CN114178361A

CN114178361A - Bent pipe preparation method

Info

Publication number: CN114178361A
Application number: CN202111250514.9A
Authority: CN
Inventors: 邓康; 韩成; 赵刚
Original assignee: Fifth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Current assignee: Fifth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15

Abstract

The disclosure relates to a method for preparing a bent pipe, wherein a pipe is fixed on one side of a bent pipe mold through a fixing piece. And placing the pipe bending mould fixed with the pipe in the water tank and below the water surface in the water tank. The water tank is heated through the heating device, so that the pipe is heated and softened in the water tank and is attached to the arc-shaped surface to form the arc-shaped pipe. That is, firstly, the pipe is fixed on the pipe bending die with the arc surface through the fixing part so as to generate micro deformation, then the pipe bending die is placed in the water tank and heats the water tank, so that the pipe positioned in the water tank is softened after being heated, and the softened pipe can be continuously bent towards the arc surface under the action of gravity, the resistance of water and the like and is completely attached to the arc surface so as to form the arc pipe, so that the preparation process of the arc pipe is easy to operate and high in preparation efficiency; and the bending degrees of all the arc-shaped pipes are the bending radians of the arc-shaped surfaces, so that the quality uniformity of the prepared arc-shaped pipes is better.

Description

Bent pipe preparation method

Technical Field

The disclosure relates to the technical field of bent pipe preparation, in particular to a bent pipe preparation method.

Background

The bridge has a drainage pipe extending down to the ground near the surface of the bridge pier. The diameter of the top area of the pier is gradually increased from bottom to top, so that the surface of the pier is an arc surface, and the drainage pipe in the area needs to be made into an arc-shaped pipe for better attaching and fixing with the pier.

At present, the tube is usually softened by directly baking and then manually bent to be bent into an arc tube. However, the direct fire-baking method is not easy to control the softening temperature, so that the tube is easily deformed irregularly, and the tube is easily cracked under the condition of unstable fire. Therefore, the existing preparation method of the arc-shaped tube is not easy to operate and low in preparation efficiency, and the prepared arc-shaped tubes are uneven in quality level.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a method for manufacturing a bent pipe.

The present disclosure provides a method for manufacturing a bent pipe, comprising the following steps:

fixing the pipe on one side of the pipe bending mould through a fixing piece; wherein one side of the pipe bending mould is provided with an arc-shaped surface;

placing the pipe bending mould fixed with the pipe in a water tank and below the water surface in the water tank;

the water tank is heated through the heating device, so that the pipe is heated and softened in the water tank, and the pipe after being heated and softened can bend towards the arc-shaped surface under the action of gravity and is attached to the arc-shaped surface, so that an arc-shaped pipe is formed.

According to an embodiment of the present disclosure, the step of fixing the pipe to one side of the bending mold by the fixing member includes: and fixing two ends of the pipe on the pipe bending die through at least two fixing pieces.

According to an embodiment of the present disclosure, after the step of fixing the two ends of the tube to the bending mold by at least two fixing members, the method comprises:

a limiting groove is formed in the position, corresponding to the fixing piece, of the pipe, so that the fixing piece is limited in the limiting groove; wherein, the spacing groove is arranged along the circumferential extension of the pipe.

According to an embodiment of the present disclosure, the step of placing the bending mold fixed with the pipe in a water tank and below a water surface in the water tank comprises:

and obliquely conveying the pipe bending die and the pipe material into the water tank through a lifting appliance device, and enabling the pipe bending die and the pipe material to be positioned below the water surface of the water tank.

According to an embodiment of the present disclosure, the step of heating the water tank by a heating device includes:

the water tank is heated through the heating device, and water in the water tank is heated to a preset temperature.

According to an embodiment of the present disclosure, the preset temperature is 90 ℃.

According to an embodiment of the present disclosure, after the step of heating the water in the water tank to a preset temperature, the method includes:

soaking the pipe bending die and the pipe in the water tank at the preset temperature for a preset time;

and after the pipe is soaked for the preset time, the pipe is softened.

