CN212051575U

CN212051575U - Cylindrical workpiece stepping mechanism

Info

Publication number: CN212051575U
Application number: CN202020535556.1U
Authority: CN
Inventors: 刘凤益; 李朋; 韩晓任; 雷薇; 王辉尧
Original assignee: Chongqing CISDI Thermal and Environmental Engineering Co Ltd
Current assignee: Chongqing CISDI Thermal and Environmental Engineering Co Ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-01
Anticipated expiration: 2030-04-13

Abstract

The utility model belongs to the field of stepping mechanisms and stepping modes, and relates to a cylindrical workpiece stepping mechanism, which comprises a fixed beam and a movable beam; the tooth shapes and tooth pitches of the fixed beam and the movable beam are the same, the tooth pitch is a, the movable beam is positioned below the fixed beam in an initial state, and the upper position of the tooth tip of the movable beam is lower than the lower position of the tooth socket of the fixed beam; during normal production, the workpiece performs rolling step movement twice, rolls in the same direction twice, and advances a. When the furnace is stopped and the temperature is kept for some reason, the workpiece does a rolling type stepping motion, and the workpiece rolls once. In normal production, the utility model can improve the number of rotation turns of the workpiece in the stepping furnace, thereby improving the temperature uniformity of the workpiece and reducing the bending deformation of the workpiece; when the furnace is shut down and the temperature is kept, the utility model can avoid the bending deformation of the workpiece and the uneven heating when the furnace is shut down and the temperature is kept; the utility model discloses still reduce the movement distance of walking beam among the step-by-step process by a wide margin, energy-conserving effect is showing.

Description

Cylindrical workpiece stepping mechanism

Technical Field

The utility model belongs to step-by-step mechanism and step-by-step mode field relate to a cylindrical work piece stepping mechanism.

Background

At present, the typical steel pipe heat treatment process in the world is a quenching and tempering process (Q + T process) and a normalizing process (N process), 1 quenching furnace and 1 tempering furnace are arranged on a production line, and the movement mode of the steel pipe in the heat treatment furnace is mainly a stepping mode.

In the heat treatment or heating production process of cylindrical workpieces such as steel pipes, tube blanks and the like, the movement mode of the workpieces in the furnace is mostly step-by-step.

The traditional cylinder workpiece stepping mode is characterized in that: a set of tooth-shaped walking beam system is arranged, and comprises a movable beam and a fixed beam; the movable beam and the walking beam have the same tooth form and are not staggered in position; the movable beam is driven by a hydraulic or electric unit and a furnace bottom mechanical unit to move in a stepping way along the track of ascending, translating forwards, descending, translating backwards; the movable beam moves in a stepping mode once, the steel pipe moves in one step, and the steel pipe rolls on the fixed beam once; when the workpiece needs to wait in the furnace for some reason, the traditional stepping motion is started, and the workpiece cannot rotate in place. In the movement mode, the number of rolling circles of the workpiece in the advancing process is small, so that the control of the temperature uniformity and the bending deformation of the steel pipe is not facilitated; the traditional stepping motion track is 'ascending-descending', the bending deformation of a workpiece is reduced by increasing stress points, the workpiece cannot rotate, and the bending prevention effect is limited.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a stepping mechanism for cylindrical workpieces, which improves the number of rolling turns of the cylindrical workpieces in the normal stepping process in the furnace, and enables the workpieces to roll when stepping in situ, thereby greatly improving the heat treatment quality of the cylindrical workpieces and reducing the bending deformation of the workpieces.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a cylindrical workpiece stepping mechanism comprises a fixed beam and a movable beam, wherein the fixed beam is fixedly arranged, and the movable beam is movably arranged; the fixed beam and the movable beam have the same tooth shape and tooth pitch, the tooth pitch is a, and the movable beam and the fixed beam are arranged in parallel; the position staggering quantity of the tooth grooves of the movable beam and the tooth grooves of the fixed beam in the horizontal direction is c, and c is less than 0.5 a; the translation distance of the movable beam along the horizontal direction is d or c, wherein d is a-2 c.

Optionally, the tooth heights of the movable beam and the fixed beam are both h, in an initial state, the movable beam is located below the fixed beam, the tooth tip upper position of the movable beam is lower than the tooth socket lower position of the fixed beam, the lifting distance of the movable beam in the height direction is e, and e is greater than 2 h.

Optionally, the walking beam is driven by means of a hydraulic or electric unit and a mechanical unit of the furnace bottom.

The beneficial effects of the utility model reside in that:

the utility model can double the rotation turns of the cylindrical workpiece in the stepping movement process; and can realize rolling type stepping movement; the heating quality of the cylindrical workpiece can be obviously improved, and the bending deformation of the workpiece can be effectively controlled; meanwhile, in the normal movement process, the horizontal displacement of the movable beam is shortened compared with that of the transmission stepping mechanism, and the energy-saving effect is remarkable. The utility model can be widely applied to heating and heat treatment of round pipes, round shafts and other workpieces in the stepping furnace without increasing investment.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of step S1 of the present invention;

fig. 3 is a schematic view of step S2 of the present invention;

fig. 4 is a schematic view of step S3 of the present invention;

fig. 5 is a schematic view of step S4 of the present invention;

fig. 6 is a schematic view of step S11 of the present invention;

fig. 7 is a schematic view of step S12 of the present invention;

fig. 8 is a schematic view of step S13 of the present invention;

fig. 9 is a schematic view of step S14 of the present invention;

FIG. 10 is a diagram of a rolling step motion in the prior art;

FIG. 11 is a diagram of a prior art movement path of a non-rolling stepping exercise.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-11, the reference numbers in the figures refer to the following elements: fixed beam 1, walking beam 2, work piece 3.

