plate 5.1 and the bottom plate 5.2, the rear baffle 5.4 is detachably connected with a connecting flange of the material loading table 10 through a bolt, the upper end of the guide sleeve 2 is coincidently penetrated in the quadrilateral hole, an elastic body base 1 is arranged above the screw nut 6, an elastic body 4 capable of axially extending and retracting along the screw rod 3 is arranged between the elastic body base 1 and the bottom of the top plate 5.1, the guide sleeve 2 and four sides are matched to form a sliding guide pair, sliding occurs during the relative movement between the spindle nut and the guide shoe 5.

As an optional design, the screw nut guide mechanism is preferably characterized in that the elastic body 4 is rubber, a steel wire spring or a disc spring, and the elastic body base 1 is arranged below the elastic body 4, so that the elastic body 4 can keep a correct position and is uniformly stressed.

As an optional design, preferably, the screw nut guide mechanism is provided with a step surface on the upper portion of the rear baffle 5.4 facing the connecting flange of the material loading platform 10, a spigot matched with the step surface is arranged on the side of the connecting flange of the material loading platform 10 facing the rear baffle 5.4, positioning in the vertical direction is performed through the spigot, and the guide seat 5 and the screw nut are connected through a reamed hole bolt, so that positioning and power transmission can be reliably realized.

As an optional design, preferably, the screw nut guide mechanism is characterized in that an elastic protective cover 7 is detachably connected above a top plate 5.1 of a guide seat 5 and below a bottom plate 5.2 of the guide seat, the upper end and the lower end of a screw 3 are rotatably connected with an upper screw seat 9 and a lower screw seat 9 respectively, a buffer seat 8 is arranged on the upper screw seat 9 and the lower screw seat 9 respectively, the elastic protective cover 7 and the buffer seat 8 are sleeved on the screw respectively, when a material bearing table 10 is in contact with the upper screw seat 9 and the lower screw seat 9, the elastic protective cover 7 and the buffer seat 8 are compressed, load impact of a driving motor caused by rigid contact is avoided, and each part in a driving system is protected.

As an optional design, the screw nut guide mechanism is preferably provided with side plates 5.3 respectively and correspondingly arranged between the left end and the right end of the top plate 5.1 and the bottom plate 5.2, so that the overall strength of the guide seat 5 is improved.

The utility model discloses the working process is as follows:

1) the motor drives the screw rod 3 to rotate, the screw rod 3 drives the screw rod nut 6 to move, but the rotary motion is limited by the guide sleeve 2 and the guide seat 5, and the screw rod nut 6 drives the guide sleeve 2, the elastic body base 1, the elastic body 4, the guide seat 5 and the material carrying platform 10 to move upwards;

2) when the material carrying platform 10 moves upwards to the limit position, due to positioning strategies, positioning errors, system inertia and structural requirements, the screw nut 6, the guide sleeve 2 and the elastomer base 1 are not completely stopped and continue to move upwards, but the material carrying platform 10 does not continue to move upwards, at the moment, the screw nut 6 is tightly pressed and sleeved on the elastomer 4 on the screw by power brought by the power, the elastomer 4 contracts until the driving system is completely stopped, rigid contact is avoided due to the existence of the elastomer 4, load impact is prevented, and all parts in the system are protected;

3) when discharging is needed, the motor drives the lead screw 3 to rotate reversely, the lead screw 3 drives the lead screw nut 6 to move, but the lead screw nut 6 and the guide sleeve 2 move downwards because the rotation movement is limited by the guide sleeve 2 and the guide seat 5, and the elastomer base 1, the elastomer 4, the guide seat 5 and the material loading platform 10 are all tightly pressed on the lead screw nut 6 and move downwards under the action of gravity until the lower limit position is reached;

4) when the system moves upwards, the protective cover 7 above the guide seat 5 is compressed, the protective cover 7 below the guide seat 5 is extended, and when the system moves downwards, the protective cover 7 above the guide seat 5 is extended, and the protective cover 7 below the guide seat 5 is compressed, so that dust pollution of the elastic body base 1, the guide sleeve 2, the lead screw 3, the elastic body 4, the guide seat 5 and the lead screw nut 6 is prevented.

The above description is only the application embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the right scope of the present invention cannot be limited thereby, and any equivalent changes made according to the technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a screw nut guiding mechanism, includes driving motor and lead screw, under driving motor's effect, the lead screw is rotatory and can drive and carry the material platform along the vertical lift of lead screw, characterized by: be provided with the guide holder that a plurality of level set up along its circumference interval at year material platform edge, the guide holder can be dismantled with year material platform and be connected, be provided with big end down's shoulder hole at the middle part of guide holder, the lead screw is worn to establish in the shoulder hole, the screw nut cover is established on the lead screw, be equipped with the uide bushing at the screw nut overcoat, uide bushing lower extreme and screw nut fixed connection, the uide bushing upper end coincide wears to establish in the shoulder hole lower part, be provided with elastic connection spare between the shaft shoulder of screw nut top and shoulder hole.

2. The lead screw nut guide mechanism of claim 1, further comprising: the guide holder includes roof and the bottom plate that upper and lower interval set up, the equal level of roof and bottom plate sets up, be provided with circular through-hole at the middle part of roof, the position that corresponds with the through-hole on the bottom plate is provided with the quadrilateral hole, the aperture in quadrilateral hole is greater than the internal diameter of through-hole, be provided with the backplate between the rear end of roof and bottom plate, the backplate can be dismantled with year material platform flange and be connected, the uide bushing upper end is coincide to wear to establish in the quadrilateral hole, be provided with the elastomer that can follow lead screw axial expansion and contraction between lead screw nut's top and roof bottom, uide bushing and quadrilateral hole cooperation form the slip guide pair.

3. A lead screw nut guide mechanism as set forth in claim 2, wherein: an elastic body base is arranged above the screw nut, and an elastic body capable of axially stretching along the screw is arranged between the elastic body base and the bottom of the top plate.

4. A lead screw nut guide mechanism as set forth in claim 2, wherein: the elastic body is rubber, a steel wire spring or a disc spring.

5. A lead screw nut guide mechanism as set forth in claim 2, wherein: a step surface is arranged on one side of the upper part of the rear baffle plate facing the material loading platform connecting flange, and a spigot matched with the step surface is arranged on one side of the material loading platform connecting flange facing the rear baffle plate.

6. A lead screw nut guide mechanism as set forth in claim 2, wherein: elastic protective covers are detachably connected above the top plate of the guide seat and below the bottom plate respectively.

7. A lead screw nut guide mechanism as set forth in claim 2, wherein: side plates are correspondingly arranged between the left end and the right end of the top plate and the bottom plate respectively.