According to an embodiment of the present disclosure, before the step of immersing the pipe bending mold and the pipe in the water tank at the preset temperature for a preset time, the method further includes: and pouring settled sand into the pipe.

According to an embodiment of the present disclosure, the preset time period is greater than or equal to three minutes.

According to an embodiment of the present disclosure, the tubular product after being heated and softened can be bent towards the cambered surface and attached to the cambered surface under the action of gravity, so as to form the cambered pipe, the step includes:

moving the pipe bending die and the softened pipe outside the water tank through a lifting appliance device;

the softened pipe bends towards the arc-shaped surface and is attached to the arc-shaped surface under the action of gravity in the transferring process to form the arc-shaped pipe.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the present disclosure provides a method for manufacturing a bent pipe, comprising the following steps: firstly, fixing a pipe on one side of a bending die through a fixing piece; wherein, one side of the bending mould is provided with an arc surface. Then, the pipe bending mould fixed with the pipe is placed in the water tank and is positioned below the water surface in the water tank. Next, heat the water tank through heating device to be heated and softened back can be buckled and laminate mutually with the arcwall face towards the arcwall face under the action of gravity in order to make tubular product in the water tank, in order to form the arc pipe. That is to say, according to the preparation method of the bent pipe, firstly, the pipe is fixed on the bent pipe mold with the arc-shaped surface through the fixing piece so as to generate micro-deformation, then the bent pipe mold is placed in the water tank and heats the water tank, so that the pipe in the water tank is softened after being heated, and the softened pipe can be continuously bent towards the arc-shaped surface under the action of gravity, the resistance of water and the like and is completely attached to the arc-shaped surface so as to form the arc-shaped pipe, so that the preparation process of the arc-shaped pipe is easy to operate, and the preparation efficiency is high; and the bending degrees of all the arc-shaped pipes are the bending radians of the arc-shaped surfaces, so that the quality uniformity of the prepared arc-shaped pipes is better.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a flow chart of a method for manufacturing a bent pipe according to an embodiment of the present disclosure;

fig. 2 is a schematic view of a preparation structure of a bent pipe preparation method according to an embodiment of the disclosure.

Wherein, 1, a pipe bending mould; 11. an arc-shaped surface; 2. a pipe; 3. a water tank; 4. a heating device; 5. a fixing member; 6. a spreader device; 61. supporting the vertical rod; 62. a support rail; 63. a spreader; 7. and (4) a bracket.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1, the present embodiment provides a method for manufacturing a bent pipe, including the following steps:

s101: fixing the pipe on one side of the pipe bending mould through a fixing piece; wherein, one side of the pipe bending mould is provided with an arc-shaped surface;

s102: placing the pipe bending mould fixed with the pipe in the water tank and below the water surface in the water tank;

s103: the water tank is heated through the heating device, so that the pipe is heated and softened in the water tank, and the pipe after being heated and softened can be bent towards the arc-shaped surface under the action of gravity and is attached to the arc-shaped surface, so that the arc-shaped pipe is formed.

In step S101, in concrete implementation, referring to fig. 2, one side of the pipe bending mold 1 is an arc surface 11, and the curvature or the degree of curvature of the arc surface 11 is the degree of curvature or the degree of curvature of the arc pipe to be formed. Tubular product 2 is located on arcwall face 11 and is fixed through mounting 5 to make tubular product 2 crooked towards arcwall face 11, tubular product 2's the crooked degree this moment is less, tubular product 2 promptly and not with all laminating between the arcwall face 11, in order to avoid tubular product 2 to lead to tubular product 2 fracture with 11 cooperations of arcwall face or laminating completely. In particular, the bending die 1 can be made of a material which is not easily deformed by heat. The bending mould 1 may form an arc surface 11 for the upper surface or may also form an arc surface 11 for the lower surface.