The utility model provides a cylindrical workpiece stepping mechanism improves the cylinder work piece and rolls the number of turns at the step-by-step in-process in the stove to also can roll when realizing that the original place is marked time, thereby improve cylinder work piece thermal treatment quality, reduce the bending deformation volume of work piece by a wide margin.

The stepping mechanism comprises a tooth-shaped movable beam unit and a tooth-shaped fixed beam unit, the tooth-shaped structures of the tooth-shaped movable beam unit and the tooth-shaped fixed beam unit are the same, and the tooth pitch is a; at the initial position, the tooth spaces of the movable beam and the fixed beam are arranged in a staggered manner in the horizontal direction, the staggered distance is c, and c is less than 0.5 a; the upper position of the tooth tip of the movable beam is lower than the lower position of the tooth socket of the fixed beam; the motion mode of the stepping mechanism comprises two rolling stepping motions and one rolling stepping motion.

During normal production, the stepping mechanism performs rolling stepping movement twice. The movement mode is as follows:

(S1) the movable beam ascends (fig. 2): in the ascending process of the movable beam, the tooth socket inclined plane of the movable beam firstly contacts the cylindrical workpiece and then drags the workpiece to continuously ascend; in the process of continuously ascending, the cylindrical workpiece rolls under the thrust action of the right half tooth inclined plane of the movable beam; and when the lifting is finished, the lower position of the tooth socket of the movable beam is higher than the upper position of the tooth tip of the fixed beam, and the cylindrical workpiece rolls to the lower position of the tooth socket of the movable beam, namely the cylindrical workpiece finishes one-time rolling and moves forwards.

(S2) walking beam translation (fig. 3): the movable beam drives the cylindrical workpiece to move forwards by d, and d is a-2 c;

(S3) the movable beam descends (fig. 4): in the descending process of the movable beam, the cylindrical workpiece firstly contacts the inclined plane of the right half tooth of the tooth socket of the fixed beam; the movable beam continues to descend, and the cylindrical workpiece rolls towards the lower part of the tooth socket of the fixed beam under the important gravity; when the descending is finished, the upper position of the tooth point of the movable beam is lower than the upper position of the tooth groove of the fixed beam, and the cylindrical workpiece rolls to the lower position of the tooth groove of the fixed beam, namely the cylindrical workpiece rolls for the second time and simultaneously moves forwards by a tooth pitch a.

(S4) the movable beam retreats to the initial position (fig. 5).

After the whole stepping process is finished, the cylindrical workpiece rotates for 2 times, and moves forwards by a tooth pitch a.

When the heat preservation is waited to produce, stepping mechanism carries out a roll formula motion of marking time. The movement mode is as follows:

(S11) the movable beam ascends (fig. 6): the ascending process is the same as the two rolling type stepping motions, when the ascending is finished, the cylindrical workpiece rolls from the lower position of the fixed beam tooth groove to the lower position of the movable beam tooth groove, and the cylindrical workpiece finishes one-time rolling and moves forwards.

(S12) the walking beam carrying the cylindrical workpiece is translated backwards c (fig. 7);

(S13) the movable beam descends (figure 8), and in the descending process, the cylindrical workpiece directly falls at the lower position of the tooth groove of the fixed beam; when the descending is finished, the upper position of the movable beam tooth point is lower than the lower position of the fixed beam tooth point;

(S14) the walking beam is translated forward c (fig. 9) back to the starting position.

After the whole stepping process is finished, the cylindrical workpiece only rotates and does not displace.

The stepping mode provided by the utility model can be applied to round pipes, shafts, round bars and the like, and compared with the traditional stepping mechanism and the stepping mode, the stepping mechanism can double the number of rotation turns of a cylindrical workpiece in the stepping motion process; and can realize rolling type stepping movement; the heating quality of the cylindrical workpiece can be obviously improved, and the bending deformation of the workpiece can be effectively controlled; meanwhile, in the normal movement process, the horizontal displacement of the movable beam is shortened compared with that of the transmission stepping mechanism, and the energy-saving effect is remarkable. The utility model can be widely applied to heating and heat treatment of round pipes, round shafts and other workpieces in the stepping furnace without increasing investment.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A cylindrical workpiece stepping mechanism is characterized by comprising a fixed beam and a movable beam, wherein the fixed beam is fixedly arranged; the fixed beam and the movable beam have the same tooth shape and tooth pitch, the tooth pitch is a, and the movable beam and the fixed beam are arranged in parallel.

2. The cylindrical workpiece stepping mechanism as defined in claim 1 wherein, in an initial state, the walking beam is positioned below the fixed beam, and an upper position of a tooth tip of the walking beam is lower than a lower position of a tooth slot of the fixed beam; in the initial state, the position staggering amount of the tooth grooves of the movable beam and the fixed beam in the horizontal direction is c, and c is less than 0.5 a; and the translation distance of the movable beam in the horizontal direction is d or c, wherein d is a-2 c.

3. The cylindrical workpiece stepping mechanism as set forth in claim 1 wherein the tooth heights of said movable beam and said fixed beam are each h, and the lifting distance of said movable beam in the height direction is e, e >2 h.

4. The cylindrical workpiece stepping mechanism as defined in claim 1 wherein the walking beam is driven by means of a hydraulic or electric unit, and a furnace bottom mechanical unit.