CN219542204U - Automatic adjust alignment plug - Google Patents

Abstract

The utility model relates to the technical field of positive core rod adjustment, in particular to an automatic adjustment centering core rod which comprises an expansion rod, a screw rod, expansion beads, an upper step hollow shaft, a mechanical tube expander and an iron ring, wherein an upper step thick shaft of the upper step hollow shaft is integrally welded with the outer side of the top of the mechanical tube expander, the upper step hollow shaft is coaxial with the mechanical tube expander, a plurality of mechanical tube expander holes are formed in the side of the mechanical tube expander, the expansion beads are placed in the holes of each mechanical tube expander and are in a cylinder capable of rolling, the diameter of each expansion bead is larger than that of the hole of the mechanical tube expander, the expansion rod is inserted into the upper step hollow shaft, a sleeve is naturally vertical to the upper surface of a template, and after a rib plate is in spot welding connection with the sleeve, the expansion rod is moved upwards, the expansion beads are conveniently separated from the template holes, a group of the core rod is conveniently pulled out and then inserted into another adjacent template hole, the assistance is reduced, and the core rod is conveniently pulled out, and friction damage of the core rod is avoided.

Description

Automatic adjust alignment plug

Technical Field

0001. The utility model relates to the technical field of fluidized beds, in particular to an automatic adjusting and aligning core rod.

Background

0002. When the grid of the fluidized bed reactor tube bundle is manufactured, the spot welding seam between the rib plate and the sleeve is contracted, so that the sleeve acts on the core rod to generate certain tensile force, the tensile force is transmitted to the lower step thin shaft to generate larger friction force with the template hole, and the core rod is difficult to extract manually.

0003. In the prior art, the following drawbacks also exist:

the core rod is inserted into the holes of the mould plate and is rocked, so that the sleeve pipe between each layer of the grids cannot be concentric and coaxial, the outer wall of the heat exchange pipe and the inner wall of the sleeve pipe do not smoothly generate resistance when the heat exchange pipe is penetrated, the heat exchange pipe can move forwards only by increasing the tensile force, the heat exchange pipe is scratched, the heat exchange pipe with the depth of more than 0.5mm is scrapped and pulled out, the production efficiency is low, and the cost is raised.

Disclosure of Invention

0004. The purpose of the utility model is that: the automatic adjusting and aligning core rod is provided, and the core rod ejects or contracts an expanding bead in the pipe expander by moving the expanding rod up and down, so that the diameter of the lower step shaft is quickly adjusted. It has the characteristics of no shaking, light weight, convenient extraction, etc. The concentricity and the coaxiality of the grid sleeve are improved, and the method is suitable for manufacturing grids of the fluidized bed reactor tube bundles, and is particularly suitable for grid sleeves requiring concentricity and coaxiality.

0005. In order to achieve the above purpose, the present utility model provides the following technical solutions: the automatic adjusting and aligning mandrel comprises an expansion rod, a screw rod, expansion beads, an upper step hollow shaft, a mechanical tube expander and an iron ring, wherein an upper step thick shaft of the upper step hollow shaft is integrally welded with the outer side of the top of the mechanical tube expander, the upper step hollow shaft is coaxial with the mechanical tube expander, a plurality of mechanical tube expander holes are formed in the side of the mechanical tube expander, each mechanical tube expander hole is internally provided with the expansion beads, each expansion bead is a cylinder capable of rolling, the diameter of each expansion bead is larger than that of each mechanical tube expander hole, the expansion rod is inserted into the upper step hollow shaft, and extends out of the bottom of the mandrel until the expansion rod extends out of the bottom of the mandrel, and the plane diameter of the large end of the expansion rod is larger than that of the hollow hole at the top of the mechanical tube expander;

and a screw rod is welded at the top end of the expansion rod.

0006. Preferably, the expansion rod, the screw rod, the expansion bead, the upper step hollow shaft and the mechanical pipe expander are combined into a core rod body, and the core rod body is cylindrical.

0007. Preferably, the bottom of the expansion rod is sleeved with an iron ring and is welded and connected.

0008. Preferably, a flat steel plate is arranged at the bottom of the core rod body, a plurality of template holes are formed in the top of the flat steel plate, and the inside of the template holes is penetrated with the mechanical pipe expander.

0009. Preferably, a sleeve is sleeved outside the hollow shaft, and rib plates are welded on the side of the sleeve.

0010. Preferably, the hollow shaft is coaxial with the mechanical pipe expander, the template hole is vertical to the upper surface of the flat steel plate, and the hollow shaft is concentric with the template hole.

0011. Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides an automatic adjusting and aligning core rod, which comprises:

1. the mandrel is inserted into the template hole on the flat steel plate, then three expanded beads move through the expansion rod, the outer diameter of the expanded beads can be adjusted to be maximum through the downward movement of the expansion rod, the expanded beads can be loosened through the upward movement of the expansion rod, the expanded beads are contracted in the tube expander, the mandrel is free of shaking, the mandrel is light in weight, and is suitable for manufacturing sleeves with different diameters of through holes of the flat steel plate, and the mandrel is convenient to extract.

0012.2, sleeve pipe and template upper surface nature are perpendicular, and gusset and sleeve pipe spot welding are connected the back, move the expansion rod upwards, and the convenient expanded bead of expanding is separated with the template hole, is convenient for take out the group and inserts in another adjacent template hole again to the plug, reduces the helping hand, is convenient for take out the plug, avoids the plug to take place friction damage.

Drawings

0013. FIG. 1 is a schematic view of an external perspective structure of the present utility model;

FIG. 2 is a schematic view of the hollow shaft structure of the present utility model;

FIG. 3 is a schematic view of the structure of the expanded beads of the present utility model;

fig. 4 is a schematic view of the structure of the flat steel sheet of the present utility model.

0014. In the figure: 1. a screw rod; 2. a hollow shaft; 3. expanding beads; 4. a mechanical pipe expander; 401. a mechanical expander hole; 5. an iron ring; 6. a flat steel plate; 601. a pattern plate hole; 7. a sleeve; 8. rib plates; 9. an expansion rod.

Detailed Description

0015. The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

0016. The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

0017. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

0018. In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

0019. As shown in fig. 1-4, an automatic adjusting and aligning mandrel comprises an expansion rod 9, a screw rod 1, expansion beads 3, an upper step hollow shaft 2, a mechanical expander 4 and an iron ring 5, wherein an upper step thick shaft of the upper step hollow shaft 2 is integrally welded with the outer side of the top of the mechanical expander 4, the upper step hollow shaft 2 and the mechanical expander 4 are coaxial, a plurality of mechanical expander holes 401 are formed in the side of the mechanical expander 4, the expansion beads 3 are placed in each mechanical expander hole 401, the expansion beads 3 are cylinders capable of rolling, the diameter of the expansion beads 3 is larger than that of the mechanical expander holes 401, the expansion rods 9 are inserted into the upper step hollow shaft 2 until the expansion rods 9 extend out of the bottom of the mandrel, the plane diameter of the large end of the expansion rods 9 is larger than that of the hollow hole at the top of the mechanical expander 4, the expansion rods 9 extend into the upper step hollow shaft 2 until the bottom of the mechanical expander 4 is in a hole, and the screw rod 1 is welded at the top end of the expansion rods 9.

0020. The expansion rod 9, the screw rod 1, the expansion bead 3, the upper step hollow shaft 2 and the mechanical pipe expander 4 are combined into a core rod body, the core rod body is cylindrical, an iron ring 5 is sleeved at the bottom of the expansion rod 9, and the iron ring 5 is welded and connected.

0021. The bottom of the core rod body is provided with a flat steel plate 6, the top of the flat steel plate 6 is provided with a plurality of template holes 601, the inside of the template holes 601 is penetrated with the mechanical pipe expander 4, a sleeve 7 is sleeved outside the hollow shaft 2, rib plates 8 are welded on the side of the sleeve 7, the hollow shaft 2 and the mechanical pipe expander 4 are coaxial, the template holes 601 are vertical to the upper surface of the flat steel plate 6, and the hollow shaft 2 and the template holes 601 are concentric and coaxial.

0022. Working principle: when manufacturing the grid of the fluidized bed reactor tube bundle, the upper step thick shaft of the hollow shaft 2 and the mechanical expander 4 are welded into a whole, then the thick shaft outer diameter is machined, the thick shaft and the mechanical expander 4 are ensured to be coaxial, then the expanded beads 3 are placed into the mechanical expander holes 401 from the inside, the expanded beads 3 are cylinders capable of rolling, the diameter of the expanded beads 3 is larger than that of the holes, the expanded rods 9 are stretched into the hollow shaft 2 until the expanded rods 9 extend out from the bottom of the core rod, and the plane diameter of the large end of the expanded rods 9 is larger than that of the hollow holes at the top of the mechanical expander;

the method comprises the steps of welding a large end of an expansion rod 9 by a screw rod 1, extending the welded expansion rod 9 from a hollow shaft 2 until reaching a hole at the bottom of a mechanical tube expander 4, sleeving the bottom of the expansion rod 9 by an iron ring 5, finding a proper position for welding, and adopting a screw rod with a size of M12 for the screw rod 1 in order to ensure the stability of the screw rod 1;

inserting the core rod into one of the die plate holes 601 on the flat steel plate 6, moving three expansion beads 3 through expansion rods 9, adjusting the outer diameter of the expansion beads 3 to be maximum by downward movement of the expansion rods 9, and loosening the expansion beads 3 by upward movement of the expansion rods 9 to shrink the expansion beads 3 in the mechanical tube expander 4;

when the mandrel is used, the screw rod 1 is lifted, the expanded beads 3 are contracted, the mechanical tube expander 4 is inserted into the template hole 601, the expanded rod 9 moves downwards to enable the expanded beads 3 to be tightly attached to the template hole 601, the mandrel does not shake, the template hole 601 is vertical to the upper surface of the flat steel plate 6 because the hollow shaft 2 is coaxial with the mechanical tube expander 4, after the expanded beads 3 are tightly attached to the template hole 601, the hollow shaft 2 is concentric and coaxial with the template hole 601 and is vertical to the upper surface of the template hole 601 naturally, the sleeve 7 is sleeved on the hollow shaft 2, the sleeve 7 is also vertical to the upper surface of the flat steel plate 6 naturally, after the rib plate 8 is connected with the sleeve 7 through spot welding, the expanded rod 9 moves upwards to enable the expanded beads 3 to be detached from the template hole 601, the extracted group mandrel is inserted into the other adjacent template hole 601 again, and finally assembled into a grid according to the operation.

0023. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present utility model is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

0024. The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (6)

1. An automatic adjusting and aligning core rod comprises an expansion rod (9), a screw rod (1), expansion beads (3), an upper step hollow shaft (2), a mechanical expander (4) and an iron ring (5), and is characterized in that an upper step thick shaft of the upper step hollow shaft (2) is integrally welded with the outer side of the top of the mechanical expander (4), the upper step hollow shaft (2) and the mechanical expander (4) are coaxial, a plurality of mechanical expander holes (401) are formed in the side of the mechanical expander (4), the expansion beads (3) are placed in each mechanical expander hole (401), the expansion beads (3) are cylinders capable of rolling, the diameter of the expansion beads (3) is larger than that of the mechanical expander holes (401), the expansion rod (9) is arranged inside the upper step hollow shaft (2) in a penetrating mode until the expansion rod (9) extends out of the bottom of the screw rod, the diameter of the plane of the expansion rod (9) is larger than that of the hollow hole in the top of the mechanical expander (4), and the expansion rod (9) extends from the upper step hollow shaft (2) to the bottom of the mechanical expander (4); the top end of the expansion rod (9) is welded with a screw rod (1).

2. The self-adjusting alignment mandrel of claim 1, wherein: the expansion rod (9), the screw rod (1), the expansion beads (3), the upper step hollow shaft (2) and the mechanical pipe expander (4) are combined into a core rod body, and the core rod body is cylindrical.

3. The self-adjusting alignment mandrel of claim 1, wherein: an iron ring (5) is sleeved at the bottom of the expansion rod (9) and is welded and connected.

4. The self-adjusting alignment mandrel of claim 2, wherein: the bottom of the core rod body is provided with a flat steel plate (6), a plurality of template holes (601) are formed in the top of the flat steel plate (6), and the inside of the template holes (601) is penetrated with the mechanical pipe expander (4).

5. The self-adjusting alignment mandrel of claim 1, wherein: the sleeve (7) is sleeved outside the hollow shaft (2), and rib plates (8) are welded on the sides of the sleeve (7).

6. The self-adjusting alignment mandrel of claim 4, wherein: the hollow shaft (2) is coaxial with the mechanical pipe expander (4), the template hole (601) is vertical to the upper surface of the flat steel plate (6), and the hollow shaft (2) is concentric and coaxial with the template hole (601).