In step S102, in concrete implementation, referring to fig. 2, the pipe bending mold 1 and the pipe 2 are both disposed in the water tank 3 and located below the water surface in the water tank 3, and the heating device 4 is configured to heat the water tank 3, so that the pipe 2 can be bent toward the arc surface 11 and attached to the arc surface 11 under the action of gravity after being heated and softened in the water tank 3, so as to form an arc pipe.

That is to say, after fixing tubular product 2 on bending die 1 through mounting 5, put into water tank 3 together with tubular product 2 with bending die 1 and the water in the water tank 3 has not crossed bending die 1 and tubular product 2, make heating device 4 when heating water tank 3, can make tubular product 2 thermally equivalent in the water tank, thereby soften, and can be crooked towards arcwall face 11 under the effect of gravity etc. after softening, and laminate completely between 11 with the arcwall face, thereby form the arc pipe unanimous with the crooked radian of arcwall face 11, this arc pipe can be used for the laminating to fix in the pier bottom surface.

In this embodiment, the water tank 3 is filled with running water, and the running water in the water tank 3 is heated through the heating device 4, so that the pipe 2 can be heated and softened, and the pipe is easy to bend to form an arc-shaped pipe. Alternatively, the water tank 3 may also contain other liquid that is easy to heat and raise the temperature, which is not limited in this embodiment.

In summary, in the method for manufacturing the bent pipe provided by this embodiment, at first, the pipe is fixed on the bent pipe mold having the arc surface through the fixing member to generate micro-deformation, then the bent pipe mold is placed in the water tank and heats the water tank, so that the pipe located in the water tank is softened after being heated, and the softened pipe can be continuously bent toward the arc surface under the actions of gravity, water resistance and the like and completely attached to the arc surface to form the arc pipe, so that the preparation process of the arc pipe is easy to operate and the preparation efficiency is high; and the bending degrees of all the arc-shaped pipes are the bending radians of the arc-shaped surfaces, so that the quality uniformity of the prepared arc-shaped pipes is better.

Further, the step of fixing the pipe at one side of the bending mold by a fixing member includes: the two ends of the pipe are fixed on the pipe bending die through at least two fixing pieces.

In a specific implementation, referring to fig. 2, at least two fixing members 5 are respectively disposed at two ends of the tube 2 to fix the two ends of the tube 2 to the bending mold 1. The fixing member 5 may be a binding member such as a binding rope or a binding wire. The binding pieces are fixed on the bending die 1 to form a closed loop structure, and two ends of the pipe 2 are respectively sleeved in the closed loop structure formed by the corresponding binding pieces, so that the pipe 2 is fixed on the bending die 1, and two ends of the pipe 2 are bent towards the arc-shaped surface 11 to deform to a certain degree.

Further, after the step of fixing the two ends of the tube to the bending mold by at least two fixing members, the method comprises: a limiting groove is formed in the position, corresponding to the fixing piece, of the pipe, so that the fixing piece is limited in the limiting groove; wherein, the spacing groove extends along the circumference of tubular product and sets up. That is to say, in order to avoid the tubular product cover to establish and take place the pine to take place to take off in the closed loop structure that ligature piece formed, can form the spacing groove on tubular product, this spacing groove can be for the pipe wall of tubular product go up interior concave formation, also can be for evagination formation for thereby ligature piece can be located the spacing inslot and ensure the reliable fixed of tubular product on the bending die.

Further, the step of placing the pipe bending mold fixed with the pipe material in the water tank and below the water surface in the water tank comprises the following steps: the pipe bending die and the pipe are obliquely conveyed into the water tank through the lifting appliance device, and the pipe bending die and the pipe are located below the water surface of the water tank.

Exemplarily, as shown in fig. 2, the lifting device 6 includes a vertical support rod 61, a horizontal support rod 62 and a lifting device 63, the vertical support rod 61 is disposed on the outer side of the water tank 3, one end of the horizontal support rod 62 is connected to the vertical support rod 61, the other end is connected to the lifting device 63, and the lifting device 63 is used for lifting the elbow mold 1. That is, support montant 61 is used for fixing on the holding surface, and is used for supporting support horizontal pole 62 and hoist 63, and the one end of supporting horizontal pole 62 can with the top rotatable coupling who supports montant 61, for example can be articulated etc. for support horizontal pole 62 and form the lever, thereby drive hoist 63 and reciprocate in order to realize hoist elbow mould 1.

Further, the step of heating the water tank by the heating device includes: the water tank is heated by the heating device, and water in the water tank is heated to a preset temperature. In this embodiment, the preset temperature is 90 ℃, that is, the pipe can be softened by heating the water in the water tank to 90 ℃ through the heating device.

Further, after the step of heating the water in the water tank to a preset temperature, the method comprises: soaking the pipe bending die and the pipe in a water tank at a preset temperature for a preset time; after soaking for a preset time, the pipe is softened. In this embodiment, the preset time period is greater than or equal to three minutes.

In addition, before the step of soaking the pipe bending die and the pipe in the water tank with the preset temperature for the preset time, the pipe can be filled with settled sand, so that the pipe does not need to be manually pressed, and the pipe is bent after being heated under the action of gravity such as settled sand.

Further, in step S103, the pipe can be bent toward the arc surface and attached to the arc surface under the action of gravity after being heated and softened in the water tank, so as to form the arc pipe, including:

moving the pipe bending die and the softened pipe outside the water tank through a lifting appliance device; the softened pipe is bent towards the arc-shaped surface under the action of gravity in the transferring process and is attached to the arc-shaped surface to form an arc-shaped pipe. That is to say, after tubular product is softened in the water tank, can hang the tubular product after softening and the bending die outside the water tank through the hoist device, at the tubular product after softening in the in-process of being hung and send out the water tank, the tubular product after softening is crooked towards the arcwall face under gravity and the effect of water and is laminated completely between the arcwall face to form the curved pipe that has the unanimity with the crooked radian of arcwall face, be exactly required curved pipe.

In addition, referring to fig. 2, brackets 7 are disposed on both outer walls of the water tank 3, and the water tank 3 is fixed on a supporting surface by the brackets 7. The support surface may be the ground or other support surface on which the water tank 3 may be placed. The support 7 can be a frame structure made of a rectangular rod or a round rod, and the support 7 and the water tank 3 can be connected in a clamping manner or a detachable connection manner such as fastener connection.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The preparation method of the bent pipe is characterized by comprising the following steps:

2. The method for manufacturing an elbow pipe according to claim 1, wherein the step of fixing the pipe material to one side of the elbow mold by a fixing member comprises: and fixing two ends of the pipe on the pipe bending die through at least two fixing pieces.

3. The method for manufacturing a bent pipe according to claim 2, wherein after the step of fixing both ends of the pipe to the bending mold by at least two fixing members, the method comprises:

4. The elbow manufacturing method according to any one of claims 1 to 3, wherein the step of placing the elbow mold to which the pipe is fixed in a water tank below a water surface in the water tank comprises:

5. The elbow manufacturing method according to any one of claims 1 to 3, wherein the step of heating the water tank by the heating device includes:

6. The method for manufacturing a bent pipe according to claim 5, wherein the preset temperature is 90 ℃.

7. The method for manufacturing a bent pipe according to claim 5, wherein after the step of heating the water in the water tank to a preset temperature, the method comprises:

and after the pipe is soaked for the preset time, the pipe is softened.

8. The method for manufacturing an elbow pipe according to claim 7, wherein before the step of immersing the elbow mold and the pipe in the water tank at the preset temperature for a preset time period, the method further comprises: and pouring settled sand into the pipe.

9. The method according to claim 7, wherein the predetermined period of time is greater than or equal to three minutes.

10. The method for manufacturing an elbow pipe according to any one of claims 1 to 3, wherein the step of bending the pipe softened by heating toward the arc-shaped surface under the action of gravity and fitting the pipe to the arc-shaped surface to form an arc-shaped pipe includes: